Effect of DrugVitaminDNCT04443387
Vitamin D Regulates the Expression of Glucocorticoid Receptors in Blood of Severe Asthmatic Patients
A study testing Vitamin D in people with Effect of Drug, run by Dubai Health Authority.
Trial summary
Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe which has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked with a decreased glucocorticoid receptors (GR) ratio (GR-α/ GR-β ratio), indicating steroid hyporesponsiveness. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Effect of Drug
- What is being tested?
- Vitamin D
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 45 participants
- Where
- No sites listed yet
- Study dates
- 1 Apr 2012to 31 Dec 2014
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Diagnosis of asthma
- age group between 18 and 65 years
- low level of 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL
Who cannot join
- smoker patients
- less than 18 years old
- patient on Vitamin D supplementation already
About this study
Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe which has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked with a decreased glucocorticoid receptors (GR) ratio (GR-α/ GR-β ratio), indicating steroid hyporesponsiveness. Using combined in silico and in vivo approaches, aimed to explore the immunomodulatory effect of VitD on asthmatic patients diagnosed with hypovitaminosis D.
Read the detailed description
Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe which has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked with a decreased glucocorticoid receptors (GR) ratio (GR-α/ GR-β ratio), indicating steroid hyporesponsiveness. Using combined in silico and in vivo approaches, the investigators aimed to explore the immunomodulatory effect of VitD on asthmatic patients diagnosed with hypovitaminosis D. Methods: In silico tools were used to identify the regulatory effect of VitD supplementation on GR genes. The investigators measured the expression levels of GR-α and the inactive isoform, GR-β, in the blood of adult asthmatics diagnosed with hypovitaminosis D before and after VitD supplementation. Moreover, the blood levels of inflammatory cytokines associated with asthma severity were determined.
- Conditions
- Effect of Drug
- Being tested
- Vitamin D, Placebo
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Vitamin DDrug
A double-blinded, randomized, placebo-controlled study of VitD supplementation on 45 asthmatics with VitD deficiency was performed. Moderate to severe asthmatics between 18 and 65 years of age who had clinician-diagnosed asthma with 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL at the screening visit were recruited at the Rashid Hospital, Dubai, U.A.E., and the Zayed Military Hospital, Abu Dhabi, U.A.E. Subjects were excluded if they had used any previous VitD supplementation, had any other respiratory diseases or co-morbid conditions or were smokers. According to the American Academy of Family Physicians guidelines, participants received 50, 000 IU of VitD orally or placebo weekly over 8 weeks. Subjects were blinded to treatment and allocated to receive a VitD dose or placebo by the randomization schedule.
PlaceboOther
A double-blinded, randomized, placebo-controlled study of VitD supplementation on 45 asthmatics with VitD deficiency was performed. Moderate to severe asthmatics between 18 and 65 years of age who had clinician-diagnosed asthma with 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL at the screening visit were recruited at the Rashid Hospital, Dubai, U.A.E., and the Zayed Military Hospital, Abu Dhabi, U.A.E. Subjects were excluded if they had used any previous VitD supplementation, had any other respiratory diseases or co-morbid conditions or were smokers. According to the American Academy of Family Physicians guidelines, participants received 50, 000 IU of VitD orally or placebo weekly over 8 weeks. Subjects were blinded to treatment and allocated to receive a VitD dose or placebo by the randomization schedule.
| Study group | Role | What they receive |
|---|---|---|
| Asthmatic low vitamin D on treatment | Active comparator | asthmatic patient low vitamin D level received treatment for Vitamin D 50000IU weekly Receives: Drug: Vitamin D |
| Asthmatic low vitamin D on placepo | Placebo comparator | asthmatic patient low vitamin D level received placepo Receives: Other: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
The top Vitamin D regulated pathways in response to Steroids by using Comparative Toxicogenomics Database from thousands of experiments.
identify VitD targeted enriched pathways, we analyzed Comparative Toxicogenomics .Enriched Ontology Clustering for the identified genes was performed using the Metascape (a web-based tool used for comprehensive gene list annotation and analysis resource)Database from thousands of experiments.
Measured: 8 weeks
Asthma Severity effects on VDR and steroid receptors genes by inalyzing expression profile of publicly available datasets (GSE69683) which has a large number of participants and detailed clinical information.
analyze the expression profile of publicly available datasets (GSE69683) which has a large number of participants and detailed clinical information.
Measured: 8 weeks
Examine the up-regulation of GR-α receptor by using supplementation of vitamin D on 45 vitamin D deficient asthmatics
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics.Standard statistical t-tests and one-way ANOVA were performed to test for statistical significance between data groups using GraphPad Prism 8 (GraphPad, San Diego, CA, USA). p < 0.05 was considered significant.
Measured: 8 weeks
Effects of IL-17 and IL-4 cytokines in asthmatic patients while using Vitamin D supplementation by using ELISA assay
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics. Using qRT-PCR expression of the cytokines
Measured: 8 weeks
Effects of IL-17 and IL-4 cytokines in asthmatic patients while using Vitamin D supplementation by using ELISA assay
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics.using Bioplex multiplex immunoassay (BioRad, CA,USA) was used to assess the protein expression of the cytokines and by measuring fold change.
Measured: 8 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jun 2020
- Study start1 Apr 2012
- Primary completion30 Apr 2014
- Study completion31 Dec 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Effect of DrugStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- double blinded randomized study
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 45 participants (actual)
Sponsor and investigators
- Lead sponsor
- Dubai Health Authority
- Sponsor type
- Other government
- Collaborators
- McGill University
- Responsible party
- Principal investigator, Bassam Mahboub, Dubai Health Authority
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04443387
- Sponsor's protocol ID
- MRC-04/2012_06
- Acronym
- VitaminD
- Status last verified
- Jun 2020
- First submitted
- 12 Jun 2020
- Last updated
- 23 Jun 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Vitamin D Regulates the Expression of Glucocorticoid Receptors in Blood of Severe Asthmatic Patients
- ClinicalTrials.gov ID
- NCT04443387
- Acronym / sponsor ID
- VitaminD / MRC-04/2012_06
- Conditions
- Effect of Drug
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 45 participants (actual)
- Lead sponsor
- Dubai Health AuthorityOther government
- Collaborators
- McGill University
- Study start
- 1 Apr 2012 (actual)
- Primary completion
- 30 Apr 2014 (actual)
- Study completion
- 31 Dec 2014 (actual)
- First posted
- 23 Jun 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe which has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked with a decreased glucocorticoid receptors (GR) ratio (GR-α/ GR-β ratio), indicating steroid hyporesponsiveness. Using combined in silico and in vivo approaches, aimed to explore the immunomodulatory effect of VitD on asthmatic patients diagnosed with hypovitaminosis D.
Detailed description
Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe which has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked with a decreased glucocorticoid receptors (GR) ratio (GR-α/ GR-β ratio), indicating steroid hyporesponsiveness. Using combined in silico and in vivo approaches, the investigators aimed to explore the immunomodulatory effect of VitD on asthmatic patients diagnosed with hypovitaminosis D. Methods: In silico tools were used to identify the regulatory effect of VitD supplementation on GR genes. The investigators measured the expression levels of GR-α and the inactive isoform, GR-β, in the blood of adult asthmatics diagnosed with hypovitaminosis D before and after VitD supplementation. Moreover, the blood levels of inflammatory cytokines associated with asthma severity were determined.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (investigator)
- Number of arms
- 2
- Model description
- double blinded randomized study
| Arm | Type | Receives |
|---|---|---|
| Asthmatic low vitamin D on treatment | Active comparator | Drug: Vitamin Dasthmatic patient low vitamin D level received treatment for Vitamin D 50000IU weekly |
| Asthmatic low vitamin D on placepo | Placebo comparator | Other: Placeboasthmatic patient low vitamin D level received placepo |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Diagnosis of asthma
- age group between 18 and 65 years
- low level of 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL
Key exclusion criteria (3 listed)
- smoker patients
- less than 18 years old
- patient on Vitamin D supplementation already
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Vitamin DA double-blinded, randomized, placebo-controlled study of VitD supplementation on 45 asthmatics with VitD deficiency was performed. Moderate to severe asthmatics between 18 and 65 years of age who had clinician-diagnosed asthma with 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL at the screening visit were recruited at the Rashid Hospital, Dubai, U.A.E., and the Zayed Military Hospital, Abu Dhabi, U.A.E. Subjects were excluded if they had used any previous VitD supplementation, had any other respiratory diseases or co-morbid conditions or were smokers. According to the American Academy of Family Physicians guidelines, participants received 50, 000 IU of VitD orally or placebo weekly over 8 weeks. Subjects were blinded to treatment and allocated to receive a VitD dose or placebo by the randomization schedule. | Drug | Asthmatic low vitamin D on treatment |
| PlaceboA double-blinded, randomized, placebo-controlled study of VitD supplementation on 45 asthmatics with VitD deficiency was performed. Moderate to severe asthmatics between 18 and 65 years of age who had clinician-diagnosed asthma with 25-hydroxyvitamin D3 (25 D3) level less than 20ng/mL at the screening visit were recruited at the Rashid Hospital, Dubai, U.A.E., and the Zayed Military Hospital, Abu Dhabi, U.A.E. Subjects were excluded if they had used any previous VitD supplementation, had any other respiratory diseases or co-morbid conditions or were smokers. According to the American Academy of Family Physicians guidelines, participants received 50, 000 IU of VitD orally or placebo weekly over 8 weeks. Subjects were blinded to treatment and allocated to receive a VitD dose or placebo by the randomization schedule. | Other | Asthmatic low vitamin D on placepo |
Primary outcome
The top Vitamin D regulated pathways in response to Steroids by using Comparative Toxicogenomics Database from thousands of experiments.
Time frame: 8 weeks
identify VitD targeted enriched pathways, we analyzed Comparative Toxicogenomics .Enriched Ontology Clustering for the identified genes was performed using the Metascape (a web-based tool used for comprehensive gene list annotation and analysis resource)Database from thousands of experiments.
Asthma Severity effects on VDR and steroid receptors genes by inalyzing expression profile of publicly available datasets (GSE69683) which has a large number of participants and detailed clinical information.
Time frame: 8 weeks
analyze the expression profile of publicly available datasets (GSE69683) which has a large number of participants and detailed clinical information.
Examine the up-regulation of GR-α receptor by using supplementation of vitamin D on 45 vitamin D deficient asthmatics
Time frame: 8 weeks
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics.Standard statistical t-tests and one-way ANOVA were performed to test for statistical significance between data groups using GraphPad Prism 8 (GraphPad, San Diego, CA, USA). p < 0.05 was considered significant.
Effects of IL-17 and IL-4 cytokines in asthmatic patients while using Vitamin D supplementation by using ELISA assay
Time frame: 8 weeks
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics. Using qRT-PCR expression of the cytokines
Effects of IL-17 and IL-4 cytokines in asthmatic patients while using Vitamin D supplementation by using ELISA assay
Time frame: 8 weeks
by doing double-blinded, randomized, placebo-controlled study was performed to test the effect of VitD supplementation on 45 vitamin D deficient asthmatics.using Bioplex multiplex immunoassay (BioRad, CA,USA) was used to assess the protein expression of the cytokines and by measuring fold change.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Jun 2020.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing Vitamin D in people with Effect of Drug, run by Dubai Health Authority.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 23 Jun 2020. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The top Vitamin D regulated pathways in response to Steroids by using Comparative Toxicogenomics Database from thousands of experiments. (time frame: 8 weeks). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jun 2020; AzTrials last refreshed its copy on 8 Nov 2026.