Effect of 1 Year Vitamin D or D Plus B-vitamins on Bone Markers in Elderly People (KnoVIB) (KnoVIB)

April 2, 2019 updated by: Rima Obeid, Universität des Saarlandes

Effect of 1 Year Vitamin D or D Plus B-vitamins on Bone Markers in Elderly People

The standard recommendation to prevent osteoporosis is to supplement low doses of vitamin D and calcium. Hyperhomocysteinemia has been related to increased risk of osteoporosis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The current study aimed at investigating if homocysteine-lowering effect (low doses of B-vitamins) will add any measurable beneficial effect on bone markers when added to the standard recommendations for prevention of osteoporosis.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
93

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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

  • Germany
    • Saarland
      • Homburg, Saarland, Germany, 66424
        • University of Saarland

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

50 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • age> 50 years,
  • male and female

Exclusion Criteria:

  • renal dysfunction,
  • recent stroke or coronary event within the last 3 months,
  • current cancer,
  • antifolate treatment,
  • ileum resection,
  • existing B vitamins supplementation,
  • megaloblastic anemia,
  • osteoporotic patients treated with pharmacological doses of vitamin D or antiosteoporotic drugs.

Termination criteria were:

  • indication for a high-dose vitamin B supplementation,
  • coronary or vascular event,
  • or surgical procedures during the study.

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

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Vitamin D and Calcium
a combination of dietary supplement including "all" 1200 IE Vitamin D3 plus 800 mg Calcium Carbonate
Dietary supplement: Vitamin D and Calcium

a combination of dietary supplement including "all" 1200 IE Vitamin D3 plus 800 mg Calcium Carbonate

1200 IE Vitamin D3 plus 800 mg Calcium Carbonate

Arm: Experimental: Vitamin D, Calcium, Vitamins B9, B6, B12

1200 IE Vitamin D3 plus 800 mg Calcium Carbonate plus 0,5mg Folic acid, 50 mg B6, 0,5 mg B12
Experimental: Vitamin D, Calcium, Vitamins B9, B6, B12
a combination of dietary supplement including "all" 1200 IE Vitamin D3 plus 800 mg Calcium Carbonate plus 0,5mg Folic acid, 50 mg B6, 0,5 mg B12
Dietary supplement: Vitamin D, Calcium, Vitamins B9, B6, B12
a combination of dietary supplement including "all" 1200 IE Vitamin D3 plus 800 mg Calcium Carbonate plus 0,5mg Folic acid, 50 mg B6, 0,5 mg B12

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Changes in bone formation markers
Time Frame: baseline, 6 and 12 months
Concentrations of bone formation markers in plasma [OC (ng/ml), BAP (U/L)]: are measured: if all are increased indicate enhanced bone formation
baseline, 6 and 12 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Changes in plasma choline and betaine
Time Frame: baseline and aftter 12 months
plasma choline and betaine (all µmol/L): if both increased indicate saving betaine and choline
baseline and aftter 12 months
Changes in global DNA methylation
Time Frame: baseline and after 12 months
global DNA methylation [line 1-methylation (expressed as %)]
baseline and after 12 months
Changes in gene-specific gene methylation
Time Frame: baseline and after 12 months
After isolating DNA from whole blood, changes in methylation of targeted genes is studied (expressed as %)
baseline and after 12 months
Changes in TMAO
Time Frame: baseline and after 6 and 12 months
Plasma concentrations of TMAO ((µmol/L) is measured
baseline and after 6 and 12 months
Changes in phospholipid concentration in plasma
Time Frame: baseline and after 12 months
Plasma phospholipids ((µmol/L) are measured
baseline and after 12 months
Changes in concentrations of bone resorption markers
Time Frame: baseline, 6 and 12 months
concentrations of bone resorption markers [plasma TRAP5b (U/L), urine DPD (nmol//mmol creatinine)]: if both are increased indicate enhanced bone resorption
baseline, 6 and 12 months
Changes in plasma homocysteine concentrations
Time Frame: baseline, 6 and 12 months
changes in plasma homocysteine (µmol/L) between the time points
baseline, 6 and 12 months
Changes in plasma levels of folate
Time Frame: baseline, 6 and 12 months
changes in serum and whole blood folate (nmol/L)
baseline, 6 and 12 months

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Universität des Saarlandes

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Rima Obeid, PhD, Universität des Saarlandes

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2009

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 21, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 22, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 26, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 4, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 2, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Vitamins and bone markers

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.

Clinical Trials on Nutritional Supplement Toxicity

Clinical Trials on Vitamin D and Calcium

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings