Binding affinity of anti-xylitol antibodies to canine hepatic vessels.
Xylitol is used as a sugar substitute in food products. Dogs have been reported to experience lethal liver injury after accidental ingestion of xylitol. Because liver injury may be a serious consequence of canine immune-mediated reactions, antibodies produced against xylitol may attack the liver. Therefore, in the present study, we evaluated whether binding sites for xylitol antibodies are located at the liver or not. Anti-xylitol antibodies were generated by immunization of rabbits with a xylose-bovine serum albumin conjugate. Immunohistological examination showed that binding sites for the anti-xylitol antibodies were located in the hepatic arteries and the portal veins. Western blotting analyses by using a canine liver homogenate showed 4 protein bands with different molecular weights which reacted with anti-xylitol antibodies. Therefore, binding of anti-xylitol antibodies to the vessels may be the first step in an immune-mediated pathogenic response in xylitol toxicity. Further studies are necessary to determine the effects of anti-xylitol antibodies on the liver in the pathogenesis of xylitol toxicity.
Department of Physiology II, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.
Akihiro
A
Imai
Toshiho
T
Nishita
Nobutsune
N
Ichihara
Kinji
K
Shirota
Kensuke
K
Orito
D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000276:immunology*; D001666:Binding Sites, Antibody; D015153:Blotting, Western / Q000662:veterinary; D056486:Chemical and Drug Induced Liver Injury / Q000276:immunology / Q000378:metabolism / Q000662:veterinary*; D004283:Dog Diseases / Q000139:chemically induced* / Q000276:immunology / Q000378:metabolism; D004285:Dogs; D005260:Female; D006499:Hepatic Artery / Q000276:immunology; D007150:Immunohistochemistry / Q000662:veterinary; D008099:Liver / Q000098:blood supply / Q000276:immunology* / Q000378:metabolism; D011169:Portal Vein / Q000276:immunology; D011817:Rabbits; D014993:Xylitol / Q000276:immunology* / Q000633:toxicity
D000888:Antibodies, Anti-Idiotypic; D014993:Xylitol