Term
|
Definition
Gram (+) cocci
Genus: Staphylococcus, Streptococcus |
|
|
Term
|
Definition
ARRANGEMENT: Staphylo
DIAGNOSTIC TESTS:Catalase (+)
MSA: Growth (+)
HARDINESS: Very hardy outside of host
CAPSULE? Yes
DRUG RESISTANT? Extremely Resistant
HEMOLYSIS? (+) |
|
|
Term
|
Definition
ARRANGEMENT: Varies
DIAGNOSTIC TESTS:Catalase (-)
MSA: Growth (-)
HARDINESS: Delicate
CAPSULE? Only SOME species
DRUG RESISTANT? Depends on species
HEMOLYSIS? Varies by species |
|
|
Term
|
Definition
| Exotoxins that lyse host cells, including Red Blood Cells. (A group of pore forming toxins secreted by β-hemolytic pathogenia Streptococcus & Staphylococcus) |
|
|
Term
|
Definition
| The lysing of Red Blood Cells. Hemolysins are exotoxins that lyse host cells, including Red Blood Cells. |
|
|
Term
|
Definition
| Individual sub units of the hemolysin have a hook and stabilizer portion. The hook (slender part) can wiggle into the membrane of the host cell. Other subunits then follow inthe same way. When all seven of the subunits are wedged into the host cells' plasma membrane, they aggregate into a nonselective pore. |
|
|
Term
|
Definition
In Vitro (petri dish/test tube) Hemolysins lyse Red Blood Cells.
In Vivo (in the body) Hemolysins have an array of targets including the following:
Red Blood Cells & Muscle fibers.
These harvest Fe2+(iron) |
|
|
Term
|
Definition
RESERVOIR:Nasal cavity of 20-50% humans (usually carried transiently)
DIAGNOSTIC TESTS: 1)MSA - mannitol salt agar
2) Coagulase - S. aureus-->(Virulent forms) are Gram (+)
S.epidermis --> is Gram (-)
VIRULENCE FACTORS:Over 40 known for S. aureus (coagulase & staphylokinase, Hemolysins, Digestive enzymes, exfolative Toxin, toxic shock toxin,
|
|
|
Term
|
Definition
Streptococcus pyrogenes
Group B strep
β - Beta hemolysis pattern =
"complete clearing due to lysis of Red Blood Cell
|
|
|
Term
|
Definition
α - Alpha hemolysis =
"partial" clearing =
hemoglobin changes to yellow/green
|
|
|
Term
|
Definition
γ - Gamma hemolysis =
NO clearing =
Red Blood Cell is left alone |
|
|
