• 1. Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
  • 2. Department of Geriatrics and Neurology, West China School of Public Health and West China Forth Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
WU Xintong, Email: 36853839@qq.com
Export PDF Favorites Scan Get Citation

Objective To conduct a bioinformatics analysis of gene expression profiles in frontal lobe of patients with Parkinson disease (PD), in order to explore the potential mechanism related to depression in PD.Methods All the bioinformatics data before March 20th 2019 were acquired from Gene Expression Omnibus (GEO) database, using " Parkinson disease” as the key word. The species was limited to human (Homo sapiens), and the detective method was limited to expression profiling by array. ImgGEO (Integrative Gene Expression Meta-Analysis from GEO database), DAVID (the Database for Annotation, Visualization and Integrated Discovery), STRING and Cytoscape 3.6.1 software were utilized for data analysis.Results Totally, 45 samples (24 PD cases and 21 healthy controls) were obtained from 2 datasets. We identified 236 differentially expressed genes (DEGs) in the post-mortem frontal lobe between PD cases and healthy controls, in which 146 genes were up-regulated and 90 genes were down-regulated. Based on Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis, the DEGs were mainly enriched in the structures of postsynaptic membrane, cell membrane component, postsynaptic membrane dense area, and myelin sheath, and were involved in the occurrence of PD, depression, and other diseases. These genes were involved in the biological processes of dopaminergic, glutamate-nergic, GABA-nergic synapses, and some other synapses, as well as several signaling pathways (e.g. mitogen- activated protein kinase signal pathway, p53 signal pathway, and Wnt signal pathway), which were associated with PD and depression pathogenesis. Besides, we found that NFKBIA, NRXN1, and RPL35A were the Hub proteins.Conclusions Gene expression in frontal lobe of patients with PD is associated with the pathogenesis of PD. This study provides a theoretical basis for understanding the mechanism of PD occurrence and progression, as well as the potential mechanism of depression in PD.

Citation: WU Xintong, HONG Peiwei. Gene expression profile of frontal lobe in Parkinson disease based on bioinformatics analysis. West China Medical Journal, 2019, 34(10): 1117-1125. doi: 10.7507/1002-0179.201904201 Copy

  • Previous Article

    Correlation between urinary disorders and imaging changes of cerebral small vessel diseases in community-dwelling populations
  • Next Article

    Systematic evaluation of hyperbaric oxygen therapy for delayed encephalopathy caused by carbon monoxide poisoning