OBJECTIVES: Oxaliplatin (OXA) and 5-fluorouracil (5-FU) are 2 commonly used chemotherapeutic agents for colorectal cancer (CRC). MicroRNAs (miRNAs, miRs) play crucial roles in the development of chemoresistance in various cancers. However, the role and mechanism of miR-224-5p in regulating CRC chemoresistance remain unclear. This study aims to investigate the function of miR-224-5p in chemoresistant CRC cells and the underlying mechanisms. METHODS: CRC datasets GSE28702 and GSE69657 were downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed miRNAs between drug-sensitive and resistant groups (OXA or 5-FU) were analyzed, and miR-224-5p was identified as the target miRNA. Chemoresistant cell lines HCT15-OXR, HCT15-5-FU, SW480-OXR, and SW480-5-FU were established. Transient transfections were performed using miR-224-5p mimics, inhibitors, and their respective negative controls (control mimic, control inhibitor) in these cell lines. Cells were treated with different concentrations of OXA or 5-FU post-transfection, and the half-maximal inhibitory concentration (IC₅₀) was determined using the cell counting kit-8 (CCK-8) assay. Cell proliferation was assessed by CCK-8 and colony formation assays. The expression levels of miR-224-5p, LC3, and P62 were measured by real-time polymerase chain reaction (real-time PCR) and/or Western blotting. Autophagic flux was assessed using a tandem fluorescent-tagged LC3 reporter assay. TargetScan 8.0, miRTarBase, miRPathDB, and HADb were used to predict B-cell lymphoma-2 (Bcl-2) as a potential miR-244-5p target, which was further validated by dual-luciferase reporter assays. RESULTS: Chemoresistant CRC cells exhibited down-regulated miR-224-5p expression, whereas up-regulation of miR-224-5p enhanced chemotherapy sensitivity. Exposure to OXA or 5-FU significantly increased autophagic activity in chemoresistant CRC cells, which was reversed by miR-224-5p overexpression. Dual-luciferase assays verified Bcl-2 as a direct target of miR-224-5p. CONCLUSIONS MiR-224-5p regulates chemoresistance in CRC by modulating autophagy through direct targeting of Bcl-2.
Humans ; MicroRNAs/physiology* ; Colorectal Neoplasms/drug therapy* ; Drug Resistance, Neoplasm/genetics* ; Autophagy/drug effects* ; Fluorouracil/pharmacology* ; Oxaliplatin ; Cell Line, Tumor ; Proto-Oncogene Proteins c-bcl-2/metabolism* ; Gene Expression Regulation, Neoplastic

Bariatric and metabolic surgery has become a primary treatment for decompensated obesity, with the number of procedures rapidly increasing in China in recent years. Various improved and novel surgical techniques have emerged. Given the characteristics of the Chinese obese population lower body mass index compared to Western populations and frequent pancreatic islet dysfunction laparoscopic Roux-en-Y gastric bypass remains one of the mainstream procedures in China. Although the Procedural Guideline for Laparoscopic Roux-en-Y Gastric Bypass (2019 Edition) has provided standardized surgical steps, mastering and routinely implementing the procedure in clinical practice continues to pose significant challenges. Compared to laparoscopic sleeve gastrectomy, laparoscopic Roux-en-Y gastric bypass is more technically demanding and requires a longer learning curve. To avoid suboptimal weight loss or severe postoperative complications resulting from non-standardized techniques, this article summarizes the authors' clinical experience, emphasizing key technical steps: creation of the gastric pouch, standardization of gastrojejunal and jejunojejunal anastomoses, hiatal closure, and full serosalization. These insights aim to improve procedural safety and therapeutic efficacy by offering a set of practical process optimization strategies.
Humans ; Gastric Bypass/methods* ; Laparoscopy/methods* ; Obesity, Morbid/surgery* ; Postoperative Complications/prevention & control* ; China ; Jejunum/surgery* ; Gastrectomy/methods* ; Anastomosis, Surgical/methods* ; Weight Loss

The persistence of obesity is rooted in energy storage mechanisms formed through millions of years of evolution, combined with the systematic influence of the modern "obesogenic environment", constituting a complex regulatory network involving coordinated neural, endocrine, and metabolic systems. Current mainstream treatment methods exhibit significant limitations: glucagon-like peptide-1 receptor agonists demonstrate remarkable short-term weight loss effects but present issues with tolerance development and post-discontinuation weight regain; bariatric metabolic surgery similarly faces long-term weight recurrence challenges, with approximately one-third of patients experiencing weight regain within five years after surgery. Therefore, comprehen-sive obesity treatment must establish a new paradigmatic framework: utilizing cognitive behavioral intervention as the therapeutic foundation, employing multi-dimensional strategies including mindful eating training, nutritional management, and exercise intervention to help patients establish sustain-able lifestyle changes; repositioning pharmaceutical and surgical medical interventions as supportive measures for behavioral change; constructing multi-level social support environments encompassing policy, community, and family domains to achieve transformation from treatment goals focused solely on weight reduction to metabolic health improvement, from success definition based on short-term weight loss to long-term maintenance, and from medical-dominated treatment systems to patient-centered multidisciplinary collaborative approaches. Ultimately, through the deep integration of biomedical precision, patient cognitive initiative, and social support inclusiveness, a sustainable collaborative pathway for obesity treatment can be established. Based on twenty years of clinical experience in bariatric and metabolic surgery, the authors provide an in-depth analysis of the treat-ment challenges faced by obesity as a complex disease and proposes the necessity of transitioning from traditional single medical interventions to a biopsychosocial comprehensive treatment model.

Obesity has become a global public health crisis,attracting significant attention due to its association with metabolic syndrome,cardiovascular diseases,type 2 diabetes,and various cancers.Bariatric-metabolic surgery,as a long-term effective method for weight management,can significantly reduce visceral and subcutaneous fat,improving metabolic health.However,it is also crucial to recognize the postoperative decline in muscle mass and bone density,which can lead to a series of related issues,adversely affecting patients' physical health and quality of life.Given this complex clinical reality,research on postoperative body composition changes becomes particularly important.Here,the authors systematically summarize the characteristics of body composition changes at different stages after bariatric-metabolic surgery,delves into the clinical significance of body composition loss,and provides a forward-looking perspective on the future development of this field,aiming to develop more scientific and reasonable postoperative management strategies for clinical practice.

The persistence of obesity is rooted in energy storage mechanisms formed through millions of years of evolution, combined with the systematic influence of the modern "obesogenic environment", constituting a complex regulatory network involving coordinated neural, endocrine, and metabolic systems. Current mainstream treatment methods exhibit significant limitations: glucagon-like peptide-1 receptor agonists demonstrate remarkable short-term weight loss effects but present issues with tolerance development and post-discontinuation weight regain; bariatric metabolic surgery similarly faces long-term weight recurrence challenges, with approximately one-third of patients experiencing weight regain within five years after surgery. Therefore, comprehen-sive obesity treatment must establish a new paradigmatic framework: utilizing cognitive behavioral intervention as the therapeutic foundation, employing multi-dimensional strategies including mindful eating training, nutritional management, and exercise intervention to help patients establish sustain-able lifestyle changes; repositioning pharmaceutical and surgical medical interventions as supportive measures for behavioral change; constructing multi-level social support environments encompassing policy, community, and family domains to achieve transformation from treatment goals focused solely on weight reduction to metabolic health improvement, from success definition based on short-term weight loss to long-term maintenance, and from medical-dominated treatment systems to patient-centered multidisciplinary collaborative approaches. Ultimately, through the deep integration of biomedical precision, patient cognitive initiative, and social support inclusiveness, a sustainable collaborative pathway for obesity treatment can be established. Based on twenty years of clinical experience in bariatric and metabolic surgery, the authors provide an in-depth analysis of the treat-ment challenges faced by obesity as a complex disease and proposes the necessity of transitioning from traditional single medical interventions to a biopsychosocial comprehensive treatment model.

Obesity has become a global public health crisis,attracting significant attention due to its association with metabolic syndrome,cardiovascular diseases,type 2 diabetes,and various cancers.Bariatric-metabolic surgery,as a long-term effective method for weight management,can significantly reduce visceral and subcutaneous fat,improving metabolic health.However,it is also crucial to recognize the postoperative decline in muscle mass and bone density,which can lead to a series of related issues,adversely affecting patients' physical health and quality of life.Given this complex clinical reality,research on postoperative body composition changes becomes particularly important.Here,the authors systematically summarize the characteristics of body composition changes at different stages after bariatric-metabolic surgery,delves into the clinical significance of body composition loss,and provides a forward-looking perspective on the future development of this field,aiming to develop more scientific and reasonable postoperative management strategies for clinical practice.

Obesity is a global public health problem, and bariatric metabolic surgery is the most effective measure to treat obesity and related complications. With the development of bariatric and metabolic surgery, hospitals at different levels across the country have successively carried out bariatric metabolic surgery, in which laparoscopic sleeve gastrectomy is the most popular. Problems such as postoperative complications and weight regain are increasing due to irregular surgical opera-tions. Combining with their own experience and the characteristics of medical center, the authors summarize the operation details of laparoscopic sleeve gastrectomy in order to further standardize the operation of laparoscopic sleeve gastrectomy and reduce the incidence of postoperative complications.

OBJECTIVES: Surgical robot system has broken the limitation of traditional surgery and shown excellent performance in surgery, and has been widely used in minimally invasive treatment in most areas of surgery. This study aims to verify the basic performance of the domestic surgical robot system and the safety and effectiveness of the integrated bipolar electrocoagulation and ultrasonic knife. METHODS: The basic performance of the domestic surgical robot system was evaluated by completing the square knot and surgical knot, vertical and horizontal perforation and right ring perforation and suture, as well as picking up beans. Compared with laparoscopy, the safety and effectiveness of the domestic surgical robot after integrated interconnection bipolar electrocoagulation and ultrasonic scalpel were evaluated by detecting the vascular closure performance and the degree of histopathological damage in animals. RESULTS: Compared with freehand knotting, domestic robot knotting speed and circumference were slightly worse, but better than laparoscopic knotting. There was no statistical significance in the tension difference of the surgical knots among the 3 methods (P>0.05), but the tension of the square knots made by the freehand and the domestic surgical robot was greater than that of the laparoscopy (P<0.05). The space required for both the left and right forceps heads of knots was smaller than that of laparoscopy (P<0.001), which successfully completed the 4 quadrant suture tasks, and the time of picking up beans was significantly less than that of laparoscopy (P<0.05). There was no significant difference in the temperature of the liver tissue after the bipolar electrocoagulation between the interconnected domestic surgical robot and the laparoscopy (P>0.05), and the acute thermal injury was observed under the light microscope. The temperature of the liver tissue treated by the domestic robotic ultrasound knife was higher than that of the laparoscopic ultrasound knife (P<0.05). CONCLUSIONS Domestic surgical robots are obviously superior to laparoscopy in suturing, knotting, and moving objects, and domestic surgical robots' interconnect bipolar electrocoagulation and ultrasonic knife have achieved success in animal experiments, and hemostasis is considered to be safe and effective.
Animals ; Robotics ; Laparoscopy/methods* ; Ultrasonography

The use of bariatric and metabolic surgery as a central treatment for obesity has been steadily increasing. BMI, as a widely used metric for assessing obesity, has considerable relevance in the field of metabolic research. However, its limitations, such as its inability to account for variations in fat distribution, remain a subject of considerable controversy. In recent years, there has been a surge of interest in the relationship between changes in body composition and the risk of metabolic disease. Consequently, the study of the effects of bariatric and metabolic surgery on changes in body composition has become a major focus of bariatric and metabolic surgery research. As a potential replacement for BMI, body composition measurements are expected to improve and standardize the assessment of the effectiveness of bariatric and metabolic surgery. This underscores the urgent need for the development of methods and standards for body composition measurement. This paper undertakes a comprehensive review of the existing evidence on the application of body composition measurement techniques for the efficacy evaluation of bariatric and metabolic surgery. The intent is to provide new insights and pave the way for the exploration of future research directions in this area.

The use of bariatric and metabolic surgery as a central treatment for obesity has been steadily increasing. BMI, as a widely used metric for assessing obesity, has considerable relevance in the field of metabolic research. However, its limitations, such as its inability to account for variations in fat distribution, remain a subject of considerable controversy. In recent years, there has been a surge of interest in the relationship between changes in body composition and the risk of metabolic disease. Consequently, the study of the effects of bariatric and metabolic surgery on changes in body composition has become a major focus of bariatric and metabolic surgery research. As a potential replacement for BMI, body composition measurements are expected to improve and standardize the assessment of the effectiveness of bariatric and metabolic surgery. This underscores the urgent need for the development of methods and standards for body composition measurement. This paper undertakes a comprehensive review of the existing evidence on the application of body composition measurement techniques for the efficacy evaluation of bariatric and metabolic surgery. The intent is to provide new insights and pave the way for the exploration of future research directions in this area.