Dataset Information

Analysis of the preoperative plasma samples of sinus rhythm and POAF in CABG using Proteomic study

ABSTRACT: Postoperative atrial fibrillation (POAF) is a common complication in coronary artery bypass grafting (CABG). We investigated pre-existing biological derangements before CABG to provide molecular insights into the pathogenesis. Preoperative plasma samples of discovery set from matched cohorts in sinus rhythm and POAF respectively were analyzed using proteomic approaches to identify the differential proteins that were validated in a new cohort by ELISA. Bioinformatics analysis were performed to reveal the underlying mechanism of the onset of POAF. The results revealed that preoperative alteration of PPAR-alpha increased the susceptibility of POAF after CABG.

ORGANISM(S): Homo Sapiens

SUBMITTER: Guowei He

PROVIDER: PXD011383 | iProX | Wed Oct 17 00:00:00 BST 2018

REPOSITORIES: iProX

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Publications

Preoperative plasma biomarkers associated with atrial fibrillation after coronary artery bypass surgery.

Li Xin-Ya XY Hou Hai-Tao HT Chen Huan-Xin HX Liu Xiao-Cheng XC Wang Jun J Yang Qin Q He Guo-Wei GW

The Journal of thoracic and cardiovascular surgery 20200219 3

<h4>Objectives</h4>Postoperative atrial fibrillation (POAF) is a common complication in coronary artery bypass grafting (CABG) procedures. This prospective study aimed to investigate predisposition of proteins and metabolites correlated to POAF after CABG and related cellular pathways.<h4>Methods</h4>Preoperative plasma samples from patients undergoing CABG procedures were prospectively collected. After CABG, the patients were grouped to POAF or sinus rhythm (N = 170; n = 90 in the discovery set ...[more]

PMID: 32197906

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Project description:Background. In experimental setting the concept of myocardial preconditioning-by hyperoxia has been introduced and different intracellular protective mechanisms and their effects have been described. To study whether similar protective phenotype can be induced by hyperoxia also in humans, gene expression profile after hyperoxic exposure was analyzed. Methods and Findings. Adult patients were randomized to be ventilated with either FiO2 0.4 (n=14) or 1.0 (n=10) for 60 minutes before coronary artery bypass grafting. A tissue sample from the right atrial appendage was taken for gene analysis and expression profile analysis on genome wide level by gene chip analysis was applied. Exposure to > 96% oxygen for 60 minutes significantly changed the expression of 20 different genes, including upregulation of two different humanins - MTRNR2L2 and MTRNR2L8, and activated a “cell survival” network as detected by Ingenuity Pathway Analyses. Conclusions. Administration of > 96% oxygen for 1 hour changes gene expression in the myocardium of the patients with coronary artery disease and may enhance cell survival capability. Background. In experimental setting the concept of myocardial preconditioning-by hyperoxia has been introduced and different intracellular protective mechanisms and their effects have been described. To study whether similar protective phenotype can be induced by hyperoxia also in humans, gene expression profile after hyperoxic exposure was analyzed. Methods and Findings. Adult patients were randomized to be ventilated with either FiO2 0.4 (n=14) or 1.0 (n=10) for 60 minutes before coronary artery bypass grafting. A tissue sample from the right atrial appendage was taken for gene analysis and expression profile analysis on genome wide level by gene chip analysis was applied. Exposure to > 96% oxygen for 60 minutes significantly changed the expression of 20 different genes, including upregulation of two different humanins - MTRNR2L2 and MTRNR2L8, and activated a “cell survival” network as detected by Ingenuity Pathway Analyses. Conclusions. Administration of > 96% oxygen for 1 hour changes gene expression in the myocardium of the patients with coronary artery disease and may enhance cell survival capability. 24 samples, 14 controls and 10 with intervention

Dataset Information

Analysis of the preoperative plasma samples of sinus rhythm and POAF in CABG using Proteomic study

Publications

Preoperative plasma biomarkers associated with atrial fibrillation after coronary artery bypass surgery.

Similar Datasets

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