background: the mechanism of hypoglycemic and hypolipidemic activities of pyrus biossieriana buhse leaf extract (pbble) and its phytochemical component arbutin, have not been well determined. the present study was performed to understand the hypoglycemic activity mechanisms of pbble and arbutin more clearly.methods: in vitro enzymatic carbohydrate digestion with pbble and arbutin was assessed u...

Propionic acid (PA) is a short chain fatty acid, a common food preservative and metabolic end product of enteric bacteria in the gut. The present study was undertaken to investigate the effect of PA on liver injury in male rats. Male western albino rats were divided into two groups. The first group served as normal control, the second was treated with PA. The activities of serum hepatospecific ...

soil enzyme activities are considered as one of the most important biological indicators and reflect the soil quality and fertility. current study was conducted to investigate the relationship between urease, invertase, alkaline phosphatase and aryl sulphatase activities of two histosols (located in kerman and shahrekord provence) and some of the soil chemical and biological properties. soil sa...

The present study attempts to correlate the metabolism and locomotory behavior of 25 species of midwater Cephalopoda from California and Hawaii with the maximal activities of key metabolic enzymes in various locomotory muscle tissues. Citrate synthase (CS) and octopine dehydrogenase (ODH) activities were used as indicators of aerobic and anaerobic metabolic potential respectively. CS activity i...

Fifty-one human glycosyltransferases were expressed in Saccharomyces cerevisiae as immobilized enzymes and were assayed for enzymatic activities. The stem and catalytic regions of sialyl-, fucosyl-, galactosyl-, N-acetylgalactosaminyl-, and N-acetylglucosaminyltransferases were fused with yeast cell wall Pir proteins, which anchor glycosyltransferases at the yeast cell wall glucan. More than 75...

Oxygen free radicals (OFRs) have been implicated in the pathogenesis of an increasing number of diseases and inflammatory states. They may cause cell and tissue damage by their chemical modification of proteins, carbohydrates, nucleotides, and lipids. Under physiological conditions OFRs are part of normal regulatory circuits and are neutralized by antioxidants. Infections are one cause of incre...

A variety of types of tumors seem to show a similar protein composition when proteins ex tracted from them are subjected to electrophoresis or amino acid analysis (3, 10—192). As Greenstein (4) pointed out, “Such degree of correlation among tumors within the same species is consistent with the enzymatic findings . . . which reveal a gener ally consistent metabolic pattern among tumors as co...

In the present study, we investigated to the antioxidant and angiotensin I-converting enzyme (ACE) inhibitory activities of the northern shrimp (Pandalus borealis) by-products (PBB) hydrolysates prepared by enzymatic hydrolysis. The antioxidant and ACE inhibitory activities of five enzymatic hydrolysates (alcalase, protamex, flavourzyme, papain, and trypsin) of PBB were evaluated by the 2, 2′-a...

Background Some studies have revealed enzymatic and non-enzymatic roles of adenosine deaminase (ADA) in male reproductive system such as regulating adenylate cyclase activity by decreasing adenosine concentration, helping to interaction between prostasomes and spermatozoa. MaterialsAndMethods frequency distribution of ADA1 G22A alleles and genotypes in 200 fertile and 200 infertile men. The pol...