Results 31 to 40 of about 3,044 (235)

The Reactive Sulfur Species Concept: 15 Years On [PDF]

open access: yes, 2018
Fifteen years ago, in 2001, the concept of “Reactive Sulfur Species” or RSS was advocated as a working hypothesis. Since then various organic as well as inorganic RSS have attracted considerable interest and stimulated many new and often unexpected ...
Nasim, Muhammad Jawad   +3 more
core   +1 more source

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

open access: yesRedox 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   +10 more
doaj   +1 more source

Biologically Relevant Small Radicals

open access: yesCHIMIA, 2008
Biologically relevant small radicals are at the focus of the working group 4 (WG4) of the COST Action CM0603 (Free Radicals in Chemical Biology, CHEMBIORADICAL). This article surveys the areas of research being undertaken by the partners in WG4.
Georg Bauer   +10 more
doaj   +1 more source

HIx system thermodynamic model for hydrogen production by the sulfur-iodine cycle [PDF]

open access: yes, 2009
The HIx ternary system (H2O – HI – I2) is the latent source of hydrogen for the Sulfur – Iodine thermo-chemical cycle. After analysis of the literature data and models, a homogeneous approach with the Peng-Robinson equation of state used for both the ...
Hadj-Kali, Mohamed   +6 more
core   +1 more source

The Inactivation of LPS Biosynthesis Genes in E. coli Cells Leads to Oxidative Stress

open access: yesCells, 2022
Impaired lipopolysaccharide biosynthesis in Gram-negative bacteria results in the “deep rough” phenotype, which is characterized by increased sensitivity of cells to various hydrophobic compounds, including antibiotics novobiocin, actinomycin D ...
Tatiana A. Seregina   +6 more
doaj   +1 more source

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

open access: yesJournal 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

Inorganic Polysulfides and Related Reactive Sulfur–Selenium Species from the Perspective of Chemistry

open access: yesMolecules, 2019
Polysulfides (H2Sx) represent a class of reactive sulfur species (RSS) which includes molecules such as H2S2, H2S3, H2S4, and H2S5, and whose presence and impact in biological systems, when compared to other sulfur compounds, has only recently attracted ...
Ammar Kharma   +7 more
doaj   +1 more source

A Zero-Valent Sulfur Transporter Helps Podophyllotoxin Uptake into Bacterial Cells in the Presence of CTAB

open access: yesAntioxidants, 2023
Podophyllotoxin (PTOX) is naturally produced by the plant Podophyllum species. Some of its derivatives are anticancer drugs, which are produced mainly by using chemical semi-synthesis methods.
Honglei Liu   +10 more
doaj   +1 more source

Gut microbiota reinforce host antioxidant capacity via the generation of reactive sulfur species

open access: yesCell Reports, 2022
Summary: Gut microbiota act beyond the gastrointestinal tract to regulate the physiology of the host. However, their contribution to the antioxidant capacity of the host remains largely understudied.
Jun Uchiyama   +4 more
doaj   +1 more source

The Reactive Species Interactome in the brain

open access: yes, 2021
CERVOXYInternational audienceSignificance: Redox pioneer Helmut Sies attempted to explain reactive species' challenges faced by organelles, cells, tissues, and organs via three complementary definitions: (1) oxidative stress, i.e.
Chatre, Laurent   +4 more
core   +1 more source

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