Intervention Study of Vitamin D Supplementation to Prevent Cardiovascular Disease
Study of Vitamin D Deficiency on Cardiovascular Disease and the Effect of Vitamin D Supplementation
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
This is a 9 months, randomized, single center, open-label, parallel-group study to compare the efficacy and safety parameters of vitamin D supplementation in vitamin D deficiency subjects in China.
Eligibility for participation will be determined by medical history, physical examination, and laboratory results obtained during a screening visit. About 300 subjects with vitamin D insufficiency or deficiency will be included in this study. All subjects will be given informed consent before starting any examination and test. The following data of all subject will be collected: liver and kidney function, HbA1c, fasting blood glucose, fasting lipid profile, serum calcium, serum phosphate, parathyroid hormone, 25-hydroxy vitamin D(25OHD), serum procollagen type I N propeptide, serum C-terminal telopeptide of type I collagen, s-CTX and muscle power and balance.
After baseline data are collected, eligible subjects will be randomized into each group at a 1:1 ratio (150 for control group and 150 for vitamin D supplementation group, less than 20% drop-off rate is acceptable for this study). The initial vitamin D doses will be based on 25OHD levels at basis, and this dosage may be changed according be the level of 25OHD until the end of this study.
All subjects in the control group will be followed every half year. All subjects in the vitamin D group will be followed by visiting clinic, and will be titrated their doses. Dose adjustment should be aimed at achieving the following 25OHD targets: 30ng/ml. If above 25OHD target has not been achieved, vitamin D dose should be adjusted. Clinic visit will be conducted 3 months later to collect information, such as serum calcium, 25OHD and adverse events.
Complicated examinations will be repeated again after 9 months treatments for both groups, including physical examination, liver and kidney function, HbA1c, fasting blood glucose, fasting lipid profile, serum calcium, serum phosphate, parathyroid hormone, 25-hydroxy vitamin D(25OHD), serum procollagen type I N propeptide, serum C-terminal telopeptide of type I collagen, s-CTX and muscle power and balance. Data will be collected and analyzed.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
Beijing
-
Beijing, Beijing, Kina, 100853
- PLA General Hospital
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Informed consent obtained before any trial-related activities. (Trial- related activities are any procedure that would not have been performed during normal management of the subject.)
- 25OHD<30ng/ml
Exclusion Criteria:
- Severe systemic disease (including severe heart, liver, kidney and lung diseases, severe infection, mental disorder and connective tissue disease)
- Primary hyperparathyroidism, other bone disease, malabsorption and other chronic gastrointestinal disease.
- Pregnant, breast-feeding or the intention of becoming pregnant or not using adequate contraceptive measures.
- Use of systemic or inhaled glucocorticoids or other medication known to interfere with bone metabolism.
- Use of vitamin D related agents in recent 3 months.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Andet
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Aktiv komparator: vitamin D,capsule
A total of 150 subjects were recruited in the vitamin D supplementation group.
|
different doses of vitamin D supplementation
|
|
Andet: control
A total of 150 subjects were recruited in the control group.
|
kontrolgruppe
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The efficacy on serum 25(OH)VitD level
Tidsramme: 9 months
|
The change of serum 25(OH)VitD level after vitamin D supplementation
|
9 months
|
|
The efficacy on metabolic syndrome
Tidsramme: 9 months
|
The change of metabolic syndrome after vitamin D supplementation
|
9 months
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The efficacy on bone biomarkers
Tidsramme: 9 months
|
The change of bone biomarkers after vitamin D supplementation
|
9 months
|
|
The efficacy on blood pressure
Tidsramme: 9 months
|
The change of blood pressure after vitamin D supplementation
|
9 months
|
|
The efficacy on blood lipid
Tidsramme: 9 months
|
The change of blood lipid after vitamin D supplementation
|
9 months
|
|
The efficacy on blood glucose
Tidsramme: 9 months
|
The change of blood glucose after vitamin D supplementation
|
9 months
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Chunlin Li, M.D&Ph.D, PLA General Hospital
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- VitD301
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .