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Expression Of Heme Oxygenase-1 In Thick Ascending Loop Of Henle Attenuates Angiotensin Ii-Dependent Hypertension, David E. Stec, Heather A. Drummond, Moneete U. Gousette, Megan V. Storm, Nader G. Abraham, Eva Csongradi
Expression Of Heme Oxygenase-1 In Thick Ascending Loop Of Henle Attenuates Angiotensin Ii-Dependent Hypertension, David E. Stec, Heather A. Drummond, Moneete U. Gousette, Megan V. Storm, Nader G. Abraham, Eva Csongradi
Nader G. Abraham
Kidney-specific induction of heme oxygenase-1 (HO-1) attenuates the development of angiotensin II (Ang II) -dependent hypertension, but the relative contribution of vascular versus tubular induction of HO-1 is unknown. To determine the specific contribution of thick ascending loop of Henle (TALH) -derived HO-1, we generated a transgenic mouse in which the uromodulin promoter controlled expression of human HO-1. Quantitative RT-PCR and confocal microscopy confirmed successful localization of the HO-1 transgene to TALH tubule segments. Medullary HO activity, but not cortical HO activity, was significantly higher in transgenic mice than control mice. Enhanced TALH HO-1 attenuated the hypertension induced by Ang …
Ho-1 Induction Improves The Type-1 Cardiorenal Syndrome In Mice With Impaired Angiotensin Ii–Induced Lymphocyte Activation, Sumit R. Monu, Paola Pesce, Komal Sodhi, Massimo Boldrin, Nitin Puri, Larisa Fedorova, David Sacerdoti, Stephen J. Peterson, Nader G. Abraham, Attallah Kappas
Ho-1 Induction Improves The Type-1 Cardiorenal Syndrome In Mice With Impaired Angiotensin Ii–Induced Lymphocyte Activation, Sumit R. Monu, Paola Pesce, Komal Sodhi, Massimo Boldrin, Nitin Puri, Larisa Fedorova, David Sacerdoti, Stephen J. Peterson, Nader G. Abraham, Attallah Kappas
Nader G. Abraham
Type-1 cardiorenal syndrome, characterized by acute kidney dysfunction secondary to cardiac failure and renal arteriolar vasoconstriction, is mediated by the renin–angiotensin–aldosterone axis and sympathetic nervous system activation. Previous reports indicate that angiotensin II modulates immune function and causes recruitment and activation of T-lymphocytes. The goal of this study was to evaluate the effects of postischemic heart failure on renal morphology and circulation and the beneficial effects of heme oxygenase-1 (HO-1) induction in T-lymphocyte–suppressed severe combined immune deficiency (SCID) mice. Mice were divided into 4 groups: sham, myocardial infarction (MI), MI treated with an HO-1 inducer, cobalt protoporphyrin, and with or …