ObjectiveTo explore the protective effect of glucocorticoid-induced transcription factor 1 （GLCCI1） on cognitive dysfunction in diabetic mice and its mechanism. MethodsTwenty-four C57BL/6J mice were randomly divided into 4 groups， namely Control， DM， DM+AAV-Glcci1， and DM+AAV-NC. The Control group was intraperitoneally injected with saline， while the other groups were all injected with streptozotocin （STZ）. Two weeks after successful modeling， the DM+AAV-Glcci1 group was brain stereotactic injected with Glcci1 overexpressing adeno-associated virus， and the DM+AAV-NC group was stereoscopically injected with the control virus. After 12 weeks， the Morris water maze test was used to evaluate the learning and memory abilities of mice in each group. Subsequently， the localized expression of GLCCI1 in the hippocampus were determined by immunofluorescence and immunohistochemistry experiments. The myelin morphology in the hippocampus was observed by LFB staining， the neuronal morphology was observed by Nissl staining， and the myelin-related proteins MBP and CNPase were stained by immunohistochemistry. Molecular docking was used to predict the interaction between GLCCI1 and HSPA5. The expression of endoplasmic reticulum stress-related proteins was detected by Western blot. ResultsThe results of the behavioral experiment showed that compared with the mice in the Control group， DM mice exhibited obvious cognitive dysfunction behaviors （P＜0.000 1）， and the learning and memory abilities of mice improved after overexpression of Glcci1 （P=0.000 7）. The results of immunofluorescence and immunohistochemistry showed that GLCCI1 was expressed in hippocampal neuron cells. Compared with Control mice， the expression level of GLCCI1 in DM mice was significantly downregulated （P＜0.000 1）. The molecular docking results revealed that GLCCI1 interacts with HSPA5. The Western blot results indicated that， compared with the Control group， the expression levels of endoplasmic reticulum stress-related proteins HSPA5 （P＜0.000 1）， ATF4 （P＜0.000 1）， ATF6 （P=0.001 1）， and p-ELF2α/elF2α （P=0.000 1） in the DM group were significantly increased； Compared with the DM group， the expression of the corresponding protein HSPA5 （P＜0.000 1）， ATF4 （P＜0.000 1）， ATF6 （P=0.000 2）， and p-ELF2α/elF2α （P=0.000 1） was significantly down-regulated after overexpression of Glcci1. LFB staining showed that compared with the Control group， the myelin integrity of DM mice decreased significantly （P=0.010 3）， the expressions of myelin-related proteins MBP and CNPase decreased significantly （P=0.000 4， P=0.000 2）， and Nissl staining observed disordered neuronal arrangement. Compared with the mice in the DM group， the myelin integrity in the hippocampal region significantly increased after overexpression of Glcci1 （P=0.000 3）， the expressions of myelin-related proteins MBP and CNPase significantly increased （P=0.001 4， P=0.000 1）， and the ordered arrangement of neurons was observed by Nissl staining. ConclusionThe down-regulation of GLCCI1 expression in hippocampal neurons promotes demyelination of hippocampal neurons and thereby induces diabetic cognitive dysfunction. The specific mechanism may be related to endoplasmic reticulum stress.

Amantadine(AMD)residue can accumulate in organisms through the food chain and cause serious harm to human body.AMD can specifically bind to AMD specific aptamer and cause its conformation to change from a random single strand to a stem-loop structure.To avoid the influence of excess nucleotides on binding of aptamer to AMD,the truncation of the AMD original aptamer J was optimized by retaining an appropriate stem-loop structure,and a new type of truncation aptamers was developed in this work.By comparing the truncated aptamer with the original aptamer,it was found that the truncated aptamer J-7 had better affinity and specificity with AMD.The detection limit of AMD was 0.11 ng/mL by using J-7 as specific recognition element and molybdenum disulfide nanosheet(MoS2Ns)as signal amplification element.The developed method base on truncated aptamer J-7 was used for detection of AMD in milk,yogurt and SD rat serum samples for the first time with recoveries of 86.6%-108.2%.This study provided a reference for truncating other long sequence aptamers and provided a more sensitive detection method for monitoring AMD residues in food.

Objective:To evaluate the effects of pulmonary embolism response team (PERT) on the quality of care and clinical outcomes in patients with acute pulmonary embolism.Methods:This was a single-center retrospective cohort study. Patients with acute pulmonary embolism treated in Beijing Anzhen Hospital Affiliated to Capital Medical University from July 5, 2016 to July 4, 2018 were enrolled. Patients with acute pulmonary embolism who had traditional care from July 5, 2016 to July 4, 2017 (before the implementation of PERT) were classified as PERT pre-intervention group. Patients with acute pulmonary embolism who started PERT care from July 5, 2017 to July 4, 2018 were divided into the PERT intervention group. The diagnosis and treatment information of patients was collected through the electronic medical record system, and the quality of care (time from visit to hospitalization, time from hospitalization to anticoagulation initiation, time from visit to definitive diagnosis, total hospital stay, time in intensive care unit (ICU), hospitalization cost) and clinical outcomes (in-hospital mortality and incidence of bleeding) were compared between the two groups.Results:A total of 210 patients with acute pulmonary embolism, aged (63.3±13.7) years old, with 102 (48.6%) female patients were included. There were 108 cases in PERT pre-intervention group and 102 cases in PERT intervention group. (1) Quality of diagnosis and treatment: there was a statistical significance between the two groups in the distribution of time from diagnosis to definitive diagnosis ( P=0.002). Among them, the rate of completion of diagnosis within 24 hours after PERT intervention was higher than that before PERT intervention (80.4% (45/56) vs. 50.0% (34/68), P<0.001). The time from treatment to hospitalization was shorter than that before PERT intervention (180.0 (60.0, 645.0) min vs. 900.0 (298.0, 1 806.5) min, P<0.001). The total length of hospital stay was less than that before PERT intervention (12 (10, 14) d vs. 14 (11, 16) d, P=0.001). There was no statistical significance in the time from hospitalization to anticoagulant therapy, the length of ICU stay and hospitalization cost between the two groups (all P>0.05). (2) Clinical outcomes during hospitalization: There was no statistical significance in the incidence of hemorrhage and mortality between the two groups during hospitalization (both P>0.05). Conclusion:PERT has improved the efficiency of diagnosis and treatment of patients with acute pulmonary embolism and significantly shortened the total hospital stay, but its impact on clinical outcomes still needs further study.

Non-alcoholic fatty liver disease(NAFLD)has become the most important cause of chronic liver disease,and its pathogenic mechanism is very complex.microRNA(miRNA)are widely distributed non-cod-ing RNA.miRNA play an important regulatory role in the pathogenesis and progression of various chronic liv-er diseases,including NAFLD,and may even be used as diagnostic indicators or even therapeutic targets for liver diseases.As a non-invasive biological indicator,a large number of research data show that miRNA has important clinical value in the diagnosis and prognosis of NAFLD.This article provides a review of the re-search progress related to the pathogenic mechanism and clinical diagnostic value of miRNA in NAFLD.

Objective The aim of this study was to investigate the effects of LncRNA OTUD6B-AS1 on the proliferation,mi-gration and invasion of lung adenocarcinoma A549 cells.Methods Lung adenocarcinoma A549 cell line was cultured in vitro,and transient transfection of OTUD6B-AS1 and empty plasmid group were used as the control group.Overexpression and control cell mod-els were constructed,and divided into OTUD6B-AS1 overexpression group and empty plasmid group(NC group).The cell model was divided into the empty plasmid group(NC group)and OTUD6B-AS1 overexpression group.The transfection efficiency of OTUD6B-AS1 mRNA was verified through qRT-PCR.The CCK-8 experiment was used to detect the effect of OTUD6B-AS1 on the prolifera-tion activity of lung adenocarcinoma cells,and the Transwell assay was used to detect the effect of OTUD6B-AS1 on the migration and invasion ability of lung adenocarcinoma cells.Results Compared to the NC group,the overexpression OTUD6B-AS1 group had a sig-nificant increase in the expression of OTUD6B-AS1(P<0.05).The CCK-8 assay results showed that the proliferation activity of A549 cells in the OTUD6B-AS1 overexpression group was significantly reduced compared to the NC group(P<0.05).The results of the Transwell assay showed that the OTUD6B-AS1 overexpression group had significantly lower cell migration and invasion abilities than the NC group(P<0.05).Conclusion Overexpression lncRNA OTUD6B-AS1 in lung adenocarcinoma A549 cells can signifi-cantly inhibit the proliferation,migration,and invasion ability of A549 cells.

Objective To explore the prognostic value of hemoglobin-albumin-lymphocyte-platelet(HALP)score and geriatric nutritional risk index(GNRI)in elderly patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD).Methods A retrospective analysis was conducted on the clinical and follow-up data of 228 elderly AECOPD patients who were admitted to the De-partment of Respiratory and Critical Care Medicine,the Second Affiliated Hospital of Zhengzhou University from September 2018 to March 2022.After discharge,the patients received 1-year follow-up,and were divided into two groups based on their prognosis:good progno-sis group(n=130)and poor prognosis group(n=98),and the data were compared between the two groups.The predictive effect of HALP score and GNRI on poor prognosis in elderly AECOPD patients was analyzed by receiver operating characteristic(ROC)curve.The correlation analysis was used to investigate the relationship between HALP score and GNRI and C-reactive protein(CRP),interleukin-6(IL-6),procalcitonin(PCT),NRS2002,length of hospital stay and prognostic outcomes.Results The levels of body mass index,lymphocyte count,hemoglobin,albumin,GNRI,and HALP score in the good prognosis group were higher than those in the poor prognosis group,and the age,length of hospitalization,NRS2002,neutrophil count,CRP,IL-6,PCT,sputum culture,chest CT combined with inflammation were lower than those in the poor prognosis group,and the differences were statistically significant(P＜0.05).The results of ROC curves indicate that the area under the curve(AUC)of HALP score and GNRI were 0.868 and 0.682 respectively.The results of correlation analysis showed that in elderly patients with AECOPD,both HALP score and GNRI were negatively correlated with CRP,PCT,NRS2002,length of hospitalization,prognostic outcomes,sputum culture,and chest CT with inflammation(P＜0.05),and GNRI was also negatively correlated with IL-6(P＜0.05).Conclusion HALP score and GNRI can predict the prognostic outcome of elderly pa-tients with AECOPD.

Background and purpose:Colorectal cancer(CRC)is one of the major malignant tumors threatening human health worldwide,with long-term high incidence and mortality rate.Potassium channel modulatory factor 1(KCMF1)is a member of the E3 ubiquitin ligase family.It binds to target proteins through the RING domain and participates in the regulation of a variety of biological processes in vivo.However,the function of KCMF1 in CRC remains unclear.This study aimed to investigate the expression level of E3 ubiquitin ligase KCMF1 in colorectal tumor,and to explore the effects of KCMF1 on the proliferation of CRC cells and its underlying molecular mechanism.Methods:The The Cancer Genome Atlas(TCGA)and Genotype-Tissue Expression(GTEx)databases were used to analyze the expression level of KCMF1 in CRC tissues and adjacent tissues and the association between the KCMF1 expression and the prognosis of CRC patients.Furthermore,immunohistochemical staining was performed to detect the protein level of KCMF1 in 90 paired human CRC tissues and adjacent non-tumor tissues.Lentiviral shRNA delivery system was employed to specifically target the KCMF1 gene(shKCMF1)in HCT116 and HCT15 CRC cell lines.The effects of KCMF1 knockdown on cell proliferation,apoptosis and cell cycle distribution were assessed by methyl thiazoyl terazolium(MTT)assay,colony formation assay,Western blot and flow cytometry.Changes in the transcriptional profile in HCT116 cells upon KCMF1 knockdown were identified by RNA sequencing(RNA-Seq),and the affected signaling pathways were evaluated by bioinformatics analysis.Real-time fluorescence quantitative polymerase chain reaction(RTFQ-PCR),Western blot,luciferase reporter assay and cell immunofluorescence assay were utilized to validate the alteration of the affected signaling pathway.Results:The TCGA and GTEx databases and IHC results showed that the mRNA and protein expression levels of KCMF1 in CRC tissues were significantly upregulated compared with adjacent tissues(P＜0.01).KCMF1 expression level was negatively correlated with the survival time of patients with CRC(P＜0.01),and was positively associated with CRC clinical stage(P＜0.05).Compared with control cells,KCMF1 knockdown significantly inhibited the proliferation of HCT116 and HCT15 cells(P＜0.001),induced cell apoptosis(P＜0.001),and led to cell cycle arrest in G1 phase(P＜0.01).RNA-Seq analysis showed that KCMF1 was involved in the regulation of several signaling pathways,including nuclear factor-κB(NF-κB)signaling pathway.KCMF1 knockdown reduced the transcription levels of the target genes of NF-κB signaling pathway,including BCL-XL,XIAP and CIAP(P＜0.05),and suppressed the expression of phosphorylated p65 and nuclear translocation of p65(P＜0.01).Meanwhile,the activity of NF-κB reporter was reduced in tumor cells upon KCMF1 knockdown(P＜0.01).Conclusion:The expression of KCMF1 is significantly upregulated in human CRC tissues and positively associated with advanced clinical stage and poor prognosis.KCMF1 may promote the proliferation of CRC cells by activating the NF-κB signaling pathway.KCMF1 may be a potential new therapeutic target for CRC.

This study was aimed at comparing performance differences among three metagenomic sequencing platforms,MGISEQ-2000,Illumina NextSeq 2000,and Ion GeneStudio S5 Plus,to optimize the sequencing process for trace samples.The three sequencing platforms were used to perform high-throughput sequencing on DNA standards and simulated samples.Through analysis of the quality of raw data and microbial detection capabilities,systematic differences among platforms were compared.The sequencing results were optimized for trace samples by incorporation of exogenous nucleic acids during the li-brary preparation process.In terms of data output per batch and base quality,MGISEQ-2000 surpassed the other two plat-forms.Illumina NextSeq 2000 had the lowest proportion of duplicate reads,whereas Ion GeneStudio S5 Plus had the highest proportion,and significant differences were observed across platforms(P＜0.001).In sequencing uniformity,MGISEQ-2000 and Illumina NextSeq 2000 were superior to Ion GeneStudio S5 Plus.MGISEQ-2000 provided a substantial advantage in microbial detection capability(P＜0.001),but the advantage diminished with decreasing bacterial fluid concentration.Ion GeneStudio S5 Plus had the shortest duration for single-batch sequencing.Moreo-ver,for trace samples with DNA content ≤0.05 ng,the experi-mental group(with added exogenous nucleic acids)achieved a higher number of reads than the control group(without exogenous nucleic acids),with a 11.09±8.03 fold increase.In conclu-sion,the different sequencing platforms each had advantages and disadvantages,thus allowing researchers to choose the appro-priate platform according to specific needs.Furthermore,the addition of exogenous nucleic acids improved the microorganism detection efficiency,and provided better support for subsequent diagnosis and evaluation of results.

Objective:To analyze and explore the effects of Huayu Jiedu Decoction on the malignant biological characteristics of multiple myeloma(MM)cells and its molecular mechanism,so as to provide experimental basis and theoretical basis for the alternative therapy of anti-MM in traditional Chinese medicine.Methods:Different concentrations of Huayu Jiedu Decoction were used to intervene myeloma U266 cells.The changes of cell proliferation activity were detected by CCK-8 assay,apoptosis was detected by Annexin V/PI double staining flow cytometry,and apoptosis and protein expression of related signaling pathways were detected by Western blot.Real-time quantitative PCR was used to detect mRNA expression changes of high mobility group protein B1(HMGB1),CXC chemokine receptor 4(CXCR4)and interleukin-6(IL-6).Results:Huayu Jiedu Decoction inhibited the proliferative activity of U266 cells and induced their apoptosis in a concentration and time dependent manner(r=-0.713,r=-0.827).After treatment with Huayu Jiedu Decoction for 48 h,the expressions of anti-apoptotic protein Bcl-2 and survivin were down-regulated,while the expression of pro-apoptotic protein Bax was up-regulated,and the phosphorylation level of TLR4/NF-κB signaling pathway was inhibited.After intervention of Huayu Jiedu decoction,the expressions of HMGB1 and IL-6 mRNA were significantly decreased,while the expression of CXCR4 was not significantly decreased.Conclusion:Huayu Jiedu Decoction can inhibit the proliferative activity of U266 cells and induce programmed death.Its molecular mechanism may be related to regulating the expression of apoptotic proteins,inhibiting the activation of TLR4/NF-κB pathway and down-regulating the expression of HMGB1 and IL-6 mRNA.

Objective:To investigate the effects of Curcumol on the malignant biological characteristics of acute myeloid leukemia (AML)cells and its molecular mechanism,and to provide theoretical and experimental evidence for the anti-leukemia treatment of traditional Chinese medicine.Methods:After the AML cell lines HL-60 and KG-1 cells were treated different concentrations of with Curcumol.The proliferation activity of cells was detected by CCK-8 method,and the expression changes of apoptotic proteins and PI3 K/AKT signaling pathway proteins were detected by Western blot. Real-time quantitative fluorescence polymerase chain reaction (RT-qPCR ) was used to detect the expression of Caspase family mRNA.Results:Curcumol could inhibit the proliferation and induce apoptosis of HL-60 and KG-1 cells,promote apoptosis by up-regulating the expression of Bax and down-regulating the expression of Bcl-2 protein (P<0.05).When Curcumol interferes with HL-60 and KG-1 cells,it can also induce programmed cell death of AML by inhibiting PI3 K/AKT signaling pathway.In addition,after the intervention of Curcumol,the expression of Caspase 3,Caspase 6,Caspase 8 and Caspase 9 were up-regulated in HL-60 cells (P<0.05 ),the expression of Caspase 3,Caspase 8 and Caspase 9 were significantly up-regulated in KG-1 cells (P<0.01),while the expression of Caspase 6 was weakly affected (P<0.05 ),but low concentration of Curcumol (<60 μg/ml)had no effect on the expression of Caspase 6 in KG-1 cells (P>0.05).Conclusion:Curcumol may mediate the programmed death of AML cells by inhibiting the PI3K/AKT signaling pathway,affecting the expression of Bcl-2 family proteins,and promoting the activation of core members of Caspase family,so as to play an anti-leukemia role.