micro chapter 21

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Author:
alicia0309
ID:
275894
Filename:
micro chapter 21
Updated:
2014-06-02 20:32:27
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exam
Folders:
microbiology
Description:
exam 3 chapter 21
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  1. Treponema Pallidum
    • causes Syphilis
    • human is host
    • treat with PCN G
    • STD and Transplacental 
    • gram negative, free living, strict parasite, coiled cell
  2. Treponema Family
    • Gram Negative
    • Thin  regular Coiled cells
    • STRICT PARASITES with complex growth requirements
    • REquires live cells for cultivation
  3. Nonsyphilic Treponematoses
    • Bejel: deforming childhood infection of the mouth, nasal cavity, body and hands
    • Yaws: invasion of cut skin
    • Pinta: superficial lesion that depigments the skin
  4. Tests for Treponema (syphilis)
    • several types of serological testing
    • RPR
    • VDRL
    • FTA-ABS
  5. Leptospira interrorgans
    • Gram Negative
    • tight, regular coils with hook on one or both ends
    • causes leptospirosis, a zoonosis when bacteria is shed in urine
    • infection occurs with contact of contaminated urine
    • Sudden high fever and chills, HA, muscle aches
    • Long Term infection may affect the kidney and liver
  6. Borrelia
    • Gram Negative
    • transmitted by arthropod vector
    • spread by TICKS
    • hermsii - relapsing fever
    • burgdorferi - Lyme Disease
  7. B. hermsil
    • relapsing fever
    • spread by ticks
    • Treat with Tetracycline
  8. B. burgdorferi
    • Lyme Disease
    • Treat with Tetracycline or Amoxicillin
    • spread by tickbites
  9. Vibro
    • comma shaped, single polar flagellum
    • Gram Negative
    • generally causes enteric diseases
  10. Vibrio cholera

            {V. cholera}
    • ingested in food or water
    • releases cholera toxin that causes diarrhea "rice water stool"
    • Rehydrate and treat with Tetracycline
    • gram negative, comma shaped rods with polar flagellum
  11. Vibrio parahaemoyticus
    • gastroenteritis from raw seafood
    • symptom similar to cholera
    • treat by replacing fluid and electrolytes and occasionally antimicrobials
  12. Vibrio vulnificus
    • gram negative, comma shaped enteric disease
    • gastroenteritis from raw oysters
    • can cause serious complications in persons with diabetes or liver disease



  13. Campylobacter
    • slender curved or spiral bacilli, often s shaped or gull winged
    • Polar Flagella
    • common resident of intestinal tract, GU tract and oral cavity or birds and mammals
  14. Campylobacter jejuni


    C. jejuni
    • important cause of bacterial gastroenteritis
    • food or beverages
    • reaches the last segment of the intestine near colon, adhere and burrow thru mucus and multiply
    • CJT (enterotoxin) stimulates a secretory diarrhea
    • TREAT rehydration and electrolyte balance
    • Gram Negative, s shaped/gull winged
  15. Campylobacter fetus


        C. fetus
    opportunistic pathogen that infects debilitated persons or women late in pregnancy

    causes meningitis, pneumonia, septicemia, arthritis in the newborn

    Gram Negative, slender curved or S shaped/gull winged
  16. Helicobactor pylori
    • cause of most ulcers
    • tight spirals with several polar flagellum
    • people with type O blood have higher rate of ulcer
    • Produces Urease which converts urea into Ammonium and
    • bicarbate
    • GRAM NEGATIVE
  17. Rickettsiaceae Family
    • Gram Negative
    • NonMotile, Pleomorphic rods or coccobacili
    • Bacteria enters endothelial cells and causes necrosis of vascular lining
  18. Rickettsiaceae prowazekii
    • carried by lice
    • high fever, chills, HA, rash
    • Brill-Zinser is chronic recurrent form

    Gram Negative
  19. Rickettsiaceae typhi
    • mice/rats
    • happens sporadically in areas of high flea infestation
    • milder symptoms

    Gram Negative
  20. Rickettsiaceae rickettsia
    • Rocky My Spotted Fever
    • most common rickettsiaceae infection in North America
    • Carried by dog and wood ticks
    • Spotted Rash
    • may damage heart and CNS
    • Gram Negative
  21. Coxiella burnetti
    • causes Q-Fever
    • usually inhaled
    • Treat with Tetracycline
    • Vacc Available
  22. Bartonella quintana

    B. quintana
    • Tench Fever
    • Spread by Lice

    samll gram negative, fastidious
  23. Bartonella henselae

    B. henselae
    Cat Scratch

    Gram Negative, fastidious
  24. Chlamdiaceae Family
    • Small Gram Negative
    • Obligate intracellular parasite


  25. Chlamydia trachomatis
    • severe infection attacks mucous membrane, eyes, GU tract and lungs
    • May Cause BLINDNESS
    • can be passed to infant thru birth canal
    • 2nd most prevalent STD
    • Gram Negative, Obligate intracellular Parasite
  26. Chlamydophilla
    • NEW GENUS
    • 2 types: pneumoniae -resp and psittacti -transmitted by bird vector
  27. Mycoplasmas
    • naturally lack cell wall
    • high pleomorphic
    • Mycoplasma pneumonia - resp
    • mycoplasma genitialium - weak STD
  28. L-Forms
    • bacterias that have lost their cell wall
    • may have been due to exposure to drug or enzymes

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