Results 31 to 40 of about 156,055 (260)

Diverse Possibilities of Si-Based Agent, a Unique New Antioxidant

Antioxidants, 2023
Antioxidant therapy is an effective approach for treating diseases in which oxidative stress is involved in the onset of symptoms. This approach aims to rapidly replenish the antioxidant substances in the body when they are depleted due to excess ...
Yoshihisa Koyama, Yuki Kobayashi, Hikaru Kobayashi, Shoichi Shimada   +3 more
doaj   +1 more source

Synthesis of Sulfides and Persulfides Is Not Impeded by Disruption of Three Canonical Enzymes in Sulfur Metabolism

Antioxidants, 2023
Reactive sulfur species, or persulfides and polysulfides, such as cysteine hydropersulfide and glutathione persulfide, are endogenously produced in abundance in both prokaryotes and eukaryotes, including mammals.
Qamarul Hafiz Zainol Abidin, Tomoaki Ida, Masanobu Morita, Tetsuro Matsunaga, Akira Nishimura, Minkyung Jung, Naim Hassan, Tsuyoshi Takata, Isao Ishii, Warren Kruger, Rui Wang, Hozumi Motohashi, Masato Tsutsui, Takaaki Akaike   +13 more
doaj   +1 more source

Geochemistry of reduced inorganic sulfur, reactive iron, and organic carbon in fluvial and marine surface sediment in the Laizhou Bay region, China [PDF]

, 2015
Understanding the geochemical cycling of sulfur in sediments is important because it can have implications for both modern environments (e.g., deterioration of water quality) and interpretation of the ancient past (e.g., sediment C/S ratios can be used ...
Bottrell, S, Mortimer, R, Sheng, Y, Shi, W, Sun, Q   +4 more
core   +1 more source

The Versatile Roles of Sulfur-Containing Biomolecules in Plant Defense—A Road to Disease Resistance

Plants, 2020
Sulfur (S) is an essential plant macronutrient and the pivotal role of sulfur compounds in plant disease resistance has become obvious in recent decades.
András Künstler, Gábor Gullner, Attila L. Ádám, Judit Kolozsváriné Nagy, Lóránt Király   +4 more
doaj   +1 more source

Trace chemical measurements from the northern midlatitude lowermost stratosphere in early spring: Distributions, correlations, and fate [PDF]

, 1997
In situ measurements of a large number of trace chemicals from the midlatitude (37-57°N) lower stratosphere were performed with the NASA DC-8 aircraft during March 1994.
Blake, DR, Bradshaw, JD, Chen, Y, Gregory, GL, Heikes, B, Kondo, Y, Sachse, GW, Singh, HB, Talbot, R, Thornton, D   +9 more
core   +1 more source

Sulfur ligated oxoiron(IV) centre in fenton-like reaction: Theoretical postulation and experimental verification

Catalysis Communications, 2022
The intermediate FeIVO in circumneutral Fenton-like reactions is critical in selective oxidations. However, the inferior electron donation of ligands renders the reactivity of oxoiron(IV) cores.
Shiyu Hu, Donghui Wang, Rujia Guo, Feng Chen   +3 more
doaj   +1 more source

Insights into secondary reactions occurring during atmospheric ablation of micrometeoroids [PDF]

, 2016
Ablation of micrometeoroids during atmospheric entry yields volatile gases such as water, carbon dioxide, and sulfur dioxide, capable of altering atmospheric chemistry and hence the climate and habitability of the planetary surface.
Court, RW, Tan, J
core   +1 more source

Reactive Oxygen, Nitrogen, and Sulfur Species (RONSS) as a Metabolic Cluster for Signaling and Biostimulation of Plants: An Overview

Plants, 2022
This review highlights the relationship between the metabolism of reactive oxygen species (ROS), reactive nitrogen species (RNS), and H2S-reactive sulfur species (RSS).
Julia Medrano-Macías, Adriana Carolina Flores-Gallegos, Erika Nava-Reyna, Isidro Morales, Gonzalo Tortella, Susana Solís-Gaona, Adalberto Benavides-Mendoza   +6 more
doaj   +1 more source

Reactive oxygen species or reactive sulfur species: why we should consider the latter [PDF]

Journal of Experimental Biology, 2020
ABSTRACT The biological effects of oxidants, especially reactive oxygen species (ROS), include signaling functions (oxidative eustress), initiation of measures to reduce elevated ROS (oxidative stress), and a cascade of pathophysiological events that accompany excessive ROS (oxidative distress).
openaire   +2 more sources

Using resonance synchronous spectroscopy to characterize the reactivity and electrophilicity of biologically relevant sulfane sulfur

Redox Biology, 2019
Sulfane sulfur is common inside cells, playing both regulatory and antioxidant roles. However, there are unresolved issues about its chemistry and biochemistry.
Huanjie Li, Huaiwei Liu, Zhigang Chen, Rui Zhao, Qingda Wang, Mingxue Ran, Yongzhen Xia, Xin Hu, Jihua Liu, Ming Xian, Luying Xun   +10 more
doaj   +1 more source