Renal Actions of RGS2 Control Blood Pressure

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Renal actions of RGS2 control blood pressure.

G protein-coupled receptors (GPCRs) have key roles in cardiovascular regulation and are important targets for the treatment of hypertension. GTPase-activating proteins, such as RGS2, modulate downstream signaling by GPCRs. RGS2 displays regulatory selectivity for the Gαq subclass of G proteins, and mice lacking RGS2 develop hypertension through incompletely understood mechanisms. Using total bo...

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The regulator of G protein signaling (RGS) 2, a GTPase-activating protein, is activated via the nitric oxide (NO)-cGMP pathway and thereby may influence blood pressure regulation. To test that notion, we measured mean arterial blood pressure (MAP) and heart rate (HR) with telemetry in N(omega)-nitro-l-arginine methyl ester (l-NAME, 5 mg l-NAME/10 ml tap water)-treated RGS2-deficient (RGS2(-/-))...

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Translational control by RGS2

The regulator of G protein signaling (RGS) proteins are a family of guanosine triphosphatase (GTPase)-accelerating proteins. We have discovered a novel function for RGS2 in the control of protein synthesis. RGS2 was found to bind to eIF2Bepsilon (eukaryotic initiation factor 2B epsilon subunit) and inhibit the translation of messenger RNA (mRNA) into new protein. This effect was not observed fo...

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We have studied the contribution of circulating renin of renal origin to renin-like activity within the arterial wall and to blood pressure. Bolus injections of renin sufficient to elevate blood pressure by 44.7 mm Hg caused aortic renin to rise from 0.13 to 1.48 ng angiotensin I/100 mg/hr in nephrectomized rats. Elevation of aortic renin was still present at 6 hours, and this was associated wi...

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ژورنال

عنوان ژورنال: Journal of the American Society of Nephrology

سال: 2010

ISSN: 1046-6673,1533-3450

DOI: 10.1681/asn.2009121306