ObjectiveTo observe the effect of M1 bone marrow-derived macrophages （M1-BMDM） with Wnt5a knockdown on liver fibrosis and regeneration in a rat model of liver cirrhosis， and to investigate its gain-of-function effect compared with unmodified M1-BMDM. MethodsPrimary bone marrow-derived macrophages were isolated from rats and were polarized to M1 phenotype to construct M1-BMDM^Wnt5a-KD cells. A rat model of liver cirrhosis induced by CCl₄/2-AAF was established， and at the end of week 8， rats were randomly divided into model group， M1-BMDM group， M1-BMDM Wnt5a-knockdown empty vector group （M1-BMDM^KD-EV group）， and M1-BMDM Wnt5a-knockdown group （M1-BMDM^Wnt5a-KD group）， with 6 rats in each group. On the first day of week 9， the rats in each group were given a single injection of the corresponding cells via the caudal vein， along with an intraperitoneal injection of a CCR2 inhibitor. Six rats without any treatment were used as normal control group. Samples were collected at the end of week 12 to assess liver histopathology， serum liver function parameters， hepatic stellate cell activation， and the expression levels of mature hepatocyte markers. A one-way analysis of variance was used for comparison of continuous data between multiple groups， and the least significant difference t-test was used for further comparison between two groups. ResultsCompared with the model group， all cell treatment groups had significant alleviation of liver inflammatory response and significant reductions in the activities of alanine aminotransferase and aspartate aminotransferase （AST） in serum （all P<0.01）， and the M1-BMDM^Wnt5a-KD group had a significantly lower serum level of AST than the M1-BMDM group （P<0.05）. The semi-quantitative analysis based on immunohistochemical staining showed that compared with the model group， all cell treatment groups had a significant reduction in the percentage of CD68-positive area （all P<0.05）， and compared with the M1-BMDM^KD-EV group， the M1-BMDM^Wnt5a-KD group had a significant reduction in the percentage of CD68-positive area and a significant increase in the percentage of CD163-positive area （both P<0.05）. Compared with the model group， all cell treatment groups had significant reductions in the mRNA expression levels of CD68 and tumor necrosis factor-α （all P<0.05） and the protein expression level of CD68 （all P<0.01）； compared with the M1-BMDM^KD-EV group， the M1-BMDM^Wnt5a-KD group had significant increases in the protein and mRNA expression levels of CD163 （both P<0.05）， significant reductions in the protein and mRNA expression levels of CD68 （both P<0.05）， and a significant reduction in the protein expression level of tumor necrosis factor-α （P<0.01）. Sirius Red collagen staining and alpha-smooth muscle actin （α-SMA） immunohistochemical staining showed that compared with the model group， all cell treatment groups had significant alleviation of liver collagen deposition and α-SMA-positive area， with the most significant changes in the M1-BMDM^Wnt5a-KD group， and compared with the M1-BMDM^KD-EV group， the M1-BMDM^Wnt5a-KD group had significantly smaller Sirius Red-positive area and α-SMA-positive area and a significantly lower content of hydroxyproline in liver tissue （all P<0.05）. Compared with the M1-BMDM^KD-EV group， the M1-BMDM^Wnt5a-KD group had significant reductions in the protein and mRNA expression levels of α-SMA and the mRNA expression level of COL-I and TGF-β （all P<0.05）. Compared with the model group， all cell treatment groups had a significant increase in the protein expression level of HNF-4α in liver tissue （all P<0.05）， and the M1-BMDM^Wnt5a-KD group had significantly higher protein and mRNA expression levels of HNF-4α and hepatocyte specific antigen than the M1-BMDM^KD-EV group （both P<0.05）. The M1-BMDM^Wnt5a-KD group had a significantly higher serum level of albumin than the M1-BMDM^KD-EV group （P<0.01）. Immunofluorescence co-staining showed that compared with the model group， all cell treatment groups had a significant increase in the number of cells stained positive for HNF and HNF-4α and Ki67 （all P<0.01）， and the M1-BMDM^Wnt5a-KD group had a significantly higher number of such cells than the M1-BMDM^KD-EV group （P<0.05）. ConclusionInhibition of Wnt5a expression enhances the therapeutic effect of M1-BMDM on rats with liver cirrhosis induced by CCl₄/2-AAF， which provides new ideas for enhancing the anti-cirrhotic effect of M1-BMDM through genetic modification.

[摘 要] 目的：探讨同源异型盒蛋白D11（HOXD11）对Ki-67的转录调控作用及其对喉鳞状细胞癌（LSCC）细胞恶性生物学行为的影响和机制。方法：结合高通量测序数据，通过GEO、UALCAN数据库分析HOXD11在LSCC中差异表达。收集2022年1月至2025年1月联勤保障部队第九八〇医院手术切除的60例LSCC患者的癌及癌旁组织标本，以及人LSCC细胞系AMC-HN-8、TU-177、TU-686和人正常喉上皮细胞（HNLEC），构建敲低或过表达HOXD11的细胞系，将细胞分为对照组、HOXD11敲低组及HOXD11过表达组。通过RT-qPCR法检测HOXD11和Ki-67基因在LSCC组织和细胞中mRNA表达水平，免疫组织化学（IHC）法分析两者在LSCC组织中的蛋白表达及分布，WB法进一步验证蛋白差异表达。采用MTS、克隆形成实验及Transwell实验分别检测敲低或过表达HOXD11对LSCC细胞增殖、迁移与侵袭的影响。通过双萤光素酶报告基因实验和染色质免疫沉淀（ChIP）实验验证HOXD11对Ki-67启动子活性的调控作用。结果：GEO和UALCAN数据库分析表明，HOXD11在LSCC中高表达（P < 0.01）。在LSCC组织中HOXD11和Ki-67 mRNA和蛋白表达均显著高于癌旁组织（均P < 0.01），同时，两者表达水平之间存在正相关（r = 0.26，P < 0.05）；LSCC细胞系中HOXD11 mRNA表达显著高于HNLEC（均P < 0.01）。敲低HOXD11显著抑制LSCC细胞的增殖、迁移和侵袭能力（均P < 0.01），而过表达HOXD11则促进细胞的这些恶性生物学行为（均P < 0.01）。双萤光素酶报告基因实验及ChIP实验均证实，HOXD11可直接结合到Ki-67启动子区上，调控其表达（P < 0.01）。回复实验显示，过表达Ki-67可部分逆转敲低HOXD11对LSCC细胞增殖、迁移与侵袭的抑制作用（均P < 0.01）。结论：HOXD11在LSCC组织及细胞系中均呈高表达，其机制在于通过直接调控Ki-67的转录活性，从而增强LSCC细胞的增殖、迁移及侵袭能力。

Objective:To explore the psychological vulnerability characteristics of patients after percutaneous coronary intervention (PCI) based on symptom network analysis, and to provide evidence for maintining their psychological health.Methods:Using a cross-sectional survey method, from October 2023 to March 2024, a convenience sampling approach was employed to conduct a questionnaire survey among patients who underwent percutaneous coronary intervention (PCI) in the general ward of the Cardiology Department at Peking University Third Hospital. The survey involved a general information questionnaire and Mental Vulnerability Questionnaire. The R language was used to construct a symptom network to describe the relationship between each symptom of patients′psychological vulnerability, and its centrality index was calculated.Results:A total of 260 post-PCI patients were enrolled, including191 males and 69 females, with a mean age of (62.38 ± 12.91) years and a total psychological vulnerability score of (47.25 ± 13.18). Multiple linear regression analysis showed that the level of mental vulnerability was higher in patients with female gender ( β = 0.207, P = 0.001) and higher number of comorbidities/past history ( β = 0.126, P = 0.039). In the symptom network analysis, the symptoms with the highest node strength, tight centrality, and mediator centrality were "You often feeling unwell" ( rs = 1.25, rc = 0.003 45, rb = 2.61), "You always in a bad mood" ( rs = 1.15) and "You often have anxiety attacks" ( rs = 1.13) were second only to "You often feeling unwell" in the center of intensity. Conclusions:The core symptom of psychological vulnerability in post-PCI patients is "You often feeling unwell", and mental symptoms are in a more central position. Nursing staff should take mental symptoms as the target of intervention, and strengthen the holistic care for patients′physical-psychological-mental symptoms, so as to effectively reduce the level of psychological vulnerability of the patients, and to maintain their psychological health.

Objective:To explore the effects of radical resection of pelvic autonomic nerve sparing cervical cancer on urodynamics, sexual function and prognosis of patients with cervical cancer.Methods:A total of 76 patients with cervical cancer admitted to Dingzhou People’s Hospital from Jan. 2021 to Jan. 2023 were selected as research objects, and all patients were divided into control group and study group by random number table method, with 38 cases in each group. The control group was treated with traditional laparoscopic radical cervicectomy, and the study group was treated with laparoscopic radical cervicectomy preserving pelvic autonomic nerve. Perioperative indexes, preoperative and postoperative urodynamics, tumor markers, sexual function and postoperative adverse reactions were compared between the two groups.Results:The operation time of the observation group was longer than that of the control group ( P<0.05). The exhaust time and defecation time of the observation group were lower in the observation group than in the control group ( P<0.05). There was no significant difference in the amount of blood loss or lymph node dissection between the two groups ( P>0.05). There was no significant difference in urodynamic indexes between the two groups before surgery ( P>0.05). In the observation group after surgery, the bladder compliance, maximum urine flow rate and maximum detrusor systolic blood pressure were (81.55±13.18 mL/cm H 20, 20.46±4.65 L/s, 35.09±7.41 cm H 20), while they were (60.14±10.27) mL/cm H 20, (14.48±3.92) L/s, (28.15±6.94) cm H 20 in the control group. The observation group were higher than the control group ( P<0.05). There was no significant difference in maximum bladder volume between the two groups ( P>0.05). There was no significant difference in sexual function scores between the two groups before surgery ( P>0.05). The scores of sexual desire, vaginal wetness and pain, sexual arousal and orgasm, and sexual satisfaction in the observation group were higher than those in the control group ( P<0.05). There was no significant difference in the incidence of adverse reactions between the two groups ( P>0.05) . Conclusion:Radical resection of pelvic autonomic nerve preserving cervical cancer can improve urodynamic indexes and sexual function of patients with cervical cancer, and has the same efficacy as conventional laparoscopic radical resection of cervical cancer without increasing adverse reactions, and has a good effect and safety.

Objective:To study the surface characterization and bonding strength of zirconia ceramic following nonthermal argon plasma(NTAP)treatment for different times.Methods:Zirconia ceramics were cut into 2 sizes of specimens(Ⅰ:10 mm×10 mm ×2 mm,Ⅱ:3 mm3 mm×2 mm),which were respectively subdivided into 5 groups:blank control group(A),sandblasting group(B)and NTAP treatment for 60,90 and 120 s groups(C,D and E respectively).The changes in surface morphology,roughness,C and O elements and contact angle of the sample surfaces were tested with Type Ⅰ specimens.Type Ⅱ specimens were applied to the uniform surface treatments and were cemented to isolated teeth using the RelyX U200 cement,the samples were submitted to a shear bond strength(SBS)test.Results:SEM and AFM show that NTAP treatment does not alter the surface morphology and roughness of zirconia ceramics.C element decreased and O element increased,and the contact angle became smaller after NTAP treatment.Among the 5 groups,group D showed the most extensive changes.And the result of SBS was as follows of NTAP treat-ment time:0 s＜60 s＜90 s=120 s(among 0,60 and 90 s groups,P＜0.05).Conclusion:NTAP treatment can improve the bond strength of zirconia ceramic by increasing its surface energy and wettability,and NTAP treatment for 90 s may be a suitable surface treatment method for zirconia ceramics.

Objective By exploring the establishment of a follow-up and pre-visit model,this study aims to facilitate the development of a modernized Chinese medical service model for public hospitals,characterized by optimized workflows,continu-ous care models,efficient services,comfortable environments,and patient-centered attitudes,thereby improving patient experi-ence and enhancing the quality of outpatient follow-up visits.Methods Under the value co-creation framework,with both healthcare providers and patients as core value stakeholders,this program introduced a self-service examination appointment plat-form,established a follow-up and pre-visit process,and implemented time-slot-based appointments for diagnosis and treatment.These steps aim to promote the equitable allocation of medical resources and refine the follow-up and pre-visit model in public hospitals.Results Implementation at Hospital P demonstrated that after process reengineering,patients'average in-hospital time reduced by nearly 135 minutes,significantly enhancing treatment efficiency,satisfaction levels among both medical staff and patients,and accessibility of medical services.Conclusion Grounded in value co-creation theory,the follow-up and pre-visit model of Hospital P is divided into three stages:mutual value positioning of both doctors and patients,collaborative value crea-tion,and sustained value continuation for both.This alignment between process reengineering goals and value co-creation out-comes helps improve the quality of medical services,better meet the medical needs of patients,and achieve a win-win scenario for both doctors and patients.

Objective:In view of the incomplete evaluation system of actual combat injury treatment ability of grassroots officers and soldiers at present, this paper aims to construct a multi-dimensional evaluation system for combat injury treatment to provide theoretical guidance and evaluation means for warfighting-oriented training on combat injury treatment.Methods:Through literature review, expert consultation, and hierarchical analysis, we determined the factors to evaluate the comprehensive ability of field first aid for combat injuries of grassroots officers and soldiers from the perspective of actual combat, and then established a system for evaluating the actual combat injury treatment ability of grassroots officers and soldiers, in which the weights of factors in each dimension were determined.Results:An evaluation system of actual combat injury treatment ability of grassroots officers and soldiers was formed, which included 4 first-level indices and 16 second-level indices in tactics, strategies, treatment, and protection dimensions.Conclusions:The established evaluation system can provide a reference for actual combat injury treatment training at the grassroots level.

Objective:To explore the effects of radical resection of pelvic autonomic nerve sparing cervical cancer on urodynamics, sexual function and prognosis of patients with cervical cancer.Methods:A total of 76 patients with cervical cancer admitted to Dingzhou People’s Hospital from Jan. 2021 to Jan. 2023 were selected as research objects, and all patients were divided into control group and study group by random number table method, with 38 cases in each group. The control group was treated with traditional laparoscopic radical cervicectomy, and the study group was treated with laparoscopic radical cervicectomy preserving pelvic autonomic nerve. Perioperative indexes, preoperative and postoperative urodynamics, tumor markers, sexual function and postoperative adverse reactions were compared between the two groups.Results:The operation time of the observation group was longer than that of the control group ( P<0.05). The exhaust time and defecation time of the observation group were lower in the observation group than in the control group ( P<0.05). There was no significant difference in the amount of blood loss or lymph node dissection between the two groups ( P>0.05). There was no significant difference in urodynamic indexes between the two groups before surgery ( P>0.05). In the observation group after surgery, the bladder compliance, maximum urine flow rate and maximum detrusor systolic blood pressure were (81.55±13.18 mL/cm H 20, 20.46±4.65 L/s, 35.09±7.41 cm H 20), while they were (60.14±10.27) mL/cm H 20, (14.48±3.92) L/s, (28.15±6.94) cm H 20 in the control group. The observation group were higher than the control group ( P<0.05). There was no significant difference in maximum bladder volume between the two groups ( P>0.05). There was no significant difference in sexual function scores between the two groups before surgery ( P>0.05). The scores of sexual desire, vaginal wetness and pain, sexual arousal and orgasm, and sexual satisfaction in the observation group were higher than those in the control group ( P<0.05). There was no significant difference in the incidence of adverse reactions between the two groups ( P>0.05) . Conclusion:Radical resection of pelvic autonomic nerve preserving cervical cancer can improve urodynamic indexes and sexual function of patients with cervical cancer, and has the same efficacy as conventional laparoscopic radical resection of cervical cancer without increasing adverse reactions, and has a good effect and safety.

Objective:To identify independent risk factors for early recurrence following curative resection of resectable pancreatic cancer and establish a nomogram prediction model.Methods:Clinical data from 405 patients with resectable pancreatic cancer treated at Renji Hospital, Shanghai Jiao Tong University School of Medicine from February 2010 to December 2020 were retrospectively reviewed. Patients were stratified into a training cohort (265 patients form February 2010 to December 2018) and a validation cohort (140 patients from January 2019 to December 2020) based on surgery dates. Optimal cutoff values for clinical variables were determined using X-tile software. Independent risk factors were identified through univariate and multivariate Cox proportional hazards regression analyses. Kaplan-Meier curves for recurrence-free survival (RFS) were generated across subgroups, and a nomogram was developed to predict early recurrence (within 1 year post-surgery). Time-dependent receiver operating characteristic (tROC) curves was drawn and area under the curve (AUC) metrics were utilized to evaluate predictive accuracy, while model reliability was assessed by calibration curves. Individualized risk scores derived from the nomogram were stratified into high- and low-risk groups using X-tile-derived cutoff values. Survival differences between groups were analyzed via log-rank tests. The clinical application value was judged by decision curve analysis (DCA) compared to TNM staging. Results:In the training cohort, 139 patients (52.45%) experienced early recurrence, with a median RFS of 11.1 months [interquartile range ( IQR): 6.0-26.0]. The validation cohort reported 70 early recurrences (50.00%) and a median RFS of 11.8 months ( IQR: 4.9-21.4). Univariate analysis revealed significant associations between early recurrence and tumor diameter, carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), carbohydrate antigen 125 (CA125), systemic immune-inflammation index (SⅡ), and prognostic nutritional index (PNI). Multivariate analysis identified tumor diameter ≥3.75 cm ( HR=1.718, 95% CI 1.223-2.412, P=0.002), CA19-9≥218 U/ml ( HR=1.567, 95% CI 1.107-2.220, P=0.011), CA125≥20.98 U/ml ( HR=2.501, 95% CI 1.768-3.539, P<0.001), SⅡ≥388.28 ( HR=1.708, 95% CI 1.096-2.662, P=0.018), and PNI<53.18 ( HR=0.596, 95% CI 0.404-0.879, P=0.009) as independent risk factors for early recurrence. The nomogram achieved AUC values of 0.771 and 0.708 in the training and validation cohorts, respectively. Calibration curves demonstrated strong agreement between predicted and observed survival probabilities. Kaplan-Meier analysis revealed significantly lower 1-year RFS rates in high-risk versus low-risk groups for both cohorts (training: HR=3.65, 95% CI 2.45-5.44, P<0.001; validation: HR=2.37, 95% CI 1.39-4.06, P=0.001). DCA indicated superior net benefit of the nomogram over TNM staging across threshold probabilities of 0.2-0.9. Conclusions:The proposed nomogram effectively integrates clinical and serological biomarkers to preoperatively assess early recurrence risk in resectable pancreatic cancer patients, offering enhanced precision for clinical decision-making.

Objective:To investigate the effect of astragalus polysaccharide(APS)on macrophage phagocytosis of P.aerugino-sa and its related mechanism.Methods:The effect of APS on the activity of macrophages was detected by CCK-8 assay.The effect of APS on macrophage phagocytosis related signal pathways were detected by Western blot.Gentamicin protection test and flow cytometry were employed to evaluate the effect of APS on macrophage phagocytosis of P.aeruginosa.Then the macrophages were pretreated with the inhibitors of TLR4,NF-κB,STAT3,MAPK and PI3K to assess the mechanism mediating APS on macrophage phagocytosis.Results:APS promotes the activity of macrophages,and significantly promoted the phagocytosis of P.aeruginosa by macrophages.Fur-thermore,macrophage phagocytosis of P.aeruginosa was significantly inhibited by TLR4 inhibitors(TAK242)and PI3K inhibitors(LY294002),but not affected by NF-κB,STAT3 and MAPK inhibitors.Conclusion:APS has no toxicity on macrophages,and can promote the phagocytosis of macrophages to P.aeruginosa,the underlying mechanism may be related to TLR4/PI3K pathway.