Unknown,Transcriptomics,Genomics,Proteomics

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Comparison study between Uremic patient with Healthy control

ABSTRACT: Patients with chronic kidney disease (CKD) have significantly increased morbidity and mortality resulting from infections and cardiovascular diseases. Since monocytes play an essential role in host immunity, this study was directed to explore the gene expression profile and to identify differences in activated pathways in monocytes relevant to the pathophysiology of atherosclerosis and increased susceptibility to infections. Monocytes from CKD patients (stages 4 and 5, eGFR <20 ml/min x 1.73 m2) and healthy donors were collected from peripheral blood. Microarray gene expression profile was done and data were interpreted by Genespring software and Panther tools website. Western blot was done to validate the pathway members. The results demonstrated that 487 and 258 genes were differentially up- and down regulated respectively in the patient group. Pathways involved in the inflammatory response were highly expressed and the Wnt/β- catenin signaling pathway was the most significant pathway expressed in the patient group (P=0.02). Since this pathway has been attributed to a variety of inflammatory manifestations, the current finding may contribute to dysfunctional monocytes in CKD patients. To develop strategies to interfere with this pathway may improve host immunity and prevent cardiovascular complications in CKD patients. Six gene expression Affymetrix chip were used. Three for each group

ORGANISM(S): Homo sapiens

SUBMITTER: Elham Dadfar

PROVIDER: E-GEOD-43484 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Cardiovascular disease is the major cause of morbidity and death in patients with chronic kidney disease (CKD) and end-stage renal disease (ESRD). Patients with CKD and ESRD are at high risk for myocardial dysfunction, ischemia and heart failure. The mechanisms linking impaired renal function and increased risk for cardiovascular diseases, however, remain elusive. In addition, conventional therapeutics proven effective in reducing cardiovascular events in general population fail to provide similar benefits in uremic patients. There is a clear need to identify novel mediators of cardiovascular complications in uremic patients to provide insights into the pathogenesis, to tailor clinical care based on cardiovascular risks, and to develop new therapeutic strategies. It has become increasingly clear that the transcription of the eukaryotic genome is far more pervasive and complex than previously appreciated. While the expression of messenger RNAs (mRNAs) and microRNAs (miRNAs) account for only ~1% of all transcribed species, up to 90% of the mammalian genome is transcribed as long non-coding RNAs (lncRNAs), a heterogeneous group of non-coding transcripts longer than 200 nucleotides. LncRNAs have been shown to be functional and involved in specific physiological and pathological processes through epigenetic, transcriptional and post-transcriptional mechanisms. While the roles of lncRNAs in human diseases including cancer and neurodegenerative disorders are beginning to emerge, it remains unclear how lncRNA regulation contributes to cardiovascular complications in patients with renal dysfunction. In this proposal, we seek to apply next-generation sequencing technology to investigate circulating (plasma) lncRNA expression in control subjects and in patients with CKD and ESRD. We will test the hypothesis that circulating lncRNA expression signature can reflect the underlying kidney disease states in patients with CKD and ESRD. In addition, we will determine if circulating lncRNA expression signature could be a sensitive and specific biomarker to predict adverse cardiovascular events in patients with ESRD.

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Comparison study between Uremic patient with Healthy control

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