【Objective】To observe the effect of plasma ?-endogenous peptides (?-EP) on gestational function in endometriosis(EMT) rats.【Methods】 Female SD rats at the third estrous cycle were used to establish EMT model.Then 20 EMT rats were equally randomized into the model group and naltrexone(an opioid receptor antagonist) group,and other 10 rats were in the pseudo-operation group.Naltrexone group was given naltrexone 2?mg?kg~-1?d~-1 by gastric gavage during proestrus and normal saline at other time,and the model group and pseudo-operation group were given normal saline for one month.Serum levels of ?-EP,luteinizing hormone(LH) and prolactin(PRL) were examined during proestrus,and serum progesterone(P) level and gestational function were observed after estrus.【Results】Serum levels of ?-EP and PRL increased and LH decreased during proestrus,and serum P level also decreased after estrus in the model group(P

【Objective】To investigate the therapeutic effect of Qiangxin Prescription(QP)on rabbits with heart failure induced by volume overload.【Methods】Twenty New Zealand male rabbits were randomized into four groups:the control group,QP group(QP 2.6?g/kg),western medicine group(Digoxin 20??g/kg and furosemide 1mg/kg)and QP+western medicine group(QP 2.6?g/kg,Digoxin 20??g/kg and furosemide 1?mg/kg).Rabbit models with heart failure induced by volume overload were established.Six hours after the modeling,the treatment groups were given the corresponding drugs according to the experimental design,the treatment lasting 7 days.Four-channel physiologic instrument was used to examine the heart rate(HR),aortic systolic blood pressure(SBP),aortic diastolic blood pressure(DBP),left ventricular systolic pressure(LVSP),left ventricular diastolic pressure(LVDP),the maximum rate of left ventricular pressure rise(+dp/dt_(max)),the maximum rate of left ventricular pressure decrease(-dp/dt_(max))and the maximum rate of left ventricular pressure change(?dp/dt_(max)).Meanwhile,the serum contents of superoxide dismustase(SOD)and malondialdehyde(MDA)were detected.【Results】The difference was insignificant in the body weight in different groups after the modeling but the body weight in western medicine group was decreased one week after medication(P

Objective:To study the influence of rutin in the morphology of renal tissue of the diabetic mice induced by streptozotocin(STZ), and to clarify the effect of rutin on the kidney tissue damage.Methods:Twelve mice of the total 70 Kunming mice were used as normal group, the other were used to estabish type 1 diabetes mouse models by intraperitoneally injected with STZ (62.5 mg·kg-1), once daily for 5 d.The successfully established model mice were randomly divided into model group,low dose (50 mg·kg-1)of rutin group, high dose (100 mg·kg-1) of rutin group and irbesartan group (45 mg·kg-1).The mice in model group and normal group were given the carboxy methyl cellulose(CMC) and the other mice were given drugs by intragastric administration once daily for 8 weeks accordingly.The weight and blood glucose of the each mouse were determined.Full automatic biochemical analyzer was used to detect the levels of serum creatinine (Cre) and blood urine nitrogen (BUN) of the mice , and the kidney index was calculated.The morphology of renal tissue was observed by HE staining, Masson staining and electron microscope.Results:After injection of STZ,the model success rate was up to 98%.Compared with normal group, there was no significant difference in the weight of the mice in other groups before administration(P>0.05).After administration of rutin, the weights of the mice in model group, low dose of rutin group, high dose of rutin group and irbesartan group were significantly decreased (P<0.05).Compared with model group, the levels of blood glucose of the mice in low and high doses of rutin groups were significantly decreased(P<0.05);the levels of Cre and BUN were significantly reduced (P<0.05);the kidney index of the mice in high dose of rutin group was significantly decreased (P<0.05).Compared with normal group,the kidney tissue of the mice in model group was seriously damaged;glomerular was weaked, the kidney tissue fibrosis was serious, glomerular basement membrane was diffusely thickened and foot process was coalesced or overgrow.Compared with model group,the degree of injury of the mice in low and high doses of rutin groups were significantly improved, especially in high dose of rutin group.Conclusion:Rutin can improve the renal function of diabetic mice induced by STZ and reduce the degree of renal tissue damage in the diabetic mice

Objective:To investigate the effects of cell adhesion molecule 1 (CADM1) promoter methylation in ovarian cancer on gene transcription and protein expression levels, and the regulation mechanism of mirNA-148A on CADM1 methylation levels.Methods:A total of 86 patients with ovarian cancer who received surgical treatment in the Affiliated Hospital of Hangzhou Normal University from Jun. 2018 to Jun. 2020 were selected as study subjects. The methylation level of CADM1 gene CpG island in ovarian cancer tissues and adjacent tissues was quantitatively detected. Quantitative real-time polymerase chain reaction was used to detect the mRNA and mirNA-148a expressions of CADM1 gene. The CADM1 gene and DNMT1 protein levels were detected by Western blot. Human ovarian cancer SKOV3 cells were treated with different concentrations of methyltransferase inhibitors (5-Azacytidine, 5-aza) , and CADM1 mRNA expression was detected 72 h later. Human ovarian cancer cell lines SKOV3 were transfected with mir-335-5p mimic, inhibitor and negative control respectively. Then mir-335-5p expression level and CADM1 gene methylation level were detected after transfection.Results:The methylation level of CADM1-1 island in ovarian cancer tissues was 2.89%±0.82%, significantly higher than that of paracancerous normal tissues 1.86%±0.68% ( t=4.936, P<0.001) , and that of CADM1-2 island in ovarian cancer tissues was 3.12%±0.93%, significantly higher than that of paracancerous normal tissues (2.27%±0.69%, t=5.114, P<0.001) . Pearson correlation analysis showed that the methylation level of CADM1-1 island and CADM1-2 island in ovarian cancer tissues was significantly negatively correlated with the relative mRNA expression (r was -0.615 and -0.582, respectively, and both P<0.001) , and with the protein expression level of CADM1 (r was -0.521 and -0.612, respectively, and both P<0.001) . The relative expression level of mirNA-148a in ovarian cancer tissues was 1.53±0.42, significantly lower than that in paracancer tissues (2.59±0.73, t=6.113, P<0.001) . After treatment with different concentrations of 5-AZA, mRNA expression levels of CADM1 gene in SKOV3 cells were significantly higher in the low concentration group and the high concentration group than in the control group (both P<0.05) , and mRNA expression levels in the high concentration group were significantly higher than in the low concentration group ( P<0.05) . After mirNA-148A transfected SKOV3 cells, the relative expression levels of mirNA-148a in the mimic group were significantly increased, while those of inhibitor group were significantly decreased ( P<0.001) . The DNMT1 expression level and CADM1 gene methylation level of mimic group were significantly decreased, while those of inhibitor group were significantly increased (P<0.001) . Conclusion:In ovarian cancer, miRNA-148a can regulate the DNA methylation level of CADM1 gene by acting on the downstream target protein DNMT1, thus affecting the mRNA and protein expression levels of CDM1 gene and participating in the pathogenesis of ovarian cancer.

Objective     To assess the long-term results and relevant influencing factors of extended thymectomy and medicine-alone treatment of non-thymomatous myasthenia gravis (MG) patients. Methods     We retrospectively analyzed the clinical data of 174 patients with non-thymomatous MG diagnosed and treated in our department from December 2009 to April 2017, including 81 males and 93 females, aged 13-88 (47.1±17.8) years. According to the different treatment methods, the patients were divided into two groups: an operation group (91 patients receiving extended thymectomy) and a medicine-alone group (83 patients receiving medical therapy alone). The efficacy was evaluated according to the Myasthenia Gravis Foundation of America (MGFA). Survival curves of the patients were plotted using the Kaplan-Meier method to evaluate the remission rate and survival rate. Cox regression analysis was used to assess the influencing factors of the outcomes. Results     The patients were followed up for 3 to 94 (39.1±26.9) months. As a result, 29 patients (31.9%) achieved complete remission in the surgery group and 13 patients (15.7%) were completely relieved in the medicine-alone group (P=0.014). Further analysis showed that treatment pattern (P=0.018) and MG type (P=0.021) were the main factors related to the efficacy. Conclusion     For patients with non-thymomatous MG, extended thymectomy is superior to the medicine-alone in terms of complete remission rate and the postoperative immunosuppression ratio.