In the context of global warming, protecting outdoor workers from occupational heat exposure has become an important public health concern. This review summarized the principle, applicability, and limitation of three categories of wet bulb globe temperature (WBGT) prediction models: empirical regression models, heat-balance models, and machine-learning models. Drawing on international experience from the United States, Europe, and Japan, this review further examined the technical challenges of applying WBGT-based prediction models to large-scale occupational heat stress early warning systems. In response to gaps in occupational heat stress management in China, WBGT should be considered a core assessment indicator to support a transition from passive response to proactive intervention. A localized implementation pathway is proposed, incorporating mechanism-based model calibration, regional parameter adaptation, and multi-source data fusion. Strengthening collaboration between public health and meteorological departments and developing platform-based flexible intervention strategies for workers in new forms of employment may improve the targeting of occupational heat stress early warning and health protection. Future research should focus on physics-constrained machine learning, refined microenvironmental prediction, and individualized risk assessment to support the development of a digitally enabled occupational heat-health protection framework.

Cholangiocarcinoma has an extremely poor prognosis, and the efficacy of existing treatment methods is limited. In the highly desmoplastic tumor microenvironment of cholangiocarcinoma, cancer-associated fibroblasts (CAFs) are the core regulators. Their significant heterogeneity and complex intercellular crosstalk network are not only key factors driving cholangiocarcinoma progression and drug resistance, but also highly promising therapeutic targets. This review focuses on the characteristics of CAFs in cholangiocarcinoma and the key crosstalk mechanisms between CAFs and tumor cells as well as immune cells, and summarizes the research progress and limitations of current therapeutic strategies targeting CAFs.

Objective To investigate the safety and feasibility of the domestic SA-1000 single-port single-arm robot-assisted laparoscopic system in total hysterectomy.Methods Data from 16 patients who underwent total hysterectomy using the SA-1000 system at the Department of Obstetrics and Gynecology,The Second Affiliated Hospital of Naval Medical University,between Mar.2023 and Jan.2024 were retrospectively collected.Surgical parameters were analyzed.Postoperative pain was assessed using the visual analogue scale(VAS)at 24 h after surgery and before discharge.Incision cosmesis was evaluated 3-5 weeks postoperatively using the body image questionnaire(BIQ,score range 3-24).Results All 16 procedures were successfully completed using the SA-1000 system without conversion to open surgery,achieving a 100.0%procedural success rate.The mean whole surgery time was(234.40±56.24)min.The median robotic arm setup time was 8.0(4.0,13.5)min,and the median console operating time was 128.0(100.0,151.0)min.The median intraoperative blood loss was 100.0(100.0,200.0)mL.No perioperative complications,such as hemorrhage,infection,injury to adjacent organs(ureters,bladder,bowel),poor wound healing,or incisional hernia,were observed.The mean wound pain score at 24 h postoperatively was 3.81±1.64,decreasing to a median of 3.0(2.0,4.0)before discharge.The BIQ score assessed at 3-5 weeks postoperatively was 21.88±1.15.Conclusion The application of the domestic SA-1000 single-port single-arm robot-assisted laparoscopic system for total hysterectomy is safe and feasible,demonstrating favorable surgical outcomes.It holds promise for broader implementation and promotion in domestic medical centers.

Cholangiocarcinoma has an extremely poor prognosis, and the efficacy of existing treatment methods is limited. In the highly desmoplastic tumor microenvironment of cholangiocarcinoma, cancer-associated fibroblasts (CAFs) are the core regulators. Their significant heterogeneity and complex intercellular crosstalk network are not only key factors driving cholangiocarcinoma progression and drug resistance, but also highly promising therapeutic targets. This review focuses on the characteristics of CAFs in cholangiocarcinoma and the key crosstalk mechanisms between CAFs and tumor cells as well as immune cells, and summarizes the research progress and limitations of current therapeutic strategies targeting CAFs.

Cholangiocarcinoma is a malignant tumor with biliary epithelial features.The early diagnosis of cholangiocarcinoma is currently difficult and the treatment outcomes are poor.Its microenvironment includes abundant fibrotic mesenchyme and a variety of cell types,which promote the development and metastasis of cholangiocarcinoma by interacting with tumor cells through mechanisms such as facilitating migration,suppressing the immune response,and inducing angiogenesis and lymphangiogenesis.Immunotherapy is an important tumor treatment approach,and immunotherapy for cholangiocarcinoma has made some progress.This article reviews the characteristics of the immune microenvironment of cholangiocarcinoma,its relationship with immunotherapy,and cutting-edge therapeutic strategies.

Cholangiocarcinoma originates from bile duct epithelial cells and is a highly heterogeneous and aggressive malignant tumour. A deep understanding of the biological characteristics of the tumor can help to make progress in the treatment of cholangiocarcinoma. There are many types of animal models of cholangiocarcinoma, and different models can be induced according to different research purposes, including chemotoxic agent models, cholestatic models, implantation models, genetically engineered models, etc. This paper summarises the existing animal models of cholangiocarcinoma, compares their advantages and disadvantages as well as the application scenarios, and provides a reference for subsequent studies.

Objective:To compare the laparoscopic and open surgery in the treatment of Mirizzi syndrome (MS).Methods:The clinical data of 125 patients with MS undergoing surgery in Tianjin Nankai Hospital from May 2013 to April 2020 were retrospectively analyzed, including 59 males and 66 females, aged (57.7±13.6) years old. Patients were divided into the laparoscopic group ( n=84) and open group ( n=41). General data, operation time, intraoperative blood loss, postoperative complications, postoperative and total hospital were compared between the groups. Patients were followed up and screened for biliary stone recurrence or biliary stenosis by phone or Wechat. Results:The postoperative hospital stay [8.00(5.25, 12.00) d vs. 13.00(10.00, 17.50) d, P<0.001] and total hospital stay [15.00 (10.25, 22.75) d vs. 22.00 (16.00, 27.50) d, P<0.001] were shorter in laparoscopic group. The conversion rate of laparoscopic group was 15.5% (13/84). No perioperative death occurred in either group. The incidence of postoperative complications were comparable between the groups [9.5%(8/84) vs. 7.3%(3/41), P>0.05]. In laparoscopic group, 64 patients were followed up [76.2% (64/84)]. During follow-up, there were two deaths, five cases of bile duct stones recurrence and one case of bile duct stenosis. In open group, 37 patients were followed up [90.2% (37/41)]. During follow-up, there were four deaths, four cases of bile duct stones recurrence. All deaths during follow-ups were non-MS-related. Conclusion:Compared to open surgery, laparoscopic surgery could shorten the total/postoperative hospital stay while does not increase the morbidity and mortality, which could be safe and feasible in the treatment of MS.

In the process of radical resection of abdominal malignant tumors, large blood vessels are often invaded, which not only increases the difficulty of operation, but also directly affects the curative effect and prognosis. As the concept of expanded radical surgery combined with vascular resection and reconstruction and related techniques have been gradually recognized, surgeons have begun to use autologous, allogeneic or artificial vessels to repair the defective blood vessels during surgery, so as to achieve the effect of radical surgery. However, due to the short comings of these materials, scholars have been looking for better alternatives. In view of the fact that the mesothelial cells of the peritoneum and the endothelial cells of the blood vessels have many similarities in embryology, histology and physiology, and peritoneum is also easier to obtain than autologous, allogeneic or artificial vessels. To make the autologous peritoneum into a patch for repairing the defective blood vessels is feasible in theoretical and technical. In this paper, we review the current research progress of autologous peritoneal patch to repair blood vessels of defect.

Objective:To analyze the expression levels of microRNA-203(miR-203)and fibroblast growth factor-2(FGF-2)in hemangiomas of infancy(HOI)and to explore their clinical significance.Methods:A total of 55 patients with HOI admitted to our hospital from March 2016 to August 2017 were selected as HOI group and divided into proliferative phase(31 cases)and regressive phase(24 cases), normal tissue specimens were taken as control group(34 cases). Real time fluorescence quantitative PCR(qRT-PCR)was used to detect the expression levels of miR-203 and FGF-2 mRNA in HOI tissues.Immunohistochemistry was used to detect the expression of FGF-2 protein in HOI tissues.Clinical indicators of HOI patients included angiogenin(ANG), vascular endothelial growth factor(VEGF), basic fibroblast growth factor(bFGF), glucocorticoid receptor alpha(GRα), glucocorticoid receptor beta(GRβ). Pearson method was used to compare and analyze the correlation between various indicators in children with HOI group.Logistic multivariate regression analysis was used to analyze the related influencing factors of HOI.Results:Compared with the control group(1.01±0.15), the expression level of miR-203 in HOI group(0.73±0.24)decreased significantly( P<0.05), and the proliferative phase(0.72±0.21)was significantly higher than the regression phase(0.59±0.19)( P<0.05); the expression levels of FGF-2 mRNA and protein in HOI group(2.38±0.74)were significantly higher than those in control group(1.02±0.14)( P<0.05), and the regression phase(2.37±0.79)was significantly higher than the proliferative stage(2.03±0.68)( P<0.05); Pearson analysis showed that miR-203 was negatively correlated with FGF-2, ANG, VEGF and bFGF( P<0.05), while FGF-2 was positively correlated with them( P<0.05); Logistic analysis showed that the expression levels of miR-203 and FGF-2 were both influencing factors of HOI. Conclusion:MiR-203 is low expressed in HOI, while FGF-2 is highly expressed.There is a significant difference in the expression changes of the two in HOI stages and it is important for clinical diagnosis of HOI and treatment.

Liver transplantation is currently the only treatment option for end-stage liver disease,but it is limited by the lack of high quality donor livers.The ongoing liver donor shortage could be alleviated by the consequent expansion of do-nor criteria to include the use of livers that would once have been discarded as unsuitable,marginal livers.Static cold storage,the current gold standard of organ preservation,is incapable of reversing the ischemic damage these organs have sustained.In hepatic transplantation,the limitations of cold storage are reflected in the significantly higher rates of early al]ograft dysfunction,primary non-function,and local ischemic cholangiopathy,especially seen with older,steatotic and donation after cardiac death (DCD) grafts.The existing cold storage technology has restricted the use of this kind of organs and machine perfusion preservation technology becomes an alternative choice.In this paper,we review the research progress on machine perfusion preservation of livers,and introduce the normothermic machine perfusion.