How does the body manage glucose demand amid competing cortisol & insulin actions?

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SUMMARY

The discussion centers on the body's management of glucose demand amid the competing actions of cortisol and insulin. Cortisol initiates gluconeogenesis, particularly in the morning, leading to increased glucose levels due to liver activity. The conversation explores whether insulin production responds to this glucose rise and the implications for glycogen storage in the liver versus glucose uptake in insulin-sensitive tissues like skeletal muscle. Key insights include the role of glucagon in stimulating gluconeogenesis and the distinction between glucocorticoids and glucagon in this process.

PREREQUISITES
  • Understanding of gluconeogenesis and its regulation by hormones
  • Knowledge of insulin's role in glucose metabolism
  • Familiarity with the functions of glucagon and glucocorticoids
  • Basic concepts of glucose uptake mechanisms in skeletal muscle
NEXT STEPS
  • Research the mechanisms of insulin secretion in response to gluconeogenesis
  • Study the effects of glucagon on liver glucose production
  • Explore the role of GLP-1 in glucose metabolism and insulin response
  • Investigate the interactions between cortisol, insulin, and glucose uptake in skeletal muscle
USEFUL FOR

Endocrinologists, metabolic researchers, and healthcare professionals interested in glucose metabolism and hormonal regulation in the body.

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TL;DR
How does the body behave in terms of insulin response due to cortisol induced gluconeogenesis?
Cortisol normally initiates gluconeogenesis especially in the mornings,

1. Glucose rises due to liver gluconeogenesis.
2. Does insulin production respond to this glucose rise?
3. If it entails insulin production (due to rise in glucose), liver might store it back as glycogen leading to a futile cycle.
4. If it does not entail insulin production, the other insulin sensitive cells such as skeletal muscle cells might suffer for want of GLUT4 expression and glucose uptake.

How does the body behave (in terms of insulin response) due to cortisol induced gluconeogenesis?

How does the body ensure supply of glucose to skeletal muscle cells at the same time ensuring liver does not undergo futile glycogenesis, due to insulin response?
 
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Here's a Nature article that reports that "glucagon stimulates gluconeogenesis".
In contrast, here is a PubMed article that reports that "glucocorticoids promote gluconeogenesis in liver".
The suggestion is that unlike glucagon that can trigger gluconeogenesis, glucocorticoids are just a contributing factor.
 
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Thanks. But my question is about the insulin secretion in response to the gluconeogenesis. How insulin response would be different for instance from dietary glucose? Obviously GLP-1 would be missing. Something like that.
 

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