Effect and mechanism of salvianolic acid B on the myocardial ischemiareperfusion injury in rats

Objective:To investigate the effect of salvianolic acid B on rats with myocardial ischemiareperfusion injury.Methods:SD rats were randomly divided into five groups(n=10 in each group):A sham operation group,B ischemic reperfusion group model group,C low dose salvianolic acid B group,D median dose salvianolic acid B group,E high dose salvianolic acid B group.One hour after establishment of the myocardial ischemia-reperfusion model,the concentration and the apoptotic index of the plasma level of myocardial enzymes(CTnⅠ,CKMB),SOD,MDA,NO,ET were,measured.Heart tissues were obtained and micro-structural changes were observed.Results:Compared the model group,the plasma CTnⅠ,CK-MB,MDA and ET contents were significantly increased,NO,T-SOD contents were decreased in the treatment group(group C,D,and E)(P<0.05);compared with group E,the plasma CTnⅠ,CKMB,MDA and ET levels were increased,the NO,T-SOD levels were decreased in groups C and D(P<0.05).Infarct size was significantly reduced,and the myocardial ultrastructural changes were improved significantly in treatment group.Conclusions:Salvianolic acid B has a significant protective effect on myocardial ischemia-reperfusion injury.It can alleviate oxidative stress,reduce calcium overload,improve endothelial function and so on.

Glaucoma secondary to systemic lupus erythematosus

Background Glaucoma secondary to systemic lupus erythematosus （SLE - an uncommon but serious complication that threatens vision and therefore cannot be neglected. A few cases of second, y glaucoma resulting from lupus-induced or iatrogenic ocular impairments have been reported in association with SLE. However, a systematic analysis of the diagnosis and treatment of glaucoma secondary to SLE has not been reported in the literature. The aim of this study is to further investigate the relationship between glaucoma and SLE. Methods In this study, we reviewed nine eyes of five patients diagnosed with secondary glaucoma associated with SLE, including one case of neovascular glaucoma and four cases of steroid-induced glaucoma. Results Neovascular glaucoma was successfully treated by Ahmed glaucoma valve implantation surgery with adjunctive ranibizumab intravitreal injection, followed by panretinal photocoagulation （PRP）. The steroid-induced glaucoma in eight eyes of four cases were controlled by trabeculectomy along with antiproliferative agents. Conclusion Regular follow-up ocular examinations should be conducted to ensure early diagnosis and treatment of secondary glaucoma in SLE patients to improve the prognosis of vision.