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Related Experiment Videos

Hypoglycemia unawareness.

J E Gerich1, M Mokan, T Veneman

  • 1Department of Medicine, University of Pittsburgh, Pennsylvania 15261.

Endocrine Reviews
|November 1, 1991
PubMed
Summary
This summary is machine-generated.

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Hypoglycemia unawareness in diabetics and non-diabetics may stem from central nervous system (CNS) adaptation, possibly triggered by frequent low blood sugar episodes. This adaptation can impair the body's counterregulatory hormone response.

Area of Science:

  • Endocrinology
  • Neuroscience
  • Metabolic Disorders

Background:

  • Hypoglycemia unawareness affects both diabetic and non-diabetic individuals.
  • The exact cause is unclear, but central nervous system (CNS) adaptation is a leading theory.
  • Autonomic neuropathy can contribute in long-standing diabetes cases.

Purpose of the Study:

  • To investigate the mechanisms behind hypoglycemia unawareness.
  • To explore the role of CNS adaptation and counterregulatory hormone responses.
  • To examine the impact of frequent hypoglycemia on awareness.

Main Methods:

  • Review of existing studies on hypoglycemia unawareness.
  • Analysis of counterregulatory hormone secretion (epinephrine, norepinephrine) during hypoglycemia.

Related Experiment Videos

  • Assessment of glycemic control (glycosylated hemoglobin) and hypoglycemia frequency.

    • Main Results:

    • Most individuals with hypoglycemia unawareness show reduced counterregulatory hormone responses.
    • Evidence suggests an increased threshold for hormone secretion activation in these patients.
    • Frequent hypoglycemia episodes may initiate CNS adaptation, leading to unawareness.

    Conclusions:

    • Central nervous system adaptation plays a significant role in hypoglycemia unawareness.
    • Impaired counterregulatory hormone responses, potentially due to frequent hypoglycemia, contribute to reduced awareness.
    • Altered catecholamine sensitivity is less likely to be the primary cause.