HSS 1100 Lecture Notes - Lecture 4: Gram-Positive Bacteria, Gram-Negative Bacteria, Enterotoxin

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

Document Summary

Lecture 4 gram positive cocci (feb 1) Gram positive bacteria do not have endotoxins do not have second cell wall like gram negative bacteria. Enterotoxin affects gastrointestinal tract, act as super antigens (activates up to 20% of all. Scanning looks like grape clusters, in transmission the gray thing is peptidoglycan layer. Impetigo is only caused by staph (for this class) Can result in bacteremia and blood poisoning if enters blood stream (improper cleaning before insertion of needle) It is gamma hemolytic because it has no activity on red blood cells. Group a is what causes strept throat. Can lead to rheumatic heart disease (thanks antibodies) Immune system will recognize antigen non strep similar to antigen on heart, meaning antibodies made for strep will result in antibodies made against heart resulting in autoimmune disease (rheumatic heart disease) If give kids candy, tongue can become red and lead to misdiagnosis. Almost every cell is surrounded by hyaluronidase.