background: culture media enrichment through the addition of protein hydrolysates is beneficial for achieving higher protein expression. methods: in this study, designing the optimum mixture of four soy and casein-derived hydrolysates was successfully performed by design of experiment and specific productivity increased in all predicted combinations. protein profile of recombinant cho (rcho) ce...

Pyruvate dehydrogenase (PDH) is a mitochondrial enzyme responsible for regulating the conversion of pyruvate to acetyl-CoA for use in the tricarboxylic acid cycle. PDH is regulated through phosphorylation and inactivation by PDH kinase (PDK) and dephosphorylation and activation by PDH phosphatase (PDP). The effect of endurance training on PDK in humans has been investigated; however, to date no...

The study was aimed at assessing the total enzyme activity and the profile of breast cancer and dysplasia on the human material. In addition, the validity of data was evaluated from the aspect of improving diagnostics. Lactate dehydrogenase activity, as well as the profile of its isoenzymes, pyruvate kinase and hexokinase, were measured. The study included 60 samples of breast cancer, out of wh...

Metabolism is involved directly or indirectly in all processes conducted in living cells. The brain, popularly viewed as a neuronal-glial complex, gets most of its energy from the oxygen-dependent metabolism of glucose, and the mitochondrial pyruvate dehydrogenase complex (PDC) plays a key regulatory role during the oxidation of glucose. Pyruvate dehydrogenase kinase (also called PDC kinase or ...

Fish can go through periods of feed deprivation, either due to natural causes influenced by temperature or management techniques in animal production, affecting their energy metabolism differently, depending on the duration fasting days and water temperature. This study showed effect different before slaughter rainbow trout analyzing intermediary metabolic enzymes muscle liver. For this purpose...

Pyruvate dehydrogenase from pig heart exists in active and inactive forms. Interconversion from the active (dephospho) form into the inactive (phospho) form is catalyzed by an ATP-dependent kinase. Conversely the enzyme is reactivated by a phosphatase which removes the phosphate group from the protein. By gradient centrifugation pyruvate dehydrogenase was prepared free of phosphatase but still ...

We describe the isotopic exchange of lactate and pyruvate after arm vein infusion of [3-(13)C]lactate in men during rest and exercise. We tested the hypothesis that working muscle (limb net lactate and pyruvate exchange) is the source of the elevated systemic lactate-to-pyruvate concentration ratio (L/P) during exercise. We also hypothesized that the isotopic equilibration between lactate and p...

Glavonoid-rich oil (GRO) derived from ethanol extraction of licorice (Glycyrrhiza glabra Linne) root has been reported to have beneficial effects on health. In this study, we aimed determine the effect long-term administration GRO metabolic disorders and elucidate molecular mechanism. Female obese, type 2 diabetic KK-Ay mice were fed diets supplemented with 0.3% or 0.8% (w/w) for 4–12 weeks. Mi...