{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:52:44Z","timestamp":1790729564221,"version":"4.1.0"},"reference-count":67,"publisher":"Wiley","issue":"21","license":[{"start":{"date-parts":[[2023,7,25]],"date-time":"2023-07-25T00:00:00Z","timestamp":1690243200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["bpspubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["British J Pharmacology"],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and Purpose<\/jats:title><jats:p>Pulmonary hypertension (PH) is a cardiovascular disease characterised by an increase in pulmonary arterial (PA) resistance leading to right ventricular (RV) failure. Reactive oxygen species (ROS) play a major role in PH. OP2113 is a drug with beneficial effects on cardiac injuries that targets mitochondrial ROS. The aim of the study was to address the in vivo therapeutic effect of OP2113 in PH.<\/jats:p><\/jats:sec><jats:sec><jats:title>Experimental Approach<\/jats:title><jats:p>PH was induced by 3\u00a0weeks of chronic hypoxia (CH\u2010PH) in rats treated with OP2113 or its vehicle via subcutaneous osmotic mini\u2010pumps. Haemodynamic parameters and both PA and heart remodelling were assessed. Reactivity was quantified in PA rings and in RV or left ventricular (LV) cardiomyocytes. Oxidative stress was detected by electron paramagnetic resonance and western blotting. Mitochondrial mass and respiration were measured by western blotting and oxygraphy, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Key Results<\/jats:title><jats:p>In CH\u2010PH rats, OP2113 reduced the mean PA pressure, PA remodelling, PA hyperreactivity in response to <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"https:\/\/www.guidetopharmacology.org\/GRAC\/LigandDisplayForward?ligandId=5\">5-HT<\/jats:ext-link>, the contraction slowdown in RV and LV and increased the mitochondrial mass in RV. Interestingly, OP2113 had no effect on haemodynamic parameters, both PA and RV wall thickness and PA reactivity, in control rats. Whereas oxidative stress was evidenced by an increase in protein carbonylation in CH\u2010PH, this was not affected by OP2113.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion and Implications<\/jats:title><jats:p>Our study provides evidence for a selective protective effect of OP2113 in vivo on alterations in both PA and RV from CH\u2010PH rats without side effects in control rats.<\/jats:p><\/jats:sec>","DOI":"10.1111\/bph.16174","type":"journal-article","created":{"date-parts":[[2023,6,25]],"date-time":"2023-06-25T00:58:58Z","timestamp":1687654738000},"page":"2802-2821","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["OP2113, a new drug for chronic hypoxia\u2010induced pulmonary hypertension treatment in rat"],"prefix":"10.1111","volume":"180","author":[{"given":"Lukas","family":"Roubenne","sequence":"first","affiliation":[{"name":"Univ. 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