Results 21 to 30 of about 5,835 (153)

Quantification and Mechanisms of Oxidative Stress in Chronic Disease

open access: yesProceedings, 2019
There is now strong evidence that the redox environment inside cells is very different to that outside the cell, and that many extracellular environments are both more oxidizing and also subject to extensive oxidation.
Michael J. Davies
doaj   +1 more source

Dracaena arborea (Dracaenaceae) Increases Sexual Hormones and Sperm Parameters, Lowers Oxidative Stress, and Ameliorates Testicular Architecture in Rats with 3 Weeks of Experimental Varicocele

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2021, Issue 1, 2021., 2021
Varicocele is a disease characterized by an abnormal dilation of the pampiniform plexus that drains the testis. The main objective of this work was to evaluate the curative effects of aqueous and ethanolic extracts of Dracaena arborea on some reproductive and antioxidant markers in rats with experimental varicocele. Following varicocele induction, rats
Yannick Baudouin Tchatat Petnga   +8 more
wiley   +1 more source

Direct Determination of the Gibbs' Energy of Formation of Peroxynitrous Acid [PDF]

open access: yesInorganic Chemistry, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sara Goldstein   +3 more
openaire   +4 more sources

The chemistry of peroxynitrite, a biological toxin

open access: yesQuímica Nova, 1998
Oxyradicals play a tole in several diseases. While for several decades the hydroxyl radical - produced via the Fenton reaction - has been considered the species that initiates oxyradical damage, new findings suggest that much of this damage can be ...
W. H. Koppenol
doaj   +1 more source

The stratospheric abundance of peroxynitric acid

open access: yesGeophysical Research Letters, 1977
A recent re‐examination of the kinetics of the reaction of NO2 with HO2 shows this to be a three body reaction leading to the formation of peroxynitric acid (HO2NO2). The rate of formation is such that significant concentrations of HO2NO2 (not previously included in atmospheric models) are expected to form in the stratosphere.
J.P. Jesson   +3 more
openaire   +2 more sources

A comparative study of the major antimicrobial agents against the yeast cells on the tissue model by helium and air surface micro-discharge plasma

open access: yesAIP Advances, 2020
Surface micro-discharge (SMD) plasma with a large-area and homogeneous discharge has attracted much attention in the skin disinfection due to its high antimicrobial efficiency and less side effects on tissues.
Mengru Du   +4 more
doaj   +1 more source

Interaction of solid organic acids with carbon nanotube field effect transistors [PDF]

open access: yesChem. Phys. Lett. 430 (2006) 75, 2007
A series of solid organic acids were used to p-dope carbon nanotubes. The extent of doping is shown to be dependent on the pKa value of the acids. Highly fluorinated carboxylic acids and sulfonic acids are very effective in shifting the threshold voltage and making carbon nanotube field effect transistors to be more p-type devices.
arxiv   +1 more source

Cardiac spheroids as promising in vitro models to study the human heart microenvironment

open access: yesScientific Reports, 2017
Three-dimensional in vitro cell systems are a promising alternative to animals to study cardiac biology and disease. We have generated three-dimensional in vitro models of the human heart (“cardiac spheroids”, CSs) by co-culturing human primary or iPSC ...
Liudmila Polonchuk   +6 more
doaj   +1 more source

Oxidant-modified amylin fibrils and aggregates alter the inflammatory profile of multiple myeloid cell types, but are non-toxic to islet β cells

open access: yesRedox Biology, 2023
Diabetes mellitus currently affects ∼10% of the population worldwide, with Type 2 predominating, and this incidence is increasing steadily. Both Type 1 and 2 are complex diseases, involving β-cell death and chronic inflammation, but the pathways involved
Ramona Clemen   +3 more
doaj  

Symmetry Scheme for Amino Acid Codons [PDF]

open access: yesPhys.Rev.E65, 021912 (2002), 2003
Group theoretical concepts are invoked in a specific model to explain how only twenty amino acids occur in nature out of a possible sixty four. The methods we use enable us to justify the occurrence of the recently discovered twenty first amino acid selenocysteine, and also enables us to predict the possible existence of two more, as yet undiscovered ...
arxiv   +1 more source

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