HSS 1100 Lecture 5: Microbio Lecture 5

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 1100
• Professor: Franco Pagotto

Document Summary

Pxo1 (encodes subunits of exotoxin responsible for anthrax) versus pxo2 (encoded) Anthrax is usually gotten from animal hides and soil. Enterotoxins because they effect the gi tract - are exotoxins. Causes heart problems - is what kills. Crosses the 3 protective barriers we have. Bacteriophages actively give it the ability to make exotoxin. Shutting down of kidneys caused by this is called hus - hemolytic unemic? syndrome. Commonly seen in areas of poor sanitation. Most common cause of food bourn infection. Emb and macconkey agars are best for gram - Can or cannot ferment lactose - if can - pink. Unique because it is not person to person. Produces tonnes of urease to neutralize stomach acid. Being able to make a spore means that the bacteria can make a shell and resist uv, disinfectant, drying, ect. Spore state - metabolically inactive and cannot cause disease. 5 min under heat instead of brief pass because of waxy coat.