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Ch. 20: Gram Negative Cocci + Bacilli
Terms in this set (20)
What are some consequences of Lipid A?
DIC - Disseminated intravascular coagulation
Where are Enterobacteriaceae commonly found?
What three infections did we discuss related to Escheria coli?
Urinary Tract Infection
Disease description: burning while urinating, feel need to pee
Transmission: direct contact with fecal matter
VF: Fimbriae - attach to urethral tissue
Disease description: run of the mill food poisoning, watery diarrhea, cramps, vomitting
Transmission: contaminated food, generally animal feces, raw milk and ground beef are common
VF: Enterotoxins lead to symptoms
Treatment: Self-limiting, hydration
inflammation of the colon resulting in hemorrhaging, bloody diarrhea, abdominal pain
Hemolytic Uremic Syndrome
Premature destruction of RBC's overwhelms kidneys - lead to kidney failure
Transmission: contaminated food with this particular strain of E. coli
VF: Shiga-like toxins, Type III Secretion System
Treatment: Supportive care, DIC can occur if treated with aX. Blood transfusion, dialysis
Type III Secretion System
Collection of proteins attach to target cell and act like hypodermic needle so bacteria can inject itself into cell
Often found in animal feces
Normal microbiota for chicken, pathogenic for humans
What two infections did we discuss related to Salmonella?
What strain of Salmonella causes food poisoning?
Disease description: Salmonellosis, diarrhea, nausea, vomiting, fever, cramps
Transmission: contaminated food, ingestion, commonly poultry
VF: Type III secretion system, many cells burst and you get diarrhea
How many bacteria do you have to ingest to get sick?
More than 1 million
What strain of Salmonella causes Typhoid Fever?
Disease description: moves from intestines (gallbladder) to blood to spleen
Recurring fevers, headache, muscle pain, loss of appetite
Transmission: fecal-oral, food or water
Treatment: Antibiotics, gallbladder removal
Vaccine: injection 2-3 years
Bacteria from the Neisseria family
What is the shape of Neisseria gonorrhoeae?
What disease does this bacteria cause?
Disease description: more common in women and tend to be asymptomatic
For me, painful urination and pus from urethra. Can progress to the testes or vas deferens resulting in sterility
VF: Fimbriae, enzyme, capsule
What is the function of the VF enzyme in gonorrhea?
It breaks down IgA in mucus (antibodies that live here)
What is the function of the VF capsule in gonorrhea?
Protect bacteria inside phagocyte
Resists lysis and multiply
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