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Article Abstract
To explore the effect of picroside Ⅱ on the expression of mitochondrial voltage-dependent anion channel 1 (VDAC1) in rats after cerebral ischemiareperfusion. A total of 70 Wistar rats models with middle cerebral artery occlusionreperfusion (MCAO/R) were randomly divided into the sham group, model group, picroside (Picr) group, ruthenium red (RuR) group, RuR+ Picr group, Spermine (Sper) group, Sper+ Picr group (=10 per group). Modified neurological severity scale (mNSS) was used to evaluated the neurobehavioral function, the expression of reactive oxygen species (ROS) in brain tissues were measured by enzyme-linked immunosorbent assay (ELISA), the morphology of brain tissues was observed by hematoxylin-eosin (HE) staining, the apoptotic cells were counted by terminal deoxynucleotidyl transferase dUTP nick end labeling assay (TUNEL), and the expressions of VDAC1 and endonuclease G (EndoG) were determined by immunohistochemical assay and Western blot. Compared with the shame group, the mNSS scores (9.6±1.9), the expression of ROS[(47.6±2.7)U/ml], the apoptosis of neuron(23.8±2.8), and the expressions of VDAC1(0.94±0.06) and EndoG in cytoplasm (0.76±0.06) and nuclei(0.75±0.06)were enhanced in the model group (all <0.05). The Picr group had obviously decreased mNSS scores (5.7±0.9), ROS expression[(35.6±2.2)U/ml], number of apoptotic cells (14.5±2.1), VDAC1 (0.63±0.06) and EndoG in cytoplasm (0.34±0.05) and nuclei (0.31±0.06)expressions compared to the model group (<0.05). Picroside Ⅱ could attenuate cerebral I/R injury by down-regulating the expression of VDAC1 and inhibiting the EndoG release from mitochondria into cytoplasm.
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| http://dx.doi.org/10.3760/cma.j.issn.0376-2491.2018.02.013 | DOI Listing |
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