Objective To explore the clinical and imaging manifestations of posterior tibial tendon dysfunction(PTTD).Methods A retrospective selection was conducted on 61 patients with clinically diagnosed PTTD.According to the classification criteria of Johnson and Strom,8 patients were classified as stage 1,17 as stage 2,20 as stage 3,and 16 as stage 4.The clinical manifestations and imaging features of patients were summarized at each stage.Results Among the 8 patients with stage 1 PTTD,no abnormalities were found on X-ray examination of the weight-bearing foot,while MRI revealed posterior tibial tendon(PTT)tendinitis in 4 cases(50.0％).For stage 2 patients(n=17),X-ray examination of the weight-bearing foot showed a decrease in the longitudinal arch of the foot in 15 patients(88.2％).MRI mainly revealed PTT degeneration in 12 cases(70.6％),PTT tears in 2 cases(11.8％),and other structural injuries in 5 cases(29.4％).For stages 3-4 patients(n=36),X-ray examination of the weight-bearing foot showed flatfoot in all cases.MRI mainly revealed PTT degeneration in 12 cases(33.3％),PTT tears in 24 cases(66.7％),spring ligament injuries in 33 cases(91.7％),and deltoid ligament injuries in 23 cases(63.9％).Conclusion Patients with stage 1 PTTD often have a normal foot longitudinal arch and may present with PTT tendinitis.Middle-aged females are more commonly affected by advanced PTTD,which is characterized by gradual decrease and collapse of the foot arch,accompanied by varying degrees of PTT degeneration and tears.The spring ligament injuries and deltoid ligament are frequently involved in structural injuries associated with PTTD.

Objective:To investigate the predictive value of elevated calprotectin S100A9 (S100A9) concentration during living-donor liver transplantation (LDLT) for early acute lung injury (ALI) in children with biliary atresia.Method:A retrospective analysis was conducted on 280 pediatric patients with biliary atresia who underwent LDLT using hyperreduced left lateral segment grafts at Tianjin First Central Hospital between January 2019 and January 2021. Based on intraoperative serum S100A9 levels at 30 minutes after graft reperfusion, patients were divided into the high S100A9 group (≥9.05 μg/L, 141 cases) and the low S100A9 group (<9.05 μg/L, 139 cases). General clinical characteristics were compared between the two groups. Univariate and multivariate logistic regression analyses were performed to examine the correlation between S100A9 levels and early postoperative ALI. The predictive value of risk factors was assessed using receiver operating characteristic (ROC) curve analysis with calculation of the area under the curve (AUC) .Result:A total of 280 eligible children were included in the study, with 141 in the high S100A9 group and 139 in the low S100A9 group. The incidence of ALI was significantly higher in the high S100A9 group (31.2%) compared to the low S100A9 group (10.8%). Multivariate regression analysis identified elevated preoperative creatinine levels ( OR=1.191, 95% CI: 1.069~1.321, P=0.002), increased intraoperative S100A9 concentrations ( OR=1.426, 95% CI: 1.272~1.599, P=0.021), and higher intraoperative blood transfusion volume ( OR=0.985, 95% CI: 0.973~0.997, P=0.017) as independent risk factors for postoperative ALI in pediatric LDLT. The predictive value of intraoperative S100A9 levels for ALI was significant, with an AUC of 0.816 (95% CI: 0.758~0.874), a sensitivity of 80.5%, a specificity of 73.7%, and an optimal cutoff value of 9.49 μg/L. Furthermore, preoperative albumin and creatinine levels were found to be correlated with increased intraoperative S100A9 levels. Conclusion:Elevated intraoperative S100A9 levels, increased preoperative creatinine levels, and higher intraoperative blood transfusion volumes are independent risk factors for early ALI following pediatric LDLT. S100A9 levels have strong predictive value for ALI occurrence, highlighting the need for perioperative monitoring and intervention strategies to improve postoperative outcomes.

Objective To explore the diagnostic value of deep learning image reconstruction(DLIR)com-bined with low-dose chest computed tomography(CT)with axial scan in the diagnosis of mycoplasma pneumoniae pneumonia(MPP)in children,and to provide reference for clinical practice.Methods 160 cases MPP children from February 2024 to June 2025 were selected as study subjects,and low-dose chest CT with axial scan was performed on all patients.DLIR and conventional adaptive iterative reconstruction-V(ASIR-V)were used for image reconstruction.The objective image quality[background noise(SD),signal-to-noise ratio(SNR),and contrast-to-noise ratio(CNR)],subjective image quality,and CT sign detection rate were compared,and the consistency of DLIR and ASIR-V in the diagnosis of MPP severity and clinical diagnosis was compared.Results As the intensity of DLIR and the weight of ASIR increasd,SD gradually decreased,while SNR and CNR gradually increased.The high-strength DLIR(DLIR-H)SD was lower than that of ASIR with a blending level of 80%(ASIR-V80%).The SNR and CNR were higher than those of ASIR-V80%,showing statistical significance(P<0.05).Ridit test showed that DLIR-H had the best subjective image quality score under different DLIR intensities,and ASIR-V80%had the best subjective image quality score under different ASIR weights.Furthermore,the subjective image quality score of DLIR-H was higher that of ASIR-V80%,and the differences were statistically significant(P<0.05).Using DLIR-H,the detection rates of air bronchogram,pulmonary consolidation,and interstitial infiltration(69.38%,86.88%,20.63%,respectively)were higher than those using ASIR-V80%(50.00%,71.88%,7.50%,respectively),and the differences were statistically significant(P<0.05).Consistency analysis showed that the Kappa value between the diagnostic results of MPP severity using DLIR-H and clinical diagnosis was 0.856(95%CI:0.771～0.996),while that between the diagnostic results of MPP severity using ASIR-V80%and clinical diagnosis was 0.498(95%CI:0.346～0.650).ROC analysis showed that the area under the curve(AUC)for diagnosing MPP severity was 0.925(95%CI:0.872～0.960)for DLIR-H and 0.729(95%CI:0.653～0.796)for ASIR-V80%,and the diagnostic value of DLIR-H was superior to that of ASIR-V80%(Z=3.952,P<0.001).Conclusion DLIR can effectively improve image quality.DLIR-H combined with low-dose chest CT with axial scan has high diagnostic value for the severity of MPP,and can serve as a feasible solution for clinical diagnosis of MPP severity and reducing radiation dose.

Objective To explore the diagnostic value of deep learning image reconstruction(DLIR)com-bined with low-dose chest computed tomography(CT)with axial scan in the diagnosis of mycoplasma pneumoniae pneumonia(MPP)in children,and to provide reference for clinical practice.Methods 160 cases MPP children from February 2024 to June 2025 were selected as study subjects,and low-dose chest CT with axial scan was performed on all patients.DLIR and conventional adaptive iterative reconstruction-V(ASIR-V)were used for image reconstruction.The objective image quality[background noise(SD),signal-to-noise ratio(SNR),and contrast-to-noise ratio(CNR)],subjective image quality,and CT sign detection rate were compared,and the consistency of DLIR and ASIR-V in the diagnosis of MPP severity and clinical diagnosis was compared.Results As the intensity of DLIR and the weight of ASIR increasd,SD gradually decreased,while SNR and CNR gradually increased.The high-strength DLIR(DLIR-H)SD was lower than that of ASIR with a blending level of 80%(ASIR-V80%).The SNR and CNR were higher than those of ASIR-V80%,showing statistical significance(P<0.05).Ridit test showed that DLIR-H had the best subjective image quality score under different DLIR intensities,and ASIR-V80%had the best subjective image quality score under different ASIR weights.Furthermore,the subjective image quality score of DLIR-H was higher that of ASIR-V80%,and the differences were statistically significant(P<0.05).Using DLIR-H,the detection rates of air bronchogram,pulmonary consolidation,and interstitial infiltration(69.38%,86.88%,20.63%,respectively)were higher than those using ASIR-V80%(50.00%,71.88%,7.50%,respectively),and the differences were statistically significant(P<0.05).Consistency analysis showed that the Kappa value between the diagnostic results of MPP severity using DLIR-H and clinical diagnosis was 0.856(95%CI:0.771～0.996),while that between the diagnostic results of MPP severity using ASIR-V80%and clinical diagnosis was 0.498(95%CI:0.346～0.650).ROC analysis showed that the area under the curve(AUC)for diagnosing MPP severity was 0.925(95%CI:0.872～0.960)for DLIR-H and 0.729(95%CI:0.653～0.796)for ASIR-V80%,and the diagnostic value of DLIR-H was superior to that of ASIR-V80%(Z=3.952,P<0.001).Conclusion DLIR can effectively improve image quality.DLIR-H combined with low-dose chest CT with axial scan has high diagnostic value for the severity of MPP,and can serve as a feasible solution for clinical diagnosis of MPP severity and reducing radiation dose.

Objective To explore the clinical and imaging manifestations of posterior tibial tendon dysfunction(PTTD).Methods A retrospective selection was conducted on 61 patients with clinically diagnosed PTTD.According to the classification criteria of Johnson and Strom,8 patients were classified as stage 1,17 as stage 2,20 as stage 3,and 16 as stage 4.The clinical manifestations and imaging features of patients were summarized at each stage.Results Among the 8 patients with stage 1 PTTD,no abnormalities were found on X-ray examination of the weight-bearing foot,while MRI revealed posterior tibial tendon(PTT)tendinitis in 4 cases(50.0％).For stage 2 patients(n=17),X-ray examination of the weight-bearing foot showed a decrease in the longitudinal arch of the foot in 15 patients(88.2％).MRI mainly revealed PTT degeneration in 12 cases(70.6％),PTT tears in 2 cases(11.8％),and other structural injuries in 5 cases(29.4％).For stages 3-4 patients(n=36),X-ray examination of the weight-bearing foot showed flatfoot in all cases.MRI mainly revealed PTT degeneration in 12 cases(33.3％),PTT tears in 24 cases(66.7％),spring ligament injuries in 33 cases(91.7％),and deltoid ligament injuries in 23 cases(63.9％).Conclusion Patients with stage 1 PTTD often have a normal foot longitudinal arch and may present with PTT tendinitis.Middle-aged females are more commonly affected by advanced PTTD,which is characterized by gradual decrease and collapse of the foot arch,accompanied by varying degrees of PTT degeneration and tears.The spring ligament injuries and deltoid ligament are frequently involved in structural injuries associated with PTTD.

Objective:To investigate the predictive value of elevated calprotectin S100A9 (S100A9) concentration during living-donor liver transplantation (LDLT) for early acute lung injury (ALI) in children with biliary atresia.Method:A retrospective analysis was conducted on 280 pediatric patients with biliary atresia who underwent LDLT using hyperreduced left lateral segment grafts at Tianjin First Central Hospital between January 2019 and January 2021. Based on intraoperative serum S100A9 levels at 30 minutes after graft reperfusion, patients were divided into the high S100A9 group (≥9.05 μg/L, 141 cases) and the low S100A9 group (<9.05 μg/L, 139 cases). General clinical characteristics were compared between the two groups. Univariate and multivariate logistic regression analyses were performed to examine the correlation between S100A9 levels and early postoperative ALI. The predictive value of risk factors was assessed using receiver operating characteristic (ROC) curve analysis with calculation of the area under the curve (AUC) .Result:A total of 280 eligible children were included in the study, with 141 in the high S100A9 group and 139 in the low S100A9 group. The incidence of ALI was significantly higher in the high S100A9 group (31.2%) compared to the low S100A9 group (10.8%). Multivariate regression analysis identified elevated preoperative creatinine levels ( OR=1.191, 95% CI: 1.069~1.321, P=0.002), increased intraoperative S100A9 concentrations ( OR=1.426, 95% CI: 1.272~1.599, P=0.021), and higher intraoperative blood transfusion volume ( OR=0.985, 95% CI: 0.973~0.997, P=0.017) as independent risk factors for postoperative ALI in pediatric LDLT. The predictive value of intraoperative S100A9 levels for ALI was significant, with an AUC of 0.816 (95% CI: 0.758~0.874), a sensitivity of 80.5%, a specificity of 73.7%, and an optimal cutoff value of 9.49 μg/L. Furthermore, preoperative albumin and creatinine levels were found to be correlated with increased intraoperative S100A9 levels. Conclusion:Elevated intraoperative S100A9 levels, increased preoperative creatinine levels, and higher intraoperative blood transfusion volumes are independent risk factors for early ALI following pediatric LDLT. S100A9 levels have strong predictive value for ALI occurrence, highlighting the need for perioperative monitoring and intervention strategies to improve postoperative outcomes.

Objective : To explore the effects of microRNA-155 (miR-155) on apoptosis of chronic myeloid leukemia ( CML) cells，and the influence of miRNA-155 regulating the expression of heat shock proteins ( HSP) 27， HSP60，HSP70． Methods : Reverse transcription-quantitative real-time PCR ( RT-qPCR) was used to detect the expression levels of miR-155 in CML-resistant imatinib (IM) cell line K562-G and CML cell line K562 ．K562-G cells were infected with the lentivirus carrying miR-155 or the negative control lentivirus ，and they were named miR-155 group and control group．The effect of miR-155 on the proliferation of drug-resistant cells was detected by cell counting kit-8 ( CCK-8) method. RT-qPCR and Western blot were used to detect the effect of miR-155 on the expression of heat shock proteins HSP27，HSP60，HSP70．Flow cytometry was used to detect the percentage of cell apoptosis in miR-155 group and control group. Results : ompared with K562 cells，miR-155 showed low expres- sion in K562-G cells (P ＜0. 05) ．The proliferation of miR-155 group cells decreased significantly from the 36th hour (P＜0. 05) ．Compared with the control group，in the miR-155 group，HSP60 and HSP70 increased (P < 0. 05) ，while HSP27 decreased (P＜0. 01) ．The apoptosis rate of miR-155 group was higher than that of control group (P＜0. 05) ． Conclusion miR-155 promotes the apoptosis of chronic myeloid leukemia cells，increases the expression of HSP60 and HSP70，and decreases the expression of HSP27 .

ObjectiveTo evaluate the effectiveness of Lutongning granules in the treatment of trigeminal neuralgia in animal models and study its mechanism of action， so as to provide laboratory data support for the clinical application of Lutongning granules and precise treatment. MethodMale SD rats were randomly divided into normal group， model group， carbamazepine group （0.06 g·kg^-1·d^-1）， high-dose Lutongning group （2.70 g·kg^-1·d^-1）， and low-dose Lutongning group （1.35 g·kg^-1·d^-1） according to the stratified basic mechanical pain thresholds， with 10 rats in each group. A trigeminal neuralgia model of rats was prepared by injecting 30% talc suspension into the infraorbital foramen area of the rat. The drug groups were administered 10 mL·kg^-1 of drugs by gavage after 2 h of modeling. The normal group and the model group were administered distilled water by gavage under the same conditions once a day for 10 consecutive days. Von Frey brushes were used to determine the mechanical pain threshold of rats. A fully automated blood and body fluid analyzer was employed to detect the blood routine of rats. Hematoxylin and eosin （HE） staining was utilized to detect the pathological changes in the trigeminal ganglion and medulla oblongata tissue. Transmission electron microscopy was used to scan the ultrastructure of the medulla oblongata tissue. Enzyme-linked immunosorbent assay （ELISA） was used to detect the levels of inflammatory factors interleukin （IL）-1， IL-6， IL-8， tumor necrosis factor （TNF）-α， neuropeptide substance P， and β-endorphins （β-EP） in the serum of rats， and Western blot was used to detect the protein expression levels of IL-1β， purinergic receptor P2X7 （P2X7R）， and phosphorylated p38 mitogen-activated protein kinase （p-p38 MAPK）. ResultCompared with that in the normal group， the pain threshold of rats in the model group was significantly lower （P<0.01）. The absolute value of neutrophils （NEUT#） and the percentage of neutrophils （NEUT） were significantly improved， and the percentage of lymphocytes （LYMPH） was significantly reduced （P<0.01）. The serum levels of IL-1， IL-6， IL-8， and TNF-α were significantly increased （P<0.01）. SP content in brain tissue was significantly increased， and β-EP content was significantly decreased （P<0.01）. The relative protein expression of IL-1β， P2X7R， and p-p38 MAPK was significantly increased （P<0.05）. HE staining and transmission electron microscopy results of medulla oblongata tissue revealed neuronal degeneration， mild proliferation of microglial cells， reduction in the number of myelinated nerves， and obvious demyelination. The trigeminal nerve fibers of rats were disarranged， and some nerve fibers showed vacuolization. Axons were swollen， and Schwann cells proliferated. Demyelination was observed. Compared with the model group， each administration group significantly increased the pain threshold of rats （P<0.05， P<0.01）， reduced NEUT# and NEUT， and elevated LYMPH （P<0.05， P<0.01）. The administration group significantly decreased the levels of IL-1， IL-6， IL-8， and TNF-α in serum and SP in brain tissue （P<0.01） and increased the level of β-EP （P<0.01）. They significantly down-regulated the protein expression of IL-1β， P2X7R， and p-p38 MAPK（P<0.05， P<0.01） and significantly ameliorated the pathological changes in medulla oblongata tissue and trigeminal nerves of rats. ConclusionLutongning Granules had significant therapeutic effects on trigeminal neuralgia induced by injection of talc into the infraorbital foramen of model rats， and the mechanism may be related to amelioration of P2X7R-mediated neuroinflammation and inhibition of demyelination of myelinated nerves.

Objective:To explore the predictive value of the prognostic nutritional index (PNI) in concurrently infected patients with acute-on-chronic liver failure (ACLF).Methods:220 cases with ACLF diagnosed and treated at the First Affiliated Hospital of Xi'an Jiaotong University from January 2011 to December 2016 were selected. Patients were divided into an infection and non-infection group according to whether they had co-infections during the course of the disease. Clinical data differences were compared between the two groups of patients. Binary logistic regression analysis was used to screen out influencing factors related to co-infection. The receiver operating characteristic curve was used to evaluate the predictive value of PNI for ACLF co-infection. The measurement data between groups were compared using the independent sample t-test and the Mann-Whitney U rank sum test. The enumeration data were analyzed using the Fisher exact probability test or the Pearson χ2 test. The Pearson method was performed for correlation analysis. The independent risk factors for liver failure associated with co-infection were analyzed by multivariate logistic analysis. Results:There were statistically significant differences in ascites, hepatorenal syndrome, PNI score, and albumin between the infection and the non-infection group ( P ?

Postoperative pain seriously affects the recovery process of patients, resulting in prolonged hospital stay and increased care costs. Appropriate application of patient-controlled analgesia devices can effectively relieve perioperative acute pain. In 1994 patient-controlled analgesia began to be used in Peking Union Medical College Hospital, and the Acute Pain Service Working Group was established in 2004. With the cooperation of anesthesiologists and specialist nurses, the group jointly has implemented the whole process and standardized management based on patient-controlled analgesia, and constantly improved and innovated working methods, laying a solid foundation for the development of postoperative pain management. This paper systematically reviews and summarizes the work from the aspects of clinical focus, nursing management experience, promotion and dissemination of pain treatment concepts, and development of acute pain service model under the new situation, with the hope of providing valuable reference for comprehensively strengthening pain management in the process of diagnosis and treatment, and enhancing patients' satisfaction with perioperative analgesia services.