Resveratrol attenuates inflammatory hyperalgesia by inhibiting glial activation in mice spinal cords
| Autor: | Dong‑Ling Shi, Ying-ying Chen, Hui‑Yao Gu, Yue Liang Shen, Xing‑Hui Song, Lin-Lin Wang, Jue Hu, Ming‑Zhi Zheng |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Lipopolysaccharides
Male 0301 basic medicine Cancer Research Lipopolysaccharide Pharmacology Resveratrol Systemic inflammation Biochemistry Mice 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Stilbenes Genetics medicine Animals Molecular Biology Mice Inbred ICR Dose-Response Relationship Drug biology Glial fibrillary acidic protein Sirtuin 1 Antigens Differentiation 030104 developmental biology Spinal Cord Oncology chemistry Hyperalgesia Apoptosis Cancer research biology.protein Molecular Medicine lipids (amino acids peptides and proteins) Tumor necrosis factor alpha medicine.symptom Neuroglia 030217 neurology & neurosurgery |
| Zdroj: | Molecular Medicine Reports. 13:4051-4057 |
| ISSN: | 1791-3004 1791-2997 |
| DOI: | 10.3892/mmr.2016.5027 |
| Popis: | The present study aimed to investigate the effect of resveratrol on inflammatory pain. Mice were injected intraperitoneally with lipopolysaccharide (LPS) for 5 consecutive days to induce subacute systemic inflammation. Acetic acid‑induced writhing tests and tail‑flick tests were performed following the final LPS injection. Glial fibrillary acidic protein (GFAP; an astrocyte‑specific activation marker), ionized calcium binding adapter molecule 1 (Iba‑1; a microglia‑specific activation marker) and sirtuin 1 (SIRT1) protein expression levels were detected using immunohistochemistry analysis or western blotting. Following administration of LPS for 5 days, the number of writhes increased and the tail‑flick latency decreased. Resveratrol (10 or 20 mg/kg) partly inhibited LPS‑induced hyperalgesia and prevented the increase in tumor necrosis factor‑α and interleukin 6 levels induced by LPS. LPS injection reduced the SIRT1 protein expression and increased the number of GFAP‑positive and Iba‑1‑positive cells in the spinal cord. Resveratrol increased the SIRT1 protein expression levels and decreased the number of GFAP‑positive and Iba‑1‑positive cells in LPS‑treated mice. The protective effect of resveratrol was partly blocked by a selective SIRT1 inhibitor, EX‑257. Results from the present study suggest that subacute treatment with LPS induced the activation of glial cells and hyperalgesia. Resveratrol was demonstrated to inhibit the activation of glial cells and attenuate inflammatory hyperalgesia in a SIRT1‑dependent manner. |
| Databáze: | OpenAIRE |
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