Anaerobes Flashcards
what is an anaerobic bacteria
does not use oxygen to grow
Facultative anaerobe
Can grow in either o2 or non o2 environment
anaerobic infections are typically
polymicrobial
what are bacteroides
bile-resistant, nonspore forming , gram negative rods
bacteroides often implicated in
intra-abdominal infections
what causes intra-abdonminal infections
disruption of the instestinal cell wall
which species is associated with high mortality
B fragilis
Actinomyces is a
areotolerant, gram positive rod
What does actinomyces form
red to purple lump on the face and neck
what happeneds to the abscence of actinomyces
break through the skin and produce sinus tract
is actinomyces infection contagious ?
no
Clostridium tetani produce
neurotxin that spreads via CNS and causes spasms
Clostridium botulinum causes
paralysis due to the prevention of Ach release
where is c. botulinum found
improperly canned food that contain spores
c.perfringens cause
asymtopmatic or food poisoning
infections of sound tissues can lead to
gas gangrene
vaccine for which bacteria
C.tetani
Bartonella is
gram negative nonspore forming slow growing rods
bartonella is also
aerobic, motile and intracellular repication
bartonella cant be transmitted via
person to person
B.henselae is transmitted via
cat bite/strach or by the bite of an infected cat flea
B.quintana is also known as
trench fever
how is B.quintana transmitted
by poop
in immunocomp people both Bh and Bq cause
bacillary angiomastosis
what is bacillary angiomastosis
proliferation of blood vessels causing tumor like masses in skin and other organs
is there a vaccine for Bartonella
no
how is b.bacilliformis transmitted
bite of a female sand fly
what is stage one of bartonellosis
acute oroya fever
invades RBC causing hemolytic anemia
invades vascular endothelial cells causing occlusion and thrombosis
what is stage two of bartonellosis
warts
vascular skin lesion that last up to a year
