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Bacteriology > Lab 3- Streptococcus > Flashcards

Lab 3- Streptococcus Flashcards

1
Q

Habitat

A

Skin, mucous membranes, food, milk, digestive tract

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2
Q

Morphology

A

Coccus, chain

Capsule: hyaluridic acid, polysaccharide (some species)

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3
Q

Staining

A

Gram positive

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4
Q

Culture

A

Fastidious: blood agar, serum agar
Selective: crystal violet, thallium-SO4, esculin, blood

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5
Q

Hemolysis

A

Alpha hemolysis
Beta hemolysis
No hemolysis

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6
Q

Biochem

A

Catalase -
Oxidase -
Fermentative

Utilization of glycosides:
Esculin, salicin

Extracellular enzymes:
Fibrinolysin 
Hyaluronidase 
Nucleases 
Proteases

Toxins

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7
Q

Antigens

A

Complex

Lancefield A-W
Other type specific antigens 
Capsule antigens (s. Suis, s.pneumoniae)
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8
Q

Resistance

A

Good

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9
Q

Pathogenicity

A 
Local suppuration
Metritis, mastitis, arthritis 
Septicaemia 
Strangles 
Pneumonia diseases
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10
Q

Grouping

A

Hemolysis
Biochem characters
Antigens

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11
Q

Species

A 
S. Pyogenes
S. Agalactiae
S. Dysgalactiae
S. Uberis 
S. Dysgalactiae subspecies equisimilis
S. Equi subspecies equi 
S. Equi subspecies zooepidemicus 
S. Suis
S. Porcinus
S. Canis
S. Bovis
S. Salvarius 
S. Sanguis
S. Mutant
S. Pneumoniae
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12
Q

Enterococcus culture

A

10-45 degrees
Ph 9,6
Lancefield D

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13
Q

Enterococcus species

A

E. Faecalis
E. Faecium
E. Avium
E. Gallinarum

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14
Q

Enterococcus habitat

A

Gut, mainly saprophytes

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15
Q

Enterococcus causes?

A

Sometimes endocarditis and abscesses

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16
Q

Lactococcus

A 
Lancefield N
Fast lactose fermenters (homofermenters)
Gut flora (probiotic)
Dairy products (starter cultures: Bulgarian milk, butter)
Species:
L. Lactis subspecies lactis 
L. Lactis subspecies cremoris 
L. Plantarum: silage
17
Q

Anaerobic cocci

Habitat?

A

Mucous membranes

Saprophytes, sporadically inflammation

18
Q

Anaerobic cocci species ?

A

Peptococcus: metritis, arthritis, pneumonia
Peptostreptococcus : metritis, arthritis, pneumonia
Peptoniphilus: arthritis, septicaemia
Ruminococcus: saprophytes
Sarcina: saprophytes

19
Q

Lactobacillus

Habitat?

A

Mucous membranes, gut, food, feed. Plant

20
Q

Lactobacillus morphology ?

A

Long, thin, sometimes curved rods

21
Q

Lactobacillus staining ?

A

Gram positive

22
Q

Lactobacillus culture ?

A

Microaerophilic
Optimal temp 30-40 degrees (2-53 degrees)
Ph: 5.5-6.2

23
Q

Lactobacillus biochem

A

Active fermentation
Lactate ph 4.0
Silage

24
Q

Lactobacillus pathogenicity?

A 
Saprophytes 
Mucous membranes (probiotic)
Dairy industry
25
Q

S. Pyogenes cause ?

A

Has capsule
Toxin
Human: scarlet fever, rheumatic fever, glomerulonephritis

26
Q

S. Agalactiae, s. Dysgalactiae and s. Uberis cause?

A

Affect cow and ruminants

Mastitis

27
Q

S. Dysgalactiae subspecies equisimilis cause?

A

Lymphadenitis and abortion (horse)

28
Q

S. Equi subspecies equi cause?

A

Horse strangles

29
Q

S. Equi subspecies zooepidemicus cause?

A

Suppuration, septicaemia, mastitis and abortion

30
Q

S. Suis cause?

A

Septicaemia, arthritis and meningitis

31
Q

S. Porcinus cause?

A

Lymphadenitis, abscesses

32
Q

S. Canis cause?

A

Metritis, neonatal septicaemia

33
Q

S. Bovis cause?

A

Septicaemia (pigeon)

34
Q

S. Salivarius, s. Sanguis, s. Mutans cause?

A

Oral streptococci

35
Q

S. Pneumoniae cause?

A

Affect calf, foal, human

Pneumonia, meningitis

Bacteriology (81 decks)

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