Medical research contract is an important part of business between medical research organizations.It is the official document identifying the right and obligations of respective medical research organizations during research activities.It is the legal basis,and is also on the basis of research expenditure.Therefore,it is very important to improve ability of the contract writing in research management.Composing a sound medical research contract has significant importance in research activities.This paper explored the remarkable issues when composing a medical research contract from the respective of management of funding,including how to make the contract more fair,rational,rigorous and legal.

Objective: To establish a method for the determination of metamizole sodium and chlorphenamine malete in zhongganling Tablets. Methods: The sample was determined by ion pair HPLC after it was purified on Sep Pak C 18 microcolumn. The chromatographic conditions included: Hypersil DBS C 18 chromatographic column (250mm?4.6mm, i.d.5?m) as an anlaytical column, methanol mixed solution of sodium heptanesulfonate and glacial acetic acid (600∶400) as a mobile phase, the detection wavelength at 264nm and 1.0mL?min -1 of flow rate. Results: The average recoveries of metamizole sodium and chlorphenamine maleate were 99.6% (RSD was 2.1% and n was 6) and 98.0% (RSD was 1.5% and n was 6), respectively. Conclusion: Metamizole sodium and chlorphenamine maleate can be determined respectively by HPLC with the same mobile phase when Sep Pak C 18 microcolumn solid phase extraction method is used to substitute for the traditional sample pretreatment methods refluxing, extracting and concentrating, and sodium heptanesulfonate ion pair reagent in acid condition is selected.

Objective To describe the prevalence of smoking and smoking cessation in adults of Jiangxi province in 2013.Methods Multi-stage stratified cluster random sampling method was used to select 6 000 individuals aged ≥18 years from 10 chronic and non-communicable disease and risk factor surveillance points of Jiangxi province in 2013.A face-to-face questionnaire survey was carried out to collect information about the risk factors for chronic and non-communicable diseases and 5 997 records were used in final analysis of smoking and smoking cessation.Sample was weighted to represent the adult population of Jiangxi province.The prevalence of different groups were analyzed.Results The prevalence of current smoking of the sample was 21.53％ (1 291/5 997).After complex weighting,the prevalence of smoking was 26.07％ in adults in Jiangxi (95％ CI:23.48％-28.66％),and it was much higher in men (50.62％,95％CI:46.31％-54.94％) than in women (1.46％,95％CI:0.57％-2.35％),the difference was statistically significant (P＜0.05).The differences in smoking prevalence were significant among different age groups (P=0.029),and the smoking prevalence increased with educational level,but decreased with the worse of self-reported health condition.Most current smokers smoked every day (87.16％,95％CI:83.29％-91.03％) and averagely 19.27 (95％ CI:17.69-20.85) cigarettes were smoked daily.The proportion of smokers with average daily consumption ≥20 cigarettes was 64.74％ (95％CI:55.79％-73.70％).The smokers' average age of starting daily smoking was 20.28 (95％CI:19.74-20.82) years old,which was lower in men [20.11 (95％ CI:19.61-20.61) years old] than in women [26.88(95％ CI:24.73-29.03) years old],the difference was statistically significant (P＜0.05).Among the male smokers,27.04％ (95％ CI:18.91％-35.16％) of male smokers was less than 18 years old when they started daily smoking,and the proportion was 17.46％ (95％ CI:0％-37.71％) in female smokers.The smoking cessation rate was 14.80％ (95％CI:10.88％-18.72％) and increased with age,the increase of income level and the worse of self-reported health condition.The successful smoking cessation rate was 10.89％ (95％ CI:8.36％-13.42％).Only 32.10％(95％CI:21.95％-42.25％) of current smokers attempted to quit smoking.The prevalence of passive smoking was 54.71％ (95％ CI:44.20％-65.21％).Conclusion The prevalence of smoking was high in adults in Jiangxi and the proportion of heavy smokers was large.Less smokers quitted smoking and the proportion of current smokers attempting to quit smoking was small.Males and adolescent smokers are targeted populations for tobacco control and special strategy should be taken according to the characteristics of smoking population in Jiangxi.

Objective: To investigate association between adolescent depressive symptoms with circadian rhythm and emotion regulation strategies, and to provide the basis for mental health education for depression. Methods: CES-D, Morning and Evening Questionnaire-5 (MEQ-5) and Emotion Regulation scale (ERS) were administered to 2 398 students from 6 middle schools in Chengdu, Langzhong and Leshan of Sichuan Province. SPSS 21.0 was used to data processing and anlysis. Results: About 37.9% (909/2 398) of adolescents reported depressive symptoms. Prevalence of depressive symptom was higher in female students( χ 2= 25.15 , P <0.01), rural adolescents( χ 2=15.45, P <0.01), adolescents aged 15-18 compared to aged 12-14( χ 2=187.24, P < 0.01 ). There was significant difference in rate of depressive symptoms among adolescents with different circadian rhythms( χ 2= 55.19 , P < 0.01 ), with definite evening rhythm preference was the highest(57.1%). Prevalence of depressive symptoms significantly varied by sleep duration( χ 2=141.99, P <0.01), and were highest in adolescents with sleep duration <6 h(69.4%). The scores of suppression dimension in depressed adolescents were significantly higher than that of non depressive group, while the scores of reappraisal dimension were significantly higher in non depressive group than that of depressive group. Multivariate Logistic regression analysis showed that gender( OR =1.60), age( OR=2.29), suppression( OR = 1.13 ), sleep duration <6 h( OR =5.17), sleep duration 6-8 h ( OR =2.88) were positively associated with depressive symptoms in adolescents. Moderate type( OR =0.53), morning type ( OR =0.55) and cognitive reappraisal ( OR =0.90) were associated with lower rate of depressive symptoms( P <0.05). Conclusion Sleep rhythm delay, lack of sleep and emotion suppression in adolescents are associated with higher risk for depression. Regular sleep habits and reasonable emotion regulation might help to prevent adolescent depression.

Objective:To explore the possible pharmacodynamic material basis and mechanism of Shaogan Fuzi Decoction in the treatment of rheumatoid arthritis through ultra-high performance liquid chromatography-high-resolution tandem mass spectrometry (UPLC-HRMS/MS) combined with network pharmacology and molecular docking method.Methods:The blood components of Shaogan Fuzi Decoction were analyzed by UPLC-HRMS/MS; the targets of blood components in Shaogan Fuzi Decoction were predicted by PubChem database and Swiss Target Prediction database; DrugBank database, Therapeutic Target Database (TTD) and GeneCards database were used to screen rheumatoid arthritis-related targets, and Venn map of common targets was obtained; the protein interaction network was constructed by STRING database, and the key targets and key components were screened; GO function enrichment analysis and KEGG pathway enrichment analysis were performed by DAVID 6.8 database; the "blood component-target-pathway" network was constructed by Cytoscape 3.2.1 software; Autodock software was used to verify the molecular docking between the predicted key components and key targets in the network.Results:Totally 26 blood components of Shaogan Fuzi Decoction, 526 related targets, 478 related targets of rheumatoid arthritis, and 111 common targets were obtained; the key components such as tangeretin, kaempferol, glycyrrhetinic acid, liquiritigenin, quillaic acid and glabrolide were screened, which acted on key targets such as TNF, IL6, VEGFA, PTGS2, JUN and PPARG. They were mainly involved inflammatory response, steroid metabolic process, response to lipopolysaccharide, extracellular region, cytoplasm, RNA polymerase Ⅱ transcription factor activity, steroid bindingand other biological processes. It mainly regulated steroid hormone biosynthesis, PI3K-Akt signaling pathway, apoptosis, IL-17 signaling pathway, rheumatoid arthritisand other signaling pathways. Molecular docking results showed that the key components had good binding activity with key targets.Conclusion:Shaogan Fuzi Decoction may act on TNF, IL6, VEGFA, PTGS2, JUN, PPARG and other targets through tangeretin, kaempferol, glycyrrhetinic acid and other blood components to regulate PI3K-Akt and other signaling pathways, inhibiting cell proliferation and promoting apoptosis, reducing inflammation, to treat rheumatoid arthritis.

Abstract Flexibleis an important classification of flat foot. Flatfoot occurs due to a variety of reasons and causes the medial longitudinal arch to collapse or disappear. However, many children still do not develop a normal foot arch as the grow, and a failure to intervene in a timely manner will greatly harm a child s normal mobility development. Timely detection and intervention are the key to improve the prognosis. There is a lack of uniform quantitative criteria for the diagnosis of flexible flatfoot. Currently, the commonly used diagnostic methods include physical examination, foot printing, plantar pressure test and imaging examination. This article reviews the risk factors, diagnosis, prevention and treatment of Flexible Flatfoot.

Objective:To explore the application effect of integrated mode of medical and nursing in colostomy patients.Methods:Using the convenient sampling method, a total of 60 patients who underwent colostomy in the Second Affiliated Hospital of Wenzhou Medical University from January 2019 to April 2020 were selected as the research objects. The patients who hospitalized from January to August 2019 were included in the control group, and the patients who hospitalized from September 2019 to April 2020 were included in the observation group, with 30 cases in each group. The patients in the control group were treated with routine nursing mode, and the patients in the observation group were treated with integrated mode of medical and nursing. Before discharge, 1, 3 and 6 months after the operation, the status of independent replacement of colostomy bags, scores of the Stoma Self-care Scale-Early Version and the incidence of stoma complications were compared between the two groups.Results:There was no statistically significant difference in the number of patients who changed colostomy bags independently before discharge and 1, 3 and 6 months after the operation between the two group ( P>0.05) . There was no statistically significant difference in the number of cases of periostomy dermatitis, ostomy and mucosal separation and stoma depression between the two groups of patients after surgery ( P>0.05) . The score of the Stoma Self-care Scale-Early Version of the observation group were higher than that of the control group at 3 and 6 months after surgery, and the difference was statistically significant ( P<0.05) . Conclusions:The integrated mode of medical and nursing can improve the self-care ability of patients at 3 and 6 months after the operation , which is worthy of clinical application.

Objective To evaluate the accuracy of bioelectrical impedance analysis(BIA)in measurement of appendicular skeletal muscle mass(ASM)of adults.Methods A total of 836 adults aged 18-42 years were recruited in Guangzhou using a convenient sampling method from April 2021 to September 2022.ASM was measured using BIA and Dual-energy X-ray absorptiometry(DXA).Using DXA as the standard method,the consistency between the BIA and DXA measurements was evaluated by intra-class correlation coefficients(ICCs)and Bland-Altman analysis in logarithmically transformed data,in order to evaluate the accuracy of BIA in ASM measurement.Receiver operating characteristic curve was plotted to evaluate the diagnostic value of BIA for screening low muscle mass.Results A total of 774 individuals were included for analysis finally.ICCs for ASM measured by BIA and DXA were 0.774 and 0.667 in males and females,respectively.Mean ratios(limits of Agreement)of ASM were 0.94(0.80-1.10)and 0.91(0.78-1.05)in males and females,respectively.Area under curve of BIA for screening low muscle mass were 0.91 and 0.94 in males and females,respectively.The optimal cut-off values of Z-score by BIA for males and females were-0.57 and-0.66,respectively.Sensitivity and specificity for males were 82.5%and 86.0%,while being 86.8%and 93.8%,for females.Conclusion BIA shows a moderate consistency with DXA for measuring ASM in adults.Furthermore,BIA yields a good diagnostic value in identifying low muscle mass in adults aged 18-42 years.

Plant fungal pathogens secrete numerous proteins into the apoplast at the plant-fungus contact sites to facilitate colonization.However,only a few secretory proteins were functionally characterized in Magnaporthe oryzae,the fungal pathogen causing rice blast disease worldwide.Asparagine-linked glycosylation 3(Alg3)is an a-l,3-mannosyltransferase functioning in the N-glycan synthesis of N-glycosylated secretory proteins.Fungal pathogenicity and cell wall integrity are impaired in Aalg3 mutants,but the secreted proteins affected in Aalg3 mutants are largely unknown.In this study,we compared the secretomes of the wild-type strain and the Aalg3 mutant and identified 51 proteins that require Alg3 for proper secretion.These proteins were predicted to be involved in metabolic processes,interspecies interactions,cell wall organization,and response to chemicals.Nine proteins were selected for further validation.We found that these proteins were localized at the apoplastic region surrounding the fungal infection hyphae.Moreover,the N-glycosylation of these proteins was significantly changed in the Aalg3 mutant,leading to the decreased protein secretion and abnormal protein localization.Furthermore,we tested the biological functions of two genes,INV1(encoding invertase 1,a secreted invertase)and AMCase(encoding acid mammalian chinitase,a secreted chitinase).The fungal virulence was significantly reduced,and the cell wall integrity was altered in the Ainv1 and Aamcase mutant strains.Moreover,the N-glycosylation was essential for the function and secretion of AMCase.Taken together,our study provides new insight into the role of N-glycosylated secretory proteins in fungal virulence and cell wall integrity.