Differential regulation of diacylglycerol kinase isoform in human failing hearts

<p>Abstract</p> <p>Evidence from several studies indicates the importance of Gαq protein-coupled receptor (GPCR) signaling pathway, which includes diacylglycerol (DAG), and protein kinase C, in the development of heart failure. DAG kinase (DGK) acts as an endogenous regulator of GP...

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Main Authors: Sadahiro Mitsuaki, Kitahara Tatsuro, Sasaki Toshiki, Suzuki Satoshi, Toyama Shuji, Shishido Tetsuro, Bilim Olga, Takeishi Yasuchika, Kubota Isao
Format: Article
Language:English
Published: BMC 2011-05-01
Series:Journal of Cardiothoracic Surgery
Online Access:http://www.cardiothoracicsurgery.org/content/6/1/65
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author Sadahiro Mitsuaki
Kitahara Tatsuro
Sasaki Toshiki
Suzuki Satoshi
Toyama Shuji
Shishido Tetsuro
Bilim Olga
Takeishi Yasuchika
Kubota Isao
author_facet Sadahiro Mitsuaki
Kitahara Tatsuro
Sasaki Toshiki
Suzuki Satoshi
Toyama Shuji
Shishido Tetsuro
Bilim Olga
Takeishi Yasuchika
Kubota Isao
author_sort Sadahiro Mitsuaki
collection DOAJ
description <p>Abstract</p> <p>Evidence from several studies indicates the importance of Gαq protein-coupled receptor (GPCR) signaling pathway, which includes diacylglycerol (DAG), and protein kinase C, in the development of heart failure. DAG kinase (DGK) acts as an endogenous regulator of GPCR signaling pathway by catalyzing and regulating DAG. Expressions of DGK isoforms α, ε, and ζ in rodent hearts have been detected; however, the expression and alteration of DGK isoforms in a failing human heart has not yet been examined. In this study, we detected mRNA expressions of DGK isoforms γ, η, ε, and ζ in failing human heart samples obtained from patients undergoing cardiovascular surgery with cardiopulmonary bypass. Furthermore, we investigated modulation of DGK isoform expression in these hearts. We found that expressions of DGKη and DGKζ were increased and decreased, respectively, whereas those of DGKγ and DGKε remained unchanged. This is the first report that describes the differential regulation of DGK isoforms in normal and failing human hearts.</p>
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spelling doaj.art-56b9a45052894340ba6cb165f38548332022-12-22T03:28:05ZengBMCJournal of Cardiothoracic Surgery1749-80902011-05-01616510.1186/1749-8090-6-65Differential regulation of diacylglycerol kinase isoform in human failing heartsSadahiro MitsuakiKitahara TatsuroSasaki ToshikiSuzuki SatoshiToyama ShujiShishido TetsuroBilim OlgaTakeishi YasuchikaKubota Isao<p>Abstract</p> <p>Evidence from several studies indicates the importance of Gαq protein-coupled receptor (GPCR) signaling pathway, which includes diacylglycerol (DAG), and protein kinase C, in the development of heart failure. DAG kinase (DGK) acts as an endogenous regulator of GPCR signaling pathway by catalyzing and regulating DAG. Expressions of DGK isoforms α, ε, and ζ in rodent hearts have been detected; however, the expression and alteration of DGK isoforms in a failing human heart has not yet been examined. In this study, we detected mRNA expressions of DGK isoforms γ, η, ε, and ζ in failing human heart samples obtained from patients undergoing cardiovascular surgery with cardiopulmonary bypass. Furthermore, we investigated modulation of DGK isoform expression in these hearts. We found that expressions of DGKη and DGKζ were increased and decreased, respectively, whereas those of DGKγ and DGKε remained unchanged. This is the first report that describes the differential regulation of DGK isoforms in normal and failing human hearts.</p>http://www.cardiothoracicsurgery.org/content/6/1/65
spellingShingle Sadahiro Mitsuaki
Kitahara Tatsuro
Sasaki Toshiki
Suzuki Satoshi
Toyama Shuji
Shishido Tetsuro
Bilim Olga
Takeishi Yasuchika
Kubota Isao
Differential regulation of diacylglycerol kinase isoform in human failing hearts
Journal of Cardiothoracic Surgery
title Differential regulation of diacylglycerol kinase isoform in human failing hearts
title_full Differential regulation of diacylglycerol kinase isoform in human failing hearts
title_fullStr Differential regulation of diacylglycerol kinase isoform in human failing hearts
title_full_unstemmed Differential regulation of diacylglycerol kinase isoform in human failing hearts
title_short Differential regulation of diacylglycerol kinase isoform in human failing hearts
title_sort differential regulation of diacylglycerol kinase isoform in human failing hearts
url http://www.cardiothoracicsurgery.org/content/6/1/65
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