The Claim

In isolated hepatocytes from endurance-trained female Wistar rats, the increase in norepinephrine-stimulated gluconeogenesis is fully accounted for by a 147% higher lactate uptake (307.22 ± 44.5 vs 124.5 ± 23.9 nmol/mg protein) under maximal norepinephrine stimulation, with the molar increase in lactate uptake quantitatively explaining the increased glucose output, indicating that enhanced substrate transport, rather than increased enzymatic flux, is the primary mechanism responsible for training-induced enhancement of gluconeogenesis.

Source: Enhanced glucose production in norepinephrine and palmitate stimulated hepatocytes following endurance training

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
15score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

In female rats that were trained for endurance, their liver cells used more lactate to make glucose when stimulated, and this extra fuel use completely explains why they made more glucose—meaning the key change was how much lactate got into the cells, not how fast the cells processed it.

See the scientific wording

In isolated hepatocytes from endurance-trained female Wistar rats, the increase in norepinephrine-stimulated gluconeogenesis is quantitatively explained by a 147% higher lactate uptake (307.22 ± 44.5 vs 124.5 ± 23.9 nmol/mg protein) at maximal NE stimulation, with the molar increase in lactate uptake fully accounting for the increased glucose output, suggesting that enhanced substrate transport, rather than enzymatic flux, is the primary mechanism underlying training-induced gluconeogenic enhancement.

What the research says

1 study

  1. Study: Enhanced glucose production in norepinephrine and palmitate stimulated hepatocytes following endurance training

    The study shows that liver cells from trained rats take in more lactate when stimulated by norepinephrine, and this extra lactate fully explains the higher glucose production—just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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