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Gram negative cocci & coccobacilli
Metabolic, sensitivity, and disease features of gram negative cocci
8
Microbiology
Professional
09/17/2011

Additional Microbiology Flashcards

 


 

Cards

Term

Neisseria gonorrhoeae

-Respiration

-capsule

-nitrate

-catalase

-oxidase

-DNase

-colistin

-fermentation

-virulence factors

-diseases

-notes

Definition

Respiration: aerobe

Capsule:

Nitrate: yes

catalase: yes

oxidase: yes

DNase: no

colistin: resistant

fermentation: glucose

virulence factors:

- lipooligosaccharide

- pili

- por, opa, rmp protein

Diseases:

-gonorrhea

-ophthalmia

-neonatorium

Notes:

-Truncated O-side chain

-grows on Thayer-Martin VCN media

Term

Neisseria meningitidis

-Respiration

-capsule

-nitrate

-catalase

-oxidase

-DNase

-colistin

-fermentation

-virulence factors

-diseases

-notes

Definition

Respiration: aerobe

Capsule: yes

Nitrate: yes

Catalase: yes

Oxidase: yes

DNase: no

Colistin: resistant

Fermentation: maltose & glucose

Virulence factors

- outer membrane blebs w/ endotoxins

- pili

- capsule

- IgA1 protease

- LOS

- meningobactin

Diseases:

- meningitis

Notes:

- no exotoxins

- vaccine does not cover serotype B

- grows on Thayer-Martin VCN media

Term

Moraxella catarrhalis

-Catalase

-Oxidase

-DNase

-colistin

-fermentation

-diseases

-notes

Definition

Catalase: yes

Oxidase: yes

DNase: yes

Colistin: sensitive

Fermentation: none

Diseases:

- Upper and lower respiratory tract infections

- frequent cause of sinusitis

Notes:

- cocci or coccobacilli

Term

Kingella kingae

-catalase

-oxidase

-DNase

-colistin

-fermentation

-diseases

-notes

Definition

Catalase: no

Oxidase: yes

DNase: yes

Colistin: sensitive

Fermentation: glucose

Diseases:

-rare cause of disease, if it does it is a rare cause of bone, joint disease as well as endocarditis

Term

Acinetobacter baumanii

-catalase

-oxidase

-DNase

-colistin

-fermentation

-diseases

-notes

Definition

Catalase: yes

Oxidase: no

DNase: no

Colistin: sensitive

Fermentation: none

Diseases:

- nosocomial pneumonia

Notes:

- coccobacilli resistant to many antibiotics

Term

Bordatella pertusis

-capsule

-oxidase

-virulence factors

-diseases

-notes

Definition

Capsule: yes

Oxidase: yes

Virulence factors:

- pertusis toxin

- adenyl cyclase toxin

- tracheal cytotoxin

Diseases:

- pertusis

Notes:

-pearl-like colonies on Bordet-Gengou agar

Term

Haemophilus influenzae

-capsule

-virulence factors

-diseases

-notes

Definition

Capsule: 6 capsuled types; normal flora have no capsule

Virulence factors:

- anti-phagocytic capsule

- endotoxin

Diseases:

- community acquired pneumonia

Notes:

- Capsulated forms have serotypes A-F w/ serotype B most virulent

- grows on chocolate agar

Term

Legionella pneumophila

-Virulence factors

-diseases

-notes

Definition

Virulence factors:

- intracellular interference of phagolysosome fusion

- resistance to peroxide and ROSs

-enzymes kill infected cells → release of inflammatory cytokines

Diseases:

- pneumonia

Notes:

- water-borne (cooling towers, shower heads)

-poorly stained on Gram stain

- think this bacteria with patient with severe pneumonia with sputum sample showing PMNs with no bacteria

- charcoal yeast extract agar 

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