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Titolo:
Effects of amlodipine and cilnidipine on cardiac sympathetic nervous system and neurohormonal status in essential hypertension
Autore:
Sakata, K; Shirotani, M; Yoshida, H; Nawada, R; Obayashi, K; Togi, K; Miho, N;
Indirizzi:
Shizuoka Gen Hosp, Dept Cardiol, Shizuoka, Japan Shizuoka Gen Hosp Shizuoka Japan en Hosp, Dept Cardiol, Shizuoka, Japan
Titolo Testata:
HYPERTENSION
fascicolo: 6, volume: 33, anno: 1999,
pagine: 1447 - 1452
SICI:
0194-911X(199906)33:6<1447:EOAACO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONGESTIVE HEART-FAILURE; MYOCARDIAL-INFARCTION; ALDOSTERONE SYSTEM; CALCIUM-CHANNEL; OMEGA-CONOTOXIN; NIFEDIPINE; RENIN; NOREPINEPHRINE; ANGIOTENSIN; MECHANISMS;
Keywords:
calcium channels; amlodipine; cilnidipine; sympathetic nervous system; plasma; renin; imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Sakata, K Shizuoka Gen Hosp, Dept Cardiol, 4-27-1 Kita Andou, Shizuoka, Japan Shizuoka Gen Hosp 4-27-1 Kita Andou Shizuoka Japan uoka, Japan
Citazione:
K. Sakata et al., "Effects of amlodipine and cilnidipine on cardiac sympathetic nervous system and neurohormonal status in essential hypertension", HYPERTENSIO, 33(6), 1999, pp. 1447-1452

Abstract

N-Type calcium channel antagonists may suppress sympathetic activity, The purpose of this study was to assess the effects of amlodipine and cilnidipine on the cardiac sympathetic nervous system and the neurohormonal status of essential hypertension. I-123-metaiodobenzylguanidine (MIBG) cardiac imaging was performed and blood samples were taken to determine plasma renin activity and plasma norepinephrine concentration before and 3 months after drug administration in 47 patients with mild essential hypertension. Twenty-four of the patients were treated with 5 to 10 mg/d of amlodipine; the other23 were treated with 10 to 20 mg/d of cilnidipine. For comparison, 12 normotensive subjects were also studied. No significant differences were found in the basal characteristics between the 2 hypertensive groups. In both hypertensive groups, both the systolic and diastolic blood pressures were significantly reduced to similar levels 3 months after drug treatment. Before the drug treatment, the 2 hypertensive groups had a significantly higher washout rate and lower heart-to-mediastinum (H/M) ratio compared with the normotensive subjects. The H/M ratio significantly increased (P<0.05) in combination with a decreased washout rate (P<0.02) after drug treatment in the cilnidipine group. In the amlodipine group, a significant decrease in washoutrate (P<0.04) was noted, without an increase in the H/M ratio. However, nosignificant changes were found in plasma renin activity and plasma norepinephrine concentration in either group. Thus, in patients with essential hypertension, cilnidipine suppressed cardiac sympathetic overactivity and amlodipine had a little suppressive effect. Cilnidipine may provide a new strategy for treatment of cardiovascular diseases with sympathetic overactivity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 06:54:34