1
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Karachanak-Yankova S, Serbezov D, Mihaylova M, Nikolova D, Balabanski L, Damyanova V, Antonova O, Staneva R, Ganev M, Spasova V, Rukova B, Nesheva D, Josifovska S, Stancheva M, Belejanska D, Petrova M, Mehrabian S, Traykov L, Hadjidekova S, Toncheva D. Detection of pathogenic variants in Alzheimer’s disease related genes in Bulgarian patients by pooled whole-exome sequencing. BIOTECHNOL BIOTEC EQ 2023. [DOI: 10.1080/13102818.2022.2155572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Sena Karachanak-Yankova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Department of Genetics, Faculty of Biology, Sofia University ‘St. Kliment Ohridski’, Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Marta Mihaylova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | | | - Vera Damyanova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Olga Antonova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Rada Staneva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Mihail Ganev
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Victoria Spasova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Blaga Rukova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Slavica Josifovska
- Department of Molecular Biology, Genetics and Microbiology, Faculty of Natural Sciences and Mathematics, ‘Ss. Cyril and Methodius’ University, Skopje, North Macedonia
| | - Mikaela Stancheva
- Department of Genetics, Faculty of Biology, Sofia University ‘St. Kliment Ohridski’, Sofia, Bulgaria
| | - Diana Belejanska
- Department of Neurology, University Hospital ‘Alexandrovska’, Sofia, Bulgaria
| | - Mariya Petrova
- Department of Neurology, University Hospital ‘Alexandrovska’, Sofia, Bulgaria
| | - Shima Mehrabian
- Department of Neurology, University Hospital ‘Alexandrovska’, Sofia, Bulgaria
| | - Latchezar Traykov
- Department of Neurology, University Hospital ‘Alexandrovska’, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Bulgarian Academy of Sciences, Sofia, Bulgaria
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2
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Atanasoska M, Vazharova R, Stevanović G, Bradinova I, Staykova SY, Balabanski L, Mircheva D, Avdjieva-Tzavella D, Toncheva D. Dopa-responsive dystonia in Bulgarian patients: report of three cases. Eur J Hum Genet 2023:10.1038/s41431-023-01370-4. [PMID: 37165102 DOI: 10.1038/s41431-023-01370-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 04/20/2023] [Indexed: 05/12/2023] Open
Affiliation(s)
- Maya Atanasoska
- GMDL "CellGenetics", Sofia, Bulgaria.
- Department of Genetics, Faculty of Biology, Sofia University St Kliment Ohridski, Sofia, Bulgaria.
| | - Radoslava Vazharova
- GMDL "CellGenetics", Sofia, Bulgaria.
- Department of Biology, Medical genetics and Microbiology, Faculty of Medicine, Sofia University St Kliment Ohridski, Sofia, Bulgaria.
| | - Galina Stevanović
- Clinic of Neurology and Psychiatry for Children and Youth, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Irena Bradinova
- GMDL "CellGenetics", Sofia, Bulgaria
- National Genetic Laboratory, UHOG "Maichin dom" Sofia, Sofia, Bulgaria
| | | | | | | | | | - Draga Toncheva
- GMDL "CellGenetics", Sofia, Bulgaria
- Bulgarian Academy of Science, Sofia, Bulgaria
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3
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Nikolova D, Balabanski L, Serbezov D, Mehrabian S, Petrova M, Traykov L, Toncheva D. Prioritization of Genetic Variants Predisposing to Alzheimer's Disease in Young Healthy Bulgarian Individuals Using Centenarian Exomes. C R Acad Bulg Sci 2023. [DOI: 10.7546/crabs.2023.01.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The present study aims to identify pathogenic/risky variants in the exomes of healthy young individuals predisposing to Alzheimer's disease (AD) by their validation in centenarian's exomes. The group of Bulgarian centenarians included 32 individuals (mean age 102.4) without AD diagnosis and the matched control group of 61 young healthy individuals (mean age 21.9). Two DNA pools were constructed with equimolar amounts of DNA from each participant and whole exome sequencing analysis (WES) was performed. We examined the WES data for pathogenic or risky SNPs predisposing to AD. Of altogether 1929 variants selected from DisGeNet database for association with AD, only 174 (9.02%) were detected in our WES data. One hundred and fifty-two (152) SNPs were present in both studied groups, 8 in centenarians and 14 in controls only. Seven variants have significantly higher frequency in young individuals or absence in centenarians. Based on sufficiently unambiguous literature data, we nominated rs63750264 in APP, rs429358 in APOE, rs1800562 in HFE variants for predisposition to AD in young individuals. To a lesser extent, the carriership of rs2070045 in SORL1, rs6265 in BDNF, rs769449 in APOE, rs4988514 in SST can increase the risk to AD development. These variants could find implication in the Alzheimer's disease estimation in young individuals before the onset of clinical symptoms.
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4
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Pashova S, Balabanski L, Elmadjian G, Savov A, Stoyanova E, Shivarov V, Petrov P, Pashov A. Restriction of the Global IgM Repertoire in Antiphospholipid Syndrome. Front Immunol 2022; 13:865232. [PMID: 35493489 PMCID: PMC9043687 DOI: 10.3389/fimmu.2022.865232] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 03/21/2022] [Indexed: 11/22/2022] Open
Abstract
The typical anti-phospholipid antibodies (APLA) in the anti-phospholipid syndrome (APS) are reactive with the phospholipid-binding protein β2GPI as well as a growing list of other protein targets. The relation of APLA to natural antibodies and the fuzzy set of autoantigens involved provoked us to study the changes in the IgM repertoire in APS. To this end, peptides selected by serum IgM from a 7-residue linear peptide phage display library (PDL) were deep sequenced. The analysis was aided by a novel formal representation of the Igome (the mimotope set reflecting the IgM specificities) in the form of a sequence graph. The study involved women with APLA and habitual abortions (n=24) compared to age-matched clinically healthy pregnant women (n=20). Their pooled Igomes (297 028 mimotope sequences) were compared also to the global public repertoire Igome of pooled donor plasma IgM (n=2 796 484) and a set of 7-mer sequences found in the J regions of human immunoglobulins (n=4 433 252). The pooled Igome was represented as a graph connecting the sequences as similar as the mimotopes of the same monoclonal antibody. The criterion was based on previously published data. In the resulting graph, identifiable clusters of vertices were considered related to the footprints of overlapping antibody cross-reactivities. A subgraph based on the clusters with a significant differential expression of APS patients’ mimotopes contained predominantly specificities underrepresented in APS. The differentially expressed IgM footprints showed also an increased cross-reactivity with immunoglobulin J regions. The specificities underexpressed in APS had a higher correlation with public specificities than those overexpressed. The APS associated specificities were strongly related also to the human peptidome with 1 072 mimotope sequences found in 7 519 human proteins. These regions were characterized by low complexity. Thus, the IgM repertoire of the APS patients was found to be characterized by a significant reduction of certain public specificities found in the healthy controls with targets representing low complexity linear self-epitopes homologous to human antibody J regions.
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Affiliation(s)
- Shina Pashova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria.,Genomics Laboratory, Hospital "Malinov", Sofia, Bulgaria
| | - Gabriel Elmadjian
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Alexey Savov
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Elena Stoyanova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | | | - Peter Petrov
- Institute Mathematics and Informatics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Anastas Pashov
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
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5
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Bradinova I, Andonova S, Vazharova R, Tomova S, Balabanski L, Savov A. Spinal muscular atrophy with congenital bone fractures 2 caused by a rare loss-of-function ASCC1 gene mutation in two Bulgarian Roma patients. Clin Genet 2022; 102:78-79. [PMID: 35338657 DOI: 10.1111/cge.14130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/08/2022] [Accepted: 03/16/2022] [Indexed: 11/27/2022]
Affiliation(s)
- Irena Bradinova
- Department of Obstetrics and Gynecology, National Genetic Laboratory, Medical University Sofia, Sofia, Bulgaria
| | - Silvia Andonova
- Department of Obstetrics and Gynecology, National Genetic Laboratory, Medical University Sofia, Sofia, Bulgaria
| | - Radoslava Vazharova
- Faculty of Medicine, Department of Biology, Medical Genetics and Microbiology, SU "St. Kl. Ohridski", Sofia, Bulgaria
| | - Stiliyana Tomova
- Department of Neonatology, University Hospital MBAL Bourgas, Burgas, Bulgaria
| | | | - Alexey Savov
- Department of Obstetrics and Gynecology, National Genetic Laboratory, Medical University Sofia, Sofia, Bulgaria
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6
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Balabanski L, Serbezov D, Atanasoska M, Karachanak-Yankova S, Hadjidekova S, Nikolova D, Boyanova O, Staneva R, Vazharova R, Mihailova M, Damyanova V, Nesheva D, Belejanska D, Mehrabian S, Traykov L, Toncheva D. Rare genetic variants prioritize molecular pathways for semaphorin interactions in Alzheimer’s disease patients. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1964382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- Lubomir Balabanski
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Malinov MD”, Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Maya Atanasoska
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Malinov MD”, Sofia, Bulgaria
- Department of Genetics, Faculty of Biology, Sofia University St Kliment Ohridski, Sofia, Bulgaria
| | - Sena Karachanak-Yankova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
- Department of Genetics, Faculty of Biology, Sofia University St Kliment Ohridski, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Olga Boyanova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Rada Staneva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Radoslava Vazharova
- Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Marta Mihailova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Vera Damyanova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Diana Belejanska
- Depatment of Neurology, University Hospital “Alexandrovska”, Medical University of Sofia, Sofia, Bulgaria
| | - Shima Mehrabian
- Depatment of Neurology, University Hospital “Alexandrovska”, Medical University of Sofia, Sofia, Bulgaria
| | - Lachezar Traykov
- Depatment of Neurology, University Hospital “Alexandrovska”, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
- Bulgarian Academy of Sciences, Sofia, Bulgaria
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Spasova V, Mladenov B, Rangelov S, Hammoudeh Z, Nesheva D, Serbezov D, Staneva R, Hadjidekova S, Ganev M, Balabanski L, Vazharova R, Slavov C, Toncheva D, Antonova O. Clinical impact of copy number variation changes in bladder cancer samples. Exp Ther Med 2021; 22:901. [PMID: 34257714 PMCID: PMC8243332 DOI: 10.3892/etm.2021.10333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 02/18/2021] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to detect copy number variations (CNVs) related to tumour progression and metastasis of urothelial carcinoma through whole-genome scanning. A total of 30 bladder cancer samples staged from pTa to pT4 were included in the study. DNA was extracted from freshly frozen tissue via standard phenol-chloroform extraction and CNV analysis was performed on two alternative platforms (CytoChip Oligo aCGH, 4x44K and Infinium OncoArray-500K BeadChip; Illumina, Inc.). Data were analysed with BlueFuse Multi software and Karyostudio, respectively. The results highlight the role of genomic imbalances in regions containing genes with metastatic and proliferative potential for tumour invasion. A high level of genomic instability in uroepithelial tumours was observed and a total of 524 aberrations, including 175 losses and 349 gains, were identified. The most prevalent genetic imbalances affected the following regions: 1p, 1q, 2q, 4p, 4q, 5p, 5q, 6p, 6q, 7q, 8q, 9p, 9q, 10p, 10q, 11q, 13q and 17q. High-grade tumours more frequently harboured genomic imbalances (n=227) than low-grade tumours (n=103). A total of 36 CNVs in high-grade bladder tumours were detected in chromosomes 1-5, 8-11, 14, 17, 19 and 20. Furthermore, five loss of heterozygosity variants containing 176 genes were observed in high-grade bladder cancer and may be used as potential targets for precision therapy. Revealing specific chromosomal regions related to the metastatic potential of uroepithelial tumours may lay a foundation for implementing molecular CNV profiling of bladder tumours as part of a routine progression risk estimation strategy, thus expanding the personalized therapeutic approach.
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Affiliation(s)
- Victoria Spasova
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Boris Mladenov
- Department of Urology, UMBALSM N.I. Pirogov, 1606 Sofia, Bulgaria
| | - Simeon Rangelov
- Department of Urology, Tsaritsa Yoanna University Hospital, 1527 Sofia, Bulgaria
| | - Zora Hammoudeh
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Rada Staneva
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria.,Medical Genetics Laboratory, Nadezhda Women's Health Hospital, 1373 Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria.,Medical Genetics Laboratory, Nadezhda Women's Health Hospital, 1373 Sofia, Bulgaria
| | - Mihail Ganev
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria.,Medical Genetics Laboratory, GARH Malinov, 1680 Sofia, Bulgaria
| | - Radoslava Vazharova
- Medical Genetics Laboratory, GARH Malinov, 1680 Sofia, Bulgaria.,Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University St. Kliment Ohridski, 1407 Sofia, Bulgaria
| | - Chavdar Slavov
- Department of Urology, Tsaritsa Yoanna University Hospital, 1527 Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Olga Antonova
- Department of Medical Genetics, Medical University-Sofia, 1431 Sofia, Bulgaria
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8
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Chakarova N, Balabanski L, Dimova R, Shinkov A, Tankova T. A novel AGPAT2 mutation associated with a case of late-diagnosed congenital generalized lipodystrophy type 1. Acta Diabetol 2021; 58:505-511. [PMID: 33389126 DOI: 10.1007/s00592-020-01639-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 11/08/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Nevena Chakarova
- Department of Endocrinology, Medical University of Sofia, 2 Zdrave Str, 1431, Sofia, Bulgaria.
| | - Lubomir Balabanski
- Department of Medical Genetics, Medical University of Sofia, 2 Zdrave Str, 1431, Sofia, Bulgaria
- Malinov Clinic, 46 Gotse Delchev Blvd, 1620, Sofia, Bulgaria
| | - Rumyana Dimova
- Department of Endocrinology, Medical University of Sofia, 2 Zdrave Str, 1431, Sofia, Bulgaria
| | - Alexander Shinkov
- Department of Endocrinology, Medical University of Sofia, 2 Zdrave Str, 1431, Sofia, Bulgaria
| | - Tsvetalina Tankova
- Department of Endocrinology, Medical University of Sofia, 2 Zdrave Str, 1431, Sofia, Bulgaria
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9
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Balabanski L, Serbezov D, Nikolova D, Antonova O, Nesheva D, Hammoudeh Z, Vazharova R, Karachanak-Yankova S, Staneva R, Mihaylova M, Damyanova V, Hadjidekova S, Toncheva D. Centenarian Exomes as a Tool for Evaluating the Clinical Relevance of Germline Tumor Suppressor Mutations. Technol Cancer Res Treat 2020; 19:1533033820911082. [PMID: 32233832 PMCID: PMC7132786 DOI: 10.1177/1533033820911082] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Objectives: The aim of the present study was to evaluate the clinical relevance of mutations in
tumor suppressor genes using whole-exome sequencing data from centenarians and young
healthy individuals. Methods: Two pools, one of centenarians and one of young individuals, were constructed and
whole-exome sequencing was performed. We examined the whole-exome sequencing data of
Bulgarian individuals for carriership of tumor suppressor gene variants. Results: Of all variants annotated in both pools, 5080 (0.06%) are variants in tumor suppressor
genes but only 46 show significant difference in allele frequencies between the two
studied groups. Four variants (0.004%) are pathogenic/risk factors according to single
nucleotide polymorphism database: rs1566734 in PTPRJ, rs861539 in
XRCC3, rs203462 in AKAP10, and rs486907 in
RNASEL. Discussion: Based on their high minor allele frequencies and presence in the centenarian group, we
could reclassify them from pathogenic/risk factors to benign. Our study shows that
centenarian exomes can be used for re-evaluating the clinically uncertain variants.
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Affiliation(s)
- Lubomir Balabanski
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria.,Hospital"Malinov," Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Olga Antonova
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Zora Hammoudeh
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Radoslava Vazharova
- Hospital"Malinov," Sofia, Bulgaria.,Medical Faculty, Sofia University "St Kliment Ohridski," Sofia, Bulgaria
| | | | - Rada Staneva
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Marta Mihaylova
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria.,Bulgarian Academy of Science-BAS, Sofia, Bulgaria
| | - Vera Damyanova
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Medical University-Sofia, Sofia, Bulgaria.,Bulgarian Academy of Science-BAS, Sofia, Bulgaria
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10
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Mihaylova M, Serbezov D, Balabanski L, Karachanak-Yankova S, Nikolova D, Damyanova V, Hadzhidekova S, Toncheva D. Genes predisposing to obesity emphasize G-protein coupled receptor associated pathways in healthy Bulgarian individuals. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1797533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Marta Mihaylova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
- Genome laboratory, SBALGAR Clinic Malinov, Sofia, Bulgaria
| | - Sena Karachanak-Yankova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Vera Damyanova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Savina Hadzhidekova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
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11
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Zacharieva S, Robeva R, Andonova S, Vazharova R, Balabanski L, Atanasoska M, Toncheva D, Elenkova A, Savov A. Long-term follow-up of a female patient with non-classical 11β-hydroxylase deficiency and two novel mutations in CYP11B1. Gynecol Endocrinol 2019; 35:23-27. [PMID: 29909741 DOI: 10.1080/09513590.2018.1482870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 10/14/2022] Open
Abstract
11β-Hydroxylase deficiency is the second most common enzyme disorder after 21-hydroxylase deficiency causing congenital adrenal hyperplasia (CAH11β). In females, the clinical phenotype of CAH11β classic forms is associated with ambiguous genitalia, virilization and hypertension, while most common complaints in milder non-classic forms include hirsutism, acne, menstrual disturbances, and infertility. Herein, we present clinical and genetic characteristics of an adult woman with 11β-hydroxylase deficiency, hypertension and infertility; she has been followed up from her first pregnancy to her early menopause. Genetic analyses of the patient revealed a compound-heterozygosity due to two variants in the CYP11B1 gene p.Val316Met and p.Asp480ThrfsTer2. Both mutations have not been previously reported as pathogenic in the literature. Emerging questions concerning the clinical management, fertility potential, mineral corticoid abnormalities and perimenopausal transition in patients with non-classic CAH11β have also been briefly discussed. The presented case of an adult woman with CAH11β shows that the proper diagnosis and close monitoring of patients with different CAH forms might ensure good therapy adherence and successful fertility.
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Affiliation(s)
- Sabina Zacharieva
- a Clinical Center of Endocrinology and Gerontology , Medical Faculty, Sofia Medical University , Sofia , Bulgaria
| | - Ralitsa Robeva
- a Clinical Center of Endocrinology and Gerontology , Medical Faculty, Sofia Medical University , Sofia , Bulgaria
| | - Silvia Andonova
- b National Genetic Laboratory , UHOG "Maichin dom", Medical Faculty, Sofia Medical University , Sofia , Bulgaria
| | - Radoslava Vazharova
- c Gynecology and Assisted Reproduction Hospital "Malinov DM" , Sofia , Bulgaria
- d Department of Biology, Medical Genetics and Microbiology , Faculty of Medicine, Sofia University "St. Kliment Ohridski" , Sofia , Bulgaria
| | - Lubomir Balabanski
- c Gynecology and Assisted Reproduction Hospital "Malinov DM" , Sofia , Bulgaria
| | - Maya Atanasoska
- c Gynecology and Assisted Reproduction Hospital "Malinov DM" , Sofia , Bulgaria
| | - Draga Toncheva
- d Department of Biology, Medical Genetics and Microbiology , Faculty of Medicine, Sofia University "St. Kliment Ohridski" , Sofia , Bulgaria
- e Department of Medical Genetics , Sofia Medical University , Sofia , Bulgaria
| | - Atanaska Elenkova
- a Clinical Center of Endocrinology and Gerontology , Medical Faculty, Sofia Medical University , Sofia , Bulgaria
| | - Alexey Savov
- b National Genetic Laboratory , UHOG "Maichin dom", Medical Faculty, Sofia Medical University , Sofia , Bulgaria
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12
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Ganev M, Balabanski L, Serbezov D, Karachanak-Yankova S, Vazharova R, Nesheva D, Hammoudeh Z, Nikolova D, Antonova O, Staneva R, Mihaylova M, Damyanova V, Hadjidekova S, Toncheva D. Prioritization of genetic variants predisposing to coronary heart disease in the Bulgarian population using centenarian exomes. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1700164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Mihail Ganev
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Genome laboratory, SBALGAR Clinic Malinov, Sofia, Bulgaria
| | - Dimitar Serbezov
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Sena Karachanak-Yankova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Department of Genetics, Faculty of Biology, Sofia University St Kliment Ohridski, Sofia, Bulgaria
| | - Radoslava Vazharova
- Genome laboratory, SBALGAR Clinic Malinov, Sofia, Bulgaria
- Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University St Kliment Ohridski, Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Zora Hammoudeh
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Olga Antonova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Rada Staneva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Marta Mihaylova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Vera Damyanova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Bulgarian Academy of Sciences (BAS), Sofia, Bulgaria
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13
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Serbezov D, Balabanski L, Hadjidekova S, Toncheva D. Genomics of longevity: recent insights from research on centenarians. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1532317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Dimitar Serbezov
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Assisted Reproduction Clinic “Dr. Malinov”, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Assisted Reproduction Clinic “Dr. Malinov”, Sofia, Bulgaria
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14
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Atanasoska M, Vazharova R, Ivanov I, Balabanski L, Andonova S, Ivanov S, Pacheva I, Malinov M, Toncheva D. SCN8A p.Arg1872Gln mutation in early infantile epileptic encephalopathy type 13: Review and case report. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1532815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Maya Atanasoska
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
| | - Radoslava Vazharova
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
- Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Ivan Ivanov
- Department of Paediatrics and Medical Genetics, St. George University Hospital, Medical University - Plovdiv, Plovdiv, Bulgaria
| | - Lubomir Balabanski
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
| | - Silvia Andonova
- National Genetic Laboratory, University Hospital of Obstetrics and Gynecology “Maichin dom”, Medical University of Sofia, Sofia, Bulgaria
| | - Samuil Ivanov
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
| | - Iliana Pacheva
- Department of Paediatrics and Medical Genetics, St. George University Hospital, Medical University - Plovdiv, Plovdiv, Bulgaria
| | - Maxim Malinov
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
| | - Draga Toncheva
- Genetic Laboratory, Gynecology and Assisted Reproduction Hospital “Dr Malinov D.M.”, Sofia, Bulgaria
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
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15
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Josifovska S, Vazharova R, Balabanski L, Malinov M, Kaneva A, Panov S, Hadjidekova S, Toncheva D. Double heterozygosity of novel variants found in patients with severe clinical phenotype of cardiovascular disorders. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1433064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Slavica Josifovska
- Laboratory of Molecular Biology, Faculty of Natural Sciences and Mathematics, “Ss.Cyril and Methodius” University, Skopje, Macedonia
- Genome Centre, GARH “Malinov”, Sofia, Bulgaria
- Department of Medical Genetics, Medical University of Sofia, Sofia, Bulgaria
| | - Radoslava Vazharova
- Genome Centre, GARH “Malinov”, Sofia, Bulgaria
- Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University “St. Kliment Ohridski,” Sofia, Bulgaria
| | | | | | - Anna Kaneva
- Department of Pediatric Cardiology, National Heart Hospital, Sofia, Bulgaria
| | - Sasho Panov
- Laboratory of Molecular Biology, Faculty of Natural Sciences and Mathematics, “Ss.Cyril and Methodius” University, Skopje, Macedonia
| | - Savina Hadjidekova
- Department of Medical Genetics, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Medical University of Sofia, Sofia, Bulgaria
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16
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Hammoudeh Z, Nikolova D, Balabanski L, Ivanov S, Vazharova R, Weidner S, Malinov M, Toncheva D. Screening of pharmacogenetic variants associated with drug sensitivity in patients with papillary thyroid carcinoma using next generation sequencing. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1335614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Zora Hammoudeh
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Dragomira Nikolova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | | | | | - Radoslava Vazharova
- SBALGAR “Malinov” Clinic, Sofia, Bulgaria
- Department of Medical Genetics, Medical Faculty, Sofia University, Sofia, Bulgaria
| | - Sabine Weidner
- Department of Nuclear Medicine, University Hospital Inselspital Bern, Bern, Switzerland
| | | | - Draga Toncheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- SBALGAR “Malinov” Clinic, Sofia, Bulgaria
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17
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Staneva RG, Balabanski L, Dimova I, Rukova B, Hadjidekova S, Dimitrov P, Simeonov V, Ivanov S, Vagarova R, Malinov M, Cukuranovic R, Stefanovic V, Polenakovic M, Djonov V, Galabov A, Toncheva D. Genetic, Genomic and Epigenomic Studies of Balkan Endemic Nephropathy (Ben). ACTA ACUST UNITED AC 2016; 36:101-8. [PMID: 27442376 DOI: 10.1515/prilozi-2015-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BEN is a primary, chronic tubulointerstitial nephritis characterized with chronic anemia, absence of edema, xantoderma, normal blood pressure and normal findings on the fundus oculi. The disease is distributed in restricted areas in Bulgaria, Romania, Croatia, Bosnia, Former Yugoslavia. Despite numerous studies on genetic and environmental factors and their possible involvement in BEN, its etiopathogenesis still remains elusive. Our recent study aim to elucidate the possible epigenetic component in BEN development. Whole genome DNA array methylation analysis was applied to compare the methylation profiles of male and female BEN patients from endemic regions in Bulgaria and Serbia and healthy controls. All three most prominent candidate genes with aberrations in the epigenetic profile discovered with this study are involved in the inflammatory/immune processes and oncogenesis. These data are in concordance with the reported pathological alterations in BEN. This research supports the role of epigenetic changes in BEN pathology. Exome sequencing of 22.000 genes with Illumina Nextera Exome Enrichment Kit revealed three mutant genes (CELA1, HSPG2, and KCNK5) in BEN patients which encode proteins involved in basement membrane/extracellular matrix and vascular tone, tightly connected to process of angiogenesis. We suggest that an abnormal process of angiogenesis plays a key role in the molecular pathogenesis of BEN.
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18
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Chilingirova N, Balabanski L, Kurteva G, Toncheva D, Damyanov D, Chilingirov P. 3050 Detection of driver mutation heterogeneity in patients with non-small cell lung cancer (NSCLC) using next generation sequencing (NGS). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31692-6] [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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19
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Chilingirova N, Balabanski L, Toncheva D, Kurteva G, Damyanov D, Chilingirov P. Identifying the Genetic Landscape of Squamous Cell Carcinoma (SCC) and Adenosquamous Carcinoma (ASC) of the Lung Using Next-Generation Sequencing (NGS). Ann Oncol 2015. [DOI: 10.1093/annonc/mdv043.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Toncheva D, Mihailova-Hristova M, Vazharova R, Staneva R, Karachanak S, Dimitrov P, Simeonov V, Ivanov S, Balabanski L, Serbezov D, Malinov M, Stefanovic V, Čukuranović R, Polenakovic M, Jankovic-Velickovic L, Djordjevic V, Jevtovic-Stoimenov T, Plaseska-Karanfilska D, Galabov A, Djonov V, Dimova I. NGS nominated CELA1, HSPG2, and KCNK5 as candidate genes for predisposition to Balkan endemic nephropathy. Biomed Res Int 2014; 2014:920723. [PMID: 24949484 PMCID: PMC4052113 DOI: 10.1155/2014/920723] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 04/16/2014] [Accepted: 04/30/2014] [Indexed: 01/06/2023]
Abstract
Balkan endemic nephropathy (BEN) is a familial chronic tubulointerstitial disease with insidious onset and slow progression leading to terminal renal failure. The results of molecular biological investigations propose that BEN is a multifactorial disease with genetic predisposition to environmental risk agents. Exome sequencing of 22 000 genes with Illumina Nextera Exome Enrichment Kit was performed on 22 DNA samples (11 Bulgarian patients and 11 Serbian patients). Software analysis was performed via NextGene, Provean, and PolyPhen. The frequency of all annotated genetic variants with deleterious/damaging effect was compared with those of European populations. Then we focused on nonannotated variants (with no data available about them and not found in healthy Bulgarian controls). There is no statistically significant difference between annotated variants in BEN patients and European populations. From nonannotated variants with more than 40% frequency in both patients' groups, we nominated 3 genes with possible deleterious/damaging variants--CELA1, HSPG2, and KCNK5. Mutant genes (CELA1, HSPG2, and KCNK5) in BEN patients encode proteins involved in basement membrane/extracellular matrix and vascular tone, tightly connected to process of angiogenesis. We suggest that an abnormal process of angiogenesis plays a key role in the molecular pathogenesis of BEN.
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Affiliation(s)
- D. Toncheva
- Department of Medical Genetics, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - M. Mihailova-Hristova
- Department of Medical Genetics, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
| | - R. Vazharova
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - R. Staneva
- Department of Medical Genetics, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
| | - S. Karachanak
- Department of Medical Genetics, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
| | - P. Dimitrov
- Vratza District Hospital, 66 “Vtori Iuni” Boulevard, 3000 Vratza, Bulgaria
| | - V. Simeonov
- Faculty of Medicine, University of Nis, Univerzitetski trg 2, 18000 Nis, Serbia
| | - S. Ivanov
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - L. Balabanski
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - D. Serbezov
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - M. Malinov
- Genomics Laboratory of Malinov Clinic, 1620 Sofia, Bulgaria
| | - V. Stefanovic
- Faculty of Medicine, University of Skopje, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, P.O. Box 428, 1000 Skopje, Macedonia
| | - R. Čukuranović
- Faculty of Medicine, University of Skopje, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, P.O. Box 428, 1000 Skopje, Macedonia
| | - M. Polenakovic
- Institute of Microbiology, Bulgarian Academy of Sciences, 26 Georgi Bonchev Street, 1113 Sofia, Bulgaria
| | - L. Jankovic-Velickovic
- Faculty of Medicine, University of Skopje, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, P.O. Box 428, 1000 Skopje, Macedonia
| | - V. Djordjevic
- Faculty of Medicine, University of Skopje, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, P.O. Box 428, 1000 Skopje, Macedonia
| | - T. Jevtovic-Stoimenov
- Institute of Microbiology, Bulgarian Academy of Sciences, 26 Georgi Bonchev Street, 1113 Sofia, Bulgaria
| | - D. Plaseska-Karanfilska
- Institute of Microbiology, Bulgarian Academy of Sciences, 26 Georgi Bonchev Street, 1113 Sofia, Bulgaria
| | - A. Galabov
- National Center of Public Health and Analyses, 15 Acad. Ivan Evst. Geshov Boulevard, 1431 Sofia, Bulgaria
| | - V. Djonov
- Institute of Anatomy, Bern University, Baltzerstrass 2, 3012 Bern, Switzerland
| | - I. Dimova
- Department of Medical Genetics, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
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21
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Balabanski L, Antov G, Dimova I, Ivanov S, Nacheva M, Gavrilov I, Nesheva D, Rukova B, Hadjidekova S, Malinov M, Toncheva D. Next-generation sequencing of BRCA1 and BRCA2 in breast cancer patients and control subjects. Mol Clin Oncol 2014; 2:435-439. [PMID: 24772314 DOI: 10.3892/mco.2014.251] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 11/22/2013] [Indexed: 01/09/2023] Open
Abstract
Breast cancer is currently the most common type of cancer in females. The majority of the hereditary forms of breast cancer are caused by mutations in the BRCA1 and BRCA2 genes, whose main function is the DNA repair of double-strand breaks. Genetic testing of females with a family history of breast cancer is recommended to determine their hereditary predisposition for this type of cancer. The variants with no clear clinical significance may represent a diagnostic challenge when performing targeted resequencing. In this study, DNA samples were obtained from 24 breast cancer patients (mean age, 35±10 years) with a positive family history and from 71 age-matched healthy controls. Informed consent was obtained from all the subjects. Sequence-targeted BRCA1 and BRCA2 libraries were prepared using the TruSeq Custom Amplicon method and sequenced on the Illumina MiSeq system. A wide range of variants were identified in the BRCA1 and BRCA2 genes. Two pathological/presumably pathological variants were detected in the breast cancer patient group: a mutation in BRCA2 at the chromosomal (chr) position chr13:32890665, which affected the first position of the 5' splice region following exon 2; and a mutation in BRCA1 at chr17:41219635, causing an in-frame triple nucleotide deletion of valine 1688 (8.3%). In the patient and control groups, 7 likely polymorphic variants and 13 common variants were detected in the BRCA1 and BRCA2 genes. To the best of our knowledge, this study was the first to identify 3 common polymorphisms in BRCA2, characteristic solely of the Bulgarian population, including chr13:32973737, T/-, a single-nucleotide polymorphism (SNP) within the 3'-UTR of exon 27; chr13:32973280, A/-, a mononucleotide deletion within the 5'-UTR of exon 27; and chr13:32973924, T/-, a mononucleotide deletion downstream of the gene sequence. To the best of our knowledge, this study was the first to apply next-generation sequencing of the BRCA1 and BRCA2 genes in a Bulgarian population, prompting further investigation for local founder mutations and variants characteristic for this particular region.
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Affiliation(s)
| | - Georgi Antov
- Bulgarian Academy of Sciences, Institute of Genetics 'Academician Doncho Kostov', 1113 Sofia
| | - Ivanka Dimova
- Department of Medical Genetics, Medical University of Sofia, 1431 Sofia
| | | | - Maria Nacheva
- Specialized Hospital for Active Treatment in Oncology, 1756 Sofia, Bulgaria
| | - Ivan Gavrilov
- Specialized Hospital for Active Treatment in Oncology, 1756 Sofia, Bulgaria
| | - Desislava Nesheva
- Department of Medical Genetics, Medical University of Sofia, 1431 Sofia
| | - Blaga Rukova
- Department of Medical Genetics, Medical University of Sofia, 1431 Sofia
| | | | | | - Draga Toncheva
- Genomic Laboratory, Malinov Hospital, 1680 Sofia; ; Department of Medical Genetics, Medical University of Sofia, 1431 Sofia
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22
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Avramova K, Dimitrova E, Balabanski L, Gyosheva B. Studies on the Possibilities of Applying Powder Lactic Acid Product LBB.B.5 as a Hypolipidemic Agent. BIOTECHNOL BIOTEC EQ 1996. [DOI: 10.1080/13102818.1996.10818902] [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: 10/25/2022] Open
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23
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Popova D, Daskalov M, Balabanski L, Iordanov B, Kostadinova I. [Late complications in patients having undergone a gastric resection]. Vopr Pitan 1988:18-20. [PMID: 3363909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A total of 37 patients who had undergone partial gastrectomy for duodenal or gastric ulcers, were investigated. The postoperative periods ranged from 5 to 28 years. All the patients were subjected to comprehensive clinical and neurologic examinations. The content of vitamin B12 and folic acid in the blood serum was studied by radioimmunoassay in 29 gastrectomized patients, hematological parameters (hemoglobin, serum iron, red blood cell morphology, proteinogram) were estimated in 19 patients. The mean content of vitamin B12 in the blood serum of patients was lower than in normal subjects. The mean level of folic acid in the blood of patients was also lower than in the control, however, this difference was insignificant. Nine patients had subnormal content of vitamin B12, eight of them showed manifest neurologic complications, such as myelopathy and polyneuropathy. Only 3 patients had subnormal content of folic acid in the blood serum. Weakly pronounced anemic syndrome was detected only in 2 out of 19 patients. The role of vitamin B12 deficiency in the development of neurologic symptoms has been considered.
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24
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Balabanski L. Prevalence of obesity in the East-European countries. Bibl Nutr Dieta 1986:27-35. [PMID: 3942586 DOI: 10.1159/000412171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Angelova C, Balabanski L. Influences of amino acids on the circadian rhythms of brain neurotransmitters. Bibl Nutr Dieta 1986:72-81. [PMID: 2870713 DOI: 10.1159/000412600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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26
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Balabanski L. Weight-reducing diets. Bibl Nutr Dieta 1985:111-21. [PMID: 4039930 DOI: 10.1159/000410290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
No single diet exists for the treatment of obesity. On the contrary, a variety of diet regimes should be taken in consideration in this disease. Even a normoenergic diet can produce the desired reduction of overweight if it is combined with physical exercise. A moderately reducing diet has a number of advantages over the very low-energic ones, as it leads to the preservation of the lean body mass, especially when the diet is accompanied by a regime of high physical activity. In obesity and other metabolic disorders, it is convenient to include in the diet low-energy foods rich in fiber with a possibly specific hypolipidemic effect, such as soy dishes, pectin-enriched dishes, fruit purees and juices, skimmed milk yogurt, wheat bran bisquits, and others.
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27
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Stankusheva T, Balabanski L, Visheva N. [Diurnal secretion of serum prolactin in obese women]. Akush Ginekol (Sofiia) 1982; 21:407-410. [PMID: 7181029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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28
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Hadjiolova I, Mintcheva L, Dunev S, Daleva M, Handjiev S, Balabanski L. Physical working capacity in obese women after an exercise programme for body weight reduction. Int J Obes (Lond) 1982; 6:405-10. [PMID: 7129752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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29
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Naumova R, Goranov I, Balabanski L. [New combined diet regimen in treating hyperlipoproteinemia]. Vutr Boles 1981; 20:34-7. [PMID: 6895434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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30
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Balabanski L. Diet and physical performance in the rehabilitation of obesity. Bibl Nutr Dieta 1979:33-40. [PMID: 426757 DOI: 10.1159/000402368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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31
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Tashev T, Balabanski L. Psychological significance of a regular contact between treated obese patients and their physician for maintaining reduced body weight. Bibl Nutr Dieta 1978:120-9. [PMID: 623624 DOI: 10.1159/000401140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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32
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Balabanski L, Tashev T, Meretev A, Babulkov K. [Desopimon in the treatment of obesity]. Vutr Boles 1976; 15:42-5. [PMID: 1014625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The authors tested the tolerance and therapeutic effect of desopimon preparation (1-p-chlorophenyl-2-aminopropane hydrochloride) in 44 subjects with obesity--I, II and III degree. They found a manifested appetite-inhibiting effect of the medicament in 41 of the patients and slight in two (the treatment was discontinued in a female, due to urticaria). Side effects, similar to those described with phenformin and phenmethrazin derivatives were not established. Body-weight loss is 12,9 kg per subject for a period of a month and a half, and the analysis of the data revealed that the weight loss was entirely on the account of the fatty tissue reduction. Triglyceride diminution was established in serum whereas free fatty acids were increased. After the confrontation of their own data those of some other researchers, the authors recommend desopimon as a suitable additive means in the treatment of simple nutritive (hyperphagic) obesity.
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Balabanski L, Rankov B. Early signs of vitamin A deficiency in Bulgaria. Bibl Nutr Dieta 1976:61-7. [PMID: 962837 DOI: 10.1159/000399068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Khandzhiev S, Tashev T, Balabanski L, Milanov S. [The relationship between the functional activity of the hypophysis and the dietary regimen]. Vopr Pitan 1971; 30:60-3. [PMID: 5141602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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