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284 Cards in this Set
- Front
- Back
Hallmarks of Cancer
-6 alterations in cell physio |
1. self sufficiency of growth factor
2. Insensitive to growth inhibition factors 3. Evading apoptosis 4. Limitless replication potential 5. Sustained angiogenesis 6. Tissue invasion/metastasis |
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What stimulates angiogenesis of tumor cells?
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Hypoxia of tumor cells initiates signal for BV growth
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What is the primary mediator of angiogenesis (its a protein)?
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VEGF - vascular endothelial growth factor
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T/F - All cancers of WBCs are malignant
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True - they are all called Leukemia
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T/F - All cancers of lymphoid tissue are malignant
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True - all are called lymphoma
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Kinetics of tumor growth - Early growth
1. How does growth fraction relate to cell death here? 2. Growth fraction decreases in response to ________ increasing? |
1. Growth fraction is HIGH; Cell death is LOW
2. Cell mass (tumor mass) increases --> growth decreases |
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7 Warning Signs of Cancer - CAUTION
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C- change in bowel movements
A - A sore that doesn't heal U - Unusual bleeding/discharge T - Thickening or lump develops I - Indigestion or difficulty swallowing O - Obvious change in wart/mole N - Nagging cough/hoarseness |
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Cancer Chemo Treatment - Induction therapy
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1. 1st step in shrinking cancer
2. Evaluation of cancer's response to Tx 3. Patient may be given additional chemo to remove disease |
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Cancer Chem Tx - Adjuvant Therapy
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1. Given to eradicate MIICROMETASTIC disease
2. Follows surgery or radiation |
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Cancer Chemo Tx - Neoadjuvant therapy
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1. Given to shrink tumor prior to surgery
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4 separate anti-cancer med questions:
1.Name 2 Antimetabolite drugs examples 2.Name 2Tubulin-binding proteins 3. What is their role (What do they block?) 4. Schedule or dose-dependent |
1. methotrexate or fluorouracil
2. vincristine, vinblastine 3. Block cell activities at some stage of cell cycle --> Thus, they are CELL CYCLE-DEPENDENT AGENTS 4. Schedule dependent only |
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1. Alkylating agents drug examples
2. Are they specific to a stage of cell cycle? 3. Schedule or dose dependent? |
1. cyclophosphamide, busulfan
2. NO 3. Dose-dependent - cell survival is exponentially related to dose |
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Most chemotherapeutic agents are most effective when tumor mass size is_____ and growth fraction is _______?
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tumor mass is small and growth fraction is high
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Effects of chemotherapy on tumor cell populations follows ______ kinetic principles: fraction of cells killed is proportional to the dose used
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1. first-order
- Percentage of cells killed remains constant - thus its exponential |
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In cancer chemo, treatment results are a direct function of...
1. ? 2. ? |
1. dose of drug administered number & - dose intensity
2. frequency of repeated treatments - dose density |
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(Cancer) Dose in which patients experience serious, life-threatening toxicity
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Dose-limiting toxicity (DLT)
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(Cancer) highest possible dose that does not produce life-threatening toxicity
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Maximum tolerated dose (MTD)
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(Cancer) minimum dose to produce pharmacologic effect
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Biologically effective dose (BED)
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(Cancer) Dose _______ is the amount of chemotherapy administered to a patient over a specific unit of time. (e.g. Cumulative dose/28 days)
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Intensity
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(Cancer) Dose _______ A scheduling approach designed to decrease the time period between chemotherapy administration (e.g. The amount of dose per administration)
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Density
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T/F - The scheduling of the dose in relation to circadian rhythms can alter the therapeutic index with cancer drugs
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True
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_____________ will require the drug to be held, a dosage reduction and/or drug discontinuation
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Dose-limiting toxicities
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Myleosuppresion and Cytopenias are the result of ____________________?
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Bone marrow suppression
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(In cancer chemo) ______________ (3 side fx) are seen increasingly with signal transduction agents, including mTOR inhibitors, and ionizing radiation
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Mucositis, stomatitis, esophagitis - inflammatory process of the oral mucosa in response to anticancer agents or ionizing radiation
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Anthracycline and Trastuzumab are 2 cancer drugs that are likely to produce this side effect ________?
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Drug-induced cardiomyopathy
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1.Cancer drugs most likely to cause Hemorrhagic cystitis (bladder).
2. This is due to the active metabolite of these drugs called ________. 3. _________ is given in conjunction with these drugs because it binds the metabolite |
Cyclophosphamide and ifosfamide
Acrolein Mensa (Mesnex) |
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cisplatin, methotrexate, nitrosoureas, mitomycin-C are cancer drugs that are most toxic to the ____________ system (human organ system).
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Renal
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Bleomycin is an anti-cancer agent that is most commonly associated with __________ toxicity.
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Pulmonary
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Alkylating agents
1. MOA |
1. Add covalent bonds to nucleic acid bases --> cross links that prevent replication, transcription
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Name the anti-cancer med: **Also, RA med**
1. Classic alkylating agent 2. Hemorrhagic cystitis - bladder toxic 3. used for leukemia, lymphoma 4. Immunosuppressant - used for RA 5. Given with Mesna to protect bladder 6. Prodrug activated by CYP450 |
Cyclophosphamide
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Name anti-cancer med:
1. Neurotoxic 2. Toxic to bladder (hemorrhagic cystitis) 3. Classic Alkylating agent |
Ifosfamide
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Class of anti-cancer meds that are a Type of alkylating agent - cross link DNA --> prevent transcription, replication
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Nitrosureas
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1. Nitrosurea alk agent
2. **Crosses BBB -- used to treat brain tumors** 3. ADR - interstitial pneumonitis & pulmonary fibrosis 4. ADR - myleosuppression (bone marrow), N/V, stomatitis, teratogen |
Carmustine (BCNU, BiCNU)
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Name the anti-cancer med:
1. Nitrosurea alk agent 2. used in treatment of pancreatic cancer (beta-cells target) 3. Use to treat GI cancer 4. Particularly nephrotoxic |
Streptozocin (Zanosar)
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DRUG Class
1. Bind topo-I--DNA complex 2. Prevents religation of DNA 3. Causes ssDNA and cleavable complexes |
Topoisomerase I inhibitors
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1. Topo-I inhibitor
2. Pro-drug that is cleaved to active metab -- SN-38 3. Used for: ovarian cancer, colorectal cancer, Lung cancer, leukemia 4. ADRs - Bone marrow suppresion, gonadal suppression, teratogen 5. ***Diarrhea that can be life-threatening develops*** |
Irinotecan – classic drug of class
(Camptosar, CPT-11) |
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Name the DRUG CLASS of anti-cancer meds:
1. Cause freezing of DNA in DNA complex with enzyme 2. Causes dsDNA breaks |
Topoisomerase II Inhibitors
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Name the anti-cancer meds:
1. Intercalating type of drug in this class 2. Causes conformational changes due to intercalating 3. Also generates free radicals --> causes toxicities/cytotoxicities 4. Key factor - makes you have red-orange urine 5. many uses 6. Available in liposomal formulas |
Doxorubicin (AdriamycinR, DoxilR)
or Daunorubicin (Daunomycin, CerubidineR, DaunoXomeR) |
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Liposomal formulations of Daunorubicin
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Doxil and DaunoXome are
liposomal products |
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Name the anti-cancer med:
1. Non-intercalating Topo II inhibitor 2. Causes HYPOtension 3. Uses: testicular, lung, leukemias, lymphomas, myeloablation |
Etoposide (VePesidR, VP-16)
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DRUG CLASS
1. Structural analogs of naturally occurring metabolites: interfere with the normal synthesis of nucleic acids by false substitution 2. Cause DNA damage 3. Cytotoxic - particularly S-phase |
Antimetabolites
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DRUG sub-class
1. Anti-metabolite 2. fluorodeoxyuridine monophosphate (FdUMP) which, in the presence of folates, binds tightly to and interferes with the function of thymidylate synthase 3. Stops DNA synthesis |
Pyrimidine antagonists
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1. Pyrimidine antagonists
2. Anti-metabolite class 3. Used for: GI and breast cancers |
Fluorouracil (5-FU, Efudex, Adrucil)
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DRUG Subclass of antimetabolites
1. bind to enzyme dihydrofolate reductase, thereby blocking the reduction of folate to its active form, tetrahydrofolate. 2. Stops both DNA and RNA synthesis 3.Stops thymidine and PURINE synthesis |
Folate Analog Metabolic Antagonists
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Name that anti-cancer med:
1. Antimetabolite 2. Folate analog antagonist 3. HIGHLY protein bound 4. **Can be used for RA** 5. Highly nephrotoxic 6. leucovorin used as “rescue” with high doses 7. Salicylates, probenicid decreases renal clearance 8. Used for: leukemias, breast, head and neck, lymphomas |
Methotrexate (Folex, Mexate)
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DRUG Subclass of anti-metabolite
1. Must be phosphorylated intracellularly to an active triphosphate form which competes with deoxycitidine for DNA polymerase 2. |
Cytidine Analogs
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1. Anti-metabolite, Cytidine analog
2. Main use = Leukemia 3. Uses: Gastro-intestinal, leukemia, breast, lung |
Cytarabine (Ara-C, (Cytosar-U)
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DRUG Subclass of anti-metabolites
1. prodrugs converted to ribonucleotides that incorporate into DNA, thereby blocking de novo purine synthesis 3. Immunosuppresion is found with some of these drugs |
Purine Antagonists
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Name the anti-cancer med:
1. Purine antagonists, anti-metabolite 2. Used for: leukemias, lymphomas, post-organ transplant 3. ADR - Hepatic stasis; 75% dose reduction required with use of allopurinol |
Mercaptopurine (6-MP, Purinethol)
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1. DRUG CLASS
2. Bind to tubulin - interfere with mitotic spindle 3. Drugs are NOT water soluble - patients experience most problems with drug solvent |
Microtubule interacting agents
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1. Drug subclass of microtubule IA
2. Bind to specific sites on tubulin, thereby inhibiting tubulin polymerization and subsequent disappearance of the spindle apparatus. Agents block the progression of cells beyond mitosis |
Vinca alkaloids
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Name the Anti-cancer med:
1. Vinca Alkaloid ( Mt-interacting) 2. Unique feature - causes SIADH (syndrome of inappropriate anti-diuretic hormone secretion) 3. Treats: Lymphoma, Lung, Breast cancers |
Vincristine (Oncovin)
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Name the anti-cancer med SUB-Class:
1. Drug Subclass of microtubule-interacting agents 2. Bind to a specific site on tubulin, inducing the formation of aberrant microtubules. 3. Block cells in pre-mitosis (G2-M) by overstabilizing microtubules, rather than inhibiting their assembly. |
Taxanes
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Name this anti-cancer med:
1. Taxane subclass of Mt-interacting 2. Unique feature - Cremaphor diluent: premedicate for hypersensitivity reaction 3. Treats: Lung, breast, head/neck, and ovarian cancers |
Paclitaxel (Taxol)
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Name this sub-class of anti-cancer meds:
1. Subclass of Mt-interacting agents 2. bind to β-tubulin subunits on microtubules, thereby suppressing microtubule dynamics 3. Major site of action --> blocks cells during mitotic phase of cell division 4. low level of susceptibility to MRP-1 or P-gp efflux transporters. |
Epothilones
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Name the anti-cancer med:
1. Epothiones subclass (Mt-IA class) 2. Used to treat breast cancer |
Ixabepilone (Ixempra)
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Name that SUB-Class of anti-cancer meds:
1. Subclass of Microtubule-interacting agents 2. Non-taxane microtubule dynamics inhibitor 3. Eribulin (Halaven) - is the prototypical drug of this class --> used to treat breast cancer |
Halichondrin B analog
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Name the class of anti-cancer meds:
1. Differentiating Class 2. Drug subclass that: stimulates differentiation of several cell lines, including squamous, erythroid and myeloid progenitor cells 3. Classic examples: a. All-trans-retinoic acid (ATRA, tretinoin, Vesanoid) - acute promyelocytic leukemia B. Bexarotene (Targretin) - cutaneous T-cell lymphoma |
Vitamin-A Derivatives
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Name that anti-cancer drug:
1. Drug in Misc Class 2. Inhibits the enzyme ribonucleotide reductase, which plays a key role in DNA synthesis by catalyzing the conversion of ribonucleotides to deoxyribonucleotides. Most toxic to cells that are actively synthesizing DNA 3. Used to treat: leukemias, cervical cancer, radiation sensitizer |
Hydroxyurea (Hydrea)
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Name that anti-cancer med:
1. Misc class of drug 2. Inhibits protein synthesis in tumor cells dependent upon exogenous asparagine 3. This drug breaks down asparagine in blood and tumors can’t use this as source of exogenous ASN 4. Used to treat: Leukemia and lymphoma |
Asparaginase (Elspar)
Pegaspargase (PEG-L-asparaginase, Oncospar) |
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1. Drug Class
2. A number of tumors arise from tissues normally sensitive to hormonal growth controls. 3. The more differentiated tumors often retain hormone receptors. 4. Strategies involve ablation of various hormone-secreting tissues or administration of hormones that down-regulate tumor growth |
Hormonal Agents
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Name that anti-cancer med:
1. Estrogen receptor modulator 2. Estrogen antagonist and agonist properties 3. Solely used to treat breast cancer |
Tamoxifen (Nolvadex)
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Name the anti-cancer med SUB-CLASS
1. Hormonal agent 2. inhibit intracellular uptake and binding of testosterone and dihydrotestosterone to specific receptors. |
Anti-androgens
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Name the anti-cancer med:
1. Antiandrogen agent (hormonal agent) 2. Used to treat prostate cancer |
Flutamide (Eulexin)
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1. Drug subclass of hormonal agents
2. Initial effect causes release of FSH and LH from the pituitary. 3. Since the normal release of FSH and LH is cyclical and regulated by feedback inhibition, continued administration results in downregulation of pituitary GnRH receptors, suppressing FSH and LH release. 4. Continued administration in males - little or no testosterone; in females - little or no estradiol |
LHRH agonists
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Name that anti-cancer med
1. LHRH agonist 2. used to treat breast and prostate cancers |
Leuprolide (Lupron, Viadur)
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1. Drug subclass of hormonal agents
2. inhibit conversion of adrenal androgens to estrogens via inhibition of aromatase enzyme |
Aromatase inhibitors
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1. Aromatase Inhibitor
2. Treats Breast cancer |
Anastrozole (Arimidex)
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1. Monoclonal Antibody
2. Chimeric antibody 3. Ab target = CD20 antigen on B-lymphocytes (not found on normal cells or stem cells); mediates B-cell lysis by ADCC and complement-dependent cell lysis 4. Used to treat: Lymphomas, leukemias, autoimmune disorders |
Rituximab (Rituxan)
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Name drug class (general) of anti-cancer meds:
1. Drug Class 2. Drugs that influence the transmission of a signal through the cell, leading to changes that influence cell cycling or other cellular processes 3. Major class = Kinase inhibitors, EGF-inhibitors, mTOR inhibitors 4. ***MANY drugs undergo transformation via CYP450*** |
Signal Transduction Inhibitors
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1. Inhibits the Bcr-Abl tyrosine kinase created by the Philadelphia chromosome, platelet-derived growth factor (PDGF), c-kit, and stem cell factor
3. Inhibiting cell proliferation and promoting apoptosis |
Imatinib mesylate (Gleevec)
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1. Inhibits epidermal growth factor receptor (EGFR) tyrosine kinase, thereby inhibiting intracellular phosphorylation of signaling pathways
2. Treats - pancreatic cancer & lung cancer |
Erlotinib (Tarceva)
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1. Monoclonal antibody directed against the extracellular domain of the erbB1 receptor
2. Treats: Head/neck cancer and colorectal cancer |
Cetuximab (IMC-225; Erbitux)
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Name that anti-cancer drug:
1. Rapamycin derivative; inhibits mTOR, which induces G1 growth and inhibits proteins 2. Treats Renal cell carcinoma and pancreatic cancer |
Everolimus (Afinitor)
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1. Anti-angiogenesis agents
2. Drugs prevent wound-healing 3. Bevacizumab (Avastin) -- antibody directed against ____receptor |
VEGFR- Inhibitors
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Name the anti-cancer med:
1. reversible inhibitor of 26S proteasome, which is essential for degrading ubiquitinated proteins 2. build-up of non-degraded proteins disrupts the cell cycle and multiple signaling cascades, leading to cell death |
Bortezomib (Velcade)
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1. Extrinsic factors of asthma
2. Intrinsic factors of asthma |
1. Environmental factors (pollen, allergens, etc.)
2. Infections or emotional distress |
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What are the 2 components that cause asthmatic attack
1.? 2.? |
1. Bronchiole constriction
2. Inflammation of bronchial smooth muscle |
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What are the 2 phases of an asthmatic attack
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Early and Late phases
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This describes what phase of an asthmatic attack:
1. Bronchoconstriction within within 20 minutes after exposure to an extrinsic or intrinsic bronchospastic stimulus. 2. Probably caused by mast cell mediators such as histamine, proteases (heparin), PAF and leukotrienes (LTD4) |
Early phase of attack
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What phase of asthma attack is described?
1.Begins 3 -4 hours and peaks 4 – 8 hours after exposure to extrinsic or intrinsic stimuli. 2. Initial activation of mast cells release chemotactic factors (ECF and NCF) which attracts inflammatory cells into area 3. Any non-allergic stimuli may precipitate bronchioconstriction |
Late phase asthma attack
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1. Mast Cells in late phase release _______ and _________?
2. Which one can cause permanent scarring of bronchial tissue |
1. Cytokines and Major basic protein
2. Major basic protein |
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1. What is NOW used for prophylaxis against asthma?
2. What is reserved only for acute attacks? |
1. Inhaled glucocorticoids and oral leukotriene modulators = prophy
2. Beta-2 agonists are used for acute attacks |
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1. Why are Beta-2 agonists not used for prophy anymore with asthma
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1. People become conditioned to these drugs -- will need more to illicit response = RECEPTOR DOWN REGULATION
2. there are better prophy drugs available now |
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1. What specifically to corticosteroids block
2. What 2 products does this indirectly block? 3. Corticosteroids block ________ of inflammatory cells? 4. How do corticosteriods enhance effect of beta-2 agonists |
1. Phospholipase A2
2. Prostaglandins and Leukotrienes 3. Migration 4. They increase the amount of beta-2 receptors in lung tissue and WBCs (mast cells) |
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High _________ levels in mast cells prevents mast cell degranulation
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cAMP
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High cAMP levels causes what effect in lungs?
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Bronchodilation
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What phase of asthma are best effected by corticosteroids?
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Late phase -- because they take a while to work (DNA binding/modulating effect)
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Name 2 reasons why corticosteriods are not given PO for asthma
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1. Cut down on systemic absorption - nasty side effects
2. Deposit drug where needed at much lower dose |
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1. Drug class of:
Beclamethasone (Beclovent®) Flunisolide (Aerobid®) Fluticasone (Flovent®) Triamcinolone (Azmacort®) 2. Which 2 have almost no mineralocorticoid effect |
1. Topical/inhaled corticosteroids
2. Beclamethasone and Triamcinolone |
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What is a major ADR or inhaled steroids?
What must your patient do after they use this type of inhaler? |
1. Local immunosuppression --> Candidial infections
2. Wash their mouth out with water to reduce the risk of oral yeast infection |
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1.When would you give a corticosteroid PO instead of INH?
2. How long should this treatment be given for? No longer than _______? |
1. acute exacerbation of asthma where B2 response is diminished due to increased tolerance
2. No longer than 10 days |
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What are 5 common side effects from prolonged cortiocosteroid dose, PO?
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1. suppression of the hypothalamic-pituitary- adrenal axis
2. osteoporosis 3. increased blood sugar 4. increased risk of infection 5. cataracts |
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1. Non-steroidal prophy asthma drugs
2. NON-bronchodilating 3. Decrease Calcium efflux --> prevent mast cell degranulation 4. Prevents BOTH early and late phase attack 5. Decreases dose of more toxic drugs 6. ***LEAST TOXIC OF ANTI-ASTHMATICS*** |
Cromolyn sodium (Intal®), Nedocromil (Tilade®)-inhalants
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In what type of an attack should NEVER instruct a patient to use Cromolyn sodium (Intal®), Nedocromil (Tilade®)-inhalants
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1. Never use in acute attack --> b/c they are not bronchodilators
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1. ______________ stimulate:
a. Bronchoconstriction b. increase capillary permeability leading to edema in smooth muscles of bronchi c. stimulate mucous secretion d.impair mucocilliary clearance |
Leukotrienes (LTD4, LTC4)
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1. What are the 2 mechanisms of action of leukotriene modifiers?
2. Which MOA is better/preferred? 3. What type of asthma are Leukotriene modifiers very effective at preventing |
1. Inhibit lipoxygenase enzyme or block leukotriene receptor
2. Preferred = blocking receptor 3. ASA/NSAID induced asthma |
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T/F Leukotrienes are better than corticosteroids at improving airway constriction.
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False
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Why would you not recommend giving a Leukotriene modulator for an acute attack?
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1. its given PO
2. Takes a while to work 3. Must only be used for prophy |
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1. First drug to be FDA approved in its class
2. Pill taken PO q 6 h 3. 5-Lipoxygenase inhibitor 4.. Drug WILL block metabolism of warafin and theophylline --> both of these drugs have LOW therapeutic indicies -->Will increase risk of bleeding with warafin -->If theophylline levels get too high (Cardiac and CNS stimulant) Cardiac arrhythmias Seizures |
Zileuton (Zyflo®)
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1. These 2 drugs are Leukotriene receptor blockers
2. __________ is the better of the 2 drugs and can be used for seasonal allergies also 3. Not used for acute attacks |
1. Zafirlukast (Accolate®) & Montelukast (Singulair®)
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Why is Montelukast (Singulair®) preferred over Zileuton (Zyflo®) ?
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1. Because singulair does NOT interact with warafin
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What is the mechanism of beta-2 agonists?
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Directly stimulate Beta-2 adrenergic receptors --> Bronchodilation
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1. What are the effects of Theophylline/caffiene and beta-2 agonists on mast cells?
2. __________ (drug) decreases the break down of cAMP in mast cells 3. __________ (drug) stimulates adenylate cyclase enyzme |
1. They increase cAMP levels in mast cells which prevents their degranulation
2. Theophylline 3. Beta-2 agonists |
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Name that asthma drug:
1. This drug stimulates BOTH beta-1 and beta-2 receptors 2. What 2 serious side fx come from this drug? |
1. Isoproterenol (Isuprel®)
2. Increased heart rate and contraction force ---> can cause tachyarrthymias |
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Name the drug:
1. stimulates alpha-1, beta-1, and beta-2 receptors 2. alpha-1 effect causes blood vessel constriction which reduces mucosal edema 3. Given SQ/IM injection 1:1000 for status asthmaticus |
Epinephrine
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Name drug used in asthma:
1. a1, b1, b2 agonist 2. Tachyphylaxis can develop quickly 3. CAN Cross BBB--which means its not a ____________. |
1. Ephedrine
2. NOT a catecholamine (not epi) --> b/c it can cross BBB |
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Name this asthma drug:
1. – inhalant and pill. 2. Same structure as isoproterenol except OH group moved from C4 to C5 on benzene nucleus. 3. IF you Push dose and you can lose β2 selectivity |
Metaproterenol (Alupent®)
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1. inhalant and injection.
2. A congener of metaproterenol with greater β2 selectivity 3. Can be given chronically to prego women that are having premature contractions to prevent uterine contractions (B2 receptor stimulation relaxes the uterus) |
Terbutaline (Brethaire)
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Name this asthma med:
1. inhalant and pill 2. Most commonly prescribed β2 agonist. 3. Selectivity for β2 receptor greater than metaproterenol and also a longer acting drug. 4. STANDARD OF CARE/DRUG of CHOICE |
Albuterol (Proventil®)
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Name that Asthma drug:
1. inhalant. 2. Longest acting (12 hours) of the β2 selective agents. 3. Less problem with development of tolerance because of less frequent dosing. 4. **However slower onset (10 minutes) than other inhalants. |
Salmeterol (Serevent®)
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Which 2 anti-asthmatic drugs can actually precipitate an asthma attack?
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Albuterol and Salmeterol
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Name that Anti-asthmatic drug
1. Blocks phosphodiesterase III and IV 2. Blocks adenosine receptors Stimulates catecholamine release 3. Antiinflammatory effects Pill and injection 4. Low therapeutic index 5. Drug interactions – CYP1A2 substrate |
Theophylline (Theodur®)
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In the case of status asthmaticus, When patient is on propranolol you must give _________ instead of epi - because epi has lower affinity for receptor
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Theophylline (Theodur®)
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In the case of Theophylline (a CYP1A2 substrate):
1. Erythromycin and ciprofloxacin ___________ blood levels 2. Phenobarbital and carbamazepine _______ blood levels |
1. Increase - because eryth and cipro are inhibitors
2. Decrease - because phenobarb & carbamazepine are enzyme inducers |
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Name this Anti-Cholinergic Anti-asthmatic drug:
1.. Permanently charged atropine-like molecule 2. ANTI-MUSCARINIC 3. Blocks ACH action at M3 receptor 4. Combivent = this + albuterol 5. Common side fx = xerastomia, bad taste |
Ipatropium (Atrovent®)
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This antibiotic is the classic example of a bacteriostatic AB
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Tetracycline
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This antibiotic is the classic example of a bacteriocidal agent
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Penicillin
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Why are bacteriocidal agents preferred? (2 reasons)
|
1. More efficacious
2. Depend less on immune system |
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Name the grouping of antibiotics:
1. erythromycin 2. Tetracycline 3. Clarithromycin 4. Clindamycin 5. Azithromycin 6. Sulfonamides |
Bacteriostatic
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Name the antibiotic group:
1. Penicillins 2. Cephalosporins 3. Metranidazole 4. Quinolones - Ciprofloxicin 5. aminoglycosides |
Bacteriocidal
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1. Name antibiotic
2. More broad spectrum – cause more side fx 3. 10% cross-allergenicity of _________ and cephalosporin because of relation in structure 4. Drug class is number 3 on the list (behind NSAIDs and ASA) for causing allergenicity |
Penicillins
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Good at treating staph infections (penicillins not good at this)
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Cephalosporins
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Name Antibiotic
1. Interactions – drug is a CYP2C9 inhibitor 2. EtOH – disulfiram effects 3. Increases warafin levels 4. DNA interactions 5. **Used solely for anaerobic infections – not effective at aerobics |
Metranidazole
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Antibiotic that is Bacteriocidal by inhibiting DNA gyrase
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Quinolones - Ciprofloxicin
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Name Antibiotic
1. Typically all end in “mycin” 2. **Gram-negative aerobic infections use** -->Must be aerobic b/c oxygen is used to get drug into body 3. Attack bacterial ribosomes (30s???) 4. Streptomycin, genomycin – a lot of these are given by injection -->These drugs have lower therapeutic indicies 5. Have CNS toxicity – go deaf 6. Have neuromuscular blocking activity at high doses – can become paralyzed |
Aminoglycosides
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Name antiobiotic
1. Z-packs 2. Good at getting rid of resistant respiratory infections 3. Doesn’t fit into CYP450 – too big to fit into binding site |
Azithromycin
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Name antiobiotic:
1. Can be static is some people while it can be cidal in other people 2. Used a lot in Endodontics – used because it hits anaerobes |
Clindamycin
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Endocarditis antibiotics when patient is allergic to penicllin (NO Amoxicillin)
|
1. Clarithromycin and azithromycin – used to treat when penicillin allergic patients
2. Clindamycin is used more to treat penicillin allergic pateints because its cheaper |
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Name antibiotic class:
1.inhibit synthesis of folic acid at various steps 2. Bactrum – combination of 2 antibiotics 3. These drugs are NOT GOOD FOR ODONTOGENIC INFECTIONS |
Sulfonamides
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Combo ABs:
Static + Static = ? |
Additive Effect (1+1=2)
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Combo ABs:
Cidal + Cidal = ? |
Synergistic Effect (1+1>2)
|
|
Combo ABs:
Static + Cidal = ? |
Antagonistic Effect (1+1<1)
|
|
Don’t combine cidal agent and static agent at the same time because ??
|
--> the cidal agent generally needs the cell to be functioning to be effective
|
|
Name 3 Antibiotics that are:
Inhibitors of Cell Membrane Synthesis |
1. Nystatin
2. Amphotericin B 3. Vancomycin |
|
Name 2 ABs that are:
Inhibitors of the 30s bacterial ribosome |
1. Tetracycline - static
2. Aminoglycosides - cidal |
|
Name 2 Antibiotics that are:
Inhibitors of the 50s bacterial ribosome |
1. Erythromycin - static
2. Clindamycin - static |
|
Name 3 Antibiotics that are:
DNA synthesis inhibitor |
1. Metranidazole - cidal
2. Quinolones - cidal 3. Rifampin - indicates TB infection |
|
1. What antibiotic blocks folic acid synthesis?
2. What type of Local anesthetics CANNOT be used with these? 3. Why? |
1. Sulfonamides
2. Ester locals 3. b/c esters are metabolized to PABA which is a precursor to Folic acid and could overcome the competitive blockade that sulfonamides cause |
|
Name 3 Antibiotics that are:
Cell Wall Inhibitors |
1. Penicillins
2. Cephalosporins 3. Vancomycin |
|
1.What is the ONLY antibiotic that has been shown scientifically to lower oral contraceptive levels to sub-therapeutic ranges?
2. If she is on the drug, other than the risk of eggo = prego why wouldn't you want to sleep with her anyway? |
1. Rifampin
2. Rifampin means that the girl has or had Tuberculosis, and besides the fact that she might be contagious, she is most definitely gross! |
|
___________ is The range of pathogenic organisms
against which an antibiotic is active. Broad vs narrow |
Spectrum
|
|
What are 3 common problems/adverse effects seen with broad spectrum Antibiotics?
|
1. GI complaints
2. Diarrhea 3. Superinfections from other pathogens (C. albicans, C difficle) |
|
Name Antibiotic:
1. Mechanism: Inhibition of cell wall synthesis 2. Bactericidal (against actively growing cells 3. Most inactivated by penicillinase (B-lactamase) 4. Elimination: Kidney mainly unchanged 5. Toxicity: Low |
Penicillin I
|
|
2 Narrow spectrum Penicillins?
|
1. Penicillin G (benzyl penicillin)
2. Penicillin V (phenoxy methyl penicillin) |
|
2 Broad spectrum Penicillins?
|
1. Ampicillin (Omnipen®)
2. Amoxicillin (Trimox®, Amoxil®) |
|
2 BroadEST spectrum Penicillins?
|
1. Carbenicillin (Geopen®)
2. Ticarcillin (Ticar®) |
|
2 Penicillins used for b-lactamase resistant bacteria
|
1. Methicillin (Staphcillin®)
2. Oxacillin (Bactocil®), other “oxa” penicillins |
|
1. Whats the difference between penicillin G and penicillin V?
|
1. G = acid labile & effects are unpredictable while V = acid stable and shows predictable absorption
|
|
What bacteria will Penicillin G and V be effective against?
|
1. Gram positive bacteria including:
-->Streptococci -->Non-penicillinase producing Staphylococci 2. Some gram negative cocci -->Neiserria 3. Some anaerobes -->Fusobacterium -->Porphyromonas |
|
Dose Penicillin V for:
1. Adult 2. Child 3. Penicillin is best absorbed with _____________ so take _________? |
1. Adult: 500 mg q 6h for 7-10 days (1000mg for bad infections)
2. Child: 3 to 6 mg/lb q 6h for 7-10 days 3. Best absorbed on empty stomach -- take 1 hour before meal or 2 hours after |
|
Which penicillins are described here:
1. Indications - UTI, URI, Gonad infections 2. Less effective than Pen V against gram positive cocci 3. More effective than Pen V against gram negative cocci and bacilli |
Broad spectrum penicillins
1. Amoxicillin preferred and used way more than ampicillin |
|
1. What compound is added with amoxicillin to combat penicillnase producing bugs
--> this is called Augmentin 2. What about its structure allows this |
1. Clavulanic acid
2. Possess a beta-lactam ring and thus it increases beta-lactam concentration --> outcompetes beta-lactamase enzyme for binding actual beta lactam ring in Amoxicillin |
|
Broadest spectrum Antibiotics:
1. Medical indications 2. T/F they are inactivated by beta-lactamase 3. What are the 2 drug names |
1. Serious gram negative infections (Pseudomonas, Proteus, Bacterioides Fragilis)
--> Urinary and GI tract 2. True 3. Carbenicillin (Geopen®, Geocillin®) & Ticarcillin (Ticar®) |
|
Penicillinase Resistant Penicillins:
1. Medical Indications 2. T/F You should use the penicillins empirically 3. T/ F these penicillins are better than Pen V against strep and bacterial infections of teeth 4. Name the Antibiotics of this subclass |
1. Those bacteria harboring beta-lactamase - **Staph aureus
2. False 3. False 4. Methicillin - poor oral absorption/nephrotoxic 5. Oxa, Cloxa, Dicloxa, Floxa-cillin – better oral absorption |
|
There are Staphylcoccal strains that are resistant to: (6 different antibiotic classes)
|
1. All penicillins including penicillinase resistant
2. All cephalosporins 3. All aminoglycosides 4. All tetracyclines 5. Erythromycin 6. Clindamycin |
|
Mechanisms of Resistance - Name the antibiotic class for each example
1. Enzymes that destroy the drug 2. Decreased cell permeability or increased efflux of drug (spitters) 3. Altered antibiotic target |
1. Penicillins
2. Tetracyclines 3. Erythromycin |
|
T/F - If you are allergic to 1 penicillin you are allergic to them all
|
True
|
|
T/F - Allergy to penicillin is dose-dependent
|
False
|
|
Drugs to give for penicillin allergic reaction:
1. Mild case 2. Severe case |
1. Benadryl - diphenhydramine or another H1-receptor blocker
2. Epinephrine injection 1:1000 |
|
Drug Toxicity is VERY different from allergic response in 4 specific ways:
|
1. Can occur on 1st exposure
2. Phenomenon is dose-related 3. Involves specific tissue receptors 4. Symptoms appear in tissues harboring specific receptors |
|
MOA of cephalosporins
|
Cell wall synthesis - bacteriocidal
|
|
1. ____% incidence of cross-allergenicity of cephalosporins and penicillins
2. Cephalosporins are specifically indicated in the prophy of ________ |
1. 10%
2. Joint replacement patients |
|
1. Name gram positive bacteria covered by Cephalosporins (4 of them)
2. ame gram positive negative covered by Cephalosporins (5 of them) |
1. Staphylococci
Streptococci Pneumococci Clostridium 2. Escherichia coli Proteus Klebsiella Neiserria Bacteroides |
|
1. Name 3 examples of Macrolide antibiotics
2. Are these bacteriocidal or -static 3. Whats their MOA? |
1. Erythromycin, Clarithromycin, Azithromycin
2. static 3. Attack 50s bacterial ribosome subunit |
|
Name Antiobiotic:
1. Indications - Diptheria, Legionairre’s, Mycoplasma, Bordatella, Pen-V sensitive infections in penicillin-allergic individuals 2. Main side effect - Bad GI upsets 3. Cytochrome P-450 (CYP-3A4, -1A2) inhibition |
Erythromycin
|
|
Name that Antibiotic:
1. More rapid and complete absorption than E-mycin 2. Longer T1/2 than erythromycin 3. Better tolerated (GI) than erythromycin 4. Endocarditis prophylaxis (500 mg) in penicillin allergic individuals 5. Cytochrome P-450 (CYP-3A4) inhibitor |
Clarithromycin
|
|
What foods do YOU NOT want to eat when taking erythromycin and clarithromycin?
Both ABs and the food above are __________ |
Grape Fruit juice
CYP450-3A4 inhibitors |
|
Macrolides especially clarithromycin CANNOT be combined with ____________ (an antipyschotic med) - can cause death.
|
Pimozide
|
|
What Antibiotics cannot be combined with the following and why?
Terfenadine (Seldane®) Astemizole (Hismanal®) Theophylline Warfarin Statins Midazolam Cisapride (Propulsid®) Pimozide (Orap®) Bromocriptine (Parlodel®) Carbamazepine (Tegretol®) Cyclosporine (Sandimmune®) |
Macrolides, particularly erythromycin and clarithromycin
they are 3A4 & 2C9 inhibitors and will cause Increase in drug levels -- nasty/fatal consequences |
|
Name that Antibiotic:
1. Indications - Periodontal Abscesses, URIs, LRIs, skin and soft tissue, occasionally oral infections 2. Unique Feature - taken up by phagocytes and delivered by them to the infected site 3. Very Expensive 4. ****NO CYP450- 3A4 Interactions*** -- ONLY macrolide that has this property |
Azithromycin (Zithromax)
|
|
1. This Antibiotic Class is infamous for CHELATING divalent and trivalent cations
2. Problems in developing teeth when mother takes it while preggo |
Tetracyclines
|
|
This antibiotic must not be taken with milk or Iron supplements - it will lower the blood levels of antibiotic
|
Tetracyclines
|
|
Name that Antibiotic:
1. Very broad spectrum 2. Bacteriostatic 3. Inhibits 30s bacterial ribosomal subunit -->binds aminoacyl-tRNA synthetases to ribosomal receptor 4. Other effects: inhibit tissue collagenases and metalloproteinases 5. Other effects: Enhance periodontal reattachment and bone formation |
Tetracyclines
|
|
What is the main UNIQUE feature of tetracyclines (where do they concetrate)?
|
They will be concentrated in gingival crevicular fluid
|
|
Name that antibiotic:
1. Mechanism of action - 50S ribosome, protein synthesis inhibitor 2. Absorption - nearly 100% PO Actively transported into macrophages and WBC providing high [ ] in abscesses and bone (similar to Azithromycin) 3. Uses: Prophylactic endocarditis and joint regimens, patients allergic to penicillin, Endodontist love this antibiotic |
Clindamycin
|
|
1. What antibiotics can causes pseudomembranous colitis?
2. Whats the treatment? 3. Should you use narcotics as therapy |
1. Clindamycin, cephalosporins, and other broad spectrum ABs
2. Vancomycin or Metranidazole 3. NO - its contraindicated |
|
Name that antibiotic:
1. Indications: Trichomonas, amebic infections, Giardia, and anaerobic bacterial infections 2. MOA - bacterialcidal --> disrupt bacterial DNA 3. Uses - **Highly effective against anaerobic bacteria ** -> Perio, endo, oral surgery --> Most often given with Pen V 4. ADR - CYP450-2C9 inhibitor -->Disulfram effect with EtOH --> Warafin --> Increases levels --> bleeding |
Metranidazole
|
|
Name that Antibiotic:
1. Inhibits bacterial DNA gyrase 2. Bacterialcidal 3. Spectrum: Facultative gram negative Bacteria, but not strict anaerobes 4. Absorption: Inhibited by divalent and trivalent cations (like tetracyclines) |
Fluoroquinolones - Ciprofloxacin
|
|
Fluoroquinolone ADRs
1.? 2.? |
1. Increased photosensitivity (like tetracyclines)
2. CYP450 - 1A2 inhibitor |
|
T/F - Dental procedures cause the most cases of Endocarditis
|
False - cause ~4% of the cases
|
|
In which cases Are Prophylactic antibiotics for Endocarditis Indicated/reasonable?
1. Prosthetic cardiac valve or prosthetic material used for valve repair 2. Previous infective endocarditis 3. Unrepaired cyanotic CHD including palliative shunts and conduits 4. Completely repaired congenital heart defect with prosthetic material -- 6 months after surgery 5. Repaired CHD with residual defects adjacent to the site of prosthetic patch 6. Ventricular-septal defect 7. Heart transplants - no valvulopathy 8. Mitral valve prolapse 9. Pacemakers placed 10. CABG patients 11. Functional or innocent murmurs |
1-->6 -- prophy indicated
7-->11 -- prophy is not indicated |
|
For those patients who are indicated for Endocarditis prophy, what procedures are indicated for prophy? (VERY general)
|
those that cause gingival or mucosal bleeding
|
|
1997/2007 Endocarditis Prophy Recommendations
1. Non-Pen Allergy 2. Pen allergy 3. When to take |
1. Standard: Amoxicillin 2 grams (50 mg/kg Peds)
2. Penicillin Allergic: -->Clindamycin 600 mg (20 mg/kg Peds) -->Azithromycin or Clarithromycin 500 mg (15 mg/kg Peds) -->Cephalexin or Cefadroxil 2 grams‡ (50 mg/kg Peds) 3. All regimens one hour before procedure |
|
Joint Prophylaxis Regimens
1. Non-pen allergic 2. allergic to Pen 3. What type of bacteria are these trying to target? |
Not Allergic to Penicillin:
-->Cephalexin 2 grams or -->Cephradine 2 grams or --> Amoxicillin 2 grams 2.Allergic to Penicillin: -->Clindamycin 600 mg 3. Staphylococcal infections |
|
1. Fungal membranes have _________ which is very close in structure to cholesterol
2. This causes problems with systemic dosing of antifungals because there is lower __________ |
1. Ergosterol
2. Selective toxicity |
|
1. 3 things in fungi are close to humans which antifungals attack
|
1. Ergosterol close to cholesterol
2. RNA similar to humans 3. CYP450 is similar to humans |
|
3 reason why fungal infections are becoming more prevalent
|
1. Increased AIDS/HIV infection
2. Patients undergoing chemotherapy 3. Increased use of broad spectrum antibiotics |
|
Name that anti-fungal:
1. MOA - punches holes in membranes with ergosterol - binds ergosterol 2. Can be used as an antibiotic 3. Very large structure like macrolide antibiotics 4. Administration routes - orally (rinse), systemically, lozenge |
Amphotericin B
|
|
T/F - oral rinse/lozenge amphotericin B is not absorbed systemically
|
True
|
|
1. IV formulation - very nasty drug to give via IV
2. Nephrotoxicity is the dose-limiting factor 3. MOA - binds ergosterol |
Amphotericin B - IV formulation = Amphotec ®
|
|
T/F - amphotericin has greater affinity for ergosterol than for cholesterol
--> if it hits ergosterol it will leave lipsome --> if it hits cholesterol it will stay in liiposome |
True
|
|
Name that Anti-fungal
1. Similar to Amphotericin B 2. Also can be used as anti-biotic - binds membranes (ergosterol) 3. There is NO IV formulation 4. Used for Candida infections and stomatitis 5. Huge polar molecule that won't get absorbed systemically 6. Major problem = AWFUL taste |
Nystatin (Mycostatin ®)
|
|
Name that anti-fungal
1. Binds to fungal RNA inhibits DNA and RNA synthesis 2. Active metabolite, 5-flurouracil, is actually an anticancer drug |
Fluorocytosine or Flucytosine
|
|
Name that anti-fungal:
1. Mitotic spindle poison 2. used for nail infections 3. Major Side effect - can lower count of blood cells 4. Unique - **BEST absorbed when taken with fatty meals** 5. It is a CYP450 inducer -- lowers warfarin levels |
Griseofulvin
|
|
Name that class of anti-fungal
1. much better therapeutic index than amphotericin or flucytosine 2. MOA - work by inhibiting cytochrome P-450 in the fungus, which in turn blocks the conversion of lanosterol to ergosterol 3. **Many drug interactions because it inhibits CYP450 3A4** |
Azoles
|
|
Name the anti-fungal
1. greatest affinity for human CYP-3A4 2. It is best absorbed at lower gastric pHs (increased acidity) and it is thus recommended that it be taken with acidifiers such as orange juice or with a meal. 3. decrease the synthesis of human adrenal and gonadol steroid hormones--> gynecomastia (enlarged breasts in men), infertility and menstrual irregularities |
Ketoconazole (Nizoral®) and Itraconzole (Sporanox®)
|
|
Name that Anti-fungal
1. most commonly prescribed systemic azole 2. used frequently in oropharyngeal and esophageal candidiasis, especially in AIDS 3. good penetration into the central nervous system, which is unlike ketoconazole or itraconazole 4. lowest affinity for human cytochrome P-450 |
Fluconazole (Diflucan®)
|
|
Name that Anti-fungal
1. Topical antifungals marketed as creams and suppositories to treat vaginal candidiasis |
Clotrimazole (Lotrimin® and Mycelex®) - available as lozenge
Miconazole (Monistat®) |
|
These drugs are used for the treatment of _______?
1. Acyclovir (Zovirax®) 2. Valacyclovir (Valtrex®) 3. Ganciclovir (Cytovene®) |
Herpes Virus treatments
|
|
Name that Anti-viral:
1. Major drug directed against Herpes Simplex and Varicella virus including genital and labial herpes 2. requires 3 phosphorylation steps (the first using viral enzymes, the next two using host cell enzymes) 3. inhibits viral DNA synthesis - with triphosphate form of drug 4. Only infected cells phosphorylate the parent compound 5. Anti-herpes |
Acyclovir (Zovirax®)
|
|
Name that anti-viral
1. Prodrug rapidly converted to Acyclovir by first pass effects in gastrointestinal tract and liver. 2. Everything else is similar to Acyclovir. 3. Anti-herpes |
Valacyclovir (Valtrex®)
|
|
Name that anti-viral:
1. Similar to Acyclovir with 100 times the potency and greater selectivity for the Cytomegalovirus (CMV) 2. Anti-herpes meds 3. Bone marrow suppression including neutropenia, anemia and thrombocytopenia can occur with this drug |
Ganciclovir (Cytovene®)
|
|
Cocktail normally given to HIV/AIDS patient
|
1. Two reverse transcriptase inhibitors
2. Protease Inhibitor |
|
These drugs are in the ________ class of __________
1. Zidovudine (AZT, Retrovir®) 2. Didanosine (DDI, Videx®) 3. Lamivudine (Epivir®) 4. Efavirenz (Sustiva®) |
1. Reverse Transcriptase inhibitors
2. Anti-virals |
|
Name that Anti-viral
1. Inhibits the synthesis of viral DNA from RNA and ultimate HIV replication. 2. Reverse transcriptase inhibitor 3. Major toxicity is bone marrow suppresion |
Zidovudine (AZT, Retrovir®)
|
|
Name the anti-viral:
1. Most often combined with Zidovudine --> reduces HIV resistance 2. Major toxicity = dose-dependent pancreatitis 3. Reverse transcriptase inhibitor |
Didanosine (DDI, Videx®)
OR Lamivudine (Epivir®) - less pancreatitis |
|
Name that anti-viral
1. new non-nucleotide reverse transcriptase inhibitor 2. Better tolerated than other drugs of this class 3. part of a triple drug regimen when protease inhibitors are contraindicated. |
Efavirenz (Sustiva®)
|
|
HIV drug class where large polyproteins are produced that need to be cleaved by a viral encoded protease for final assembly by the mature virion --Inhibit the process
|
Protease inhibitors
|
|
1. Drugs in class are:
a. Indinavir (Crixavan®) b. Ritonavir (Novir®) c. Saquinavir (Invirase®) 2. produce elevated blood glucose and lipids, plus lipodystophy (a peripheral fat wasting with central adiposity). 3. Diarrhea is also frequent with these drugs. 4. Cytochrome P-450 inhibition is common 5. Used as HIV drug |
Protease Inhibitors
|
|
Drug class for anti-virals:
1. work by preventing HIV from entering healthy CD4 cells 2. CCR5 receptor is located on other immunocompetent cells, there is a theoretical risk of developing life-threatening infections and cancers while on this drug |
Entry and Fusion Inhibitors
|
|
Name that anti-viral
1. Entry and fusion inhibitor 2. MOA - attaching themselves to proteins (CCR5 receptor) on the surface of the CD4 cells |
Maraviroc (Selzentry®)
|
|
Name that anti-viral:
1. MOA - bind to proteins (gp120 or gp 41) on the on the HIV surface 2. injectable agent given twice per day subcutaneously 3. Can develop bacterial pneumonia on this drug |
Enfuvirtide (Fuzeon®)
|
|
Name that anti-viral
1. MOA - blocks the incorporation (or integration) of the new form viral DNA (via reverse-transcriptase) into the CD4 cell’s DNA 2. NOT prescribed in conjunction with STATIN - due to increased muscle pain |
Integrase Inhibitor - Raltegravir (Isentress®)
|
|
Name 2 anti-flu drugs (NOT neurominidase inhibitors)
1. Drugs directed against influenza virus 2. Most effective when taken at first sign of flu symptoms 3. Both drugs inhibit the viral uncoating process |
Amantadine (Symmetrel®) and Rimantadine (Flumadine)
|
|
1. Anti-parkinson's drug that is used to treat the flu
2. Increases dopamine levels |
Amantadine
|
|
1. Anti-flu drugs
2. Neurominidase inhibitors -->Inhibits enzyme on the surface of the influenza virus that plays an essential role in the release of viruses from infected cells |
Zanamivir (Relenza®) - available as inhalant
Oseltamivir (Tamiflu®) - only in pill form |
|
1. What claims can herbals and supplements make?
2. What claims can herbals and supplements NOT make |
1. Maintenance of health - based on structure/function claims
2. Cannot claim treatment of specific disease state |
|
1. Are herbals classified as drugs or foods?
2. What must they provide to FDA? |
1. Foods
2. Safety - very minimal data |
|
What herbal was removed from the market because it contained ________, an indirect sympathomimetic
|
1. Ma Haung
2. Ephedra |
|
T/F - If the FDA or some 3rd party challenges the claims made by herbal company they are urged to provide evidence but are NOT required to substantiate the claims
|
False - must substantiate or remove it
|
|
Name that Herbal:
1. Topical use - anesthetic and antimicrobial; found in many moisturizers; used for burns 2. Oral - used as laxative - irritating to large intestine 3. **May inhibit absorption of other oral meds*** |
Aloe vera
|
|
Name that herbal:
1. Uses: improve immune function, strengthen cardio system, improve memory 2. Adverse Rxn - Inhibts platelet aggregation/coagulation, Reduces blood glucose 3. Drug Interactions - Additive hypoglycemia (hypoglycemi-ER) when on other diabetes meds |
Astragalus (huang chi, milk vetch)
|
|
Name that Herbal:
1. Uses - astringent used to treat inflammation of mouth and throat, may treat diarrhea when in tea 2. Claims to treat Diabetes Retinopathy - need more evidence 3. Adverse Rxn - mild anti-platelet activity 4. Drug interactions - mild hypoglycemia with other diabetes meds |
Bilberry fruit (Huckleberry, European blueberry)
|
|
Name that herbal:
1. Used widely in China as female health tonic 2. Uses - PMS, menopause, Fibrolytic breast cancer 3. Adverse Rxns - hypotension and anti-platelet activity in excessive doses; Photosensivity 4. Drug interactions - increases hypotension with BP meds, increases anti-platelet effects with blood thinners (e.g. warfarin) |
Dong quai (Chinese angelica)
|
|
Name that Herbal:
1. Uses - immune system booster; coughs, colds, flu, infections 2. Adverse Rxns - aggravates autoimmune disorders (lupus, AIDS), other collagen disorders, tuberculosis 3. Drug interactions - May counteract immunosuppressive drugs (corticosteroids, cyclosporine, anti-cancer meds) |
Echinacea (Purple cornflower)
|
|
Name that Herbal:
1. Uses - digestive aid, hypertension, hyperlipidemia, lower LDL and triglycerides, Raise HDL 2. Adverse Rxns - allergic respiratory and skin rxns; bleeding from anti-platelet aggregation 3. Drug Interactions - anti-platelet, anti-coagulants --> increased bleeding risk |
Garlic (Allium, stinking rose)
|
|
Name that Herbal:
1. ONE of the only herbals scientifically proven to increase cognitive function - improves memory 2. Uses - Alzheimer's, Dementia, vertigo, peripheral artery occlusion 3. Adverse Rxns - anti-platelet activity, GI upset, headache 4. Drug Interactions - anti-platelet drugs --> increased bleeding risk |
Gingko biloba (Maidenhair tree)
|
|
Name that Herbal:
1. Active components = lactones --> muscle relaxants, anticonvulsants, anti-anxiety 2. Uses - nervousness, insomnia, tension, stress and agitation 3. Orally - has local anesthetic activity 4. Adverse Rxns - LA activity causes numbness of oral mucosa, psychomotor impairment/drowsiness, scaly skin/rash 5. Drug Interactions - supra-additive/additive effects with other CNS depressants (EtOH, diazepams) |
Kava-kava
|
|
Name that Herbal:
1. Scientific data showing improvement of prostate health 2. Uses - anti-inflammatory and testosterone-moderating effects (inhibits dihydroxytestosterone), bladder irritability 3. Adverse Rxns - Mild GI upset, may delay diagnosis of prostate cancer 4. Drug Interactions - possible with other hormone drugs |
Saw palmetto (Sabal)
|
|
Name that Herbal:
1. Better studied supplement 2. Uses - efficacy in moderate to mild depression, PMS cramps, skin injuries/inflammation topically 3. Adverse Rxns - Photosensitivity, headache, GI upset 4. Drug interactions - ***Induces CYP3A4 and CYP1A2 isoforms in GI tract and liver --> decrease blood levels of lots of drugs including oral contraceptives, statins, cyclosporine and warfarin |
St. John’s Wort
|
|
What receptors will histamine stimulate?
|
H1, H2, H3
|
|
Describe the triple response
|
1. Red, raised area at injection site = capillary vasoconstriction
2. edematous area around injection site - BV's become leaky 3. Diffuse red area - called flare area = histamine activating nerve endings |
|
1. H1 receptor stimulation elicits _______? (very general)
2. H2 receptor stimulation causes _______? 3. H3 receptor stimulation causes ______? |
1. Classic allergic response
2. Gastric acid secretion 3. Reduced release of histamine in brain found PRE-SYNAPTICALLY |
|
Modifications to histamine structure:
1. Methylation @ C2 --> 2. Methylation @ C4 --> 3. Methylation @ NH2 on aliphatic chain --> |
1. Specific H1 stimulation
2. Specific H2 stimulation 3. --> (R-alpha methyl histamine) Specific H3 stimulation |
|
Classic Antihistamines have 2 functions (what receptors do they hit?)
|
1. Block Histamine receptors
2. Anti-Muscarinic activity - dry mouth -**Drowsiness - block Ach** |
|
What are 4 functions/treatment uses for Diphenhydramine?
|
1. Allergy
2. Parkinson's Disease - Blocks Ach 3. Anti-Emetic/motion sickness - blocks Ach vomiting center 4. Local Anesthetic |
|
Histamine is an ___________, chemical naturally produced by the body
|
autocoid
|
|
T/F - Mast cells contain H1 receptors
|
False - they contain H2
|
|
T/F - Tissues that Mast cells act upon contain H2 receptors
|
False - they contain H1
|
|
Name the receptor subtype:
1. Found in SM, endothelium, brain 2. 2nd messengers - Inositol, DAG 3. Response - vasodilation, urticaria, triple response, bronchoconstriction, hypotension, reflex tachycardia, pain, diarrhea |
H1 receptor
|
|
Name that receptor subtype:
1. Found in - gastric mucosa, mast cells, brain, cardiac muscle 2. Agonist - 4 -methyl histamine 3. Second messenger - cAMP 4. Response - HCl and pepsinogen release, positive inotorpic and chronotropic effects |
H2 receptor
|
|
Name that receptor subtype:
1. Found in - pre-synaptic neurons in the brain 2. Agonist - R-alpha methyl histamine 3. 2nd messenger - G proteins 4. Response - Decreased NT release in brain, may increase appetite, maintain wakefulness, decreased Ca influx |
H3 receptor
|
|
1. Histamine release and stimulation of allergic response proceeds thru the ______ pathway (antibody).
|
1. IgE --> mast cell degranulation
|
|
T/F - Anti-histamines are good for treating asthma
|
False
|
|
T/F - 2nd generation anti-histamines cross the Blood brain barrier while 1st generation anti-histamines do NOT cross BBB
|
False - 1st gens cross BBB
|
|
1.Treatment for motion sickness should involve antagonism of which type of receptor?
2. What class of drug would you use to do achieve this? |
1. Block Ach in vestibular system
2. 1st gen anti-histamine --> crosses BBB to block muscarinic receptor |
|
What 2 powerful sedatives used in Dental sedation (mainly of Peds cases) are anti-histamines
|
1. Chloral hydrate
2. Promethazine |
|
1. Promethazine has 3 functions (effects multiple receptor types)
2. What Disease must NEVER be treated with Promethazine? |
1. anti-histamine, anti-cholinergic, anti-dopaminergic
2. Parkinson's disease - b/c of anti-Ach and Anti-dopa functions |
|
Name anti-histamine class:
1. Contains drugs - diphenhydramine and Dimenhydrinate (Dramamine) 2. most pronounced anti-cholinergic effects 3. Good treatment for Parkinson's |
Ethanolamines
|
|
Name that class of anti-histamines:
1. Drugs in class - Pyrilamine and Triplenamine 2. Pretty strong anticholinergic activity. 3. They are popular drugs for available OTC sleeping aids |
Ethylenediamines
|
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Name that class of Anti-histamines:
1.Drugs in class: i. Meclizine (bonine) ii. Cylcizine iii. Hydroxyzine – more sedating that previous 2 2. Cause little sedation 3. Excellent anti-motion activity b/c anti-cholinergic effects |
Piperazines
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Name that class of Anti-histamines:
1. They are OTC cold remedies mainly b/c of anticholinergic activity 2. Drugs in class - chlorpheniramine -- very similar to Dimeatapp 3. Dries Nasal passages |
Alkylamines
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Name that class of Anti-histamines:
1. Drug example - Promethazine 2. good antiemetic for drug induced vomiting and motion sickness 3. Both Anti-Ach and Anti-dopa activity 4. **alpha1 blockage so SEs can include postural hypotension** 5. Side FX - extrapyramidal effects, CYP450-2D6 inhibitor |
Phenothiazides
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Name that class of Anti-histamines:
1. Drugs - a. Fexofenadine (allegra) b. Loratidine (Claritin) c. Cetirizine (Zyrtec) 2. NOT cardiotoxic 3. Do NOT cause a lot of antimuscarinic effects 4. Do NOT cross BBB |
2nd generation H1 receptors blockers
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1. Emergency drug used for laryngospasm
2. Rec Dose |
1.Succinylcholine (Anectine)
2. 10-40 mg IV |
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1. Emergency Drugs for asthmatic attack? (name 3)
2. Rec dose |
1. B-2 agonists like -
i. Albuterol (Proventil) ii. Metaproterenol (Alupent) iii. Terbutaline (Brethaire) 2. 2-puffs off inhaler |
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1. Emergency Drug used to treat Acute Angina attack
2. Rec Dose 3. How many doses can be given? 4. What are 2 side fx? |
1. Nitroglycerine (Nitrostat)
2. Treatment --> 0.15 – 0.60 mg sublingually 3. 3 doses 4. Orthostatic hypotension & methemhemoglobinemia |
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1. Emergency Drugs given for Allergic Rxns
2. Rec Dose |
1. Diphenhydramine for mild attack; Epinephrine for severe attack
2. Diphenhydramine - 10-15 mg IM or 25-50 mg PO 3. Epinephrine (Adrenaline) → 1:1000 (1 mg/ml) |
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1. Emergency Drug Given for Convulsions
2. Rec Dose 3. Realistically what do you want to do? |
1. Diazepam
2. 10 mg (slowly) – 2 mg/min – IV 3. 1st – get everything out of there mouth 2nd – clear the area and put them in to safety position |
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1. Emergency Drug used to prevent additional platelet aggregation during MI
2. Rec Dose |
1. Aspirin --325 mg PO (If conscious)
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1. Recommended Drugs and Dose used to treat pain from MI
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1. Morphine → 10 mg IM
2. Meperidine (Demerol) → 50-100 mg IM 3. Nitrous Oxide/O2 → 50% by inhalation |
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1. If you use opiod you must have ________ and _________in office in case of respiratory depression
2. Rec Dose |
1. Naloxone and Naltrexone
2. Dose → 0.4 mg IM or IV followed by 50 mg naltrexone PO when patient become conscious |
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1. Emergency drugs and doses used for treatment of hypoglycemia
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1. Conscious pt- give sugar- orange juice, cake icing
-->3-4 ounces PO every 5 minutes until symptoms are gone -->Cake icing can be place sublingually Unconscious- glucagon 1mg IM |
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1. Emergency drug used to treat poisoning
2. Rec Dose |
1.Syrup of ipecac (Emetine)-
2. Dosing – 15-30 mg PO |
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T/F - Ipecac (Emetine) works best on empty stomach
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False - works better if taken with full glass of water
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1. Anti-muscarinic drugs used to treat GI ulcers/symptoms
2. Side FX of these drugs? |
1. Atropine and Pirenzepine
2. Xerostomia, Dry eye, Mydriasis, increased HR and contraction force, NO sweating |
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1. Anti-histamine drugs used to treat GI ulcers/symptoms
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1. H-2 blockers -
1. Cimetidine (Tagamet) 2. Ranitidine (Zantac) 3. Famotidine (Pepcid) 4. Nizatidine (Aczid) |
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1. Side Fx of H2 blockers - mainly with Cimetidine (Tagament)
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1. Anti-androgen effects like gynecomastia, galactorrhea in women
--> (elevations in prolactin/endometriosis/cross BBB) 2. Inhibits cyp 450 3A4 enzymes |
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1. Prostaglandin Agonists/analogs used to treat GI ulcer/symptoms
2. Are these recommended and why? |
1. Misoprostol (Cytotec) and Arthrotec (combination of Diclofenac/Misoprostol)
2. NO - misoprostol is an abortofactant - induces uterine contractions |
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1. Proton-Pump Inhibitors used to treat GI ulcer/symptoms
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1. Omeprazole (Prilosec)
--> (used to txt heart burn and dyspepsia) 2. Lansoprazole (Prevacid) 3. Esomeprazole (Nexium) -->a. Active isomer (S) of omeprazole |
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Omeprazole is processed by ____________ so can have drug accumulation with an inhibitor on board too
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CYP 450 2C9 - same as diazepam, warfarin, etc
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Name the New Side Effect seen in women when on chronic high dose PPI’s
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→ Osteoporosis
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2 Drugs used to treat H. pylori and GI ulcer symptoms as combo drugs?
1. _______ = clarithromycin + bismuth + ASA 2. _______ = amoxicillin + bismuth + ASA |
Biaxin = clarithromycin + bismuth + ASA
Trimox = amoxicillin + bismuth + ASA |
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1. Antacids are salts of _________ (4 of them)
2. Tums = _______ 3. Side Fx of _________ = diarrhea 4. Side Fx of ________ = constipation 5. Maylox and Mylanta are 50/50 mixes of these 2 cations ____ & _____? |
1. Salts of Al, Mg, Ca, or Na
2. Calcium carbonate 3. Mg 4. Al 5. Mg and Al |
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1. __________ is a "crater filler" used for people who can't tolerate H2 blockers or PPI's
2. What is the molecule made up of (2 things)? 3. What is the consequence of its make up? |
1. Sucralfate (carafate)
2. Sucrose with many Al cations sticking off of it 3. Lots of Al --> causes extreme constipation |
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Name that GERD drug:
1. Prokinetic class 2. Stimulates Peripheral cholinergic receptors 3. Increase contraction of esophageal sphincter 4. Relaxes duodenal sphincter 5 ***Increases Peristalsis*** 6. **Blocks Dopaminergic Receptors** |
Metoclopramide (Reglan).
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Name that GERD drug:
1. Increases peripheral action of Ach 2. Prokinetic drug 3. Many many problems with this drug 4. i. Inducing cardiac arrhythmias ii. Torsades de pointes iii. CYP450-3A4 interactions iv. High incidence of ventricular arrhythmias |
Cisapride
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Name that Anti-Emetic drug:
1. Anti-dopaminergic 2. Used for drug-induced vomiting 3. In phenothiazide class (with Promethazine) |
Prochlorperazine (compazine)
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Name that Anti-Emetic drug:
1. Anti-dopaminergic 2. Used for drug-induced vomiting 3. rectal suppository admin (it is for projective vomiting) |
trimethobenzamide (tigan)
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Name that Anti-Emetic drug:
1. Anti-dopaminergic 2. Used for drug-induced vomiting 3. Anti-histamine 4. Anti-cholinergic 5. Anti-dopaminergic 6. Used in Sedation of children |
Promethazine (Phenergan)
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Name that Anti-Emetic drug:
1. Anti-dopaminergic 2. Used for drug-induced vomiting 3. Prokinetic drug used to treat GERD 4. If you push dose it starts blocking 5-HT receptors |
Metoclopramide (reglan)
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Name that Anti-Emetic:
1. Seretonergic blocking agent 2. Good for drug-induced vomiting 3. Used for anti-cancer chemo-induced vomiting 4. Major drug given pre-infusion of cancer chemotherapy agent. 5. Used for severe vomiting caused by opioids and LA drugs too. |
Ondansetron (zofran)
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Name that Anti-Emetic:
1. Seretonergic blocking agent 2. Good for drug-induced vomiting 3. Used for anti-cancer chemo-induced vomiting 4. Active ingredient in Marijuana 5. Blocks 5HT-3 as well as cannibanoid receptors |
Dronabinol (marinol)
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