Title : Phosphoinositide 3-kinase gamma regulates cardiac contractility by locally controlling cyclic adenosine monophosphate levels.

Pub. Date : 2006 Oct

PMID : 16980183






6 Functional Relationships(s)
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1 We have shown that the loss of PI3Kgamma (PI3Kgamma(-/-) mice) enhances cardiac excitation-contraction coupling by modulating cyclic adenosine monophosphate (cAMP) levels in subcellular domains containing the sarcoplasmic reticulum. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus
2 We have shown that the loss of PI3Kgamma (PI3Kgamma(-/-) mice) enhances cardiac excitation-contraction coupling by modulating cyclic adenosine monophosphate (cAMP) levels in subcellular domains containing the sarcoplasmic reticulum. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus
3 We have shown that the loss of PI3Kgamma (PI3Kgamma(-/-) mice) enhances cardiac excitation-contraction coupling by modulating cyclic adenosine monophosphate (cAMP) levels in subcellular domains containing the sarcoplasmic reticulum. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus
4 We have shown that the loss of PI3Kgamma (PI3Kgamma(-/-) mice) enhances cardiac excitation-contraction coupling by modulating cyclic adenosine monophosphate (cAMP) levels in subcellular domains containing the sarcoplasmic reticulum. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus
5 Specifically, PI3Kgamma(-/-) mice show enhanced sarcoplasmic reticulum Ca(2+) cycling in association with increased cAMP. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus
6 We also review the different roles of PI3Kgamma in the heart, particularly as they relate to cardiac contractility, intracellular cAMP levels, and the regulation of beta-adrenergic receptor signaling in physiologic and pathologic states. Cyclic AMP phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma Mus musculus