Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.

ŠMARDA, Jan, David ŠMAJS and Sabina HORYNOVÁ. Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli. Folia Microbiologica. 2006, vol. 51, No 5, p. 387-391. ISSN 0015-5632.

Basic information

• Original name: Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.
• Name in Czech: Incidence lysogenních, kolicinogenních a siderofory-produkujícíh kmenů mezi lidskými kmeny Escherichia coli.
• Name (in English): Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.
• Authors: ŠMARDA, Jan (203 Czech Republic), David ŠMAJS (203 Czech Republic, guarantor) and Sabina HORYNOVÁ (203 Czech Republic).
• Edition: Folia Microbiologica, 2006, 0015-5632.

Other information

• Original language: Czech
• Type of outcome: Article in a journal
• Field of Study: 10600 1.6 Biological sciences
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 0.963
• RIV identification code: RIV/00216224:14110/06:00016077
• Organization unit: Faculty of Medicine
• UT WoS: 000242183400005
• Keywords in English: Escherichia coli; human intestinal strains; colicinogeny; lysogeny; siderophore
• Tags: colicinogeny, Escherichia coli, human intestinal strains, Lysogeny, siderophore
• Tags: International impact, Reviewed

Abstract

The current incidence of E. coli strains in healthy humans capable of producing the inhibitive exoproducts such as temperate bacteriophages, corpuscular or HMW (high molecular weight) and proteinaceous or LMW (low molecular weight) colicins and siderophores was studied. 53 Escherichia coli strains were collected from the colons of 53 healthy human volunteers in Brno, Czech Republic. The strains were then tested for spontaneous and induced production of inhibitive exoproducts in a cross-test against each other. Of the strains tested, 39.6% produced bacteriophages, 43.4% of strains produced from one to several LMW colicins. Only 5.7% of strains formed HMW colicins. And 15.1% of strains (eight strains) produced exocellular siderophores different from enterochelin. Of the eight strains, seven strains formed aerobactin and one strain formed an untyped siderophore. E. coli strains differ greatly in the incidence of colicinogeny and lysogeny from its closest systemic relatives in the genus Escherichia and therefore should not be regarded as a model bacterium in this respect.

Abstract (in English)

The current incidence of E. coli strains in healthy humans capable of producing the inhibitive exoproducts such as temperate bacteriophages, corpuscular or HMW (high molecular weight) and proteinaceous or LMW (low molecular weight) colicins and siderophores was studied. 53 Escherichia coli strains were collected from the colons of 53 healthy human volunteers in Brno, Czech Republic. The strains were then tested for spontaneous and induced production of inhibitive exoproducts in a cross-test against each other. Of the strains tested, 39.6% produced bacteriophages, 43.4% of strains produced from one to several LMW colicins. Only 5.7% of strains formed HMW colicins. And 15.1% of strains (eight strains) produced exocellular siderophores different from enterochelin. Of the eight strains, seven strains formed aerobactin and one strain formed an untyped siderophore. E. coli strains differ greatly in the incidence of colicinogeny and lysogeny from its closest systemic relatives in the genus Escherichia and therefore should not be regarded as a model bacterium in this respect.

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