Fine surface structure of enterotoxemic Escherichia coli O139:K12 strains associated with swine edema disease |
| |
| Authors: | Y Meno Shuji Fujimoto Kazunobu Amako |
| |
| Institution: | (1) Department of Health and Welfare, Seinan-Jogakuin University, 1-3–5 Ibori, Kokura Kita-ku, Kitakyushu, Fukuoka 803, Japan Tel. +81-93-583-5397; Fax +81-93-592-4287 e-mail: shuji@bact.med.kyushu-u.ac.jp, JP;(2) Department of Bacteriology, Faculty of Medicine, Kyushu University, Fukuoka Japan, JP |
| |
| Abstract: | The fine structure of the cell surface of seven enterotoxemic Escherichia coli (ETEEC) O139:K12 strains isolated from piglets with edema disease were examined electron microscopically using both the negative-staining
method and the freeze-substitution fixation method. Densely packed, fine fibers were observed; they consisted of a capsule
layer approximately 25 nm thick around the cell surfaces of strains 107/86, IW-2, ED-3, ED-43, and ED-61, all of which have
a capacity to adhere strongly to HEp-2 cells. In contrast, no such structure was observed on the surface of strains RK-O139
or ED-1, both of which adhere only weakly to HEp-2 cells. These results suggest that the capsule structure might be associated
with the ability to adhere to HEp-2 cells and, as a result, also potentially play some role in ETEEC infection.
Received: 29 April 1996 / Accepted: 13 August 1996 |
| |
| Keywords: | Escherichia coli Capsule Serotype Edema disease Electron microscopy Cell adhesion |
| 本文献已被 SpringerLink 等数据库收录！ |
|
