Objective To investigate the epidemiological characteristics and risk factors of non-alcoholic fatty liver disease in Jincheng between 2015 and 2020. Methods Clinical data of 8,578 medical check-ups at Physical Examination Center of ou hospital from January 2015 to December 2020 were retrospectively selected. The prevalence of non-alcoholic fatty liver disease in the last 5 years was recorded, and Logistic regression was utilized to identify the risk factors for the development of non-alcoholic fatty liver disease. Results The overall prevalence of non-alcoholic fatty liver disease in Jincheng was 14.57% in 2015-2020. The prevalence of non-alcoholic fatty liver disease was higher in men than in women (16.99% vs 10.98%) and highest in the 40-59 age group (18.76%). No statistical difference was reported in blood urea nitrogen (BUN) and serum creatinine (Scr) between groups (P>0.05), while statistical difference was found in diabetes, hypertension, body mass index (BMI), waist circumference, weekly exercise frequency, daily vegetable intake, triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), alanine aminotransferase (ALT) and uric acid (UA) between two groups (P<0.05). Multivariate Logistic regression analysis denoted that BMI (OR=2.794, 95% CI: 1.745-4.550), waist circumference (OR=2.586, 95% CI: 1.585-4.299), diabetes (OR=0.644, 95% CI: 1.425-2.781), hypertension (OR=1.479, 95% CI: 1.121-2.290), weekly exercise ≥6h (OR=0.617, 95% CI: 0.519-0.709), daily vegetable intake ≥300g (OR=0.590, 95% CI: 0.467-0.652), TG (OR=1.481, 95% CI: 1.122-1.996), TC (OR=1.562, 95% CI:1.143-2.135), LDL-C (OR=1.440, 95% CI: 1.139-2.048), HDL-C (OR=0.656 , 95% CI: 0.587-0.783) , ALT (OR=1.591, 95% CI: 1.056-2.183), and UA (OR=1.412, 95% CI: 1.009-1.887) were risk factors for non-alcoholic fatty liver disease (P<0.05) . Conclusion The prevalence of non-alcoholic fatty liver disease in Jincheng City from 2015 to 2020 is 14.57%, the prevalence of males is higher than that of females, and the prevalence rate is the highest in the 40-59 age group. Moreover , diabetes mellitus , hypertension , BMI , waist circumference , weekly exercise , daily vegetable intake , serum TG, TC, LDL-C, HDL-C, ALT, and UA are all associated with the risk of the disease.

Renal tumor scoring systems can describe the anatomical characteristics of renal tumors. It is an important standard to evaluate the surgical complexity and to evaluate the surgical complexity and feasibility of partial nephrectomy. Scholars at home and abroad have established various scoring systems based on different anatomical parameters，such as R.E.N.A.L.，PADUA，C-Index，which are used to guide the clinical selection of surgical modalities，and predict perioperative complications and prognosis. In this paper，various scoring systems are grouped into three major categories according to their functions：prediction of surgical complexity，prediction of complications，and prediction of prognosis. The contents，characteristics and clinical application value of various renal tumor scoring systems are introduced in detail to guide urologists，enhance their surgical decision-making ability，and improve the clinical outcomes.

Objective To explore the correlation of MET status in patients with advanced prostatic acinar adenocarcinoma with the clinical pathological parameters and prognosis. Methods The specimen from 135 patients with advanced prostatic acinar adenocarcinoma was included. The expression of c-MET protein was detected via immunohistochemistry, and MET gene amplification was assessed by fluorescence in situ hybridization. The relationships of c-MET expression and gene amplification with clinicopathological features and prognosis were analyzed. Results The positive expression rate of c-MET was 52.60% (71/135). Compared with the c-MET expression in adjacent tissues, that in tumor tissues showed lower heterogeneous expression. Among the cases, 1.71% (2/117) exhibited MET gene polyploidy, but no gene amplification was detected. Positive c-MET expression was significantly correlated with high Gleason scores and grade groups (P=0.0073). However, no significant relationship was found between c-MET expression and progression-free survival or post-treatment t-PSA levels. Conclusion c-MET protein is expressed at a relatively low level in advanced prostatic acinar adenocarcinoma, suggesting that c-MET may not be a viable target for ADC drug development in prostatic acinar adenocarcinoma.

Objective To investigate the effects of abdominal tuina on the expression of PI3K and N-methyl-D-aspartate receptor(NMDAR)subunit NR1 in spinal dorsal horn and the morphology of spinal dorsal horn neurons in ulcerative colitis(UC)rats;To explore its mechanism of action in treating UC.Methods Totally 36 SD rats were randomly divided into normal group,model group,abdominal tuina group,mesalazine group,PI3K stimulation group and PI3K stimulation + abdominal tuina group,with 6 rats in each group.The UC model in rats was simulated by drinking dextran sulfate solution freely.The abdominal tuina group and the PI3K stimulation + abdominal tuina group were given abdominal tuina intervention,the mesalazine group was given mesalazine solution for gavage,and the PI3K stimulation group and PI3K stimulation + abdominal tuina group were given intrathecal injection of PI3K agonist,once a day,for consecutive 15 days.Abdominal withdrawal reflex(AWR)score and acetic acid twist were used to observe the abdominal pain symptoms in rats.The expression of PI3K and NR1 in spinal dorsal horn were detected by immunofluorescence staining and Western blot,and the morphological changes of spinal dorsal horn neurons were observed by Nissl staining.Results Compared with the normal group,AWR score and twisting times of rats in model group significantly increased(P<0.01),the expression of PI3K and NR1 protein in spinal dorsal horn significantly increased(P<0.05,P<0.01),the morphology of spinal dorsal horn neurons was disordered,forming a large number of vacuolar like structures,and the Nissl body structure was fuzzy and incomplete.Compared with the model group,AWR scores and twisting times of abdominal tuina group and mesalazine group significantly decreased(P<0.05,P<0.01),and the expression of PI3K and NR1 protein significantly decreased(P<0.05,P<0.01),the edema of spinal dorsal horn neurons was milder,with fewer vacuolar changes and an increase in the number of Nissl bodies;AWR scores and twisting times of PI3K stimulation group and PI3K stimulation + abdominal tuina group significantly increased(P<0.05,P<0.01),and the expressions of PI3K and NR1 protein increased(P<0.05,P<0.01),a large number of neurons underwent pyknosis and necrosis,and the number of Nissl bodies decreased,even dissolving and disappearing.Conclusion Abdominal tuina can effectively improve the symptoms of abdominal pain in UC model rats,and its mechanism may be related to inhibiting the expression of PI3K and NR1 in spinal dorsal horn and improving the morphology of spinal dorsal horn neurons.

ObjectiveTo explore the possible mechanism of Tuina at Weizhong （BL 40） for relieving sciatica from the perspective of hippocampal synaptic plasticity. MethodsSixty SD rats were randomly divided into sham operation group， model group， Tuina group， MK-801 group， MK-801 plus Tuina group， 12 rats in each group. After lateral ventricular cannulation， rats model with chronic compression injury of the right sciatic nerve were prepared in all groups except the sham operation group. On day 4 after modelling， rats in the Tuina group start Tuina at Weizhong （BL 40） for 10 mins once a day for a total of 14 days； rats in the MK-801 group started injecting with 0.25 μg/μl of the N-methyl-D-aspartate receptor 2B （NR2B） blocker， dizocycline （MK-801）， 0.5 μl of which was administered daily in the lateral ventricle for 14 days. Rats in the MK-801 plus Tuina group underwent Tuina after 30 mins when completing MK-801 injection in the lateral ventricle， in the same way as above； rats in the model group and the sham operation group did not undergo any intervention. Spontaneous pain behaviour scores and paw withdraw thresholds （PWTs） were examined on day 1 （base value） before modelling and on day 4， 10， 14 and 18 after modelling； and on day 19， the brain tissues of the rats in each group were sampled and the number and morphology of the Nysted-positive cells in the hippocampal CA3 region were observed using Nysted staining； and the number of synapses， the thickness of postsynaptic dense material， the length of active band and the curvature of synaptic interface in hippocampal CA3 region were observed by transmission electron microscopy； and the expression of synapse-associated proteins NR2B and postsynaptic density protein-95 （PSD95） in hippocampal CA3 was detected by immunofluorescence staining and immunoblotting. ResultsCompared with the same time in the sham operation group， spontaneous pain scores significantly increased and PWTs decreased on day 4， 10， 14， and 18 after modelling in the model group （P＜0.05）； compared with the model group， spontaneous pain scores in Tuina group of rats significantly decreased on day 10， 14， and 18 after modelling， and PWTs significantly increased on day 14 and 18 after modelling （P＜0.05）. Compared with Tuina group， spontaneous pain scores increased on day 10， 14， and 18 of modelling， and PWTs decreased at days 14 and 18 of modelling in the MK-801 plus Tuina group had higher spontaneous pain scores on days 10， 14， and 18 after modelling and lower PWTs on days 14 and 18 after modelling （P＜0.05）. Compared with the sham operation group， the neuronal arrangement in the hippocampal CA3 region of the rats in the model group was disordered， with decreased number of Nysted-positive cells and synapses， reduced thickness of postsynaptic densities， length of active bands， and curvature of synaptic interfaces， wider synaptic gaps， and decreased immunofluorescent positive expression of NR2B and PSD95 as well as the expression of immunoblotting proteins in hippocampal CA3 region （P＜0.05）. Compared with the model group， more dense arranged nerve cells， the number of Nysted-positive cells， the number of synapses， the thickness of postsynaptic dense material， the length of active bands increased， the synaptic gap became significantly narrower， and the positive expression of immunofluorescence and immunoblotting protein expression of NR2B， PSD95 increased in the rat hippocampal CA3 region of Tuina group （P＜0.05）. Compared with Tuina group， the neuronal morphology of the hippocampal CA3 region in MK-801 plus Tuina group was severely damaged， and the number of Nystrom's-positive cells， the number of synapses， the thickness of post-synaptic densities， the length of active bands， and the curvature of synaptic interfaces reduced， the synaptic gaps became wider， and the immunofluorescent positive expression of NR2B， PSD95， and the expression of immunostained proteins decreased （P＜0.05）. ConclusionTuina at "Weizhong" （BL 40） showed significant analgesic effect， and one of the possible mechanisms concluded as significantly increasing the levels of NR2B and PSD95 protein expression in hippocampal CA3 region and thus modulating the synaptic plasticity of the hippocampus.

Objective To explore the performance of a new multimodal feature fusion classification model based on distance matching and discriminative representation learning for differentiating high-grade glioma(HGG)from solitary brain metastasis(SBM).Methods We collected multi-parametric magnetic resonance imaging(MRI)data from 61 patients with HGG and 60 with SBM,and delineated regions of interest(ROI)on T1WI,T2WI,T2-weighted fluid attenuated inversion recovery(T2_FLAIR)and post-contrast enhancement T1WI(CE_T1WI)images.The radiomics features were extracted from each sequence using Pyradiomics and fused using a multimodal feature fusion classification model based on distance matching and discriminative representation learning to obtain a classification model.The discriminative performance of the classification model for differentiating HGG from SBM was evaluated using five-fold cross-validation with metrics of specificity,sensitivity,accuracy,and the area under the ROC curve(AUC)and quantitatively compared with other feature fusion models.Visual experiments were conducted to examine the fused features obtained by the proposed model to validate its feasibility and effectiveness.Results The five-fold cross-validation results showed that the proposed multimodal feature fusion classification model had a specificity of 0.871,a sensitivity of 0.817,an accuracy of 0.843,and an AUC of 0.930 for distinguishing HGG from SBM.This feature fusion method exhibited excellent discriminative performance in the visual experiments.Conclusion The proposed multimodal feature fusion classification model has an excellent ability for differentiating HGG from SBM with significant advantages over other feature fusion classification models in discrimination and classification tasks between HGG and SBM.

This study aims to develop an independent control system for radiofrequency electrode arrays,intended for the conformal ablation of unwanted tissues.Unlike traditional single radiofrequency voltage applications,this study employs high-frequency transformer isolation and radiofrequency load matching technologies to divide the radiofrequency signal source into eight independent groups.Each group operates at the same phase and frequency but with different voltage values.Experimental results indicate that the designed system can independently output various combinations of radiofrequency signals.The actual output voltage has a relative error controlled within 6%,the frequency error is less than 0.5%,and the phase difference among the groups is less than 1°.In the biomimetic tissue heating experiments,it is found that by controlling the voltage of each electrode within the electrode array,ablation of different shapes can be achieved,and the ablation depth is positively correlated with the applied radiofrequency voltage.

Objective To observe the effect of tuina on glutamate uptake and synaptic cleft in the spinal dorsal horn of rats with neuropathic pain through astrocyte NDRG2/GLT-1 pathway,and to explore the potential analgesic mechanism of tuina on neuropathic pain.Methods A total of 54 SD rats were randomly divided into naive group,model group and tuina group(n=18).The CCI model was established in the model group,and the tuina group was treated with acupressure at"Weizhong"(BL 40)from the 4th day after CCI model was successfully established for 14 days.The changes of paw withdrawal threshold at different time points were observed to evaluate the analgesic effect of tuina.Immunofluorescence was used to observe the co-expression of NDRG2?GLT-1 and astrocytes in the spinal dorsal horn.The mRNA levels of NDRG2 and GLT-1 in astrocytes were detected by quantitative real time polymerase chain reaction.The concentrations of glutamate in synaptic cleft were measured by liquid chromatography coupled to tandem mass spectrometry.The width of the synaptic cleft was observed by transmission electron microscopy.Results Compared with the naive group,the paw withdrawal threshold in the CCI group decreased continuously(P<0.01).The number of NDRG2 and GFAP co-labeling positive cells in the spinal dorsal horn increased significantly(P<0.01),and the number of GLT-1 and GFAP co-labeled positive cells was significantly reduced(P<0.01).NDRG2 mRNA expression was up-regulated and GLT-1 mRNA expression decreased in astrocytes(P<0.01).The concentrations of glutamate increased significantly(P<0.01);The synaptic cleft was significantly narrowed(P<0.05).After tuina intervention,the above trend was significantly reversed.Compared with the model group,the paw withdrawal threshold of the tuina group increased from 11 days after CCI(P<0.01),the number of NDRG2 and GFAP co-labeling positive cells in the spinal dorsal horn was significantly reduced(P<0.01),and the number of GLT-1 and GFAP co-labeled positive cells increased significantly(P<0.01);down-regulated the expression of NDRG2 mRNA and restored GLT-1 mRNA expression in astrocytes(P<0.01);decreased glutamate concentration in synaptic cleft(P<0.05),the synaptic cleft was relatively widened(P<0.05).Conclusion Tuina alleviates pain in CCI rats at the spinal cord level possibly by promoting the uptake of glutamate by NDRG2/GLT-1 pathway in astrocytes,restoring the width of synaptic cleft and reversing synaptic plasticity.

Objective:To summarize the clinical characteristics, prognostic factors and treatment outcomes of childhood aggressive mature B-cell lymphoma after liver transplantation.Methods:This retrospective study included 18 children with newly diagnosed aggressive mature B-cell lymphoma after liver transplantation and treated from June 2018 to June 2022 in the Department of Hematology and Oncology of Shanghai Children′s Medical Center, Shanghai Jiao Tong University School of Medicine. Clinical characteristics, treatment and outcomes of patients at last evaluation were analyzed. Overall survival (OS) and event free survival (EFS) rates were calculated by Kaplan-Meier method and Log-Rank analysis was performed to find factors of poor prognosis.Results:Among all 18 patients, there were 6 males and 12 females, and the age of onset was 40 (35, 54) months. The interval from transplant to tumor diagnosis was 21 (17, 35) months and 5 patients had early onset disease (<1 year since transplant). Seventeen patients had abdominal lesions. Diarrhea, vomiting and abdominal masses were the main clinical manifestations. All patients were Epstein-Barr virus (EBV) related posttransplant lymphoproliferative disorders (PTLD). One patient received individualized therapy due to critical sick at diagnosis, and the remaining 17 patients received CP (cyclophosphamide, methylprednisolone plus rituximab) and (or) modified EPOCH (prednisone, etoposide, doxorubicin, vincristine, cyclophosphamide plus rituximab) regimens. Of all 18 patients, 15 cases got complete response, 2 cases got partial response, 1 patient died of severe infection. The 2-year OS and EFS rates of 18 patients were (94±5)% and (83±8)%, respectively. None of age, gender or early onset disease had effect on OS and EFS rates in univariate analysis (all P>0.05). Conclusions:The symptoms of PTLD were atypical. Close surveillance of EBV-DNA for patients after liver transplantation was crucial to early stage PTLD diagnosis. CP or modified EPOCH regimen was efficient for pediatric patients with aggressive mature B cell lymphoma after liver transplantation.

Cooling system of low temperature is a key component of superconducting magnetic resonance equipment in maintaining the superconducting state.This paper investigated the contents and methods of routine and systematic maintenance of superconducting magnetic resonance equipment through analyzed the principle of structure and composition of cryogenic refrigeration system,and ordered the work flow of water refrigeration and helium refrigeration.In view of the phenomenon of cold head fault,water circulation fault and helium circulation fault in the operation of cryogenic refrigeration system,this paper analyzed,troubleshot and dealt the fault causes,and investigated the maintenance path on the perspective from structure to function,which effectively solved the occurred faults in the operation of equipment.Managers of superconducting magnetic resonance equipment should strengthen the accumulation for theoretical knowledge of cryogenic refrigeration systems,and summarize management experience of daily maintenance,and improve capabilities of analyzing and processing fault,and provide technical support for operation quality and security guarantee of equipment.