| Aspirin Attenuates Pulmonary Arterial Hypertension in Rats by Reducing Plasma 5-Hydroxytryptamine Levels. | |
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MedLine Citation:
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PMID: 21327581 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Pulmonary arterial hypertension (PAH) is characterized by increasing pulmonary pressure, right ventricular failure, and death. The typical pathological changes include medial hypertrophy, intimal fibrosis and in situ thrombosis. Serotonin (5-HT) and other factors contribute to the development of pathologic lesions. Aspirin (ASA), a platelet aggregation inhibitor, inhibits 5-HT release from platelets. The aim of this study was to determine the efficacy of ASA in preventing or attenuating PAH. Sprague-Dawley rats injected with monocrotaline (MCT) developed severe PAH within 31 days. One hundred forty rats were randomized to receive either vehicle or ASA (0.5, 1, 2, or 4 mg/kg/day). The pre-ASA group was treated with ASA (1 mg/kg/day) for 30 days before the MCT injection. Thirty-one days after the injection (day 61 for the pre-ASA group), pulmonary arterial pressure (PAP), right ventricular hypertrophy and pulmonary arteriole thickness were measured. Plasma 5-HT was measured by high-performance liquid chromatography. Aspirin suppressed PAH and increased the survival rate compared with the control group (84 vs. 60%, P < 0.05). Aspirin treatment also reduced right ventricular hypertrophy and pulmonary arteriole proliferation in ASA-treated PAH model. In addition, plasma 5-HT was decreased in our ASA-treated PAH model. The degree of 5-HT reduction was associated with systolic PAP, right ventricular hypertrophy and wall thickness of pulmonary arterioles in rats. These results showed that ASA treatment effectively attenuated MCT-induced pulmonary hypertension, right ventricular hypertrophy, and occlusion of the pulmonary arteries. The effects of ASA was associated with a reduction of 5-HT. |
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Authors:
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Lan Shen; Jieyan Shen; Jun Pu; Ben He |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-15 |
Journal Detail:
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Title: Cell biochemistry and biophysics Volume: - ISSN: 1559-0283 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9701934 Medline TA: Cell Biochem Biophys Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Cardiovascular Department, Renji Hospital, Shanghai Jiaotong University School of Medicine, Dong Fang Road 1630, Shanghai, 200127, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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