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82 Cards in this Set
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ability of individual to resist infe tion by nornally present body function |
Natural innate immunity |
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what are the furst external defense |
physical barrier. chemical barrier. normal flora. physiologic processes. and miscellanous |
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what are the physical barriers |
unbroken skin mucous membrane nasal hair vaginal acidity cillia of respiratory tract |
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chemical barriers |
mucus sebum sweat cerumen acids tears saliva lysozymes |
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sweat contains? its ph? |
lactic acid. ph 5 |
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competes with pathogens for nutrients |
normal flora |
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physiologic processes |
sneezing coughing vomiting gag reflex perspiration shivering crying urination defecation clotting yawinibg burping |
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miscellanous |
body temp age ph hormones |
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second line of defense also known as |
internal defense system |
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2nd line defense system is divided into |
cellular and humoral |
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cellular components |
phagocytes basophil eosinophil mast cell NKC Antigen presenting cell acute phase reactants |
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phagocytes |
neutrophil and monocytes/macrophage |
2 types |
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humoral components |
cytokines complement interferon inflammation lysozymes |
c2i2l |
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it is the engulfment and destruction of foreign cells or particulates by leukocytes macrophages and other cells |
phagocytosis |
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consists of recognition and ingestion of larger particles also known as |
phagosome |
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adherance of the recwptors on the endothelial cell walls of blood vessels and pentrates tissues through |
diapedesis |
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cells are attracred to the site of inflammation by chemical substances |
chemotaxis |
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steps of phagocytosis |
chemotaxis adherence engulfment phagosome formation fusion digestion |
CAEPFD |
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via PRR PATHOGEN RECOGNITION RECEPTORS uses pathogen associated molecular pattern on the microbe surface |
direct interaction |
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attach to foreign substances and prepare it for phagocytosis |
opsonins |
para mas masarap nirready nito yung nonself. parang msg |
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pseudopodia surround the pathogen then fuse to for a vacuole PHAGOSOME. then converted into phagolysosome |
ingestion |
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occurs inside the phagolysosome |
digestion |
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produced in the digestion process that is toxic to pathogens |
nitric oxide |
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NADPH OXIDASE forms o2 radicak which is toxic to the pathogens |
oxygen-dependent mechanism |
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superoxide is converted into kore stable oxidative burst product which is |
H202 |
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involves DEFENSINS which are antibiotic like made by phagocytes inbolves DIGESTIVE ENZYMES present in the phavolysosome |
oxygen independent mechanism |
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lipopeptides. targets mycobacteria |
TLR1 |
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peptidoglycan, lipoproteins zymosan targets g- bacteria, mycobacteria and yeasts |
TLR2 |
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lipopolysaccharides, fusion proteins and mannan. targets g- bacteria rsv fungi |
TLR 4 |
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flagellin targets bacteria w flagellae |
TLR5 |
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lipopeptides lipoteichoic acid zymosan. targets mycobacteria g- bacteria and yeasts |
TLR 6 |
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TLR receptors found in endosomal compartments |
TLR 3, 8, 7, 9, 10 |
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TLR 3 |
double stranded RNA. targets rna viruses |
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sibgle stranded rna. targets rna virusea |
TLR 7 |
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single stranded rna. targetz rna viruses |
TLR8 |
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double stranded dna. targets dna viruses bacterial dna |
TLR 9 |
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unknown. targets unknwon |
TLR 10 |
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normal serum constituents that increase repidly because of infection injury or trauma |
Acute phase reactants |
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functions of APR? |
binds ro microorganisms promoting adherence limuts destruction caused by the release of proteolytic enzymes from WBCs |
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examples of acute phase reactants |
c-reactive protein serum amyloid a complement alpha 1 antitrypsin haptoglobin fibrinogen ceruloplasmin |
CSCA1HFC |
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APR are produced by |
hepatocytes |
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aprs are produced with _____ in response to ? |
12-24 hrs, cytokine |
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what rae the cytokines involved |
interleukin 1, interleukin 6, tumor necrosis factor alpha |
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most widely used indicator of acute inflammation |
C Reactive Protein |
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who discovered c reactive protein |
tillet and francis in 1930 |
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c reactive protein peaks within |
48 hrs |
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it promotes phagocytosis by binding specific receptors found on monocytesacrophages and neutrophils |
c reactive protein |
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average low risk |
<1mg/l |
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high risk |
1-3 mg/l |
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>3mg/L |
high risk |
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crp is easily destroyed by heating at __ for ___ |
56C for 30 mins |
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normal level of AAA in adults |
5-8 ug/ml |
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saa has high affinity for |
good cholesterol (hdl) |
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acts as a chemical messenger similar to a cytokine, and it activates monocytes and macrophages |
Serum amyloid a |
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increases more in ____ than in ____ |
bacterial infection, viral infection |
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saa peak bet ____ after acyte infecyion |
24-48 hrs |
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major functuon of complement |
opsonization chemotaxis lysis of cells |
OCL |
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refers to as series of serum protein that are normally present and whose overall function is mediation of inflammatiob |
complement |
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a 52 kd protein that is primarily synthesized in the liver |
Alpha 1-antitrypsin |
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linuts harmful effects of inflammation |
AAT |
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a general plasma inhibitor of proteases that is released by leukocytes also regulates espression of proinflammatory cytokines such as TNF- alpha, interleukin-1beta and IL6 |
AAT |
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increases ____ following inflammation stress and tissue necrosis |
2 flods |
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normal plasma concentration of haptoglobin |
40-290 mg/dl |
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most abundant coagulation factor |
fibrinogen |
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fibrinogen is cleaved by |
thrombin |
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nornal levels of fibrinogen |
200-400 mg/dL |
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deficiency of ceruloplasmin is associated with |
wilsons disease |
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acts as opsonin which is calcium dependent |
mannose- binding protein |
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cardinal signs of inflammation |
redness. heat. swelling. pain. loss of function |
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redness |
rubor |
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heat |
calor |
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swelling |
edema |
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pain |
dolor |
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large granular lymphocytes. null cells. kiss of death |
natural killer cells |
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first line of defense against vurally infected cells |
natural killer cells |
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have the ability to recognized any damaged cell and to eliminate such target cells without prior exposure to them |
NK CELLS |
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inhibitory signal of nk cells |
MHC-1 |
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inhibitory receptors that bind with MHC-1 |
killer cell immunoglobulin like receptors CD94/NKG2A receptors |
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activating receptors that binds stress proteins |
CD16 NKG20 |
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proteins form channels in the target cell membrane |
perforins |
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packets of enzymes that may enter through tha channels and mediate lysis |
Granzymes |
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small proteins that act ast chemical messenger which regulates immnue system |
cytokines |
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