Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective:To explore the application value of three-dimensional ultrasound(3D-US)combined with two-dimensional trans vaginal sonography(2D-TVS)in diagnosing uterine arteriovenous fistula(UAVF).Methods:A total of 36 patients with suspected UAVF who admitted to Baoding Maternal and Child Health Care Hospital from January 2024 to December 2024 were retrospective selected.All of them underwent 3D-US,2D-TVS and combined examinations of 3D-US and 2D-TVS.The gynecological intravenous contrast-enhanced ultrasound was used as the"gold standard"to compare and analyze the sensitivity,specificity,accuracy rate,positive predictive value and negative predictive value of 3D-US,2D-TVS and the combined examination of them.The diagnostic efficacies of the three diagnostic methods were calculated by the four-grid table method and the analysis of the receiver operating characteristic(ROC)curve.The detection rates of 2D-TVS and combined examination of 2D-TVS and 3D-US for UAVF imaging signs were compared.Results:In 36 patients,gold standard confirmed 26 positive cases and 10 negative cases.The sensitivity,specificity,accuracy rate,positive predictive value and negative predictive value of 2D-TVS examination were respectively 69.23%,80.00%,72.22%,90.00%and 50.00%.These indicators of 3D-US examinations were respectively 84.62%,90.00%,86.11%,95.65%and 69.23%.These indicators of the combined examination were respectively 92.31%,90.00%,91.67%,96.00%and 81.82%.There were not statistically significant differences in these indicators among the three diagnostic methods(P>0.05).However,the sensitivity,accuracy rate of the combined examination were respectively higher than those of 2D-TVS examination,and the differences were statistically significant(x2=4.457,4.600,P<0.05).The detection rates of the sings included lake-like,multicolored Mosaic and blood flow spectrum of high-speed low-resistance in UAVF images of the combined examination were all higher than those of 2D-TVS examination,and the differences were statistically significant(x2=4.000,4.431,4.600,P<0.05).Conclusion:The combination of 3D-US and 2D-TVS can significantly improve the diagnostic sensitivity,accuracy and detection rate of imaging signs in the diagnosis for UAVF,which has important clinical application value.

Objective:To construct an evaluation index system for the effectiveness of ideological and political education in the curriculum of professional master's degree nursing programs, providing an evaluation tool for objectively assessing the teaching quality of ideological and political education in these programs.Methods:The initial draft of the index system was designed based on a review of domestic and international literature. From October 2022 to January 2023, 15 experts were selected using convenience sampling for three rounds of Delphi expert consultation, and the analytic hierarchy process was used to determine the weight of the indicators.Results:The positive response rate from the 15 experts in all three rounds of consultation was 100% (15/15), and the expert authority coefficient was 0.813. The Kendall's coefficient of concordance for the overall indicators in the third round was 0.116 ( P<0.01). The constructed evaluation index system includes 5 first-level indicators (goal and concept, faculty, course resources, teaching implementation, teaching effectiveness), 12 second-level indicators, and 49 third-level indicators. Conclusions:The evaluation index system for the effectiveness of ideological and political education in the curriculum of professional master's degree nursing programs demonstrates good scientific validity and reliability. It can provide objective and quantitative evaluation criteria for the development of ideological and political education in these programs.

Objective:To explore the application value of three-dimensional ultrasound(3D-US)combined with two-dimensional trans vaginal sonography(2D-TVS)in diagnosing uterine arteriovenous fistula(UAVF).Methods:A total of 36 patients with suspected UAVF who admitted to Baoding Maternal and Child Health Care Hospital from January 2024 to December 2024 were retrospective selected.All of them underwent 3D-US,2D-TVS and combined examinations of 3D-US and 2D-TVS.The gynecological intravenous contrast-enhanced ultrasound was used as the"gold standard"to compare and analyze the sensitivity,specificity,accuracy rate,positive predictive value and negative predictive value of 3D-US,2D-TVS and the combined examination of them.The diagnostic efficacies of the three diagnostic methods were calculated by the four-grid table method and the analysis of the receiver operating characteristic(ROC)curve.The detection rates of 2D-TVS and combined examination of 2D-TVS and 3D-US for UAVF imaging signs were compared.Results:In 36 patients,gold standard confirmed 26 positive cases and 10 negative cases.The sensitivity,specificity,accuracy rate,positive predictive value and negative predictive value of 2D-TVS examination were respectively 69.23%,80.00%,72.22%,90.00%and 50.00%.These indicators of 3D-US examinations were respectively 84.62%,90.00%,86.11%,95.65%and 69.23%.These indicators of the combined examination were respectively 92.31%,90.00%,91.67%,96.00%and 81.82%.There were not statistically significant differences in these indicators among the three diagnostic methods(P>0.05).However,the sensitivity,accuracy rate of the combined examination were respectively higher than those of 2D-TVS examination,and the differences were statistically significant(x2=4.457,4.600,P<0.05).The detection rates of the sings included lake-like,multicolored Mosaic and blood flow spectrum of high-speed low-resistance in UAVF images of the combined examination were all higher than those of 2D-TVS examination,and the differences were statistically significant(x2=4.000,4.431,4.600,P<0.05).Conclusion:The combination of 3D-US and 2D-TVS can significantly improve the diagnostic sensitivity,accuracy and detection rate of imaging signs in the diagnosis for UAVF,which has important clinical application value.

Objective:To construct an evaluation index system for the effectiveness of ideological and political education in the curriculum of professional master's degree nursing programs, providing an evaluation tool for objectively assessing the teaching quality of ideological and political education in these programs.Methods:The initial draft of the index system was designed based on a review of domestic and international literature. From October 2022 to January 2023, 15 experts were selected using convenience sampling for three rounds of Delphi expert consultation, and the analytic hierarchy process was used to determine the weight of the indicators.Results:The positive response rate from the 15 experts in all three rounds of consultation was 100% (15/15), and the expert authority coefficient was 0.813. The Kendall's coefficient of concordance for the overall indicators in the third round was 0.116 ( P<0.01). The constructed evaluation index system includes 5 first-level indicators (goal and concept, faculty, course resources, teaching implementation, teaching effectiveness), 12 second-level indicators, and 49 third-level indicators. Conclusions:The evaluation index system for the effectiveness of ideological and political education in the curriculum of professional master's degree nursing programs demonstrates good scientific validity and reliability. It can provide objective and quantitative evaluation criteria for the development of ideological and political education in these programs.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

OBJECTIVE To investigate the normal range of fraction exhaled nitric oxide(FeNO) in healthy schoolchildren in Beijing, Tianjin and Hebei Province. METHODS A total of 337 schoolchildren(161 males and 176 females) in Beijing, Tianjin and Hebei Province were selected randomly in our outpatient clinic and met the health standards. FeNO values were measured using NIOX. Age, height, weight and body mass index(BMI) were investigated. At the same time, skin prick tests were performed on children with suspected atopy. RESULTS Geometric mean of FeNO value in healthy schoolchildren in Beijing, Tianjin and Hebei Province was 13 ppb(part per billion, ppb), and the 95％ Confidence Interval(CI, bias distribution) was 5-23 ppb, which was related to the gender of schoolchildren(P ＜0.001). There was no signif icant cor relation between age, height, weight, body mass index(BMI) and regional differences(P all＞0.05). FeNO values were no significant difference among the three regions(P ＞0.05); the geometric mean of FeNO values were 13 ppb in Beijing, 13 ppb in Tianjin, and 14 ppb in Hebei; 95％CI was 5 to 21 ppb, 5 to 21 ppb, 5 to 23 ppb, respectively. CONCLUSION FeNO values of healthy schoolchildren in Beijing, Tianjin and Hebei provinces are only significantly correlated with gender. However, FeNO values are highest among schoolaged girls in Hebei, and 23 ppb is the 95％ normal range of FeNO in healthy schoolchildren in Beijing, Tianjin and Hebei province. Gender and regional factors must be considered when FeNO values are evaluated.

BACKGROUND:EdU is a new nuclear marker, and currently, it is rarely reported.
OBJECTIVE: To determine the optimal concentration of EdU to label human umbilical cord mesenchymal stem cels.
METHODS: Human umbilical cord mesenchymal stem cels were isolated, purified and subcultured. Cel morphology and growth were observed under inverted microscope. Flow cytometry was used to identify cel surface markers, as wel as adipogenic identification. EdU at concentrations of 5, 10, 20, 50, 100 μmol/L was used to label human umbilical cord mesenchymal stem cels for 24 hours. The optimal concentration that resulted in the highest labeling efficiency was selected, and then cel proliferation curve was drawn.
RESULTS AND CONCLUSION:Under the inverted microscope, cels grew adherently in a long spindle shape, and EdU-labeled cels had the same morphology. Flow cytometry showed that cels were positive for CD44, and had adipogenic differentiation ability. When the concentration of EdU was 5 and 10 μmol/L, the labeling efficiency was the highest, indicating that 5 and 10 μmol/L are the optimal concentrations of EdU to label human umbilical cord mesenchymal stem cels.

BACKGROUND:Cold trypsin digestion is rarely reported to culture umbilical cord mesenchymal stem cells. OBJECTIVE:To compare the biological characteristics of umbilical cord mesenchymal stem cells cultured by cold trypsin digestion and tissue explant method. METHODS:Human umbilical cord mesenchymal stem cells were isolated, purified and passaged using cold trypsin digestion and tissue explant method, and then the first adhesion time and cellcycle were recorded. Morphology of umbilical cord mesenchymal stem cells was observed under inverted phase contrast microscope to draw growth curve of cells at passage 3. Flow cytometry was used to detect the surface markers of passage 3 umbilical cord mesenchymal stem cells, and Nestin expression was detected in passage 3 cells after 3 days culture in neural induction medium by fluorescence immunochemistry staining. RESULTS AND CONCLUSION:These two methods were both successful to harvest umbilical cord mesenchymal stem cells, but the first adhesion time was earlier in cells cultured by cold trypsin digestion than tissue explant method (P<0.05), and there was no difference in primary cellcycle (P>0.05). Under the inverted microscope, cells grew adherently and presented fibroblast-like shape. However, the minority of primary cells under induction of cold trypsin digestion was polygonal, irregular, and had larger cellvolume than those cultured by tissue explant method. Passage 3 cells cultured by tissue explant method showed faster proliferation rate than those cultured by cold trypsin digestion, and at logarithmic growth phase, cells cultured by these two methods were significant different in cellnumber (P<0.05). Two types of cells had a uniform cellphenotype, both of which expressed CD29, CD105, but did not express CD34, CD45. Under induction, passage 3 cells cultured by these two methods were both positive for nestin. These findings indicate that these two methods can both be used to culture umbilical cord mesenchymal stem cells, but the tissue explant method is more suitable for culture of umbilical cord mesenchymal stem cells and exhibits less damage to cells.

BACKGROUND:In order to promote the recovery of nerve function after peripheral nerve injury, we should try to accelerate the regeneration of injured nerve axons on one hand, and try to improve the accuracy of proximal and distal nerve docking on the other hand. OBJECTIVE:To explore the selective regeneration of nerve axons after peripheral nerve injury in models with crush injury and freeze injury. METHODS:Total y 110 healthy male Sprauge-Dawley rats, 8 weeks old, were selected and randomly divided into three groups. The rates received crush injury, freeze injury and normal control ed surgery on femoral nerve trunk. At 2, 3, 6 and 12 weeks after modeling, general behavioral examination was performed, and then pure blue and red fluorescence were used to label the wrong-way ingrowth saphenous nerve and correct ingrowth femoral nerve muscular branches respectively;retrograde labeling the motor neurons in order to observe the distribution and amount of tracer in spinal cord anterior horn;electrophysiological examination was performed at 8 weeks after modeling, and analyzed statistical y. RESULTS AND CONCLUSION:Rats from both crush injury group and freeze injury group displayed decreased motion radius of hind limbs after surgery, and the stretch function was limited;but with time prolonging, the functions were recovered. The motor evoked potentials could be observed at the quadriceps, and there was no significant difference between two groups (P>0.05). The number of neurons stained red in the spinal cord anterior horn was increased gradual y in both crush injury group and the freeze injury group under fluorescence microscope. The number of neurons stained red in the crush injury group was significantly higher than that in the freeze injury group (P<0.05), and the number of blue-stained and purple-stained neurons was decreased gradual y. The results suggest that keeping the perineurium intact can gain accurate docking in axon regeneration and the recovery of injured limb functions, even though the damaged range is large.