Ch 3 Flashcards
(22 cards)
Vancomycin-resistant is
E. gallinarum, E. casseliflavus
Enterococcus Inherent resistance to many antibiotics like
cephalosporins,
oxacillin
Enterococcus Acquired resistance to
vancomycin, aminoglycosides
يجارب الجسم بكتيريا Enterococcus ب ؟
neutrophils & opsonization
Normal flora of human intestines & genitourinary tract like
▪ E. faecalis (high concentrations in intestines).
▪ E. faecium (lower concentrations)
Most common enterococcal infection is
Urinary Tract Infections
Urinary Tract Infections Associated with ?
catheterization
Peritoneal Infections is
Polymicrobial infections due to intestinal leakage
Bacteremia & Endocarditis
Is Serious bloodstream infections, often from
UTIs, wounds, or
peritonitis
Endocarditis is difficult to treat due to
antibiotic resistance.
من خصائص ال Enterococcus
Optochin-resistant
Bile insoluble.
PYR test positive
High vancomycin & ampicillin resistance is
E. faecium
Ampicillin-sensitive, vancomycin-resistant strains emerging is
E. faecalis
Aminoglycoside + β-lactam =
ampicillin
Newer antibiotics to treat Enterococcus like
Linezolid, daptomycin, tigecycline
the major virulence factor is
Polysaccharide capsule
كيف ال Streptococcus pneumoniae بتمنع جهاز المناعة ان يتخلص منها ؟
Secretory IgA protease – Degrades IgA.
Pneumolysin
تعمل ال Pneumolysin على ؟
Forms pores in host cell membranes, killing ciliated
epithelial cells, inhibits leukocyte respiratory burst and inhibits
classical complement fixation
is most
effective at shielding the probable causative agent of this child’s infection from phagocytosis and
ensuring serological specificity?
M protein
