Objective To investigate the expression and clinical significance of multiple endocrine neoplasia type 1(MEN1)gene in breast cancer.Methods The Cancer Genome Atlas(TCGA)database was used to analyze the relationship between MEN1 gene and clinicopathological characteristics of breast cancer.Kaplan-Meier method was used to observe the effect of MEN1 on survival of breast cancer patients.Gene Ontology(GO),Kyoto Encyclopedia of Genes and Genomes(KEGG),and gene set enrichment analysis(GSEA)were used to predict the function and signaling pathways of MEN1 related and interacting genes.Tumor Immune Estimation Resource(TIMER)and single sample gene set enrichment analysis(ssGSEA)were used to investigate the correlation between the level of immune infiltration and MEN1 expression in breast cancer.Results MEN1 was highly expressed in breast cancer patients,and its expression level was related to PAM50 subtype and menopause status(both P＜0.05).Kaplan-Meier survival analysis showed that high MEN1 expression was associated with poor clinical outcome(P=0.019).GO and KEGG enrichment analysis showed that MEN1 related and interacting genes were involved in biological processes(histone modification,histone-lysine methylation),cell components(methyltransferase complex and histone methyltransferase complex),molecular functions(histone-methyltransferase activity),and functional pathways(transcriptional disorders in tumors).GSEA identified that the highly expressed MEN1 phenotype was involved in vesicle-mediated transport,complement cascade,B-cell receptor signaling,lymphocyte-non-lymphocyte interaction,interleukin signaling,and cytokine signaling pathways in the immune system.CancerSEA single cell sequencing results indicated that the expression of MEN1 was positively correlated with angiogenesis in MDA-MB-231 cells(P＜0.05).TIMER analysis found that MEN1 in breast cancer was negatively correlated with the infiltration levels of macrophages and CD8+T cells,and positively correlated with the infiltration level of CD4+T cells(all P＜0.05).ssGSEA showed that the infiltration levels of 18 types of immune cells were negatively correlated with MEN1 expression(all P＜0.05).Conclusion High MEN1 level is associated with poor survival and immune infiltration in breast cancer patients.

Pharmacoepidemiology is a scientific discipline that applies epidemiological principles and methods to study the utilization and effects of pharmaceuticals in populations.It plays a crucial role in promoting rational drug use and improving public health outcomes.High-quality pharmacoepidemiological research relies on rigorous methodological frameworks.Chinese Pharmaceutical Association(CPA)has officially initiated the development/revision of the of the Guide on Methodological Standards in Pharmacoepidemiology in China(2nd edition)in 2024.This revision project was supported by the Pharmacoepidemiology Committee of CPA,and was led by the Department of Epidemiology and Biostatistics at Peking University School of Public Health,which provided methodological guidance,in collaboration with multidisciplinary experts from across the country.Building on the experience of the 1st edition's development,the working group conducted a qualitative systematic review,to extract key information from global pharmacoepidemiology-related guidelines,laying the foundation for the development/revision proposals of the 2nd edition.Subsequently,through two rounds of Delphi method expert consultations and qualitative interviews,alongside extensive discussions within the working group,the draft revision of the guideline was created.Finally,through an expert consensus meeting using the Nominal Group Technique(NGT),a consensus was reached,resulting in a methodological guideline that integrates international perspectives with local applicability for pharmacoepidemiological research in China.The 2nd edition consists of 41 entries,including 8 primary entries,20 secondary entries,and 13 tertiary entries.It comprehensively covers key aspects such as study protocol development,study implementation,adverse event reporting,research report writing,and dissemination of study findings.Additionally,it addresses specific application scenarios and topics,as well as the application of artificial intelligence and real-world studies.

Pharmacoepidemiology is an interdisciplinary discipline that applies epidemiological research methods to evaluate the application and effect of drugs within population.Standardizing pharmacoepidemiological research methods is crucial for ensuring the quality of research and promoting the development of the discipline.The Pharmacoepidemiology Professional Committee of Chinese Pharmaceutical Association developed the Guide on Methodological Standards in Pharmacoepidemiology(1st edition),in 2019,but has not been updated in over five years.Other,countries/regions such as Europe,America,Japan and South Korea have made a lot of progress in developing and updating the guidelines.Therefore,the rapid development of pharmacoepidemiology in our country and the growing need to align with international standards make it essential to update the guidelines.The second edition of the guidelines was developed through a process that included systematic reviews,practical surveys,and multidisciplinary collaboration.Compared with the first edition,the updated version has made many important changes in research design,data sources,specific application scenarios and more,and added new contents such as the application of artificial intelligence.The purpose of this paper is to emphasize the necessity of updating the guidelines,selecting important changes and formulating interpretation plans.It aims to provide references for relevant professionals to comprehensively understand and apply the new guidelines,and to promote the standardized development and quality of pharmacoepidemiologic research in our country,further advancing the field.

It has been not been updated for nearly 5 years since the Pharmacoepidemiology Professional Committee of the Chinese Pharmaceutical Association released the Guide on Methodological Standards in Pharmacoepidemiology in China(1st edition)in 2019,and an update is urgently needed.This study adopts a systematic review approach to comprehensively search for global pharmacoepidemiology methodological guidelines and analyze their development status.By extracting the frameworks and key elements of the guidelines,the China's guide was compared with other included guidelines,its shortcomings were analysed,and pragmatic and feasible suggestions for improvement in line with China's national conditions,were proposed in order to provide references for updating China's guide.A systematic search was conducted by searching PubMed,Embase,CNKI,WanFang Data and 17 official websites of international academic organizations for pharmacoepidemiology and regulatory agencies from countries or regions including Europe,the United States,Japan,and China,etc.,and relevant guidelines or standards were screened based on predefined inclusion and exclusion criteria,resulting in the inclusion of 33 methodological guidelines or standards for pharmacoepidemiological studies.A qualitative synthesis approach was then employed to extract core elements from the guidelines through thematic categorization and content summarization,followed by a descriptive comparative analysis.The results indicate that the 1st edition of the China's guide provides relatively comprehensive guidance on adverse drug reaction reporting and publication of research findings.However,there are gaps in study protocol development,data analysis during study implementation,study reporting,and specific study scenarios.By integrating and drawing upon the latest international pharmacoepidemiology methodology guidelines while balancing comprehensiveness,practicality,and user-friendliness,this study provides recommendations for updating the China's guide.

Medical Immunology,characterized by its fundamental and cutting-edge nature,not only lays a solid foundation for students to learn other basic medical courses and clinical medicine curricula,but also serves as a powerful platform for cultivating deep learning and scientific thinking.This study aims to leverage Medical Immunology as a knowledge platform,adopt an AI+en-hanced flipped classroom approach,and build a thought-oriented classroom to enhance students'thinking skills,thereby meeting the high-quality requirements of the new medical education initiative for medical students.

Pharmacovigilance impact research(PIR),as an important application field of pharmacoepidemiology,has attracted continuous attention in recent years from drug regulatory authorities,pharmaceutical manufacturers,and the academic community both domestically and internationally.This paper provides an interpretation of PIR based on the Guide for Methodology in Pharmacoepidemiologic Research(2nd edition).First,an overview of the implications of PIR will be provided,focusing on the pathways of pharmacovigilance activities and the significant importance of conducting PIR.Second,it reviews commonly used study designs and presents illustrative case examples.Building on this,the specific statistical considerations relevant to PIR were discussed.Finally,the challenges and prospects of conducting pharmacovigilance impact studies in a scientific and standardized manner are summarized.Compared with the previous edition,the 2nd edition has expanded the application scenarios of pharmacoepidemiology to include new areas such as PIR.Drawing on the guideline content and practical experience,this paper provides a detailed introduction and case analysis of PIR,serving as a reference for researchers engaged in this field.

Objective:To investigate the treatment and prognosis of esophageal cancer patients with pulmonary resection history.Methods:The retrospective and descriptive study was conducted. The clinicopathological data of 58 esophageal cancer patients with pulmonary resection history who were admitted to Chest Hospital Affiliated to Shanghai Jiaotong University School of Medicine and Jiangxi Provincial People's Hospital from May 2019 to April 2024 were collected. There were 52 males and 6 females, aged (69±3)years. Observation indicators: (1) surgical and postopera-tive conditions; (2) postoperative pathological examination results; (3) follow-up; (4) stratified analysis. Comparison of measurement data with normal distribution between groups was conducted using the independent sample t test. Comparison of count data between groups was conducted using the chi-square test or Fisher exact probability. Comparison of ordinal data between groups was conducted using the non-parametric rank sum test. The Kaplan-Meier method was used to plot survival curve and calculate survival rate, and the Log-rank test was used for survival analysis. Results:(1) Surgical and postoperative conditions. Of the 58 esophageal cancer patients, 49 patients underwent transthoracic approach (26 cases of ipsilateral approach and 23 cases of contralateral approach of pulmonary resection history), and 9 patients underwent mediastinoscopic-laparoscopic approach. There were 57 cases with R 0 resection and 1 case with R 2 resection because of tumor invading carina. The total operation time of 58 patients was (246±27)minutes, and the volume of intraoperative blood loss was (114±29)mL. There was no unplanned reoperation or perioperative death for all patients. The duration of postoperative hospital stay of 58 patients was (10.4±4.6)days, and time for intensive care unit stay was (1.4±0.5)days, and no patient readmitted to intensive care unit due to changes in conditions. The postoperative total incidence of complications of 58 patients was 41.4%(24/58). The Clavien-Dindo grading of complications for all patients was 1-2 grade. (2) Postoperative pathological examination results. Results of postoperative pathological examination showed there were 51 cases of squamous cell carcinoma, 6 cases of adenocarcinoma, and 1 case of melanoma. Number of lymph node dissected of 58 patients was 27±6. The ratio of patient with positive lymph node was 37.9%(22/58). One patient may experience more than 1 region of positive lymph node metastasis. Results of postoperative pathological staging showed 5 cases of ⅠA stage, 2 cases of ⅠB stage, 13 cases of ⅡA stage, 15 cases of ⅡB stage, 4 cases of ⅢA stage, 16 cases of ⅢB stage, and 3 cases of ⅣA stage. Thirteen of the 58 patients underwent neoadjuvant therapy, with the pathological staging as 6 cases of Ⅰ stage, 4 cases of Ⅱ stage, 3 cases of ⅢB stage after therapy. Results of postoperative tumor regression grade for the 13 patients with neoadjuvant therapy showed 4 cases of grad 0, 3 cases of grade 1, 6 cases of grade 2. (3) Follow-up. All 58 patients were followed for 24 (4, 50)months, and no patient died within 90 days after surgery. During the follow-up period, 19 patients experienced tumor recurrence and metastasis and 17 patients died. Twenty-one patients underwent postoperative adjuvant therapy, including 7 cases with chemoradiotherapy, 7 cases with chemotherapy, 3 cases with chemotherapy and immunotherapy, 2 cases with immuno-therapy, 2 cases with radiotherapy. The postoperative 1-, 2-year overall survival rates of the 58 patients were 91.3%, 78.7%, respectively, of whom undergoing McKeown surgery and mediastinoscopic-laparoscopic surgery with postoperative 1-, 2-year overall survival rates as 89.2%, 83.1% and 85.7%, 53.6%, respectively. The postoperative 1-, 2-year esophageal cancer specific survival rates for patients undergoing McKeown surgery and mediastinoscopic-laparoscopic surgery were 94.4%, 87.9% and 85.7%, 71.4%, respectively. There was no significant difference in postoperative 1-, 2-year overall survival rates and postoperative 1-, 2-year esophageal cancer specific survival rates between patients undergoing McKeown surgery and mediastinoscopic-laparoscopic surgery ( P>0.05). (4) Stratified analysis. Of the 49 patients underwent transthoracic approach for esophageal cancer, there were significant differences in surgical method, surgical type, time of chest surgery, cases with upper mediastinal lymph node dissection, and duration of postoperative hospital stay between patients with pulmonary resection history as ipsilateral approach and contralateral approach ( χ2=11.74, 11.68, t=-2.25, χ2=8.45, t=-2.17, P<0.05), and there was no significant difference in total operation time, volume of intraoperative blood loss, the number of lymph node dissected, post-operative total complications, and postoperative pathological TNM staging ( P>0.05). For patients with pulmonary resection history as ipsilateral approach and contralateral approach, the postopera-tive 1-, 2-year esophageal cancer specific survival rates were 95.5%, 95.5% and 81.4%, 71.1%, showing a significant difference between them ( χ2=5.63, P<0.05). Conclusions:The transthoracic approach and mediastinoscopic-laparoscopic approach are safe and feasible for esophageal cancer patients with pulmonary resection history. Compared with patients with pulmonary resection history as contralateral approach, patients with pulmonary resection history as ipsilateral approach have a higher ratio of McKeown surgery, minimally invasive surgery and upper mediastinal lymph node dissection, shorter time of chest surgery and duration of postoperative hospital stay, better esophageal cancer specific survival rate. And there is no increase in perioperative risk.

It has been not been updated for nearly 5 years since the Pharmacoepidemiology Professional Committee of the Chinese Pharmaceutical Association released the Guide on Methodological Standards in Pharmacoepidemiology in China(1st edition)in 2019,and an update is urgently needed.This study adopts a systematic review approach to comprehensively search for global pharmacoepidemiology methodological guidelines and analyze their development status.By extracting the frameworks and key elements of the guidelines,the China's guide was compared with other included guidelines,its shortcomings were analysed,and pragmatic and feasible suggestions for improvement in line with China's national conditions,were proposed in order to provide references for updating China's guide.A systematic search was conducted by searching PubMed,Embase,CNKI,WanFang Data and 17 official websites of international academic organizations for pharmacoepidemiology and regulatory agencies from countries or regions including Europe,the United States,Japan,and China,etc.,and relevant guidelines or standards were screened based on predefined inclusion and exclusion criteria,resulting in the inclusion of 33 methodological guidelines or standards for pharmacoepidemiological studies.A qualitative synthesis approach was then employed to extract core elements from the guidelines through thematic categorization and content summarization,followed by a descriptive comparative analysis.The results indicate that the 1st edition of the China's guide provides relatively comprehensive guidance on adverse drug reaction reporting and publication of research findings.However,there are gaps in study protocol development,data analysis during study implementation,study reporting,and specific study scenarios.By integrating and drawing upon the latest international pharmacoepidemiology methodology guidelines while balancing comprehensiveness,practicality,and user-friendliness,this study provides recommendations for updating the China's guide.

Pharmacoepidemiology is an interdisciplinary discipline that applies epidemiological research methods to evaluate the application and effect of drugs within population.Standardizing pharmacoepidemiological research methods is crucial for ensuring the quality of research and promoting the development of the discipline.The Pharmacoepidemiology Professional Committee of Chinese Pharmaceutical Association developed the Guide on Methodological Standards in Pharmacoepidemiology(1st edition),in 2019,but has not been updated in over five years.Other,countries/regions such as Europe,America,Japan and South Korea have made a lot of progress in developing and updating the guidelines.Therefore,the rapid development of pharmacoepidemiology in our country and the growing need to align with international standards make it essential to update the guidelines.The second edition of the guidelines was developed through a process that included systematic reviews,practical surveys,and multidisciplinary collaboration.Compared with the first edition,the updated version has made many important changes in research design,data sources,specific application scenarios and more,and added new contents such as the application of artificial intelligence.The purpose of this paper is to emphasize the necessity of updating the guidelines,selecting important changes and formulating interpretation plans.It aims to provide references for relevant professionals to comprehensively understand and apply the new guidelines,and to promote the standardized development and quality of pharmacoepidemiologic research in our country,further advancing the field.