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Micro 6-1

Duke PA micro

QuestionAnswer
acinetobacter - gram negative or positive? negative
acinetobacter - aerobic or anaerobic? aerobic
acinetobacter "plump" cocobacilli that are ubiquitous saphrophytes
What is acinetobacter similar to, in epidemiologic niche? Pseudomonas and Enterobacter
What type of surfaces can Acinetobacter survive on? both moist and dry surfaces for long periods
Are Acinetobacter, Pseduomonas and Enterobacter important nosocomial pathogens? yes
Acinetobacter - normal flora oropharyns of small %age of population, can increase in large numbers in hospitalized patients
Moraxella - gram negative or positive? negative
Moraxella - aerobic or anaerobic? aerobic
How many species of Moraxella spp.? 7 species
What is the most important Moraxella species? catarrhalis
Moraxella - normal flora oral pharynx
Moraxella virulence factors LPS, polysaccharide capsule, pili, beta-lactamase production
What is the notable virulence factor of Moraxella? beta-lactamase production
Moraxella clinical syndromes sinusitis, otitis media, suppurative conjunctivitis as well as bronchitis - (two other species cause rare, opportunistic infections)
3 important genera of family Neiserriaceae Neiserria, Eikenella & Kingella - other genera rarely associated with disease)
Neiserria - gram negative or positive? negative
Neiserria - aerobic or anaerobic? aerobic
How many species of Neiserria found in humans? 10 species
What are the most important species of Neiserria? N. gonorrhoeae, N. meningitidis - extremely fastidious organisms
Are N. gonorrhoeae and N. meningitidis strict human pathogens? yes!
Where do other species of Neiserria colonize? frequently colonize human upper respiratory tract and less frequently colonize agnogenital mucosa
N. gonorrhoeae and N. meningitidis look like what? "coffee beans" small diplococci with flattened adjacent sides
What replaces traditional LPS of gram negative bacteria in N. meningitidis and N. gonorrhoeae? LOS - functions as endotoxin
What is the function of pili in N. meningitidis and N. gonorrhoeae? attachtment, motility, transfer of genetic info, necessary to cause disease
What are the three outer membrane proteins in N. meningitidis and N. gonorrhoeae? I, II, II
Created by: ges13
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