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44 Cards in this Set

  • Front
  • Back

Chemical substance produce by microorganism

Antibiotics

Limited number of pathogen

Narrow spectrum

Destroy different kinds of organism

Broad spectrum

Produced by bacteria

Natural drugs

Bacillus subtilis

Bacitracin

Bacillus polymyxa

Polymyxin

Streptomyces nodosus

Amphotericin B

Streptomyces venezuelae

Chloramphenicol

Streptomyces erythreus

Erythromycin

Streptomyces noursei

Nystatin

Streptomyces fradiae

Neomycin

Microspora purpurea

Gentamycin

Cephalosporium

Cephalosporin

Penicillium notatum

Penicillin

Modified natural drugs

Semi- synthetic drugs

Chemically produced drug

Synthetic drug

Chloramphenicol

Synthetic drug

Ampicillin

Semi synthetic drugs

Isoniazid

Synthetic drugs

Trimetophrim

Syntehtic drugs

Kill organism: life threatening infection

Bactericidal

Inhibit bacterial growth nut niy actually kill the organism

Bacteriostatic

Tetracyclines

Bacteriostatic

Gentamycin

Bactericidal

Quinolones

Bactericidal

Erythromycin

Bacteriostatic

Inhibits transpeptidation enzymes

Cell wall inhibitors

Cell wall inhibitors

Beta lactams


Beta lactam penicillin


Cephalosporins


Konobactams


Carbapenems


Glycopeptides


Fosfomycin

Antimicrobial actions

Inhibits cell wall synthesis


Inhibits protein synthesis


Inhibits nucleic acid synthesis


Destroy cell membrane


Inhibit essentila metabolites

Inhibits transpeptidation


All are bactericidal


Non toxic

Beta lactams

Beta lactamass enzymes examples

Penicillinases


Cephalosporinases


Cephycinases


Carbapenemases

Organic acids and are most soluble in water

Beta lactam

Broadest spectrum ofaction. Active against high level cephalosporinases of Ebteribacteriacea and P. aeruginosa

4th generation cephalosporin C4G

Inhibits the first step of the peptidoglycan synthesis process and transport precursor

Fosfomycin

Hydrolyzed by most commonly occuring plasmid and chromosomally B lactamases

Monobactams

Cefepime, Cefotetan, Cefoxitin, Cefaclor

4th generation

Wider spectrum, Gram pos cocci but much more active against Enterobacteriaceae and P. aeruginosa

3rd generation cephalosporin C3G

Narrow spectrum; good gram pos activity and modest in gram neg activity

1st generation C1G

B lactams with broad spectrum of action. Gram pos except MRSA; Gram neg Pseudomonas aeruginosa and anaerobes

Carbapenem

Cefunicid, Cefuroxime

2nd generation

Aztreonam

Monobactams

Binds with 50s subunit resulting to misreading of mRNA and interferes with aminoacyl - tRNA binding

Protein synthesis inhibitors (amonoglycosides, tetracycline)

Mistranslation and production of proteins

Aminoglycosides

Binds with 50s subunit resulting to inhibition of peptidyl transferase and inhibits peptide chain elongation

Protein synthesis (clindamycin, erythromycin)