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Objective:To investigate the effect and mechanisms of mitochondrial dynamic-related protein 1(Drp1)on the in-flammatory response after intracerebral hemorrhage(ICH)in mice.Methods:Western blot was used to detect the expressions of Drp1 and phosphorylated Drp1(p-Drp1)in brain tissues after ICH,and the optimal concentration of selective Drp1 inhibitor(Mdivi-1)were screened.The mice were randomly divided into sham group,ICH group,ICH+solvent control group(ICH+Vehicle group)and ICH+Mdivi-1 group.The neurological function was evaluated by mNSS,the content of brain water was measured by wet-dry weight method,HE and Nissl staining were used to observe the morphological changes of brain tissues,neutrophil infiltration were observed by MPO staining,and the expression of inflammatory cytokines(IL-6,TNF-α)and mitochondrial membrane marker proteins TOM20,COX4Ⅰ1 were detected by Western blot.Results:Compared with sham group,the expression of p-Drp1 was significantly increased at 12 h after ICH(P<0.01).Compared with ICH+Vehicle group,the neurological function score(P<0.01)and brain water content(P<0.05)of ICH+Mdivi-1 group were increased,the protein expressions of IL-6 and TNF-α and the number of MPO positive cells around hematoma in ICH+Mdivi-1 group were significantly increased(P<0.05),and the expressions of mitochondrial membrane proteins TOM20 and COX4Ⅰ1 in ICH+Mdivi-1 group were significantly elevated(P<0.01).Conclusion:Inhibition of Drp1 can inhibit mito-chondrial division and aggravate inflammatory injury after ICH in mice.Therefore,Drp1 may reduce the inflammation after ICH.
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Objective:To identify key genes and their potential biological mechanisms in the progression of non-alcoholic fatty liver disease (NAFLD) using bioinformatics technology.Methods:Genes differentially expressed in simple non-alcoholic fatty liver disease (NAFL) and non-alcoholic steatohepatitis (NASH) were analyzed by integrating NAFLD-related sequencing datasets GSE135251 and GSE167523 from the Gene Expression Omnibus (GEO) datebase. Gene Ontology (GO) functional enrichment analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) and Reactome signaling pathway analysis were performed. Key genes were identified by STRING database and Cytoscape3.7.2 software, and the expression of key genes under different fibrosis grades and activity scores was observed. In addition, the expression of key genes in different cell clusters was observed based on the single-cell RNA-seq dataset of NAFLD mice.Results:Bioinformatics methods were used to obtain 97 common differential genes in NAFLD from two datasets. GO functional enrichment analysis was mainly performed in Extracellular Matrix (ECM) tissues. The main signaling pathway is ECM-receptor interaction. Five key genes were identified based on PPI network and Cytoscape software: COL1A1, THBS2, CXCL8, THY1 and LOXL1. The expression of key genes was significantly positively correlated with fibrosis grade and activity score, indicating that they were closely related to the progression of NAFLD. These key genes are highly expressed in hepatic stellate cells (HSCs) and natural killer/T cells (NK/T cells).Conclusion:In this study, bioinformatics technology was used to identify five key genes that may be involved in the NAFL-NASH transformation, suggesting that the ECM-receptor interaction signaling pathway may be a key molecular mechanism of NAFLD disease progression.
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Objective:To evaluate the effects of brain-computer interface training on extremity function for stroke patients.Methods:Cochrane, EBSCO, PubMed, EMbase, Web of Science, JBI, MEDLINE, RNAO, Nursing Consult, CINAHL, CNKI, WanFang and VIP were searched to collect randomized controlled trials of brain-computer interface training on stroke patients, after quality evaluation and data extraction by two researchers, statistical processing was performed by RevMan5.3 software.Results:Twelve randomized controlled trials and 347 patients were included. The results showed that brain-computer interface training could improve the patients' limb motor function (mean difference value was 5.00, 95% confidence interval was 3.50-6.49, Z value was 6.55, P<0.01) and upper limb action function (mean difference value was 9.66, 95% confidence interval was 3.74-15.59, Z value was 3.20, P<0.01), enhanced the myodynamia (standardized mean difference was 0.91, 95% confidence interval was 0.49-1.32, Z value was 4.23, P<0.01) and activities of daily living (standardized mean difference was 0.84, 95% confidence interval was 0.42-1.26, Z value was 3.89, P<0.01], but had no significant effect on myospasm (mean difference value was -0.08, 95% confidence interval was -0.47-0.31, Z value was 0.39, P>0.05). Conclusions:Brain-computer interface training can improve limb motor function, action, myodynamia and activities of daily living for stroke patients, but have no significant effect on myospasm.
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Objective:To evaluate the effect of high intensity interval training on cancer patients.Methods:Web of Science, EBSCO, PubMed, Ovid, EMbase, Cochrane Library, CBM, CNKI and Wanfang database were searched for randomized controlled trials of the effect of high intensity interval training on cancer patients, RevMan5.3 software was used for analysis.Results:Eleven articles with a population of 614 were included in the analysis, which involved 323 cases of the intervention group and 291 cases of the control group. The analysis showed that high intensity interval training could improve the total quality of life ( SMD values were 0.40, 95% CI 0.14-0.65, P<0.01) and peak oxygen uptake ( MD values were 3.00, 95% CI 2.19-3.80, P<0.01) of cancer patients, and reduce carotid intima-media thickness ( MD values were -0.06, 95% CI-0.08--0.03, P<0.01), but did not reduce the high-sensitivity C-reactive protein ( MD values were -0.61, 95% CI-1.23-0.01, P>0.05) and body weight ( MD values were 0.16, 95% CI-3.19-3.51, P>0.05). Conclusions:High intensity interval training has a positive impact on quality of life, cardiopulmonary function and carotid intima-media thickness with cancer patients, but has no significant effects on high-sensitivity C-reactive protein and body weight.
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Objective:To determine national trends for breast conserving surgery and to explore the factors affecting the scale of breast conserving surgery in China.Methods:A questionnaire survey was mailed to 110 hospitals with an year′s volume of more than 200 breast cancer surgeries in each center in China concerning hospital variations and percentage of breast conserving surgery.Results:The overall proportion of breast conserving surgery is 21.9% for operable breast cancer in China. There is a significant positive correlation between local Gross Domestic Product (GDP) and the rate of breast conserving surgery ( P=0.001). Hospitals with higher annual operation volume have higher breast-conserving ratios( P=0.042). Compared with non-teaching hospitals, more patients with stage I breast cancer underwent breast conserving surgery in teaching hospitals ( P=0.021). After breast-conserving surgery, the proportion of positive margins needing reoperation had a lower percentage and in cancer hospitals it was the lowest ( P=0.023). The method of pathological evaluation and the remedy strategy for positive margin was not related to per capita GDP and hospital category ( P>0.05). Conclusions:This survey demonstrates the current practices of breast conserving surgery in China. Local GDP, hospital category and tumor stage were factors influencing breast conserving surgery. Breast conserving surgery in China is still at a low level compared with developed countries.
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Objective To evaluate the efficacy of Disposcope endoscope for tracheal intubation in patients with difficult glottis exposure.Methods Sixty adult patients of both sexes,aged 22-68 yr,scheduled for elective oro-tracheal intubation under general anesthesia,whose glottis was not visible under Macintosh laryngoscope (grade Ⅲ or according to Cormach-Lehane Grading of laryngoscopic view),were randomized into 2 groups (n =30 each) using a random number table:group Macintosh laryngoscope-assisted Disposcope endoscope (group DM) and group Disposcope endoscope (group D).The glottis exposure condition and time,intubation condition and time,assisted lifting mandible,laryngeal mucosa bleeding and postoperative sore throat and hoarseness were recorded.Results The success rate of intubation at second attempt achieved 100％ in the two groups.Compared with group DM,the incidence of assisted lifting mandible was decreased,and no significant changes were found in the success rate of glottis exposure,glottis exposure time,intubation time,success rate of intubation at first attempt,incidence of laryngeal mucosa bleeding,and postoperative sore throat and hoarseness in group D.Conclusion Disposcope endoscope can improve the condition for tracheal intubation significantly after lifting mandible in patients with difficult glottis exposure.