{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T05:52:35Z","timestamp":1790401955151,"version":"4.1.0"},"reference-count":60,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"12","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["ATVB"],"published-print":{"date-parts":[[2019,12]]},"abstract":"<jats:sec>\n            <jats:title>Objective:<\/jats:title>\n            <jats:p>Despite the recent progress in upfront combination therapy for pulmonary arterial hypertension (PAH), useful biomarkers for the disorder still remain to be developed. SeP (Selenoprotein P) is a glycoprotein secreted from various kinds of cells including pulmonary artery smooth muscle cells to maintain cellular metabolism. We have recently demonstrated that SeP production from pulmonary artery smooth muscle cells is upregulated and plays crucial roles in the pathogenesis of PAH. However, it remains to be elucidated whether serum SeP levels could be a useful biomarker for PAH.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Approach and Results:<\/jats:title>\n            <jats:p>\n              We measured serum SeP levels and evaluated their prognostic impacts in 65 consecutive patients with PAH and 20 controls during follow-up (mean, 1520 days; interquartile range, 1393\u20131804 days). Serum SeP levels were measured using a newly developed sol particle homogeneous immunoassay. The patients with PAH showed significantly higher serum SeP levels compared with controls. Higher SeP levels (cutoff point, 3.47 mg\/L) were associated with the outcome (composite end point of all-cause death and lung transplantation) in patients with PAH (hazard ratio, 4.85 [1.42\u201316.6];\n              <jats:italic>P<\/jats:italic>\n              &lt;0.01). Importantly, we found that the absolute change in SeP of patients with PAH (\u0394SeP) in response to the initiation of PAH-specific therapy significantly correlated with the absolute change in mean pulmonary artery pressure, pulmonary vascular resistance (\u0394PVR), and cardiac index (\u0394CI;\n              <jats:italic>R<\/jats:italic>\n              =0.78, 0.76, and \u22120.71 respectively, all\n              <jats:italic>P<\/jats:italic>\n              &lt;0.0001). Moreover, increase in \u0394SeP during the follow-up predicted poor outcome of PAH.\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions:<\/jats:title>\n            <jats:p>Serum SeP is a novel biomarker for diagnosis and assessment of treatment efficacy and long-term prognosis in patients with PAH.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/atvbaha.119.313267","type":"journal-article","created":{"date-parts":[[2019,10,31]],"date-time":"2019-10-31T09:05:31Z","timestamp":1572512731000},"page":"2553-2562","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":20,"title":["Diagnostic and Prognostic Significance of Serum Levels of SeP (Selenoprotein P) in Patients With Pulmonary Hypertension"],"prefix":"10.1161","volume":"39","author":[{"given":"Nobuhiro","family":"Kikuchi","sequence":"first","affiliation":[{"name":"From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (N.K., K.S., T.S., N.Y., M.A.H.S., J.O., R.K., M.N., S.S., S.M., H.S.)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimio","family":"Satoh","sequence":"additional","affiliation":[{"name":"From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (N.K., K.S., T.S., N.Y., M.A.H.S., J.O., R.K., M.N., S.S., S.M., H.S.)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taijyu","family":"Satoh","sequence":"additional","affiliation":[{"name":"From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (N.K., K.S., T.S., N.Y., M.A.H.S., J.O., R.K., M.N., S.S., S.M., H.S.)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuhiro","family":"Yaoita","sequence":"additional","affiliation":[{"name":"From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, 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