Cited by 173Diabetes Management and ResearchPancreatic function and diabetesAdrenal Hormones and Disorders

Role of cortisol in the pathogenesis of deficient counterregulation after antecedent hypoglycemia in normal humans

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Davis, S N, Shavers, C, Costa, F, Mosqueda-Garcia, R·1996·Journal of Clinical Investigation

Abstract

The aim of this study was to determine the role of increased plasma cortisol levels in the pathogenesis of hypoglycemia-associated autonomic failure. Experiments were carried out on 16 lean, healthy, overnight fasted male subjects. One group (n = 8) underwent two separate, 2-d randomized experiments separated by at least 2 mo. On day 1 insulin was infused at a rate of 1.5 mU/kg per min and 2 h clamped hypoglycemia (53 +/- 2 mg/dl) or euglycemia (93 +/- 3 mg/dl) was obtained during morning and afternoon. The next morning subjects underwent a 2-h hyperinsulinemic (1.5 mU/kg per min) hypoglycemic (53 +/- 2 mg/dl) clamp study. In the other group (n = 8), day 1 consisted of morning and afternoon 2-h clamped hyperinsulinemic euglycemia with cortisol infused to stimulate levels of plasma cortisol occurring during clamped hypoglycemia (53 mg/dl). The next morning (day 2) subjects underwent a 2-h hyperinsulinemic hypoglycemic clamp identical to the first group. Despite equivalent day 2 plasma glucose and insulin levels, steady state epinephrine, norepinephrine, pancreatic polypeptide, glucagon, ACTH and muscle sympathetic nerve activity (MSNA) values were significantly (R < 0.01) blunted after day 1 cortisol infusion compared to antecedent euglycemia. Compared to day 1 cortisol, antecedent hypoglycemia produced similar blunted day 2 responses of epinephrine, norepinephrine, pancreatic polypeptide and MSNA compared to day 1 cortisol. Antecedent hypoglycemia, however, produced a more pronounced blunting of plasma glucagon, ACTH, and hepatic glucose production compared to day 1 cortisol. We conclude that in healthy overnight fasted men (a) antecedent physiologic increases of plasma cortisol can significantly blunt epinephrine, norepinephrine, glucagon, and MSNA responses to subsequent hypoglycemia and (b) these data suggest that increased plasma cortisol is the mechanism responsible for antecedent hypoglycemia causing hypoglycemia associated autonomic failure.

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  • Previous observations show that cortisol concentrations increase from baseline during hyperinsulinemic euglycemic clamp experiments in dogs and humans.

    “The finding that supraphysiological hyperinsulinemia acutely stimulates HPA secretory activity during euglycemia agrees with previous observations that cortisol concentrations increase from baseline during hyperinsulinemic euglycemic clamp experiments in dogs (19) and in humans (20, 21).”
  • Recent antecedent hypoglycemic episodes cause a defective counterregulation by reducing epinephrine levels.

    “The concept of hypoglycemia unawareness also includes that recent antecedent hypoglycemic episodes cause a defective counterregulation by reducing epinephrine levels.”
  • A prior elevation of cortisol levels and recurrent hypoglycemia lead to an attenuation of counterregulatory response to subsequent hypoglycemia.

    “A prior elevation of cortisol levels and recurrent hypoglycemia lead to an attenuation of counterregulatory response to subsequent hypoglycemia.”
  • After recent antecedent hypoglycemia, epinephrine levels are significantly reduced.

    “After recent antecedent hypoglycemia, epinephrine levels are significantly reduced ( Figure 2 ) [ 19 , 30 ].”

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Authors
Davis, S. N., Shavers, C., Costa, F., & Mosqueda-Garcia, R.
Affiliations
Vanderbilt University (US)
Venue
Journal of Clinical Investigation
Published
1996-08-01
Volume
98
Issue
3
Pages
680-691
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2073955935
Cited by
173
References
63
Citations by year
2026: 3 · 2024: 1 · 2023: 1 · 2022: 5 · 2021: 2 · 2020: 4 · 2019: 2 · 2018: 3 · 2017: 5 · 2016: 2 · 2015: 3 · 2014: 3 · 2013: 7 · 2012: 3
FWCI
2.68
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01dk045369-05, 3p60am020593-07s1)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK 45369)
  • National Center for Research Resources (M01RR000095, M01-RR-00095)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
cortisol, hypoglycemia-associated autonomic failure, epinephrine, norepinephrine, glucagon, ACTH, pancreatic polypeptide, muscle sympathetic nerve activity, hepatic glucose production, hyperinsulinemic hypoglycemic clamp
MeSH terms
Adrenocorticotropic Hormone, Adult, Autonomic Nervous System Diseases, Glucagon, Glucose, Humans, Hydrocortisone, Hypoglycemia, Insulin, Male, Muscles

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