J 2006

Exoproducts of the strain Escherichia coli H22 inhibiting some enteric pathogens both in vitro and in vivo.

CURSINO, L., David ŠMAJS, Jan ŠMARDA, R.M.D. NARDI, J.R. NICOLI et. al.

Basic information

Original name

Exoproducts of the strain Escherichia coli H22 inhibiting some enteric pathogens both in vitro and in vivo.

Name in Czech

Exoprodukty kmene Escherichia coli H22 inhibující některé enterální patogeny

Authors

CURSINO, L. (76 Brazil), David ŠMAJS (203 Czech Republic, guarantor), Jan ŠMARDA (203 Czech Republic), R.M.D. NARDI (76 Brazil), J.R. NICOLI (76 Brazil), E. CHARTONE-SOUZA (76 Brazil) and A.M.A. NASCIMENTO (76 Brazil)

Edition

Journal of Applied Microbiology, Oxford, UK, Blackwell Science Ltd, 2006, 1364-5072

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.206

RIV identification code

RIV/00216224:14110/06:00016056

Organization unit

Faculty of Medicine

UT WoS

000236024400023

Keywords in English

bacteriophage; col-plasmid; colicin; Escherichia coli; growth inhibition; microcin

Tags

International impact, Reviewed
Změněno: 25/6/2009 15:47, prof. MUDr. David Šmajs, Ph.D.

Abstract

V originále

AIMS: The antagonistic activity of the Escherichia coli strain H22 against enteric bacteria was studied both in vitro and in vivo. METHODS AND RESULTS: In vitro, bacterial strains belonging to seven of nine genera of the family Enterobacteriaceae (Enterobacter, Escherichia, Klebsiella, Morganella, Salmonella, Shigella and Yersinia) were inhibited by the strain H22. Six days after simultaneous oral inoculation in germ-free mice, E. coli strain H22 reduced the faecal population of Shigella flexneri 4 to undetectable levels (P < 0.05). In ex vivo assay, inhibitory zones against Sh. flexneri 4 were observed around faecal samples from mice inoculated with E. coli strain H22. The in vitro inhibition of Sh. flexneri 4 was shown to be mediated by microcin C7. In addition to microcin C7, strain H22 was shown to produce aerobactin, new variants of colicins E1 and Ib, and bacteriophage particles with morphology similar to the phages of the family Myoviridae. CONCLUSIONS: Altogether, the properties of E. coli H22, observed both under in vitro and in vivo conditions, suggest its potential use as a probiotic strain for livestock and humans. SIGNIFICANCE AND IMPACT OF THE STUDY: The strain H22 was shown to produce several antimicrobial compounds with inhibitory capabilities against pathogenic or potentially pathogenic enterobacteria.

In Czech

Jsou popsány a blíže studovány exoprodukty kmene Escherichia coli H22 inhibující některé enterální patogeny z celedi Enterobacteriaceae. Zejména jde o koliciny, o bakteriofágy, o korpuskulární koliciny a o siderofory.

Links

GA310/03/1091, research and development project
Name: Mapování interakce kolicinů s citlivou a imunní bakteriální buňkou: receptorové studie a inaktivace kolicinu jeho imunitním proteinem
Investor: Czech Science Foundation
MSM0021622415, plan (intention)
Name: Molekulární podstata buněčných a tkáňových regulací
Investor: Ministry of Education, Youth and Sports of the CR, Molecular basis of cell and tissue regulations