Challenges in Modelling Hypoglycaemia-Associated Autonomic Failure: A Review of Human and Animal Studies
Open accessAbstract
Recurrent insulin-induced hypoglycaemia is a major limitation to insulin treatment in diabetes patients leading to a condition called hypoglycaemia-associated autonomic failure (HAAF). HAAF is characterised by reduced sympathoadrenal response to subsequent hypoglycaemia thereby predisposing the patients to severe hypoglycaemia that can lead to coma or even death. Despite several attempts being made, the mechanism of HAAF is yet to be clearly established. In order for the mechanism of HAAF to be elucidated, establishing a human/animal model of the phenomenon is the foremost requirement. Several research groups have attempted to reproduce the phenomenon in diabetic and nondiabetic humans and rodents and reported variable results. The success of the phenomenon is marked by a significant reduction in plasma adrenaline response to subsequent hypoglycaemic episode relative to that of the antecedent hypoglycaemic episode. A number of factors such as the insulin dosage, route of administration, fasting conditions, blood sampling methods and analyses, depth, duration, and number of antecedent hypoglycaemic episodes can impact the successful reproduction of the phenomenon and thus have to be carefully considered while developing the protocol. In this review, we have outlined the protocols followed by different research groups to reproduce the phenomenon in diabetic and nondiabetic humans and rodents including our own observations in rats and discussed the factors that have to be given careful consideration in reproducing the phenomenon successfully.
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The physiological counterregulatory response to hypoglycaemia is organised hierarchically, with hormone responses usually preceding symptomatic awareness and autonomic responses preceding neuroglycopenic responses.
“The physiological counterregulatory response to hypoglycaemia is reported to be organised hierarchically, with hormone responses usually preceding symptomatic awareness and autonomic responses preceding neuroglycopenic responses.”
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“It should be emphasised that the HAAF phenomenon is distinct from the classic diabetic autonomic neuropathy, a common complication of diabetes [53].”
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“Another challenge is that the glycaemic threshold in diabetic subjects might have been reset to a lower blood glucose level due to previous recurrent hypoglycaemic episodes [57, 58].”
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Verhulst, C. E. M., Fabricius, T. W., Teerenstra, S., Kristensen, P. L., Tack, C. J., McCrimmon, R. J., Heller, S., Evans, M. L., Amiel, S. A., Pedersen-Bjergaard, U., et al. (2022) · Diabetologia · doi:10.1007/s00125-022-05749-8 · Cited by 34 · see citing works
Lontchi-Yimagou, E., Aleksic, S., Hulkower, R., Gospin, R., Goyal, A., Kuo, B., Mitchell, W. G., You, J. Y., Upadhyay, L., Carey, M., et al. (2020) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/clinem/dgaa539 · Cited by 17 · see citing works
Potential approaches to prevent hypoglycemia-associated autonomic failure
Lontchi-Yimagou, E., You, J. Y., Carey, M., Gabriely, I., Shamoon, H., & Hawkins, M. (2018) · Journal of Investigative Medicine · doi:10.1136/jim-2017-000582 · Cited by 12 · see citing works
- Authors
- Senthilkumaran, M., Zhou, X.-F., & Bobrovskaya, L.
- Affiliations
- University of South Australia (AU)
- Corresponding author
- Bobrovskaya, Larisa
- Venue
- International Journal of Endocrinology
- Publisher
- Wiley
- Published
- 2016
- Volume
- 2016
- Pages
- 1-13
- ISSN
- 1687-8337 (ISSN-L)
- 1687-8345
- PMC
- PMC5097810
- OpenAlex
- W2535582437
- Cited by
- 19
- References
- 9
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 4 · 2019: 2 · 2017: 2
- FWCI
- 0.20
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- International Journal of Endocrinology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- UniSA Research Outputs Repository (University of South Australia) (submittedVersion, other-oa)
- Funders
- Diabetes Australia Research Trust
- University of South Australia
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
- Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
- Health Sciences › Medicine › Surgery › Cardiovascular Syncope and Autonomic Disorders
- Keywords
- insulin-induced hypoglycemia, sympathoadrenal response, adrenaline response, rat model, human models, diabetes mellitus, fasting conditions, blood sampling
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