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Meister S, Kellner I, Beyer S, Corradini S, Schulz C, Rogenhofer N, Keilmann L, Kolben TM, Mahner S, Kessler M, Jeschke U, Kolben T. Epigenetic changes occur in placentas of spontaneous and recurrent miscarriages. J Reprod Immunol 2021; 149:103466. [PMID: 34929495 DOI: 10.1016/j.jri.2021.103466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/18/2021] [Accepted: 12/12/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND In contrast to genetic abnormalities which are well known to be responsible for around 50 % of human miscarriages, there is very few data about epigenetic alterations in spontaneous and recurrent miscarriages (SM, RM). The aim of this study was to analyze the histone modification marks H3K9ac and H3K4me3 in SM and RM. METHODS The abundance of histone modifications H3K4me3/H3K9ac was analyzed by western blot in frozen abortion material of SM and RM compared to a control group of legal pregnancy terminations. Further, to characterize placental tissue cells expressing H3K4me3/H3K9ac immunohistochemistry (IHC) and immunofluorescence was performed in 20 SM, 19 RM and 26 controls. RESULTS The western blot data showed a tendency to an overall reduction of H3K4me3/H3K9ac, in the placental tissue of particularly SM. Further we differentiated between syncytiotrophoblast, cytotrophoblast and decidual cells and found a significant decrease of H3K4me3 in SM in cytotrophoblast cells and syncytial stroma. In RM H3K4me3 was downregulated exclusively in the syncytiotrophoblast. H3K9ac was reduced in SM and RM in all evaluated compartments, except from the syncytiotrophoblast. CONCLUSION Our study showed an overall reduced histone modification of H3K4me3 and H3K9ac in the placental tissue of SM. Concerning RM, particularly the reduction of H3K9ac was detected in the placental tissue, indicating that RM group has distinct profile in epigenetic regulation. Whether these histone modifications are part of a possible pathophysiologic cascade during SM and RM or are merely indicating a defective placentation, cannot be concluded from this study.
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Affiliation(s)
- Sarah Meister
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany; Walter-Brendel-Centre of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany.
| | - Isabel Kellner
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Susanne Beyer
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Germany
| | - Christian Schulz
- Medizinische Klinik und Poliklinik I, Klinikum der Universität, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Nina Rogenhofer
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lucia Keilmann
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Theresa Maria Kolben
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Mirjana Kessler
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany; Department of Gynecology and Obstetrics, University Hospital Augsburg, Stenglinstraße 2, 86156, Augsburg, Germany
| | - Thomas Kolben
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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Bubalo P, Buterin I, Šalek Z, Ðogić V, Zupančić-Šalek S. Association of Plasminogen Activator Inhibitor-1 Gene Polymorphisms and Methylene Tetrahydrofolate Reductase Polymorphisms with Spontaneous Miscarriages. Acta Haematol 2017; 138:111-115. [PMID: 28858863 DOI: 10.1159/000478084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/06/2017] [Indexed: 01/08/2023]
Abstract
AIM The objective of this study was to investigate a possible correlation between the plasminogen activator inhibitor-1 (PAI-1) and methylene tetrahydrofolate reductase (MTHFR) polymorphisms and unexplained spontaneous miscarriages (SM). MATERIALS AND METHODS PAI-1 polymorphisms were evaluated in 150 women with pregnancy in their history. One hundred women with a history of SM formed the study group and 50 women with normal pregnancies served as the control group. Also, the combination of PAI-1 and MTHFR polymorphisms were evaluated in 138 women out of a total of 150, which included 92 women with SM in their history compared to 46 women in the control group. For statistical analysis, χ2 test, Phi, and Cramer V tests were used; p < 0.05 was taken as a statistically significant result. RESULTS Our findings show: (a) the correlation between SM and PAI-1 mutations reaches statistical significance (p = 0.026); (b) there was a statistically significant difference between heterozygous PAI-1 in women with only 1 SM compared to the control group (p = 0.047); (c) the comparison of combinations of both mutations, PAI-1 and MTHFR, with the control group demonstrates statistical significance in favor of women with SM and both mutations (p = 0.022). CONCLUSION PAI-1 and MTHFR polymorphisms may play an important role in pregnancy complications because heterozygous PAI-1 mutations and a combination of both PAI-1 and MTHFR mutations might contribute to SM.
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Affiliation(s)
- Petra Bubalo
- Zagreb County Institute of Emergency Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
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