Dexmedetomidine preconditioning inhibits the long term inflammation induced by renal ischemia/reperfusion injury in rats
AUTOR(ES)
Liu, Guiyong, Song, Hongfei, Qiu, Lili, He, Anren, Tong, Fangfang, Wan, Qifu, Wang, Xin, Xia, Yunfang, Huang, Lequn
FONTE
Acta Cir. Bras.
DATA DE PUBLICAÇÃO
2016-01
RESUMO
PURPOSE: To investigate the protective effects of dexmedetomidine (Dex) against renal ischemia/reperfusion injury (IRI). METHODS: Sprague-Dawley rats were randomly divided to sham group, IRI group and Dex group. The SD rats were subjected to 45 min of ischemia followed by eight weeks of reperfusion. Prior to ischemia, rats were either treated with Dex or not. Blood samples were collected for the detection of blood urea nitrogen (BUN) and creatinine (Cr) levels. Immunohistochemistry was performed for CD3 T-cell infiltrates. Real-time PCR and western blot were detected for the expression of TNF-α, IL-1β, ICAM-1, HMGB1 and TLR4. RESULTS: Compared with sham group, renal IRI significantly increased the serum levels of BUN and Cr. The H&E staining indicated that renal IRI resulted in obvious renal injury and immunohistochemistry found that there were more CD3 T-cell infiltrates in IRI group. Also, renal IRI upregulated the expression of TNF-α, IL-1β, ICAM-1, HMGB1 and TLR4. However, all these changes were alleviated by the treatment with Dex. CONCLUSIONS: Dexmedetomidine has beneficial effects on long term inflammation induced by renal ischemia/reperfusion injury. Its mechanisms may be achieved through inhibiting the HMGB1/TLR4 pathway to exert protective effects.
Documentos Relacionados
- Effect of ischemia preconditioning on renal ischemia/reperfusion injury in rats
- Protective Effects of Geraniol on Long Term Renal Ischemia/Reperfusion Injury in Rats
- Acute hyperglycemia prevents dexmedetomidine-induced preconditioning against renal ischemia-reperfusion injury
- The effects of local ischemic preconditioning and topical hypothermia in renal ischemia/reperfusion injury in rats
- Hydrogen Sulfide-Induced Hypometabolism Prevents Renal Ischemia/Reperfusion Injury