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자료유형
학술저널
저자정보
저널정보
대한고혈압학회 Clinical Hypertension Clinical Hypertension 제17권 제1호
발행연도
2011.1
수록면
28 - 36 (9page)

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Background: Pulmonary artery hypertension is characterized by persistent increase of vascular resistance, and is associated with right ventricle failure. We investigated changes of plasma renin, serum aldosterone, angiotensin converting enzyme (ACE) concentrations, ACE gene expressions and protein contents after bosentan treatment. Methods: Six-week-old male Sprague-Dawley rats were divided into three groups: control (C) group, monocrotaline (M) group, and bosentan (B) group. Groups M and B were subcutaneously administered with 60 mg/kg of monocrotaline. In group B, 20 mg/kg/day of bosentan was administered by gavage twice a day. The rats were sacrificed after 1, 5, 7, 14, and 28 days. Changes of ACE gene expressions were analyzed by reverse transcription-polymerase chain reaction. Also, plasma renin, serum aldosterone, and ACE levels were measured. Results: Serum aldosterone levels were significantly increased in group M compared with group C and significantly decreased after bosentan treatment on day 28. Serum ACE concentrations were significantly decreased compared with group M after bosentan treatment on day 28. Gene expressions of ACE were significantly increased in group M compared with group C on day 5 and significantly decreased after bosentan treatment on day 7 and 14. ACE protein contents significantly increased in group M compared with group C in week 2 and 4. It significantly decreased after bosentan treatment in week 2. Conclusions: The renin-angiotensin system is associated with pulmonary artery hypertension. To investigate the effects of bosentan on the renin-angiotensin system in pulmonary artery hypertension, further studies on the effects of bosentan according to different doses are required in the future.

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