Cerebral energy metabolism is a highly compartmentalized and complex process in which transcellular trafficking of metabolites plays a pivotal role. Over the past decade, a role for lactate in fueling the energetic requirements of neurons has emerged. Furthermore, a neuroprotective effect of lactate during hypoglycemia or cerebral ischemia has been reported. The majority of the current evidence...

BACKGROUND Besides its role as a fuel source in intermediary metabolism, lactate has been considered a signaling molecule modulating lactate-sensitive genes involved in the regulation of skeletal muscle metabolism. Even though the flux of lactate is significantly high in the heart, its role on regulation of cardiac genes regulating lactate oxidation has not been clarified yet. We tested the hyp...

A bolus injection of [14C]lactate was used to measure lactate turnover rates at rest and during recovery from exhaustive exercise in coho salmon (Oncorhynchus kisutch) and starry flounder (Platichthys stellatus). At rest, lactate turnover rate in salmon was almost double that in flounder (1.33 versus 0.76 mumol min-1 kg-1), which reflected the higher blood lactate level in salmon (1.00 versus 0...

1. The effects of varying PCO2 on lactate uptake and intracellular pH (pHi) were studied in the isolated rat liver perfused with differing concentration of lactate. 2. In general, pHi and lactate uptake are inversely related to PCO2, and pHi and lactate uptake are directly related to each other, but the quantitative aspects and significance of these relationships vary with the availability of l...

D-Lactate produced by abundant intestinal lactobacilli during acidotic episodes in short bowel (SB) patients is commonly regarded as a main factor in the pathogenesis of SB syndrome-associated (D-lactic) acidosis. Since we had observed that gram-positive bacteria, mainly lactobacilli, were abundant even in the absence of acidosis, we studied serum concentrations and urinary excretions of D- and...

1. Papadopoulos, N. M., and Hufnagel, C. A., Evaluation of lactate dehydrogenase isoenzyme patterns in serum of patients undergoing cardiac surgery. J. Thorac. Cardiovasc. Surg. 76, 173-177 (1978). 2. McKenzie, D., Clarke, P. I., and Henderson, A. R., How accurate are lactate dehydrogenase isoenzyme estimations by the thin-layer agarose fluorescent technique? Clin. Chem. 22, 1995-1998 (1976). 3...

1. Papadopoulos, N. M., and Hufnagel, C. A., Evaluation of lactate dehydrogenase isoenzyme patterns in serum of patients undergoing cardiac surgery. J. Thorac. Cardiovasc. Surg. 76, 173-177 (1978). 2. McKenzie, D., Clarke, P. I., and Henderson, A. R., How accurate are lactate dehydrogenase isoenzyme estimations by the thin-layer agarose fluorescent technique? Clin. Chem. 22, 1995-1998 (1976). 3...