PMID- 35207664 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220228 IS - 2075-4426 (Print) IS - 2075-4426 (Electronic) IS - 2075-4426 (Linking) VI - 12 IP - 2 DP - 2022 Jan 28 TI - Ultrastructural Changes in Mitochondria in Patients with Dilated Cardiomyopathy and Parvovirus B19 Detected in Heart Tissue without Myocarditis. LID - 10.3390/jpm12020177 [doi] LID - 177 AB - 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 +/- 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. FAU - Pawlak, Agnieszka AU - Pawlak A AD - Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland. AD - Department of Applied Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland. FAU - Gewartowska, Magdalena AU - Gewartowska M AUID- ORCID: 0000-0002-7409-1799 AD - Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland. FAU - Przybylski, Maciej AU - Przybylski M AUID- ORCID: 0000-0002-0868-0018 AD - Department of Medical Microbiology, Medical University of Warsaw, 02-004 Warsaw, Poland. FAU - Kuffner, Mateusz AU - Kuffner M AUID- ORCID: 0000-0002-4726-0657 AD - Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland. AD - Division of Cardiology, Health Care Facility of the Ministry of Interior and Administration in Rzeszow, 35-111 Rzeszow, Poland. FAU - Wiligorska, Diana AU - Wiligorska D AD - Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland. FAU - Gil, Robert AU - Gil R AUID- ORCID: 0000-0002-9041-3313 AD - Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, 02-507 Warsaw, Poland. FAU - Krol, Zbigniew AU - Krol Z AD - Central Clinical Hospital of the Ministry of the Interior and Administration in Warsaw, 02-507 Warsaw, Poland. FAU - Frontczak-Baniewicz, Malgorzata AU - Frontczak-Baniewicz M AD - Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland. LA - eng PT - Journal Article DEP - 20220128 PL - Switzerland TA - J Pers Med JT - Journal of personalized medicine JID - 101602269 PMC - PMC8880015 OTO - NOTNLM OT - dilated cardiomyopathy OT - electron microscopy OT - mitochondria OT - parvovirus B19 OT - viral infection COIS- The authors declare no conflict of interest. EDAT- 2022/02/26 06:00 MHDA- 2022/02/26 06:01 PMCR- 2022/01/28 CRDT- 2022/02/25 01:12 PHST- 2021/12/09 00:00 [received] PHST- 2022/01/12 00:00 [revised] PHST- 2022/01/20 00:00 [accepted] PHST- 2022/02/25 01:12 [entrez] PHST- 2022/02/26 06:00 [pubmed] PHST- 2022/02/26 06:01 [medline] PHST- 2022/01/28 00:00 [pmc-release] AID - jpm12020177 [pii] AID - jpm-12-00177 [pii] AID - 10.3390/jpm12020177 [doi] PST - epublish SO - J Pers Med. 2022 Jan 28;12(2):177. doi: 10.3390/jpm12020177.