Vitamin D and Microvascular Function in Postmenopausal Women

June 2, 2022 updated by: THAYSA FERNANDES LACERDA ROCHA COSTA, Rio de Janeiro State University

Vitamin D Effects on Microvascular Function and Cardiovascular Risk Factors on Postmenopausal Women

Many observational studies have demonstrated links between serum levels of 25-hydroxyvitamin D [25(OH)D] and cardiovascular risk (CVR) factors. Microvascular dysfunction relates not only to CVR but also to metabolic disease. Since cardiovascular disease (CVD) is the leading cause of death in postmenopausal women, it would be relevant to confirm this relationship. Maybe further studies would show that the correction of hypovitaminosis D could minimize the CVR. Our objective with this clinical trail is to analyze if vitamin D status is related to microvascular function and conventional cardiovascular risk (CVR) factors in postmenopausal women. For that we enrolled, in a pilot cross-sectional study, 39 non-smokers, low CVR postmenopausal women, with less than 10 years of hypoestrogenism and associations of 25(OH)D to adiposity, blood pressure, fasting aldosterone, insulin, glucose and lipid profile, HOMA-IR, parathormone and microvascular function, assessed by laser-Doppler flowmetry at cutaneous site, were investigated.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

88

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
      • Rio De Janeiro, Brazil, 20559900
        • State University of Rio de Janeiro

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

45 years to 60 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Sampling Method

Probability Sample

Study Population

Women from the gonad outpatient clinic of the Teaching Unit Endocrinology Department at Pedro Ernesto University Hospital/University of State of Rio de Janeiro, which integrates the state network of the Unified Health System, and volunteers who may be recruited from other HUPE Services or externally.

Description

Inclusion Criteria:

Women between 45-60 years with clinical/laboratory criteria of menopause and duration of hypoestrogenism < 10 years. Menopause was spontaneous (at least one year of amenorrhea) or surgical (after bilateral oophorectomy). In hysterectomized women, ovarian failure was estimated by the history of vasomotor symptoms and serum levels of follicle-stimulating hormone (FSH) > 35 mU/mL and estradiol levels <20 pg/mL.

Exclusion Criteria:

Current smokers, body mass index (BMI) >35 kg/m², systolic BP >160 mmHg and or diastolic BP > 100 mmHg, total cholesterol >280 mg/dL, presence of T2D, renal dysfunction and or liver disease, clinical manifestations of coronary heart disease, and previous history of revascularization or cardiovascular event.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Postmenopausal women
Associations of 25(OH)D to adiposity, blood pressure, fasting aldosterone, insulin, glucose and lipid profile, HOMA-IR, parathormone and microvascular function, assessed by laser-Doppler flowmetry at cutaneous site, were investigated.
Diagnostic test: Blood samples and Microvascular function assessment evaluated through laser-Doppler flowmetry by the LASER speckle contrast analysis (LASCA) device
We enrolled 39 non-smokers, low CVR postmenopausal women, with less than 10 years of hypoestrogenism. Associations of 25(OH)D to adiposity, blood pressure, fasting aldosterone, insulin, glucose and lipid profile, HOMA-IR, parathormone and microvascular function, assessed by laser-Doppler flowmetry at cutaneous site, were investigated

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Vitamin D status and microvascular function
Time Frame: 1 day
Vitamin D status and its relation to microvascular function and conventional cardiovascular risk (CVR) factors in postmenopausal women.
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Rio de Janeiro State University

Collaborators

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Rio de Janeiro State Research Supporting Foundation (FAPERJ)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

July 4, 2019

Primary Completion (ACTUAL)

December 17, 2021

Study Completion (ACTUAL)

December 17, 2021

Study Registration Dates

First Submitted

May 31, 2022

First Submitted That Met QC Criteria

June 2, 2022

First Posted (ACTUAL)

June 7, 2022

Study Record Updates

Last Update Posted (ACTUAL)

June 7, 2022

Last Update Submitted That Met QC Criteria

June 2, 2022

Last Verified

June 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 31448514.1.0000.5282

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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