Effect of propofol on mitochondrial fission in a rat hippocampal neuron model of hypoxia/reoxygenation injury
10.3760/cma.j.issn.0254-1416.2016.06.029
- VernacularTitle:丙泊酚对大鼠海马神经元缺氧复氧损伤时线粒体分裂的影响
- Author:
Haibin WANG
;
Jiaxiu LIU
;
Changxin JIA
;
Qin ZHAO
;
Shilei WANG
;
Xue WANG
- Publication Type:Journal Article
- Keywords:
Propofol;
Anoxia;
Mitochondria;
Hippocampus;
Neurons
- From:
Chinese Journal of Anesthesiology
2016;36(6):758-761
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of propofol on mitochondrial fission in a rat hippocampal neuron model of hypoxia/reoxygenation (H/R) injury.Methods Primarily cultured hippocampal neurons of neonatal Sprague-Dawley rats were randomly divided into 4 groups (n =42 each) using a random number table:control group (group C);vehicle group (group V);H/R group;H/R+propofol group (group H/R+P).In group V,H/R was not produced,the vehicle dimethyl sulfoxide with the final concentration of 0.01％ was added,and the cells were then incubated for 6 h.In group H/R,the hippocampal neurons were subjected to oxygen-glucose deprivation for 6 h followed by 20 h reoxygenation.In group H/R+P,propofol with the final concentration of 1 μmol/L was added at 6 h of hypoxia.At 20 h of reoxygenation,the cell apoptosis (using flow cytometry),Ca2+ concentrations in cytoplasm (with the laser scanning confocal microscope),calcineurin (CaN) activities (by enzyme-linked immunosorbent assay),and expression of mitochondrial fission proteins dynamin-related protein 1 (Drp1) and fission 1 (Fis1),and apoptosis-related proteins cytochrome c (Cyt c) and apoptosis-inducing factor (AIF) (by Western blot) were measured.The apoptotic rate was calculated.Results Compared with group C,the apoptotic rate,Ca2+concentrations,CaN activities,and expression of Drp1,Fis1,Cyt c and AIF were significantly increased in H/R and H/R+P groups (P＜0.05),and no significant changes were found in the parameters mentioned a2+.bove in group V (P＞0.05).Compared with group H/R,the apoptotic rate,Ca+ concentrations,CaN activities,and expression of Drp1,Fis1,Cyt c and AIF were significantly decreased in group H/R+P (P＜0.05).Conclusion Propofol can reduce the H/R injury to rat hippocampal neurons through inhibiting mitochondrial fission.
