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To study the changes of the metabolic profile during the pathogenesis in monocrotaline (MCT) induced pulmonary arterial hypertension (PAH).<jats:italic>Methods<\/jats:italic>. Forty male Sprague-Dawley (SD) rats were randomly divided into 5 groups (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn fontstyle=\"italic\">8<\/mml:mn><\/mml:math>, each). PAH rats were induced by a single dose intraperitoneal injection of 60 mg\/kg MCT, while 8 rats given intraperitoneal injection of 1 ml normal saline and scarified in the same day (W0) served as control. Mean pulmonary arterial pressure (mPAP) was measured through catherization. The degree of right ventricular hypertrophy and pulmonary hyperplasia were determined at the end of first to fourth weeks; nuclear magnetic resonance (NMR) spectra of sera were then acquired for the analysis of metabolites. Principal component analysis (PCA) and orthogonal partial least-squares discriminant analysis (OPLS-DA) were used to discriminate different metabolic profiles.<jats:italic>Results<\/jats:italic>. The prominent changes of metabolic profiles were seen during these four weeks. Twenty specific metabolites were identified, which were mainly involved in lipid metabolism, glycolysis, energy metabolism, ketogenesis, and methionine metabolism. Profiles of correlation between these metabolites in each stage changed markedly, especially in the fourth week. Highly activated methionine and betaine metabolism pathways were selected by the pathway enrichment analysis.<jats:italic>Conclusions<\/jats:italic>. Metabolic dysfunction is involved in the development and progression of PAH.<\/jats:p>","DOI":"10.1155\/2016\/5803031","type":"journal-article","created":{"date-parts":[[2016,1,18]],"date-time":"2016-01-18T16:02:51Z","timestamp":1453132971000},"page":"1-11","source":"Crossref","is-referenced-by-count":18,"title":["<sup>1<\/sup>H NMR-Based Analysis of Serum Metabolites in Monocrotaline-Induced Pulmonary Arterial Hypertensive Rats"],"prefix":"10.1155","volume":"2016","author":[{"given":"Taijie","family":"Lin","sequence":"first","affiliation":[{"name":"Fujian Hypertension Research Institute, First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinping","family":"Gu","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caihua","family":"Huang","sequence":"additional","affiliation":[{"name":"The Physical Education Department, Xiamen University of Technology, Xiamen 361024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suli","family":"Zheng","sequence":"additional","affiliation":[{"name":"Fujian Hypertension Research Institute, First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xu","family":"Lin","sequence":"additional","affiliation":[{"name":"Fujian Hypertension Research Institute, First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liangdi","family":"Xie","sequence":"additional","affiliation":[{"name":"Fujian Hypertension Research Institute, First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Donghai","family":"Lin","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1056\/nejm199701093360207"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1097\/00005082-200503000-00005"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1126\/scitranslmed.3005428"},{"key":"4","doi-asserted-by":"crossref","first-page":"565S","DOI":"10.1378\/chest.128.6_suppl.565S","volume":"128","year":"2005","journal-title":"Chest 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