PREVALENCES OF VARIOUS BIOACTIVE ESCHERICHIA COLI STRAINS ISOLATED FROM CLINICAL MATERIALS IN TOKYO AREA IN 1978

• Published in: Keio journal of medicine Vol. 29; no. 3; pp. 111 - 124
• Main Authors: ARAI, TOSHIHIKO, KOMATSU, SADAO, KOMATSU, YOKO
• Format: Journal Article
• Language: English
• Published: Japan The Keio Journal of Medicine 1980
• Subjects: Animals; Chickens; Escherichia coli - classification; Escherichia coli - immunology; Escherichia coli - pathogenicity; Guinea Pigs; Humans; Time Factors; Tokyo; Tokyo
• ISSN: 0022-9717; 1880-1293
• DOI: 10.2302/kjm.29.111

We surveyed the adhesive, enterotoxigenic, hemolytic, colicin producing, cell-invasive, capsule forming, special surface antigen producing and actively iron incorporating strains in the Escherichia coli strains isolated from various clinical materials of general hospitals in dfferent districts. Incidences of these bioactive strains were different depending on the organs isolated but not so different in various hospitals. The differences of distributions of the strains carrying these various activities suggested that human cell specific adhesins and hemolysins gave advantages to the strains to reside in re-spiratory tract, that capsules helped the strains to survive in pustular foci, and that the surface antigens common to enteropathogenic bacteria helped the strains to grow in intestine and respiratory tract. Colicin productions and active incorporations of iron could give advantages to grow over other bacteria but gave no preferences to the special organs. Enterotoxigenic and cell invasive strains were found to be very rare in the clinically isolated strains.