MBIO 1010 Lecture Notes - Lecture 26: Corynebacterium Diphtheriae, Staphylococcus Epidermidis, Propionibacterium Acnes

• School: University of Manitoba
• Department: Microbiology
• Course: MBIO 1010
• Professor: Christopher Rathgeber

Document Summary

Microbiology 1010 lecture notes: dry skin, moist skin and sebaceous skin, each with different microbial populations. Different areas of the skin vary in chemical composition and moisture content . Skin is slightly acidic and high salt concentration which in turn dehydrates the microbes. Rarely cultured - no one really knows what they"re doing . Most are harmless commensals, but some may cause skin infections . Corynebacterium diphtheriae: can cause non-healing ulcers of the skin cutaneous diphtheria. Diphtheriae = we are protected from the toxin in the dtap vaccine. Moist skin (ex. armpits, nostrils) : high numbers of corynebacteria and staphylococci. Abscess = anaerobic bubble were the interior has no oxygen and the organisms are living off the puss and dead cells. Vascular/ blood is found within the dermis of the skin. Examples of bacteria that live on skin (cid:894)continued (cid:895) Sebaceous skin (ex. oily skin around the nose, on the upper chest and back) .