The application of artificial intelligence(AI)in medical diagnosis and treatment is becoming increasingly widespread,providing doctors and patients with more high-quality,efficient and personalized medical services.However,it also raised a series of ethical issues such as data security,algorithm transparency,responsibility definition,fairness and justice,doctor-patient relationships,and other aspects.Based on the combing of existing research results,this paper analyzed the research status of medical ethics in the application of AI in diagnosis and treatment,as well as expected that future medical ethics research can further explore the ethical issues of AI technology in medical treatment in greater depth,thus ensuring the rational application of AI in the medical field and maximizing the protection of patients'rights and interests.

Objective:To study the effects and the related molecular mechanisms of miR-148a-3p on the proliferation,invasion and migration of salivary adenoid cystic carcinoma SACC-LM cells.Methods:miR-148a-3p mimics and inhibitors,siRNA targeting EG-FR and their corresponding controls were transfected into SACC-LM cells.Bioinformatics was used to predict the potential target genes of miR-148a-3p.EGFR and miR-148a-3p mRNA expression levels were examined by qRT-PCR and the protein levels of EG-FR were detected by Western blotting.CCK-8,scratch,and Transwell assays were used to study the proliferation,migration,and invasion of SACC-LM cells,respectively.The direct targeting relationship between miR-148a-3p and EGFR was examined by using the double luciferase reporter gene assay.Statistical analysis of the data was performed by SPSS 22.0 software.Results:Overexpres-sion or inhibition of miR-148a-3p significantly inhibited or promoted the proliferation,invasion and metastasis of SACC-LM cells re-spectively(P＜0.05).Bioinformatics and double luciferase assay showed that miR-148a-3p directly targeted and regulated the expres-sion of EGFR(P＜0.001).Downregulation of EGFR inhibited the proliferation,migration and invasion of SACC-LM cells(P＜0.05)and partially reversed the promoting effect of miR-148a-3p inhibition(P＜0.05).Conclusion:The downregulation of miR-148a-3p leads to the abnormally high expression of its target gene EGFR,and promotes the proliferation,invasion,and migration of salivary adenoid cystic carcinoma cells.

Objective:To investigate the effects of methyltransferases like 3(METTL3)mediated m6A modification of double homology cassette A pseudogene8(DUXAP8)on the proliferation,migration and invasion of salivary adenoid cystic carcinoma SACC-LM cells and its potential molecular mechanisms.Methods:Whole-transcriptome sequencing showed that DUXAP8 was highly ex-pressed in SACC than in para-cancerous tissues(P＜0.05).The m6A modification sites on DUXAP8 were predicted using the SRAMP website,and the mRNA and protein expression of m6A-modified genes and the genes associated with the epithelial-mesen-chymal transition(EMT)was measured by qRT-PCR and Western blot,respectively.METTL3 and DUXAP8 was knocked down or overexpressed in SACC-LM cells,and the proliferation,migration,and invasion of the cells were assessed by CCK-8,scratch and Transwell assays.The correlation between METTL3 and DUXAP8 was evaluated using MeRIP-qPCR.Results:The expression of DUXAP8 in SACC tumor was higher than that in para-cancerous tissues(P＜0.05).Knockdown of DUXAP8 reduced proliferation,migration and invasion of SACC-LM cells,as well as the expression of EMT-related genes(P＜0.05).Multiple m6A modification sites of high confidence were found on DUXAP8.METTL3 was highly expressed in tumor tissues,more than other related genes(P＜0.05)and enzyme-encoding genes in SACC-LM cells(P＜0.05).METTL3 was found to function as a methyltransferase to regulate the expression of DUX-AP8,and downregulation of METTL3 inhibited prolifera-tion,migration and invasion of SACC-LM cells and partially reversed the promotion of these activities induced by DUX-AP8 overexpression(P＜0.05).Conclusion:METTL3-me-diated m6A modification upregulated DUXAP8 expression,which promotes the proliferation,migration and invasion of SACC cells.

The safety and efficacy of laparoscopic surgery for colorectal cancer has been confirmed by several large-scale clinical studies.Laparoscopy has become the main modality of surgical treatment for colorectal cancer in China.Based on evidence-based medicine and the experience accumulated in clinical practice,laparoscopic colorectal surgical techniques are still being continuously optimised and improved.The key techniques mainly revolve around the following three aspects:①complete surgical excision extension;②appropriate lymph node dissection area;③safe digestive tract reconstruction.Prioritizing the standardization of laparoscopic colorectal cancer surgery,promoting the consistent implementation of these procedures,establishing a scientific evaluation system,thoroughly assessing surgical outcomes,and conducting high-quality clinical research are essential for enhancing the standardization of laparoscopic colorectal cancer surgery in China.

High-quality clinical research is an important method to improve clinical diagnosis and treatment, promote discipline construction, and expand the frontier of medicine. In recent years, multi-center clinical studies in colorectal surgery in China have increased, and the level of clinical research has gradually improved, accumulating a wealth of clinical research experience. Innovative research topics and scientific design are the foundations of high-quality clinical research. Standardization of surgical techniques and quality control at all steps of the study are key to high-quality research. At the same time, researchers should establish a data management system, select appropriate data collection systems, and conduct regular data checks and feedback to ensure the quality of research data. Fully utilizing the advantages of case resources and further enhancing clinical research capabilities will provide assistance in promoting high-quality clinical research in the field of colorectal surgery in China. The authors summarize the experience of high-quality clinical research in colorectal surgery at home and abroad, in order to further promote the development of high-quality clinical research in China.

Objective: To explore the relationship between physical fitness and energy balance related behaviors (EBRBs), and their influencing factors among primary school students, so as to provide a scientific basis for the improvement of physical fitness in primary school students. Methods: By using a random sampling method, a total of 1 451 pupils aged 10-12 were selected from 8 regions of Shannxi Province (Fengxiang, Weibin, Danfeng, Shangzhou, Huazhou, Linwei, Gaoling, Weiyang). According to the total score of physical fitness test, pupils were divided into the excellent good physical fitness group and the pass failed group. The students EBRBs and their influencing factors were investigated cross sectionally, and the Mann-Whitney U test and stepwise linear regression analysis were used to explore the relationship between physical fitness and EBRBs. Results: Breakfasts behavior( r = 0.061 ) and physical activity behavior( r =0.105) among primary school students were positively correlated with total physical scores, with the excellent good physical fitness group (757.56, 768.57)were higher than that of the pass failed group(710.93, 705.67) ( Z= -2.41, -2.69, P <0.05). The screen behavior ( r =-0.065) was negatively correlated with the total physical fitness scores, with the excellent good physical fitness group (681.96) was significantly lower than the pass failed group(747.04) ( Z=2.78, P < 0.05 ). There was no statistically significant correlation between the frequency of beverage behavior and the total score of physical fitness ( P >0.05). The excellent good physical fitness group scored(762.22, 761.19, 758.82, 756.00, 761.20, 755.57, 761.52, 759.48, 781.78) higher than the pass failed group(708.70, 709.19, 710.32, 711.67, 709.19, 711.88, 709.04, 710.01, 699.36) including health beliefs, parental norms and parental role models for breakfast behaviors, and preferences, self efficacy, and self regulation for physical activities, as well as self efficacy, parental role models, family rules for screen behavior ( Z=-2.40, -2.78, -2.35, -2.48, -2.52, -2.27, -2.35, -2.22, -3.65, P <0.05). Conclusion The physical fitness of primary school students is affected by EBRBs. Parents should model positive behaviors in the family, promote the health behavior of primary school students, improve the physical health of primary school students health.

Objective:To explore the innovation mode of independent transformation-oriented science and technology research program approval by medical new research & development (R&D) institution.Methods:Through analyzing the program layout, funds, review experts, undertaking units, chief experts and interdisciplinarity to summarize the experiences of the independent transformation-oriented municipal program approval by Haihe laboratory of Cell Ecosystem in 2022.Results:As a new medical R&D institution, which vigorously constructed by Tianjin, Haihe laboratory of Cell Ecosystem has carried out the practice of the independent transformation-oriented municipal program through the measures of layout of full-chain transformation, conducting transformation-oriented review, gathering high-level research talents, and emphasizing interdisciplinarity.Conclusions:The experiences of Haihe laboratory of Cell Ecosystem make significance for medical new R&D institutions to explore and cultivate scientific research program with transformation potential and to promote the transformation of scientific and technological achievements, which are powerful factors for new R&D institutions to play a role of pilot and provide important support to scientific and technological innovation and transformation.

Objective:To investigate the application value of modified Overlap esophago-gastric tube (MO-EG) reconstruction in totally laparoscopic radical proximal gastrectomy.Methods:The retrospective and descriptive study was conducted. The clinicopathological data of 7 patients with upper gastric cancer or adenocarcinoma of esophagogastric junction (AEG) who underwent totally laparoscopic radical proximal gastrectomy with MO-EG reconstruction in the Second Hospital of Jilin University from January 2019 to December 2020 were collected. There were 4 males and 3 females, aged 62(range, 55-72)years. The body mass index of the 7 patients was 21.5(range, 18.5-26.0)kg/m 2. Of the 7 patients, 2 cases had early upper third gastric cancer and 5 cases had Siewert Ⅱ AEG. All patients underwent totally laparoscopic radical proximal gastrectomy with MO-EG recons-truction using barbed sutures. Observation indicators: (1) surgical situations; (2) postoperative recovery situations; (3) postoperative histopathological examinations; (4) follow-up. Follow-up was conducted using outpatient examination and telephone interview to detect postoperative esophageal reflux, endoscopic classification of esophageal reflux, anastomotic complications, tumor recurrence and metastasis and survival of patients up to December 2021. Measurement data with normal distribution were represented as Mean±SD and measurement data with skewed distribution were represented as M(range). Count data were described as absolute numbers. Results:(1) Surgical situations. All the 7 patients underwent totally laparoscopic radical proximal gastrectomy and D 1+ lymph node dissection with MO-EG reconstruction through abdominal transhiatal approach. None of the 7 patients underwent conversion to open surgery or additional thoracotomy. The operation time, time of digestive reconstruction, volume of intraoperative blood loss and length of esophagus dissected of 7 patients were (271±36)minutes, (44±10)minutes, (53±26)mL and (6.4±0.3)cm, respec-tively. (2) Postoperative recovery situations. The time to postoperative initial out-of-bed activities, time to postoperative first flatus, time to postoperative initial liquid food intake and duration of hospital stay of 7 patients were (21±5)hours, (2.9±0.9)days, (5.0±0.7)days and (10.1±1.9)days, respectively. None of the 7 patients had postoperative severe complications such as bleeding, anasto-motic leakage or mortality. One patient had postoperative pulmonary infection and recovered after anti-infection treatment. Two patients had pleural effusion and were improved after conserva-tive treatment. (3) Postoperative histopathological examinations. The tumor diameter of 7 patients was (2.5±0.7)cm. Histopathological examination of upper margins of 7 patients was negative. The distance between the esophagus margin and the superior margin of the tumor of patients with AEG was (1.8±0.6)cm. The number of lymph node dissected and the number of inferior mediastinum lymph node dissected of 7 patients were 26.0±3.6 and 3.7±1.1, respectively. Pathological TNM stages of 7 patients were 2 cases of stage ⅠB, 4 cases of ⅡA, 1 case of ⅡB. (4) Follow-up. All the 7 patients were followed up for 18(range, 12?36)months. Of the 7 patients, 4 cases reported asymptomatic, 2 cases had symptoms of reflux and 1 case had chocked feeling after eating. All the 7 patients underwent barium meal examination of gastrointestinal tract without anastomotic dysfunction or anastomotic stenosis. Six of the 7 patients underwent gastroscopy at postoperative 1 year and only 1 of them reported grade B reflux esophagitis according to Los Angeles classification, while the rest of 5 patients had no evidence of obvious reflux. None of the 7 patients had postoperative gastric cancer tumor recurrence, metastasis or death. Conclusion:Application of MO-EG reconstruction in totally laparoscopic radical proximal gastrectomy is safe and feasible, with satisfactory short-term effects.

The idea, development, exploration, assessment, and long-term follow-up (IDEAL) framework and recommendations provide a guiding path for high-quality research and practice for surgical technology innovation. Transanal total mesorectal excision, as a new technology in the field of colorectal surgery, has evolved step by step following the IDEAL framework. At the technical design and development stage, the technique feasibility is verified. At the exploratory stage, small-scale clinical practice is conducted, standardized diagnosis and treatment and surgical technique are developed, and structured training is carried out. During the assessment stage, large-scale rando-mized controlled studies are conducted to confirm the safety and efficacy. Subsequently, long-term monitoring and follow-up of the technique is carried out in clinical practice. All the processes become good example in the field of surgical clinical research. The authors summarize the pioneering works of the research team in quality control, in order to provide references for peers.

The number of colorectal cancer patients in China ranks the top in the world, but there are few international guidelines for the diagnosis and treatment of colorectal cancer formulated by Chinese, nor high-level evidence-based medicine research of colorectal cancer from China. Transanal total mesorectal excision (taTME) is a new technology in the field of colorectal surgery in recent years. At present, clinical practice related to taTME has been carried out simul-taneously with clinical researches in the world. Based on the experience of participating in the top clinical trials in the field of international colorectal surgery, like the COLOR series prospective research, the authors introduce the organization and implementation of COLOR Ⅲ research in China. It is hoped that the COLOR series trials will become an example in the field of high-quality surgical clinical research, so as to improve the clinical research level of colorectal surgery in China.