objective(s):  this study was undertaken to investigate the protective effects of vitamin b6, cofactor for cystathionine-γ lyase and cystathionine-β synthase (producers of h2s), alone and in combination with l-cysteine, h2s precursor, on indomethacin-, and ethanol-induced gastric lesions in male nmri mice. materials and methods: fasted male nmri mice were randomly assigned into 12 groups (7 in ...

Objective(s):  This study was undertaken to investigate the protective effects of vitamin B6, cofactor for cystathionine-γ lyase and cystathionine-β synthase (producers of H2S), alone and in combination with L-cysteine, H2S precursor, on indomethacin-, and ethanol-induced gastric lesions in male NMRI mice. Materials and Methods: Fasted male NMRI mice were randomly assigned into 12 groups (7 in ...

A new method in differentiation of chiral molecules is reported based on the fluorescence quenching of functionalized CdS quantum dots (CdS-QDs) as nanosensor by differing in the chirality of functionalization species. The chemically functionalized CdS-QDs with strong yellow emission were prepared using chiral L-cysteine (L-Cyst) and D-cysteine (D-Cyst) molecules. Then, the functionalized CdS-Q...

conclusions the effect of coadministration of nac and coq10 was neither additive nor synergic in protecting against nihl. results the temporary hearing changes that occurred 1-day post exposure were not significantly different in all groups (p > 0.05). the total recovery (between 1 - 21 days after noise exposure) varied by a frequency increase between 1.08 - 19.10 in the noise group compared to...

Abstract Gold nanoparticles are interesting for nanobiomedical applications, such as drug delivery and diagnostic imaging contrast agents. However, their stability reactivity in-vivo influenced by surface properties size. Here, we investigate the electrochemical oxidation of differently sized citrate-coated gold in presence absence L-cysteine, a thiol-containing amino acid with high binding aff...

Gold and glassy carbon electrode surfaces were modified with L-cysteine, the electrochemical behavior of ascorbic acid (AA) was investigated on these new surfaces. To improve efficiency electrodes, optimum conditions for AA determination established. Electrochemical experiments performed at different potential ranges, concentration AA, scan rates, number polymerization cycles pH values. Using c...

lead is an ubiquitous environmental toxin that induces a broad range of physiological biochemical, and behavioral dysfunctions. in this study, we examined the pathologic effects of lead acetate in nmri mouse ovarian tissue and the protective role of antioxidant l-cysteine, against the induced damage. we used lead acetate at a dose of 10 mg/kg, and l-cysteine at a dose of 200 mg/kg. both drugs w...

L-cysteine, a component of the symmetric L-cystine, is essential in numerous biological activities. Thus, detecting cysteine rapidly, selectively, and sensitively tremendous interest. Herein, g-C3N4@CdS composites were employed as sensing elements photoelectrochemical platform for L-cysteine sensing. In this system, provided much better optoelectronic function than bare CdS materials owing to t...