Difference between revisions of "Category:Campylobacter species"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
| + | {{frontpage | ||
| + | |pagetitle =Campylobacter species | ||
| + | |pagebody = | ||
| + | |contenttitle =Content | ||
| + | |contentbody =<big><b> | ||
| + | <categorytree mode=pages>Campylobacter species</categorytree> | ||
| + | </b></big> | ||
| + | |logo = | ||
| + | }} | ||
| + | |||
===Overview=== | ===Overview=== | ||
| Line 33: | Line 43: | ||
*Flagellae of ''C. jejuni'' required for colonisation | *Flagellae of ''C. jejuni'' required for colonisation | ||
| − | |||
[[Category:Bacteria]][[Category:Gram_negative_bacteria]] | [[Category:Bacteria]][[Category:Gram_negative_bacteria]] | ||
[[Category:Rods]] | [[Category:Rods]] | ||
| + | '''Bold text''' | ||
Revision as of 12:27, 24 May 2010
Campylobacter species
Overview
- Live on mucosa of intestinal and genital tract and can be commensals or pathogens
- Enteric species cause disease in humans
- Other species cause infertility and abortion in cattle and sheep
- Excreted in faeces of birds, (C. jejuni and C. lari) as well as pigs contaminating water and food supplies
- C. fetus restricted to bovine prepucial mucosa
Characteristics
- Curved, Gram negative rods
- Polar flagellum aids motility
- Daughter cells remain joined giving gull-wing or spiral appearance
- Microaerophilic
- Sensitive to drying
- Thermophilic species - C. jejuni, C. coli
- Non-thermophilic species e.g. C. fetus
- Grow on enriched selective media e.g. Skirrow agar in 1-10% carbon dioxide and 5-10% oxygen tension
- C. jejuni requires increased temperatures for growth
- Many grow on MacConkey
- Oxidase positive, non-fermentative
- C. fetus subspecies venerealis and subspecies fetus have small, round, smooth, translucent colonies
- C. jejuni has small, flat, grey colonies with watery appearance
- Smears stained with dilute carbol fuschin for 4 minutes
Pathogenesis and pathogenicity
- C. fetus subspecies fetus and subspecies venerealis possess a microcapsule (S layer) which resists phagocytosis and serum-mediated destruction and enhances survival in the genital tract
- Antigens of S layer undergoes antigenic shifts in C. fetus subspecies venerealis, allowing persistence in the host
- C. jejuni attaches and invades host enterocytes and produces enterotoxin-like substances
- Flagellae of C. jejuni required for colonisation
Bold text
Pages in category "Campylobacter species"
The following 5 pages are in this category, out of 5 total.