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Ch. 33 vocabulary
Bacterial Diseases of the Skin
| Question | Answer |
|---|---|
| Anthrax | Bacillus anthracis--gram-pos. bacillus--spore former--anaerobe--sporse survive in soil for at least 100 yrs--transmitted from cattle to human--prevention-vaccine//tx of cattle--hemorrhaging, boils, bloody diarrhea |
| Catalase | protets bacteria from lysosomeal reactive oxygen compounds |
| Coagulase | clots blood near the infected site to form an abscess and effectively walls off the area from the immune system |
| coagulase test | only S. aureus can coagulate clotting factors in plasma |
| Debridement | removal of dead tissue and foreign material |
| Exfoliatin | causes desquamation or denuding often seen in newborns--called scalded skin syndrome--large areas of skin loosen and peel off leaving raw openings--S. aureus |
| Gas gangrene | gram-pos. bacillus--anaerobe--spore-forming--C. perfringens--bacteria producers of gas, lesions become green and then blacck as organism produces extracellular enzymes--putrefy tissues block blood flow--amputation |
| Hansen's disease | leprosy--rod shaped--does not stain by Grams stain-incubation 2-10 yrs-ddestroys neurons, bone and skin-loss of fingers, toes and nose tissue--tx with reserved ABT for 2 or more yrs-- |
| Hemolysin | produced by S. aureous--destroy red and white blood cells |
| Lepromatous leprosy | organisms multiply to great numbers in mucus and tissues--billions spread from mucus of nose and throat |
| Leprosy | Hanson's disease--disease of skin and neurons--slowly destroys neurons, bone, and skin--loss of fingers, toes and nose tissue common--dx by appearance of skin lesions that have lost sensations--2-10 yrs incubation--tx reserved ABT for 2 or more yrs |
| Leukocidin | produced by S. aureus destroy red and white blood cells |
| Lockjaw | jaw muscles contract intensely--all muscles of body affected--tetnus |
| Nonlepromatous leprosy | not highly contagious--leprosy |
| Protein A | substance produced by the infecting organism to resist host immune system--surface protein binds human Abs by Fc end results in bacterium that appears on surface to be hose--immune system sees Fab arms of host's own Abs |
| Pyogenic | pus-forming |
| Tetany | muscle spasms |
| Tetanospasmin | tetanus due to tetanus toxin--causes tetany and lockjaw |
| Tetanus | gram-pos bacillus, spore forming, anaerobic--Clostridium tetani--muscular in effect--infection via skin wound--causes tetany--boosters required every 10 yrs-80-90% fatal |
| VRE | vancomycin-resisant enterococcus |
Created by:
heatherlvn
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