Endurance Training Boosts Liver's Glucose Production
Author Information
Author(s): Sumida Ken D., Lordan Vera M., Donovan Casey M.
Primary Institution: University of Southern California
Hypothesis
Does endurance training enhance norepinephrine-stimulated gluconeogenesis in hepatocytes?
Conclusion
Endurance training significantly increases glucose production in liver cells, especially when stimulated by norepinephrine and palmitate.
Supporting Evidence
- Trained hepatocytes showed significantly greater gluconeogenic rates compared to controls.
- Maximal norepinephrine-stimulated glucose production was 86% higher in trained hepatocytes.
- Lactate uptake was significantly elevated in trained hepatocytes, accounting for increased glucose production.
- Endurance training enhanced sensitivity to norepinephrine in liver cells.
Takeaway
When rats exercise a lot, their liver gets better at making sugar, especially when they have certain chemicals in their body.
Methodology
Isolated hepatocytes from trained and untrained rats were incubated with lactate and norepinephrine to measure gluconeogenesis.
Potential Biases
Potential bias due to the lack of hormonal control in the experimental setup.
Limitations
The study did not match the estrous phase of female rats, which could affect results.
Participant Demographics
Female Wistar rats, 8 weeks old.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website