Cited by 32Hormonal Regulation and HypertensionPancreatic function and diabetesAdrenal Hormones and Disorders

Aldosterone excess may inhibit insulin secretion: A comparative study on glucose metabolism pre- and post-adrenalectomy in patients with primary aldosteronism

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Tsurutani, Yuya, Sugisawa, Chiho, Ishida, Akiko, Inoue, Kosuke, Saito, Jun, Omura, Masao, Nagasaka, Shoichiro, Nishikawa, Tetsuo·2017·Endocrine Journal

Abstract

Conflicting data have been published on the effects of aldosterone excess on glucose metabolism. Specifically, there are limited data on whether adrenalectomy in patients with aldosterone-producing adenomas (APA) can improve glucose metabolism. In this study we evaluated changes in glucose metabolism, before and after surgery for APA. The subjects were 61 patients treated with unilateral adrenalectomy, localized by adrenal venous sampling. A 75g-oral glucose tolerance test (OGTT) was performed before and 1 year after adrenalectomy. Patients with diabetes mellitus or a serum cortisol level >3 μg/dL after a 1 mg dexamethasone suppression test, were excluded. Using the 75g-OGTT data, insulin secretion and insulin resistance (or sensitivity) indices were calculated. The results showed that immunoreactive insulin levels during the OGTT increased significantly after adrenalectomy, whereas plasma glucose levels, before and after surgery, were comparable. The insulinogenic index significantly increased after surgery (0.5 [0.4-0.8] to 0.8 [0.4-1.1], p < 0.001). The disposition index remained largely unchanged (806.2 [489.4-1,138.9] to 686.6 [479.4-922.1], p = 0.25). The homeostatic model assessment of insulin resistance increased significantly (1.0 [0.6-1.5] to 1.5 [1.0-2.2], p < 0.001) and the ISImatsuda decreased significantly (6.9 [4.5-10.4] to 5.2 [3.4-7.9], p < 0.001). Changes in these indices were not correlated with changes in potassium and aldosterone levels before and after surgery. In conclusion, insulin secretion increased after adrenalectomy for APA, indicating that aldosterone excess inhibits insulin secretion. However, because of a parallel increase in insulin resistance, plasma glucose levels remained unchanged.

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Authors
Tsurutani, Y., Sugisawa, C., Ishida, A., Inoue, K., Saito, J., Omura, M., Nagasaka, S., & Nishikawa, T.
Affiliations
  • Yokohama Rosai Hospital (JP)
  • SHOWA Medical University Fujigaoka Hospital (JP)
Venue
Endocrine Journal
Published
2017
Volume
64
Issue
3
Pages
339-346
ISSN
  • 0918-8959 (ISSN-L)
  • 1348-4540
OpenAlex
W2577783334
Cited by
32
References
27
Citations by year
2026: 3 · 2025: 1 · 2024: 4 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 10 · 2019: 8 · 2018: 1
FWCI
4.10
Type
journal article
Language
en
Open access
Locations
  • Endocrine Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Health, Labour and Welfare
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
primary aldosteronism, aldosterone excess, insulin secretion, insulin resistance, adrenalectomy, aldosterone-producing adenoma, glucose metabolism, insulinogenic index, disposition index, HOMA, oral glucose tolerance test
MeSH terms
Insulin Secretion, Adrenal Cortex Neoplasms, Adrenalectomy, Adult, Aldosterone, Blood Glucose, Female, Glucose Tolerance Test, Humans, Hyperaldosteronism, Insulin, Insulin Resistance, Japan, Male, Middle Aged, Postoperative Period, Potassium, Retrospective Studies, Adrenocortical Adenoma, Insulin-Secreting Cells, Preoperative Period

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