GROUP A STREP STREP STREP PYOGENES Flashcards
is the group A strep encapsulated or not
it is capsulated
the capsule of the group A strep is made of ?
hyaluronic acid
where is the hyaluronic acid is exists naturally
it is produced by the connective tissues
what does the group A sterp as properties in the lap
it is beta hemolytic
what are the symptoms
1- impetigo قوباء
2-sterp throat
3- erysipelas
what are the issues of the toxins of the pyrogenes
1- scarlett fever
2- toxic shock like syndrome
3-necrotizing fascities
what are the symptoms of scarlett fever
strawberry tongue
rash all over the body spares the head
phyaryngitis
what is the cause of the toxic like syndrome and which species do it
it is superantigene and the species which cause it are A and C
which species cause the necrotizing fascities
it is B
what is the main virulence factor for the rueumatic faver
it is protein M
what are the symptoms of the rheumatic faver
1- antiphagocytic action
2- heart damage specially the mitral valve
3- pharyngities
4- joints
5- nodules on the surface
-erythema marginatum طفح جلدي مميز ب دوائر زهيرية و بياض جوا الدوائر
6- sydenham’s chorea
what is the post strep glomerulonephritis
it is a type 3 hypersensivity that post the infection with strep
what are the symptoms of glomerulonephritis
1- puffy cheeks
2- kola like urine
3- it happens after two weeks from the infection
what is the TXT for glomerulonephritis
penicillin
what are the virulence factors of strep group
M protein
strepkinase allow it to convert plasminogen to plasmin
sterptolysin O
DNA ases
