Cited by 68Renin-Angiotensin System StudiesVitamin D Research StudiesHormonal Regulation and Hypertension

Vitamin D3 Therapy Corrects the Tissue Sensitivity to Angiotensin II Akin to the Action of a Converting Enzyme Inhibitor in Obese Hypertensives: An Interventional Study

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Vaidya, Anand, Sun, Bei, Larson, Carol, Forman, John P., Williams, Jonathan S.·2012·The Journal of Clinical Endocrinology & Metabolism

Abstract

Context: Vitamin D deficiency and obesity are associated with increased tissue renin-angiotensin system (RAS) activity. Objective: The objective of the study was to evaluate whether vitamin D3 therapy in obesity reduces tissue-RAS activity, as indicated by an increase in tissue sensitivity to angiotensin II (AngII). Participants: Participants included obese subjects with hypertension and 25-hydroxyvitamin D less than 25 ng/ml. Design: Subjects were studied before and after 1 month of vitamin D3 15,000 IU/d, while in dietary sodium balance, and off all interfering medications. Fourteen subjects successfully completed all study procedures. Setting: The study was conducted at a clinical research center. Outcome Measures: At each study visit, tissue sensitivity to AngII was assessed by measuring renal plasma flow (RPF), mean arterial pressure (MAP), and adrenal secretion of aldosterone during an infusion of AngII. Subjects were then given captopril, and a second AngII infusion to evaluate the effect of captopril on tissue-RAS activity. Results: Vitamin D3 therapy increased 25-hydroxyvitamin D (18 to 52 ng/ml) and basal RPF (+5%) and lowered supine MAP (−3%) (all P < 0.01). There was a greater decline in RPF and higher stimulation of aldosterone with AngII infusion after vitamin D3 therapy (both P < 0.05). As anticipated, captopril increased the renal-vascular, MAP, and adrenal sensitivity to AngII, but this effect was much smaller after vitamin D3 therapy, indicating that vitamin D3 therapy corrected the tissue sensitivity to AngII akin to captopril. Conclusions: Vitamin D3 therapy in obese hypertensives modified RPF, MAP, and tissue sensitivity to AngII similar to converting enzyme inhibition. Whether chronic vitamin D3 therapy abrogates the development of diseases associated with excess RAS activity warrants investigation.

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Authors
Vaidya, A., Sun, B., Larson, C., Forman, J. P., & Williams, J. S.
Affiliations
  • Brigham and Women's Hospital (US)
  • Division of Endocrinology, Diabetes, and Hypertension (A.V., B.S., C.L., J.S.W.), Boston, Massachusetts 02115
Corresponding author
Vaidya, Anand
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2012-07-01
Volume
97
Issue
7
Pages
2456-2465
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2061737727
Cited by
68
References
51
Citations by year
2025: 4 · 2024: 1 · 2023: 3 · 2022: 6 · 2021: 2 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 5 · 2016: 4 · 2015: 5 · 2014: 6 · 2013: 14 · 2012: 1
FWCI
5.28
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Brigham and Women's Hospital (M01 RR02635)
  • Harvard Catalyst (UL1-RR025758, RR025758)
  • National Institutes of Health (RR‐02635)
  • American Medical Association Foundation
  • National Heart, Lung, and Blood Institute (K23HL08236-03, F32HL104776, T32HL007609, P50HL055000, K23HL111771)
  • U.S. National Library of Medicine (U54LM008748)
  • National Center for Research Resources (UL1RR025758, M01RR002635)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Vitamin D Research Studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
Keywords
vitamin D3 supplementation, angiotensin II sensitivity, tissue renin-angiotensin system, obesity, hypertension, 25-hydroxyvitamin D, captopril, aldosterone secretion, renal plasma flow, mean arterial pressure, ACE inhibitors
MeSH terms
Adult, Angiotensin II, Angiotensin-Converting Enzyme Inhibitors, Antihypertensive Agents, Captopril, Cholecalciferol, Drug Resistance, Drug Synergism, Female, Humans, Hypertension, Male, Middle Aged, Obesity, Vitamin D Deficiency, Renal Plasma Flow

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