Vitamin D Receptor Polymorphisms and Efficacy of Vitamin D-Fortified Yogurt Drink in Patients With Type 2 Diabetes - Full Text View

Purpose

Study is a 12-week Double blind,controlled experiments designed to examine the possible effects of vitamin D receptor gene polymorphisms on the metabolic, inflammatory and oxidative stress markers in type 2 diabetic patients to vitamin D-fortified yogurt drink intake.

Condition	Intervention
Type 2 Diabetes Mellitus	Dietary Supplement: Fortified Yogurt Drink Dietary Supplement: Plain Yogurt Drink


Study Type:	Interventional
Study Design:	Allocation: Randomized Intervention Model: Parallel Assignment Masking: Double (Participant, Outcomes Assessor)
Official Title:	Determination of VDR Single Nucleotide Polymorphisms (SNPs ) and Their Rols in Efficacy of Vitamin D-fortified Yogurt Drink on the Metabolic-, Inflammatory - and Oxidative Stress Parameters in Type 2 Diabetic Patients

Resource links provided by NLM:

MedlinePlus related topics: Vitamin D

Drug Information available for: Vitamin D

U.S. FDA Resources

Further study details as provided by Tirang R. Neyestani, National Nutrition and Food Technology Institute:

Primary Outcome Measures:

serum 25-hydroxyvitamin D [ Time Frame: 3 months ]

Secondary Outcome Measures:

Glycemic control [ Time Frame: 3 Months ]
Inflammatory markers [ Time Frame: 3 Months ]
Oxidative stress markers [ Time Frame: 3 Months ]
Lipid profiles [ Time Frame: 3 Months ]
Blood pressure [ Time Frame: 3 Months ]


Enrollment:	180
Study Start Date:	October 2009
Study Completion Date:	April 2011
Primary Completion Date:	March 2011 (Final data collection date for primary outcome measure)

Arms	Assigned Interventions
Placebo Comparator: Plain Yogurt Drink Daily intake of unfortified yogurt drink(500 ml) for 12 weeks	Dietary Supplement: Plain Yogurt Drink Daily intake of unfortified yogurt drink(500 ml)for 12 weeks Other Name: PYD
Experimental: VDR Genotype (aa) Daily intake of yogurt drink fortified (500 ml) with 1000IU vitamin D for 12 weeks	Dietary Supplement: Fortified Yogurt Drink Daily intake of yogurt drink fortified (500 ml) with 1000IU vitamin D for 12 weeks Other Name: FYD
Experimental: VDR Genotype (AA) Daily intake of yogurt drink fortified (500 ml) with 1000 IU vitamin D for 12 weeks	Dietary Supplement: Fortified Yogurt Drink Daily intake of yogurt drink fortified (500 ml) with 1000IU vitamin D for 12 weeks Other Name: FYD
Experimental: VDR genotype (Aa) Daily intake of yogurt drink fortified (500 ml) with 1000IU vitamin D for 12 weeks	Dietary Supplement: Fortified Yogurt Drink Daily intake of yogurt drink fortified (500 ml) with 1000IU vitamin D for 12 weeks Other Name: FYD

Detailed Description:

In a 12-week randomized controlled trial ( double-blind study), based on data on serum 25(OH)D changes from other studies (35), to achieve 1 standard deviation difference in circulating 25(OH)D with two-sided alpha of 0.05 and a beta of 0.2 after a 12-week intervention period, the sample size was calculated 40 individuals per treatment group. Considering 3 polymorphic variant groups and one control group which receives plain yogurt drink, 160 subjects are needed. Allowing for 10% attrition over 12 weeks of intervention, a total of 180 subjects are required. In treatment groups, all patients receive 500 ml per day of low-fat (1%) Yogurt Drink fortified with approximately 500IU of vitamin D3 . Control group receives 500 ml per day of plain (unfortified) Yogurt Drink. Metabolic, inflammatory and oxidative stress markers are evaluated at the beginning and in the end of the interventional period.

Eligibility


Ages Eligible for Study:	30 Years to 45 Years (Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	Yes

Criteria

Inclusion Criteria:

Type 2 diabetes
Informed consent
BMI between 25 to 35 kg/m2
Age: 30-45 years old
Willingness to maintain current body weight for the duration of the study
Willingness to maintain baseline lifestyle activities and routines for the duration of the study
Willingness to avoid the use of all over-the-counter or prescription vitamins, dietary supplements, and herbal products during the study

Exclusion Criteria:

History of cardiovascular , Gastrointestinal , Renal disease and any other endocrinological disorders
Subjects receiving vitamin D or omega-3 supplement
Pregnancy , or lactation within the study period
Treatment with insulin
Treatment for weight reduction
Treatment for reducing serum lipids

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01236846

Locations


Iran, Islamic Republic of
National Nutrition and Food Technology Research Institute
Tehran, Iran, Islamic Republic of, 19395-4741
National Nutrition and Food Technology Research Institute
Tehran, Iran, Islamic Republic of, 1981619573
Tirang Neyestani
Tehran, Iran, Islamic Republic of

Tehran, Iran, Islamic Republic of

Sponsors and Collaborators

Tirang R. Neyestani

Tehran University of Medical Sciences

Investigators


Study Chair:	Tirang R. Neyestani, Ph.D.	National Nutrition & Food technology Research institute, P.O. Box 19395-4741
Study Chair:	Abolghasem Djazayeri, Professor	Tehran University of Medical Sciences
Principal Investigator:	Sakineh Shab-Bidar, M.Sc.	Tehran University of Medical Sciences

More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Neyestani TR, Djazayery A, Shab-Bidar S, Eshraghian MR, Kalayi A, Shariátzadeh N, Khalaji N, Zahedirad M, Gharavi A, Houshiarrad A, Chamari M, Asadzadeh S. Vitamin D Receptor Fok-I polymorphism modulates diabetic host response to vitamin D intake: need for a nutrigenetic approach. Diabetes Care. 2013 Mar;36(3):550-6. doi: 10.2337/dc12-0919. Epub 2012 Nov 16.

Shab-Bidar S, Neyestani TR, Djazayery A, Eshraghian MR, Houshiarrad A, Kalayi A, Shariatzadeh N, Khalaji N, Gharavi A. Improvement of vitamin D status resulted in amelioration of biomarkers of systemic inflammation in the subjects with type 2 diabetes. Diabetes Metab Res Rev. 2012 Jul;28(5):424-30. doi: 10.1002/dmrr.2290. Epub 2012 Feb 17.

Shab-Bidar S, Neyestani TR, Djazayery A, Eshraghian MR, Houshiarrad A, Gharavi A, Kalayi A, Shariatzadeh N, Zahedirad M, Khalaji N, Haidari H. Regular consumption of vitamin D-fortified yogurt drink (Doogh) improved endothelial biomarkers in subjects with type 2 diabetes: a randomized double-blind clinical trial. BMC Med. 2011 Nov 24;9:125. doi: 10.1186/1741-7015-9-125.

Shab-Bidar S, Neyestani TR, Djazayery A. Efficacy of vitamin D3-fortified-yogurt drink on anthropometric, metabolic, inflammatory and oxidative stress biomarkers according to vitamin D receptor gene polymorphisms in type 2 diabetic patients: a study protocol for a randomized controlled clinical trial. BMC Endocr Disord. 2011 Jun 22;11:12. doi: 10.1186/1472-6823-11-12.


Responsible Party:	Tirang R. Neyestani, associate professor, National Nutrition and Food Technology Institute
ClinicalTrials.gov Identifier:	NCT01236846 History of Changes
Other Study ID Numbers:	ABT-1236-RV
Study First Received:	August 9, 2010
Last Updated:	April 25, 2012

Keywords provided by Tirang R. Neyestani, National Nutrition and Food Technology Institute:


Vitamin D fortification Yogurt Drink Efficacy

Additional relevant MeSH terms:


Diabetes Mellitus Diabetes Mellitus, Type 2 Glucose Metabolism Disorders Metabolic Diseases Endocrine System Diseases Vitamins	Vitamin D Ergocalciferols Micronutrients Growth Substances Physiological Effects of Drugs Bone Density Conservation Agents

ClinicalTrials.gov processed this record on August 17, 2017