title: Endotoxin concentrations measured by a chromogenic assay in portal and peripheral venous blood in ten dogs with portosystemic shunts.
abstract: A chromogenic Limulus amebocyte lysate assay was used to measure portal and peripheral venous endotoxin concentrations in ten medically managed dogs undergoing surgery for correction of a single extrahepatic portosystemic shunt. In all dogs, both peripheral and portal venous blood samples were obtained at the time of surgical manipulation of the anomalous vessel. In six dogs, peripheral venous samples were obtained an average of 8.0 months after surgery. Five physically normal dogs without biochemical or histologic evidence of liver disease served as controls. Data analysis failed to demonstrate significant differences in peripheral and portal venous endotoxin concentrations between the control and study groups. Postoperatively five of six dogs showed a measurable reduction in peripheral venous endotoxin concentration over intraoperatively obtained values, but the differences were not statistically significant (P = 0.06). Based on results of this study it was concluded that systemic endotoxemia was not present in dogs with a single extrahepatic portosystemic shunt that were medically stable prior to surgery.
authors.affiliation: Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis 95616.
authors.forename: S L
authors.initials: SL
authors.lastname: Peterson
authors.forename: P D
authors.initials: PD
authors.lastname: Koblik
authors.forename: P G
authors.initials: PG
authors.lastname: Whiting
authors.forename: E M
authors.initials: EM
authors.lastname: Breznock
mesh_terms: D000818:Animals; D002863:Chromogenic Compounds; D004285:Dogs / Q000601:surgery*; D004731:Endotoxins / Q000097:blood*; D005500:Follow-Up Studies; D007601:Jugular Veins; D008033:Limulus Test; D011169:Portal Vein; D011170:Portasystemic Shunt, Surgical / Q000662:veterinary*
chemical_list: D002863:Chromogenic Compounds; D004731:Endotoxins