Upregulation of CDGSH iron sulfur domain 2 attenuates cerebral ischemia/reperfusion injury

CDGSH iron sulfur domain 2 can inhibit ferroptosis,which has been associated with cerebral ischemia/reperfusion,in individuals with head and neck cancer.Therefore,CDGSH iron sulfur domain 2 may be implicated in cerebral ischemia/reperfusion injury.To validate this hypothesis in the present study,we established mouse models of occlusion of the middle cerebral artery and HT22 cell models of oxygen-glucose deprivation and reoxygenation to mimic cerebral ischemia/reperfusion injury in vivo and in vitro,respectively.We found remarkably decreased CDGSH iron sulfur domain 2 expression in the mouse brain tissue and HT22 cells.When we used adeno-associated virus and plasmid to up-regulate CDGSH iron sulfur domain 2 expression in the brain tissue and HT22 cell models separately,mouse neurological dysfunction was greatly improved;the cerebral infarct volume was reduced;the survival rate of HT22 cells was increased;HT22 cell injury was alleviated;the expression of ferroptosis-related glutathione peroxidase 4,cystine-glutamate antiporter,and glutathione was increased;the levels of malondialdehyde,iron ions,and the expression of transferrin receptor 1 were decreased;and the expression of nuclear-factor E2-related factor 2/heme oxygenase 1 was increased.Inhibition of CDGSH iron sulfur domain 2 upregulation via the nuclear-factor E2-related factor 2 inhibitor ML385 in oxygen-glucose deprived and reoxygenated HT22 cells blocked the neuroprotective effects of CDGSH iron sulfur domain 2 up-regulation and the activation of the nuclear-factor E2-related factor 2/heme oxygenase 1 pathway.Our data indicate that the up-regulation of CDGSH iron sulfur domain 2 can attenuate cerebral ischemia/reperfusion injury,thus providing theoretical support from the perspectives of cytology and experimental zoology for the use of this protein as a therapeutic target in patients with cerebral ischemia/reperfusion injury.

Quality improvement of nursing on patients with complex cerebral arteriovenous malformation undergoing hybrid surgery:a prospective single-center study

Background:We sought to explore an optimal clinical nursing mode following a hybrid surgery for cerebral arteriovenous malformation.Methods:Patients with complex cerebral arteriovenous malformations seen in our neurosurgery department from January 2016 to December 2017 were prospectively enrolled.The hybrid surgery protocol included“angiographic diagnosis,surgical resection,and intraoperative angiographic evaluation”and“angiographic diagnosis and embolization,surgical resection,and intraoperative angiographic evaluation”.The patients were randomly stratified into intensive care group and routine care group.After surgery,intensive or routine care was provided,and the prognosis of patients was evaluated,with a subsequent comparative analysis.Results:A total of 109 cases were divided into the routine nursing group(n=54 cases)and intensive nursing group(n=55 cases).There were no significant differences between the two groups in baseline data before surgery.Postoperative lung infection in the intensive nursing group was significantly less frequent than those in the routine nursing group(5.5%vs.18.5%,P=0.039)with pulmonary infection and lower extremity venous thrombosis(5.5%vs.24.1%,P=0.006).The average hospital stay in the intensive nursing group was 14.4±5.78 days,which was significantly lower than that in the routine nursing group(19.3±6.38 days,P=0.013).At 3 months’follow-up after surgery,the Generic Quality of Life Inventory-74(GQOLI-74)dimension score and GQOLI-74 total score in the enhanced group were significantly better than those in the routine nursing group(P=0.017 and 0.023,respectively).Conclusions:Intensive postoperative nursing can improve the safety of patients after hybrid surgery,reduce the postoperative complications and the average length of hospital stay,and improve the quality of life of patients.