Molecular effects of curcumin on the experimental autoimmune encephalomyelitis
Laleh Mavaddatiyan1, Shiva Khezri1, Seyyed Meysam Abtahi Froushani2
1Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran.
Abstract:
Experimental autoimmune encephalomyelitis (EAE) is an animal model of multiple sclerosis (MS). Previous studies have shown that myelin degradation during MS and EAE resulted in reduced expression of some of the proteins, e.g., the MBP (myelin basic protein), and increased expression of genes such as iNOS (Inducible nitric oxide synthase) and NOGO-A in the affected patients. In the present study, EAE was induced by immunizing Wistar rats (n=12) with homogenized spinal cord of guinea pig and Freund's complete adjuvant. Curcumin is an active ingredient in turmeric with anti-inflammatory properties, which has been studied in this article. In this study, the effect of curcumin administration on the change of the expression of MBP, NOGO-A, and iNOS genes was evaluated using the RT-PCR (Reverse transcription-polymerase chain reaction) technique. The obtained results indicated it could be concluded that curcumin was able to improve EAE by increasing the amount of MBP gene expression and reducing the intensity of NOGO-A expression.
Insights
Curcumin improved experimental autoimmune encephalomyelitis (EAE) in rats by boosting myelin basic protein (MBP) gene expression and lowering NOGO-A expression. This suggests curcumin may be a potential therapeutic for EAE and multiple sclerosis (MS).
Area of Science:
- Neuroimmunology
- Pharmacology
Background:
- Experimental autoimmune encephalomyelitis (EAE) serves as a model for multiple sclerosis (MS).
- Myelin degradation in MS and EAE is linked to reduced myelin basic protein (MBP) and increased inducible nitric oxide synthase (iNOS) and NOGO-A gene expression.
Purpose of the Study:
- To investigate the therapeutic potential of curcumin in EAE.
- To evaluate the effect of curcumin on the gene expression of MBP, NOGO-A, and iNOS in an EAE rat model.
Main Methods:
- EAE was induced in Wistar rats using guinea pig spinal cord homogenate and Freund's complete adjuvant.
- Curcumin's effect on MBP, NOGO-A, and iNOS gene expression was analyzed using Reverse Transcription-Polymerase Chain Reaction (RT-PCR).
Main Results:
- Curcumin administration increased the expression of the MBP gene in EAE rats.
- Curcumin treatment reduced the expression of the NOGO-A gene in EAE rats.
Conclusions:
- Curcumin demonstrates a therapeutic effect on EAE.
- The findings suggest curcumin can modulate key gene expressions associated with EAE pathology, potentially offering a new therapeutic avenue for MS.
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