... the use of hyperpolarized [1- 13 C]lactate and [2- 13 C]pyruvate in dynamic nuclear polarization (DNP) NMR experiments to measure the rapid pyruvate and lactate kinetics in rat muscle. With a 3 s temporal resolution, 13 C DNP NMR detects both [1- 13 C]lactate and [2- 13 C]pyruvate kinetics in muscle...

... that triglycerides were not involved in glycerol synthesis. After intramuscular injection of 14 C-labeled pyruvate, [ 14 C]glycerol was found in the blood, liver and muscle, indicating a second route, presumably from muscle protein, to glycerol synthesis. Liver phosphoenolpyruvate carboxykinase activity was slightly...

...J. Pesquero; T. Roig; J. Bermudez; J. Sanchez ABSTRACT The present study investigates energy metabolism by trout red blood cells. It is shown that they are able to use pyruvate at physiological concentrations as an aerobic source of energy. Moreover, microcalorimetric data suggest that trout...

...Kirsti Tiihonen; Mikko Nikinmaa ABSTRACT L-Lactate and pyruvate permeability and utilization in carp ( Cyprinus carpio ) red blood cells was studied in vitro with tracer methods. Transport of lactate and pyruvate across the carp red blood cell membrane is rapid. At low plasma concentrations...

...K. Tiihonen; M. Nikinmaa 17 7 1991 © 1991 by Company of Biologists 1991 carp erythrocyte metabolism lactate pyruvate glutamine glucose glutamate aspartate isoleucine adenosine Cyprinus carpio Compared with the anucleated mammalian erythrocytes, which rely...

... synthase (CS) in RM reflects the higher mitochondrial density in this tissue. RM mitochondria oxidize pyruvate and fatty acyl carnitines (8:0, 12:0, 16:0) at similarly high rates. WM mitochondria oxidize these fatty acyl carnitines at 35–70% the rate of pyruvate, depending on chain length. WM has only half...