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Titolo:
Epidemiology and risk factors.
Autore:
Sedallian, A; Bland, S;
Indirizzi:
Ctr Hosp Annecy, Federat Microbiol Clin & Infectiol, F-74011 Annecy, France Ctr Hosp Annecy Annecy France F-74011 Infectiol, F-74011 Annecy, France
Titolo Testata:
MEDECINE ET MALADIES INFECTIEUSES
, volume: 30, anno: 2000, supplemento:, 2
pagine: 85S - 90S
SICI:
0399-077X(200003)30:<85S:EARF>2.0.ZU;2-G
Fonte:
ISI
Lingua:
FRE
Soggetto:
BACTEROIDES-FRAGILIS; PEPTOSTREPTOCOCCUS-MAGNUS; GINGIVALIS; PORPHYROMONAS;
Keywords:
virulence factors of anaerobes; normal flora; anaerobic infections;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Sedallian, A Ctr Hosp Annecy, Federat Microbiol Clin & Infectiol, 1 Ave Tresum, F-74011Annecy, France Ctr Hosp Annecy 1 Ave Tresum Annecy France F-74011 y, France
Citazione:
A. Sedallian e S. Bland, "Epidemiology and risk factors.", MED MAL INF, 30, 2000, pp. 85S-90S

Abstract

The skin and mucous membranes are colonized by microorganisms which are referred to as the normal or indigenous flora. The inhabited surfaces of the human body include skin, mouth, throat, lower intestinal tract and vagina. Microorganisms colonizing these region are present in appreciable numbers and they are largely anaerobes. Under usual circumstances, these organisms are not pathogenic. Anaerobic infections arise after disruption of an anatomic barrier; with the invasion of local flora into a previously sterile site; in cases where host defenses are impaired, flora components are capable of producing serious disease. The infection is generally a mixed infection of aerobic and anaerobic bacteria, but the number of anaerobes is greater than the number of aerobic or facultative organims. While the normal flora iscomposed of several hundred anaerobic bacteria species, a few of these species are routinely found in clinical specimens. The anaerobic species whichpredominate in clinical infections are Bacteroides fragilis, pigmented Prevotella, Porphyromonas, Fusobacterium or Peptostreptococcus species. These bacteria have one or more virulence factor properties which contribute to virulence. (C) 2000 Editions scientifiques et medicales Elsevier SAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/06/20 alle ore 01:22:40