Clinical trial of the effect of combined omega-3 and vitamin D supplementation compared with the placebo on carotid intima-media thickness and metabolic profiles in type 2 diabetic patients with coronary heart disease
Objective: The aim of this study is to determine the effects of combined omega-3 and vitamin D supplementation on carotid intima-media thickness (CIMT) and metabolic profiles in type 2 diabetic patients with coronary heart disease (CHD). Study design: Parallel double-blind (both patients and researchers) clinical trial. Randomization will be done by the use of computer-generated random numbers. Inclusion criteria: Individuals aged 45-85 years diagnosed with type 2 diabetes and CHD will be included in this study. Exclusion criteria: Unwillingness to cooperate. Population and sample size: Among patients with CHD referred to Naghavi Clinic affiliated to Kashan University of Medical Sciences, 74 patients will be selected according to inclusion and exclusion criteria. Intervention: Patients will be assigned into two groups to receive combined vitamin D and omega-3 (n=37) or placebo (n=37). omega-3, vitamin D and placebo capsules are similar in shape and size. Fasting blood samples will be taken at baseline and 24 weeks after the intervention. At the beginning and end of the intervention: 24 weeks. Outcomes: Carotid intima-media thickness (primary outcome) and metabolic profiles (secondary outcomes) will be quantified at study baseline and end-of-trial.
General information
Acronym
IRCT registration information
IRCT registration number:IRCT2017090133941N15
Registration date:2017-11-01, 1396/08/10
Registration timing:retrospective
Last update:
Update count:2
Registration date
2017-11-01, 1396/08/10
Registrant information
Name
Mohammadreza Sharif
Name of organization / entity
Country
Iran (Islamic Republic of)
Phone
+98 31 5546 3378
Email address
ostadmohammadi-vr@kaums.ac.ir
Recruitment status
Recruitment complete
Funding source
Vice chancellor for research, Kashan University of Medical Sciences
Expected recruitment start date
2017-10-13, 1396/07/21
Expected recruitment end date
2017-10-27, 1396/08/05
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Clinical trial of the effect of combined omega-3 and vitamin D supplementation compared with the placebo on carotid intima-media thickness and metabolic profiles in type 2 diabetic patients with coronary heart disease
Public title
Effect of combined omega-3 and vitamin D supplementation in treatment of coronary heart disease
Purpose
Treatment
Inclusion/Exclusion criteria
Inclusion Criteria: Subjects aged 45-85 years; diagnosed with type 2 diabetes and CHD. Exclusion Criteria: Unwillingness to cooperate.
Age
From 45 years old to 85 years old
Gender
Both
Phase
2
Groups that have been masked
No information
Sample size
Target sample size:
74
Randomization (investigator's opinion)
Randomized
Randomization description
Blinding (investigator's opinion)
Double blinded
Blinding description
Placebo
Used
Assignment
Parallel
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Ethics committee of Kashan University of Medical Sciences
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Postal code
Approval date
2017-10-12, 1396/07/20
Ethics committee reference number
IR.KAUMS.MEDNT.REC.1396.79
Health conditions studied
1
Description of health condition studied
Coronary Heart Disease
ICD-10 code
I25.9
ICD-10 code description
Chronic ischaemic heart disease, unspecified
Primary outcomes
1
Description
Mean left CIMT
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Sonography
2
Description
Maximum left CIMT
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Sonography
3
Description
Mean right CIMT
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Sonography
4
Description
Maximum right CIMT
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Sonography
Secondary outcomes
1
Description
Insulin
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Elisa kit
2
Description
Insulin resistance
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Calculation using HOMA formula
3
Description
Total cholesterol
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Enzymatic kit
4
Description
Triglycerides
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Enzymatic kit
5
Description
HDL
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Enzymatic kit
6
Description
Hs-CRP
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Elisa kit
7
Description
Nitric oxide
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Spectrophotometry
8
Description
Malondialdehyde
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Spectrophotometry
9
Description
Glutathione
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Spectrophotometry
10
Description
Total antioxidant capacity
Timepoint
At the beginning of the study and after 24 weeks of intervention
Method of measurement
Spectrophotometry
Intervention groups
1
Description
Intervention group: 2000 mg omega-3 daily (Barij Essence, Kashan, Iran) and 50000 IU vitamin D every 2 weeks (Zahravi, Tabriz, Iran), for 24 weeks orally.
Category
Treatment - Drugs
2
Description
Control group: Placebo capsule (Barij Essence, Kashan, Iran), for 24 weeks orally.
Category
Treatment - Drugs
Recruitment centers
1
Recruitment center
Name of recruitment center
Naghavi Clinic
Full name of responsible person
Zatollah Asemi
Street address
Shahid Rajaee Avenue, Kashan
City
Kashan
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Vice chancellor for research, Kashan University of Medical Sciences
Full name of responsible person
Gholamali Hamidi
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Vice chancellor for research, Kashan University of Medical Sciences
Proportion provided by this source
100
Public or private sector
empty
Domestic or foreign origin
empty
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
empty
Person responsible for general inquiries
Contact
Name of organization / entity
Kashan University of Medical Sciences
Full name of responsible person
Zatollah Asemi
Position
Ph.D of Nutrition
Other areas of specialty/work
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Postal code
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir; asemi_r@yahoo.com
Web page address
Person responsible for scientific inquiries
Contact
Name of organization / entity
Kashan University of Medical Sciences
Full name of responsible person
Zatollah Asemi
Position
Ph.D of Nutrition
Other areas of specialty/work
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Postal code
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir; asemi_r@yahoo.com
Web page address
Person responsible for updating data
Contact
Name of organization / entity
Kashan University of Medical Sciences
Full name of responsible person
Zatollah Asemi
Position
Ph.D of Nutrition
Other areas of specialty/work
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Postal code
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir; asemi_r@yahoo.com
Web page address
Sharing plan
Deidentified Individual Participant Data Set (IPD)