title: Abomasal interstitial fluid-to-blood concentration gradient of pepsinogen in calves with type-1 and type-2 ostertagiosis.
abstract: Pepsinogen and protein concentrations were determined in blood samples, collected from the left gastroepiploic artery and vein, and in abomasal lymph from 15 steers naturally infected with Ostertagia ostertagi and 4 uninfected steers. In steers with type-1 ostertagiosis, the concentration gradient between the mucosal interstitium and the blood alone could account for higher than normal serum pepsinogen concentrations. High interstitial pepsinogen concentrations may have resulted from increased epithelial permeability or increased pepsinogen production and secretion. However, in steers with type-2 ostertagiosis, the concentration gradient could not entirely account for the high serum pepsinogen concentrations, suggesting that capillary permeability or surface area may have been altered. Lymphatic uptake contributed pepsinogen to the blood in all infected steers.
authors.affiliation: Department of Veterinary Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis 95616.
authors.forename: D G
authors.initials: DG
authors.lastname: Baker
authors.forename: M L
authors.initials: ML
authors.lastname: Bruss
authors.forename: L J
authors.initials: LJ
authors.lastname: Gershwin
mesh_terms: D000018:Abomasum / Q000201:enzymology* / Q000473:pathology; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000201:enzymology* / Q000469:parasitology / Q000473:pathology; D005110:Extracellular Space / Q000201:enzymology*; D008196:Lymph / Q000378:metabolism; D008297:Male; D010029:Ostertagiasis / Q000201:enzymology / Q000473:pathology / Q000662:veterinary*; D010435:Pepsinogens / Q000097:blood / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D012044:Regression Analysis
chemical_list: D010435:Pepsinogens; D011506:Proteins