special growth requiremnts Flashcards
what are the 2 main methods of energy production in bacteria ?
respiration - aerobic
fermentation - anaerobic
what are the enzymes necessary for aerobic respiration and what are their functions ?
superoxide dismutase - o2- to o2
catalase - h2o2 to H2O and O2
what are obligate anaerobes ?
must have an oxygen system in order to survive
what are examples of obligate anaerobes ?
cant breathe fresh air
clostridium
bacteriodes
fusobacterium
actinomyces
what are obligate anaerobes ?
dont have superoxide dismutase or catalase
where are obligate anaerobes mostly found ?
the GI flora and in the mouth
when do obligate anaerobes cause infection ?
when there is a break down off the surface and s often present in abscesses
dont cause communicable diseases
which antibiotic s found ineffective with obligate anaerobes ?
amino glycosides
why is there a foul smell in association with anaerobes ?
due too thee by products of fermentation
co2 and h2
what disease is associated with recurrent infections with catalase positive organisms ?
chronic granulomatous disease
NADPH oxidase deficiency
what are the catalase positive organisms ?
catalase positive no big bubbles HASSLE
candida
pseudomonas
nocardia
bordatella
burkh
h pylori
aspergillus
staph
serratia
listeria
e coli
what are examples of anaerobes ?
cant breathe fresh air
clostridium
bacteriodes
fusobacterium
actinomycen
what are thee key anaerobic infections and what are the associated bugs ?
abdominal abscess - gram negative flora , bacteriocides diverticulitis
appendicitis
aspiration pneumonia - peptostreptococcus
what is the treatment for anaerobic infections above the diaphragm vs under the diaphragm ?
above - clindamycin
below - metronidazole
what are the obligate intracellular bacteria ?
really chilly and cold
rickettsia
chlamydia
coxiella
