In hepatic disorders, abnormal plasma amino acid profiles are observed. In this study, we examined whether soy protein isolate (SPI) improved plasma methionine concentration in the model animals. Portacaval shunt (PCS) increased alanine aminotransferase (ALT) activity and methionine concentration in blood of rats fed a 40% casein diet supplemented with 0.6% methionine (casein-M diet). A 40% SPI...

The plasma membrane contains some enzymes whose active sites face the external medium rather than the cytoplasm, and these enzymes have been called ‘ectoenzymes’ [ 1,2]. The biological function of an ectoenzyme can thus be explored by treatment of intact cells with impermeant reagents which inactivate the enzyme. Determination of the time course of return of the catalytic activity to steady sta...

BACKGROUND Selol is a novel organoselenium Se(IV) compound. It reveals lower potential of toxicity than sodium selenite and does not exhibit mutagenic activity. Its antioxidant and anticancer properties including overcoming cancer cell resistance to standard therapy of the drug were proven. This is the first publication describing the influence of Selol 5% on the activity of blood antioxidant s...

In the present investigation, effect of pure green tea catechin, (+)-catechin hydrate was studied on plasma uric acid, plasma nitrite, cardiac lipid peroxidation, reduced glutathione and cardiac antioxidant enzymes in high sucrose high fat diet fed rats for a period of 12 weeks. Our results indicate that feeding high sucrose high fat diet resulted in the development of oxidative stress in rats ...

The preservation quality of buffalo semen is poor. The possibility that the cause is inherent in the enzyme system of the spermatozoa and seminal plasma has not so far been systematically studied. There are a few reports on acid and alkaline phosphatase (Eapen, Shrivastava & RazaNasir, 1946; Roy, Pandey & Rawat, 1960; Sengupta, Misra & Roy, 1963; Misra, Singh & Tomar, 1969), but no reports appe...

 The aim of this study was to determine the activity of digestive enzymes during the fry development of Rainbow trout ( Oncorhynchus mykiss ), which has a remarkable role in food digestion and absorption in the first feeding. The assessment of digestive enzymes activity of gastric (pepsin), pancreatic (trypsin, chymotrypsin, α-amylase and lipase) and intestinal (alkaline phosphatase) revealed t...

 The aim of this study was to determine the activity of digestive enzymes during the fry development of Rainbow trout ( Oncorhynchus mykiss ), which has a remarkable role in food digestion and absorption in the first feeding. The assessment of digestive enzymes activity of gastric (pepsin), pancreatic (trypsin, chymotrypsin, α-amylase and lipase) and intestinal (alkaline phosphatase) revealed t...

This study revealed and characterised the presence of the antioxidant enzymes paraoxonase (PON) type 1 (PON-1, extracellular) and type 2 (PON-2, intracellular) in boar semen. To evaluate PON-1, an entire ejaculate from each of ten boars was collected and the seminal plasma was harvested after double centrifugation (1,500g for 10 min). Seminal plasma was analysed for concentration as well as enz...

Because human platelets participate in the contact phase of intrinsic coagulation and contain a Factor XI-like coagulant activity, the nature of the Factor XI-like activity was examined and compared with purified plasma Factor XI. The platelet factor XI-like activity was sedimented with the particulate fraction of a platelet lysate, was inactivated by heat (t(1/2) 3.5 min, 56 degrees C), was no...

Salinity is an important environmental factor that limits plant growth and production. Grape is classified as salt sensitive plants. The object of this study was to evaluate effects of salinity on membrane lipid peroxidation, antioxidant components, and antioxidative enzymes activity in ten grape genotypes native to the regions around Urmia Salt Lake.Malondialdehyde content and protective enzym...