Neuraminidase(NA),a glycoprotein on the surface of the influenza virus,plays a crucial role in viral escape and serves as a stable target for drug candidates.Monoclonal antibodies targeting the NA active site can bind to multiple influenza virus subtypes and inhibit the spread of influenza virus through various mechanisms,such as neutralizing,mediating antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotox-icity.In vivo experiments have shown that human monoclonal antibodies targeting the influenza virus NA can ef-fectively exert preventive and therapeutic effects,rescuing mice infected with lethal doses and reducing viral ti-ters in lungs of mice.This article provides a review of the currently reported human monoclonal antibodies targe-ting NA of Influenza A and Influenza B viruses,providing new ideas and prospects for the subsequent development of anti-influenza drugs.

Objective:To compare the effects of different automatic normal tissue objective(NTO)weights(WNTO)of Eclipse planning system on intensity modulated radiation therapy(IMRT)of fixed field for abdominal tumor.Methods:Twenty patients with rectal cancer and twenty patients with cervical cancer who received radiotherapy in The Second People's Hospital of Huludao from September 2022 to January 2024 were selected.5 groups of different plans[WNTO20,40,60,80 and 100]were respectively formulated for each patient.Among of them,the WNTO20 plan was control group,and other 4 groups were respectively WNTO40 group,WNTO60 group,WNTO80 group and WNTO100 group.Then,the differences in dosimetry and monitor units(MU)among 5 groups of plans were compared.Results:In the WNTO 80 and 100 groups of patients with rectal cancer,the conformation index(CI)values of target regions of them were respectively 1.02±0.04 and 1.00±0.03,all of which approached to 1,and the CI values of two groups were lower than that of control group,and the differences were statistically significant(t=15.986,18.422,P<0.05).The homogeneity index(HI)of WNTO 80 and 100 groups were respectively 0.09±0.12 and 0.10±0.14,which were higher than that of control group,and the differences were statistically significant(t=-1.371,-1.463,P<0.05).The 52Gy dose volume(Vmax52)of small intestine of the two groups were respectively(4.48±14.49)and(4.77±10.47)cm3,which were higher than that of control group,and the differences were statistically significant(t=-1.360,-2.005,P<0.05).The 30 Gy dose volume percentage(V30 Gy)values of the right femoral heads of the two groups were respectively(12.28±4.57)%and(10.96±4.17)%,which were lower than that of control group,and the differences were statistically significant(t=6.893,6.75,P<0.05).The 30 Gy dose volume percentage(V30 Gy)values of the left femoral head of the two groups were respectively(11.57±4.41)%and(10.17±3.78)%,which were lower than that of control group,and the differences were statistically significant(t=6.782,5.963,P<0.05).The MU value of WNTO100 group was(1254±93)MU,which was higher than that of control group,and the difference was statistically significant(t=-3.741,P<0.05).In the WNTO 80 and 100 groups of patients with cervical cancer,the CI values of target regions of them were respectively 1.03±0.32 and 1.02±0.03,all of which approached to 1,and the CI values of the two groups were lower than those of control group,and the differences were statistically significant(t=20.069,19.475,P<0.05).The HI values of them were respectively 0.07±0.05 and 0.08±0.01,which were higher than that of control group,and the differences were statistically significant(t=-12.445,-19.478,P<0.05).The V30 Gy values of the right femoral heads of the two groups were respectively(16.11±4.71)%and(14.90±4.56)%,which were lower than that of control group,and the differences were statistically significant(t=7.875,8.020,P<0.05).The V30 Gy values of the left femoral head of the two groups were respectively(15.21±3.71)%and(13.93±3.77)%,which were lower than that of control group,and the differences were statistical significance(t=7.617,7.436,P<0.05).The Vmax52 of small intestine of the two groups were respectively(0.82±1.10)and(4.47±8.81)cm3,which were higher than that of control group,and the difference was statistically significant(t=-2.985,-2.388,P<0.05).Conclusion:The WNTO80 is recommended for IMRT plan of radiotherapy on abdominal tumor,which can more quickly and better meet the assessment conditions of IMRT plan.

With the advancement of economic development and clear aligner technology,invisible orthodontics has become an important treatment approach for malocclusion.However,in extraction cases involving anterior tooth retraction,the limited three-dimensional force control of aligners often leads to lingual tipping of incisors,deepened overbite,and anchorage loss of posterior teeth,thereby increasing the complexity and uncertainty of orthodontic treatment.As an effective tool for simulating complex biomechanical behaviors,finite element analysis(FEA)enables quantitative assessment of tooth movement and stress distribution in the periodontium,providing theoretical support for optimizing aligner design.This review focuses on FEA studies of anterior tooth retraction using clear aligners in extraction cases,summarizes tooth movement characteristics,and discusses key influencing factors including aligner parameters,movement patterns,attachment design,and auxiliary appliances.Finally,the future directions of FEA in dynamic simulation and personalized modeling are explored to support more predictable and effective clinical outcomes.

Objective To investigate the perioperative use of antimicrobial agents in class Ⅰ incisional ophthalmic surgeries in secondary first-class and above medical institutions in Shanghai City,and provide a basis for the rational use of antimicrobial agents in such surgeries.Methods Perioperative antimicrobial prophylaxis(PAP)in patients undergoing class Ⅰ incisional ophthalmic surgery reported by secondary first-class and above hospitals in Shanghai City from 2017 to 2022 was collected retrospectively.The prophylactic use rate,types,rationality of selection,and timing of use of antimicrobial agents were analyzed comprehensively.Results From 2017 to 2022,a total of 54 868 cases of class Ⅰ incisional ophthalmic surgeries were reported from secondary first-class and above hospitals in Shanghai City.The PAP rates in tertiary comprehensive hospitals,tertiary specialty hospitals,tertiary traditional Chinese medicine hospitals,and secondary comprehensive hospitals were 4.72％,1.79％,3.22％,and 6.63％,re-spectively.The overall PAP rate showed a yearly decreasing trend,from 6.39％in 2017 to 2.31％in 2021.Among different types of hospitals,the PAP rate in secondary comprehensive hospitals decreased most significantly,from 12.72％in 2017 to 0.53％in 2022.The main types of prophylactic antimicrobial use were first-,second-and third-generation cephalosporins,and quinolones.The rational selection rates of antimicrobial agents were highest in ter-tiary comprehensive hospitals(17.13％)and lowest in tertiary specialty hospitals(1.08％).The PAP rates in sys-temic veins 0.5-1 hour before surgery were highest in tertiary specialty hospitals(88.17％)and lowest in tertiary comprehensive hospitals(71.53％).The withdrawal rates of antimicrobial agents within 24 hours after surgery were highest in tertiary traditional Chinese medicine hospitals(80.87％)and lowest in tertiary specialty hospitals(13.26％).Conclusion The PAP for class Ⅰ incisional ophthalmic surgeries in secondary first-class and above medical institutions in Shanghai City still presents certain irrational phenomena in terms of antimicrobial types and administration routes.The administration rate 0.5-1 hour before surgery and withdrawal rate of antimicrobial agents within 24 hours after surgery need to be further improved.Enhanced management is necessary to promote more rational use of antimicrobial agents.

Metabolic dysfunction-associated fatty liver disease （MAFLD） is a common chronic liver disease in clinical practice， and macrophages are directly involved in the development， progression， and prognosis of MAFLD. Studies have confirmed that glucose metabolic reprogramming in macrophages directly affects immune function， which in turn affects the local inflammatory environment of liver and hepatocyte metabolism. This article reviews the changes in glucose metabolism of macrophages and the corresponding key molecules in the pathogenesis of MAFLD， in order to provide new targets and strategies for the prevention and treatment of MAFLD in the future.

Objective To investigate the changes in the tumor microenvironment of pancreatic cancer(PDAC)complicated with diabetes mellitus(DM)in a mouse model of hyperglycemia and orthotopic pancreatic cancer by analyzing transcriptome and single-cell transcriptome data in order to identify potential therapeutic targets.Method By integrating single-cell transcriptome and bulk transcriptome data,bioinformatics analysis was conducted to compare the characteristics of tumor cells and tumor immune microenvironment between PDAC patients with DM(DM group)and those without DM(non-DM group).Twenty male C57BL/6 mice(6 weeks old,weighing 18～20 g)were randomly divided into a hyperglycemic group[STZ group,continuous intraperitoneal injection of 50 mg/kg streptozocin(STZ)(final concentration of 1％)dissolved in citrate buffer],and a control group(Control group,an equivalent volume of citrate buffer without STZ at the same time points),with 10 mice in each group.Tail-tip blood glucose level was measured to monitor glycemic status.After orthotopic inoculation of pancreatic cancer cells in both Control and STZ groups,tumor-infiltrating immune cells were harvested.Flow cytometry was employed to determine the effects of hyperglycemia on:total CD8+T cell and Treg cell populations;CD8+T cell subsets expressing Ki67,TNF-α,granzyme B(GZMB)and IFN-γ;surface expression of PD-1,lymphocyte activation gene-3(LAG-3)and T cell immunoglobulin and mucin domain-3(Tim-3)on CD8+T cells;programmed death-ligand 1(PD-L1)expression on tumor cells;and tumor-associated macrophage surface expression of major histocompatibility complex classⅠ(MHC-Ⅰ)and cluster of differentiation 206(CD206).Results Bioinformatics analysis revealed that,compared to the non-DM group,the genes significantly up-regulated in the DM group were associated with poor prognosis(P＜0.001).The proportion of type 2 ductal cells was increased in the DM group,exhibiting higher levels of copy number variation(P＜0.001).In the tumor immune microenvironment of the DM group,there was an increase in the proportion of Treg cells(P＜0.05)and an elevated exhaustion score for CD8+T cells(P＜0.001),accompanied by down-regulated expression of effector molecules,up-regulated expression of inhibitory checkpoints,and a significant increase in the M2 score of M2-like macrophages(P＜0.001).Animal experiments and flow cytometry found that,compared to the Control group,the STZ group had a shorter survival time(P＜0.001),with decreased proportions of total CD8+T cells(P＜0.01)and CD8+T cells expressing Ki67,TNF-α,GZMB and IFN-γ(P＜0.01),increased proportion of Treg cells(P＜0.001),up-regulated expression of PD-1,LAG-3 and Tim-3 on the surface of CD8+T cells(P＜0.001),and up-regulation of PD-L1 on tumor cell surface(P＜0.001)and enhanced expression of CD206 on the surface of tumor-associated macrophages,while down-regulated expression of MHC-Ⅰ(P＜0.001).Conclusion High glucose promotes the formation of an immunosuppressive microenvironment in PDAC,and targeting type 2 ductal cells and immunosuppressive cells in the tumor microenvironment,combined with dual immune checkpoint antibody therapy,may improve patient prognosis.

Objective:To compare the effects of different automatic normal tissue objective(NTO)weights(WNTO)of Eclipse planning system on intensity modulated radiation therapy(IMRT)of fixed field for abdominal tumor.Methods:Twenty patients with rectal cancer and twenty patients with cervical cancer who received radiotherapy in The Second People's Hospital of Huludao from September 2022 to January 2024 were selected.5 groups of different plans[WNTO20,40,60,80 and 100]were respectively formulated for each patient.Among of them,the WNTO20 plan was control group,and other 4 groups were respectively WNTO40 group,WNTO60 group,WNTO80 group and WNTO100 group.Then,the differences in dosimetry and monitor units(MU)among 5 groups of plans were compared.Results:In the WNTO 80 and 100 groups of patients with rectal cancer,the conformation index(CI)values of target regions of them were respectively 1.02±0.04 and 1.00±0.03,all of which approached to 1,and the CI values of two groups were lower than that of control group,and the differences were statistically significant(t=15.986,18.422,P<0.05).The homogeneity index(HI)of WNTO 80 and 100 groups were respectively 0.09±0.12 and 0.10±0.14,which were higher than that of control group,and the differences were statistically significant(t=-1.371,-1.463,P<0.05).The 52Gy dose volume(Vmax52)of small intestine of the two groups were respectively(4.48±14.49)and(4.77±10.47)cm3,which were higher than that of control group,and the differences were statistically significant(t=-1.360,-2.005,P<0.05).The 30 Gy dose volume percentage(V30 Gy)values of the right femoral heads of the two groups were respectively(12.28±4.57)%and(10.96±4.17)%,which were lower than that of control group,and the differences were statistically significant(t=6.893,6.75,P<0.05).The 30 Gy dose volume percentage(V30 Gy)values of the left femoral head of the two groups were respectively(11.57±4.41)%and(10.17±3.78)%,which were lower than that of control group,and the differences were statistically significant(t=6.782,5.963,P<0.05).The MU value of WNTO100 group was(1254±93)MU,which was higher than that of control group,and the difference was statistically significant(t=-3.741,P<0.05).In the WNTO 80 and 100 groups of patients with cervical cancer,the CI values of target regions of them were respectively 1.03±0.32 and 1.02±0.03,all of which approached to 1,and the CI values of the two groups were lower than those of control group,and the differences were statistically significant(t=20.069,19.475,P<0.05).The HI values of them were respectively 0.07±0.05 and 0.08±0.01,which were higher than that of control group,and the differences were statistically significant(t=-12.445,-19.478,P<0.05).The V30 Gy values of the right femoral heads of the two groups were respectively(16.11±4.71)%and(14.90±4.56)%,which were lower than that of control group,and the differences were statistically significant(t=7.875,8.020,P<0.05).The V30 Gy values of the left femoral head of the two groups were respectively(15.21±3.71)%and(13.93±3.77)%,which were lower than that of control group,and the differences were statistical significance(t=7.617,7.436,P<0.05).The Vmax52 of small intestine of the two groups were respectively(0.82±1.10)and(4.47±8.81)cm3,which were higher than that of control group,and the difference was statistically significant(t=-2.985,-2.388,P<0.05).Conclusion:The WNTO80 is recommended for IMRT plan of radiotherapy on abdominal tumor,which can more quickly and better meet the assessment conditions of IMRT plan.

Neuraminidase(NA),a glycoprotein on the surface of the influenza virus,plays a crucial role in viral escape and serves as a stable target for drug candidates.Monoclonal antibodies targeting the NA active site can bind to multiple influenza virus subtypes and inhibit the spread of influenza virus through various mechanisms,such as neutralizing,mediating antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotox-icity.In vivo experiments have shown that human monoclonal antibodies targeting the influenza virus NA can ef-fectively exert preventive and therapeutic effects,rescuing mice infected with lethal doses and reducing viral ti-ters in lungs of mice.This article provides a review of the currently reported human monoclonal antibodies targe-ting NA of Influenza A and Influenza B viruses,providing new ideas and prospects for the subsequent development of anti-influenza drugs.

Objective:To investigate the current status of intellectual property (IP) knowledge, awareness, and perceived barriers among healthcare workers in community health centers.Methods:This cross-sectional study was conducted from October to November 2022. A self-designed questionnaire assessing IP knowledge, awareness, difficulties in patent applications, and willingness to participate in IP-related activities was administered to 366 healthcare workers across all 13 community health centers in Shanghai Minhang District.Results:Among the 366 respondents, 42.6% (156/366) self-reported awareness of basic IP concepts, while 23.8% (87/366) self-reported awareness of the patent application process. Only 4.1% (15/366) had patent application experience. Significant differences in self-reported awareness of basic IP concepts were found across educational levels and years of work experience ( P<0.05). Similarly, significant differences in awareness of the patent application process were observed across educational levels, years of work experience, age groups, and patent application experience ( P<0.05). Logistic regression analysis revealed that higher educational attainment was positively associated with awareness of both basic IP concepts and the patent application process. Longer work experience was negatively associated with awareness of basic IP concepts. Having patent application experience was positively associated with awareness of the patent application process. A majority (86.6%, 317/366) expressed strong willingness to engage in IP-related activities. However, 82.8% (303/366) perceived patent applications as challenging, with the primary reported obstacle being unfamiliarity with the application procedures (85.8%, 314/366). Conclusion:A gap exists between self-evaluation and actual knowledge of IP among community health workers in Shanghai Minhang District. Nonetheless, their willingness to participate in IP activities is high, with the primary obstacle identified as a lack of understanding of the patent application process.

With the advancement of economic development and clear aligner technology,invisible orthodontics has become an important treatment approach for malocclusion.However,in extraction cases involving anterior tooth retraction,the limited three-dimensional force control of aligners often leads to lingual tipping of incisors,deepened overbite,and anchorage loss of posterior teeth,thereby increasing the complexity and uncertainty of orthodontic treatment.As an effective tool for simulating complex biomechanical behaviors,finite element analysis(FEA)enables quantitative assessment of tooth movement and stress distribution in the periodontium,providing theoretical support for optimizing aligner design.This review focuses on FEA studies of anterior tooth retraction using clear aligners in extraction cases,summarizes tooth movement characteristics,and discusses key influencing factors including aligner parameters,movement patterns,attachment design,and auxiliary appliances.Finally,the future directions of FEA in dynamic simulation and personalized modeling are explored to support more predictable and effective clinical outcomes.