RESUMO
Background: Heart failure (HF) is a complex clinical syndrome characterized by the inability to match cardiac output with metabolic needs. Research on regulatory mechanism of fibrosis-related genes in patients with HF is very limited. In order to understand the mechanism of fibrosis in the development and progression of HF, fibrosis -related hub genes in HF are screened and verified. Methods: RNA sequencing data was obtained from the Gene Expression Omnibus (GEO) cohorts to identify differentially expressed genes (DEGs). Thereafter, fibrosis-related genes were obtained from the GSEA database and that associated with HF were screened out. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analysis was carried out to analyze the biological function of fibrosis-related DEGs. The protein-protein interaction (PPI) network of hub genes was constructed via the STRING database. Moreover, the diagnostic value of hub genes for HF was confirmed using ROC curves and expression analysis. Finally, quantitative real time PCR was used to detect the expression levels of mRNAs. Results: A total of 3, 469 DEGs were identified closely related to HF, and 1, 187 fibrosis-related DEGs were obtained and analyzed for GO and KEGG enrichment. The enrichment results of fibrosis-related DEGs were consistent with that of DEGs. A total of 10 hub genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3, CXCL8, CCL2, IL6, IL1ß) were selected via the PPI network. Receiver operating characteristic curve analysis was estimated in the test cohort, and 6 genes (PPARG, KRAS, JUN, IL10, TLR4, STAT3) with AUC more than 0.7 were identified as diagnosis genes. Moreover, miRNA-mRNA and TF-mRNA regulatory networks were constructed. Finally, quantitative real time PCR revealed these 6 genes may be used as the potential diagnostic biomarkers of HF. Conclusion: In this study, 10 fibrosis-related hub genes in the HF were identified and 6 of them were demonstrated as potential diagnostic biomarkers for HF.
RESUMO
OBJECTIVE: We aimed to explore the relationship between neutrophil-to-lymphocyte ratio (NLR) at three timepoints and prognosis of patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS) undergoing elective percutaneous coronary intervention (PCI) within 1 year of PCI. METHODS: This retrospective study enrolled 231 patients with NSTE-ACS who received PCI and were followed for 1 year after PCI. The study population was divided into major adverse cardiovascular and cerebrovascular events (MACE) and non-MACE groups. RESULTS: In total, 214 patients completed the 1-year follow-up; 32 patients (15.0%) had MACE and 182 (85.0%) had no MACE. The MACE and non-MACE groups differed significantly in age, preoperative neutrophil count, preoperative and postoperative NLR, proportion of three-vessel lesion disease, preoperative lymphocyte count, postoperative lymphocyte count within 24 hours, postoperative lymphocyte count over 24 hours, and left ventricular ejection fraction (LVEF). Multivariate logistic regression analysis showed that preoperative NLR, postoperative NLR within 24 hours, age, and LVEF values were independent risk factors for MACE in patients with NSTE-ACS after elective PCI. CONCLUSION: Compared with preoperative NLR, postoperative NLR (within 24 hours) may have a stronger ability to predict the occurrence of MACE in NSTE-ACS patients within 1 year after elective PCI.