{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T22:23:39Z","timestamp":1787955819803,"version":"build-2784847793"},"reference-count":51,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,8]],"date-time":"2023-08-08T00:00:00Z","timestamp":1691452800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["SC1GM128210"],"award-info":[{"award-number":["SC1GM128210"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["2006477"],"award-info":[{"award-number":["2006477"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["SC1GM128210"],"award-info":[{"award-number":["SC1GM128210"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["2006477"],"award-info":[{"award-number":["2006477"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>Optic atrophy-1 (OPA1) plays a crucial role in the regulation of mitochondria fusion and participates in maintaining the structural integrity of mitochondrial cristae. Here we elucidate the role of OPA1 cleavage induced by calcium swelling in the presence of Myls22 (an OPA1 GTPase activity inhibitor) and TPEN (an OMA1 inhibitor). The rate of ADP-stimulated respiration was found diminished by both inhibitors, and they did not prevent Ca2+-induced mitochondrial respiratory dysfunction, membrane depolarization, or swelling. L-OPA1 cleavage was stimulated at state 3 respiration; therefore, our data suggest that L-OPA1 cleavage produces S-OPA1 to maintain mitochondrial bioenergetics in response to stress.<\/jats:p>","DOI":"10.3390\/cells12162017","type":"journal-article","created":{"date-parts":[[2023,8,8]],"date-time":"2023-08-08T12:35:42Z","timestamp":1691498142000},"page":"2017","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The Role of Swelling in the Regulation of OPA1-Mediated Mitochondrial Function in the Heart In Vitro"],"prefix":"10.3390","volume":"12","author":[{"given":"Xavier R.","family":"Chapa-Dubocq","sequence":"first","affiliation":[{"name":"Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR 00936-5067, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keishla M.","family":"Rodr\u00edguez-Graciani","sequence":"additional","affiliation":[{"name":"Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR 00936-5067, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorge","family":"Garc\u00eda-B\u00e1ez","sequence":"additional","affiliation":[{"name":"Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR 00936-5067, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alyssa","family":"Vadovsky","sequence":"additional","affiliation":[{"name":"Department of Physiology, Michigan State University, East Lansing, MI 48824-1046, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6424-9938","authenticated-orcid":false,"given":"Jason N.","family":"Bazil","sequence":"additional","affiliation":[{"name":"Department of Physiology, Michigan State University, East Lansing, MI 48824-1046, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7024-5383","authenticated-orcid":false,"given":"Sabzali","family":"Javadov","sequence":"additional","affiliation":[{"name":"Department of Physiology, University of Puerto Rico School of Medicine, San Juan, PR 00936-5067, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Kuhlbrandt, W. 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