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  • Title: Long-term blockade of the angiotensin II receptor in renin transgenic rats, salt-loaded Dahl rats, and stroke-prone spontaneously hypertensive rats.
    Author: Stasch JP, Knorr A, Hirth-Dietrich C, Krämer T, Hübsch W, Dressel J, Fey P, Beuck M, Sander E, Frobel K, Kazda S.
    Journal: Arzneimittelforschung; 1997 Sep; 47(9):1016-23. PubMed ID: 9342414.
    Abstract:
    These studies were designed to investigate the protective effects of the new angiotensin II receptors antagonist BAY 10-6734 (6-n-butyl-4-methoxycarbonyl-2-oxo-1[(2'-(1H-tetrazol-5-yl) -3-fluorobiphenyl-4-yl)methyl] 1,2-dihydropyridine, CAS 156001-18-2) on haemodynamic, hormonal, renal, and structural parameters in renin transgenic rats (TGR(mRen2)27), salt-loaded Dahl S and R rats, and salt-loaded stroke-prone spontaneously hypertensive rats (SHR-SP) in long-term trials. Study 1: In SHR-SP the development of blood pressure, cardiac hypertrophy, and the deleterious effects of salt loading on kidney structure and kidney function was prevented by BAY 10-6734. Study 2: In salt-loaded Dahl S rats with a suppressed plasma renin activity treatment with BAY 10-6734 did not delay the increase in blood pressure but prevented cardiac hypertrophy and the increase in plasma ANP (Atrial natriuretic peptide). Study 3: TGR develop malignant hypertension associated with cardiac hypertrophy, elevated left-ventricular end-diastolic pressure and increased plasma ANP. After 6 weeks of treatment with BAY 10-6734 (30 mg/kg p.o. bid) cardiac pump function was improved and cardiac hypertrophy was reversed in this angiotension dependent form of hypertension. The beneficial effects of BAY 10-6734 in these different animal hypertension models are also emphasized by a reduction in mortality.
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