- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01060735
Vitamin D Supplementation During Pregnancy and Bone Status in Children at Birth and at One Year of Age
The Effect of Different Doses of Vitamin D Supplementation During Pregnancy on Bone and Vitamin D Status in Children at Birth and at One Year Age
Vitamin D deficiency is frequently reported in pregnant women despite recommendation of daily vitamin D supplementation of 400IU/d. Recent studies have shown that in the absence of sun exposure these doses are seldom able to achieve 25(OH)D optimal serum levels.
We hypothesize that larger doses of vitamin D are needed to be supplemented to all women during pregnancy. We hypothesize that this may have advantageous effects on maternal vitamin D and bone reserve as well on offspring vitamin D and bone status at birth and possible further on.
The aim of the present study is to compare vitamin D and bone status of infants born to mothers supplemented with 400IU/d (present recommendations) and 2000IU/d vitamin D during the third trimester of pregnancy.
Panoramica dello studio
Descrizione dettagliata
This is a prospective randomized controlled study.
120 pregnant women will be recruited at 27 weeks gestation and randomized into two treatment groups; 400IU/d or 2000IU/d vitamin D supplementation from 27 weeks until delivery.
25-hydroxyvitamin D (25OHD), parathyroid hormone (PTH), urinary calcium/creatinine and serum calcium and alkaline phosphatase (ALP) levels will be assessed in mothers at 27 weeks and at delivery.
25OHD, calcium and ALP levels, and urinary calcium/creatinine will be evaluated in offspring at birth and at one year age.
Vitamin D and calcium intake and sun exposure will be evaluated in mothers and offsprings.
Quantitative ultrasound (QUS) measurement of tibia and radius will be performed to newborns and at the age of one year.
Bone status of newborns at birth and at one year age in children will be compared between the 2 groups.
Tipo di studio
Iscrizione (Anticipato)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
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Petah Tikva, Israele, 49202
- Reclutamento
- Schneider Children's Medical Center Of Israel
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Sub-investigatore:
- Raanan Shamir, Professor
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Sub-investigatore:
- Eran Adar, MD
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Sub-investigatore:
- Moshe Hod, Professor
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Healthy pregnant women aged 20 to 40 years, of any parity status.
- Signed informed consent
Exclusion Criteria:
- Presence of diseases known to affect vitamin D status such as malabsorption states, liver and renal disorders, primary and tertiary hyperparathyroidism, granulomatous disorders
- Treatment with medications known to affect vitamin D status such as anticonvulsivants, glucocorticoids, antirejection medication and retroviral agents
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
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Sperimentale: Larger doses of vitamin D supplementation
The subjects enrolled in this arm will be supplemented during the third trimester of pregnancy with 2000IU vitamin D per day
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Vitamin D 2000iu/ day from the 27 week of pregnancy up to delivery
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Nessun intervento: Conventional vitamin D supplementation
Regular supplementation during pregnancy with 400IU vitamin D
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
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Bone status in offspring at the age of one year as assessed by tibial and radius quantitative ultrasound (QUS).
Lasso di tempo: Bone status in offsprings, assessed at the age of one year
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Bone status in offsprings, assessed at the age of one year
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Misure di risultato secondarie
Misura del risultato |
Lasso di tempo |
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Vitamin D status of mothers.
Lasso di tempo: At the start of intervention, at delivery and at the age of one year
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At the start of intervention, at delivery and at the age of one year
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Maternal health status.
Lasso di tempo: At the start of intervention, at delivery and at the age of one year
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At the start of intervention, at delivery and at the age of one year
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Infants' growth.
Lasso di tempo: At the start of intervention, at delivery and at the age of one year
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At the start of intervention, at delivery and at the age of one year
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Vitamin D status in infants.
Lasso di tempo: At the start of intervention, at delivery and at the age of one year
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At the start of intervention, at delivery and at the age of one year
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Safety of vitamin D supplementation doses.
Lasso di tempo: At the start of intervention, at delivery and at the age of one year
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At the start of intervention, at delivery and at the age of one year
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Corina Hartman, MD, Rabin Medical Center
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Anticipato)
Completamento dello studio (Anticipato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- rmc005437ctil
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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