ISRCTN ISRCTN91255549
DOI https://doi.org/10.1186/ISRCTN91255549
Secondary identifying numbers 17553
Submission date
04/02/2015
Registration date
04/02/2015
Last edited
08/02/2015
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Skin and Connective Tissue Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Vitamin D is essential for healthy bones. Calcium and phosphorus are essential for bone growth and also to strengthen bones and we need vitamin D to absorb these minerals. People get most of their vitamin D though exposure to sunlight. National guidance on requirements for vitamin D assume that casual exposure of limited areas of skin to summer sunlight is sufficient to avoid vitamin D deficiency. Previous studies have shown that a six week course of exposures to simulated summer sunlight while casually dressed (shorts and T-shirt) can produce adequate vitamin D levels in the majority of the UK white Caucasian population. The aim of this study is to determine if exposure of more limited areas of skin can produce a sufficient rise in vitamin D levels to avoid deficiency.

Who can participate?
Healthy white Caucasian adults, aged between 20-60.

What does the study involve?
Volunteers undergo a six week course of simulated sunlight (ultraviolet light) exposures, wearing clothes that expose small areas of skin (hands and face).

What are the possible benefits and risks of participating?
Participants will not benefit directly from taking part in this study. However, if they are found to have vitamin D deficiency their GP will be informed in order to offer advice and/or treatment. We do not expect there to be any disadvantage from taking part. Participants may experience some redness of the skin for a short while after their sunburn threshold has been tested. There may be slight discomfort and bruising following the blood sample.

Where is the study run from?
Salford Royal NHS Foundation Trust (UK)

When is the study starting and how long is it expected to run for?
November 2014 to October 2017

Who is funding the study?
European Seventh Framework Programme (Belgium)

Who is the main contact?
Mrs Joanne Osman

Contact information

Mrs Joanne Osman
Scientific

Salford Royal NHS Foundation Trust
Photobiology Unit
Salford Royal Foundation Hospital
Stott Lane
Salford
Greater Manchester
M6 8HD
United Kingdom

Study information

Study designNon-randomised; Interventional; Design type: Not specified
Primary study designInterventional
Secondary study designNon randomised study
Study setting(s)Other
Study typeTreatment
Participant information sheet Not available in web format, please use contact details to request a patient information sheet
Scientific titleAn experimental photodermatology study to examine the ability of limited skin areas to produce vitamin D
Study objectivesThe aim of this study is to determine if exposure of more limited areas of skin to simulated sunlight can produce a sufficient rise in vitamin D levels to avoid deficiency.
Ethics approval(s)University of Manchester Research Ethics Committee, 14/10/2014, ref: 14335.
Health condition(s) or problem(s) studiedTopic: Dermatology; Subtopic: Skin (all Subtopics); Disease: Dermatology
InterventionThe intervention is solar-simulated ultraviolet radiation. A dose of 1.3 SED (standard erythema dose) is given three times a week for 6 weeks. There is no control arm. Blood samples are taken at the start of each week, before the first exposure, and one 3 days after the final exposure. Follow-up will then continue with blood samples after a further 2, 4 and 6 weeks. Total duration for treatment and follow-up = 12 weeks.
Intervention typeOther
Primary outcome measureThe primary outcome measure is serum 25-hydroxyvitamin D (25(OH)D) concentration which is measured at baseline, then weekly up to 6 weeks. Further samples to be taken at weeks 8, 10 and 12. Serum 25(OH)D is measured by liquid chromatography tandem mass spectrophotometry (LC-MS/MS).
Secondary outcome measuresN/A
Overall study start date01/11/2014
Completion date31/10/2017

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
SexBoth
Target number of participantsPlanned Sample Size: 60; UK Sample Size: 60
Key inclusion criteria1. Healthy, ambulant, male and female adults aged 20-60 years
2. White Caucasian (sun-reactive skin type I-IV)
3. Willing and capable of participating to the extent and degree required by the protocol
Key exclusion criteria1. Sunbathing or sunbed use in the last 3 months
2. Taking photoactive medication
3. Taking vitamin D, fish oil or calcium supplements
4. History of skin cancer or photosensitivity disorder
5. Pregnancy/lactation
Date of first enrolment01/11/2014
Date of final enrolment31/10/2017

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Salford Royal NHS Foundation Trust
Photobiology Unit
Salford Royal Foundation Hospital
Stott Lane
Salford
Greater Manchester
M6 8HD
United Kingdom

Sponsor information

University of Manchester
University/education

Oxford Road
Manchester
M13 9PL
England
United Kingdom

ROR logo "ROR" https://ror.org/027m9bs27

Funders

Funder type

Government

Seventh Framework Programme
Government organisation / National government
Alternative name(s)
EC Seventh Framework Programme, European Commission Seventh Framework Programme, EU Seventh Framework Programme, European Union Seventh Framework Programme, FP7

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan