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Microbiology Module 1 '15 - '16 > Neisseria and Moraxella Catarrhalis > Flashcards

Neisseria and Moraxella Catarrhalis Flashcards

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Biology 101 flashcards
1
Q

What are the characteristics and gram of Neisseria?

A

GNC(usually in pairs), aerobic, oxidase and catalase positive

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2
Q

What are the characteristics and gram of Moraxella catarrhalis?

A

GNC(other Moraxella are rod shaped), graywhite colonies, “hockeypuck” colonies

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3
Q

Where is Neisseria found?

A

Mucus membranes of man, normal oroparyngeal flora

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4
Q

Where is Moraxella found?

A

normal oroparyngeal flora

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5
Q

What are the growth requirements for pathogenic species?

A

fastidious

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6
Q

What is the purpose of the candle jar

A

CO2 environment

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7
Q

What is positive catarrhalis disk?

A

green

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8
Q

What is ONPG testing for?

A

late utilization of glucose

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9
Q

What are the 4 carbohydrates?

A

Glucose (dextrose), maltose, lactose and sucrose

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10
Q

What is superoxol?

A

Same as catalase just use 30% instead of 3% H2O2

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11
Q

G+, M-, L-, S-; What is this bacteria?

A

N. gonorrhoeae

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12
Q

G+, M+, L-, S-; What is this bacteria?

A

N. meingitidis

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13
Q

G+, M+, L+, S-; What is this bacteria?

A

N. lactamica

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14
Q

G-, M-, L-, S-; What is this bacteria?

A

N. catarrhalis

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15
Q

What are the pathogenic (group I) species?

A

N. gonorrhoeae and N. meningitidis

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16
Q

What are the non-pathogenic species?

A

N. lacamica, M. catarrhalis, N. cinerea, N. mucosa, N.

sicca, N. subflava, N. flavescens, M. catarrhalis and others

17
Q

What media will pathogenic species grow on?

A

Selective

18
Q

What media will non-pathogenic species grow on?

A

not selective but some can

19
Q

Who is GNID on and why not both sexes?

A

Males it is diagnostic, females cant have it due to normal flora

20
Q

What does bacteria in joint fluid mean?

A

significant, should be sterile

21
Q

What is CSF cultured on?

A

Chocolate

22
Q

What are disease associated caused with N. gonorrhoeae?

A

gonorrhea,eye infections, septicemia, pharyngitis, arthritis

23
Q

What are disease associated caused with N. meningitides?

A

maybe normal respiratory flora, meningitis,

septicemia, DIC, Waterhouse Friderichsen syndrome

24
Q

How is N. gonorrhoeae diagnosis made?

A

Positive GNID

25
Q

What is the proper specimen collention and transport for gonorrhea?

A

Dacron or rayon swabs, urethra in males and endocervix in females

26
Q

Resistance and treatment trends with N. gonorrhoeae

A

Widespread, multidrug therapy, also treat co-infection with Chlamydia

27
Q

What are the advantages and disadvantages of conventional and molecular testing for N. gonorrhoeae?

A

Advan-rapid, perform on clinical specimen, live organisms not required, chlamydia and tricomanas tested at same time. DISADVAN- not admissible in court, no live organism for susceptibility, expensive

28
Q

How do most individuals become infected with N. meningitides?

A

Close contact (young adults) dorms, barracks

29
Q

What are the distinguishing characteristics of waterhouse-friderichsen syndrome?

A

hemorrhage into adrenal glands, shock, rapid death

30
Q

Why is it critical to work under a hood with N, menigitidis and not N. gonorrhoeae?

A

pilli, Gonorrhoeae loses them and can not infect, Menigitidis can

31
Q

What is the recommended treatment for at risk N. meningitis people?

A

Rifampin

32
Q

Why are those in the US not fully protected against N. meningitids?

A

type B vaccine just became avaliable

33
Q

Gray white colonies, hockey puck, rowth on SBA and CHOC, no acid production from carbs, DNase +, butyrase esterase +

A

Moraxella catarrhalis

34
Q

What organism is misidentifies as N. gonorrhoeae using carbs?

A

N. cinerae

35
Q

Compare and contrast N. cinerae and N. gonorrhoeae

A

Look similar, N. cinerae is not pathogenic

36
Q

What are characteristics of less common Neisseria?

A

Yellow/greenish, dry and wrinkled colonies, N. sicca is G+, M+, L-, S+

Microbiology Module 1 '15 - '16 (9 decks)

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