Curcumin’s spice-infused therapeutic promise: disease severity alleviation in a mouse model of multiple sclerosis via modulation of immune responses

MOLECULAR BIOLOGY REPORTS(2023)

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摘要
Background Multiple sclerosis (MS) is an autoimmune central nervous system (CNS) disorder indicated by demyelination, chronic inflammation, and neuronal destruction. Regional demyelination, inflammation responses, scar development, and various axonal damage are pathological characteristics of MS. Curcumin is a hydrophobic polyphenol extracted from the rhizome of the turmeric plant. In addition to anti-inflammatory effects, beneficial therapeutic effects such as antioxidant, anti-cancer and nerve protection have also been seen from this compound. The purpose of the current investigation was to provide light on the potential benefits of Curcumin in treating experimental autoimmune encephalomyelitis (EAE), the animal model of MS. Methods and results in Female C57BL/6 mice were used to induce EAE through myelin oligodendroglial glycoprotein (MOG). Curcumin doses of 100 and 200 mg/kg were administered orally in the treatment groups starting on the first day of EAE induction. Brains and splenocytes were extracted from euthanized animals on day 25 following EAE induction. Demyelination and leukocyte infiltration, proliferation, cytokine, and gene expression profiles were assessed. Our findings demonstrate that both low and high doses of Curcumin decreased the progression of EAE. Histological analyses revealed low infiltration of leukocytes into the CNS. Curcumin therapy enhanced Th2 and Treg cell secretion of IL-4, IL-10, and TGF-β although considerably decreasing IFN-γ and TNF-α. Curcumin-induced Th2 and Treg cell cytokine production and transcription factor gene expression (IL-13, GATA3, STAT6 and IL-35, CTLA4, Foxp3) and anti-inflammatory cytokines (IL-27, IL-33). Conclusion Overall, these findings provide additional evidence that Curcumin can slow disease development and alleviate symptoms in EAE through stimulating Treg and Th2 cell polarization. They support Curcumin’s potential therapeutic role in MS.
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关键词
Multiple sclerosis,Experimental autoimmune encephalomyelitis,Myelin oligodendrocyte glycoprotein,Curcumin
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