MORIMOTO Satoshi    Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine    Position   Associate Professor
Article types	Original article
Language	English
Peer review	Peer reviewed
Title	Chronic angiotensin blockade with candesartan cilexetil in DOCA/salt hypertensive rats reduces cardiac hypertrophy and coronary resistance without affecting blood pressure.
Journal	Formal name：Hypertension research : official journal of the Japanese Society of Hypertension Abbreviation：Hypertens Res ISSN code：09169636/09169636
Domestic / Foregin	Foregin
Volume, Issue, Page	20(4),pp.263-7
Author and coauthor	Fujita H, Takeda K, Miki S, Morimoto S, Kawa T, Uchida A, Itoh H, Nakata T, Sasaki S, Nakagawa M
Publication date	1997/12
Summary	To determine whether angiotensin II participates in the pathogenesis of cardiac hypertrophy and impairs coronary circulation in DOCA/salt hypertension, DOCA hypertensive rats were treated with candesartan cilexetil for 8 wk. DOCA/salt hypertension was induced in Wistar rats by removing the right kidney and subcutaneously injecting deoxycorticosterone acetate once a week. Control rats were given subcutaneous injections of saline and maintained on a normal diet. After 4 wk of observation, the angiotensin II receptor antagonist candesartan cilexetil was administered by oral gavage for 8 wk to 14 rats. Systolic blood pressure was measured weekly with the tail-cuff method. After 12 wk, the rats were killed and prepared. The isolated hearts were perfused by a Langendorff apparatus at constant flow. Perfusion pressure was measured by a small-volume transducer, and perfusion flow was recorded by a drop counter. Development of hypertension was not prevented by candesartan cilexetil treatment, but development of cardiac hypertrophy was inhibited. Minimum coronary vascular resistance (MCVR) obtained upon infusing adenosine into the isolated hearts was significantly higher in DOCA/salt hypertensive rats than in sham-operated controls. The elevated MCVR in DOCA/salt hypertensive rats was decreased by the administration of candesartan cilexetil for 8 wk. Thus, candesartan cilexetil regressed cardiac hypertrophy and improved coronary vascular resistance without affecting high blood pressure. These findings suggest that angiotensin II plays an important role in the pathogenesis of cardiac hypertrophy in DOCA/salt hypertension and that cardiac hypertrophy increases coronary vascular resistance.
DOI	10.1291/hypres.20.263
PMID	9453261