Cited by 71Diabetes Management and ResearchDiabetes and associated disordersPancreatic function and diabetes

Hypoglycemia-associated autonomic failure, counterregulatory responses, and therapeutic options in type 1 diabetes

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Rickels, Michael R.·2019·Annals of the New York Academy of Sciences

Abstract

Hypoglycemia remains a major barrier to the achievement of target levels of glycemic control for most individuals with insulin-dependent type 1 diabetes (T1D). Both the loss of β cells and an accompanying defect in the α cell response to hypoglycemia predispose patients with T1D to the development of low blood glucose. Increased glucose variability, exposure to hypoglycemia, and impaired awareness of hypoglycemia all contribute to increased risk of experiencing severe hypoglycemia, which is explained by progressive impairment in epinephrine secretion and autonomic symptom generation in response to hypoglycemia leading to defective glucose counterregulation and hypoglycemia unawareness that characterize hypoglycemia-associated autonomic failure (HAAF). Interruption of HAAF requires interfering with the mechanisms of brain adaptation to low blood glucose that affect central glucose sensing and the autonomic response to hypoglycemia, or avoidance of hypoglycemia that may allow for eventual recovery of counterregulatory and autonomic symptom responses. Strategies for hypoglycemia avoidance that include continuous glucose monitoring may reduce, but do not eliminate, clinically significant hypoglycemia, with ongoing counterregulatory defects and impaired awareness of hypoglycemia. Complete avoidance of hypoglycemia can be achieved following pancreatic islet transplantation and allows for the restoration of counterregulatory and autonomic symptom responses that evidences the potential for reversing HAAF in T1D.

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  • In people with diabetes, an episode of severe hypoglycemia increases the risk for a subsequent event, partly because of impaired counterregulation.

    “In people with diabetes, it is well established that an episode of severe hypoglycemia increases the risk for a subsequent event, partly because of impaired counterregulation (109).”

    From 16. Diabetes Care in the Hospital: Standards of Care in Diabetes—2026 (2026) · cites this paper as [109]

    In “Mechanisms for the development of hypoglycemia in T1D” (page unavailable), the paper says that people with type 1 diabetes who have both impaired hypoglycemia awareness and a prior severe episode are at substantially increased risk of a future severe episode. “Mechanisms for HAAF in T1D” explains that repeated hypoglycemia blunts counterregulatory defenses. The claim omits the impaired-awareness qualifier, treats a single severe episode as sufficient, and extends the finding beyond type 1 diabetes. (LLM, conf=0.85)

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Authors
Rickels, M. R.
Affiliations
Hospital of the University of Pennsylvania (US)
Corresponding author
Rickels, Michael R.
Venue
Annals of the New York Academy of Sciences
Publisher
Wiley
Published
2019-08-06
Volume
1454
Issue
1
Pages
68-79
ISSN
  • 0077-8923 (ISSN-L)
  • 1749-6632
OpenAlex
W2966077489
Cited by
71
References
98
Citations by year
2026: 10 · 2025: 9 · 2024: 12 · 2023: 9 · 2022: 11 · 2021: 12 · 2020: 6 · 2019: 2
FWCI
1.19
Type
journal article
Language
en
Open access
Locations
  • Annals of the New York Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01dk091331-10)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01-DK-091331)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
Keywords
hypoglycemia-associated autonomic failure, type 1 diabetes, hypoglycemia, counterregulatory response, hypoglycemia unawareness, epinephrine secretion, autonomic symptoms, beta cell destruction, glycemic variability, continuous glucose monitoring, islet transplantation
MeSH terms
Autonomic Nervous System, Diabetes Mellitus, Type 1, Humans, Hypoglycemia, Islets of Langerhans Transplantation

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