Objective To study the effect of Mushao composition on ?-EP and CCK-8 in the caudex dorsalis of rats with pain after fracture operation,and explore its mechanism.Methods The male Wistar rats were randomly divided into control group,model group,Mashao composition group and tramadol group.The Brennan model was adopted.The level of the ?-EP and CCK-8 were determined by the method of radioimmunity.Results Compared with model group,Mushao composition could increase level of ?-EP in the caudex dorsalis,while decrease level of CCK-8.Conclusion Mushao composition could increase the content of ?-EP and reduce the content of CCK-8,so to analgesia in rats model of pain after fracture operation.

Objective To study the expression of multidrug resistance associated protein 1 (MRP1) and MRP2 in the peripheral blood mononuclear cells of children with intractable epilepsy (IE).Methods During Nov.2010 to Oct.2013,50 children with I E were collected as the experimental group,simultaneously 50 children with epilepsy controlled by the anti-epileptic drugs (AEDs) and 50 healthy children without epilepsy were collected as the control group from the outpatient or inpatient of Xuzhou Children's Hospital.The expressions of MRP1 and MRP2 in the peripheral blood mononuclear cells of children were detected by reverse transcriptase polymerase chain reaction and Western blot.Results 1.The mean relative expression of MRP1 and MRP2 mRNA in the peripheral blood mononuclear cells of children with IE (0.795 ± 0.042,0.804 ± 0.023) were higher than those in epilepsy controlled by AEDs (0.682 ± 0.030,0.675 ± 0.021) and healthy children without epilepsy (0.665 ± 0.031,0.654 ± 0.029) (all P ＜0.001).2.The mean relative expression of MRP1 and MRP2 protein in the peripheral blood mononuclear cells of children with IE (2.027 ±0.034,1.902 ±0.021) were higher than those in epilepsy controlled by AEDs(1.131 ±0.042,1.086 ± 0.027) and healthy children without epilepsy (1.093 ± 0.023,1.045 ± 0.018) (all P ＜ 0.001).3.There was no difference in the expression of MRP1,MRP2 mRNA and proteins between the children with epilepsy controlled by AEDs and healthy children without epilepsy (all P ＞ 0.05).Conclusions MRP1 and MRP2 over-expression in the peripheral blood mononuclear cells of children with IE may be associated with drug-resistance mechanism for medically intractable epilepsy.

Objectives To investigate medical students' satisfaction degree clinical practice,to find out the shortages of the clinical practice teaching,and to further put forward the measures of clinical practice.Methods By using a selfdesigned questionnaire,115 student interns were surveyed with anonymous questions,to collect data about the satisfaction degree of the hospital teaching conditions,conditions of teachers,practice quality of clinical departments,management department intern management work,the practical effect and views of clinical practice and other information.99 effective copies were retrieved using Excel analyze data.Results Interns' overall satisfaction with clinical practice is not high,and the satisfaction degree to the management department' work is the lowest,the satisfaction degree to the conditions of teachers of hospital is the highest.Conclusion Medical students'clin-ical practice satisfaction needs improving.To this end,we should improve the system and teaching conditions and strengthen management to meet the needs of students and improve their practice quality.

Objective Through constructing prokaryotic expression vector pET-30a-GPI-B7-1, to gain purified GPI-B7-1 fusion protein so as to confirm the tumor immune effect. Methods The DNA fragment encoding the signal for GPI-anchor attachment of hPLAP-1 and the cDNA encoding the human costimulatory molecule CD80 ( BT-1 ) were cloned from fresh placenta and human peripheral blood monocytes (PBMC) respectively. The two fragment were annealed to form a fusion gene (GPI-BT-1) by PCR. Then the fusion gene was inserted into the prokaryotic expression vector pET-30a, resulting in pET-30a-GPI-BT-1. Transfer to E. coli BL21, purified fusion protein were analysed by SDS-PAGE and Western blot. Results Agarose gel electrophoresis map of GPI and BT-1 PCR products show that GPI goal gene strap was seen at 133bp region and BT-1 goal gene strap at 792 region. Identification of recombinant pET-30a-GPI-B7-1 by restriction enzyme and PCR illustrate two goal fragment for 5000 bp and 900 bp, to realize the expression of fusion gene ( GPI-B7-1 ) at the E. coli BL21. The fusion protein was successfully produced in the pET expression system induced by IPTG and purified by Ni2 + -NTA agarose column. By SDS-PAGE and Western blot analysis, the observed molecular weight of the fusion protein was 38 kDa. Conclusion The purified GPI-B7-1 fusion protein can be obtained from E. coli BL21 transfered by prokaryotic expression vector pET-30a-GPI-B7-1, which will prove useful tool for the study of tumor immune therapy.

Objective To explore the changes of multidrug resistant-associated protein (MRP) 1 expression and MRP2 expression in the peripheral blood mononuclear cells in intractable epileptic children after accepting the Levetiracetam (LEV) add-on therapy.Methods From June 2012 to September 2015,68 intractable epileptic children who had been diagnosed at the Outpatient Department of the Xuzhou Children's Hospital were randomly selected and given the LEV add-on therapy.The expressions of MRP1 and MRP2 in their peripheral blood mononuclear cells were detected by real-time fluorescence quantitative polymerase chain reaction and Western blot before the LEV add-on therapy and 6 months after the LEV add-on therapy.Results (1) Compared to the expressions of MRP1 mRNA and MRP2 mRNA in the peripheral blood mononuclear of intractable epileptic children before therapy,the expressions of MRP1 mRNA (0.23 ± 0.02) and MRP2 mRNA (0.17 ±0.03) after therapy were obviously down-regulated with significant differences(tMRP1 =32.77,P ＜ 0.01;tMRP2 =26.73,P ＜ 0.01).(2) The relative expressions of protein of MRP1 and MRP2 in the peripheral blood mononuclear of intractable epileptic children before therapy were 0.59 ± 0.03,0.53 ± 0.02 respectively,and they were 0.39 ± 0.03,0.38 ± 0.02 after therapy.Compared with those before therapy,the protein expressions of MRP1 and MRP2 were down-regulated,and the differences were significant (tMRP1 =11.55,P＜0.01;tMRP2 =9.87,P＜0.01).Conclusions The expressions of MRP1 and MRP2 mRNA and protein in the peripheral blood mononuclear cells in some intractable epileptic children can be down-regulated if patients receive the LEV add-on therapy,and LEV may control the seizures of intractable epileptic children by down-regulating the expressions of MRP1 and MRP2,then reduce the occurrence and development of drug-resistant epilepsy.

Leigh syndrome (French-Canadian type, LSFC) is a rare autosomal recessive hereditary severe neurological disorder that begins in infancy. Herein we report a case with LSFC in China. The patient was 8 months old, male, whose clinical manifestations included delayed development, low muscle tone, unstable vertical head, inability to sit alone, cognitive impairment, slightly smaller forehead, oblique eyes, epilepsy, etc. Gene sequencing results showed that the LRPPRC gene in the infant had complex heterozygous mutations of c.2989G>A (newly reported) and c.4078G>A. Combined with the clinical manifestations, gene mutations and literatures, the infant was diagnosed as LSFC, and symptomatic rehabilitation was performed. The results of genetic testing can contribute to the early diagnosis and genetic counseling of LSFC patients, and help reduce the burden on the patients and their families.

Objective Preliminarily discussing the effects of VEGF and SOX2 on metastasis and progno-sis of squamous cell lung carcinoma(SCLC).Methods Using immunohistochemical method to detect 47 cases of pulmonary squamous cell carcinoma and 30 cases of para-carcinoma tissue in the expression of VEGF and SOX2, using statistical methods to analyze the expression of VEGF and SOX2 and the relationship between clinical parame-ters and its relationship with prognosis. Results The positive expression rates of VEGF,SOX2 in SCLC tissues were higher than adjacent normal tissues.There was a significant correlation between VEGF and SOX2 expression. VEGF expression was associated with lymph node metastases and TNM stage.SOX2 expression was associated with tumor differentiation and lymph node status.Survival analysis indicated that VEGF(+)/SOX2(+)patients had the worst prognosis.Furthermore,multivariate analysis suggested that tumor diameter and lymph node metastases were independent prognostic factors for SCLC. Conclusion The expression of VEGF was positively correlated with lymph node metastasis and clinical stage,the expression of SOX2 was positively correlated with tumor differentia-tion degree and lymph node metastasis,and high expression of VEGF and SOX2 may indicate lung squamous can-cer patients with poor prognosis.

Objective To study the clinical features and postoperative complications for gastric carcinoma in the patients older than 65 years. Methods From January 2005 to January 2007, 65 elderly gastric carcinoma cases underwent surgical resection, the age related preoperative and postoperative complications were analyzed. Result The incidence of preoperative complications in elderly gastriccarc inoma patients is 83%, compared with younger group of 59%; Preoperatively, 52% elderly cases presented with two or more complications. The incidence of hypertension was the highest (40%), the radical curative rate for the elderly group was 86% as compared with younger group of 93%. The postoperative complications in elderly group was 37%. In elderly cases, postoperative complications were common in those suffering from preoperative complications such as hypertension, diabetes, respiratory diseases, anaemia, hypoalbuminemia. Conclusion The age itself is not a single influential factors indicating postoperative complications. There was no significant difference in the morbidity and mortality between elderly and younger gastric carcinoma cases undergoing a surgery.

Objective To establish a rapid,high-efficiency and clean way to monitor and pretreat the radioactivity in foods.Methods Food samples,20 kg each of cabbage,crucian,shrimp,pork and 20 L of milk,were collected around Qinshan nuclear power plant,totaling 10 samples for each food.Each type of foods was arranged in two groups each with 10 samples.Samples were pretreated using traditional ashing method (TAM) and microwave ashing method (WAM) separately.HDEHP were used for 90Sr separation and measurement.Calculations were made for the time spent on food pretreatment.The ash-fresh ratio and the recovery rate of 90Sr by the two different method were calculated,with the quality of ash being evaluated.Results The mean time spent on pretreatment was cabbage 20 h,crucian 54 h,shrimp 46 h,pork 58 h and milk 74 h for TAM group,and cabbage 8.5 h,crucian 26 h,shrimp 23 h,pork 26 h and milk 30 h for WAM group,respectively.The time spent by WAM was half the time less than by TAM,especially for animal edible product.The ash-fresh ratios from WAM group were higher than from TAM group.The recovery rates of 90Sr from WAM group in the analytical process were all above 75％,higher than from TAM group.Ashes produced by WAM were hoary,uniform,carbon residue-free and fully ashed.Conclusions WAM pretreatment can pretreat food rapidly,efficiently,cleanly with less loss and better ashing effect.These can meet the requirement of rapid pretreatment of radioactivity in food.

Objective:To investigate the efficacy of dapagliflozin in patients with diabetic nephropathy.Methods:A total of 82 patients with early diabetic nephropathy who were treated in Wuhu No.1 People′s Hospital from January 2020 to December 2021 were selected as the research objects, and they were divided into the conventional group (41 cases) and the dapagliflozin group (41 cases) according to the random number table method. The patients in the conventional group were given original hypoglycemic treatment and the patients in the dapagliflozin group were given dapagliflozin treatment on the former basis, the patients in the two groups were treated for 12 weeks. The levels renal function index, blood glucose index, glomerular filtration index and the occurrence of adverse reactions during the treatment period were compared between the two groups.Results:After treatment, the total clinical effective rate in the dapagliflozin group was higher than that in the conventional group: 95.12%(39/41) vs. 78.05%(32/41), there was statistical difference ( χ2 = 4.96, P<0.05). The levels of urine albumin/creatinine (UACR), blood urea nitrogen (BUN) , serum creatinine (SCr), fasting blood glucose (FPG), 2 h postprandial blood glucose (2 h PG), glycosylated hemoglobin (HbA 1c), cystatin C (Cys-C) in the dapagliflozin group were lower than those in the conventional group: (49.73 ± 11.65) mg/g vs. (67.26 ± 10.04) mg/g, (6.96 ± 0.54) mmol/L vs. (7.25 ± 0.48) mmol/L, (76.82 ± 2.86) μmol/L vs. (78.59 ± 3.06) μmol/L, (8.58 ± 0.18) mmol/L vs. (8.80 ± 0.32) mmol/L, (8.03 ± 0.42) mmol/L vs. (8.56 ± 0.44) mmol/L, (7.06 ± 0.57)% vs. (7.52 ± 1.06)%, (1.47 ± 0.50) mg/L vs. (1.84 ± 0.55) mg/L, there were statistical differences ( P<0.05). The level of glomerular filtration rate (GFR) between the two groups had no significant differences ( P>0.05). The incidence of total adverse reactions in dapagliflozin group was lower than that in control group: 7.32%(3/41) vs. 24.39%(10/41), there was statistical difference ( P<0.05). Conclusions:Dapagliflozin has a good effect in the treatment of patients with early diabetic nephropathy. It can lower glucose, improve Cys-C, reduce urinary microalbumin and protect renal function.