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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
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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).
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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
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WHAT AND HOW ARE MICROORGANISMS ARE the Hemolytic classification? (you should know what the classification systems use to divide the organisims).
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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
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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
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WHAT ARE THE MOST SERIOUS STREP PATHOGEN, IS A BETA HEMOLYTIC, STRICT PARASITE AND NUMEROUS VIRULENCE FACTORS?
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Streptococcus pyogenes
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STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT ARE SOME OF THE ELEVEN VIRULENCE FACTORS OF STREPTOCOCCUS PYOGENES?
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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
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WHAT ARE THE Epidemiology and Pathogenesis OF STREPTOCOCCUS PYOGENES?
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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
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WHAT ARE THE PATTERNS OF INFECTION FOR STREPTOCOCCUS PYOGENES?
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e. Disease
i. Localized 1. Throat infections a. Strep throat 2. Cutaneous infections a. Eysipelas b. Impetigo |
STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT ARE THE TREATMENTS FOR INFECTION FOR STREPTOCOCCUS PYOGENES?
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f. Treatment
i. Penicillin ii. Increasing drug resistance iii. Two vaccines for high risk persons |
STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT ARE THE VIRIDANS GROUP OF STREPTOCOCCUS? NAME FOUR.
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Viridans Group
a. Meningitis, bacteremia, tooth abscesses b. Subacute endocarditis |
STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT IS TYPE OF PNEUMONIA IS STREPTOCOCCI PNEUMONIA? WHAT DOES IT CAUSE?
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1-IS MOST TYPES OF BACTERIAL PNEUMONIA
2-CAUSES PNEUMONIA |
STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT ARE THE FIRST TWO BRANCHES OF THE LANCEFIELD CLASSIFICATION SYSTEM?
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STEPTOCOCCUS SPECIES BRANCHES TO 2 BRANCHES BETA-HEMOLYTIC --ALPHA-HEMOLYTIC
THEN BRANCHES FROM THERE |
STREPTOCOCCI- GRAM POSITIVE COCCI
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WHAT ARE THE TWO BRANCHES OF THE BETA HEMOLYTIC AND IDENTIFIERS?
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BETA-HEMOLYTIC BRANCHES TO
BACITRACIN SENSITIVE GRP-A STEPOCOCCI (STEPTOCOCCUS PYOGENES.) & BACITRACIN-RESISTANT GRP B&C STRPTOCOCCI--- |
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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 |
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