Longitudinal Study of Patients Following Long Bone Fracture
Longitudinal Study of Vitamin D Metabolism and Bone Healing in Adult Patients With Recent Long Bone Fracture
Studies in chickens show that blood levels of a particular form of vitamin D (called 24,25-dihydroxvitamin D) increase after bone fracture. Laboratory studies show that this form of vitamin D helps the bone healing process in chickens. The investigators want to find out whether blood levels of this form of vitamin D increase after bone fracture in humans. Previous research studies have not addressed this question. The results of this research could eventually lead to the development of new treatments to help bone healing after fracture.
Patients will be asked to take part in this study if they are aged 16 years or older and come to the Royal London Hospital with a broken bone in the arm or leg or collar bone (clavicle). They will be asked to give a 20ml (about 4 teaspoons) blood sample on three occasions: at the start of the study, at 5-14 days after the fracture; and at 4-10 weeks after the fracture. The rest of their normal care would not be affected. Follow-up blood samples will be timed to coincide with routine clinic visits which are scheduled as part of normal clinical care. Patients' vitamin D level will be measured as part of the study, and those who have a low vitamin D level will be informed about this, and advised about appropriate vitamin D supplementation. The investigators will let the patient or their GP know if any blood tests are abnormal
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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-
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London, Royaume-Uni, E1 1BB
- The Royal London Hospital
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Any cross-shaft long bone or clavicle fracture within last 12 hours
- Able to give written informed consent
- Age ≥ 16 years
- Fused physes (physiologically adult)
Exclusion Criteria:
- Taking medication affecting vitamin D metabolism - carbamazepine, phenobarbital, phenytoin or primidone
- Taking vitamin D supplement > 800 IU/day
- Abdominal visceral injury, pleural injury (except pneumothorax), spinal cord injury, or GCS < 15 at presentation to hospital
- Known Paget's disease, osteopetrosis, metastatic bone cancer, or primary bone cancer
- Current prisoners
- Currently taking part in another clinical research project
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
|
Long bone fracture
Patients presenting to accident and emergency during the study period with long bone or clavicle fracture
|
Aucune intervention
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
|---|---|
|
Serum concentration of 24,25-dihyroxyvitamin D at 5-14 days post cross sectional long bone or clavicle fracture, compared with baseline.
Délai: 5-14 days post fracture
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5-14 days post fracture
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Mesures de résultats secondaires
Mesure des résultats |
Délai |
|---|---|
|
Serum concentrations of vitamin D metabolites (including 1,25-dihydroxyvitamin D and 25-hydroxyvitamin D) and markers of bone healing
Délai: Baseline, 5-14 days, and 4-10 weeks post fracture
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Baseline, 5-14 days, and 4-10 weeks post fracture
|
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Peripheral blood expression of genes encoding enzymes in the vitamin D metabolic pathway.
Délai: Baseline, 5-14 days, and 4-10 weeks post fracture
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Baseline, 5-14 days, and 4-10 weeks post fracture
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Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Directeur d'études: Adrian Martineau, MRCP, Queen Mary University of London
- Chercheur principal: Tim Harris, BM BS, Barts and the London NHS Trust
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 007076
- 10/H0805/6 (Autre identifiant: REC number)
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