First Author | Cilmi SA | Year | 2006 |
Journal | J Infect Dis | Volume | 194 |
Issue | 8 | Pages | 1135-40 |
PubMed ID | 16991089 | Mgi Jnum | J:147262 |
Mgi Id | MGI:3839749 | Doi | 10.1086/507705 |
Citation | Cilmi SA, et al. (2006) Fabry disease in mice protects against lethal disease caused by Shiga toxin-expressing enterohemorrhagic Escherichia coli. J Infect Dis 194(8):1135-40 |
abstractText | Fabry disease is an X-linked recessive disorder in which affected persons lack alpha-galactosidase A (alpha -GalA), which leads to excess glycosphingolipids in tissues, mainly globotriaosylceramide (Gb3). Gb3 is the cellular receptor for Shiga toxin (Stx), the primary virulence factor of enterohemorrhagic Escherichia coli. alpha-GalA-knockout mice were significantly protected against lethal intraperitoneal doses of Stx2 or oral doses of Stx2-expressing bacteria, compared with wild-type (wt) control mice. Kidneys of moribund wt mice revealed tubular necrosis, but no histopathologic changes were observed in Gb3-overexpressing mice. Reducing Gb3 levels in alpha-GalA-knockout mice by the intravenous injection of recombinant human alpha-GalA restored the susceptibility of knockout mice to lethal doses of Stx2. These results suggest that excess amounts of Gb3 in alpha-GalA-deficient mice may impair toxin delivery to susceptible tissues. |