Gram Negative Flashcards
9 -be bacteria
Campylobacter jejuni, escherichia coli, haemophilus influenzae, neisseria meningitidis, salmonella, shigella, yersinia enterocolitica, helicobacter pylori, pseudomonas aeruginosa
Campylobacter jejuni shape/ID
Helical
escherichia coli shape/ID
Bacillus
haemophilus influenzae shape/ID
Coccobacillus
neisseria meningitidis shape/ID
Diplococcus (intracellular in neutrophils and macrophages)
salmonella shape/ID
Bacillus (intracellular)
shigella shape/ID
Bacillus
yersinia enterocolitica shape/ID
Bacillus
helicobacter pylori shape/ID
Helical
pseudomonas aeruginosa shape/ID
Bacillus
Bacillus
Pseudomonas aeruginosa,helicobacter pylori, yersinia enterocolitica, shigella, salmonella (intracellular), escherichia coli
Pseudomonas aeruginosa,helicobacter pylori, yersinia enterocolitica, shigella, salmonella (intracellular), escherichia coli
Bacillus
Helical
Helicobacter pylori, campylobacter jejuni
Helicobacter pylori, campylobacter jejuni
Helical
Campylobacter Baxter virulence factors
Cytothelial distending toxin, S layer (prevents binding of complement)
Campylobacter Baxter condition
Diarrhoea + severe abdo pain (IBS and reactive arthritis can follow. Rare: antibody cross reacting to cause guillain-barre)
Campylobacter Baxter treatment
Don’t treat, norfloxacin if severe (fluoroquinolone)
Escherichia coli virulence factors
variable virulence. Expression of toxin, adhesins and invasin factors, biofilm, flagella.
EPEC - (enteropathic) has short adhesins and shortens villi.
STEC - shiga toxin binds to GB3 halting protein synthesis and causing apoptosis (CNS, kidney effects)