OBJECTIVES: To investigate the effects of quercetin on cuproptosis and L-type calcium currents in the myocardium of diabetic rats. METHODS: Forty SD rats were randomized into control group and diabetic model groups. The rat models of diabetes mellitus (DM) induced by high-fat and high-sugar diet combined with streptozotocin (STZ) injection were further divided into DM model group, quercetin treatment group, and empagliflozin treatment group (n=10). Blood glucose and body weight were measured every other week, and cardiac function of the rats was evaluated using echocardiography. HE staining, Sirius red staining, and wheat germ agglutinin (WGA) analysis were used to observe the changes in myocardial histomorphology, and serum copper levels and myocardial FDX1 expression were detected. In cultured rat cardiomyocyte H9c2 cells with high-glucose exposure, the effects of quercetin and elesclomol, alone or in combination, on intracellular CK-MB and LDH levels and FDX1 expression were assessed, and the changes in L-type calcium currents were analyzed using patch-clamp technique. RESULTS: The diabetic rats exhibited elevated blood glucose, reduced body weight, impaired left ventricular function, increased serum copper levels and myocardial FDX1 expression, decreased L-type calcium currents, and prolonged action potential duration. Quercetin and empagliflozin treatment significantly lowered blood glucose, improved body weight, and restored cardiac function of the diabetic rats, and compared with empagliflozin, quercetin more effectively reduced serum copper levels, downregulated FDX1 expression, and enhanced myocardial L-type calcium currents in diabetic rats. In H9c2 cells, high glucose exposure significantly increased myocardial expressions of FDX1, CK-MB and LDH, which were effectively lowered by quercetin treatment; Elesclomol further elevated FDX1, CK-MB and LDH levels in the exposed cells, and these changes were not significantly affected by the application of quercetin. CONCLUSIONS Quercetin ameliorates myocardial injury in diabetic rats possibly by suppressing myocardial cuproptosis signaling and restoring L-type calcium channel activity.
Animals ; Quercetin/pharmacology* ; Calcium Channels, L-Type/metabolism* ; Diabetes Mellitus, Experimental/metabolism* ; Rats, Sprague-Dawley ; Rats ; Myocytes, Cardiac/drug effects* ; Myocardium/pathology* ; Male

Objective:To investigate the clinical efficacy of superficial temporal artery-anterior temporal artery bypass combined with encephalo-duro-arterio-synangiosis in the treatment of Moyamoya disease.Methods:A total of 42 patients with moyamoya disease, admitted to our hospital from January 2016 to January 2019, were selected and divided into observation group and control group according to surgical management. The patients in the observation group were treated with superficial temporal artery-anterior temporal artery bypass combined with encephalo-duro-arterio-synangiosis, and the patients in the control group were treated with superficial temporal artery-angular gyrus artery bypass combined with encephalo-duro-arterio-synangiosis. The clinical data of these patients were analyzed retrospectively, and the differences of efficacy and safety between the two groups were compared.Results:There was no significant difference in operation time between the two groups ([189.16±21.23] min vs. [179.46±16.95] min, P>0.05). One d after the operation, the patients in both groups were re-examined with CT angiography, and the anastomotic vessels were unobligated. Two patients in the observation group had cerebral infarction in the operative region and one patient in the control group had cerebral infarction in the operative region; no significant difference was noted in the incidence of postoperative complications between the two groups ( P>0.05). The modified Rankin scale (mRS) scores in both groups one month after surgery were significantly decreased as compared with those one d before surgery ( P<0.05); one month after surgery, the mRS scores in observation group (0.13±0.346) were significantly lower than those in the control group (0.42±0.515, P<0.05). Conclusion:The superficial temporal artery-anterior temporal artery bypass combined with encephalo-duro-arterio-synangiosis has definite clinical efficacy in the treatment of moyamoya disease.

Objective To investigate the effect of liver detoxification soup combined with compound glycyrrhizin on hepatitis-related factors in patients with chronic hepatitis B.MethodsFrom April 2014 to August 2015, 86 patients with chronic hepatitis B were enrolled in this study.Random number table was divided into observation group and control group (43 cases).The control group was given routine glycyrrhizin and other conventional (ALT), serum total bilirubin (TBil), serum albumin transferase (ALT) and serum total bilirubin (TBil) were measured before and after treatment.(HA), laminin (LN), type Ⅳ collagen (Ⅳ-C) and type Ⅲ procollagen (PCⅢ) were used to analyze the effect of hepatic fibrosis, And observe adverse reactions.ResultsThe effective rate of the observation group was 93.02% higher than that of the control group (76.74%, P<0.05).After treatment, the patients were treated with chest discomfort, emotional depression, epigastric fullness, fatigue, ALT (35.28±1.35) U/L, HA (165.25±1.44) mg/L, and the treatment group (P<0.05).After treatment, the levels of TBil (30.34±1.59)μmol/L, Alb (48.32±1.33)g/L, and the level of serum was significantly higher than that of the control group (P<0.01).The incidence of adverse reactions was 11.63% and 6.98% in the two groups.ConclusionTraditional Chinese medicine hepatectomy decoction combined with compound glycyrrhizin can effectively treat chronic hepatitis B and improve the level of serum hepatitis-related factors, and the adverse reaction is light, it is worthy of clinical application.