The prevention of hepatic encephalopathy by the intravenous infusion of a branched chain amino acid (BCAA)-enriched solution was investigated in methionine and ammonium acetate-treated rats whose liver was already injured with carbon tetrachloride. A BCAA-enriched solution protected the rats from entering a coma. The brain BCAA contents became higher, and the brain methionine and tyrosine level...

Background: In the recent decades, the prevalence of nosocomial infections in neonates has grown and almost 21% of preterm neonates experience these kinds of infections. Some factors were proposed to have a protective effect against neonatal infections through promoting the development of the immune system of the newborn. This study aimed to evaluate the efficacy of oral glutamine supplementati...

background: in the recent decades, the prevalence of nosocomial infections in neonates has grown and almost 21% of preterm neonates experience these kinds of infections. some factors were proposed to have a protective effect against neonatal infections through promoting the development of the immune system of the newborn. this study aimed to evaluate the efficacy of oral glutamine supplementati...

experiment was conducted to evaluate the effect of l-glutamine on coated sperm freezing by using four rams. semen was collected by artificial vagina contact with a tube containing tris-fructose-egg yolk 15%. samples were pooled and centrifuged. after removing supernatant and diluting pellet, samples were split into 5 equal part and added 0, 40, 80, 120 and 160 mm l-glutamine. samples were froze...

Escherichia coli contains two glutaminases, A and B, with pH optima below pH 5 and above pH 7, respectively. Neither glutaminase A nor B is released from E. coli by osmotic shock. Glutaminase B has been purified 6,000-fold and the purified preparation is estimated to contain about 40% glutaminase B. The enzyme has a molecular weight of 90,000 and an isoelectric point of 5.4. Glutaminase B exhib...

Glutamine 5-phosphoribosyl-1-pyrophosphate amidotransferase (EC 2.4.2.14), amidophosphoribosyltransferase, was partially purified from human placenta. Upon exposure to oxygen, both the glutamine and ammonia activities were lost in parallel. Inactivation by oxygen increased as the temperature of incubation rose and the partial pressure of oxygen increased. Molecular oxygen rather than a radical ...

background: improvement in complications of antitumor agents and surgery is important to enhance life quality and survival among patients with colon and colorectal cancer. it has been reported that some dietary components such as glutamine (gln) have beneficial effects on these complications of cancer therapies. however, the results of studies are inconsistent in this area. we performed a revie...

Streptococcus parasanguis is a primary colonizer of dental plaque and a major player in subacute bacterial endocarditis. In the present study, the authors report that an ORF (ORF3) located 77 bp downstream of the fimA operon on the S. parasanguis FW213 chromosome complements an Escherichia coli thiol peroxidase (tpx) mutation in glutamine synthetase (GS) protection assays and that GS is protect...