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Ajmal M, Ajmal A, Rizvi M, Salim U, Huang L. Left ventricular assist device bioinformatics identify possible hubgenes and regulatory networks involved in the myocardium of patients with left ventricular assist device. Front Cardiovasc Med 2022; 9:912760. [PMID: 36247468 PMCID: PMC9558819 DOI: 10.3389/fcvm.2022.912760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
Objective The aim of this study was to clarify the changes of myocardial gene expression profile after left ventricular assist device (LVAD) implantation and the related molecular biological significance. Methods A thorough bioinformatic analysis to evaluate the changes in gene expression profile in patients pre-LVAD and post-LVAD was conducted. Four relevant gene expression datasets—GSE430, GSE974, GSE21610, and GSE52601 from Gene Expression Omnibus (GEO) database were downloaded. Analysis of GEO2R, Gene Ontology (GO), protein-protein interaction (PPI) were used to determine differentially expressed genes (DEGs) and their function, respectively. Results A total of 37 DEGs were identified, including 26 down-regulated and 11 up-regulated genes. The molecular function of DEGs were enriched in “cytokine activity,” “neurotransmitter binding,” “receptor ligand activity.” The gene set enrichment analysis (GSEA) revealed an overall marked increase of neutrophil degranulation signaling, closely correlated with the G protein coupled receptor (GPCR)—ligand binding process after LVAD assistance. 16 hubgenes in these DEGs were further selected and the biological process involved is mainly related to positive regulation of leukocyte chemotaxis mediated by chemokines. Conclusion Inflammatory signaling pathway is crucial for the pathophysiology after LVAD implantation. Chemokines mediate cardiac inflammatory response and tissue remodeling after LVAD implantation through GPCR—ligand binding.
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Affiliation(s)
- Maryam Ajmal
- Faculty of Life Sciences and Medicine, Guy’s, King’s and St Thomas’ (GKT) School of Medical Education, King’s College London, London, United Kingdom
| | - Aisha Ajmal
- St George’s Hospital Medical School, St. George’s, University of London, London, United Kingdom
| | - Maryam Rizvi
- Faculty of Life Sciences and Medicine, Guy’s, King’s and St Thomas’ (GKT) School of Medical Education, King’s College London, London, United Kingdom
| | - Umar Salim
- St George’s Hospital Medical School, St. George’s, University of London, London, United Kingdom
| | - Lei Huang
- Department of Heart Center, Tianjin Third Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin Third Central Hospital, Tianjin, China
- Artificial Cell Engineering Technology Research Center, Tianjin, China
- Tianjin Institute of Hepatobiliary Disease, Tianjin, China
- *Correspondence: Lei Huang,
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Gu X, Xu J, Zhu L, Bryson T, Yang XP, Peterson E, Harding P. Prostaglandin E2 Reduces Cardiac Contractility via EP3 Receptor. Circ Heart Fail 2017; 9:CIRCHEARTFAILURE.116.003291. [PMID: 27502370 DOI: 10.1161/circheartfailure.116.003291] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 07/19/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Prostaglandin E2 (PGE2) EP receptors EP3 and EP4 signal via decreased and increased cAMP production, respectively. Previously, we reported that cardiomyocyte-specific EP4 knockout mice develop dilated cardiomyopathy with reduced ejection fraction. Thus, we hypothesized that PGE2 increases contractility via EP4 but decreases contractility via EP3. METHODS AND RESULTS The effects of PGE2 and the EP1/EP3 agonist sulprostone on contractility were examined in the mouse Langendorff preparation and in adult mouse cardiomyocytes. Isolated hearts of adult male C57Bl/6 mice were perfused with PGE2 (10(-6) M) or sulprostone (10(-6) M) and compared with vehicle. Both PGE2 and sulprostone decreased +dp/dt (P<0.01) and left ventricular developed pressure (P<0.001) with reversal by an EP3 antagonist. In contrast, the EP4 agonist had the opposite effect. Adult mouse cardiomyocytes contractility was also reduced after treatment with either PGE2 or sulprostone for 10 minutes. We then examined the acute effects of PGE2, sulprostone, and the EP4 agonist on expression of phosphorylated phospholamban and sarcoendoplasmic reticulum Ca(2+)-ATPase 2a in adult mouse cardiomyocytes using Western blot. Treatment with either PGE2 or sulprostone decreased expression of phosphorylated phospholamban corrected to total phospholamban, whereas treatment with the EP4 agonist had the opposite effect. Sarcoendoplasmic reticulum Ca(2+)-ATPase 2a expression was unaffected. Finally, we examined the effect of these compounds in vivo using pressure-volume loops. Both PGE2 and sulprostone decreased +dp/dt, whereas the EP4 agonist increased +dp/dt. CONCLUSIONS Contractility is reduced via the EP3 receptor but increased via EP4. These effects may be mediated through changes in phospholamban phosphorylation and has relevance to detrimental effects of inflammation.
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Affiliation(s)
- Xiaosong Gu
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Jiang Xu
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Liping Zhu
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Timothy Bryson
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Xiao-Ping Yang
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Edward Peterson
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.)
| | - Pamela Harding
- From the Hypertension and Vascular Research Division, Department of Internal Medicine (X.G., J.X., L.Z., T.B., X.-P.Y., P.H.) and Department of Physiology (T.B., P.H.), Wayne State University School of Medicine, Detroit, MI; Department of Public Health Sciences (E.P.), Henry Ford Hospital, Detroit, MI; and Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (X.G.).
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