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Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
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Molecular mechanisms of insulin resistance

T S Pillay1, M W Makgoba

  • 1Department of Chemical Pathology, Royal Postgraduate Medical School, Hammersmith Hospital, London.

South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde
|May 18, 1991
PubMed

Insights

This review explores insulin receptor function and insulin resistance, crucial for understanding non-insulin-dependent diabetes. Advances in molecular insights offer potential for improved therapies targeting insulin signaling pathways.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Metabolic Disorders

Background:

  • Insulin resistance is a key factor in non-insulin-dependent diabetes and other metabolic disorders.
  • Understanding the insulin receptor and insulin action is critical for clinical management.
  • Recent molecular insights are advancing the study of insulin resistance.

Purpose of the Study:

  • To review recent advances in insulin receptor structure and function.
  • To correlate these advances with the clinical aspects of insulin resistance.
  • To explore the molecular basis of insulin resistance for therapeutic development.

Main Methods:

  • Review of current literature on insulin receptor signaling.
  • Analysis of molecular mechanisms underlying insulin resistance.
  • Discussion of clinical implications and therapeutic strategies.

Main Results:

  • Insulin resistance can stem from receptor-level defects, including altered phosphorylation (increased serine/threonine, decreased tyrosine).
  • Other factors contributing to receptor-mediated insulin resistance include desensitization, auto-antibodies, and inherited defects.
  • Post-receptor defects, particularly in glucose transport, and hormonal influences (e.g., amylin) also contribute to insulin resistance.

Conclusions:

  • Improved understanding of molecular mechanisms of insulin resistance can elucidate disease causation.
  • Targeting initial insulin receptor events and post-receptor defects offers potential for rational therapeutic design.
  • Further research into insulin receptor function and insulin action is vital for combating metabolic disorders.

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