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Microvascular Function in Primary Aldosteronism

NCT02096939 · Status: WITHDRAWN · Type: OBSERVATIONAL

Last updated 2015-08-25

No results posted yet for this study

Summary

Patients with primary aldosteronism, which is the most prevalent form of secondary hypertension, have an increased rate of cardiovascular events, compared to patients with essential hypertension, even with equal severity of hypertension. This might be partially attributed to the association of increased aldosterone levels with insulin resistance. How this relation can be explained from a pathophysiological point of view, is insufficiently established.

Recently, microvascular dysfunction has been proposed as a link between insulin resistance and hypertension. Loss of NO-mediated vasodilation is an important feature of microvascular dysfunction; in addition, an impaired insulin-mediated microvascular NO production has been suggested to underlie the reduction in insulin-stimulated glucose disposal that is characteristic of insulin-resistant states. Increased aldosterone levels are not only associated with insulin resistance, but also with endothelial dysfunction. In addition, they interfere with the vascular effects of insulin.

Therefore, the investigators hypothesize that in patients with primary aldosteronism, increased aldosterone levels induce microvascular dysfunction through reduction of NO-availability, which contributes to the development of insulin resistance, and of hypertension, in addition to the sodium-retaining effects of aldosterone.

Conditions

  • Primary Aldosteronism
  • Essential Hypertension

Interventions

PROCEDURE

Adrenal extirpation

DRUG

Antihypertensive medication

Sponsors & Collaborators

  • Maastricht University Medical Center

    lead OTHER

Principal Investigators

  • Prof. C.D.A. Stehouwer, MD, PhD · Maastricht University Hospital

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-09-30
Primary Completion
2016-04-30
Completion
2016-04-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02096939 on ClinicalTrials.gov