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13 Cards in this Set

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WHAT AND HOW ARE MICROORGANISMS ARE Classified by the Lancefield classification system ? (you should know what the classification systems use to divide the organisims).
REBECCA LANCEFIELD (1930'S) DEV. SYSTEM TO CLASSIFY THE SPECIES OF STREPTOCOCCUS
*****A SEROLOGIC CLASSIFICATION OF STREPTOCOCCI BASED ON ANTIGENIC CHARACTERISTICS BASED ON THE CELL WALL.

1-DISCOVER CELL WALL C-CARBOHYDRATES SPECIALIZED POLYSACCHARIDES (ANTIGENS)
2VARIOUS CULTURES STIMULATE FORMATION OF ANTIBODIES W/ DIFFERENT SPECIFICITIES & W/ 17 DIFFERENT GRPS USING AN ALPHABETIC SYSTEM (ABC).
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT AND HOW ARE MICROORGANISMS ARE the Hemolytic classification? (you should know what the classification systems use to divide the organisims).
1. BETA-HEMOLYTIC BRANCHES TO
BACITRACIN SENSITIVE GRP-A STEPOCOCCI (STEPTOCOCCUS PYOGENES.) W/BACITRACIN- RESISTANT GRP B&C STRPTOCOCCI
2. ALPHA-HEMOLYTIC BRANCHES TO OPTOCHIN- SENSITIVE TO STREPTOCOCCUS.PNEUMONIA
W/OPTOCHIN-RESISTANT GRP D AND VIRIDANS STREPTOCOCCI DEFINED BY BETA, ALPHA, NONE OR VARIES
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT GRAM POSITIVE COCCI HAVE THE FOLLOWING TRAITS:
Gram Positive cocci species arranged in long chains
Lacks spores and Motility
Humans are the only reservoir
Throat, Nasopharynx and skin
STREPTOCOCCI SUCH AS

Streptococcus pyogenes
Streptococcus agalactiae
Streptococcus pneumonia
Enterococcus faecalis
Viridans streptococci
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE MOST SERIOUS STREP PATHOGEN, IS A BETA HEMOLYTIC, STRICT PARASITE AND NUMEROUS VIRULENCE FACTORS?
Streptococcus pyogenes
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE SOME OF THE ELEVEN VIRULENCE FACTORS OF STREPTOCOCCUS PYOGENES?
i. C-Carbohydrates
ii. Fimbriae
iii. M-protein
iv. Capsule
v. Protease
vi. Streptokinase
vii. DNase
viii. Hyaluronidase
ix. Streptolysins
x. Erythogenic toxin (pyrogenic)
xi. Superantigens
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE Epidemiology and Pathogenesis OF STREPTOCOCCUS PYOGENES?
i. Found on surfaces
ii. Children predominant group
iii. Spread by contact, droplets, food and fomites
iv. Serious if not treated
1. Rheumatic fever
2. Acute glomerulonephritis
3. Necrotizing fasciitis
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE PATTERNS OF INFECTION FOR STREPTOCOCCUS PYOGENES?
e. Disease
i. Localized
1. Throat infections
a. Strep throat
2. Cutaneous infections
a. Eysipelas
b. Impetigo
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE TREATMENTS FOR INFECTION FOR STREPTOCOCCUS PYOGENES?
f. Treatment
i. Penicillin
ii. Increasing drug resistance
iii. Two vaccines for high risk persons
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE VIRIDANS GROUP OF STREPTOCOCCUS? NAME FOUR.
Viridans Group
a. Meningitis, bacteremia, tooth abscesses
b. Subacute endocarditis
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT IS TYPE OF PNEUMONIA IS STREPTOCOCCI PNEUMONIA? WHAT DOES IT CAUSE?
1-IS MOST TYPES OF BACTERIAL PNEUMONIA

2-CAUSES PNEUMONIA
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE FIRST TWO BRANCHES OF THE LANCEFIELD CLASSIFICATION SYSTEM?
STEPTOCOCCUS SPECIES BRANCHES TO 2 BRANCHES BETA-HEMOLYTIC --ALPHA-HEMOLYTIC
THEN BRANCHES FROM THERE
STREPTOCOCCI- GRAM POSITIVE COCCI
WHAT ARE THE TWO BRANCHES OF THE BETA HEMOLYTIC AND IDENTIFIERS?
BETA-HEMOLYTIC BRANCHES TO
BACITRACIN SENSITIVE GRP-A STEPOCOCCI (STEPTOCOCCUS PYOGENES.)
&
BACITRACIN-RESISTANT GRP B&C STRPTOCOCCI---
WHAT IS KEY TO HEMOLYTIC CLASSIFICATION?


MAY NOT NEED TO KNOW THIS *********************************WHAT ARE THE TWO BRANCHES OF THE ALPHA HEMOLYTIC AND IDENTIFIERS?
LYSE OF RED BLOOD CELLS

MAY NOT NEED TO KNOW********ALPHA-HEMOLYTIC BRANCHES TO OPTOCHIN-SENSITIVE TO STREPTOCOCCUS.PNEUMONIA &
OPTOCHIN-RESISTANT GRP D AND VIRIDANS STREPTOCOCCI DEFINED BY BETA, ALPHA, NONE OR VARIES