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	Investigation of the relationship between regression of hypertensive cardiac hypertrophy and improvement of cardiac sympathetic nervous dysfunction using iodine-123 metaiodobenzylguanidine myocardial imaging.
掲載誌名	正式名：European journal of nuclear medicine 略　 称：Eur J Nucl Med ISSNコード：03406997/03406997
掲載区分	国外
巻・号・頁	23(7),pp.756-61
著者・共著者	Morimoto S†*, Terada K, Keira N, Satoda M, Inoue K, Tatsukawa H, Katoh S, Ida K, Sugihara H, Takeda K, Nakagawa M
担当区分	筆頭著者,責任著者
発行年月	1996/07
概要	Although many theories exist on the subject, the mechanisms responsible for a reduction of hypertensive cardiac hypertrophy in response to antihypertensive therapy are still unclear. In order to investigate the relationship between regression of hypertensive cardiac hypertrophy and cardiac nervous function, we studied ten patients with untreated essential hypertension (six men and four women, 62+/-12 years old). Both echocardiography and iodine-123 metaiodobenzylguanidine (MIBG) myocardial imaging were performed before and after antihypertensive therapy. Left ventricular mass (LVM) was significantly reduced in conjunction with the reduction of blood pressure following treatment. MIBG myocardial images showed that the heart-to-mediastinum activity ratio (H/M) was significantly increased while the washout ratio was significantly decreased. Patients were divided into two groups according to the ratio of the LVM values before and after therapy (LVM ratio). Patients with an LVM ratio of less than 0.75 were classified as group A and those with values higher than 0.75 as group B. Neither the change in blood pressure nor the length of treatment was significantly different between these two groups. On the other hand, both the increase in H/M and the decrease in the washout ratio were significantly greater in group A than in group B. These results indicate that an improvement in cardiac sympathetic nervous function may be related to the regression of hypertensive cardiac hypertrophy. Increasing the subject base in these studies and a more precise analysis of the relevance of the data obtained from MIBG myocardial images are recommended to clarify how changes in cardiac sympathetic nervous function relate to the regression of hypertensive cardiac hypertrophy.
DOI	10.1007/BF00843703
PMID	8662113