Results 41 to 50 of about 3,044 (235)

Reaction Mechanisms of H2S Oxidation by Naphthoquinones

open access: yesAntioxidants
1,4-naphthoquinones (NQs) catalytically oxidize H2S to per- and polysufides and sulfoxides, reduce oxygen to superoxide and hydrogen peroxide, and can form NQ-SH adducts through Michael addition.
Kenneth R. Olson   +16 more
doaj   +1 more source

The Reactive Species Interactome in Red Blood Cells: Oxidants, Antioxidants, and Molecular Targets

open access: yesAntioxidants, 2023
Beyond their established role as oxygen carriers, red blood cells have recently been found to contribute to systemic NO and sulfide metabolism and act as potent circulating antioxidant cells. Emerging evidence indicates that reactive species derived from
Miriam M. Cortese-Krott
doaj   +1 more source

Rhodanese Rdl2 produces reactive sulfur species to protect mitochondria from reactive oxygen species

open access: yesFree Radical Biology and Medicine, 2021
Mitochondria damage is related to a broad spectrum of pathologies including Alzheimer's, Parkinson's disease, and carcinogenesis. Recently, it has been found that reactive sulfur species (RSS) has a close connection with mitochondrial health.
Qingda Wang   +6 more
openaire   +2 more sources

Metabolic Reprogramming of Sulfur in Hepatocellular Carcinoma and Sulfane Sulfur-Triggered Anti-Cancer Strategy

open access: yesFrontiers in Pharmacology, 2020
Metabolic reprogramming is a cancer hallmark. Although the reprogramming of central carbon has been well documented, the role of sulfur metabolism has been largely overlooked.
Ximing Zhang   +7 more
doaj   +1 more source

Potential Role of Sulfur-Containing Antioxidant Systems in Highly Oxidative Environments

open access: yesMolecules, 2014
All forms of life maintain a reducing environment (homeostasis) within their cells. Perturbations in the normal redox state can lead to an oxidative environment which has deleterious effects, especially in health.
Emmanuel Mukwevho   +2 more
doaj   +1 more source

Development of Chemical Tools for Studying Reactive Sulfur Species [PDF]

open access: yes, 2020
Hydrogen sulfide (H2S) has recently emerged as an important biological signaling molecule involved in a number of key physiological processes. These observations have generated interest in harnessing H2S as a potential therapeutic agent to treat disease ...
Cerda, Matthew
core  

Iron homeostasis disruption and lipid peroxidation in skeletal muscle during short‐term immobilization

open access: yesFEBS Open Bio, EarlyView.
14‐day casting‐induced immobilization reduced gastrocnemius muscle mass and increased non‐heme iron and ferritin heavy chain levels. Despite iron accumulation, transferrin receptor 1 and iron regulatory protein 2 were paradoxically upregulated. Lipid peroxidation was elevated without compensatory antioxidant responses.
Haruka Yokogawa   +2 more
wiley   +1 more source

A novel S-sulfhydrated human serum albumin preparation suppresses melanin synthesis

open access: yesRedox Biology, 2018
Products of ultraviolet (UV) irradiation such as reactive oxygen species (ROS) and nitric oxide (NO) stimulate melanin synthesis. Reactive sulfur species (RSS) have been shown to have strong ROS and NO scavenging effects. However, the instability and low
Mayumi Ikeda   +10 more
doaj   +1 more source

Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms

open access: yes, 2019
Presents a multidisciplinary analysis of the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS).

core   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

open access: yesFEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata   +13 more
wiley   +1 more source

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