Gram- Positive Cocci, Catalase Positive Flashcards
Catalase- producing, gram-positive cocci, non motile, non-spore forming, aerobic, “Bunch of grapes”. Colonies are cream-colored white or rarely light gold, and “buttery looking”
Staphylococcus
Gram positive cocci, catalase positive most clinically significant species of staphylococci
Staphylococcus aureus
Are Heat stable endotoxin that cause various, symptoms, including diarrhea and vomitting
Endotoxin
Cause nearly all cases of menstruating associated toxic shock syndrom
Toxic Shock Syndrom Toxin 1
it is also known as epidermolytic toxin. it causes the epidermal layer of the skin to slough off and is known to cause staphylococcal scalded skin syndrom
Exfoliative toxin
in addition to lysing erythrocytes, it also damage platelets and macrophages and cause severe tissue damage
Alpha hemolysins
Acts on the sphingomyelin in the plasma membrane of erythrocytes
beta hemolysins
causes bacterial cells to agglutinate in plasma
staphylocoagulase
Hydrolyzes hyaluronic acid
Hyaluronidase
Acts on lipids present on the surface of the skin, particularly fats and oil secreted by the sebaceaous glands
Lipases
it has the ability to bind the Fc portion of immunoglobulin igG
protein A
Is a relatively mild inflammation of a hair follicle or oil gland, the infected area is raised and red
Folliculitis
it is an extension of folliculitis, are large, raised, superficial, abscesses
furuncles
Occur when larger, more invasive lesions develop from multiple furuncles
Cabuncles
Causes staphylococcal pustules that are large and surrounded by a small zone of erythema
Bullous impetigo