モリモト　サトシ   MORIMOTO Satoshi   森本　聡    所属   医学部 医学科（東京女子医科大学病院）    職種   准教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Chronic angiotensin blockade with candesartan cilexetil in DOCA/salt hypertensive rats reduces cardiac hypertrophy and coronary resistance without affecting blood pressure.
掲載誌名	正式名：Hypertension research : official journal of the Japanese Society of Hypertension 略　 称：Hypertens Res ISSNコード：09169636/09169636
掲載区分	国外
巻・号・頁	20(4),pp.263-7
著者・共著者	Fujita H, Takeda K, Miki S, Morimoto S, Kawa T, Uchida A, Itoh H, Nakata T, Sasaki S, Nakagawa M
発行年月	1997/12
概要	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