PMID- 30622476 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 9 DP - 2018 TI - Identification of Cardiomyopathy-Associated Circulating miRNA Biomarkers in Muscular Dystrophy Female Carriers Using a Complementary Cardiac Imaging and Plasma Profiling Approach. PG - 1770 LID - 10.3389/fphys.2018.01770 [doi] LID - 1770 AB - Background: Different from males with Duchenne/Becker muscular dystrophy (DMD/BMD) in whom overt myopathy is the rule, muscular dystrophy (MD) female carriers are mostly free of skeletal muscle symptoms. However, similar to MD males, these females are also prone to cardiomyopathy. Since circulating microRNAs (miRNAs) have been proposed as diagnostic biomarkers for various cardiovascular diseases, the aim of the current study was to identify specific circulating miRNAs in the plasma of female DMD/BMD carriers that may allow an early and accurate diagnosis of cardiac involvement in these cases. Methods: Twenty-nine female MD carriers and 24 age-matched healthy female controls were prospectively enrolled. All MD carriers and controls underwent comprehensive cardiovascular magnetic resonance (CMR) studies as well as venous blood sampling on the same day. Results: An impaired left ventricular (LV) systolic function was detected in 4 (14%) MD carriers while late gadolinium enhancement (LGE) indicative of myocardial fibrosis was present in 13 female patients (45%)-with an exclusively non-ischemic pattern. Among the circulating miRNAs examined, six were significantly up-regulated in MD carriers compared to female controls: miR-206 (103-fold increase, p < 0.0001), miR-222 (41-fold, p < 0.0001), miR-26a (fourfold, p = 0.029), miR-342 (27-fold, p < 0.0001), miR-378a-3p (minimum 3,600-fold; almost undetectable in controls, p = 0.013), miR-378a-5p (64-fold, p < 0.0001); only two miRNAs were substantially down-regulated in MD carriers: miR-144 (p < 0.0001) and miR-29a (p = 0.002) (both undetectable in carriers). A significant down-regulation of the miR-29c (<0.001-fold, p = 0.006) was observed in MD carriers with abnormal CMR findings (comprising functional and/or structural abnormalities) compared to those with normal CMR examinations. Univariable analyses regarding the presence of abnormal CMR findings resulted in four significant variables: LV end-diastolic volume index (EDVi), LV end-systolic volume index (ESVi), an elevated plasma creatine kinase (CK), and decreased serum miR-29c levels. In subsequent multivariable analysis, the only independent predictor for an abnormal CMR among MD carriers was circulating miR-29c (OR 0.99, 95% CI 0.98-0.99, p = 0.037). Moreover, an elevated CK and/or a downregulated miR-29c level (<0.05 x 10(-3)) resulted in an improved AUC value of 0.79 (0.62-0.97, p = 0.007) (79, 80 and 80%, sensitivity, specificity and overall accuracy) for the CMR-based diagnosis of cardiomyopathy in MD carriers when compared to using the two parameters individually. Conclusion: In female MD carriers, down-regulation of circulating miR-29c relates to the presence of functional and/or structural cardiac abnormalities (as detected by CMR) and appears to be a promising novel biomarker-in addition to conventional CK plasma levels-for an early diagnosis of cardiomyopathy. FAU - Florian, Anca AU - Florian A AD - Department of Cardiology, University Hospital Munster, Munster, Germany. FAU - Patrascu, Alexandru AU - Patrascu A AD - Division of Cardiology, Robert-Bosch-Hospital, Stuttgart, Germany. FAU - Tremmel, Roman AU - Tremmel R AD - Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany. FAU - Rosch, Sabine AU - Rosch S AD - Division of Cardiology, Robert-Bosch-Hospital, Stuttgart, Germany. FAU - Sechtem, Udo AU - Sechtem U AD - Division of Cardiology, Robert-Bosch-Hospital, Stuttgart, Germany. FAU - Schwab, Matthias AU - Schwab M AD - Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany. AD - Department of Clinical Pharmacology, Institute of Experimental and Clinical Pharmacology and Toxicology, University Hospital Tubingen, Tubingen, Germany. AD - Department of Pharmacy and Biochemistry, University of Tubingen, Tubingen, Germany. FAU - Schaeffeler, Elke AU - Schaeffeler E AD - Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany. FAU - Yilmaz, Ali AU - Yilmaz A AD - Department of Cardiology, University Hospital Munster, Munster, Germany. LA - eng PT - Journal Article DEP - 20181221 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC6308188 OTO - NOTNLM OT - cardiomyopathy OT - cardiovascular magnetic resonance OT - female carriers OT - microRNA OT - muscular dystrophy EDAT- 2019/01/10 06:00 MHDA- 2019/01/10 06:01 PMCR- 2018/12/21 CRDT- 2019/01/10 06:00 PHST- 2018/08/14 00:00 [received] PHST- 2018/11/23 00:00 [accepted] PHST- 2019/01/10 06:00 [entrez] PHST- 2019/01/10 06:00 [pubmed] PHST- 2019/01/10 06:01 [medline] PHST- 2018/12/21 00:00 [pmc-release] AID - 10.3389/fphys.2018.01770 [doi] PST - epublish SO - Front Physiol. 2018 Dec 21;9:1770. doi: 10.3389/fphys.2018.01770. eCollection 2018.