Results 21 to 30 of about 14,546 (303)

Catalytically active gold clusters with atomic precision for noninvasive early intervention of neurotrauma

open access: yesJournal of Nanobiotechnology, 2021
Background Neurotrauma is a worldwide public health problem which can be divided into primary and secondary damge. The primary damge is caused by external forces and triggers the overproduction of peroxides and superoxides, leading to long-lasting ...
Yunguang Zhang   +8 more
doaj   +1 more source

Antiradical and antiulcer effect of Sonneratia apetala Buch-Ham leaves against alcohol induced gastric mucosal injury

open access: yesArs Pharmaceutica, 2021
Introduction: Sonneratia apetala Buch-Ham is a true mangrove inhabitant in Indian Sunderban and it is used in folk medicine for digestive disorders. Method: Hydro-methanolic (20:80) extract of Sonneratia apetala leaves (SA) was chemically standardized
Avijit Hazra   +3 more
doaj   +1 more source

Nickel-gallate metal–organic framework as an efficient antimicrobial and anticancer agent: in vitro study

open access: yesCancer Nanotechnology, 2023
Gallic acid is a natural antioxidant present in many plants such as tea, sumac, gallnut and other plants. This naturally occurring gallic acid is known to exhibit auto-oxidation under certain conditions, generating several reactive oxygen species (ROS ...
Ahmed. A. G. El-Shahawy   +4 more
doaj   +1 more source

Isorhamnetin Influences the Viability, Superoxide Production and Interleukin-8 Biosynthesis of Human Colorectal Adenocarcinoma HT-29 Cells In Vitro

open access: yesLife, 2023
Isorhamnetin has gained research interest for its anti-inflammatory, anti-proliferative and chemoprotective properties. In this study, human colon adenocarcinoma cells were cultured in the presence or absence of different isorhamnetin concentrations (5 ...
Hana Greifová   +9 more
doaj   +1 more source

Photochemical reactivity of zinc tetraphenylporphyrin induced by nonstoichiometric CdS nanoparticles in 2-propanol

open access: yesInternational Journal of Photoenergy, 2001
The photoreactivity of zinc tetraphenylporphyrin (ZnTPP) in the presence of photoexcited CdS nanoparticles and molecular oxygen in 2-propanol has been revisited.
Alex V. Isarov, John Chrysochoos
doaj   +1 more source

Key problems of the four-dimensional Earth system

open access: yesMatter and Radiation at Extremes, 2020
Compelling evidence indicates that the solid Earth consists of two physicochemically distinct zones separated radially in the middle of the lower mantle at ∼1800 km depth.
Ho-kwang Mao, Wendy L. Mao
doaj   +1 more source

Sensitive superoxide detection in vascular cells by the new chemiluminescence dye L-012 [PDF]

open access: yes, 1999
The detection superoxide production in vascular cells is usually limited by a low sensitivity of available assays, We tested the applicability of the luminol derivate L-012 {[}8-amino-5-chloro-7-phenylpyridol{[}3,4-d]pyridazine-l,4(2H,3H)dione] to ...
Gloe, Torsten   +4 more
core   +1 more source

Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

open access: yeseLife, 2018
Mitochondrial dysfunction and subsequent metabolic deregulation is observed in neurodegenerative diseases and aging. Mutations in the presenilin (PSEN) encoding genes (PSEN1 and PSEN2) cause most cases of familial Alzheimer’s disease (AD); however, the ...
Shaarika Sarasija   +5 more
doaj   +1 more source

Arginine-specific gingipains (RgpA/RgpB) knockdown modulates neutrophil machinery

open access: yesJournal of Oral Microbiology
Background Gingipains are important virulence factors present in Porphyromonas gingivalis. Arginine-specific gingipains (RgpA and RgpB) are critically associated with increased proteolytic activity and immune system dysfunction, including neutrophilic ...
Vanessa Tubero Euzebio Alves   +6 more
doaj   +1 more source

Rubidium superoxide: a p-electron Mott insulator [PDF]

open access: yes, 2012
Rubidium superoxide, RbO_2, is a rare example of a solid with partially-filled electronic p states, which allows to study the interplay of spin and orbital order and other effects of strong electronic correlations in a material that is quite different ...
Claude Ederer   +4 more
core   +2 more sources

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