Glutathione reductase

A Total 8 semen sample from four healthy Gir breeding bulls were collected at weekly interval for two weeks period using of artificial vagina method for evaluation of semen biochemical attributes at various stages of cryopreservation of Gir bull semen. The overall mean values for oxidative stress parameters viz. lipid peroxidation and glutathione reductase were 51.14 ± 0.18 μmol/ml and 32.24 ± 0.64 U/L, respectively in neat semen samples.

7p nguaconbaynhay5 16-05-2020 16 0   Download

Previously, we demonstrated apoptotic cell death in the chorion laeve trophoblast layer of human fetal membrane tissues during the late stages of pregnancy, the progression of apoptosis during incubation in vitro, and its suppression by a low concentration of glucocorticoid hormones.

8p system191 01-06-2013 33 5   Download

Glutathione reductase (GR) recycles oxidized glutathione (GSSG) by converting it to the reduced form (GSH) using an NADPH as the electron source. The function of GR in the male genital tract of the rat was examined by meas-uring its enzymatic activity and examining the gene expression and localization of the protein.

9p research12 29-04-2013 46 3   Download

GlutathioneS-transferases (EC 2.5.1.18) (GSTs), are a family of multifunctional enzymes present in all living organisms whose main function is the detoxification of electrophilic compounds. GSTs are considered the most prominent detoxifying class II enzymes in helminths. We describehere the characterizationof novel dehydroascorbate reductase and thiol transferase activities that reside in the human parasite Schistosoma mansoni GSTx.

10p tumor12 22-04-2013 30 2   Download

Themosquito,Anopheles gambiae, is an important vector of Plasmodium falciparum malaria. Full genome analysis revealed that, as in Drosophila melanogaster,the enzyme glutathione reductase is absent inA. gambiaeand func-tionally substituted by the thioredoxin system. The key enzyme of this system is thioredoxin reductase-1, a homo-dimeric FAD-containing protein of 55.3 kDa per subunit, which catalyses the reaction NADPH + H + + thio-redoxin disulfidefiNADP + + thioredoxin dithiol.

10p tumor12 20-04-2013 31 3   Download

Dehydroascorbate reductase (DHAR) reduces dehydro-ascorbate (DHA) to ascorbate with glutathione (GSH) as the electron donor. We analyzed the reactionmechanismof spinach chloroplast DHAR, which had a much higher reaction specificity for DHA than animal enzymes, using a recombinant enzyme expressed inEscherichia coli. Kinetic analysis suggested that the reaction proceeded by a bi-uni-uni-uni-ping-pong mechanism, in which binding of DHA to the free, reduced formof the enzyme was followed bybindingofGSH....

8p tumor12 20-04-2013 46 6   Download

Three pairs of parental (q + ) and established mitochondrial DNAdepleted (q 0 ) cells, derived frombone, lungandmuscle were used to verify the influence of the nuclear background and the lack of efficient mitochondrial respiratory chain on antioxidant defences and homeostasis of intracellular reactive oxygen species (ROS).

11p awards 05-04-2013 44 4   Download

Pycnogenol  , which is extracted from the bark of French maritime pine, has been shown to have antioxidant and free radical scavenging activities. Thioredoxin reductase (TrxR), glutathione peroxidase (GPx) and glutathi-one reductase (GR) are three central redox enzymes that are active in endogenous defence against oxidative stress in the cell.

9p vinaphone15 27-02-2013 42 2   Download

Dược động học Các nitrat hữu cơ chịu ảnh hưởng rất mạn h của enzim gan glutathion organic nitrat reductase, thuốc bị khử nitrat từng bước và mất hoạt tính. Nitroglycerin đặt dưới lưỡi, đạt nồng độ tối đa sau 4 phút, t/2 = 1 -3 phút. Chất chuyển hoá dinitrat có hoạt tính giãn mạch kém 10 lần và t/2 khoảng 40 p hút. Isosorbid dinitrat đặt dưới lưỡi có pic huyết tương sau 6 phút và t/2 = 45 phút. Các chất chuyển hoá ban đầu là isosorbid - 2 - mononitrat và isosorbid - 5 mononitrat...

6p thaythuocvn 26-10-2010 120 18   Download