We updated the design of this site on September 25th. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu

Vitamin D Deficiency: Bone Loss and Vascular Dysfunction

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00235586
First Posted: October 10, 2005
Last Update Posted: September 20, 2007
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
National Osteoporosis Foundation
Information provided by:
University of Kansas Medical Center
  Purpose
To learn if there is a connection between low vitamin D level and hardening of the arteries.

Condition Intervention
Postmenopausal Women Procedure: 10 vit. D deficient subjects take vit. D for 3 months.

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Vitamin D Deficiency: Bone Loss and Vascular Dysfunction

Resource links provided by NLM:


Further study details as provided by University of Kansas Medical Center:

Primary Outcome Measures:
  • to determine if differences exist in vascular compliance and carotid artery intima media thickness between individuals with normal and low vitamin D levels
  • to evaluate correlation of markers of vascular disease and boen disease between individuals with normal and low vitamin D
  • to quantify the effect of Vitamin D replacement on vascular compliance and markers of bone loss and vascular disease.

Secondary Outcome Measures:
  • Vitamin D at the end of 3 months of supplementation.

Estimated Enrollment: 40
Study Start Date: April 2004
Study Completion Date: September 2007
Detailed Description:
Osteoporosis and vascular disease are two of the most common disorders affecting postmenopausal women. A potential association, beyond aging, has long been speculated. Our previous study revealed evidence of loss of vascular compliance in postmenopausal women with lower bone density, suggesting women with lower bone density had "stiffer" blood vessels. This proposal further investigates that association and a potential role of vitamin D deficiency as a possible common link between both bone loss and "hardening of the arteries".
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   50 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Females ages 50-70 with ability to give informed consent
  • One year past last menstrual period
  • 20 women with Vitamin D levels < 15 mg/ml
  • 20 women with Vitamin D levels > 30 mg/ml

Exclusion Criteria:

  • women receiving hormone replacement therapy
  • women receiving medication known to effect vascular compliance, including anti-hypertension medications
  • subjects receiving therapy for osteoporosis
  • hyperthyroidism
  • untreated hypothyroidism
  • history of metabolic bone disease
  • current or previous use of medications known to accelerate bone loss
  • chronic liver disease
  • chronic renal disease
  • diabetes mellitus
  • obesity, BMI > 24
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00235586


Locations
United States, Kansas
University of Kansas Medical Center
Kansas City, Kansas, United States, 66160
Sponsors and Collaborators
University of Kansas
National Osteoporosis Foundation
Investigators
Principal Investigator: Leland Graves, III, MD University of Kansas Medical Center
  More Information

ClinicalTrials.gov Identifier: NCT00235586     History of Changes
Other Study ID Numbers: 9248
First Submitted: October 6, 2005
First Posted: October 10, 2005
Last Update Posted: September 20, 2007
Last Verified: September 2007

Keywords provided by University of Kansas Medical Center:
vitamin D deficiency postmenopausal women

Additional relevant MeSH terms:
Vitamin D Deficiency
Avitaminosis
Deficiency Diseases
Malnutrition
Nutrition Disorders
Vitamins
Vitamin D
Ergocalciferols
Micronutrients
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents