Bacteriology Lecture: Family Neisseriaceae

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Which genus in the family Neisseriaceae includes the significant human pathogens N.gonorrheae and N.meningitidis?

Kingella

Moraxella

Neisseria (correct)

Acinetobacter

Neisseria gonorrhoeae causes acute pyogenic infection of columnar and transitional epithelium in which of the following body parts?

Urethra (correct)

Lungs

Lower intestines

Kidneys

What is the incubation period for gonorrhea caused by Neisseria gonorrhoeae?

1-2 weeks

1-3 days

5-10 days

2-7 days (correct)

Newborns exposed to Neisseria gonorrhoeae may develop which condition known as Crede’s prophylaxis?

Ophthalmia neonatorum Signup and view all the answers

Which of the following Neisseria species is mostly asymptomatic in both males and females despite being present on mucus membranes?

N.lactamica Signup and view all the answers

Under which conditions is Neisseria gonorheae grown in the laboratory?

High CO2 concentration Signup and view all the answers

Which factor of Neisseria meningitidis prevents phagocytosis and bacteriolysis?

Capsule Signup and view all the answers

What type of disease is meningitis in relation to Neisseria meningitidis?

The most common type Signup and view all the answers

Which sites in the body are affected by the petechial rash associated with Neisseria meningitidis infection?

Lower extremities and joints Signup and view all the answers

Which group carries the highest carriage rate of Neisseria meningitidis?

Military recruits Signup and view all the answers

What stimulates cytokines like interleukins in response to Neisseria meningitidis endotoxin release?

Blood-brain barrier Signup and view all the answers

Which type of diseases can be caused by invasive meningococcal disease?

Meningitis, meningococcemia, and pneumonia Signup and view all the answers

What is the shape of Neisseria gonorrhoeae?

Coffee bean Signup and view all the answers

What is the ideal atmosphere for the growth of Neisseria gonorrhoeae?

5-10% CO2 Signup and view all the answers

What is the purpose of using calcium alginate in specimen collection?

To inhibit bacterial growth Signup and view all the answers

What is the principle behind coagglutination in immunologic method?

Agglutination of antibodies to gonorrheal antigens with S.aureus cells Signup and view all the answers

What is the reagent used in the oxidase test?

Both A and B Signup and view all the answers

What is the name of the syndrome caused by Neisseria gonorrhoeae?

FitzHugh Curtis Syndrome Signup and view all the answers

What is the main component of the chocolate agar base in the Modified Thayer-Martin Culture Medium?

Defibrinated sheep RBC Signup and view all the answers

Which of the following antibiotics inhibits swarming Proteus in the Modified Thayer-Martin Culture Medium?

Trimethoprim lactate Signup and view all the answers

What is the purpose of Co-agglutination test in the diagnosis of N. gonorrhoeae?

To detect the presence of antigens on the surface of N. gonorrhoeae Signup and view all the answers

What is the mechanism of Plasmid mediated high level tetracycline resistance (TRNG) in N. gonorrhoeae?

Pumping out of tetracycline from the cell Signup and view all the answers

Which of the following is NOT a characteristic of DFA?

Uses polyclonal antibodies directed against outer membrane proteins Signup and view all the answers

What is the treatment of choice for resistant strains of N. gonorrhoeae?

Ceftriaxone Signup and view all the answers

What specific condition is caused by a hemorrhage into the adrenal glands in the context of fulminant meningococcemia?

Waterhouse-Friderichsen syndrome Signup and view all the answers

What selective medium can be used to culture N. meningitidis?

Modified Thayer-Martin or Martin-Lewis medium Signup and view all the answers

Which carbohydrates will N. meningitidis utilize in the CHO utilization reactions?

Glucose and maltose Signup and view all the answers

What are the colony characteristics of Moraxella catarrhalis when grown on a chocolate agar plate?

Pink coloration, opaque, and smooth Signup and view all the answers

Which test can be performed on any growth resembling N. meningitidis for confirmation of the organism?

Oxidase test Signup and view all the answers

What is the result of DIC in the context of fulminant meningococcemia?

Hemorrhage Signup and view all the answers