Results 31 to 40 of about 435,752 (317)

Analysis of Protein Oxidative Modifications in Follicular Fluid from Fertile Women: Natural Versus Stimulated Cycles

open access: yesAntioxidants, 2018
Oxidative stress is associated with obstetric complications during ovarian hyperstimulation in women undergoing in vitro fertilization. The follicular fluid contains high levels of proteins, which are the main targets of free radicals.
Irantzu Pérez-Ruiz   +7 more
doaj   +1 more source

Reactive Oxygen Species Formed by Metal and Metal Oxide Nanoparticles in Physiological Media—A Review of Reactions of Importance to Nanotoxicity and Proposal for Categorization

open access: yesNanomaterials, 2022
Diffusely dispersed metal and metal oxide nanoparticles (NPs) can adversely affect living organisms through various mechanisms and exposure routes.
Amanda Kessler   +3 more
doaj   +1 more source

Mechanism and Energetics of Intramolecular Hydrogen Transfer in Amide and Peptide Radicals and Cation-Radicals [PDF]

open access: yes, 2016
Intramolecular hydrogen transfer in five model amide and peptide radicals and cation-radicals was investigated by combined B3LYP-MP2 calculations. Hypervalent ammonium radicals produced by electron capture in protonated peptides undergo competitive ...
František Tureček (2446060)   +1 more
core   +1 more source

Activation of Anthracene Endoperoxides in Leishmania and Impairment of Mitochondrial Functions

open access: yesMolecules, 2018
Leishmaniasis is a vector-borne disease caused by protozoal Leishmania. Because of resistance development against current drugs, new antileishmanial compounds are urgently needed.
Gerald Geroldinger   +9 more
doaj   +1 more source

From‐Neutral‐to‐Neutral Reductive Radical Coupling of Non‐Activated Alcohols and Styrenes

open access: yesChemistryEurope, 2023
A reductive radical coupling reaction between non‐activated aliphatic alcohols and styrenes has been discovered through the use of low‐valent Ti‐mediated C−O bond homolysis.
Dr. Takuya Suga   +2 more
doaj   +1 more source

The oxime portmanteau motif : released heteroradicals undergo incisive EPR interrogation and deliver diverse heterocycles [PDF]

open access: yes, 2014
OA funded through the RCUK OA block grant.Selective syntheses are now available for compounds of many classes, based on C-centered radicals, exploiting a diverse range of mechanisms.
John C. Walton, Walton, John Christopher
core   +1 more source

Antioxidant Protection from UV- and Light-Stress Related to Carotenoid Structures

open access: yesAntioxidants, 2019
This review summarizes studies of protection against singlet oxygen and radical damage by carotenoids. The main focus is on how substitutions of the carotenoid molecules determine high antioxidant activities such as singlet oxygen quenching and radical ...
Gerhard Sandmann
doaj   +1 more source

A Hierarchy of Ligands Controls Formation of Aryl Radicals in Pd-Catalyzed Ground State Reactions [PDF]

open access: yes, 2023
Palladium salts and complexes were tested separately and in the presence of added ligands, as potential sources of aryl radicals in ground state coupling reactions of aryl halide with arenes under basic conditions (KOtBu).
John, Murphy   +2 more
core   +1 more source

Synthetic Strategies for 5- and 6-Membered Ring Azaheterocycles Facilitated by Iminyl Radicals

open access: yesMolecules, 2016
The totality of chemical space is so immense that only a small fraction can ever be explored. Computational searching has indicated that bioactivity is associated with a comparatively small number of ring-containing structures. Pyrrole, indole, pyridine,
John C. Walton
doaj   +1 more source

Balur and Improving Quality of Life [PDF]

open access: yesJournal of Tropical Life Science, 2016
Balur treatment aimed to leach free radicals overwhelmingly produced in unhealthy body with rubbed over the human body. In Balur used some amino acid, bawang sabrang (Eleutherine palmifolia (L.) Merr), kopi balur (Mixed Coffea arabica L.
Gatra Ervi Jayanti, Saraswati Subagjo
doaj  

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