- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02019186
Effects of Vitamin C and E on Endothelial Function in Adolescent Diabetes
February 2, 2015 updated by: Robert Hoffman, Nationwide Children's Hospital
The endothelium is the lining of the blood vessels that helps prevent damage to the vessels.
The endothelium does not function as well as it should in adolescents with type 1 diabetes.
This causes future diabetes complications.
Adolescents with diabetes also have abnormalities of the cells that repair the endothelium.
These abnormalities may be due to damage caused by intermittent hyperglycemia.
This studied is designed to study whether low dose, combined Vitamin C and E supplementation improves endothelial function and repair in adolescents with type 1 diabetes.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
9
Phase
- Phase 4
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Ohio
-
Columbus, Ohio, United States, 43205
- Research Institute at Nationwide Children's Hospital
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
6 years to 13 years (Child)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Children and adolescent with T1D between 8 and 15 years of age will be studied.
- Started on insulin therapy immediately after diagnosis.
- Fasting c-peptide levels must be less than 0.4 ng/ml.
- Hgb A1c levels greater than 8.3%.
- All subjects must be in good health other than having diabetes. Subjects with hypothyroidism will be allowed assuming they are on stable thyroxine replacement and have normal thyroid function tests.
- Females on oral contraceptives will also be eligible to participate.
Exclusion Criteria:
- History oral hypoglycemic agent use.
- BMI>95th percentile
- Hypertension
- Elevated creatinine levels
- Microalbuminuria.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Vitamin C and E
6 weeks of daily treatment with Vitamin C and E
|
<30 kg 250 mg 30-60 kg 500 mg >60 kg 750 mg
<30 kg 100 IU, 30-60 kg 200 IU, >60 kg 300 IU
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
endothelial function
Time Frame: 6 weeks
|
Endothelial function will be measured before and after 6 weeks of therapy with Vitamin C and E
|
6 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Endothelial progenitor cells
Time Frame: 6 weeks
|
Endothelial progenitor cells will be measured before and after 6 weeks of Vitamin C and E therapy
|
6 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Hoffman RP, Dye AS, Bauer JA. Ascorbic acid blocks hyperglycemic impairment of endothelial function in adolescents with type 1 diabetes. Pediatr Diabetes. 2012 Dec;13(8):607-10. doi: 10.1111/j.1399-5448.2012.00882.x. Epub 2012 Aug 28.
- Dye AS, Huang H, Bauer JA, Hoffman RP. Hyperglycemia increases muscle blood flow and alters endothelial function in adolescents with type 1 diabetes. Exp Diabetes Res. 2012;2012:170380. doi: 10.1155/2012/170380. Epub 2012 Jun 3.
- Varvarovska J, Racek J, Stozicky F, Soucek J, Trefil L, Pomahacova R. Parameters of oxidative stress in children with Type 1 diabetes mellitus and their relatives. J Diabetes Complications. 2003 Jan-Feb;17(1):7-10. doi: 10.1016/s1056-8727(01)00228-8.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
December 1, 2013
Primary Completion (Actual)
January 1, 2015
Study Completion (Actual)
January 1, 2015
Study Registration Dates
First Submitted
December 18, 2013
First Submitted That Met QC Criteria
December 23, 2013
First Posted (Estimate)
December 24, 2013
Study Record Updates
Last Update Posted (Estimate)
February 3, 2015
Last Update Submitted That Met QC Criteria
February 2, 2015
Last Verified
February 1, 2015
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Glucose Metabolism Disorders
- Metabolic Diseases
- Immune System Diseases
- Autoimmune Diseases
- Endocrine System Diseases
- Diabetes Mellitus
- Diabetes Mellitus, Type 1
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Protective Agents
- Micronutrients
- Antioxidants
- Vitamin E
- Vitamins
- Ascorbic Acid
Other Study ID Numbers
- CCRI-VITCE
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Type 1 Diabetes Mellitus
-
SanofiCompletedType 1 Diabetes Mellitus-Type 2 Diabetes MellitusHungary, Russian Federation, Germany, Poland, Japan, United States, Finland
-
University of Colorado, DenverMassachusetts General Hospital; Beta Bionics, Inc.CompletedDiabetes Mellitus, Type 1 | Type 1 Diabetes | Diabetes type1 | Type 1 Diabetes Mellitus | Autoimmune Diabetes | Diabetes Mellitus, Insulin-Dependent | Juvenile-Onset Diabetes | Diabetes, Autoimmune | Insulin-Dependent Diabetes Mellitus 1 | Diabetes Mellitus, Insulin-Dependent, 1 | Diabetes Mellitus, Brittle | Diabetes Mellitus, Juvenile-Onset and other conditionsUnited States
-
University of California, San FranciscoJuvenile Diabetes Research FoundationCompletedType 1 Diabetes Mellitus | Diabetes Mellitus, Type I | Insulin-Dependent Diabetes Mellitus 1 | Diabetes Mellitus, Insulin-Dependent, 1 | IDDMUnited States, Australia
-
AstraZenecaCompletedType 2 Diabetes Mellitus | Type 1 Diabetes MellitusUnited States
-
Capillary Biomedical, Inc.TerminatedType 1 Diabetes | Type 1 Diabetes Mellitus | Diabetes Mellitus, Type I | Diabetes Mellitus, Insulin-Dependent, 1 | IDDMAustria
-
National Institute of Allergy and Infectious Diseases...PPD; Rho Federal Systems Division, Inc.; Immune Tolerance Network (ITN)CompletedType 1 Diabetes Mellitus | T1DM | T1D | New-onset Type 1 Diabetes MellitusUnited States, Australia
-
Shanghai Changzheng HospitalRecruitingBrittle Type 1 Diabetes MellitusChina
-
Capillary Biomedical, Inc.CompletedDiabetes Mellitus, Type 1 | Type 1 Diabetes | Type 1 Diabetes Mellitus | Diabetes Mellitus, Insulin-Dependent, 1Australia
-
Spiden AGDCB Research AGRecruitingType 1 Diabetes Mellitus | Type 1 Diabetes Mellitus With Hypoglycemia | Type 1 Diabetes Mellitus With HyperglycemiaSwitzerland
-
Hoffmann-La RocheRoche DiagnosticsCompletedDiabetes Mellitus Type 2, Diabetes Mellitus Type 1Germany
Clinical Trials on Vitamin C
-
Shiraz University of Medical SciencesCompletedRestless Legs Syndrome | Kidney Failure, ChronicIran, Islamic Republic of
-
AronPharma Sp. z o. o.Medical University of Warsaw; Medical University of GdanskCompletedBioavailability of Vitamin CPoland
-
TCI Co., Ltd.CompletedVitamin C DeficiencyTaiwan
-
Academic and Community Cancer Research UnitedNational Cancer Institute (NCI)TerminatedClear Cell Renal Cell Carcinoma | Metastatic Clear Cell Renal Cell Carcinoma | Stage III Renal Cell Cancer AJCC v8 | Unresectable Renal Cell Carcinoma | Stage IV Renal Cell Cancer AJCC v7United States
-
Fudan UniversityRecruitingMetastatic Pancreatic Cancer | Terminal CancerChina
-
University of East AngliaThe Norfolk and Norwich University Hospitals NHS Foundation Trust; The Quadram...Not yet recruiting
-
Damascus UniversityRecruitingDistal Radius Fracture | Prophylaxis | Vitamine cSyrian Arab Republic
-
Austin Institute for Clinical ResearchSkinCeuticalsNot yet recruiting
-
CargillClinres Farmacija d.o.o.; PharmaLinea d.o.o.; Diagnostic Laboratory Medicare... and other collaboratorsCompletedSigns and Symptoms, RespiratorySlovenia