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Adriano MRG, Bortolai A, Madia FAR, da Silva Carvalho GF, Nascimento AM, Zanardo EA, Wolff BM, Waisberg J, Bos-Mikich A, Kulikowski LD, Dias AT. Cytogenetics investigation in 151 Brazilian infertile male patients and genomic analysis in selected cases: experience of 14 years in a public genetic service. BMC Res Notes 2024; 17:67. [PMID: 38444014 PMCID: PMC10916190 DOI: 10.1186/s13104-024-06710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 01/31/2024] [Indexed: 03/07/2024] Open
Abstract
OBJECTIVES Male infertility accounts for approximately 30% of cases of reproductive failure. The characterization of genetic variants using cytogenomic techniques is essential for the adequate clinical management of these patients. We aimed to conduct a cytogenetic investigation of numerical and structural rearrangements and a genomic study of Y chromosome microdeletions/microduplications in infertile men derived from a single centre with over 14 years of experience. RESULTS We evaluated 151 infertile men in a transversal study using peripheral blood karyotypes and 15 patients with normal karyotypes through genomic investigation by multiplex ligation-dependent probe amplification (MLPA) or polymerase chain reaction of sequence-tagged sites (PCR-STS) techniques. Out of the 151 patients evaluated by karyotype, 13 presented chromosomal abnormalities: two had numerical alterations, and 11 had structural chromosomal rearrangements. PCR-STS detected a BPY2 gene region and RBMY2DP pseudogene region microdeletion in one patient. MLPA analysis allowed the identification of one patient with CDY2B_1 and CDY2B_2 probe duplications (CDY2B and NLGN4Y genes) and one patient with BPY2_1, BPY2_2, and BPY2_4 probe duplications (PRY and RBMY1J genes).
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Affiliation(s)
- Márcia Regina Gimenes Adriano
- Laboratório de Citogenética, Serviço de Laboratório de Análises Clínicas, Instituto de Assistência Médica do Servidor Público do Estado de São Paulo (IAMSPE), São Paulo, SP, 04039-901, Brasil.
| | - Adriana Bortolai
- Laboratório de Citogenética, Serviço de Laboratório de Análises Clínicas, Instituto de Assistência Médica do Servidor Público do Estado de São Paulo (IAMSPE), São Paulo, SP, 04039-901, Brasil
| | - Fabricia Andreia Rosa Madia
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Gleyson Francisco da Silva Carvalho
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Amom Mendes Nascimento
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Evelin Aline Zanardo
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Beatriz Martins Wolff
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Jaques Waisberg
- Laboratório de Citogenética, Serviço de Laboratório de Análises Clínicas, Instituto de Assistência Médica do Servidor Público do Estado de São Paulo (IAMSPE), São Paulo, SP, 04039-901, Brasil
| | - Adriana Bos-Mikich
- Departamento de Ciências Morfológicas, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, 90050-170, Brasil
| | - Leslie Domenici Kulikowski
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
| | - Alexandre Torchio Dias
- Laboratório de Citogenética, Serviço de Laboratório de Análises Clínicas, Instituto de Assistência Médica do Servidor Público do Estado de São Paulo (IAMSPE), São Paulo, SP, 04039-901, Brasil
- Laboratório de Citogenômica, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, 05403-000, Brasil
- Universidade Paulista - UNIP - Instituto de Ciências da Saúde - Curso de Biomedicina, São Paulo, Brasil
- CITOGEM Biotecnologia, São Paulo, Brasil
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Ralapanawe MSB, Gajaweera SL, Karunaratne N, Dissnayake VHW, Price MJ, Melo P, Coomarasamy A, Gallos ID. A comprehensive analysis of chromosomal polymorphic variants on reproductive outcomes after intracytoplasmic sperm injection treatment. Sci Rep 2023; 13:1319. [PMID: 36693931 PMCID: PMC9873903 DOI: 10.1038/s41598-023-28552-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/19/2023] [Indexed: 01/25/2023] Open
Abstract
Recent studies suggest that chromosomal polymorphic variations are associated with infertility. A systematic review of chromosomal polymorphisms in assisted reproduction found an association with higher rates of miscarriage. Aim of this study is to analyse the influence of specific types or number of chromosomal polymorphic variations on reproductive outcomes of couples undergoing ICSI treatment. We analysed data from 929 fresh and frozen embryo transfer cycles of 692 women who underwent karyotyping analysis using Giemsa-Trypsin-Leishman (GTL) banding prior to the ICSI procedure at the Fertility Centre of Lanka Hospitals Corporation Plc, Sri Lanka, from January 2016 to December 2018. The outcomes of interest were the pregnancy, miscarriage and live birth rate per cycle. There was no evidence of a difference in the reproductive outcomes between carriers or non-carriers of any type or number of chromosomal polymorphic variation. Our data, in contrast to previous studies, does not support a deleterious effect for the type or number of chromosomal polymorphic variations on reproductive outcomes. However, additional prospective, adequately powered studies, conducted in multiethnic populations, are required to further investigate whether the detection of chromosomal polymorphic variants prior to assisted conception may in fact be a futile diagnostic tool.
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Affiliation(s)
- Madara S B Ralapanawe
- Tommy's National Centre for Miscarriage Research, Institute of Metabolism and Systems Research, Institute of Translational Medicine (ITM), University of Birmingham, 4th floor, Edgbaston, Birmingham, B15 2TT, UK. .,Fertility Centre, Lanka Hospitals Corporation Plc, 578, Elvitigala Mawatha, Colombo, 00500, Sri Lanka.
| | - Sugandika L Gajaweera
- Fertility Centre, Lanka Hospitals Corporation Plc, 578, Elvitigala Mawatha, Colombo, 00500, Sri Lanka
| | - Nishendra Karunaratne
- Fertility Centre, Lanka Hospitals Corporation Plc, 578, Elvitigala Mawatha, Colombo, 00500, Sri Lanka
| | - Vajira H W Dissnayake
- Department of Anatomy, Genetics and Biomedical Informatics, Faculty of Medicine, University of Colombo, Colombo, 00800, Sri Lanka
| | - Malcolm J Price
- Institute of Applied Health Research, University of Birmingham, Birmingham, B15 2TT, UK.,NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, Birmingham, B15 2TH, UK
| | - Pedro Melo
- Tommy's National Centre for Miscarriage Research, Institute of Metabolism and Systems Research, Institute of Translational Medicine (ITM), University of Birmingham, 4th floor, Edgbaston, Birmingham, B15 2TT, UK
| | - Arri Coomarasamy
- Tommy's National Centre for Miscarriage Research, Institute of Metabolism and Systems Research, Institute of Translational Medicine (ITM), University of Birmingham, 4th floor, Edgbaston, Birmingham, B15 2TT, UK
| | - Ioannis D Gallos
- Tommy's National Centre for Miscarriage Research, Institute of Metabolism and Systems Research, Institute of Translational Medicine (ITM), University of Birmingham, 4th floor, Edgbaston, Birmingham, B15 2TT, UK
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Liehr T. Repetitive Elements in Humans. Int J Mol Sci 2021; 22:ijms22042072. [PMID: 33669810 PMCID: PMC7922087 DOI: 10.3390/ijms22042072] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 12/21/2022] Open
Abstract
Repetitive DNA in humans is still widely considered to be meaningless, and variations within this part of the genome are generally considered to be harmless to the carrier. In contrast, for euchromatic variation, one becomes more careful in classifying inter-individual differences as meaningless and rather tends to see them as possible influencers of the so-called 'genetic background', being able to at least potentially influence disease susceptibilities. Here, the known 'bad boys' among repetitive DNAs are reviewed. Variable numbers of tandem repeats (VNTRs = micro- and minisatellites), small-scale repetitive elements (SSREs) and even chromosomal heteromorphisms (CHs) may therefore have direct or indirect influences on human diseases and susceptibilities. Summarizing this specific aspect here for the first time should contribute to stimulating more research on human repetitive DNA. It should also become clear that these kinds of studies must be done at all available levels of resolution, i.e., from the base pair to chromosomal level and, importantly, the epigenetic level, as well.
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Affiliation(s)
- Thomas Liehr
- Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, D-07747 Jena, Germany
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