Evidence mapPaperPMID 41673386Full record

ArticleMolecular neurobiology2026

A Protective Role of Hydrogen Sulfide Donor GYY4137 Through Activated Microglia-induced Anti-inflammatory Cytokines in the Spinal Cord of Diabetic Rats.

Alyaa M A Mousa, Muneera AlDhaen, Bedoor Qabazard, Waleed M Renno, Mariam H M Yousif

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Article in Molecular neurobiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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5 authors.

Alyaa M A MousaDepartment of Anatomy, Faculty of Medicine, Kuwait University, Safat, 13110, Kuwait. alyaamousa@yahoo.com.ORCID http://orcid.org/0009-0000-2423-7510
Muneera AlDhaenDepartment of Anatomy, Faculty of Medicine, Kuwait University, Safat, 13110, Kuwait.
Bedoor QabazardDepartment of Pharmacology and Therapeutics, College of Pharmacy, Kuwait University, Safat, 13110, Kuwait.
Waleed M RennoDepartment of Anatomy, Faculty of Medicine, Kuwait University, Safat, 13110, Kuwait.
Mariam H M YousifDepartment of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Safat, 13110, Kuwait.

Funding

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6 · The paper itself

Abstract

The increasing significance of inflammation in the pathophysiology of diabetes and its complications, such as diabetic peripheral neuropathy, has generated significant interest in targeting inflammation for disease prevention and control. Hydrogen sulfide (H₂S) has emerged as a promising therapeutic candidate due to its regulatory role in neuroinflammation. The present study investigated the anti-inflammatory effects of prolonged treatment with H₂S donor GYY4137 on microglial and astrocyte activation, along with the subsequent release of anti-inflammatory cytokines, including interleukin (IL)-4, IL-10, IL-13, transforming growth factor-beta (TGF-β), and arginase-1, in the spinal cords of streptozotocin-induced diabetic male rats. We also examined the effect of GYY4137 on signal transducer and activator of transcription 3 (STAT3) and the expression of pro-inflammatory cytokine IL-12. STAT3 is crucial for cytokine release signaling and microglial polarization, while IL-12 is a key marker of inflammation severity in diabetes. GYY4137 treatment effectively suppressed microglial activation, STAT3 activation, and IL-12 expression, while significantly increasing the secretion of anti-inflammatory cytokines in diabetic rats during weeks 4, 8, and 10 post-treatments. Our previous work demonstrated that 4-week-GYY4137 treatment suppressed pro-inflammatory cytokines in diabetic rats. Here, we show that prolonged GYY4137 treatment facilitated microglial transition from a pro-inflammatory M1 phenotype to an anti-inflammatory M2 phenotype. The treatment also prevented the loss of astrocytes and neuronal cells in the spinal cord, indicating neuroprotective effects. In conclusion, our findings suggest that H₂S can shift microglial activity from neuroinflammation to neuroprotection, highlighting its potential as a possible candidate for novel therapeutic strategy for diabetes and its complications.

Indexed as

Anti-Inflammatory AgentsCytokinesDiabetes Mellitus, ExperimentalHydrogen SulfideMicrogliaMorpholinesNeuroprotective AgentsOrganothiophosphorus CompoundsSpinal CordAnimalsMaleRatsRats, Sprague-DawleySTAT3 Transcription FactorAnti-Inflammatory AgentsCytokinesGYY 4137Hydrogen SulfideMorpholinesNeuroprotective AgentsOrganothiophosphorus CompoundsSTAT3 Transcription FactorAnti-inflammatory cytokinesDiabetic peripheral neuropathyGYY4137Hydrogen sulfide (H2S)Microglial polarizationNeuroinflammation

Identifiers

PMID41673386
PMCPMC12894204

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.