Chapter 25: Microbial Diseases of the Digestive System Flashcards

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1
Q

plaque is caused by which bacteria

A

s mutans

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2
Q

Gingivitis is caused by which bacterias

A
  • s mutans
  • bacteriodetes
  • fusobacterium
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3
Q

Peritonitis

A

bactereiodetes: pus
- caused by: porphysomanas gingivitis

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4
Q

what are the 5 stages of tooth decay

A
  1. healthy tooth with plaque
  2. decay in enamel
  3. advanced decay
  4. decay in dentin
  5. decay in pulp
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5
Q

what are the 4 stages of periodontal disease

A
  1. healthy gingivae
  2. gingitivitis
  3. periodontal pockets
  4. periodontitis
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6
Q

infection

A

long incubation period

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7
Q

intoxication

A
  • food with mulitplied bacteria
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8
Q

example of intoxification

A

straphylococcus

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9
Q

whata are the symptoms of gastroenteritis

A
  • nausea
  • vomiting
  • diarrhea/dysentery/constipation
  • fever?
    -shock?
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10
Q

what is the treatment for gastroenteritis

A

oral rehydration treatment (ORT)
or
antibiotics

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11
Q

Sttaphylococcal aureus

A
  • causes: food poisoning
  • superantigen
  • Symptoms: nausea, vomiting, diarrhea
  • abrupt, violent immediately after eating a meal
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12
Q

s. Dysenteriae

A
  • produces shiga toxin
  • inflammation in the large intestine
  • 20 bowel movements (dehydration)
  • fecal oral route of entry
  • common in daycares
  • treatment: ORT, fluroquinolones
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13
Q

shiga toxin

A

Classic A+B
- inhibits protein synthesis –> absece forms –> scar

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14
Q

s. entrica

A
  • food borne infection (poultry, beef, eggs, vegetables)
  • pets –> can spread
  • treatment: ORT
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15
Q

s. typhi

A
  • spread through human carriers (gallbladder)
  • fecal oral route of entry
  • symptoms: sever diarrhea (short lived), then constipation, severe haemorrhaging, rose spots, extremely high fever
  • treatment: cephlosporins
  • example: typhoid mary
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16
Q

Cholera

A
  • vibrio
  • classic A+B exotoxin (triggers cAMP –>converts cells to pumps)
  • symptoms:rice water stool
  • treatment: ORT, Tetracycline
  • example: Hatti 2010
17
Q

how many strains of e coli is there

A

5

18
Q

what are th 5 strains of E coli

A
  • Enterio-Toxigenic E coli (ETEC)
  • Aggregated (EAEC)
  • EPIC
  • Invasive EIEC
  • hemohegic (EHEC)
19
Q

ETEC

A
  • 65% of traveler diarrhea
20
Q

EAEC

A
  • 35% of travellers diarrhea
  • stacked brick
21
Q

EPIC

A
  • common in bottle fed newborns
  • chronic diarrhea
22
Q

EIEC

A
  • dysentery
  • similar to shiga
23
Q

EHEC

A
  • has become a syndrom
  • HUS
24
Q

Camphylobacter Gastroenteristis

A

Pathogen: camphylobacter jejuni
- symptoms: abdominal pain, diarrhea
- rare: guillina-barre-Syndrom (paralysis)

25
Q

h pylori ulcer

A
  • flangella
  • exotoxin
  • destorys phagocytes
  • Diagnosis: urea breath, bacterial culture
  • symptoms: peptic ulcers (15%), carcinogenic bacterium (3%), extreme belching
  • treatment: metronidoazole
26
Q

what does the exotoxin in h pylori do

A
  • inbitis acid production
  • produces enzyme urease
  • digest urea into amonia
  • changs pH to alkaline
27
Q

c diff

A
  • severe pseudomembranous colitis
  • A+B exotoxin
  • endospores
  • nosocrominal infection
  • Symptoms: diarrhea, life threatening colitis
  • caused by long term antibiotic use
  • Diagnosis: isolate bacteria
  • common in daycare centers
  • Reservoir: stool of many healthy adults
28
Q

Mumps

A
  • vaccine: MMR; no antivirals
  • entry: respiratory tract (paratoid gland)
  • incubation ( 16-18 days)
  • symptoms: fever (chills), difficulty chewing (anorexia), difficulty talking, viremia
29
Q

review herpes chart

A