{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T20:13:11Z","timestamp":1791144791613,"version":"4.1.0"},"reference-count":46,"publisher":"European Respiratory Society (ERS)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur Respir J"],"accepted":{"date-parts":[[2011,2,15]]},"published-print":{"date-parts":[[2011,10]]},"abstract":"<jats:p>Endothelin receptor antagonists are used to treat idiopathic pulmonary arterial hypertension (IPAH), but human pulmonary arterial endothelin receptor expression is not well defined. We hypothesised that disease and treatment would modify normal receptor distribution in pulmonary resistance arteries of children.<\/jats:p>\n                  <jats:p>\n                    Using immunohistochemistry and semiquantitative analysis, we investigated endothelin receptor subtypes A and B (ET\n                    <jats:sub>A<\/jats:sub>\n                    and ET\n                    <jats:sub>B<\/jats:sub>\n                    , respectively), and endothelial nitric oxide synthase (eNOS) expression in peripheral pulmonary arteries of tissue from untreated children with IPAH (n=7), following extended combined bosentan and epoprostenol therapy (n=5) and from normal subjects (n=5).\n                  <\/jats:p>\n                  <jats:p>\n                    Clinical, haemodynamic and pathological abnormalities were severe and advanced in all IPAH cases. ET\n                    <jats:sub>A<\/jats:sub>\n                    was detected in pulmonary arterial endothelial cells of all normal and diseased tissue and cultured cells. Endothelial ET\n                    <jats:sub>A<\/jats:sub>\n                    , ET\n                    <jats:sub>B<\/jats:sub>\n                    and eNOS expression was reduced in patent, plexiform and dilatation lesions of untreated cases, but in treated cases, ET\n                    <jats:sub>A<\/jats:sub>\n                    and ET\n                    <jats:sub>B<\/jats:sub>\n                    were normal and eNOS increased. In smooth muscle, ET\n                    <jats:sub>A<\/jats:sub>\n                    expression was reduced in treated cases but ET\n                    <jats:sub>B<\/jats:sub>\n                    expression increased in all arteries of both treated and untreated cases.\n                  <\/jats:p>\n                  <jats:p>\n                    In summary, ET\n                    <jats:sub>A<\/jats:sub>\n                    is expressed on human pulmonary arterial endothelium. In IPAH, combination treatment with bosentan and epoprostenol had a more marked influence on endothelin receptor expression of endothelial than smooth muscle cells.\n                  <\/jats:p>","DOI":"10.1183\/09031936.00167010","type":"journal-article","created":{"date-parts":[[2011,3,15]],"date-time":"2011-03-15T22:35:11Z","timestamp":1300228511000},"page":"851-860","source":"Crossref","is-referenced-by-count":25,"title":["Endothelin receptor expression in idiopathic pulmonary arterial hypertension: effect of bosentan and epoprostenol treatment"],"prefix":"10.1183","volume":"38","author":[{"given":"S.M.","family":"Hall","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N.","family":"Davie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N.","family":"Klein","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.G.","family":"Haworth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"81","published-online":{"date-parts":[[2011,3,15]]},"reference":[{"key":"2024102020355361000_38.4.851.1","doi-asserted-by":"publisher","DOI":"10.1002\/ppul.20051"},{"key":"2024102020355361000_38.4.851.2","doi-asserted-by":"publisher","DOI":"10.2459\/01.JCM.0000242996.19077.ba"},{"key":"2024102020355361000_38.4.851.3","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1164\/ajrccm\/148.2.519","article-title":"Circulating immunoreactive endothelin-1 in children with pulmonary hypertension. 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