Circular RNA(circRNA)represents a unique class of closed-loop structured non-coding RNAs involved in various biological processes such as cell proliferation,differentiation,and apopto-sis.They play a significant role in the development of numerous diseases,and also serve as poten-tial biomarkers and therapeutic targets.To explore the impact of circRNA on viral replication,this study performed an omics measurement and analysis of circRNA differential expression in MC38 cells infected with HY12 enterovirus.It was found that,following HY12 virus infection,the ex-pressionlevels of 570 circRNAs were upregulated,while 381 circRNAs were downregulated.A-mong the upregulated circRNAs,the significantly upregulated circRNA mmu_circ_0001083 was selected for further investigation into its association with HY12 infection and its impact on viral replication.The results indicated that after HY12 virus infection,the expression of host circRNA mmu_circ_0001083 significantly increased,and its expression level was dependent on the virus dos-age and time.Compared to normal MC38 cells infected with the HY12 virus,cells with knocked down expression of circRNA mmu_circ_0001083 showed reduced expression of the 2C protein and significantly lower viral titers.Conversely,after HY12 virus infection in MC38 cells with overexpressed circRNA mmu_circ_0001083,there was an increase in the expression of the 2C pro-tein and a significant rise in viral titers.These results suggest that the upregulation of host cir-cRNA mmu_circ_0001083 is significantly positively correlated with the replication of HY12 virus,meaning mmu_circ_0001083 plays a positive regulatory role in the replication of HY12.This find-ing lays a foundation for future in-depth studies on the regulatory mechanisms of circRNA on viral replication.

The NMGCF-19 strain is an E.coli strain isolated and identified in our laboratory from lambs manifesting severe diarrhea and meningitis.Previous analysis of the genome sequence of NMGCF-19 strain showed that the outer membrane protein A(ompA)gene was a potential viru-lent gene.In order to determine whether the ompA gene is associated with the pathogenicity of NMGCF-19 strain and the underlying mechanism,the NMGCF-19 strain with ompA knockout(NMGCF-19△ompA)was generated in this study using CRISPR/Cas9 technology and used to de-termine the role of ompA gene in mediating the encephalitis by NMGCF-19 infection and the un-derlying mechanism using the mouse model system.The results showed that the neuronal cell nec-rosis in the hippocampus in mice infected by NMGCF-19△ompA was significantly reduced and was not focal compared with that of mice infected with the wild-type NMGCF-19 strain.The number of bacteria in brain of mice infected by NMGCF-19 △ompA was significantly reduced in comparison to that of mice infected by NMGCF-19.Simultaneously,the mRNA and protein expression levels of the tight junction proteins ZO-1 and Occludin were both increased in mice infected by NMGCF-19 △ompA strain compared with the mice infected by NMGCF-19 strain.These results suggest that the ompA gene is a virulent gene and plays an important role in the invasion of the blood-brain barrier by NMGCF-19 strain in mice.

A recombinant enzyme-mediated nucleic acid amplification(RAA)technology combined with colloidal gold test strips was developed for the rapid detection of bovine enterovirus(BEV).Using the highly conserved BEV 5'UTR as the target sequence,the primers were designed and screened.Downstream primer labeled with biotin at the 5'end and the probe labeled with 6-FAM at the 5'end were used to establish the RT-RAA method.The test strips were assembled by using mouse-derived anti-6-FAM monoclonal antibody as the gold standard antibody,with a streptavidin encapsulated in the detection line and sheep anti-mouse IgG encapsulated in the quality control line.A RT-RAA-LFD method was established by combing RAA technique with the prepared later-al flow device test strips for the detection of bovine enterovirus nucleic acids.The specificity,sensi-tivity,repeatability,and clinical application of the method are also evaluated.The results showed that the optimal primer concentration of this method was 5 μmol/L,and the amplification of BEV nucleic acids was accomplished by reacting at 35 ℃ for 8 min with the lowest detection limit of 101 copies/μL.No cross-reactivity with bovine viral diarrhea virus,bovine parvovirus,and foot-and-mouth disease virus was observed.The efficacy for the prepared test strips was at least for 90 d kept at 4 ℃.Detection of 74 clinical samples yielded a similar result compared with RT-PCR method.The above results demonstrated that the BEV RT-RAA-LFD method established in this study has high sensitivity,specificity,and more convenient to use,which is suitable for clinical de-tection on-site and provides a new technical tool for the diagnosis and epidemiological investigation of BEV infection.

Objective:In this study, the collected mosquito samples were subjected to viral isolation to identify the species and branch characteristics of arboviruses in five regions of Shanxi Province.Methods:Eight arboviruses in mosquito samples collected from July to September 2020 were detected by real-time fluorescent quantitative PCR, and virus isolation was carried out through cell culture. Virus isolates were identified and analyzed by molecular biology and bioinformatics method.Results:We detected 1 batch of positive samples of Japanese encephalitis virus, 2 batches of positive samples of Culex flavivirus and 8 batches of positive samples of Nam Dinh virus among 121 batches of mosquito samples. Seven virus isolates were isolated, numbered: SX-YJ-Cxp-4、SX-YJ-Ars-2、SX-YJ-Cxp-1、SX-LY-Cxp-10、SX-GP-Ars-5、SX-GP-Cxp-2、SX-GP-Cxp-4, all of which were identified as Nam Dinh virus, and the whole genome sequencing was performed on one of them, and the result showed that Shanxi Nam Dinh virus isolate and Yunnan Nam Dinh virus isolate belonged to the same evolutionary branch.Conclusions:Nam Dinh virus was isolated and identified on the specimen from Shanxi province for the first time.

Cranial defects may result from clinical brain tumor surgery or accidental trauma. The defect skulls require hand-designed skull implants to repair. The edge of the skull implant needs to be accurately matched to the boundary of the skull wound with various defects. For the manual design of cranial implants, it is time-consuming and technically demanding, and the accuracy is low. Therefore, an informer residual attention U-Net (IRA-Unet) for the automatic design of three-dimensional (3D) skull implants was proposed in this paper. Informer was applied from the field of natural language processing to the field of computer vision for attention extraction. Informer attention can extract attention and make the model focus more on the location of the skull defect. Informer attention can also reduce the computation and parameter count from N ² to log( N). Furthermore,the informer residual attention is constructed. The informer attention and the residual are combined and placed in the position of the model close to the output layer. Thus, the model can select and synthesize the global receptive field and local information to improve the model accuracy and speed up the model convergence. In this paper, the open data set of the AutoImplant 2020 was used for training and testing, and the effects of direct and indirect acquisition of skull implants on the results were compared and analyzed in the experimental part. The experimental results show that the performance of the model is robust on the test set of 110 cases fromAutoImplant 2020. The Dice coefficient and Hausdorff distance are 0.940 4 and 3.686 6, respectively. The proposed model reduces the resources required to run the model while maintaining the accuracy of the cranial implant shape, and effectively assists the surgeon in automating the design of efficient cranial repair, thereby improving the quality of the patient's postoperative recovery.
Humans ; Computer-Aided Design ; Skull/surgery* ; Prostheses and Implants ; Head

Objective To investigate the significance of using procalcitonin (PCT) combined with acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) scores to estimate the prognosis of elderly patients with sepsis. Methods One hundred and fourteen elderly patients with sepsis admitted into the Department of Intensive Care Unit (ICU) of 13th Division Xinjiang Production and Construction Corps Red Star Hospital from January 2011 to December 2017 were enrolled, general information of all patients [sex, age, body mass index (BMI), smoking, drinking alcohol, site of infection, underlying disease or complication, education level and marital status], vital signs (pulse, respiration frequency, pH value, body temperature, oxygenation index, diastolic blood pressure, systolic blood pressure), blood and biochemical indicators [blood sugar, high-density lipoprotein (HDL) and low-density lipoprotein (LDL)], D-dimer, PCT, C-reactive protein (CRP), APACHE Ⅱ, chronic health score (CHS) were recorded and survival situation of all patients after entering the study for 28 days. Univariate and multivariate analyses were used to analyze the prognostic factors of elderly patients with sepsis, and the receiver operating characteristic curve (ROC) was drawn to evaluate the diagnostic efficacy of the factors in sepsis. Results Within 28 days from admission to hospital, 64 patients (44.44%) died, 80 patients (55.56%) survived, and there were no significant differences in the sex, age, BMI, infected site, underlying disease or complication, education level, marital status, smoking, drinking alcohol, pulse, respiration frequency, pH, body temperature, oxygenation index, blood pressure, blood glucose, HDL, LDL and infection type in the comparisons between the survival and death groups (all P > 0.05). Compared with the survival group, the D-dimer, PCT, CRP, APACHE Ⅱ, mechanical ventilation ratio were higher in the death group [D-dimer (mg/L):3.6±1.1 vs. 3.2±1.2, PCT (mg/L): 15.4±3.5 vs. 4.1±1.4, CRP (ng/L): 637.0±8.9 vs. 596.0±9.6, APACHEⅡ:31.4±5.5 vs. 16.4±4.5, proportion of mechanical ventilation: 87.5% (56/64) vs. 56.2% (45/80), all P < 0.05];multivariate analyses showed that PCT, APACHEⅡ and proportion of mechanical ventilation were independent risk factors of the prognosis of sepsis [PCT: odds ratio (OR) = 4.126, 95% confidence interval (95%CI) = 2.045-6.115, P = 0.000; APACHEⅡ: OR = 2.935, 95%CI = 1.237-4.118, P = 0.001; mechanical ventilation: OR = 2.012, 95%CI =1.068-3.048, P = 0.034, all P < 0.05]. The PCT, APACHE Ⅱ and PCT combined with APACHEⅡ all can be used to diagnose the prognosis of senile sepsis, and the diagnostic value of PCT combined with APACHEⅡ was the largest [area under the ROC curve (AUC) = 0.946, 95%CI = 0.894-0.971, sensitivity = 86.7%, specificity = 90.8%, P = 0.000]. Conclusion PCT combined with APACHE Ⅱscore can be used to estimate the prognosis of elderly patients with sepsis.

OBJECTIVE: To explore the molecular mechanism underlying 1,2-dichloroethane(1,2-DCE) induced apoptosis by screening differentially expressed proteins in human astrocytes( HAs). METHODS: HAs were cultured in complete medium with 1,2-DCE at various concentrations of 0-80 or 0-40 mmol/L. After 24 hours,apoptosis of HAs was evaluated using flow cytometry and staining with annexin Ⅴ-fluoresce in isothiocyanate and propidium iodide. An AAH-APO-1-2 protein chip was used to screen differentially expressed proteins and quantitative real-time polymease chain reaction(qRT-PCR) was used to verify related differentially expressed genes(DEGs). RESULTS: At 1,2-DCE concentrations of0-80 mmol/L,the total apoptosis rate of HAs increased with 1,2-DCE concentrations in a dose-dependent manner( P <0. 01). Seven different kinds of proteins were screened out by apoptotic protein chip. Among them,the expression of insulin-like growth factor-binding protein( IGFBP)-1,IGFBP-4 and cytochrome C( Cyto C) were up-regulated,while the expression of P27,cysteine aspartic acid specific protease-3( Caspase-3),B-cell lymphoma-2 interacting mediator of cell death( BIM) and BH3 interacting domain death agonist( BID) were down-regulated compared with the control group. The result of DEGs verified by qRT-PCR showed that the expression of mRNA of IGFBP-1,IGFBP-4 and Cyto C at 1,2-DCE concentrations of 40 mmol/L was up-regulated. This result was in consistent with the trend of target expression in the protein chip. The mRNA expression of Caspase-3,BIM and BID was also up-regulated. CONCLUSION: 1,2-DCE induces apoptosis of HAs through mitochondrial pathway.

Objective The efficacy and safety of rectal instillation with formula for clearing heat, eliminating phlegm and relaxing bowel on treating encephalopathy complicated with pulmonary infection were evaluated by randomized controlled clinical trials. Methods Eighty eligible cases of encephalopathy complicated with pulmonary infection were randomly divided into treatment group and control group. Control group was given conventional treatment and treatment group was given rectal instillation treatment with formula for clearing heat , eliminating phlegm and relaxing bowel. The changes of index were observed before and after treatment in two groups including temperature,antifebrile time,white blood cell count,neutrophils ratio,C-reactive protein,procalcitonin, pneumonia severity index,and the efficacy score of TCM syndrome. Results Rectal instillation with formula for clearing heat and eliminating phlegm to relax bowel can be better improved encephalopathy complicated with pulmonary infection with syndrome of phlegm-heat obstructing in which the patients have yellow sputum, constipation,yellow urinary and other symptoms. It can reduce TCM syndrome score and level of serum calcitonin, relieve inflammation,enhanc antibacterial effect,and improve the clinical curative effect. Conclusions The curative effects of rectal instillation with formula for clearing heat and eliminating phlegm to relax bowel on treating encephalopathy complicated with pulmonary is definite which has no adverse reaction and safety use. It is worthy of further popularizing in clinic.

Objective To explore the effect of the pattern of nurse-patient double-check and signature in security management of intravenous administration and to understand the degree of satisfaction of patients with safe medication management.Methods The experience on security management of intravenous administration in inpatients from Oncology Department in the West China Hospital of Sichuan University were summarized from December 2015 to January 2017. Inpatients with intravenous administration between December 2015 and June 2016 acted as control group. Inpatients with intravenous administration between July 2016 and January 2017 acted as improved group along with the management method of the pattern of nurse-patient double-check and signature. The situation on security management of intravenous administration and the degree of satisfaction of patients with safe medication was compared between two groups.Results After implementing the pattern of nurse-patient double-check and signature along with intravenous administration, there was no medication administering errors (MAE). The degree of satisfaction of patients with safe medication raised from 94.20 % to 100.00% with a significant difference (P< 0.01).Conclusions The pattern of nurse-patient double-check and signature realizes the goal of patients' involvement in medical safety, ensures the infusion safety. It is worth to be used widely in clinical application.

Objective:To investigate the effect of DKK1 on linearly patterned programmed cell necrosis (LPPCN) and vasculogenic mim-icry (VM) and the related molecular mechanism in non-small cell lung cancer (NSCLC). Methods:A total of 173 human NSCLC speci-mens were collected to detect LPPCN by H&E staining, detect VM with CD31/PAS double staining, and investigate DKK1 and related protein expression by immunohistochemistry. The clinical pathological significance of LPPCN, VM, and DKK1 and the correlation of them were analyzed. Human NSCLC H460-DKK1 cells were engrafed in nude mice to evaluate the influence of DKK1 up-regulation on VM and LPPCN in vivo. Results:Approximately, 14.45%(25/173) of NSCLC had VM and 49.71%(86/173) had LPPCN. 25.6%(22/86) of NSCLC cases in LPPCN-positive group formed VM. Both of VM and LPPCN were all correlated with poor differentiation, late TNM stage, easy recurrence and metastasis and poor prognosis in NSCLC. DKK1 expression in the VM-positive group and the LPPCN-positive group was higher than that in the VM-negative group and the LPPCN-negative group, respectively. DKK1, LPPCN, and VM were positive-ly correlated with VE-cadherin, MMP-2,β-catenin nuclear expression and Twist1. H460-DKK1 transplantation tumor model confirmed that DKK1 promotes the expression of VM and LPPCN and related proteins in NSCLC. Conclusion:The increase of theβ-catenin and Twist1 expression induced by DKK1 may promote the formation of LPPCN and VM in NSCLC.