Longitudinal Study of Patients Following Long Bone Fracture
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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
Condition | Intervention |
---|---|
Vitamin D Long Bone Fracture |
Other: No intervention |
Study Type: | Observational |
Study Design: | Observational Model: Cohort Time Perspective: Prospective |
Official Title: | Longitudinal Study of Vitamin D Metabolism and Bone Healing in Adult Patients With Recent Long Bone Fracture |
- Serum concentration of 24,25-dihyroxyvitamin D at 5-14 days post cross sectional long bone or clavicle fracture, compared with baseline. [ Time Frame: 5-14 days post fracture ] [ Designated as safety issue: No ]
- Serum concentrations of vitamin D metabolites (including 1,25-dihydroxyvitamin D and 25-hydroxyvitamin D) and markers of bone healing [ Time Frame: Baseline, 5-14 days, and 4-10 weeks post fracture ] [ Designated as safety issue: No ]
- Peripheral blood expression of genes encoding enzymes in the vitamin D metabolic pathway. [ Time Frame: Baseline, 5-14 days, and 4-10 weeks post fracture ] [ Designated as safety issue: No ]
Biospecimen Retention: Samples With DNA
Whole blood samples will be retained
Estimated Enrollment: | 100 |
Study Start Date: | March 2010 |
Estimated Study Completion Date: | October 2010 |
Estimated Primary Completion Date: | October 2010 (Final data collection date for primary outcome measure) |
Groups/Cohorts | Assigned Interventions |
---|---|
Long bone fracture
Patients presenting to accident and emergency during the study period with long bone or clavicle fracture
|
Other: No intervention
No intervention
|
Ages Eligible for Study: | 16 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Sampling Method: | Probability Sample |
Patients presenting to the Accident and Emergency Department, Royal London Hospital, Whitechapel with a long bone or clavicle fracture
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
Contact: Adam D Briggs, MA BM BCh | 07765073857 | adambriggs@doctors.org.uk |
United Kingdom | |
The Royal London Hospital | Recruiting |
London, United Kingdom, E1 1BB | |
Contact: Tim Harris, BM BS 02073777000 tim.harris@bartsandthelondon.nhs.uk | |
Principal Investigator: Tim Harris, BMBS | |
Sub-Investigator: Adam Briggs, BM BCh | |
Sub-Investigator: Anisa Nasir, BM BS | |
Sub-Investigator: Robert Hughes, BM BCh |
Study Director: | Adrian Martineau, MRCP | Queen Mary University of London |
Principal Investigator: | Tim Harris, BM BS | Barts and the London NHS Trust |
No publications provided
Responsible Party: | Dr Tim Harris, Barts and the London NHS Trust |
ClinicalTrials.gov Identifier: | NCT01170572 History of Changes |
Other Study ID Numbers: | 007076, 10/H0805/6 |
Study First Received: | July 26, 2010 |
Last Updated: | February 22, 2011 |
Health Authority: | United Kingdom: Research Ethics Committee |
Additional relevant MeSH terms:
Fractures, Bone Wounds and Injuries |
ClinicalTrials.gov processed this record on October 17, 2012