BACKGROUND:Diabetic foot patients with wound infections constitute a large patient population,and there is currently no satisfactory treatment approach. OBJECTIVE:To investigate the clinical efficacy of a modified tibial cortex transverse transport combined with antibiotic-loaded bone cement for treating refractory diabetic foot ulcers. METHODS:A total of 46 diabetic foot ulcers patients,27 males and 19 females,with an average age of 64.37 years,were selected from Beijing Chaoyang Hospital,Capital Medical University and Beijing Chaoyang Integrative Medicine Rescue and First Aid Hospital from January 2020 to January 2023.All of them underwent the modified tibial cortex transverse transport combined with antibiotic-loaded bone cement treatment.Ankle-brachial index,WIFi(Wound/Ischemia/Foot infection)classification,pain visual analog scale score,and ulcer area were recorded before and 3 months after surgery. RESULTS AND CONCLUSION:(1)The mean ulcer healing time for the 46 patients was(58.07±24.82)days.At 3 months postoperatively,there were significant improvements in ankle-brachial index,pain visual analog scale score,ulcer area,and WIFi classification in 46 patients,as compared to the preoperative values,with statistically significant differences(P<0.05).Two patients experienced pin-tract infections,without infection or ulcer recurrence during the follow-up period.(2)These findings indicate that the modified tibial cortex transverse transport combined with antibiotic-loaded bone cement effectively alleviates patients'pain,improves lower limb circulation,controls infections,and promotes ulcer healing.

Objective To evaluate the long-term efficacy of transjugular intrahepatic portosystemic shunt(TIPS)with bare stents and Fluency covered stents in the treatment of portal hypertension,and to discuss its clinical value.Methods The clinical data of 29 patients with intractable ascites or esophagogastric fundus varices rupture and hemorrhage caused by cirrhotic portal hypertension,who received TIPS with bare stents and covered stents at the First Affiliated Hospital of Xinjiang Medical University of China(25 patients)and the Lishui Municipal Central Hospital of China(4 patients)between August 2012 and December 2017,were retrospectively analyzed.The patients were regularly followed up to check the survival status.The postoperative cumulative shunt patency rate and cumulative survival rate of the patients were analyzed by Kaplan-Meier method.Results The technical success rate of TIPS was 100％.The mean portal vein pressure was decreased from preoperative(40.21±3.24)cmH2O to postoperative(24.55±3.55)cmH2O(P＜0.05).The patients were followed up for 5.1-10.5 years.The postoperative 1-,3-,5-,7-year primary cumulative patency rates of the shunt were 89.7％,75.9％,75.9％ and 52.5％,respectively.The postoperative 5-,7-,9-and 10-year cumulative survival rates were 100％,66.9％,66.9％ and 33.4％,respectively.The incidence of hepatic encephalopathy was 13.8％(4/29).Conclusion Using bare stents combined with Fluency covered stents for TIPS is clinically safe and effective in the treatment of portal hypertension.This technique carries higher long-term shunt patency rate and low incidence of hepatic encephalopathy.Therefore,it can be used as a substitute for Viatorr stent when necessary.(J Intervent Radiol,2024,33:295-299)

Objective To assess the effectiveness of enhanced tibial transverse transport(TTT)in con-junction with vacuum-assisted closure(VAC)therapy for managing recalcitrant diabetic foot ulcers.Methods A retrospective analysis was conducted on data from diabetic foot patients with Wagner grade≥2 who were treated at Beijing Chaoyang Hospital and Beijing Chaoyang Hospital of Integrated Traditional Chinese and Western Medicine between July 2020 and December 2022.The patients were categorized into three groups based on their treatment regimen:VSD treatment(VSD group),modified TTT treatment(TTT group),and combined application of TTT and VSD(combined group).A one-year follow-up was performed to assess general data,ulcer area before and three months after surgery,ankle brachial index,visual analog pain score,as well as adverse events within one year post-surgery among the three groups.Results The VSD group consisted of 43 patients,while the TTT group consisted of 43 patients,and the combined group consisted of 42 patients.There were no statistically significant differences in baseline characteristics among the three groups(P＞0.05).Patients in the VSD group had longer ulcer healing time,higher pain scores,lower ankle brachial index(P＜0.05),larger ulcer area(P=0.029),and higher one-year ulcer recurrence rate compared to those in the TTT group.On the other hand,patients in the combined group had shorter ulcer healing time compared to those in the TTT group(P=0.046).However,there were no significant differences observed between these two groups regarding ulcer area(P=0.362),pain scores(P=0.932),ankle brachial index(P=0.671),and one-year ulcer recurrence rate(P=0.710).Conclusions The efficacy of modified TTT surpasses that of VSD in promoting ulcer healing,alleviating pain,and enhancing lower limb circulation.Furthermore,the combination of VSD with modified TTT demonstrates a potential to further expedite wound healing time.

Objective To explore the correlation between the rs290487 and rs7903146 single-nucleotide polymorphism(SNP)of TCF7L2 gene and the occurrence of diabetic kidney disease(DKD)in type 2 diabetes mellitus(T2DM)population in Hebei region.Methods Epidemiological and clinical data as well as SNP data at TCF7L2 rs290487 and rs7903146 sites were collected from 317 non DKD patients and 302 DKD patients.The correlation between SNP at rs290487 and rs7903146 sites and DKD was analyzed through a case-control design.Results The genotype frequency distribution at the rs290487 and rs7903146 loci of the two TCF7L2 genes conforms to the Hardy-Weinberg genetic balance(P>0.05),and the allele frequency distribution conforms to the Hardy-Weinberg genetic balance(P>0.05).Single factor logistic regression analysis of genetic models for different genotypes at rs290487 locus showed that the risk of DKD in TC+CC genotype carriers was 2.772 times that of TT genotype carriers in the dominant model.Multivariate logistic regression analysis of genetic models for different genotypes at rs290487 locus showed that the risk of DKD in TC+CC genotype carriers was 2.837 times that of TT genotype carriers.Conclusions TC and CC genotypes at rs290487 sites of TCF7L2 gene are risk factors for DKD,and gene mutation at rs290487 sites may be associated with DKD in T2DM population in Hebei.

Objective To investigate the inhibitory effect of anlotinib combined with anti-PD1 antibody on a colon cancer mouse model,and to explore its possible mechanismfor remodeling the immune system and tumor microenvironment.Methods A BALB/c mouse model was established with colon cancer cells CT26,and the mice were divided randomly into four groups:the control group,the anlotinib group,anti-PD1 antibody group and anlotinib combined with anti-PD1 antibody group,with 6 mice in each.During the experiment,tumor volumes were measured every 2 days using a vernier caliper.After the experiment(on day 14),the weight of the tumors of mice in each group was measured.Flow cytometry was used to detect changes in the number of immune infiltrating cells in tumor tissues,including CD4+T cells,CD8+T cells,monocytic myeloid-derived suppressor cells(M-MDSCs),granulocytic myeloid-derived suppressor cells(G-MDSCs),and M2-type tumor-associated macrophages(M2-TAM).Furthermore,ELISA was employed to detect the levels of vascular endothelial growth factor(VEGF),interferon-γ(IFN-γ),interleukin-17(IL-17),and IL-10 in the serum of mice.Results Compared with the control group,the other three groups showed a decrease in the volume and weight of transplanted tumors in mice(P＜0.05),as well as decreased levels of cytokines VEGF,IL-10(P＜0.05),and IL-17(P＜0.01).Additionally,there was an increase in the level of IFN-γ(P＜0.05).In terms of the number of immune infiltrating cells,the number of M-MDSCs decreased in each treatment group compared to the control group,but without statistically significant difference(P＞0.05).In the combined group,the number of M2-type TAMs decreased compared to the control group and the anti-PD-1 antibody group(P＜0.05).Furthermore,flow cytometry results indicated that compared to the control group,the other three groups showed an increase in the number of CD8+T cells in mice(P＜0.05).The number of CD4+T cells decreased slightly compared to the other groups,but the statistically significant difference was only observed when compared to the anlotinib group(P＜0.05).Conclusion The combination ofanlotinib and anti-PD1 antibody may regulate the levels of cytokines VEGF,IFN-γ,IL-10,and IL-17,thereby influencing the number of immunosuppressive cells in the tumor microenvironment.The tumor microenvironment and immunity can also be improved,thus significantly inhibiting the growth ofmouse colonic transplant tumors.

Objective:To investigate the application of (4R)-4-(3-[ 18F]fluoranyl-5-fluorophenyl)-1-((3-methylpyridin-4-yl)methyl)pyrrolidin-2-one( 18F-SynVesT-1), a synaptic vesicle glycoprotein 2A (SV2A) radioactive tracer, in patients with Alzheimer′s disease (AD). Methods:A total of 20 AD patients (2 males, 18 females, age (66.4±8.1) years) with positive β-amyloid (Aβ) deposition and 20 normal controls (NC; 9 males, 11 females, age (62.6±8.6) years ) without Aβ deposition were retrospectively recruited from Huashan Hospital, Fudan University between December 2021 and December 2022. All of them underwent 18F-SynVesT-1 PET/MR and 18F-Florbetapir (AV45) PET/CT scans. Preprocessing of brain 18F-SynVesT-1 PET images was carried out using statistical parametric mapping (SPM). The differences of the uptke of 18F-SynVesT-1 (synaptic density) between two groups based on ROI were compared by using either the independent-sample t test or Mann-Whitney U test. Spearman rank correlation analysis was performed to assess the relationship between synaptic density and cognitive performance. For voxelwise analysis, a general linear model was constructed to analyze differences in synaptic density between the two groups using the independent-sample t test. Furthermore, a multiple linear regression model was developed to explore the relationship between synaptic density and cognitive performance. Results:Compared to the NC group, the AD group exhibited significant widespread reduction in synaptic density across the cortical regions ( P<0.05, false discovery rate (FDR)-corrected), particularly in the medial temporal lobe (0.84±0.09 vs 1.04±0.09; t=-6.95, P<0.001), lateral temporal lobe (1.15±0.13 vs 1.31±0.08; t=-4.56, P<0.001), and lateral parietal lobe (1.24(1.04, 1.26) vs 1.32(1.23, 1.39); z=-3.25, P=0.001). Moreover, synaptic density in extensive cortical regions showed a positive correlation with mini-mental state examination (MMSE) and Montreal cognitive assessment-basic (MoCA-B) scores ( P<0.05, FDR-corrected). Notably, significant associations were observed between MMSE and MoCA-B scores and synaptic density in the lateral temporal lobe ( rs values: 0.71, 0.74, both P<0.001) and medial temporal lobe ( rs values: 0.71, 0.74, both P<0.001). Conclusions:18F-SynVesT-1 PET imaging is a valuable tool for evaluating synaptic density, specifically in the context of AD. The observed widespread reduction in synaptic density across cortical regions of patients with AD are closely related to cognitive decline.

Objective:To explore the possible role and clinical significance of vitamin D receptor (VDR) in intrahepatic bile duct epithelial cells (IBDECs) in biliary atresia (BA).Methods:A retrospective analysis was performed on expression level of VDR in IBDECs of 38 BA children who underwent Kasai surgery in the Second Affiliated Hospital of Xi′an Jiaotong University and the Children′s Hospital of Xi′an Jiaotong University from January 2015 to December 2019.Expression level of VDR in IBDECs of 38 children with BA was detected by immunohistochemical staining, and that in children with choledochal cysts was detected as negative control.Masson staining was performed to examine the degree of liver fibrosis.The correlation between the expression level of VDR in IBDECs of children with BA, and the degree of liver fibrosis during operation, the incidence of refractory cholangitis after Kasai portoenterostomy and the survival time of autologous liver was analyzed.Human intrahepatic bile duct epithelial cells (HiBECs) were induced with dsRNA virus infection by polyinosinic acid-polycytidylic acid [Poly(I∶C)] in vitro, followed by detection of cell activity, apoptosis and VDR level.The differences between 2 independent groups were analyzed using Student t test.The relationship between the expression of VDR and clinicopathologic characteristics was conducted with χ2 test or Fisher′ s test.The Kaplan- Meier survival curve was used to analyze the differences in the survival time of autologous liver after Kasai in BA children with different VDR expression levels. Results:A total of 38 children with BA were included in this study.Among them, 23 cases showed no significant decrease of VDR protein level in IBDECs, and 15 cases showed a significant decrease in IBDECs.Compared with BA children without a significant decrease in VDR level in IBDECs, much severer liver fibrosis ( P<0.001) and significantly higher incidence of refractory cholangitis after Kasai procedure ( P=0.017) were detected in those with a significant decrease in VDR level.Compared with the control group, BA children with significantly lower VDR expression levels in HiBECs had a shorter autologous liver survival time ( P=0.030). Poly (I∶C) increased the apoptotic rate of HiBECs ( P<0.000 1) and decreased cell activity of HiBECs ( P<0.05), which significantly stimulated the secretion of inflammatory factors (interferon, tumor necrosis factor-α, interleukin-6) in the culture medium of HiBECs ( P<0.001). Poly (I∶C) significantly decreased the expression level of VDR protein in HiBECs ( P<0.001). Conclusions:Poly (I∶C) causes HiBECs damage and decreases VDR expression level in HiBECs of BA children, and the significantly decreased VDR expression level in IBDECs may be a marker of poor prognosis of BA.

【Objective】 To analyze the viability of 2 different blood screening strategies against SARS-CoV-2 in low risk populations, so as to provide references for the formulation of blood screening strategy. 【Methods】 Two screening strategies for antibodies against SARS-CoV-2 were adopted: 1) the total antibody were initially screened for all samples, and the antibody IgG and IgM were retested in those primary positive samples; 2) only antibody test of IgG and IgM for all samples. And SARS-CoV-2 nucleic acid was detected in parallel. Reactive samples was confirmed by neutralization test. The sensitivity, specificity and true positive rate of two strategies were calculated. 【Results】 None was positive for SARS-CoV-2 nucleic acid among 880 samples. Four truly positive samples were implicated in 9 (1.02%, 9/880) initially reactive samples in total antibody test; 3 in 26 (2.95%, 26/880) initially IgG or IgM reactive samples. 【Conclusion】 The first strategy is superior to the second strategy in the sensitivity and specificity, and is recommended for the detection of SARS-CoV-2 antibody in low risk populations.

Enrichment of trace bioactive constituents and metabolites from complex biological samples is chal-lenging. This study presented a one-pot synthesis of magnetic polydopamine nanoparticles (Fe3O4@-SiO2@PDA NPs) with multiple recognition sites for the magnetic dispersive solid-phase extraction (MDSPE) of ginsenosides from rat plasma treated with white ginseng. The extracted ginsenosides were characterized by combining an ultra-high-performance liquid chromatography coupled to a high-resolution mass spectrometry with supplemental UNIFI libraries. Response surface methodology was statistically used to optimize the extraction procedure of the ginsenosides. The reusability of Fe3O4@-SiO2@PDA NPs was also examined and the results showed that the recovery rate exceeded 80％ after recycling 6 times. Furthermore, the proposed method showed greater enrichment efficiency and could rapidly determine and characterize 23 ginsenoside prototypes and metabolites from plasma. In com-parison, conventional methanol method can only detect 8 ginsenosides from the same plasma samples. The proposed approach can provide methodological reference for the trace determination and charac-terization of different bioactive ingredients and metabolites of traditional Chinese medicines and food.

Objective To explore the influence of goal-directed fluid therapy guided by stroke volume variation (SVV) on the recovery of gastrointestinal function and the length of hospital stay in patients undergoing gastrointestinal surgery, thus provide evidence for clinical application. Methods The studies related to the functional recovery of patients undergoing gastrointestinal surgery, including goal-directed fluid therapy guided by SVV were search in the PubMed, Medline, Google Scholar, Web of Science, CNKI, VIP and Wanfang data from 2008 to 2017. The experiment group was treated with goal-directed fluid therapy, and the control group was treated with open fluid therapy. The key indexes included first time of exhaust time, postoperative first defecation time, postoperative first feeding time, length of postoperative hospital stay or total length of hospital of stay. The Meta-analysis used RevMan 5.3 statistical software. Results A total of 13 randomized controlled trials containing 851 patients was included. The total length of hospitalization was compared in 8 articles, and the results showed that the difference was statistically significant ( MD = -4.12, 95% CI-5.93 to-2.30, P < 0.01). The length of postoperative hospital stay was compared in 6 articles, and the results showed that the difference was statistically significant ( MD=-2.64, 95% CI-3.84 to-1.43, P<0.01). The first time of exhaust time was compared in 12 articles, and the results showed that the difference was statistically significant ( MD=-15.32, 95% CI-19.96 to-10.69, P<0.01). The postoperative first defecation time was compared in 7 articles, and the results showed that the difference was statistically significant ( MD=-13.55, 95% CI-17.86 to -9.24, P < 0.01). The postoperative first feeding time was compared in 7 articles, and the results showed that the difference was statistically significant ( MD=-13.20, 95% CI-17.61 to-8.80, P < 0.01). Conclusions Goal-directed fluid therapy by SVV programs can help patients undergoing gastrointestinal surgery with earlier recovery in gastrointestinal function and shorter length of hospital stay or postoperative hospital stay.