Clinical trial of the effect of vitamin D supplementation compared with the placebo on metabolic profiles and gene expression related to insulin and lipid in women with polycystic ovary syndrome candidate for IVF
Objective: The aim of this study is to determine the effects of vitamin D supplementation on metabolic profiles and gene expression related to insulin and lipid in patients with polycystic ovary syndrome candidate for IVF.
Design
Study design: Randomized double-blind placebo-controlled trial. Randomization will be done by the use of computer-generated random numbers. Patients will be assigned into two groups to receive vitamin D supplements (n=20) or placebo (n=20).
Settings and conduct
Among patients with polycystic ovary syndrome candidate for IVF referred to Naghavi Clinic affiliated to Kashan University of Medical Sciences, 40 patients will be selected according to inclusion and exclusion criteria. Participants, investigators or the assessors of the outcomes are unaware of the study groups. Supplements and placebos are similar in shape and size. Fasting blood samples will be taken at baseline and 8 weeks after the intervention. At the beginning and the end of the intervention: 8 weeks.
Participants/Inclusion and exclusion criteria
Inclusion criteria: Patients with polycystic ovary syndrome candidate for IVF aged 18 to 40 years. Exclusion criteria: Unwillingness to cooperate.
Intervention groups
Intervention group: 50000 IU vitamin D every 2 weeks (Zahravi, Tabriz, Iran), for 8 weeks orally. Control group: Placebo (Barij Essence, Kashan, Iran) every 2 weeks, for 8 weeks orally.
Main outcome variables
Outcomes: Markers of insulin metabolism (primary outcomes) and lipid profiles and gene expression related to insulin and lipid (secondary outcomes) will be quantified at study baseline and end-of-trial.
General information
Reason for update
Acronym
IRCT registration information
IRCT registration number:IRCT20170513033941N27
Registration date:2018-01-15, 1396/10/25
Registration timing:retrospective
Last update:2018-01-15, 1396/10/25
Update count:1
Registration date
2018-01-15, 1396/10/25
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
Expected recruitment start date
2017-12-26, 1396/10/05
Expected recruitment end date
2018-01-10, 1396/10/20
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Clinical trial of the effect of vitamin D supplementation compared with the placebo on metabolic profiles and gene expression related to insulin and lipid in women with polycystic ovary syndrome candidate for IVF
Public title
Effect of vitamin D supplementation in treatment of patients with polycystic ovary syndrome candidate for IVF
Purpose
Treatment
Inclusion/Exclusion criteria
Inclusion criteria:
Inclusion criteria: Patients with polycystic ovary syndrome.
Individuals aged 18 to 40 years.
Exclusion criteria:
Exclusion criteria: Unwillingness to cooperate.
Age
From 18 years old to 40 years old
Gender
Female
Phase
3
Groups that have been masked
Participant
Investigator
Outcome assessor
Sample size
Target sample size:
40
Randomization (investigator's opinion)
Randomized
Randomization description
At study baseline and after stratification for pre-intervention BMI (<25 and ≥25 kg/m2) and age (<30 and ≥30 y), subjects will be randomly divided into two groups to receive supplement or placebo. Randomization will be done by the use of computer-generated random numbers.
Blinding (investigator's opinion)
Double blinded
Blinding description
Participants, investigators or the assessors of the outcomes are unaware of the study groups.
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
Province
Isfehan
Postal code
8115187159
Approval date
2017-12-25, 1396/10/04
Ethics committee reference number
IR.KAUMS.MEDNT.REC.1396.88
Health conditions studied
1
Description of health condition studied
Polycystic ovary syndrome
ICD-10 code
E28.2
ICD-10 code description
Polycystic ovarian syndrome
Primary outcomes
1
Description
Insulin
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
Elisa kit
2
Description
Insulin resistance
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
Calculation using HOMA formula
Secondary outcomes
1
Description
Total cholesterol
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
Enzymatic kit
2
Description
HDL
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
Enzymatic kit
3
Description
Triglycerides
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
Enzymatic kit
4
Description
Expressed levels of PPAR-γ gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
5
Description
Expressed levels of GLUT-1 gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
6
Description
Expressed levels of GLUT-4 gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
7
Description
Expressed levels of LDL-R gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
8
Description
Expressed levels of IRS1 gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
9
Description
Expressed levels of IRS2 gene
Timepoint
At the beginning of the study and after 8 weeks of intervention
Method of measurement
PCR
Intervention groups
1
Description
Intervention group: 50000 IU vitamin D every 2 weeks (Zahravi, Tabriz, Iran), for 8 weeks orally.
Category
Treatment - Drugs
2
Description
Control group: Placebo (Barij Essence, Kashan, Iran) every 2 weeks, for 8 weeks orally.
Category
Placebo
Recruitment centers
1
Recruitment center
Name of recruitment center
Naghavi Clinic
Full name of responsible person
Dr. Foroozanfard
Street address
Shahid Rajaee Avenue, Kashan
City
Kashan
Province
Isfehan
Postal code
8115187159
Phone
+98 31 5546 3378
Email
forozanfar_f@kaums.ac.ir
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Kashan University of Medical Sciences
Full name of responsible person
Gholamali Hamidi
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Province
Isfehan
Postal code
8115187159
Phone
+98 31 5546 3378
Email
hamidi_gh@kaums.ac.ir
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Kashan University of Medical Sciences
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic
Person responsible for general inquiries
Contact
Name of organization / entity
Kashan University of Medical Sciences
Full name of responsible person
Zatollah Asemi
Position
Nutritionist
Latest degree
Ph.D.
Other areas of specialty/work
Nutrition
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Province
Isfehan
Postal code
8115187159
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir
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
Nutritionist
Latest degree
Ph.D.
Other areas of specialty/work
Nutrition
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Province
Isfehan
Postal code
8115187159
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir
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
Nutritionist
Latest degree
Ph.D.
Other areas of specialty/work
Nutrition
Street address
Ghotbe Ravandi Boulevard, Kashan
City
Kashan
Province
Isfehan
Postal code
8115187159
Phone
+98 31 5546 3378
Fax
Email
asemi_z@kaums.ac.ir
Web page address
Sharing plan
Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Undecided - It is not yet known if there will be a plan to make this available
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available