{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T17:17:59Z","timestamp":1788887879065,"version":"build-2803163510"},"reference-count":33,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,28]],"date-time":"2022-01-28T00:00:00Z","timestamp":1643328000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JPM"],"abstract":"<jats:p>Understanding the meaning of parvovirus B19 (PB19V) in an etiology of dilated cardiomyopathy (DCM) is difficult. Viruses change the dynamics of the mitochondria by interfering with the mitochondrial process\/function, causing the alteration of mitochondrial morphology. In this study, the ultrastructural changes in the mitochondria in endomyocardial biopsy (EMB) samples from patients with DCM and PB19V were determined. Methods: The PB19V evaluation was performed in EMB specimens by real-time PCR in 20 patients (age: 28 \u00b1 6 years). The biopsy specimens were examined by histo- and immunohistochemistry to detect the inflammatory response. The ultrastructural features of the mitochondria were evaluated by electron microscopy. Results: The presence of PB19V in the heart tissue without the presence of inflammatory process, defined according to Dallas and immunohistochemical criteria, was associated with ultrastructural changes in the mitochondria. Distinctive ultrastructural pathologies were indicated, such as the presence of mitochondria in the vicinity of the expanded sarcoplasmic reticulum with amorphous material, blurred structure of mitochondria, interrupted outer mitochondrial membrane and mitophagy. Conclusions: Extending diagnostics with ultrastructural analysis of biopsy samples provides new knowledge of the changes associated with the presence of PB19V in the heart tissue. The observed changes can be a basis for searching for the damage mechanisms, as well as for new therapeutic solutions.<\/jats:p>","DOI":"10.3390\/jpm12020177","type":"journal-article","created":{"date-parts":[[2022,1,29]],"date-time":"2022-01-29T05:26:17Z","timestamp":1643433977000},"page":"177","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Ultrastructural Changes in Mitochondria in Patients with Dilated Cardiomyopathy and Parvovirus B19 Detected in Heart Tissue without Myocarditis"],"prefix":"10.3390","volume":"12","author":[{"given":"Agnieszka","family":"Pawlak","sequence":"first","affiliation":[{"name":"Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland"},{"name":"Department of Applied Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7409-1799","authenticated-orcid":false,"given":"Magdalena","family":"Gewartowska","sequence":"additional","affiliation":[{"name":"Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0868-0018","authenticated-orcid":false,"given":"Maciej","family":"Przybylski","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology, Medical University of Warsaw, 02-004 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4726-0657","authenticated-orcid":false,"given":"Mateusz","family":"Kuffner","sequence":"additional","affiliation":[{"name":"Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland"},{"name":"Division of Cardiology, Health Care Facility of the Ministry of Interior and Administration in Rzeszow, 35-111 Rzeszow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Diana","family":"Wilig\u00f3rska","sequence":"additional","affiliation":[{"name":"Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9041-3313","authenticated-orcid":false,"given":"Robert","family":"Gil","sequence":"additional","affiliation":[{"name":"Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zbigniew","family":"Kr\u00f3l","sequence":"additional","affiliation":[{"name":"Central Clinical Hospital of the Ministry of the Interior and Administration in Warsaw, 02-507 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Malgorzata","family":"Frontczak-Baniewicz","sequence":"additional","affiliation":[{"name":"Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"779","DOI":"10.1016\/j.jacc.2011.09.074","article-title":"Update on myocarditis","volume":"59","author":"Kindermann","year":"2012","journal-title":"J. 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