Results 41 to 50 of about 99,240 (382)

Testing the content of vitamin A in dietary supplements

open access: yesJournal of Education, Health and Sport, 2019
Vitamins in the human body perform regulatory functions, determine the development, health and physical performance of the body. Most of them are not synthesised in the body, therefore they must be supplied with food. They interact with enzymes, which is
Marcin Ślifirczyk   +3 more
doaj   +5 more sources

Fast microwave-assisted oxidation of 1,4-dihydropyridines with FeCl 3.SiO 2 [PDF]

open access: yes, 2005
Pyridine derivatives are easily obtained in high yields by microwave-promoted rapid oxidation of the corresponding 1,4-dihydropyridines with ferric chloride hexahydrate and silica gel under solvent-free ...
Alaee, E.   +4 more
core   +1 more source

Simultaneous Analysis of Major Coenzymes of Cellular Redox Reactions and Energy Using ex Vivo 1H NMR Spectroscopy

open access: yesAnalytical Chemistry, 2016
Coenzymes of cellular redox reactions and cellular energy mediate biochemical reactions fundamental to the functioning of all living cells. Despite their immense interest, no simple method exists to gain insights into their cellular concentrations in a ...
G. A. Nagana Gowda   +4 more
semanticscholar   +1 more source

Determination of a method for extraction of coenzyme Q10 in human plasma: optimization of the use of surfactants and other variables [PDF]

open access: yesEinstein (São Paulo), 2012
Objective: To establish a routine for the extraction of the total levelsof CoQ10 in human plasma through the Ultra High Performance LiquidChromatography (UHPLC). Methods: Two extraction protocolswere tested: a) methanol: hexane and b) 1-propanol.
Claudia Cristina Ferreiro-Barros   +2 more
doaj   +2 more sources

Environmental boundary conditions for the origin of life converge to an organo-sulfur metabolism [PDF]

open access: yes, 2019
Published in final edited form as: Nat Ecol Evol. 2019 December ; 3(12): 1715–1724. doi:10.1038/s41559-019-1018-8.It has been suggested that a deep memory of early life is hidden in the architecture of metabolic networks, whose reactions could have been
Goldford, Joshua E.   +3 more
core   +1 more source

Vitamin Bs as Potent Anticancer Agents through MMP-2/9 Regulation

open access: yesFrontiers in Bioscience-Landmark
In recent years, the role of coenzymes, particularly those from the vitamin B group in modulating the activity of metalloenzymes has garnered significant attention in cancer treatment strategies.
Ha Vy Thi Vo, Namdoo Kim, Hyuck Jin Lee
doaj   +1 more source

Ultrafast absorption kinetics of NADH in folded and unfolded conformations [PDF]

open access: yes, 2013
The non-radiative energy transfer is shown to occur on a ~3ps time scale for NADH in the folded form in H2O.
Groma, G. I.   +4 more
core   +1 more source

Effect of metabolic and antioxidant supplementation on sperm parameters in oligo-astheno-teratozoospermia, with and without varicocele: a double-blind placebo-controlled study [PDF]

open access: yes, 2018
Since sperm require high energy levels to perform their specialised function, it is vital that essential nutrients are available for spermatozoa when they develop, capacitate and acquire motility.
Agarwal, A.   +8 more
core   +1 more source

Cofactor Selectivity in Methylmalonyl Coenzyme A Mutase, a Model Cobamide-Dependent Enzyme. [PDF]

open access: yes, 2019
Cobamides, a uniquely diverse family of enzyme cofactors related to vitamin B12, are produced exclusively by bacteria and archaea but used in all domains of life.
Mok, Kenny   +5 more
core   +1 more source

B Vitamins and Their Roles in Gut Health

open access: yesMicroorganisms, 2022
B vitamins act as coenzymes in a myriad of cellular reactions. These include energy production, methyl donor generation, neurotransmitter synthesis, and immune functions.
Khandkar Shaharina Hossain   +2 more
doaj   +1 more source

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