Results 41 to 50 of about 217,573 (335)

Toxicological Effects of Polycyclic Aromatic Hydrocarbon Quinones Contaminated in Diesel Exhaust Particles

Asian Journal of Atmospheric Environment, 2007
Accumulated epidemiological and animal studies have suggested that prolonged exposure to ambient particulate matter (PM) is associated with an increased risk of cardiovascular disease and pulmonary dysfunction.
Yoshito Kumagai, Keiko Taguchi
doaj   +1 more source

Electrodes modified with lipid membranes to study quinone oxidoreductases

, 2009
Quinone oxidoreductases are a class of membrane enzymes that catalyse the oxidation or reduction of membrane-bound quinols/quinones. The conversion of quinone/quinol by these enzymes is difficult to study because of the hydrophobic nature of the enzymes ...
Jeuken, LJC, Weiss, SA
core   +1 more source

Gold Nanoparticles-Based Colorimetric Immunoassay of Carcinoembryonic Antigen with Metal–Organic Framework to Load Quinones for Catalytic Oxidation of Cysteine

Sensors
This work reported gold nanoparticles (AuNPs)-based colorimetric immunoassay with the Cu-based metal–organic framework (MOF) to load pyrroloquinoline quinone (PQQ) for the catalytic oxidation of cysteine.
Zhao-Jiang Yu, Ting-Ting Yang, Gang Liu, De-Hua Deng, Lin Liu   +4 more
doaj   +1 more source

Comparison of calculated and experimental isotope edited FTIR difference spectra for purple bacterial photosynthetic reaction centers with different quinones incorporated into the QA binding site.

Frontiers in Plant Science, 2013
Previously we have shown that ONIOM type (QM/MM) calculations can be used to simulate isotope edited FTIR difference spectra for neutral ubiquinone in the QA binding site in Rhodobacter sphaeroides photosynthetic reaction centers.
Nan eZhao, Hari P Lamichanne, Gary eHastings   +2 more
doaj   +1 more source

Designing a Quinone-Based Redox Mediator to Facilitate Li2S Oxidation in Li-S Batteries

Joule, 2019
Summary In lithium-sulfur (Li-S) batteries, the insulating nature of sulfur and lithium sulfide (Li2S) results in large polarization and low sulfur utilization while the soluble polysulfides lead to internal shuttle upon cycling.
Yuchi Tsao, Minah Lee, Elizabeth C. Miller, Guoping Gao, Jihye Park, Shucheng Chen, T. Katsumata, Helen Tran, Lin-wang Wang, M. Toney, Yi Cui, Zhenan Bao   +11 more
semanticscholar   +1 more source

4,7-Dimethoxy-6-propyl-2H-1,3-benzodioxole-5-carbaldehyde

Molbank, 2023
A simple intermediate for the synthesis of methoxy-analogues of coenzymes Q with substituents having various chain lengths based on natural polyalkoxyallylbenzene apiol has been developed.
Dmitry V. Tsyganov, Victor V. Semenov
doaj   +1 more source

Catalytic Asymmetric (4+3) Cyclizations of In Situ Generated ortho-Quinone Methides with 2-Indolylmethanols.

Angewandte Chemie, 2019
The first catalytic asymmetric (4+3) cyclization of in situ generated ortho-quinone methides with 2-indolylmethanols has been established, which constructed seven-membered heterocycles in high yields (up to 95 %) and excellent enantioselectivity (up to ...
Meng Sun, Chun Ma, Si-Jia Zhou, Sai‐Fan Lou, Jian Xiao, Y. Jiao, F. Shi   +6 more
semanticscholar   +1 more source

Characterization of theThreshold for NAD(P)H:quinone Oxidoreductase Activity in Intact Sulforaphane-treated Pulmonary Arterial Endothelial Cells [PDF]

, 2011
Treatment of bovine pulmonary arterial endothelial cells in culture with the phase II enzyme inducer sulforaphane (5 μM, 24 h; sulf-treated) increased cell-lysate NAD(P)H:quinone oxidoreductase (NQO1) activity by 5.7 ± 0.6 (mean ± SEM)-fold, but intact ...
Bongard, Robert D., Gastonguay, Adam J., Krenz, Gary S., Lindemer, Brian J., Merker, Marilyn P., Williams, Carol L.   +5 more
core   +2 more sources

Convenient Synthesis of 2-Thioimidazolone/Menadione Conjugates via a Two-Step Sequence Starting with Direct Amination of Menadione

SynOpen, 2020
A convenient route to conjugates of 2-thiohydantoins and menadione with linkers of various chemical nature through a two-stage reaction sequence (direct amination of the menadione with a functional amine followed by modification of a functional group) is
Dmitry A. Guk, Olga O. Krasnovskaya, Nikolai V. Zyk, Elena K. Beloglazkina   +3 more
doaj   +1 more source

Metformin promotes mitochondrial integrity through AMPK‐signaling in Leber's hereditary optic neuropathy

FEBS Open Bio, EarlyView.
Metformin mediates mitochondrial quality control in Leber's hereditary optic neuropathy (LHON) fibroblasts carrying mtDNA mutations. At therapeutic levels, metformin activates AMPK signaling to restore mitochondrial dynamics by promoting fusion and restraining fission, while preserving mitochondrial mass, enhancing autophagy/mitophagy and biogenesis ...
Chatnapa Panusatid, Rapasviranda Soiyangsuk, Maneeluck Tanadjindarat, Chayanon Peerapittayamongkol   +3 more
wiley   +1 more source