Results 51 to 60 of about 245,616 (415)

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

International 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

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

Journal 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, Tomaz Alves, Emanuel Silva Rovai, Hatice Hasturk, Thomas Van Dyke, Marinella Holzhausen, Alpdogan Kantarci   +6 more
doaj   +1 more source

Pulse radiolysis studies on superoxide reductase from Treponema pallidum [PDF]

FEBS Letters, Elsevier, 2001, 497, pp.171-3, 2015
Superoxide reductases (SORs) are small metalloenzymes, which catalyze reduction of O2*- to H2O2. The reaction of the enzyme from Treponema pallidum with superoxide was studied by pulse radiolysis methods. The first step is an extremely fast bi-molecular reaction of the ferrous center with O2, with a rate constant of 6 x 10 (8) M(-1) s(-1).
arxiv   +1 more source

Radical pairs and superoxide amplification can explain magnetic field effects on planarian regeneration [PDF]

arXiv, 2023
Weak magnetic field exposure can affect many biological processes across a wide range of living organisms. Recently, it has been observed that weak magnetic fields can modulate reactive oxygen species (ROS) concentration, affecting regeneration in planaria.
arxiv  

Structure of superoxide reductase bound to ferrocyanide and active site expansion upon X-ray-induced photo-reduction [PDF]

Structure, 2004, 12, pp.1729-40, 2015
Some sulfate-reducing and microaerophilic bacteria rely on the enzyme superoxide reductase (SOR) to eliminate the toxic superoxide anion radical (O2*-). SOR catalyses the one-electron reduction of O2*- to hydrogen peroxide at a nonheme ferrous iron center. The structures of Desulfoarculus baarsii SOR (mutant E47A) alone and in complex with ferrocyanide
arxiv   +1 more source

Humanin G (HNG) protects age-related macular degeneration (AMD) transmitochondrial ARPE-19 cybrids from mitochondrial and cellular damage. [PDF]

, 2017
Age-related macular degeneration (AMD) ranks third among the leading causes of visual impairment with a blindness prevalence rate of 8.7%. Despite several treatment regimens, such as anti-angiogenic drugs, laser therapy, and vitamin supplementation ...
Chwa, Marilyn, Cohen, Pinchas, Kenney, M Cristina, Kuppermann, Baruch D, Lu, Stephanie, Nashine, Sonali, Nesburn, Anthony B   +6 more
core   +1 more source

Effect of Inotodiol on LPS-induced Injury of RAW264.7 Cells

Shipin gongye ke-ji, 2023
To explore the effect of Inotolinol (INO) on the inflammatory response of LPS-induced mouse mononuclear macrophages (RAW264.7). The experiment has investigated in vitro the effects of INO on mouse mononuclear macrophages (RAW264.7) induced by LPS.
Yanbin ZHU, Xinting XU, Yanbing LI, Chengming ZHAO, Qingnian HUANG, Zhibao CHEN   +5 more
doaj   +1 more source

1,1-Diphenyl-2-picrylhydrazyl and superoxide anion radical scavenging 1 activities of heterocyclic 2-oxo-1,2,3,4-tetrahydropyrimidines [PDF]

arXiv, 2023
To investigate1,1-Diphenyl-2-picrylhydrazyl (DPPH) and superoxide radical (SOR) 17 scavenging activities of 2-oxo-1,2,3,4-tetrahydropyrimidines derivatives. Free radicals are 18 highly unstable and reactive molecules/atoms. In the body, free radicals form during 19 normal and abnormal metabolism in the body and cause serious damage to other 20 ...
arxiv  

Inhibition of acyl‐CoA synthetase long‐chain isozymes decreases multiple myeloma cell proliferation and causes mitochondrial dysfunction

Molecular Oncology, EarlyView.
Triacsin C inhibition of the acyl‐CoA synthetase long chain (ACSL) family decreases multiple myeloma cell survival, proliferation, mitochondrial respiration, and membrane potential. Made with Biorender.com. Multiple myeloma (MM) is an incurable cancer of plasma cells with a 5‐year survival rate of 59%.
Connor S. Murphy, Heather Fairfield, Victoria E. DeMambro, Samaa Fadel, Carlos A. Gartner, Michelle Karam, Christian Potts, Princess Rodriguez, Ya‐Wei Qiang, Habib Hamidi, Xiangnan Guan, Calvin P. H. Vary, Michaela R. Reagan   +12 more
wiley   +1 more source

Cycling Li-O2 batteries via LiOH formation and decomposition [PDF]

Science, 2015
Solving the problems with Li-air batteries Li-air batteries come as close as possible to the theoretical limits for energy density in a battery. By weight, this is roughly 10 times higher than conventional lithium-ion batteries and would be sufficient to
Tao Liu, M. Leskes, Wanjing Yu, A. J. Moore, Lina Zhou, P. M. Bayley, Gunwoo Kim, C. Grey   +7 more
semanticscholar   +1 more source