| Literature DB >> 12223160 |
C Nucci1, W D da Silveira, S da Silva Corrêa, G Nakazato, S Y Bando, M A Ribeiro, A F Pestana de Castro.
Abstract
It is difficult to use tissue culture assays to investigate adherence and other properties of Edwardsiella tarda because the organism is invasive and produces a potent hemolysin. We therefore relied on polymerase chain reaction (PCR) to determine the occurrence of genes for enterotoxins (LT-I, EAST-1), Shiga toxin (Stx-1, Stx-2), cytotoxic necrotizing factors (CNF-1, CNF-2), aerobactin, invasion plasmid of enteroinvasive Escherichia coli, EPEC adherence factor (EAF), intimin (Eae), enterohemolysin (EntHly) and hemolysin (Hly) in 53 isolates of E. tarda from humans and fish from several countries. All isolates were negative for all genes investigated by PCR. Adhesion to and invasion of HeLa cells were determined by using the unusually short incubation time of 1h or 30 min. All isolates adhered and invaded in these tests. Finally, a random amplified polymorphic DNA (RAPD) test distinguished, with a few exceptions, isolates of human and fish origin.Entities:
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Year: 2002 PMID： 12223160 DOI： 10.1016/s0378-1135(02)00151-7
Source DB: PubMed Journal: Vet Microbiol ISSN： 0378-1135 Impact factor: 3.293