{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T17:56:33Z","timestamp":1791482193685,"version":"4.3.4"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,5,11]],"date-time":"2025-05-11T00:00:00Z","timestamp":1746921600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100007543","name":"Grantov\u00e1 Agentura, Univerzita Karlova","doi-asserted-by":"publisher","award":["586120"],"award-info":[{"award-number":["586120"]}],"id":[{"id":"10.13039\/100007543","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Muscle and Nerve"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Introduction\/Aims<\/jats:title><jats:p>The distinction between hepatic and muscular origin of transaminases in Duchenne (DMD) and Becker (BMD) muscular dystrophy is challenging. We aimed to describe the relations between creatine kinase (CK), lactate dehydrogenase (LDH), myoglobin, and alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyltransferase (GGT), and their evolution with age, the severity of the disease, and its complications (corticosteroid therapy, cardiac ejection fraction, body mass index [BMI]).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Multiple regression analysis of the studied markers was performed in three cohorts: 1. Retrospective data of 212 DMD and BMD boys available in the national registry of muscular dystrophies (REaDY), and 2. Cross\u2010sectional study supplemented by retrospective data of A. 64 DMD boys and B. 18 adults with either BMD or B\/DMD carriers.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The estimation of normal levels of transaminases from CK levels was: ALT [UI\/L]\u2009=\u2009228.508\u2009+\u20090.011*CK [UI\/L]\u2009\u00b1\u2009341.822for DMD, and ALT [UI\/L]\u2009=\u2009124.498\u2009+\u20090.011*CK [UI\/L]\u2009\u00b1\u2009341.822for BMD. AST [UI\/L]\u2009=\u2009167.436\u2009+\u20090.012*CK [UI\/L]\u20136.323*Age\u2009\u00b1\u2009249.804 for both (all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). In the smaller cohort, ALT was best predicted by LDH and physical performance, whereas AST was defined by CK and LDH combined (all <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). In DMD, all AST, ALT, CK, LDH, and myoglobin decreased with age (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), while GGT increased with age and BMI (both <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Transaminases are dependent on CK and LDH in dystrophinopathy. There is an increase in GGT in DMD connected to BMI.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mus.28431","type":"journal-article","created":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T08:55:57Z","timestamp":1748336157000},"page":"240-249","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Serum Creatine Kinase and Transaminase Levels in Duchenne and Becker Muscular Dystrophies"],"prefix":"10.1002","volume":"72","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9949-3954","authenticated-orcid":false,"given":"Marie","family":"Rohlenov\u00e1","sequence":"first","affiliation":[{"name":"Department of Pediatric Neurology, 2nd Faculty of Medicine Charles University and Motol University Hospital  Prague Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kate\u0159ina","family":"Machov\u00e1","sequence":"additional","affiliation":[{"name":"UAM Czech Republic s.r.o  Prague Czech 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Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lenka","family":"Ju\u0159\u00edkov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Children's Neurology, University Hospital Brno And Faculty of Medicine Masaryk University in Brno  Brno Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"Stan\u011bk","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, Faculty Hospital Ostrava  Ostrava Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Petra","family":"Fuchsov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, 2nd Faculty of Medicine Charles University and Motol University Hospital  Prague Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbora","family":"Lauerov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, 2nd Faculty of Medicine Charles University and Motol University Hospital  Prague Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark\u00e9ta","family":"Kumhera","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, 2nd Faculty of Medicine Charles University and Motol University Hospital  Prague Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jana","family":"Haberlov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, 2nd Faculty of Medicine Charles University and Motol University Hospital  Prague Czech 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