Microbiology and Immunology 3820A Lecture Notes - Lecture 10: Pyoverdine, Calcaneus, Stenotrophomonas Maltophilia
4 Mar 2016
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(dr. colby) lecture 4 - gram negative rods. The sames ones are associated with humans everytime similar and would be 1 group but they are vastly different in function/behavior. Human 99. 997 genes are the same but so. The enteric bacteria (family name enterobacteriaceae) in gut. The nonfermenters (tough bugs diagnose + treat) The unusual gram- negative bacilli (ubs)* *<1% of clinical isolates, often zoonoses (acquired from animals: enterobacteriaceae. ~ 120 species, all closely related dna relatedness, they are different. 80- 95% of all isolates from a clinical setting will be escherichia coli, klebsiella pneumoniae or proteus mirabilis. > 99% of clinical isolates will belong to only 23 species. Ferment glucose: reduce nitrates to nitrites causes colon ca in some (nitirites are carcinogenic) Flagella, if present, are peritrichous (all over cell) (one exception) if they are motile. Normal flora of the mouth, oropharynx, genitalia, distal urethra and especially the large bowel.
