OsteoporosisNCT01910142
Effect of Nutrition on Bone Metabolism as Assessed by 41Ca
A study testing vitamin K and calcium in people with Osteoporosis, run by TNO.
Trial summary
The present study aims to develop a technique based on a single dose of a calcium isotope, which enables to determine the effect of a nutritional intervention on bone calcium metabolism. For this purpose nutritional interventions with calcium, vitamin D and vitamin K will be applied in postmenopausal women. Read more about this study
- Who is it for?
- Ages 50 to 68 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Osteoporosis
- What is being tested?
- vitamin K and calcium
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 12 participants
- Where
- No sites listed yet
- Study dates
- Nov 2008to Aug 2009
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 50 to 68 years
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Healthy as assessed by the
- health and lifestyle questionnaire,
- physical examination
- results of the pre-study laboratory tests
- Females aged 50-68 years at Day 01 of the study
- Relatively low calcium intake as assessed by dairy intake questionnaire
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- Body Mass Index (BMI) < 30 kg/m2
- Postmenopausal as confirmed by Follicle stimulating hormone (FSH) and oestradiol (E2) blood levels (FSH > 40IU/L, E2 < 70 pg/mL)
- Normal Dutch eating habits
- Voluntary participation
- Having given written informed consent
- Willing to comply with the study procedures
- Appropriate veins for blood sampling/cannula insertion according to TNO
- Willing to accept use of all nameless data, including publication, and the confidential use and storage of all data for at least 15 years
- Willing to accept the disclosure of the financial benefit of participation in the study to the authorities concerned.
Who cannot join
- Participation in any clinical trial including blood sampling and/or administration of substances up to 90 days before Day 01 of this study
- Participation in any non-invasive clinical trial up to 30 days before Day 01 of this study, including no blood sampling and/or oral, intravenous, inhalatory administration of substances
- Having a history of medical or surgical events that may significantly affect the study outcome, including cardiovascular disease or hypertension and gastrointestinal disease
- Prescribed medication, including hormone replacement therapy (within 6 months before start of the study) and anticoagulant medication.
- Reported intolerance for dairy products
- Not willing to stop the use of Boerenkarnemelk and cheese of the following Dutch brands: Emmenthaler, Gruyere, Leer/Maasdammer
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- Alcohol consumption > 21 units/week
- Not willing to stop use of supplements containing minerals or vitamins
- Reported unexplained weight loss or gain of > 2 kg in the month prior to the pre-study screening
- Reported slimming or medically prescribed diet
- Reported vegan, vegetarian or macrobiotic
- Recent blood donation (<1 month prior to the start of the study)
- Not willing to give up blood donation during the study.
- Personnel of TNO Quality of Life, their partner and their first and second degree relatives
- Not having a general practitioner
- Not willing to accept information-transfer concerning participation in the study, or information regarding her health, like laboratory results, findings at anamnesis or physical examination and eventual adverse events to and from her general practitioner.
About this study
Official title: The Effect of Nutritional Intervention on Bone Metabolism as Assessed by 41Ca and Modeling; Proof of Concept
The present study aims to develop a technique based on a single dose of a calcium isotope, which enables to determine the effect of a nutritional intervention on bone calcium metabolism. For this purpose nutritional interventions with calcium, vitamin D and vitamin K will be applied in postmenopausal women. Treatment effects will be determined by the urinary excretion of the calcium isotope and related to classical bone markers.
Read the detailed description
In the present proposal a method is described that may enable studying the effect of nutrition on bone calcium turnover far more accurate, within a shorter time frame and therefore less intensive for the volunteers in clinical studies as compared to presently existing methods. This method will enable screening for promising food concepts for combating osteoporosis within a relatively short time. Recent developments show that use of the nuclide 41Calcium (41Ca) and measurement by accelerator mass spectrometry (AMS) has great potential in measuring effects on bone level within a relatively short period of time. When introducing a diet change (intervention) the bone metabolism of calcium may change resulting in a changed 41Ca-signal in the urine. So far a few medication studies with osteoporotic volunteers have been performed and it appears that this ultrahigh sensitive technique may also be applicable for nutrition studies in healthy volunteers.
- Conditions
- Osteoporosis
- Being tested
- vitamin K, calcium
- Keywords
- bone metabolism
- Medical subject headings
- Osteoporosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
vitamin KDietary supplement
A calcium product will be given either with or without vitamin K. Each intervention will last for 5 weeks, each followed by a 5 week wash-out. The first intervention will start about 4 months after inclusion and the single 41Ca bolus.
calciumDietary supplement
| Study group | Role | What they receive |
|---|---|---|
| calcium supplement with vitamin K | Active comparator | Milk product supplying about 420 mg Ca and 7.5 μg vitamin D3 and 100 μg vitamin K. Additional 200 mg calcium in the form of carbonate Receives: Dietary Supplement: vitamin K; Dietary Supplement: calcium |
| calcium supplement without vitamin K | Placebo comparator | Milk product supplying about 420 mg Ca and 7.5 μg vitamin D3. no vitamin K. Additional 200 mg calcium in the form of carbonate Receives: Dietary Supplement: calcium |
What is being measured
The primary outcome is the main question the study is designed to answer.
urinary 41calcium excretion
Urine is collected for measurement of 41Ca. The concentration change of 41Ca during the intervention period indicates the efficacy of the intervention.
Measured: on study day numbers: 36, 71, 106, 113, 120, 127, 134, 141, 148, 155, 162, 169, 176, 183, 190, 197, 204, 211, 218, 225, 232, 239, 246, 253, 260, 267, 274, 281, 288
Secondary outcomes (1)
commonly accepted biomarkers for bone metabolism
Plasma osteocalcin and urinary deoxypyridinolin/creatinin ratio are measured as traditional markers for bone accretion and bone resorption respectively. These are the most commonly used biomarkers for bone metabolism.
Measured: on study day numbers: 148, 183, 218, 253, 288
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Jul 2013 (estimated)
- Study startNov 2008
- Primary completionAug 2009
- Study completionAug 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for OsteoporosisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- TNO
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Henk FJ Hendriks, TNO
- Investigators
- Gertruud C Bakker, PhD, Principal investigator, TNO
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01910142
- Sponsor's protocol ID
- 8145
- Status last verified
- Jul 2013
- First submitted
- 9 Apr 2010
- Last updated
- 29 Jul 2013
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 Jul 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Nutritional Intervention on Bone Metabolism as Assessed by 41Ca and Modeling; Proof of Concept
- ClinicalTrials.gov ID
- NCT01910142
- Acronym / sponsor ID
- 8145
- Conditions
- Osteoporosis
- Keywords
- bone metabolism
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 12 participants (actual)
- Lead sponsor
- TNOUniversity, hospital or other
- Study start
- Nov 2008
- Primary completion
- Aug 2009 (actual)
- Study completion
- Aug 2009 (actual)
- First posted
- 29 Jul 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The present study aims to develop a technique based on a single dose of a calcium isotope, which enables to determine the effect of a nutritional intervention on bone calcium metabolism. For this purpose nutritional interventions with calcium, vitamin D and vitamin K will be applied in postmenopausal women. Treatment effects will be determined by the urinary excretion of the calcium isotope and related to classical bone markers.
Detailed description
In the present proposal a method is described that may enable studying the effect of nutrition on bone calcium turnover far more accurate, within a shorter time frame and therefore less intensive for the volunteers in clinical studies as compared to presently existing methods. This method will enable screening for promising food concepts for combating osteoporosis within a relatively short time. Recent developments show that use of the nuclide 41Calcium (41Ca) and measurement by accelerator mass spectrometry (AMS) has great potential in measuring effects on bone level within a relatively short period of time. When introducing a diet change (intervention) the bone metabolism of calcium may change resulting in a changed 41Ca-signal in the urine. So far a few medication studies with osteoporotic volunteers have been performed and it appears that this ultrahigh sensitive technique may also be applicable for nutrition studies in healthy volunteers.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| calcium supplement with vitamin K | Active comparator | Dietary Supplement: vitamin K, Dietary Supplement: calciumMilk product supplying about 420 mg Ca and 7.5 μg vitamin D3 and 100 μg vitamin K. Additional 200 mg calcium in the form of carbonate |
| calcium supplement without vitamin K | Placebo comparator | Dietary Supplement: calciumMilk product supplying about 420 mg Ca and 7.5 μg vitamin D3. no vitamin K. Additional 200 mg calcium in the form of carbonate |
Who may qualify
- Ages
- 50 to 68 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (15 listed)
- Healthy as assessed by the
- Females aged 50-68 years at Day 01 of the study
- Relatively low calcium intake as assessed by dairy intake questionnaire
- Body Mass Index (BMI) < 30 kg/m2
- Postmenopausal as confirmed by Follicle stimulating hormone (FSH) and oestradiol (E2) blood levels (FSH > 40IU/L, E2 < 70 pg/mL)
Key exclusion criteria (16 listed)
- Participation in any clinical trial including blood sampling and/or administration of substances up to 90 days before Day 01 of this study
- Participation in any non-invasive clinical trial up to 30 days before Day 01 of this study, including no blood sampling and/or oral, intravenous, inhalatory administration of substances
- Having a history of medical or surgical events that may significantly affect the study outcome, including cardiovascular disease or hypertension and gastrointestinal disease
- Prescribed medication, including hormone replacement therapy (within 6 months before start of the study) and anticoagulant medication.
- Reported intolerance for dairy products
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| vitamin KA calcium product will be given either with or without vitamin K. Each intervention will last for 5 weeks, each followed by a 5 week wash-out. The first intervention will start about 4 months after inclusion and the single 41Ca bolus. | Dietary supplement | calcium supplement with vitamin K |
| calcium | Dietary supplement | calcium supplement with vitamin K, calcium supplement without vitamin K |
Primary outcome
urinary 41calcium excretion
Time frame: on study day numbers: 36, 71, 106, 113, 120, 127, 134, 141, 148, 155, 162, 169, 176, 183, 190, 197, 204, 211, 218, 225, 232, 239, 246, 253, 260, 267, 274, 281, 288
Urine is collected for measurement of 41Ca. The concentration change of 41Ca during the intervention period indicates the efficacy of the intervention.
1 secondary outcome
commonly accepted biomarkers for bone metabolism
Time frame: on study day numbers: 148, 183, 218, 253, 288
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Jul 2013.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Gertruud C Bakker, PhD principal investigator
TNO
Questions about this trial
What is this clinical trial studying?
A study testing vitamin K and calcium in people with Osteoporosis, run by TNO.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 15 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Jul 2013. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
urinary 41calcium excretion (time frame: on study day numbers: 36, 71, 106, 113, 120, 127, 134, 141, 148, 155, 162, 169, 176, 183, 190, 197, 204, 211, 218, 225, 232, 239, 246, 253, 260, 267, 274, 281, 288). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jul 2013.