OBJECTIVE　A HPLC method was established for the determination of racecadotril and its impurities.METHODS　A ODS column was used and the mixture of acetonitrile-potassium dihydrogen phosphate (KH2PO4) solution (70∶30) was used as the mobile phase.The detection wavelength was 210 nm.RESULTS　The liner range of the racecadotril was 0.08～0.24 mg*mL-1 and the regression equation was Y=15847X+3873(r=0.9997).The liner range of benzylthiorphan disulphide was 2.40～21.56 μg*mL-1 and the regression equation was Y=1826x+46 (r=0.9999).The measurable lowest limit was 1 μg*mL-1.The average recovery was 100.0%.CONCLUSION　The method was convenient,accurate and specific.

Adenocarcinoma ; drug therapy ; secondary ; surgery ; Adult ; Aged ; Aged, 80 and over ; Antineoplastic Agents ; adverse effects ; therapeutic use ; Benzenesulfonates ; adverse effects ; therapeutic use ; Carcinoma, Renal Cell ; drug therapy ; secondary ; surgery ; Diarrhea ; chemically induced ; Female ; Follow-Up Studies ; Humans ; Kidney Neoplasms ; drug therapy ; pathology ; surgery ; Liver Neoplasms ; drug therapy ; secondary ; Lung Neoplasms ; drug therapy ; secondary ; Male ; Middle Aged ; Niacinamide ; analogs & derivatives ; Phenylurea Compounds ; Pyridines ; adverse effects ; therapeutic use ; Remission Induction

Objective To determine the efficacy of coronary artery bypass grafting (CABG) in children with coronary obstructive disease subsequent to Kawasaki disease. Methods Between Feb 2005 and Sep 2009, 6 children with ischemic heart disease due to Kawasaki disease comprised the study group. The age of patients at operation was ranged from 6 to 12 years with a mean of ( 8.0 ± 2.3 ) years. The preoperative EF was ranged from 0.33 to 0.71 with a mean of 0.57 ± 0.15. There was one case with moderate mitral valve regurgitation. Results All patients survived the procedures. The mean number of bypass graft was 2.0 ±0.6,with 4 internal thoracic arteries and 7 radial arteries. Mitral valve repair was employed in 1 case. The cardisc function ( NYHA and EF) was significantly improved postoperatively. Postoperative CTA showed no graft disease in all cases. Conclusion CABG using the arterial grafts can provide attractive mid-term results in patients with obstructive coronary arteries associated with Kawasaki disease.

Objective We conducted a case-control study to verify the association of rs2070045 SOLR1 polymorphism with PD in the northern Han Chinese population from mainland China.Methods A total of 215 unrelated Han Chinese healthy people and 377 PD patients were included in the study.According to the onset age,the PD patients were divided into 2 groups:early onset PD group (onset age ≤ 50 years old) and late onset PD group (＞50 years old).Clinical data was collected and peripheral blood genomic DNA was extracted using MALDI-TOF-PEX technology.The correlation of rs2070045 SOLR1 with Parkinson's disease was analyzed.Results Genotypic frequencies of rs2070045 SNP were investigated through the data from a total of 592 subjects including 377 PD patients and 215 control participants.Genotypes of TT,TG and GG were found in 52,182 and 143 PD patients respectively and in 31,13 and 71 Healthy controls.No significant differences were found in the genotype and allele frequency for rs2070045 between PD group and healthy control (HC) groups.The genotype for rs2070045 in the early-onset PD group was significantly different from that in the HC group (P=0.036).There were no significant differences in genotype and allele frequency between late-onset PD and HC groups.Moreover,carriers of the G-allele (genotype GG/ TG) of rs2070045 showed a significantly decreased risk of early-onset PD compared to non-carriers according to the Logistic regression analysis.Onset age of carriers (genotype GG/ TG) in late-onset PD group was lower compared to non-carries (P=0.001).Other clinical features such as gender,Hoehn-Yahr stage and disease duration had no statistical difference between carriers and non-carriers of PD patients.Conclusion We have found that rs2070045 SNP of SORL1 was associated with early-onset Parkinson's disease in the northern Han Chinese population.G-allele of rs2070045 SNP decrease the risk for early-onset PD,suggesting G-allele might be a protecting factor of early-onset PD.The influence of SORL1 gene polymorphism on Parkinson's disease warrants further investigation.

Objective To investigate the distribution of measured value and the expected value of spirometry parameters in healthy children aged 5-14 years old in Beijing,and to provide evidence for clinical interpretation precisely.Methods Four hundred healthy children (198 boys and 202 girls) aged 5 to 14 years from the kindergartens and the primary schools in Beijing were selected as subjects.All of the parameters were measured by using Jaeger Masterscreen spirometry machine(Germany).Pulmonary function parameters including forced vital capacity(FVC),forced expiatory volume in 1 second (FEV1),FEV1/FVC,peak expiratory flow(PEF),forced expiratory flow at 50% of vital capacity(FEF50),forced expiratory flow at 75% of vital capacity(FEF75),and the maximal midexpiratory flow(MMEF) were collected for analysis.The expected values of the 7 parameters above were calculated according to Zapletal prediction equations(4-18 years old).The measured value vs.the expected value was calculated.Results Children aged 5 to 12 years had similar height and weight between boys and girls,and the differences were not significant(all P>0.05);while boys were taller and heavier than girls in 13-<14 years old group and 14 years old group,and the diffe-rences were significant(t=3.35,2.05,5.99,2.67;all P<0.05).The mean measured value vs.the expected value of PEF,FVC,FEV1,FEV1/FVC of children in different gender and age groups ranged between 105.0%-114.7%,95.4%-106.8%,104.6%-115.4% and 105.8%-112.6%,respectively.The mean measured value vs.the expected value of small airway function parameters FEF50,FEF75,MMEF was as follows respectively:79.7%-103.7%,70.2%-110.5%,and 81.6%-114.7%.The low limit of normal(LLN) measured value vs.the expected value of the 7 pulmonary function parameters was as follows:PEF 85.0%,FVC 84.7%,FEV1 92.4%,FEV1/FVC 98.4%,FEF50 67.7%,FEF75 60.1%,and MMEF 71.0%.Conclusions The pulmonary function parameters of the healthy children in Beijing are higher than those of the Zapletal prediction.The measured value vs.the expected value of FEV1 92.4%,FEV1/FVC 98.4%,PEF 85.0%,FVC 84.7%,FEF50 67.7%,FEF75 60.1%,and MMEF 71.0% can be used as LLN in 5-14 years old children.

0.05).The frequency of VV genotype of Mn-SOD in the DR(+) group was significantly higher than that in the DR(-) group(92.0% vs 77.1%,P

Objective To observe the effect of extracorporeal shock wave (ESW) on proliferation of chondrocyte in vitro. Methods Chondrocyte from normal rabbit knee using enzymatic digestion was treated with ESW of 0, 1×105, 1.5×105, 2×105, 2.5×105, 3×105, 3.5×105 Pa 0, 300, 600, 900 times in vitro. The pressure and frequency of ESW most promoting chondrocyte proliferation were determined with cartilage cell morphology, HE staining and CCK-8 assay. Results Chondrocyte proliferated most under 1.5×105 Pa and 600 times of ESW, and decreased as the pressure and the frequency increased. Conclusion Chondrocyte is stress-sensitive in vitro. ESW can promote chondrocyte proliferation in certain pressure and frequency

Objective To investigate a new method and to observe the clinical effect of repairing the lower eyelid ectropion assisted with the subcutaneous pedicle flap from temporal region. Methods Since 2007, 24 patients with lower eyelid ectropion were treated with the subcutaneous pedicle flap from temporal region which was the donor area without hairs, including 8 cases of scar infection, 6 cases of trauma, and 10 cases of tumor removal. Among the 24 cases of the flap, the maximum area was 5. 5 cm× 1. 5 cm,and the minimum was 4. 0 cm × 1.0 cm. Results All patients were followed up for 6 months to 3 years.All flaps survived completely with excellent texture and appearance. The donor site was hidden and no obvious malformation of the donor site was observed. Conclusions Because the blood supply of flap is reliable and the incision in the donor site is hidden, the subcutaneous pedicle flap from temporal region pedicled with arterial network of the outer canthus is an ideal donor site for repairing the lower eyelid ectropion with full thickness defects.

Objective: To summarize the characteristics of arrhythmia with the relevant factors affecting its prognosis in patients of apical hypertrophic cardiomyopathy (AHCM). Methods: A total 283 AHCM patients with echocardiography or cardiac magnetic resonance (CMR) conifrmed diagnosis in our hospital from 2005-01 to 2012-08 were summarized. The patients were divided into 2 groups: With arrhythmia group, n=103 and Without arrhythmia group,n=180. The endpoint event was followed-up by clinical and telephone visits in both groups and the relevant risk factors affecting AHCM prognosis were investigated by Cox regression analysis. Results: There were 269 patients ifnished the follow-up investigation, 98 in With arrhythmia group, 171 in Without arrhythmia group, and the death rate was 4.08% vs 1.17%, the occurrence of endpoint event was 18.37% vs 5.58%respectively. Cox regression analysis indicated that age (HR=23.051, 95% CI 1.08-1.068,P<0.005), left atrial diameter (HR=4.113, 95%CI 1.002-1.119,P=0.043) and NT-proBNP (HR= 18.653, 95% CI 3.433-26.650,P<0.005) were the independent risk factors affecting prognosis in AHCM patients. Conclusion: Arrhythmia is one of the common presentations of AHCM, it does not have much impact on survival, while it may cause ventricular ifbrillation and increase the occurrence of cardiovascular events.

Objective　To evaluate the methods of surgical treatment for tumors of brain stem and their curative effects. Methods: 25 cases of tumors of brain stem were analysed retrospectively. Results: There were 18 cases of astrocytomas, 2 cases of cavernous angioma, 1 cases of hemangioblastoma, 1 cases of dermoid cyst, 1 cases of syringopontia, 1 cases of inflammatory granuloma accompanied with hecrosis and 1 cases of AVM of brain stem in 25 cases. Four patients died after operation. Conclusion: Extrinsic tumors of brain stem could be resected totally or subtotally, resulting in good outcome.