简介:摘要目的筛查COPD合并OSAHS的患病率,通过单纯COPD和重叠综合征的各项参数对比,探讨重叠综合征对机体的影响;对重叠综合征患者给予无创呼吸机治疗,探讨无创呼吸机在重叠综合征中的临床应用价值。方法入组确诊COPD患者52人,进行多导睡眠监测,确诊合并OSAHS17人。将患者分成单纯COPD组和重叠综合征组,二组患者均进行肺功能、血气分析及症状评分;重叠综合征组患者分成呼吸机治疗组7人和非呼吸机治疗组10人,观察二组病人症状、血气分析结果。结论重叠综合征患者较单纯COPD患者存在更严重的低氧血症及高碳酸血症,肺功能损伤更严重,重叠综合征合并高血压、冠心病、脑血管疾病的比例明显高于单纯COPD组;无创呼吸机可明显改善重叠综合征患者的通气功能。
简介:AbstractBackground:The global prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing. The pathogenesis of NAFLD is multifaceted, and the underlying mechanisms are elusive. We conducted data mining analysis to gain a better insight into the disease and to identify the hub genes associated with the progression of NAFLD.Methods:The dataset GSE49541, containing the profile of 40 samples representing mild stages of NAFLD and 32 samples representing advanced stages of NAFLD, was acquired from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were identified using the R programming language. The Database for Annotation, Visualization and Integrated Discovery (DAVID) online tool and Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database were used to perform the enrichment analysis and construct protein-protein interaction (PPI) networks, respectively. Subsequently, transcription factor networks and key modules were identified. The hub genes were validated in a mice model of high fat diet (HFD)-induced NAFLD and in cultured HepG2 cells by real-time quantitative PCR.Results:Based on the GSE49541 dataset, 57 DEGs were selected and enriched in chemokine activity and cellular component, including the extracellular region. Twelve transcription factors associated with DEGs were indicated from PPI analysis. Upregulated expression of five hub genes (SOX9, CCL20, CXCL1, CD24, and CHST4), which were identified from the dataset, was also observed in the livers of HFD-induced NAFLD mice and in HepG2 cells exposed to palmitic acid or advanced glycation end products.Conclusion:The hub genes SOX9, CCL20, CXCL1, CD24, and CHST4 are involved in the aggravation of NAFLD. Our results offer new insights into the underlying mechanism of NAFLD progression.