Objective:To investigate the current situation and changing trends of coal-burning-borne endemic fluorosis (coal-burning-borne fluorosis) areas in Henan Province, and evaluate the effectiveness of prevention and control measures.Methods:From 2019 to 2021, monitoring was carried out in all villages affected by coal-burning-borne fluorosis in Henan Province. A simple random sampling method was used to select 30 households in each affected village each year to investigate the use of stoves and the formation of related healthy living behaviors. According to the criteria of "Diagnosis of Dental Fluorosis" (WS/T 208-2011), all children aged 8 to 12 in the affected villages were examined for dental fluorosis. The evaluation for control and elimination of the disease areas was carried out in accordance with the "Evaluation Approach for Control and Elimination of Priority Endemic Diseases (2019 Edition)".Results:From 2019 to 2021, a total of 7 472 households were monitored, the rate of qualified improved stoves were all ≥99.80%, the correct use rate of qualified improved stoves and correct drying of corn and pepper were reached 100%. From 2019 to 2021, the prevalence of dental fluorosis in children was 5.38% (237/4 405), 5.18% (232/4 477), and 3.68% (145/3 937), respectively, showing a declining trend (χ 2trend = 12.73, P < 0.001). The prevalence of dental fluorosis among children in affected villages was less than 15%. From 2019 to 2021, all affected villages in coal-burning-borne fluorosis in Henan Province had met the elimination criteria. Conclusion:Coal-burning-borne fluorosis areas in Henan Province have been continuously eliminated, with significant prevention and control effects, and the disease has been effectively controlled.

Objective:To investigate the current situation and changing trends of coal-burning-borne endemic fluorosis (coal-burning-borne fluorosis) areas in Henan Province, and evaluate the effectiveness of prevention and control measures.Methods:From 2019 to 2021, monitoring was carried out in all villages affected by coal-burning-borne fluorosis in Henan Province. A simple random sampling method was used to select 30 households in each affected village each year to investigate the use of stoves and the formation of related healthy living behaviors. According to the criteria of "Diagnosis of Dental Fluorosis" (WS/T 208-2011), all children aged 8 to 12 in the affected villages were examined for dental fluorosis. The evaluation for control and elimination of the disease areas was carried out in accordance with the "Evaluation Approach for Control and Elimination of Priority Endemic Diseases (2019 Edition)".Results:From 2019 to 2021, a total of 7 472 households were monitored, the rate of qualified improved stoves were all ≥99.80%, the correct use rate of qualified improved stoves and correct drying of corn and pepper were reached 100%. From 2019 to 2021, the prevalence of dental fluorosis in children was 5.38% (237/4 405), 5.18% (232/4 477), and 3.68% (145/3 937), respectively, showing a declining trend (χ 2trend = 12.73, P < 0.001). The prevalence of dental fluorosis among children in affected villages was less than 15%. From 2019 to 2021, all affected villages in coal-burning-borne fluorosis in Henan Province had met the elimination criteria. Conclusion:Coal-burning-borne fluorosis areas in Henan Province have been continuously eliminated, with significant prevention and control effects, and the disease has been effectively controlled.

Thyroid cancer is one of the most common tumors of the endocrine system, characterized by high morbidity and low mortality. Thyroid stimulating hormone (TSH) is an important factor in the development of thyroid cancer. TSH suppression therapy is widely used in clinical practice to reduce recurrence and metastasis through long-term strict monitoring and control of postoperative TSH level in patients with differentiated thyroid cancer (DTC). However, the specific mechanism of the effect played by TSH in the proliferation and progression of DTC has not been clarified. The current researches focus on classifying the relation between TSH and the onset risk, adverse clinicopathological factors and prognosis of DTC, and the applicable scope of TSH suppression therapy and targeted TSH receptor (TSHR) therapy. This article reviews the relation between TSH and DTC and the latest research progress of TSH suppression therapy and TSHR targeted therapy.

Total hip arthroplasty(THA)is an effective treatment for elderly femoral neck fractures,mid-to late-stage femoral head necrosis,and end-stage hip osteoarthritis.However,serious complications such as aseptic loosening of the prosthesis,peripheral fractures,and dislocation of the prosthesis still exist following THA,which makes the selection of the appropriate hip prosthesis type and placement position before THA an important challenge for surgeons.Currently,the commonly used preoperative planning methods for THA mainly rely on static images from two-dimensional(2D)X-ray or three-dimensional(3D)computed tomography(CT),which fail to adequately consider the hip joint in weight-bearing as well as motion,lumbar-hip joint changes,and prosthetic impingement during motion.Recently,the dual fluoroscopic imaging system,as a new in-vivo,dynamic radiological imaging technology,provides comprehensive and accurate dynamic 3D data for THA preoperative planning.However,the technical process and expert consensus on preoperative 3D planning of THA using a dual fluoroscopic imaging system have not yet been established,which affects the promotion and application of this technology.In light of the above,national orthopaedic experts and related professional representatives discussed and proposed seven consensus issues,and the'expert recommendation rate'and'strong recommendation rate'were obtained through a questionnaire survey on the recommendations of the participating experts.This consensus aims to provide guidance and reference for the standardised application of preoperative 3D planning of THA using the dual fluoroscopic imaging system.

Total hip arthroplasty(THA)is an effective treatment for elderly femoral neck fractures,mid-to late-stage femoral head necrosis,and end-stage hip osteoarthritis.However,serious complications such as aseptic loosening of the prosthesis,peripheral fractures,and dislocation of the prosthesis still exist following THA,which makes the selection of the appropriate hip prosthesis type and placement position before THA an important challenge for surgeons.Currently,the commonly used preoperative planning methods for THA mainly rely on static images from two-dimensional(2D)X-ray or three-dimensional(3D)computed tomography(CT),which fail to adequately consider the hip joint in weight-bearing as well as motion,lumbar-hip joint changes,and prosthetic impingement during motion.Recently,the dual fluoroscopic imaging system,as a new in-vivo,dynamic radiological imaging technology,provides comprehensive and accurate dynamic 3D data for THA preoperative planning.However,the technical process and expert consensus on preoperative 3D planning of THA using a dual fluoroscopic imaging system have not yet been established,which affects the promotion and application of this technology.In light of the above,national orthopaedic experts and related professional representatives discussed and proposed seven consensus issues,and the'expert recommendation rate'and'strong recommendation rate'were obtained through a questionnaire survey on the recommendations of the participating experts.This consensus aims to provide guidance and reference for the standardised application of preoperative 3D planning of THA using the dual fluoroscopic imaging system.

Objective:To learn about the progress of prevention and control of drinking-water-borne endemic arsenic poisoning in Henan Province, and provide scientific basis for achieving the goal of eliminating high arsenic hazards as scheduled.Methods:From July to August 2019, in accordance with the requirements of the National Monitoring Program for Drinking-water-borne Endemic Arsenic Poisoning, a general survey was carried out in 26 high-arsenic villages in 6 counties of Henan Province to investigate the water improvement situation and the operation of water improvement projects, and the arsenic content in drinking water of households was measured, meanwhile, the arsenic poisoning status of permanent residents in high-arsenic villages was investigated.Results:All 26 villages with high arsenic content in the province had undergone water improvement, with a water improvement rate of 100.00%. A total of 18 water improvement projects were investigated in 26 high-arsenic villages, all of which were operating normally. Twenty-six water samples were collected, and the arsenic content in the household water was < 0.01 mg/L, which met the sanitary standards for drinking water. No patient of endemic arsenic poisoning was found during the survey.Conclusion:In Henan Province, the drinking-water-borne endemic arsenic poisoning has been effectively controlled, and the prevention and control achievements should continue to be consolidated in the future.

Objective:To investigate the epidemic situation of drinking water-borne endemic fluorosis in Henan Province, evaluate the effectiveness of prevention and control measures, and provide a basis for formulating further prevention and control policies.Methods:From April to November 2021, a census of all diseased villages registered in 112 drinking water-borne endemic fluorosis counties (cities, districts, hereinafter referred to as counties) of 17 provincial-level cities and 9 provincial-level counties (cities) in Henan Province was conducted to collect the basic information of diseased counties and villages. The content of fluoride in drinking water and the prevalence of dental fluorosis in children aged 8 - 12 years old were measured on a village by village basis.Results:By the end of 2021, drinking water-borne endemic fluorosis was prevalent in 112 diseased counties in Henan Province, involving 17 450 diseased villages. Among them, 17 433 villages had implemented measures to reduce fluoride and improve water quality, with a water improvement rate of 99.90% (17 433/17 450). There were 14 920 villages with qualified water, and the qualified rate of water fluoride was 85.50% (14 920/17 450). There were a total of 4 232 water improvement projects in all diseased villages, with a normal operation rate of 97.09% (4 109/4 232) and a qualified rate of 93.03% (3 937/4 232) for water fluoride in the projects. The total detection rate of dental fluorosis in children in the province was 9.64% (39 391/408 584), with moderate to severe dental fluorosis accounted for 8.08% (3 182/39 391), the dental fluorosis index was 0.18. The prevalence of fluorosis was negative.Conclusions:In 2021, the prevalence of drinking water-borne endemic fluorosis is widespread in Henan Province, and measures to reduce fluoride and improve water quality in diseased villages have been basically implemented. However, the fluoride content of water in some villages still does not meet the standard, and some water improvement projects cannot operate normally throughout the year. In the future, it is necessary to address the above issues one by one and consolidate the achievements in prevention and control of drinking water-borne endemic fluorosis.

Objective:To master the provincial-level quality assessment of the self-inspection projects for control and evaluation of drinking water-borne endemic fluorosis in the counties (cities, districts) of Henan Province, so as to ensure the quality of self-inspection.Methods:Totally 30 counties (cities, districts) with drinking water-borne endemic fluorosis in Henan Province were selected as project counties (cities, districts), using consulting and checking data, on-site investigation and review, the implementation of self-inspection projects were audited. The water improvement and the water fluorine content, and the prevalence of dental fluorosis in children aged 8-12 were investigated in villages with drinking water-borne endemic fluorosis, and the provincial-level quality assessment of the self-inspection projects was carried out.Results:A total of 99 villages with drinking water-borne endemic fluorosis in 30 counties (cities, districts) were investigated, and all 30 counties (cities, districts) completed the investigation task of self-inspection projects. A total of 99 water samples were collected, and there were 23 counties (cities, districts) with the same results of county (city, district) self-inspection and provincial-level review of water fluorine, accounting for 76.67%; a total of 5 815 children aged 8-12 were investigated, there were 18 counties (cities, districts) with the same results of county (city, district) self-inspection and provincial-level review of dental fluorosis detection rate, accounting for 60.00%.Conclusions:The self-inspection projects of control and evaluation of drinking water-borne endemic fluorosis at the county (city, district) level in Henan Province are completed well. Most of the self-inspection projects are consistent with the provincial-level review results, but the disease diagnosis ability of grass-roots professional personnel and the detection technical level of laboratory technician in some counties (cities, districts) need to be improved.

Objective:To investigate the expression of RASAL3 in intrahepatic cholangiocarcinoma (iCCA) and the mechanism of promoting iCCA development.Methods:Tumor and paracancerous tissues were collected from 185 iCCA patients, the expression of RASAL3 was detected by immunohistochemistry, RT-qPCR and Western blot. The expression of RASAL3 and FXYD6 mRNA and protein in human cholangiocarcinoma cell line and human bile duct epithelial cells were detected with RT-qPCR and Western blot, the cell proliferation was detected with CCK-8 assay, and the activity of Na +-K +-ATPase was also detected. Results:RASAL3 was highly expressed in cholangiocarcinoma tissues and cell lines; Survival analysis showed that RASAL3 overexpression was associated with poor prognosis of cholangiocarcinoma( P<0.05) and knockdown of RASAL3 inhibits the proliferation of cholangiocarcinoma cells; Silencing RASAL3 decreases the expression of FXYD6 inhibiting the activity of Na +-K +-ATPase. Conclusion:RASAL3 is up-regulated in human cholangiocarcinoma, which can promote the occurrence and development of cholangiocarcinoma by activating FXYD6 and affecting Na +-K +-ATPase activity.

Objective:To understand the status of drinking water-borne endemic fluorosis in Henan Province, so as to provide scientific basis for improving prevention and control strategies.Methods:Ten counties (districts, referred to as counties) were selected from drinking water-borne endemic fluorosis areas of Henan Province in 2018. Three villages in each project county were selected according to the disease status of mild, moderate and severe conditions, and the operation status of water improvement projects, water fluoride content and dental fluorosis among children aged 8 to 12 years in each diseased village were monitored.Results:Totally 30 villages were surveyed, all of which were in the water improvement projects; a total of 25 water improvement projects were monitored, all of them were in normal operation, and the water fluoride exceeding standard rate was 28.00% (7/25), the qualified rate of water fluoride in the water improvement projects was 72.00% (18/25). Among them, 21 villages were in normal operation and the water fluoride in the water improvement projects met national standard. In which the detection rate of dental fluorosis among children aged 8 to 12 years was 36.71% (606/1 651), the index of dental fluorosis was 0.74, and the epidemic intensity was extremely mild. Water fluoride of water improvement projects in 9 villages exceeded the national standard, where the detection rate of dental fluorosis among children aged 8 to 12 years was 43.57% (261/599), the index of dental fluorosis was 0.78, and the epidemic intensity was extremely mild. The detection rate of dental fluorosis among children in the villages where the water fluoride of water improvement projects exceeded the national standard was higher than that in the villages where the water fluoride of water improvement projects met the national standard (χ 2=8.752, P < 0.01). Conclusions:The excessive fluorine content in the water of water improvement projects is still serious, and the epidemic is still severe. It is necessary to strengthen the scientific demonstration of the water improvement project construction and the project acceptance upon completion, so as to prevent unqualified projects from being put into use. We will carry out regular water quality monitoring and promptly rectify projects with water quality exceeding the standards.