title: Dynamics of kallikrein activity in different biological fluids of pregnant animals.
abstract: Kallikrein activity was measured in urine, saliva and blood plasma samples from pregnant cows by using the chromogenic substrates S-2266 and S-2302 (Kabi, Sweden). It was found that the kallikrein activity in these biological fluids showed a trend to an increase with a peak prior to parturition. At the same time the plasma prekallikrein levels decreased during pregnancy reaching the lowest values at the end of the gestation period.
authors: Institute of Biology and Immunology of Reproduction, Sofia, Bulgaria.
authors: K
authors: K
authors: Helili
authors: B
authors: B
authors: Somlev
authors: V
authors: V
authors: Karcheva
mesh_terms: D000818:Animals; D001826:Body Fluids / Q000201:enzymology; D002417:Cattle; D002863:Chromogenic Compounds; D005260:Female; D007610:Kallikreins / Q000378:metabolism* / Q000652:urine; D009842:Oligopeptides; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*; D012463:Saliva / Q000201:enzymology; D013379:Substrate Specificity; D013997:Time Factors
chemical_list: D002863:Chromogenic Compounds; D009842:Oligopeptides; C031006:Val-Leu-Arg-p-nitroanilide; C026148:prolyl-phenylalanyl-arginine-4-nitroanilide; D007610:Kallikreins