Objective: To establish a method for determining the molecular weight and molecular weight distribution of Poly(Lactide-co-Glycolide Acid) (PLGA) using Size Exclusion Chromatography-Refractive Index-Multiangle Laser Light Scattering (SEC-RI-MALLS) and Size Exclusion Chromatography-Refractive Index (SEC-RID), and to compare the results obtained from these two methods.
Methods: For SEC-RI-MALLS, tetrahydrofuran was used as the mobile phase, Shodex GPC KF-803L was employed as the chromatographic column with a flow rate of 1 mL·min^-1, column temperature at 30 ℃, and an injection volume of 100 μL. For SEC-RID, tetrahydrofuran was also used as the mobile phase, Agilent PLgel 5 μm MIXD-D was used as the chromatographic column with a flow rate of 1 mL·min^-1, column temperature at 30 ℃, differential detector temperature at 35 ℃, and an injection volume of 20 μL. The molecular weight and molecular weight distribution were calculated using Agilent’s GPC software. The newly established methods were validated methodologically, and the molecular weight and molecular weight distribution of 13 batches of samples were determined.
Results: The precision, accuracy, stability, and repeatability tests for SEC-RI-MALLS showed RSD values of 1.35%, 1.58%, 1.53%, and 1.26%, respectively. The SEC-RID method exhibited good linearity (r=0.999 9), with RSD values for precision, accuracy, stability, and repeatability tests (n=6) of 2.05%, 1.62%, 1.30%, and 2.97%, respectively. The results obtained from SEC-RI-MALLS were lower than those from SEC-RID, and the molecular weight distribution coefficient was smaller, but the results from the paired T-test performed with the value measured by SEC-RID method and the value measured by SEC-RI-MALLS method multiplied a conversion coefficient of 1.5 showed no significant difference between the two methods.
Conclusion: Both methods are stable and reliable, and can be used for the determination of PLGA molecular weight and molecular weight distribution based on the specific situations.

OBJECTIVES: To investigate the role of SF3B3 in gastric cancer (GC) progression and prognosis and its possible mechanisms. METHODS: SF3B3 expression levels in pan-cancer and GC were analyzed using TIMER2.0, GEPIA, and UALCAN databases and validated using immunohistochemistry in GC tissues. Survival curves of GC patients were established using Kaplan-Meier Plotter and the data of a patient cohort our hospital. The independent risk factors for 5-year postoperative survival were identified using Cox regression, and their predictive values were evaluated using ROC analysis. SF3B3-associated biological processes were predicted by bioinformatics enrichment analyses. In GC HGC-27 cells, the effects of lentivirus-mediated SF3B3 knockdown and overexpression on cell proliferation and migration were investigated, and the changes in the key glycolytic proteins and extracellular acidification rate (ECAR) were detected. The influence of SF3B3 expression level on tumorigenesis and glycolytic protein expression in vivo were evaluated in a nude mouse xenograft model. RESULTS: High expression of SF3B3 in GC was associated with poor patient prognosis (P<0.05). The factors affecting 5-year survival outcomes following gastric oncological resection included high SF3B3 expression, a CEA level ≥5μg/L, a CA19-9 level ≥37 kU/L, tumor stage T3-4, and lymph node metastasis stage N2-3 (P<0.05). Bioinformatics analysis showed significant enrichment of SF3B3 in glycolysis. In HGC-27 cells, SF3B3 knockdown significantly inhibited while SF3B3 overexpression enhanced cell proliferation, migration, and invasion. SF3B3 knockdown obviously decreased the expressions of HK2, PKM2 and LDHA proteins and ECAR in HGC-27 cells, whereas SF3B3 overexpression produced the opposite effect. In nude mouse xenograft models, SF3B3 knockdown significantly reduced tumor mass and downregulated expression of HK2, PKM2 and LDHA proteins, and SF3B3 overexpression induced the opposite changes. CONCLUSIONS SF3B3 overexpression is associated with poor prognosis of GC patients and promotes GC cell proliferation, migration and invasion possibly by enhancing glycolysis.
Stomach Neoplasms/diagnosis* ; Humans ; Cell Proliferation ; Prognosis ; Animals ; Mice, Nude ; Cell Line, Tumor ; Mice ; Cell Movement ; Male ; Female

Objective:Based on the benchmarking theory,to elaborate the key issues,paradigm innovations and realization paths of modernized performance management in China's public hospitals,and to provide policy recommendations for the government and hospitals.Methods:Literature/document collection,expert consultation and prototyping were used as methodological support.Results:Hospital performance management lacks management standards,multivariate dynamic indicator systems and realization tools;the digital governance model of"digital technology+management system"has not been established;and horizontal and vertical comparisons among geographic regions,hospitals,departments,and disease types based on standards have not been realized.Innovative paradigms include the establishment of a standard paradigm based on the smallest functional units such as disease types,indexes,bed days,operators,doctors,etc.;the construction of a dynamic index library,the mining of different combinations of indexes and their internal relationships,and the establishment of an evaluation paradigm;the establishment of a longitudinal evaluation of disease types,the evaluation of"specialties,hospitals,and industries",and the positioning of internal functions of hospitals,resource efficiency and the application of healthcare quality evaluation.It creates a multivariate,multidimensional,dynamic evaluation method and visualized evaluation tool and realization path based on big data.Conclusion:It is needed to emancipate the mind to further enhance the cognitive level of digital governance,innovate the paradigm to accelerate the construction of modernized performance management system in public hospitals,and build a platform to promote the application of modernized performance management system in public hospitals.

177Lu-prostate specific membrane antigen(PSMA)radio-ligand therapy has been approved abroad for advanced prostate cancer and has been in several clinical trials in China.Based on domestic clinical practice and experimental data and referred to international experience and viewpoints,the expert group forms a consensus on the clinical application of 177Lu-PSMA radio-ligand therapy in prostate cancer to guide clinical practice.

Objective: To investigate the association of parental knowledge and skills in myopia prevention and control with healthy eye behavior in primary school children, so as to provide a basis for accurate family education. Methods: A total of 4 979 students in grades 1-5 from eight elementary schools in Pudong New Area were sampled between October and December in 2022 by using a stratified cluster sampling method. A self administered questionnaire was used to assess healthy eye behavior in primary school children and parental knowledge and skills in myopia prevention and control. The Chi squared test, independent samples t-test and Logistic regression were used to analyse the association between parental knowledge and skills in myopia prevention and control and healthy eye behaviour in primary school children. Results: Parents of primary school children with a high level of knowledge and skills in myopia prevention and control were 50.97% and 56.36%, respectively. The knowlegde entry scores for parents of lower and middle elementary school students were higher than those of parents of upper primary students with respect to their understanding, on the main causes of myopia in their children, the correct knowledge of myopia prevention and control, the role of family members in helping each other to manage and treat myopia in their children and the parents responsibility to teach their children to use their eyes correctly and scientifically (3.05±1.21, 2.97±1.20; 5.92±0.68, 5.83±0.86; 4.46±0.88, 4.40±0.93; 3.88±1.04, 3.72±1.07); all differences were statistically significant (t=2.04, 3.39, 2.00, 4.87, P<0.05). The differences in the scores of parents of primary school children in different grades for all items were statistically significant (t=2.93-7.31, P<0.05) in the skill entries. Parental knowledge levels were poor for items of full scores that assessed the following: knowing the main causes of their childrens myopia, awareness of the correct knowledge of myopia prevention and control measures, awareness of Comprehensive Prevention and Control Strategy for Children and Adolescents with Myopia, and concerning that their childrens future education and employment will be affected by myopia, understanding the responsibility of parents for guiding children to use their eyes scientifically and correctly, with 12.71%, 22.90%, 19.30%, 21.83% and 22.47% respectively. Parental skills were poor for items of full scores that assessed the following:reminding their children to rest their eyes when doing homework, reading or writing, deliberately avoiding mobile phone use when spending time with their children, the number of times which taking children to the hospital for refractive screening in the past year, and giving their children extra learning tasks, with 33.26%, 15.12%, 9.00% and 5.36% respectively. Compared to parental knowledge in myopia prevention and control, parental skills had a more pronounced effect on the four dimensions of healthy eye behavior (reading and writing, screen time, outdoor activities, and sleep duration) among students in different grades (OR=1.41-3.37, P<0.05). Conclusions Parental knowledge and skills in myopia prevention and control are still insafficient, associated with healthy eye behavior in primary school children. There is a need to strengthen accurate health education for parents on the prevention and control of myopia, to cultivate healthy eye behaviour among primary school students and reduce the incidence of myopia among them.

68Ga-DOTATATE/18F-FDG two-day low-dose total-body PET/CT imaging is increasingly employed to facilitate the diagnosis,prognosis,and heterogeneity assessment of neuroendocrine neoplasms.We present a consensus on operational guideline for a two-day combined imaging from experts in low-dose/ultra-low-dose total-body PET/CT from several domestic medical institutions.

Objective:Based on the benchmarking theory,to elaborate the key issues,paradigm innovations and realization paths of modernized performance management in China's public hospitals,and to provide policy recommendations for the government and hospitals.Methods:Literature/document collection,expert consultation and prototyping were used as methodological support.Results:Hospital performance management lacks management standards,multivariate dynamic indicator systems and realization tools;the digital governance model of"digital technology+management system"has not been established;and horizontal and vertical comparisons among geographic regions,hospitals,departments,and disease types based on standards have not been realized.Innovative paradigms include the establishment of a standard paradigm based on the smallest functional units such as disease types,indexes,bed days,operators,doctors,etc.;the construction of a dynamic index library,the mining of different combinations of indexes and their internal relationships,and the establishment of an evaluation paradigm;the establishment of a longitudinal evaluation of disease types,the evaluation of"specialties,hospitals,and industries",and the positioning of internal functions of hospitals,resource efficiency and the application of healthcare quality evaluation.It creates a multivariate,multidimensional,dynamic evaluation method and visualized evaluation tool and realization path based on big data.Conclusion:It is needed to emancipate the mind to further enhance the cognitive level of digital governance,innovate the paradigm to accelerate the construction of modernized performance management system in public hospitals,and build a platform to promote the application of modernized performance management system in public hospitals.

Objective:Based on the benchmarking theory,to elaborate the key issues,paradigm innovations and realization paths of modernized performance management in China's public hospitals,and to provide policy recommendations for the government and hospitals.Methods:Literature/document collection,expert consultation and prototyping were used as methodological support.Results:Hospital performance management lacks management standards,multivariate dynamic indicator systems and realization tools;the digital governance model of"digital technology+management system"has not been established;and horizontal and vertical comparisons among geographic regions,hospitals,departments,and disease types based on standards have not been realized.Innovative paradigms include the establishment of a standard paradigm based on the smallest functional units such as disease types,indexes,bed days,operators,doctors,etc.;the construction of a dynamic index library,the mining of different combinations of indexes and their internal relationships,and the establishment of an evaluation paradigm;the establishment of a longitudinal evaluation of disease types,the evaluation of"specialties,hospitals,and industries",and the positioning of internal functions of hospitals,resource efficiency and the application of healthcare quality evaluation.It creates a multivariate,multidimensional,dynamic evaluation method and visualized evaluation tool and realization path based on big data.Conclusion:It is needed to emancipate the mind to further enhance the cognitive level of digital governance,innovate the paradigm to accelerate the construction of modernized performance management system in public hospitals,and build a platform to promote the application of modernized performance management system in public hospitals.

Objective:Based on the benchmarking theory,to elaborate the key issues,paradigm innovations and realization paths of modernized performance management in China's public hospitals,and to provide policy recommendations for the government and hospitals.Methods:Literature/document collection,expert consultation and prototyping were used as methodological support.Results:Hospital performance management lacks management standards,multivariate dynamic indicator systems and realization tools;the digital governance model of"digital technology+management system"has not been established;and horizontal and vertical comparisons among geographic regions,hospitals,departments,and disease types based on standards have not been realized.Innovative paradigms include the establishment of a standard paradigm based on the smallest functional units such as disease types,indexes,bed days,operators,doctors,etc.;the construction of a dynamic index library,the mining of different combinations of indexes and their internal relationships,and the establishment of an evaluation paradigm;the establishment of a longitudinal evaluation of disease types,the evaluation of"specialties,hospitals,and industries",and the positioning of internal functions of hospitals,resource efficiency and the application of healthcare quality evaluation.It creates a multivariate,multidimensional,dynamic evaluation method and visualized evaluation tool and realization path based on big data.Conclusion:It is needed to emancipate the mind to further enhance the cognitive level of digital governance,innovate the paradigm to accelerate the construction of modernized performance management system in public hospitals,and build a platform to promote the application of modernized performance management system in public hospitals.

Objective:Based on the benchmarking theory,to elaborate the key issues,paradigm innovations and realization paths of modernized performance management in China's public hospitals,and to provide policy recommendations for the government and hospitals.Methods:Literature/document collection,expert consultation and prototyping were used as methodological support.Results:Hospital performance management lacks management standards,multivariate dynamic indicator systems and realization tools;the digital governance model of"digital technology+management system"has not been established;and horizontal and vertical comparisons among geographic regions,hospitals,departments,and disease types based on standards have not been realized.Innovative paradigms include the establishment of a standard paradigm based on the smallest functional units such as disease types,indexes,bed days,operators,doctors,etc.;the construction of a dynamic index library,the mining of different combinations of indexes and their internal relationships,and the establishment of an evaluation paradigm;the establishment of a longitudinal evaluation of disease types,the evaluation of"specialties,hospitals,and industries",and the positioning of internal functions of hospitals,resource efficiency and the application of healthcare quality evaluation.It creates a multivariate,multidimensional,dynamic evaluation method and visualized evaluation tool and realization path based on big data.Conclusion:It is needed to emancipate the mind to further enhance the cognitive level of digital governance,innovate the paradigm to accelerate the construction of modernized performance management system in public hospitals,and build a platform to promote the application of modernized performance management system in public hospitals.