Objective To screen genes associated with poor prognosis of colorectal cancer(CRC)through bioinformatics analysis.Methods The gene expression profiles of GSE74602,GSE110223,GSE113513 and GSE141174 were obtained from Gene Expression Omnibus(GEO)database,including samples from 65 CRC tissues and 65 normal tissues.Differentially expressed genes(DEGs)between CRC tissues and normal tissues were screened out by GEO2R tool and Venn software,and the consistent genes were extracted from DEGs by Venn software.A protein-protein interaction(PPI)network was constructed by the STRING database to identify key genes,which were analyzed by Kaplan-Meier Plotter and GEPIA.Kyoto encyclopedia of genes and genomes(KEGG)pathway enrichment analysis was conducted on the 13 selected genes.Results There were 171 DEGs obtained from the four datasets,including 148 up-regulated genes and 23 down-regulated genes.Up-regulated DEGs were enriched in the redox processes,bicarbonate transport,digestion,ion trans-membrane transport,and one-carbon metabolism;and down-regulated DEGs were enriched in the positive regulation of cell proliferation.The survival curve analysis showed that 30 of the 87 genes were significantly associated with poor survival prognosis.GEPIA showed that 13 of the 30 genes were highly expressed in CRC tissues compared to normal tissues,among which MYC and FGFR3 markedly enriched in the CRC pathway.Conclusion This study identifies that MYC and FGFR3 are significantly up-regulated in CRC and closely associated with poor prognosis,suggesting that they may serve as potential prognostic markers and therapeutic targets for CRC patients.

Objective To develop and validate a transgenic mouse model enabling specific and inducible optogenetic activation of oligodendrocyte precursor cells(OPCs).Methods A conditional allele for the photosensitive opsin chicken opsin 5(cOpn5)(Rosa26-LSL-cOpn5)was generated using CRISPR/Cas9 technology.These mice were subsequently crossed with NG2-CreERT transgenic mice to produce NG2-CreERT;cOpn5 animals.In this model,tamoxifen administration induces Cre-mediated recombination,leading to specific expression of cOpn5 in NG2-positive OPCs.The specificity and efficiency of cOpn5 expression in OPCs were confirmed by immunofluorescent staining.Functional validation of light-induced OPC activation was performed by using calcium imaging in acute brain slices after stimulation with 470 nm blue light.Results Immunofluorescence analysis confirmed robust and specific expression of cOpn5 within NG2-positive OPCs in the brains of tamoxifen-treated NG2-CreERT;cOpn5 mice.Crucially,calcium imaging of acute brain slices from these mice demonstrated a significant increase in intracellular calcium levels in cOpn5-expressing OPCs upon stimulation with 470 nm blue light,indicating successful optogenetic activation.Conclusion We have successfully generated and validated a novel transgenic mouse model(NG2-CreERT;cOpn5)that permits specific and inducible optogenetic activation of OPCs.This model provides a novel tool for subsequent in vivo studies of the role and regulating mechanisms of OPCs in the central nervous system.

Objective To investigate the effects of edaravone-dexborneol combined with intravenous thrombolysis on cerebrovascular reserve capacity and inflammatory factors in patients with acute cerebral infarction.Methods From January 2023 to June 2024,100 patients diagnosed with acute cerebral infarction in our hospital were divided into research group(n=50)and conventional group(n=50)by random number table method.The conventional group received intravenous thrombolysis,while the research group was treated with edaravone-dexborneol in addition to intravenous thrombolysis.The efficacy was evaluated after 2 weeks of treatment;the neurological function scores(mRS and NIHSS),cerebrovascular reserve indicators[pulsatility index(PI),cerebrovascular reserve(CVR)],hemorheological indicators(platelet aggregation rate,red blood cell aggregation index),levels of inflammatory factors[matrix metalloproteinase(MMP)-9,monocyte chemoattractant protein(MCP)-1,intercellular adhesion molecule(ICAM)-1],and levels of neurological functional factors[neuron specific enolase(NSE),nerve growth factor(NGF),central nervous system specific protein(S100)β]before and after treatment were compared.Results After 2 weeks of treatment,the efficacy of the conventional group was 80.00％,the efficacy of the research group was 94.00％.And the therapeutic effect of research group was significantly higher than the conventional group(x2=4.332,P=0.037).After 4 weeks of treatment,the mRS score,NIHSS score,PI,platelet aggregation rate,red blood cell aggregation index,and serum levels of MCP-1,MMP-9,ICAM-1,NSE and S100β were significantly lower than those before treatment in the two groups,while the CVR and serum NGF levels were significantly higher than those before treatment(all P＜0.05).After 4 weeks of treatment,the mRS score,NIHSS score,PI,platelet aggregation rate,red blood cell aggregation index,and serum levels of MCP-1,MMP-9,ICAM-1,NSE and S100β were significantly lower in the research group than those in the conventional group(all P＜0.05),while the CVR and serum NGF level were significantly higher in the research group than those in the conventional group(all P＜0.05).Conclusion The combination of edaravone-dexborneol with intravenous thrombolysis can improve clinical efficacy,restore neurological function,enhance cerebrovascular reserve capacity,improve hemorheology,and reduce inflammatory factors in patients with acute cerebral infarction.

Objective:To summarize and analyze the clinical features of patients with inflammatory bowel disease (IBD) accompanied by axial spondyloarthritis (ax-SpA) .Methods:A descriptive case series study was conducted. Consecutive IBD patients with ax-SpA admitted to Peking Union Medical College Hospital from January 2012 to December 2023 were enrolled, and the clinical data were collected and analyzed descriptively.Results:A total of 21 IBD patients with ax-SpA were enrolled, including 14 males (66.7%) and 7 females (33.3%). The median age at IBD diagnosis was 29 (24, 42) years. Among them, 10 had ulcerative colitis (UC) and 11 had Crohn's disease (CD). In 11 patients (52.4%), ax-SpA was diagnosed before IBD, while in 7 patients (33.3%), IBD was diagnosed before ax-SpA; the remaining 3 patients (14.3%) were diagnosed simultaneously. Thirteen patients (61.9%) had other extraintestinal manifestations, with 12 involving mucocutaneous manifestations. Nineteen patients including 9 UC and 10 CD were followed up for a median duration of 34 (12, 57) months. Among UC patients, 5 (55.6%) were escalated from conventional therapy to biologics or small-molecule drugs, and 6 (66.7%) developed opportunistic infections. Among CD patients, 3 (30.0%) were escalated to biologic therapy, and 2 (20.0%) developed opportunistic infections. Three patients (15.8%) underwent intestinal resection surgery.Conclusions:IBD patients with ax-SpA are predominantly male, with a similar proportion of UC and CD. There is no clear sequential pattern in the diagnosis timing of IBD and ax-SpA. These patients often present with other extraintestinal manifestations of IBD, primarily mucocutaneous manifestations.

Objective To explore the abnormal expression of the MT-ND family in pan-cancers and its prognostic value.Methods Transcriptome expression and clinical data of 33 cancers were downloaded from the TCGA database,thereby analyzing the expression differences of the MT-ND family in tissuesof different types of cancers and normal tissues.The prognostic role of the MT-ND family in pan-cancers was explored by univariate Cox regression analysis and Kaplan-Meier survival analysis.Results The expression of the MT-ND family was upregulated in the kidney chromophobe,acute myeloid leukemia and thymoma,and downregulated in the remaining tumors.The expression of the MT-ND family was associated with the overall survival rate of different types of cancers.In addition,the MT-ND family were significantly correlated with the immune invasion subtypes,and were correlated with stromal cell invasion and tumor cell stemness to varying degrees.The expression of MT-ND4 was downregulated in brain lower grade glioma,which was a protective factor for prognosis;while the expression of MT-ND4 in thymoma was upregulated,which was a risk factor for prognosis.Conclusion Pan-cancer analysis has confirmed that the MT-ND family can predict the tumor prognosis,which provides new ideas and strategies for the precision treatment and prognostic management of cancer.

Objective To study the damage effect of high-voltage electric shock on skin based on metabolomics,analyze its metabolic differences,and explore its injury mechanism.Methods A total of 16 SPF C57BL/6J male mice were divided into the electric shock group(head skin received electric shock treatment)and control group(head skin received electric shock acoustic-optical stimulation),and the skin appearance after treatment of mice in the two groups was observed.The histopathological changes caused by electric shock were analyzed by HE staining,EVG staining and Masson staining.GC-MS and LC-MS metabonomics were used to analyze the changes of skin metabolism spectrum and tissue metabolites after electric shock exposure,and the differential metabolites were analyzed.The obtained differential metabolites were combined and KEGG enrichment analysis was conducted.Results After high-voltage electric shock,the skin of mice could be damaged to the dermis,and the epidermis was partially thickened,lifted and separated.The structure of skin appendages in the dermis was destroyed,with a large number of inflammatory cells infiltrating and obvious swelling,accompanied by congestion,which led to severe skin inflammatory reaction and impaired skin barrier function.Metabonomics analysis suggested that the metabolites changed after electric shock exposure.KEGG enrichment analysis showed that electric shock significantly affected the central carbon metabolism pathway of cancer,pentose phosphate pathway,purine metabolism,glycine,serine and threonine metabolism processes,amino acid tRNA biosynthesis mechanism,glycerophospholipid metabolism pathway,pyrimidine metabolism pattern,glycolysis/gluconeogenesis,alanine metabolism process,glucagon signal pathway and so on.Conclusion High voltage electric shock can cause deep skin damage,disturb its energy metabolism and amino acid metabolism,and seriously interfere with its antioxidant and DNA repair system functions.

The contents of the female inguinal hernia include abdominal organs such as ovaries and fallopian tubes, and most of these are the result of sliding hernias. However, it is worth noting for surgeons specialized in hernia and abdominal wall surgery that there is a rare clinical diagnosis of hernia uterine inguinale, which is commonly seen in the Müllerian anomaly. Combined with relevant research progress at home and abroad, as well as the clinical experience in the diagnosis and treatment of patients with inguinal uterine hernia caused by Müllerian duct anomaly, the authors systematically introduce the clinical manifes-tations, key diagnosis and treatment points of female Müllerian duct anomaly in the inguinal region.

Cytokeratin 19 fragment antigen 21-1(CYFRA21-1)is a new biomarker which has received much attention in recent years for cancer screening,and has shown great potentials for screening and diagnosis of various cancers,especially non-small cell lung cancer.CYFRA21-1 level in human serum has important clinical significance in the diagnosis,prognosis and treatment of lung cancer.Recently,a variety of detection techniques have been established to effectively enrich the detection technology system of CYFRA21-1,such as enzyme-linked immunosorbent assay,chemiluminescence,fluorescence,immunochromatography,electrochemical method,and surface enhanced Raman spectroscopy,etc.These techniques provide technical support for early diagnosis of lung cancer.However,the research progress of CYFRA21-1 detection methods is rarely reported.In this paper,CYFRA21-1 and its clinical significance were briefly introduced,and the progress of detection technology in recent ten years was reviewed,which was expected to provide reference for developing more sensitive,accurate,fast and convenient detection methods.

Objective:To summarize and analyze the clinical features of patients with inflammatory bowel disease (IBD) accompanied by axial spondyloarthritis (ax-SpA) .Methods:A descriptive case series study was conducted. Consecutive IBD patients with ax-SpA admitted to Peking Union Medical College Hospital from January 2012 to December 2023 were enrolled, and the clinical data were collected and analyzed descriptively.Results:A total of 21 IBD patients with ax-SpA were enrolled, including 14 males (66.7%) and 7 females (33.3%). The median age at IBD diagnosis was 29 (24, 42) years. Among them, 10 had ulcerative colitis (UC) and 11 had Crohn's disease (CD). In 11 patients (52.4%), ax-SpA was diagnosed before IBD, while in 7 patients (33.3%), IBD was diagnosed before ax-SpA; the remaining 3 patients (14.3%) were diagnosed simultaneously. Thirteen patients (61.9%) had other extraintestinal manifestations, with 12 involving mucocutaneous manifestations. Nineteen patients including 9 UC and 10 CD were followed up for a median duration of 34 (12, 57) months. Among UC patients, 5 (55.6%) were escalated from conventional therapy to biologics or small-molecule drugs, and 6 (66.7%) developed opportunistic infections. Among CD patients, 3 (30.0%) were escalated to biologic therapy, and 2 (20.0%) developed opportunistic infections. Three patients (15.8%) underwent intestinal resection surgery.Conclusions:IBD patients with ax-SpA are predominantly male, with a similar proportion of UC and CD. There is no clear sequential pattern in the diagnosis timing of IBD and ax-SpA. These patients often present with other extraintestinal manifestations of IBD, primarily mucocutaneous manifestations.

Objective To explore the abnormal expression of the MT-ND family in pan-cancers and its prognostic value.Methods Transcriptome expression and clinical data of 33 cancers were downloaded from the TCGA database,thereby analyzing the expression differences of the MT-ND family in tissuesof different types of cancers and normal tissues.The prognostic role of the MT-ND family in pan-cancers was explored by univariate Cox regression analysis and Kaplan-Meier survival analysis.Results The expression of the MT-ND family was upregulated in the kidney chromophobe,acute myeloid leukemia and thymoma,and downregulated in the remaining tumors.The expression of the MT-ND family was associated with the overall survival rate of different types of cancers.In addition,the MT-ND family were significantly correlated with the immune invasion subtypes,and were correlated with stromal cell invasion and tumor cell stemness to varying degrees.The expression of MT-ND4 was downregulated in brain lower grade glioma,which was a protective factor for prognosis;while the expression of MT-ND4 in thymoma was upregulated,which was a risk factor for prognosis.Conclusion Pan-cancer analysis has confirmed that the MT-ND family can predict the tumor prognosis,which provides new ideas and strategies for the precision treatment and prognostic management of cancer.