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Alksere B, Grinfelde I, Kornejeva L, Dzalbs A, Vedmedovska N, Kovalova I, Conka U, Andersone S, Krasucka S, Blumberga A, Berzina D, Fodina V. The outcomes after transfers of embryos with chromosomal mosaicism: a single reproductive medicine center experience at iVF Riga clinic. Gynecol Endocrinol 2020; 36:53-57. [PMID: 33305664 DOI: 10.1080/09513590.2020.1816719] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Aim: The aim of this study is to summarize the outcomes of transfers of mosaic embryos, which were classified according to guidelines and in strong collaboration of reproductologists, clinical geneticists and patients approved as suitable for transfer. Material and Methods: Retrospective data were collected from 70 patients from a private IVF center to whom embryos with mosaic changes in chromosomal material were transferred from 2015 to 2019. Results and Conclusion: Implantation outcomes and continuing pregnancies showed slight differences, when compared to fully normal embryos. Artifacts have to be differentiated from undeniable aberrations, and correct interpretation of results must be done with following patient counselling and prenatal testing if necessary.
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Affiliation(s)
| | - Ieva Grinfelde
- Clinic 'iVF-Riga', Riga, Latvia
- Children's Clinical University Hospital, Riga, Latvia
| | | | - Aigars Dzalbs
- Clinic 'iVF-Riga', Riga, Latvia
- Children's Clinical University Hospital, Riga, Latvia
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Daneberga Z, Berzina D, Borosenko V, Krumina Z, Kokaine-Sapovalova L, Gardovskis A, Berga-Svitina E, Gardovskis J, Miklasevics E. Pathogenic APC Variants in Latvian Familial Adenomatous Polyposis Patients. ACTA ACUST UNITED AC 2019; 55:medicina55100612. [PMID: 31547110 PMCID: PMC6843383 DOI: 10.3390/medicina55100612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/16/2019] [Accepted: 09/18/2019] [Indexed: 01/02/2023]
Abstract
Background and objectives: Familial adenomatous polyposis is one of the APC-associated polyposis conditions described as genetically predetermined colorectal polyposis syndrome with a variety of symptoms. The purpose of this study was to determine sequence variants of the APC gene in patients with familial adenomatous polyposis (FAP) phenotype and positive or negative family history. Materials and Methods: Eight families with defined criteria of adenomatous polyposis underwent molecular genetic testing. Coding regions and flanking intron regions of the APC gene were analyzed by Sanger sequencing. Results: Eight allelic variants of the APC gene coding sequence were detected. All allelic variants of the APC gene were predicted to be pathogenic based on criteria according to the “Joint Consensus Recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology” (2015), four of them c.1586_1587insAT, c.2336delT, c.3066_3067insGA, and c.4303_4304insC, were considered novel. Conclusions: The timely molecular genetic analysis of APC germline variants and standardized interpretation of the pathogenicity of novel allelic variants has a high impact on choice for treatment, cancer prevention, and family genetic counseling.
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Affiliation(s)
- Zanda Daneberga
- Institute of Oncology, Riga Stradiņš University, LV-1007 Riga, Latvia.
| | - Dace Berzina
- Institute of Oncology, Riga Stradiņš University, LV-1007 Riga, Latvia
| | - Viktors Borosenko
- Department of Surgery, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia
| | - Zita Krumina
- Department of Biology and Microbiology, Riga Stradiņš University, LV-1007 Riga, Latvia
| | | | - Andris Gardovskis
- Institute of Oncology, Riga Stradiņš University, LV-1007 Riga, Latvia
- Department of Surgery, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia
| | | | - Janis Gardovskis
- Department of Surgery, Riga Stradiņš University, LV-1007, Riga, Latvia
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Dudorova A, Alksere B, Berzina D, Dzalbs A, Andersone S, Kornejeva L, Grinfelde I, Conka U, Blumberga A, Krasucka S, Pīmane E, Fodina V. 35. THE APPLICATION OF PGT-A FOR CARRIERS OF BALANCED STRUCTURAL CHROMOSOMAL REARRANGEMENTS. Reprod Biomed Online 2019. [DOI: 10.1016/j.rbmo.2019.04.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pirsko V, Cakstina I, Priedīte M, Berzina D, Nitisa D, Nakazawa-Miklasevica M, Daneberga Z, Miklasevics E. PO-227 The effect of chronic mild hypoxia on genomic instability in HER2-overexpression breast cancer cell line SK-BR-3. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Lazareva A, Eglite J, Zadoroznijs S, Davidsone Z, Santere R, Berzina D, Staneivca V. AB0218 IL-6, IL-1A and TNF-α Gene Polimorphism in Children with Juvenile Idiopathic Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Reste J, Zvigule G, Zvagule T, Kurjane N, Eglite M, Gabruseva N, Berzina D, Plonis J, Miklasevics E. Telomere length in Chernobyl accident recovery workers in the late period after the disaster. J Radiat Res 2014; 55:1089-100. [PMID: 25015931 PMCID: PMC4229925 DOI: 10.1093/jrr/rru060] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 06/08/2014] [Accepted: 06/09/2014] [Indexed: 05/02/2023]
Abstract
The outcome of the Chernobyl nuclear power plant (CNPP) accident was that a huge number of people were exposed to ionizing radiation. Previous studies of CNPP clean-up workers from Latvia revealed a high occurrence of age-associated degenerative diseases and cancer in young adults, as well as a high mortality as a result of cardiovascular disorders at age 45-54 years. DNA tandem repeats that cap chromosome ends, known as telomeres, are sensitive to oxidative damage and exposure to ionizing radiation. Telomeres are important in aging processes and carcinogenesis. The aim of this study was to investigate the long-term effect of protracted ionizing radiation exposure on telomere length in CNPP clean-up workers. Relative telomere length (RTL) was measured in peripheral blood leukocytes of 595 CNPP clean-up workers and 236 gender- and age-matched controls using real-time quantitative polymerase chain reaction (q-PCR). Close attention was paid to participation year and tasks performed during the worker's stay in Chernobyl, health status, and RTL differences between subgroups. Telomere shortening was not found in CNPP clean-up workers; on the contrary, their RTL was slightly greater than in controls (P = 0.001). Longer telomeres were found in people who worked during 1986, in those undertaking 'dirty' tasks (digging and deactivation), and in people with cancer. Shorter telomeres appeared frequently in those with cataract, osteoporosis, atherosclerosis, or coronary heart disease. We conclude that the longer telomeres revealed in people more heavily exposed to ionizing radiation probably indicate activation of telomerase as a chromosome healing mechanism following damage, and reflect defects in telomerase regulation that could potentiate carcinogenesis.
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Affiliation(s)
- Jelena Reste
- Institute of Occupational Safety and Environmental Health, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia Centre of Occupational and Radiological Medicine, Pauls Stradins Clinical University Hospital, Pilsonu Street 13, Riga, LV-1002, Latvia
| | - Gunda Zvigule
- Institute of Oncology, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia
| | - Tija Zvagule
- Institute of Occupational Safety and Environmental Health, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia Centre of Occupational and Radiological Medicine, Pauls Stradins Clinical University Hospital, Pilsonu Street 13, Riga, LV-1002, Latvia
| | - Natalja Kurjane
- Institute of Occupational Safety and Environmental Health, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia Centre of Occupational and Radiological Medicine, Pauls Stradins Clinical University Hospital, Pilsonu Street 13, Riga, LV-1002, Latvia
| | - Maija Eglite
- Institute of Occupational Safety and Environmental Health, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia Centre of Occupational and Radiological Medicine, Pauls Stradins Clinical University Hospital, Pilsonu Street 13, Riga, LV-1002, Latvia
| | - Natalija Gabruseva
- Centre of Occupational and Radiological Medicine, Pauls Stradins Clinical University Hospital, Pilsonu Street 13, Riga, LV-1002, Latvia
| | - Dace Berzina
- Institute of Oncology, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia
| | - Juris Plonis
- Institute of Oncology, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia
| | - Edvins Miklasevics
- Institute of Oncology, Riga Stradins University, Dzirciema Street 16, Riga, LV-1007, Latvia
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Davidsone Z, Eglite E, Dzelzite S, Lazareva A, Santere R, Berzina D, Stanevicha V. HLA II class alleles in juvenile idiopathic arthritis patients with temporomandibular joint involvement. Pediatr Rheumatol Online J 2014. [PMCID: PMC4184209 DOI: 10.1186/1546-0096-12-s1-p24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Dymerska D, Kurzawski G, Suchy J, Roomere H, Toome K, Metspalu A, Janavičius R, Elsakov P, Irmejs A, Berzina D, Miklaševičs E, Gardovskis J, Rebane E, Kelve M, Kładny J, Huzarski T, Gronwald J, Dębniak T, Byrski T, Stembalska A, Surdyka D, Siołek M, Szwiec M, Banaszkiewicz Z, Wiśniowski R, Kilar E, Scott R, Lubiński J. Lynch syndrome mutations shared by the Baltic States and Poland. Clin Genet 2013; 86:190-3. [DOI: 10.1111/cge.12251] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 08/07/2013] [Accepted: 08/07/2013] [Indexed: 11/30/2022]
Affiliation(s)
- D. Dymerska
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - G. Kurzawski
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - J. Suchy
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | | | - K. Toome
- Insitute of Biomedicine, Faculty of Medicine; University of Tartu; Tartu Estonia
| | - A. Metspalu
- The Estonian Academy of Sciences; Tallinn Estonia
- Institute of Molecular and Cell Biology
- Estonian Genome Centre of University of Tartu; University of Tartu; Tartu Estonia
| | - R. Janavičius
- Department of Molecular and Regenerative Medicine; Hematology, Oncology and Transfusion Medicine Center; Vilnius University Hospital Santariskiu Clinics; Vilnius Lithuania
- State Research Institute; Innovative Medicine Center; Vilnius Lithuania
| | - P. Elsakov
- State Research Institute; Innovative Medicine Center; Vilnius Lithuania
| | - A. Irmejs
- Hereditary Cancer Institute; Riga Stradins University; Riga Latvia
- Pauls Stradins Clinical University Hospital; Riga Latvia
| | - D. Berzina
- Hereditary Cancer Institute; Riga Stradins University; Riga Latvia
- Pauls Stradins Clinical University Hospital; Riga Latvia
| | - E. Miklaševičs
- Hereditary Cancer Institute; Riga Stradins University; Riga Latvia
- Pauls Stradins Clinical University Hospital; Riga Latvia
| | - J. Gardovskis
- Hereditary Cancer Institute; Riga Stradins University; Riga Latvia
- Pauls Stradins Clinical University Hospital; Riga Latvia
| | - E. Rebane
- Competence Centre for Cancer Research; Tallinn Estonia
| | - M. Kelve
- Department of Gene Technology; Tallinn University of Technology; Tallinn Estonia
| | - J. Kładny
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - T. Huzarski
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - J. Gronwald
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - T. Dębniak
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - T. Byrski
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
| | - A. Stembalska
- Department of Genetics; Medical University; Wrocław Poland
| | - D. Surdyka
- Radiotherapy Department with Therapy and Brachytherapy Unit; Oncology Center; Lublin Poland
| | - M. Siołek
- Holy Cross Oncology Center; Kielce Poland
| | - M. Szwiec
- Regional Oncology Center; Opole Poland
| | - Z. Banaszkiewicz
- Department of Surgery, Collegium Medicum; Nicolaus Copernicus University; Bydgoszcz Poland
| | | | - E. Kilar
- Regional Oncology Center; Świdnica Poland
| | - R.J. Scott
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
- Discipline of Medical Genetics, Faculty of Health; University of Newcastle and the Hunter Medical Research Institute; Newcastle Australia
- Division of Genetics, Hunter Area Pathology Service; John Hunter Hospital; Newcastle Australia
| | - J. Lubiński
- Department of Genetics and Pathology, International Hereditary Cancer Center; Pomeranian Medical University; Szczecin Poland
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Berzina D, Nakazawa-Miklasevica M, Zestkova J, Aksenoka K, Irmejs A, Gardovskis A, Kalniete D, Gardovskis J, Miklasevics E. BRCA1/2 mutation screening in high-risk breast/ovarian cancer families and sporadic cancer patient surveilling for hidden high-risk families. BMC Med Genet 2013; 14:61. [PMID: 23767878 PMCID: PMC3686592 DOI: 10.1186/1471-2350-14-61] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 06/11/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND The estimated ratio of hereditary breast/ovarian cancer (HBOC) based on family history is 1.5% in Latvia. This is significantly lower than the European average of 5-10%. Molecular markers like mutations and SNPs can help distinguish HBOC patients in the sporadic breast and ovarian cancer group. METHODS 50 patients diagnosed with HBOC in the Latvian Cancer Registry from January 2005 to December 2008 were screened for BRCA1 founder mutation-negatives and subjected to targeted resequencing of BRCA1 and BRCA2 genes. The newly found mutations were screened for in the breast and ovarian cancer group of 1075 patients by Real Time-PCR/HRM analysis and RFLP. RESULTS Four BRCA2 mutations including three novel BRCA2 frameshift mutations and one previously known BRCA2 frameshift mutation and one BRCA1 splicing mutation were identified. Two of the BRCA2 mutations were found in a group of consecutive breast cancer patients with a frequency of 0.51% and 0.38%. CONCLUSIONS Molecular screening of sequential cancer patients is an important tool to identify HBOC families.
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Affiliation(s)
- Dace Berzina
- Institute of Oncology, Riga Stradins University, Dzirciema Street 16, LV1007 Riga, Latvia
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Cupane L, Pugacova N, Berzina D, Cauce V, Gardovska D, Miklaševics E. Patients with Panton-Valentine leukocidin positive Staphylococcus aureus infections run an increased risk of longer hospitalisation. Int J Mol Epidemiol Genet 2012; 3:48-55. [PMID: 22493751 PMCID: PMC3316447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 02/23/2012] [Indexed: 05/31/2023]
Abstract
Staphylococcus aureus is a major cause of purulent infections. The spectrum of staphylococcal infections varies from mild superficial to invasive life-threatening diseases due to S. aureus ability to produce a wide range of virulence factors, including toxins. A prospective observational study was conducted in the Children Clinical University Hospital in Riga, Latvia. During a period of sixteen months from November 2006 to March 2008 224 S. aureus isolates were collected. Our study revealed that Panton-Valentine leukocidine (PVL) genes are carried by a high number (75%) of S. aureus isolates recovered from children hospitalised in the Children Clinical University hospital. Most of these isolates were associated with abscesses and other skin and soft tissue infections. Patients with PVL positive invasive infections stayed significantly longer in hospital than patients with PVL negative invasive infections. Clonal distribution of PVL positive S. aureus isolates were closely related, which provides evidence for the wide spread of PVL producing spa type t435 and ST121 staphylococci in community.
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Affiliation(s)
- L. Cupane
- Children Clinical University HospitalRiga, Latvia
- Riga Stradins UniversityLatvia
| | - N. Pugacova
- Children Clinical University HospitalRiga, Latvia
| | - D. Berzina
- P. Stradins Clinical University HospitalRiga, Latvia
| | | | - D. Gardovska
- Children Clinical University HospitalRiga, Latvia
- Riga Stradins UniversityLatvia
| | - E. Miklaševics
- P. Stradins Clinical University HospitalRiga, Latvia
- Riga Stradins UniversityLatvia
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Guseinova D, Stanevicha V, Shantere R, Berzina D, Schegolevs A, Balode D, Uruma A. Comparable efficacy and safety of treatment with biological agents etanercept and anakinra in children with Juvenile Idiopathic Arthritis in Latvia. Joint Bone Spine 2008. [DOI: 10.1016/j.jbspin.2008.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Guseinova D, Stanevicha V, Eglite J, Sochnevs A, Shantere R, Berzina D, Schegolevs A. HLA I class B 27 antigen subtypes in children with Juvenile Idiopathic Arthritis in Latvia. Joint Bone Spine 2007. [DOI: 10.1016/j.jbspin.2007.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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