ArticleStroke and vascular neurology2025
Protective effects of melatonin on stroke in diabetic mice: central and peripheral inflammation modulation.
Article in Stroke and vascular neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- Biomimetic M2 microglia membrane-coated nanoplatform for immune reprogramming and targeted edaravone delivery in ischemic stroke.Regenerative biomaterials · 2026Article
- Sleep and Stroke-An Overlooked Bidirectional Influence: Why Should Sleep and Vascular Neurologists Work Closer?Journal of clinical medicine · 2025Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMelatonin protects against ischaemic stroke in diabetic animal models, though the mechanisms involving brain and peripheral immune responses remain underexplored. We aimed to clarify how melatonin interacts with these immune responses to protect against stroke in diabetic mice.
methodsType 1 diabetes mellitus (T1DM) was induced in mice using streptozotocin. RNA sequencing of brain tissue and peripheral blood mononuclear cells (PBMCs) was performed 24 hours poststroke. Inflammatory responses were evaluated 72 hours after ischaemia/reperfusion.
resultsMelatonin reduced infarction and improved neurological function in T1DM mice. In the ischaemic brain, melatonin downregulated inflammatory factor expression, with bioinformatics identifying 62 differentially expressed genes (DEGs) related to inflammation and 11 associated with inflammasomes. Western blotting confirmed reductions in NLRP3, HMGB1 and Cleaved Caspase-1 expression. Flow cytometry showed reduced infiltration of CD8+T cells and neutrophils. Melatonin decreased IL-6, IL-1β and IL-4 levels. In PBMCs, RNA sequencing revealed 939 DEGs following melatonin treatment. Kyoto Encyclopaedia of Genes and Genomes analysis indicated that downregulated DEGs were involved in metabolic pathways, and upregulated DEGs were enriched in the Jak-STAT signalling pathway. GO analysis showed that downregulated DEGs were enriched in the cytosol, and upregulated DEGs related to macromolecule modification. Protein-protein interaction analysis revealed that melatonin affected 38 inflammation-associated genes linked to key cytokines (Il6, Il1b, Ifng, Il4). Flow cytometry indicated melatonin increased CD8+T cells, monocytes and neutrophils in the blood, suggesting a reversal of immunosuppression. Multiplex cytokine assays showed melatonin decreased IL-6 and IFN-γ levels.
conclusionPoststroke melatonin therapy reduces ischaemic brain damage in T1DM mice by modulating central and peripheral inflammatory responses.
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