Objective: The main objective of this study was to compare the effects minimal and high gas flow-controlled hypotension applications on IMA thiol/disulfide balance, which are indicators oxidative stress.Methods: Patients undergoing elective tympanoplasty were randomized two groups as minimal-flow high-flow anesthesia groups. Minimal flow performed with 5L/min fresh reduced 0.4 L/min. High admin...

Cysteines play an important role in protein biochemistry. The unique chemical property and high reactivity of the free thiol group makes reduced cysteine a versatile component of catalytic centers and metal binding sites in many cytosolic proteins and oxidized cystine a stabilizing component in many secreted proteins. Moreover, cysteines readily react with reactive oxygen and nitrogen species t...

Trudinger, P. A. (Division of Plant Industry, Canberra, Australia). Effect of thiol-binding reagents on the metabolism of thiosulfate and tetrathionate by Thiobacillus neapolitanus. J. Bacteriol. 89:617-625. 1965.-Iodoacetamide, N-ethyl maleimide (NEM), p-chloromercuribenzoate (CMB), Mercurochrome, and HgCl(2) inhibited the oxidation of thiosulfate to sulfate by Thiobacillus neapolitanus; tetra...

The present study was designed to evaluate the plasma markers of reactive oxygen species (ROS) activity and cytokines, and their relationship with thiol redox status of basketball players during training. Sixteen professional players of the Polish Basketball Extraleague participated in the study. The study was performed during the preparatory period and the play-off round. Markers of ROS activi...

We have examined the role of thiol-disulfide exchange reactions during the penetration of cells by Sindbis virus. The protein-protein association that form the rigid icosahedral lattice of the Sindbis virus envelope have been shown to be stabilized by disulfide bridges, and reduction of these critical disulfide bridges during cell penetration may be the mechanism by which the rigid protein latt...

The synthetic low-molecular-weight thiol, 2-mercaptoethanesulfonate (mesna), exerts efficient protection against oxazaphosphorine-induced urothelial toxicity by binding the renally excreted and concentrated toxic metabolite(s). In this study, the pharmacokinetics and metabolism of mesna and its disulfide form (dimesna) have been investigated in the intact rat and in several in vitro systems, in...

Cannabidiol, the major nonpsychotropic phytocannabinoid, has been recently demonstrated to induce apoptosis in primary lymphocytes via an oxidative stress-dependent mechanism. Cannabidiol can be converted by microsomal enzymes to the hydroxyquinone metabolite HU-331 that forms adducts with glutathione. The present study tested the hypothesis that HU-331 could cause apoptosis via the depletion o...

Studies on plasma and cells exposed to hydroxyl and peroxyl radicals have indicated that there are few inhibitors of protein hydroperoxide formation. We have, however, observed a small variable lag period during bovine serum albumin (BSA) oxidation by 2-2' azo-bis-(2-methyl-propionamidine) HCl (AAPH) generated peroxyl radicals, where no protein hydroperoxide was formed. The addition of free cys...

A highly sensitive and specific LC-MS/MS method for the quantitation of largazole thiol, the active species of the marine-derived preclinical histone deacetylase inhibitor, largazole (prodrug), was developed and validated. Largazole thiol was extracted with ethyl acetate from human or rat plasma along with the internal standard, harmine. Samples were separated on an Onyx Monolithic C18 column b...

Objectives. The aim of the present investigation was to study the activity of glucose-6-phosphate dehydrogenase (G6PD) and correlate its activity to protein oxidation markers in type 2 diabetic patients under poor glycemic control. Methods. G6PD activity, protein carbonyl group concentration, and total thiol group content were measured in blood samples of 40 patients with type 2 diabetes mellit...