Ignite Creation Date:
2025-12-24 @ 6:44 PM
Ignite Modification Date:
2025-12-30 @ 5:21 AM
Study NCT ID:
NCT01705457
Status:
UNKNOWN
Last Update Posted:
2012-10-12
First Post:
2012-10-09
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Impact of Vitamin A on RAR Gene Expression in Multiple Sclerosis
Sponsor:
Tehran University of Medical Sciences
Organization:
Study Overview
Official Title:
Impact of Vitamin A Supplementation on RAR Gene Expression in PBMC Cells in Multiple Sclerotic Patients
Status:
UNKNOWN
Status Verified Date:
2012-10
Last Known Status:
ENROLLING_BY_INVITATION
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
RAR
Brief Summary:
The aim of this study is the comparison between the effects of supplementation with 25000 IU preformed vitamin A (retinyl palmitate)on retinoic acid receptor and retinoic x receptor expression.
Detailed Description:
Multiple Sclerosis (MS) is a chronic inflammatory disease where Th1 like responses from myelin-specific CD4+ T cells, as secretion of pro-inflammatory IFNγ, are believed to play a major role in the pathogenesis. The myelin-specific T cells that mediate tissue destruction in MS are believed to become activated outside the central nervous system (CNS) in lymphoid tissue and when they cross the blood brain barrier they will re-encounter their antigen. Immune deviation is the redirection of the immune response from most often Th1 like responses to Th2 like responses, even though the opposite can also occur. Vitamin A or Vitamin A-like analogs known as retinoids, are potent hormonal modifiers of type 1 or type 2 responses but a definitive description of their mechanism(s) of action is lacking. High level dietary vitamin A enhances Th2 cytokine production and IgA responses, and is likely to decrease Th1 cytokine production. Retinoic acid(RA) inhibits IL12 production in activated macrophages, and RA pretreatment of macrophages reduces IFNγ production and increases IL4 production in antigen primed CD4 T cells. Supplemental treatment with vitamin A or RA decreases IFNγ and increases IL5, IL10, and IL4 production by increase of retinoic acid receptor and retinoic x receptor .
Record Verification Date: August 2011
Record Verification Date: August 2011
Study Oversight
Has Oversight DMC:
True
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: