[en] Treatment of heart failure with the angiotensin receptor-neprilysin inhibitor sacubitril/valsartan improved glycemic control in individuals with type 2 diabetes. The relative contribution of neprilysin inhibition versus angiotensin II receptor antagonism to this glycemic benefit remains unknown. Thus, we sought to determine the relative effects of the neprilysin inhibitor sacubitril versus the angiotensin II receptor blocker valsartan on beta-cell function and glucose homeostasis in a mouse model of reduced first-phase insulin secretion, and whether any beneficial effects are additive/synergistic when combined in sacubitril/valsartan. High fat-fed C57BL/6J mice treated with low-dose streptozotocin (or vehicle) were followed for eight weeks on high fat diet alone or supplemented with sacubitril, valsartan or sacubitril/valsartan. Body weight and fed glucose levels were assessed weekly. At the end of the treatment period, insulin release in response to intravenous glucose, insulin sensitivity, and beta-cell mass were determined. Sacubitril and valsartan, but not sacubitril/valsartan, lowered fasting and fed glucose levels and increased insulin release in diabetic mice. None of the drugs altered insulin sensitivity or beta-cell mass, but all reduced body weight gain. Effects of the drugs on insulin release were reproduced in angiotensin II-treated islets from lean C57BL/6J mice, suggesting the insulin response to each of the drugs is due to a direct effect on islets and mechanisms therein. In summary, sacubitril and valsartan each exert beneficial insulinotropic, glycemic and weight-reducing effects in obese and/or diabetic mice when administered alone; however, when combined, mechanisms within the islet contribute to their inability to enhance insulin release.
Disciplines :
Endocrinology, metabolism & nutrition
Author, co-author :
Esser, Nathalie ; Centre Hospitalier Universitaire de Liège - CHU > > Service de diabétologie, nutrition, maladies métaboliques ; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Schmidt, Christine; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States
Barrow, Breanne M; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States
Cronic, Laura; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Hackney, Daryl J; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States
Mongovin, Stephen M; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States
Hogan, Meghan F; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Templin, Andrew T; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Castillo, Joseph J; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Hull, Rebecca L; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Zraika, Sakeneh; Research Service, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States ; Division of Metabolism, Endocrinology & Nutrition, Department of Medicine, University of Washington, Seattle, WA, United States
Language :
English
Title :
Insulinotropic Effects of Neprilysin and/or Angiotensin Receptor Inhibition in Mice.
Novartis NIH - National Institutes of Health United States Department of Veterans Affairs UW - University of Washington SFD - Société Francophone du Diabète BAEF - Belgian American Educational Foundation Fonds Baillet Latour Fonds Léon Fredericq
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