C-Labelling in lactate when [U-C]glucose is the sole substrate reflects labelling in glycolysis-generated pyruvate that is transformed into lactate by the reversible LDH-catalysed reaction.
For example, the role of hexokinase II (HXKII) and glucose metabolism in aerobic glycolysis is highlighted by the observation that H-19 hepatoma cells produce more lactate when glucose is used as the carbon source as compared to galactose.
Notably, both L. pentosus JH5XP5 and L. buchneri NRRL B-30929 are able to produce ethanol with similar or higher molar yields than lactate when grown on hexoses, suggesting the potential use of these strains in the bio-ethanol production from lignocellulosic biomass.
Surprisingly, despite the absence of a functioning HIF-1 pathway in the c4 cells they were able to activate glycolysis to lactate, when cultured under hypoxia, to the same extent as WT cells.
Of particular interest, the gene expression of lactate dehydrogenase (LDH), the enzyme that catalyses the interconversion of pyruvate and lactate when oxygen is absent (or in short supply), increased gradually, with fold-changes of 29-fold (at 24 dph) and 58-fold (at 33 dph) for LDH-A (P_isotig00860) and LDH-B (N_isotig20169), respectively.
Notably, the primary aim of the study was to evaluate the predictive value of blood lactate, when measured as a screening method at admission, to predict mortality in critically ill children.
The iBif452 model did not produce lactate when biomass or ATP production was optimized, while Bifidobacterium produces acetate, lactate, formate and ethanol in vivo.
For example, the organism produces a large amount of lactate when it has a rapid sugar consumption, but produces a small amount of lactate when it consumes a less preferred sugar like oligofructose [ 62].
ETCO2 on arrival was positively correlated with systolic and diastolic BP, MAP, bicarbonate, base excess and lactate when analyzed in all shock patients.
A nipple piercing could also cause a quirk in her let-down reflex, which causes a nursing mother to lactate when she hears a baby cry even if she's not breastfeeding at that moment.
