- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03348280
Vitamin D and Immune Mechanisms of Hypertension in Type 2 Diabetics (VDIM)
April 21, 2023 updated by: Washington University School of Medicine
This trial will evaluate whether a particular type of circulating white blood cell, monocytes, from type 2 diabetics with high blood pressure and vitamin D deficiency vs. sufficiency will induce hormones that increase blood pressure.
Study Overview
Status
Recruiting
Intervention / Treatment
Detailed Description
More than half of patients with type 2 diabetes mellitus develop hypertension, which doubles their risk for cardiovascular disease.
Inflammation plays a role in the development of these diseases, and monocytes, a type of white blood cell, may be critical.
This study will isolate monocytes from blood samples of patients with type 2 diabetes and high blood pressure who have either high levels of vitamin D or low levels of vitamin D, and determine what their effects are on stimulating production in kidney cells of a hormone that increases blood pressure.
Study Type
Observational
Enrollment (Anticipated)
40
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Greta Kutz
- Phone Number: 3143629532
- Email: cbernal@wustl.edu
Study Contact Backup
- Name: Amy E Riek, MD
- Phone Number: 3143629532
- Email: ariek@wustl.edu
Study Locations
-
-
Missouri
-
Saint Louis, Missouri, United States, 63110
- Recruiting
- Washington University
-
Contact:
- Carlos Bernal-Mizrachi, MD
- Phone Number: 314-362-0934
- Email: cbernal@dom.wustl.edu
-
Principal Investigator:
- Carlos Bernal-Mizrachi, MD
-
Saint Louis, Missouri, United States, 63110
- Recruiting
- Barnes-Jewish & Washington University Diabetes Center
-
Contact:
- Veronica Worth
- Phone Number: 314-362-0934
-
-
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
25 years to 80 years (Adult, Older Adult)
Accepts Healthy Volunteers
N/A
Sampling Method
Non-Probability Sample
Study Population
T2DM patients with hypertension
Description
Inclusion Criteria:
- Type 2 diabetes (T2DM)
- Age: 25-80 years old
- Vitamin 25(OH)D3 levels <20 or >30 ng/ml.
- HbA1c: 5.5%-9.5%
- Blood Pressure: <160/100 mm Hg on BP lowering medications and
- Blood Pressure: >120/80 to 160/100 mmHg without BP lowering medications
Exclusion Criteria:
- Recent weight loss of more than 5% within 3 months prior to screening
- Current Pregnancy
- Hypercalcemia
- Previous heart attack and stroke
- Heart failure
- Atrial fibrillation
- Heavy alcohol consumption
- Extreme diets (Atkins, South Beach)
- Chronic renal failure: stage 4 or worse
- >2 + proteinuria on urine sample
- Chronic diseases known to affect immunity
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 |
---|---|
Vitamin D Deficient
Type 2 diabetics with high blood pressure and 25-hydroxyvitamin D levels of <20 ng/ml
|
Blood will be drawn to isolate monocytes after 2 weeks off of blood pressure lowering medications.
|
Vitamin D Sufficient
Type 2 diabetics with high blood pressure and 25-hydroxyvitamin D levels of >30 ng/ml
|
Blood will be drawn to isolate monocytes after 2 weeks off of blood pressure lowering medications.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Renin production by monocytes
Time Frame: 2 weeks
|
Blood will be collected for isolation of monocytes.
These cells will then be cultured to determine whether there is monocyte stimulation of a hormone that induces high blood pressure (renin) in kidney cells.
|
2 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Renin production by monocyte media
Time Frame: 2 weeks
|
Blood will be collected for isolation of monocytes.
The media from these cells will then be added to culture to determine whether there is stimulation of a hormone that induces high blood pressure (renin) in kidney cells.
|
2 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: Carlos Bernal-Mizrachi, MD, Washington University School of Medicine
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)
September 1, 2017
Primary Completion (Anticipated)
December 31, 2023
Study Completion (Anticipated)
December 31, 2023
Study Registration Dates
First Submitted
October 23, 2017
First Submitted That Met QC Criteria
November 15, 2017
First Posted (Actual)
November 20, 2017
Study Record Updates
Last Update Posted (Actual)
April 25, 2023
Last Update Submitted That Met QC Criteria
April 21, 2023
Last Verified
April 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 201707063
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
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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