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Berberine AND nad+ ratio

Wo-Lin Hou, Jun Yin, Miriayi Alimujiang, Xue-Ying Yu, Li-Gen Ai, Yu-Qian Bao, Fang Liu, Wei-Ping Jia
Accumulating evidences showed metformin and berberine, well-known glucose-lowering agents, were able to inhibit mitochondrial electron transport chain at complex I. In this study, we aimed to explore the antihyperglycaemic effect of complex I inhibition. Rotenone, amobarbital and gene silence of NDUFA13 were used to inhibit complex I. Intraperitoneal glucose tolerance test and insulin tolerance test were performed in db/db mice. Lactate release and glucose consumption were measured to investigate glucose metabolism in HepG2 hepatocytes and C2C12 myotubes...
February 2018: Journal of Cellular and Molecular Medicine
Shatrunajay Shukla, Ankita Sharma, Vivek Kumar Pandey, Sheikh Raisuddin, Poonam Kakkar
Post-translational modifications i.e. phosphorylation and acetylation are pivotal requirements for proper functioning of eukaryotic proteins. The current study aimed to decode the impact of acetylation/deacetylation of non-histone targets i.e. FoxO1/3a and p53 of sirtuins (NAD(+) dependent enzymes with lysine deacetylase activity) in berberine treated human hepatoma cells. Berberine (100 μM) inhibited sirtuins significantly (P<0.05) at transcriptional level as well as at translational level. Combination of nicotinamide (sirtuin inhibitor) with berberine potentiated sirtuins inhibition and increased the expression of FoxO1/3a and phosphorylation of p53 tumor suppressor protein...
January 15, 2016: Toxicology and Applied Pharmacology
Jaroslaw Dudka, Franciszek Burdan, Justyna Szumilo, Edyta Tokarska, Agnieszka Korobowicz, Robert Klepacz, Renata Gieroba, Barbara Madej, Elzbieta Korobowicz
Metabolic acidosis severely complicates methanol and ethylene glycol intoxications. Acidosis is caused by acid metabolites and can be intensified by lactate elevation. Lactate concentration depends on the NADH(2)/NAD ratio. Lactate dehydrogenase (LDH, E.C. supplies more lactate when the level of NADH(2) is elevated. The aim of the study was to evaluate the effect of alcohol dehydrogenase (ADH) inhibitors and substrates: cimetidine, EDTA, 4-methylpyrazole (4-MP), Ukrain and ethanol on LDH activity...
November 2005: Journal of Applied Toxicology: JAT
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