Micro Exam 3
Last Modified: 2012-04-02
- Pharyngitis (strep throat); inflammation of the pharynx - not viral pharyngitis
- Scarlet fever - often accompanies pharyngitis and occurs when dead S. pyogenes release toxins into the body; rash begins on chests and spreads
- Rheumatic fever - inflammation that leads to damage of heart valves and muscle tissue
- Glomerulonephritis - inflammation of the glomeruli and nephrons which obstruct blood flow through the kidneys
- Pyoderma - confined, pus-producing lesion that usually occurs on the face, arms, or legs
- Necrotozing fasciitis - toxin production destroys skin, and eventually muscle and fat tissue
- Protein M - interferes with opsonization and lysis of the bacteria
- Hyaluronic acid capsule - camouflages the bacteria
- streptokinases - break down blood clots and allow bacteria to spread through wounds
- streptolysins - lyse red blood cells, white blood cells, and platelets; responsible for hemolysis on blood agar plates
- preventative administration of penicillin at birth
- immunization of woman against group B streptococci to prevent infection in offspring
- oxidase positive = characteristic that distinguishes these pathogens from many other gram-negative pathogens
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