Objective:To compare the efficacy of Ilizarov ring external fixation and unilateral rail external fixation in the treatment of infected bone defects following surgery for tibial fractures.Methods:A retrospective cohort study was conducted to analyze the clinical data of 50 patients with infected bone defects after surgery for tibial fractures, who were admitted to the 940th Hospital of the Joint Logistics Support Force of the PLA from August 2019 to November 2021, including 37 males and 13 females, aged 19-59 years [(42.2±8.8)years]. After debridement and osteotomy, 28 patients were treated with Ilizarov ring external fixation (Ilizarov group) and 22 with unilateral rail external fixation (unilateral fixation group). All the patients in the two groups had previously undergone internal fixation with plates or Kirschner wires for tibial fracture before bone transport. Bone transport started at one week for three stages after successful infection control and osteotomy and was conducted. The following parameters were compared between the two groups: frame-wearing time and healing index after bone transport, self-rating anxiety scale (SAS) grade at 6 months after bone transport, Paley score and Association for the Study and Application of the Method of Ilizarov (ASAMI) score at the last follow-up, Hospital for Special Surgery (HSS) knee score and Baird-Jackson ankle score on admission, after external fixator removal and at the last follow-up, and incidence of postoperative complications.Results:All the patients were followed up for 28-36 months [(32.5±1.6)months]. There were no significant differences in frame-wearing time or healing index between the two groups after bone transport ( P>0.05). At 6 months after bone transport, the SAS grade in the unilateral fixation group (13 patients with mild anxiety, 8 with moderate anxiety, and 1 with severe anxiety) was better than that in the Ilizarov group (6 patients with mild anxiety, 19 with moderate anxiety, 3 with severe anxiety) ( P<0.01). No significant differences were found in the Paley score or ASAMI score between the two groups at the last follow-up ( P>0.05). There were no significant differences in HSS knee score or Baird-Jackson ankle score between the two groups on admission, after external fixator removal or at the last follow-up ( P>0.05). No significant differences were observed in the incidence of pin tract infection, poor healing, infection in the bone elongation area, or re-fracture between the two groups ( P>0.05). The incidence of postoperative axial deviation was 0 in the Ilizarov group, lower than 18% in the unilateral fixation group (4/22) ( P<0.05). Conclusion:Although Ilizarov ring external fixation and unilateral rail external fixation demonstrate comparable efficacy in the treatment of infected bone defects after surgery for tibial fractures, the former provides superior mechanical stability and postoperative axial deviation correction, while the latter offers advantages in reducing psychological burden and enhancing treatment tolerance.

Objective:To compare the efficacy of Ilizarov ring external fixation and unilateral rail external fixation in the treatment of infected bone defects following surgery for tibial fractures.Methods:A retrospective cohort study was conducted to analyze the clinical data of 50 patients with infected bone defects after surgery for tibial fractures, who were admitted to the 940th Hospital of the Joint Logistics Support Force of the PLA from August 2019 to November 2021, including 37 males and 13 females, aged 19-59 years [(42.2±8.8)years]. After debridement and osteotomy, 28 patients were treated with Ilizarov ring external fixation (Ilizarov group) and 22 with unilateral rail external fixation (unilateral fixation group). All the patients in the two groups had previously undergone internal fixation with plates or Kirschner wires for tibial fracture before bone transport. Bone transport started at one week for three stages after successful infection control and osteotomy and was conducted. The following parameters were compared between the two groups: frame-wearing time and healing index after bone transport, self-rating anxiety scale (SAS) grade at 6 months after bone transport, Paley score and Association for the Study and Application of the Method of Ilizarov (ASAMI) score at the last follow-up, Hospital for Special Surgery (HSS) knee score and Baird-Jackson ankle score on admission, after external fixator removal and at the last follow-up, and incidence of postoperative complications.Results:All the patients were followed up for 28-36 months [(32.5±1.6)months]. There were no significant differences in frame-wearing time or healing index between the two groups after bone transport ( P>0.05). At 6 months after bone transport, the SAS grade in the unilateral fixation group (13 patients with mild anxiety, 8 with moderate anxiety, and 1 with severe anxiety) was better than that in the Ilizarov group (6 patients with mild anxiety, 19 with moderate anxiety, 3 with severe anxiety) ( P<0.01). No significant differences were found in the Paley score or ASAMI score between the two groups at the last follow-up ( P>0.05). There were no significant differences in HSS knee score or Baird-Jackson ankle score between the two groups on admission, after external fixator removal or at the last follow-up ( P>0.05). No significant differences were observed in the incidence of pin tract infection, poor healing, infection in the bone elongation area, or re-fracture between the two groups ( P>0.05). The incidence of postoperative axial deviation was 0 in the Ilizarov group, lower than 18% in the unilateral fixation group (4/22) ( P<0.05). Conclusion:Although Ilizarov ring external fixation and unilateral rail external fixation demonstrate comparable efficacy in the treatment of infected bone defects after surgery for tibial fractures, the former provides superior mechanical stability and postoperative axial deviation correction, while the latter offers advantages in reducing psychological burden and enhancing treatment tolerance.

With the widespread adoption of low-dose CT screening and the extensive application of high-resolution CT, the detection rate of sub-centimeter lung nodules has significantly increased. How to scientifically manage these nodules while avoiding overtreatment and diagnostic delays has become an important clinical issue. Among them, lung nodules with a consolidation tumor ratio less than 0.25, dominated by ground-glass shadows, are particularly worthy of attention. The therapeutic challenge for this group is how to achieve precise and complete resection of nodules during surgery while maximizing the preservation of the patient's lung function. The "watershed topography map" is a new technology based on big data and artificial intelligence algorithms. This method uses Dicom data from conventional dose CT scans, combined with microscopic (22-24 levels) capillary network anatomical watershed features, to generate high-precision simulated natural segmentation planes of lung sub-segments through specific textures and forms. This technology forms fluorescent watershed boundaries on the lung surface, which highly fit the actual lung anatomical structure. By analyzing the adjacent relationship between the nodule and the watershed boundary, real-time, visually accurate positioning of the nodule can be achieved. This innovative technology provides a new solution for the intraoperative positioning and resection of lung nodules. This consensus was led by four major domestic societies, jointly with expert teams in related fields, oriented to clinical practical needs, referring to domestic and foreign guidelines and consensus, and finally formed after multiple rounds of consultation, discussion, and voting. The main content covers the theoretical basis of the "watershed topography map" technology, indications, operation procedures, surgical planning details, and postoperative evaluation standards, aiming to provide scientific guidance and exploration directions for clinical peers who are currently or plan to carry out lung nodule resection using the fluorescent microscope watershed analysis method.

Detailed characterizations of genomic alterations have not identified subtype-specific vulnerabilities in adult gliomas. Mapping gliomas into developmental programs may uncover new vulnerabilities that are not strictly related to genomic alterations. After identifying conserved gene modules co-expressed with EGFR or PDGFRA (EM or PM), we recently proposed an EM/PM classification scheme for adult gliomas in a histological subtype- and grade-independent manner. By using cohorts of bulk samples, paired primary and recurrent samples, multi-region samples from the same glioma, single-cell RNA-seq samples, and clinical samples, we here demonstrate the temporal and spatial stability of the EM and PM subtypes. The EM and PM subtypes, which progress in a subtype-specific mode, are robustly maintained in paired longitudinal samples. Elevated activities of cell proliferation, genomic instability and microenvironment, rather than subtype switching, mark recurrent gliomas. Within individual gliomas, the EM/PM subtype was preserved across regions and single cells. Malignant cells in the EM and PM gliomas were correlated to neural stem cell and oligodendrocyte progenitor cell compartment, respectively. Thus, while genetic makeup may change during progression and/or within different tumor areas, adult gliomas evolve within a neurodevelopmental framework of the EM and PM molecular subtypes. The dysregulated developmental pathways embedded in these molecular subtypes may contain subtype-specific vulnerabilities.
Humans ; Brain Neoplasms/pathology* ; Neoplasm Recurrence, Local/metabolism* ; Glioma/pathology* ; Neural Stem Cells/pathology* ; Oligodendrocyte Precursor Cells/pathology* ; Tumor Microenvironment

Objective:To explore the current status of surgery for portal hypertension to grasp current status and future development of surgery in China.Methods:This study is jointly sponsored by China Hepatobiliary & Pancreatic Specialist Alliance & Portal Hypertension Alliance in China (CHESS).Comprehensive surveying is conducted for basic domestic situations of surgery for portal hypertension, including case load, surgical approaches, management of postoperative complications, primary effects, existing confusion and obstacles, liver transplantation(LT), laparoscopic procedures and transjugular intrahepatic portosystemic shunt(TIPS), etc.Results:A total of 8 512 cases of portal hypertension surgery are performed at 378 hospitals nationwide in 2021.Splenectomy plus devascularization predominated(53.0%)and laparoscopy accounted for 76.1%.Primary goal is preventing rebleeding(67.0%) and 72.8% of hospitals used preventive anticoagulants after conventional surgery.And 80.7% of teams believe that the formation of postoperative portal vein thrombosis is a surgical dilemma and 65.3% of hospitals practiced both laparoscopy and TIPS.The major reasons for patients with portal hypertension not receiving LT are due to a lack of qualifications for LT(69.3%)and economic factors(69.0%).Conclusions:Surgery is an integral part of management of portal hypertension in China.However, it is imperative to further standardize the grasp of surgical indications, the handling of surgical operation and the management of postoperative complications.Moreover, prospective, multi-center randomized controlled clinical studies should be performed.

[摘 要] 目的：探讨β-1,6 N-乙酰氨基葡萄糖转移酶2（GCNT2）基因在胃癌（GC）组织中的表达及其在GC发生、发展和诊断及预后中的作用。方法：利用TIMER、GEPIA2、Oncomine和UALCAN等数据库数据，以及2018年1月至2019年12月滨州医学院附属医院手术切除的25例GC患者的癌和配对癌旁组织标本，分析GCNT2基因在GC组织中的表达及其在GC诊断和预后中的价值，利用LinkedOmics、GSEA和ssGSEA分析GCNT2所涉及的主要信号通路及其与免疫浸润之间的相关性。将pc-GCNT2及其阴性对照质粒转染进胃癌SGC-7901和BGC-823细胞，用克隆形成实验和Transwell实验检测GCNT2对GC细胞增殖和侵袭的影响，WB法检测细胞中GCNT2、STAT3和PD-L1蛋白的表达水平。结果：GCNT2 mRNA在GC组织中的表达水平显著低于癌旁组织（P<0.05或P<0.01），其表达水平与患者预后显著相关（P<0.05），其对GC诊断有较高的价值。GCNT2在GC组织中的甲基化状态显著高于癌旁组织，GCNT2基因参与的生物过程主要是参与细胞形态发生的成分、细胞间黏附、多细胞生物信号和突触传递等。单基因GSEA分析发现，GCNT2在GC中主要抑制IL-6/JAK/STAT3、IL-2/STAT5信号通路和炎症反应、α/γ干扰素响应与NF-κB表达等。GCNT2的表达与GC组织的免疫浸润具有显著相关性。过表达GCNT2可显著抑制GC细胞的增殖和侵袭能力（均P<0.01），降低细胞中STAT3和PD-L1的表达水平（均P<0.01）。结论：GCNT2基因在GC组织中低表达，与GC的诊断及预后显著相关，其主要通过抑制IL-6/JAK/STAT3和免疫相关致癌信号通路而在GC的发生、发展中发挥重要的作用。

Early detection and intervention are key strategies to reduce mortality, increase long-term survival, and improve the therapeutic effects of hepatocellular carcinoma (HCC) patients. Herein, the isobaric tag for relative and absolute quantitation (iTRAQ)-based quantitative pro-teomic strategy was used to study the secretomes in conditioned media from HCC cancerous tissues, surrounding noncancerous tissues, and distal noncancerous tissues to identify diagnostic and prog-nostic biomarkers for HCC. In total, 22 and 49 dysregulated secretory proteins were identified in the cancerous and surrounding noncancerous tissues, respectively, compared with the distal non-cancerous tissues. Among these proteins, carbonic anhydrase Ⅱ (CA2) was identified to be signifi-cantly upregulated in the secretome of cancerous tissues; correspondingly, the serum concentrations of CA2 were remarkably increased in HCC patients compared with that in normal populations. Interestingly, a significant increase of serum CA2 in recurrent HCC patients after rad-ical resection was also confirmed compared with HCC patients without recurrence, and the serum level of CA2 could act as an independent prognostic factor for time to recurrence and overall sur-vival. Regarding the mechanism, the secreted CA2 enhances the migration and invasion of HCC cells by activating the epithelial mesenchymal transition pathway. Taken together, this study identi-fied a novel biomarker for HCC diagnosis and prognosis, and provided a valuable resource of HCC secretome for investigating serological biomarkers.

Objective:To explore the clinical characteristics, diagnostic methods, treatment strategies, and curative efficacies of epilepsy secondary to cerebral sparganosis.Methods:A retrospective analysis on clinical data of 62 patients with epilepsy caused by cerebral sparganosis diagnosed in our hospital from July 2004 to May 2019 was performed. According to the treatment intention of the patients, these patients were divided into surgery group ( n=39) and drug deworming group ( n=23). Patients in the surgery group were treated with craniotomy assisted by navigation to remove worms and lesions, and patients without live worms were treated with lesion resection or cortical burning. Patients in the drug deworming group were treated with praziquantel at a dose of 60 mg/(kg·d) with 10 d as a course of treatment; the next course of treatment was followed at an interval of 2 months, and ended until the standard of cure was achieved. All patients were followed up for 1-8 years, and the prognoses were determined according to the imaging data, clinical symptom improvement and sparganosis antibody IgG detection results. The epilepsy control 1 year after treatment was assessed by modified Engel grading. Results:Live worms were removed from 34 patients of the surgery group, with a total of 35 worms; after 1-8 years of follow-up, 34 patients were cured and 5 patients were not cured in the surgery group; however, 7 patients were cured and 16 patients were not cured in the drug deworming group; the cure rate in the surgery group was signficantly higher than that in the drug deworming group ( P=0.000). Modified Engel grading I was achieved in 36 patients, grading II in 2 patients, grading III in 0, and IV in 1 patient of the surgery group; modified Engel grading I was achieved in 9 patients, grading II in 3, grading III in 5, and grading IV in 6 patients of the drug deworming group; significant differences were noted between the two groups ( Z=203.000, P=0.000); the mean rank suggested that the surgery group had better efficacy than the drug deworming group(25.21 vs. 42.17). Conclusion:The successful surgical removal of live worms with the help of modern neurosurgery technology has better efficacy than drug deworming treatment in the epilepsy secondary to cerebral sparganosis.

Objective:To investigate and analyze the current situation, screening, clinical characteristics, prevention and treatment of bleeding esophageal varices in cirrhotic patients with portal hypertension in Tibet region.Methods:Clinical data of cirrhotic patients with portal hypertension through March 2017 to February 2020 from Tibet region were collected and analyzed retrospectively.Results:511 cases with liver cirrhosis were included in the study, of which 185 cases (36.20%) had compensated cirrhosis and 326 cases (63.80%) had decompensated cirrhosis. Further analysis of the etiological data of liver cirrhosis showed that 306 cases (59.88%) were of chronic hepatitis B, 113 cases (22.11%) of alcoholic liver disease, and 68 cases (13.31%) of chronic hepatitis B combined with alcoholic liver disease. Among patients with compensated liver cirrhosis, 48 cases (25.95%) underwent endoscopic examination of which 33 diagnosed as high-risk variceal bleeding. However, none of these 33 cases had received non-selective β-blocker therapy, and only four patients had received endoscopic variceal banding therapy. Among patients with decompensated liver cirrhosis, 83 cases (25.46%) had a history of upper gastrointestinal bleeding, 297 cases (91.10%) had ascites, 23 cases (7.05%) had hepatic encephalopathy, and 3 cases (0.92%) had hepatorenal syndrome. Among the patients with a history of upper gastrointestinal bleeding, 42 cases (50.60%) had received secondary preventive treatment for bleeding esophageal varices, including 39 cases of endoscopic treatment, 1 case of endoscopic combined drug treatment, 3 cases of interventional treatment, and 2 cases of surgical treatment.Conclusion:Chronic hepatitis B and alcoholic liver diseases are the main causes of liver cirrhosis in Tibet region. Moreover, this region lacks screening, prevention and treatment for bleeding esophageal varices in cirrhotic patients with portal hypertension. Therefore, it is necessary to increase the screening of high-risk groups to prevent and improve the first-time bleeding, and promote multidisciplinary team to prevent and treat re-bleeding.

Objective:To investigate the effect of wild Cistanche deserticola crude polysaccharides (WCDCP) on the immune response of ovalbumin (OVA).Methods:42 ICR mice were randomly divided into the 9 g/L NaCl group (blank sample), WCDCP group (400 μg WCDCP), OVA group (10 μg OVA), low-dose WCDCP/OVA group (100 μg WCDCP+10 μg OVA), medium-dose WCDCP/OVA group (400 μg WCDCP+10 μg OVA), high-dose WCDCP/OVA group (800 μg WCDCP+10 μg OVA), and aluminum adjuvant/OVA group (positive concentration, 200 μg aluminum adjuvant+10 μg OVA). Each group included 6 mice. The mice were immunized by using two-point injection into the muscles of the hind legs of the mice. A total of 2 immunizations, and the immunization was boosted once every 2 weeks after the initial immunization. The body weight of the mice was weighed 7, 14, 21, and 28 days after the initial immunization of the mice, and the changes in body weight and growth status of the mice were observed. The IgG antibodies and antibody fractions were detected by indirect enzyme-linked immunosorbent assay. Twenty-one days after the initial immunization, the spleen lymphocyte proliferation level was detected by the thiazole blue method. Flow cytometry was used to detect the proportion of T cell subsets in the spleen and lymph nodes.Results:At 7 days after the initial immunization, the serum IgG antibody level (0.597 6±0.110 7) in the high-dose WCDCP/OVA group was significantly higher than (0.254 4±0.074 8) of the OVA group ( P<0.05). At 28 days after the initial immunization, the serum IgG, IgG1 and IgG2a antibody levels in the high-dose WCDCP/OVA group were higher than those in the OVA group, the comparison respectively were 0.972 3±0.243 8 vs. 0.389 2±0.077 4 ( P<0.05), 1.156 0±0.088 4 vs. 0.612 6±0.059 7 ( P<0.001), 1.648 0±0.103 9 vs. 0.557 2±0.181 5 ( P<0.001), and the differences were statistically significant. High-dose WCDCP can significantly promote the proliferation of spleen cells induced by concanavalin A ( P<0.001) and lipopolysaccharide ( P<0.05). High-dose WCDCP/OVA group can significantly stimulate the activation ratio of T cell subsets in the spleen. The proportion of CD3 +CD8 + T cells in the high-dose WCDCP/OVA group [(10.83±0.44)%] was significantly higher than that in the OVA group[(6.76±0.58)%] ( P<0.01), and the proportion of CD3 +CD4 + T cells [(28.17±1.67)%] was also significantly higher than that in the OVA group [(19.17±2.73)%] ( P<0.05). WCDCP had no effect on body weight (all P>0.05) and growth of mice. Conclusions:WCDCP can enhance humoral immune response and cellular immune response, and has no side effect on the growth of mice, suggesting that WCDCP can be used as a potential adjuvant for OVA.