10 Questions
At what temperature do Neisseria species grow on chocolate agar?
37°C
Which Neisseria species is associated with causing gonorrhea?
Neisseria gonorrhoeae
Which Neisseria species is associated with being a commensal in the mouth and throat?
Neisseria catarrhalis
Which virulence factor of Neisseria gonorrhoeae mediates adherence to surface mucosal epithelia?
Pili
Which type of strains producing Por proteins are commonly associated with disseminated disease?
Por-A proteins
Name one virulence factor of Neisseria gonorrhoeae and describe its function.
One virulence factor of Neisseria gonorrhoeae is the Pili, which mediate adherence or colonization of the M.O. to surface mucosal epithelia.
What is the function of Opa proteins in Neisseria gonorrhoeae?
Opa proteins in Neisseria gonorrhoeae mediate adherence of the bacteria to each other, and also to the eukaryotic cells.
What are Por proteins and how do they contribute to the pathogenicity of Neisseria gonorrhoeae?
Por proteins are porin proteins that form pores or channels in the outer membranes. Strains producing Por-A proteins are commonly associated with disseminated disease because these proteins prevent killing of gonococci in the serum by the serum complement components.
How is gonococcal ophthalmia neonatorum acquired, and what is its source?
Gonococcal ophthalmia neonatorum is acquired from the mother's birth canal during childbirth.
What is the mode of transmission for gonorrhea, and what is its association with adults and neonates?
Gonorrhea is a venereal disease transmitted by sexual intercourse. Gonococcal infection in adults is almost always sexually transmitted, while gonococcal ophthalmia neonatorum is acquired from the mother's birth canal.
Test your knowledge of Neisseria species including their characteristics, growth conditions, and pathogenicity. See if you can identify the differences between Neisseria gonorrhoeae, Neisseria meningitidis, and commensal species.
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