Brief Summary
To compare the efficacy of two high dose vitamin D3 regimens (5,000 IU daily vs. 50,000 IU weekly) used clinically for the treatment of vitamin D deficiency versus a low dose of vitamin D3 used for supplementation (1,000 IU daily) in a clinical sample of predominantly Hispanic and black adolescents with vitamin D deficiency \[25(OH)D level \<20 ng/ml\] by assessing change in 25(OH)D levels before and after 8 weeks of treatment.
To compare the effects of vitamin D repletion \[25(OH)D level \>20 ng/mL\] on selected musculoskeletal, cardiometabolic and immune markers in predominantly Hispanic and black adolescents with vitamin D deficiency \[25(OH)D level \< 20 ng/mL\].
Hypothesis 1: Increase in vitamin D level will be associated with improvement in musculoskeletal, cardiometabolic, and immune markers including blood pressure, waist circumference, musculoskeletal symptoms, asthma severity and hand-grip strength.
To compare the effects of vitamin D repletion \[25(OH)D level \>20 ng/mL\] on selected musculoskeletal, cardiometabolic and immune markers in predominantly Hispanic and black adolescents with vitamin D deficiency \[25(OH)D level \< 20 ng/mL\].
Hypothesis 1: Increase in vitamin D level will be associated with improvement in musculoskeletal, cardiometabolic, and immune markers including blood pressure, waist circumference, musculoskeletal symptoms, asthma severity and hand-grip strength.
Brief Title
Treatment Study of Vitamin D Deficiency in Adolescents
Detailed Description
Vitamin D is an essential nutrient and pro-hormone that has garnered widespread attention over the past decade for both its known and theorized health benefits. Patients, clinicians and researchers have all been alerted to the increasing prevalence of vitamin D deficiency (defined as level of 25(OH)D \<20 ng/mL) and the significance of the extra-skeletal health effects of vitamin D. Aside from the skeletal impacts of Vitamin D, there has been recent evidence about potential health benefits of vitamin D related to the multiple extra-skeletal roles of this hormone. In fact, vitamin D receptors are found in many organs including brain, heart, skin, small intestine, gonads, prostate and breast as well in almost all nucleated cells including osteoblasts, activated T and B-lymphocytes, and B islet cells. Studies in children and adolescents as well as in adults show associations of vitamin D deficiency with cardiovascular risk factors, musculoskeletal health, asthma, and autoimmune diseases.
While Vitamin D deficiency is quite prevalent, adolescents who are obese or who are darker skinned are consistently shown to have higher rates of vitamin D deficiency than lean and lighter skinned adolescents. Treatment of vitamin D deficiency and maintenance of sufficient levels in adolescents are largely under-studied leaving patients and clinicians without clear evidence-based guidelines to follow.
The goal of this study is to compare the efficacy of different treatment regimens for vitamin D deficiency in our population of predominantly minority adolescents and to examine the effect of correction of vitamin D deficiency on selected extra-skeletal targets of vitamin D action including musculoskeletal, cardiometabolic, and immune function.
While Vitamin D deficiency is quite prevalent, adolescents who are obese or who are darker skinned are consistently shown to have higher rates of vitamin D deficiency than lean and lighter skinned adolescents. Treatment of vitamin D deficiency and maintenance of sufficient levels in adolescents are largely under-studied leaving patients and clinicians without clear evidence-based guidelines to follow.
The goal of this study is to compare the efficacy of different treatment regimens for vitamin D deficiency in our population of predominantly minority adolescents and to examine the effect of correction of vitamin D deficiency on selected extra-skeletal targets of vitamin D action including musculoskeletal, cardiometabolic, and immune function.
Categories
Completion Date
Completion Date Type
Actual
Conditions
Vitamin D Deficiency
Eligibility Criteria
Inclusion Criteria:
* age 13-20
Exclusion Criteria:
* currently receiving treatment for hypovitaminosis D
* hepatic or renal disease
* metabolic rickets
* inability to complete the questionnaire
* age 13-20
Exclusion Criteria:
* currently receiving treatment for hypovitaminosis D
* hepatic or renal disease
* metabolic rickets
* inability to complete the questionnaire
Inclusion Criteria
Inclusion Criteria:
* age 13-20
* age 13-20
Gender
All
Gender Based
false
Keywords
adolescents
minority
Healthy Volunteers
No
Last Update Post Date
Last Update Post Date Type
Actual
Last Update Submit Date
Maximum Age
20 Years
Minimum Age
13 Years
NCT Id
NCT01784029
Org Class
Other
Org Full Name
Montefiore Medical Center
Org Study Id
12-09-345
Overall Status
Completed
Phases
Phase 4
Primary Completion Date
Primary Completion Date Type
Actual
Official Title
Comparison of Two Standard High-dose Treatment Regimens for Vitamin D Deficiency in Minority Adolescents: Associations of Vitamin D Repletion With Changes in Markers of Musculoskeletal, Cardiometabolic, and Immune Function
Primary Outcomes
Outcome Measure
Change in 25(OH)D Serum Level After Treatment for Vitamin D Deficiency (Deficiency Defined as 25(OH)D <20 ng/dL)
Outcome Time Frame
Baseline to 3 months
Start Date
Status Verified Date
First Post Date
First Post Date Type
Estimated
First Submit Date
First Submit QC Date
Std Ages
Child
Adult
Maximum Age Number (converted to Years and rounded down)
20
Minimum Age Number (converted to Years and rounded down)
13
Investigators
Investigator Type
Principal Investigator
Investigator Name
Susan Coupey
Investigator Email
scoupey@montefiore.org
Investigator Phone