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Nikanorova AA, Barashkov NA, Pshennikova VG, Teryutin FM, Nakhodkin SS, Solovyev AV, Romanov GP, Burtseva TE, Fedorova SA. A Systematic Review and Meta-Analysis of Free Triiodothyronine (FT3) Levels in Humans Depending on Seasonal Air Temperature Changes: Is the Variation in FT3 Levels Related to Nonshivering Thermogenesis? Int J Mol Sci 2023; 24:14052. [PMID: 37762355 PMCID: PMC10531421 DOI: 10.3390/ijms241814052] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Thyroid hormones play a crucial role in regulating normal development, growth, and metabolic function. However, the controversy surrounding seasonal changes in free triiodothyronine (FT3) levels remains unresolved. Therefore, the aim of this study was to conduct a systematic review and meta-analysis of variations in FT3 levels in relation to seasonal air temperatures in the context of current knowledge about its role in nonshivering thermogenesis. Ten eligible articles with a total of 336,755 participants were included in the meta-analysis. The studies were categorized into two groups based on the air temperature: "Cold winter", where the winter temperature fell below 0 °C, and "Warm winter", where the winter temperature was above 0 °C. The analysis revealed that in cold regions, FT3 levels decreased in winter compared to summer (I2 = 57%, p < 0.001), whereas in warm regions, FT3 levels increased during winter (I2 = 28%, p < 0.001). These findings suggest that seasonal variations in FT3 levels are likely to be influenced by the winter temperature. Considering the important role of the FT3 in the nonshivering thermogenesis process, we assume that this observed pattern is probably related to the differences in use of thyroid hormones in the brown adipose tissue during adaptive thermogenesis, which may depend on intensity of cold exposure.
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Affiliation(s)
- Alena A. Nikanorova
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
| | - Nikolay A. Barashkov
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
| | - Vera G. Pshennikova
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
| | - Fedor M. Teryutin
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
| | - Sergey S. Nakhodkin
- M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677013 Yakutsk, Russia; (S.S.N.); (A.V.S.); (G.P.R.)
| | - Aisen V. Solovyev
- M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677013 Yakutsk, Russia; (S.S.N.); (A.V.S.); (G.P.R.)
| | - Georgii P. Romanov
- M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677013 Yakutsk, Russia; (S.S.N.); (A.V.S.); (G.P.R.)
| | - Tatiana E. Burtseva
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
- M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677013 Yakutsk, Russia; (S.S.N.); (A.V.S.); (G.P.R.)
| | - Sardana A. Fedorova
- Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677000 Yakutsk, Russia; (A.A.N.); (V.G.P.); (F.M.T.); (T.E.B.); (S.A.F.)
- M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677013 Yakutsk, Russia; (S.S.N.); (A.V.S.); (G.P.R.)
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Pshennikova VG, Teryutin FM, Cherdonova AM, Borisova TV, Solovyev AV, Romanov GP, Morozov IV, Bondar AA, Posukh OL, Fedorova SA, Barashkov NA. The GJB2 (Cx26) Gene Variants in Patients with Hearing Impairment in the Baikal Lake Region (Russia). Genes (Basel) 2023; 14:genes14051001. [PMID: 37239361 DOI: 10.3390/genes14051001] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
The GJB2 (Cx26) gene pathogenic variants are associated with autosomal recessive deafness type 1A (DFNB1A, OMIM #220290). Direct sequencing of the GJB2 gene among 165 hearing-impaired individuals living in the Baikal Lake region of Russia identified 14 allelic variants: pathogenic/likely pathogenic-nine variants, benign-three variants, unclassified-one variant, and one novel variant. The contribution of the GJB2 gene variants to the etiology of hearing impairment (HI) in the total sample of patients was 15.8% (26 out of 165) and significantly differed in patients of different ethnicity (5.1% in Buryat patients and 28.9% in Russian patients). In patients with DFNB1A (n = 26), HIs were congenital/early onset (92.3%), symmetric (88.5%), sensorineural (100.0%), and variable in severity (moderate-11.6%, severe-26.9% or profound-61.5%). The reconstruction of the SNP haplotypes with three frequent GJB2 pathogenic variants (c.-23+1G>A, c.35delG or c.235delC), in comparison with previously published data, supports a major role of the founder effect in the expansion of the c.-23+1G>A and c.35delG variants around the world. Comparative analysis of the haplotypes with c.235delC revealed one major haplotype G A C T (97.5%) in Eastern Asians (Chinese, Japanese and Korean patients) and two haplotypes, G A C T (71.4%) and G A C C (28.6%), in Northern Asians (Altaians, Buryats and Mongols). The variable structure of the c.235delC-haplotypes in Northern Asians requires more studies to expand our knowledge about the origin of this pathogenic variant.
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Affiliation(s)
- Vera G Pshennikova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677019 Yakutsk, Russia
| | - Fedor M Teryutin
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677019 Yakutsk, Russia
| | - Alexandra M Cherdonova
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
| | - Tuyara V Borisova
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
| | - Aisen V Solovyev
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
| | - Georgii P Romanov
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
| | - Igor V Morozov
- Novosibirsk State University, 630090 Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alexander A Bondar
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Olga L Posukh
- Novosibirsk State University, 630090 Novosibirsk, Russia
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Sardana A Fedorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677019 Yakutsk, Russia
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
| | - Nikolay A Barashkov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yaroslavskogo 6/3, 677019 Yakutsk, Russia
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Kulakovskogo 46, 677010 Yakutsk, Russia
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Barashkov NA, Konovalov FA, Borisova TV, Teryutin FM, Solovyev AV, Pshennikova VG, Sapojnikova NV, Vychuzhina LS, Romanov GP, Gotovtsev NN, Morozov IV, Bondar AA, Platonov FA, Burtseva TE, Khusnutdinova EK, Posukh OL, Fedorova SA. Autosomal recessive cataract (CTRCT18) in the Yakut population isolate of Eastern Siberia: a novel founder variant in the FYCO1 gene. Eur J Hum Genet 2021; 29:965-976. [PMID: 33767456 PMCID: PMC8187664 DOI: 10.1038/s41431-021-00833-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/19/2020] [Accepted: 02/10/2021] [Indexed: 11/09/2022] Open
Abstract
Congenital autosomal recessive cataract with unknown genetic etiology is one of the most common Mendelian diseases among the Turkic-speaking Yakut population (Eastern Siberia, Russia). To identify the genetic cause of congenital cataract spread in this population, we performed whole-exome sequencing (Illumina NextSeq 500) in one Yakut family with three affected siblings whose parents had preserved vision. We have revealed the novel homozygous c.1621C>T transition leading to premature stop codon p.(Gln541*) in exon 8 of the FYCO1 gene (NM_024513.4). Subsequent screening of c.1621C>T p.(Gln541*) revealed this variant in a homozygous state in 25 out of 29 Yakut families with congenital cataract (86%). Among 424 healthy individuals from seven populations of Eastern Siberia (Russians, Yakuts, Evenks, Evens, Dolgans, Chukchi, and Yukaghirs), the highest carrier frequency of c.1621C>T p.(Gln541*) was found in the Yakut population (7.9%). DNA samples of 25 homozygous for c.1621C>T p.(Gln541*) patients with congenital cataract and 114 unaffected unrelated individuals without this variant were used for a haplotype analysis based on the genotyping of six STR markers (D3S3512, D3S3685, D3S3582, D3S3561, D3S1289, and D3S3698). The structure of the identified haplotypes indicates a common origin for all of the studied mutant chromosomes bearing c.1621C>T p.(Gln541*). The age of the с.1621C>T p.(Gln541*) founder haplotype was estimated to be approximately 260 ± 65 years (10 generations). These findings characterize Eastern Siberia as the region of the world with the most extensive accumulation of the unique variant c.1621C>T p.(Gln541*) in the FYCO1 gene as a result of the founder effect.
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Affiliation(s)
- Nikolay A Barashkov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation.
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation.
| | | | - Tuyara V Borisova
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Fedor M Teryutin
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Aisen V Solovyev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Vera G Pshennikova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Nadejda V Sapojnikova
- Department of Ophthalmology, Republican Hospital #1 - National Centre of Medicine, Yakutsk, Russian Federation
| | - Lyubov S Vychuzhina
- Department of Ophthalmology, Republican Hospital #1 - National Centre of Medicine, Yakutsk, Russian Federation
| | - Georgii P Romanov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Nyurgun N Gotovtsev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Igor V Morozov
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
- Novosibirsk State University, Novosibirsk, Russian Federation
| | - Alexander A Bondar
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Fedor A Platonov
- Medical Institute, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Tatiana E Burtseva
- Medical Institute, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
- Laboratory of the Children Health Monitoring and Medical-environmental Research, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Elza K Khusnutdinova
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Federal Research Center of Russian Academy of Sciences, Ufa, Russian Federation
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russian Federation
| | - Olga L Posukh
- Novosibirsk State University, Novosibirsk, Russian Federation
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Sardana A Fedorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
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Nikanorova AA, Barashkov NA, Pshennikova VG, Nakhodkin SS, Gotovtsev NN, Romanov GP, Solovyev AV, Kuzmina SS, Sazonov NN, Fedorova SA. The Role of Nonshivering Thermogenesis Genes on Leptin Levels Regulation in Residents of the Coldest Region of Siberia. Int J Mol Sci 2021; 22:ijms22094657. [PMID: 33925025 PMCID: PMC8124869 DOI: 10.3390/ijms22094657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 12/14/2022] Open
Abstract
Leptin plays an important role in thermoregulation and is possibly associated with the microevolutionary processes of human adaptation to a cold climate. In this study, based on the Yakut population (n = 281 individuals) living in the coldest region of Siberia (t°minimum -71.2 °C), we analyze the serum leptin levels and data of 14 single nucleotide polymorphisms (SNPs) of 10 genes (UCP1, UCP2, UCP3, FNDC5, PPARGC1A, CIDEA, PTGS2, TRPV1, LEPR, BDNF) that are possibly involved in nonshivering thermogenesis processes. Our results demonstrate that from 14 studied SNPs of 10 genes, 2 SNPs (the TT rs3811787 genotype of the UCP1 gene and the GG rs6265 genotype of the BDNF gene) were associated with the elevated leptin levels in Yakut females (p < 0.05). Furthermore, of these two SNPs, the rs3811787 of the UCP1 gene demonstrated more indications of natural selection for cold climate adaptation. The prevalence gradient of the T-allele (rs3811787) of UCP1 increased from the south to the north across Eurasia, along the shore of the Arctic Ocean. Thereby, our study suggests the potential involvement of the UCP1 gene in the leptin-mediated thermoregulation mechanism, while the distribution of its allelic variants is probably related to human adaptation to a cold climate.
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Affiliation(s)
- Alena A. Nikanorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
| | - Nikolay A. Barashkov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
- Correspondence:
| | - Vera G. Pshennikova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
| | - Sergey S. Nakhodkin
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
| | - Nyurgun N. Gotovtsev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
| | - Georgii P. Romanov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
| | - Aisen V. Solovyev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (V.G.P.); (N.N.G.); (G.P.R.); (A.V.S.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
| | - Sargylana S. Kuzmina
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
| | - Nikolay N. Sazonov
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
| | - Sardana A. Fedorova
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, 677000 Yakutsk, Sakha Republic (Yakutia), Russia; (S.S.N.); (S.S.K.); (N.N.S.); (S.A.F.)
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Romanov GP, Pshennikova VG, Lashin SA, Solovyev AV, Teryutin FM, Cherdonova AM, Borisova TV, Sazonov NN, Khusnutdinova EK, Posukh OL, Fedorova SA, Barashkov NA. A new approach to estimating the prevalence of hereditary hearing loss: An analysis of the distribution of sign language users based on census data in Russia. PLoS One 2020; 15:e0242219. [PMID: 33253245 PMCID: PMC7703874 DOI: 10.1371/journal.pone.0242219] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/28/2020] [Indexed: 11/19/2022] Open
Abstract
The absence of comparable epidemiological data challenges the correct estimation of the prevalence of congenital hearing loss (HL) around the world. Sign language (SL) is known as the main type of communication of deaf people. We suggest that the distribution of SL can be interpreted as an indirect indicator of the prevalence of congenital HL. Since a significant part of congenital HL is due to genetic causes, an assessment of the distribution of SL users can reveal regions with an extensive accumulation of hereditary HL. For the first time, we analyzed the data on the distribution of SL users that became available for the total population of Russia by the 2010 census. Seventy-three out of 85 federal regions of Russia were ranked into three groups by the 25th and 75th percentiles of the proportion of SL users: 14 regions-"low proportion"; 48 regions-"average proportion"; and 11 regions-"high proportion". We consider that the observed uneven prevalence of SL users can reflect underlying hereditary forms of congenital HL accumulated in certain populations by specific genetic background and population structure. At least, the data from this study indicate that the highest proportions of SL users detected in some Siberian regions are consistent with the reported accumulation of specific hereditary HL forms in indigenous Yakut, Tuvinian and Altaian populations.
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Affiliation(s)
- Georgii P. Romanov
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - Vera G. Pshennikova
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - Sergey A. Lashin
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Aisen V. Solovyev
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of the Human in the Arctic, Institute for Humanitarian Research and North Indigenous Peoples Problems, Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences”, Yakutsk, Russia
| | - Fedor M. Teryutin
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | | | - Tuyara V. Borisova
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - Nikolay N. Sazonov
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - Elza K. Khusnutdinova
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa, Russia
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia
| | - Olga L. Posukh
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Sardana A. Fedorova
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - Nikolay A. Barashkov
- Laboratory of Molecular Biology, MK Ammosov North-Eastern Federal University, Yakutsk, Russia
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
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Nikanorova AA, Barashkov NA, Nakhodkin SS, Pshennikova VG, Solovyev AV, Romanov GP, Kuzmina SS, Sazonov NN, Burtseva TE, Odland JØ, Fedorova SA. The Role of Leptin Levels in Adaptation to Cold Climates. Int J Environ Res Public Health 2020; 17:ijerph17061854. [PMID: 32178438 PMCID: PMC7143756 DOI: 10.3390/ijerph17061854] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/06/2020] [Accepted: 03/10/2020] [Indexed: 12/21/2022]
Abstract
Currently, adipose tissue is considered an endocrine organ that produces hormone-active substances, including leptin, which can play a key role in thermoregulation processes. Therefore, we performed a meta-analysis to investigate the influence of the climatic environment on leptin levels. A systematic literature search in the databases was carried out on 10 January 2020. Finally, 22 eligible articles were included in the current meta-analysis and a total of 13,320 participants were covered in the final analysis. It was shown that males of the “North” subgroup demonstrated significantly higher levels of leptin (10.02 ng/mL; CI: 7.92–12.13) than males of the “South” subgroup (4.9 ng/mL; CI: 3.71–6.25) (p = 0.0001). On the contrary, in the female group, a similar pattern was not detected (p = 0.91). Apparently, in order to maintain body temperature, higher leptin levels are required. The results of the study indicate that such effects are most pronounced in males and to a smaller extent in females, apparently due to a relatively high initial concentration of leptin in females. The correlation between leptin levels and climatic environment data support the hypothesis of leptin-mediated thermoregulation as an adaptive mechanism to cold climates.
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Affiliation(s)
- Alena A. Nikanorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Nikolay A. Barashkov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
- Correspondence:
| | - Sergey S. Nakhodkin
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Vera G. Pshennikova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Aisen V. Solovyev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
- Laboratory of the Human in the Arctic, The Institute for Humanities Research and Indigenous Studies of the North, Federal Research Center “Yakut Science Center of Siberian Branch of Russian Academy of Science”, Yakutsk, 677027 Sakha Republic (Yakutia), Russia
| | - Georgii P. Romanov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Sargylana S. Kuzmina
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Nikolay N. Sazonov
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
| | - Tatyana E. Burtseva
- Department of Pediatrics and Child Surgery, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia;
- Laboratory of Monitoring Children Health and Medico-environmental Research, Yakut Science Centre of Complex Medical Problems, Yakutsk, 677010 Sakha Republic (Yakutia), Russia
| | - Jon Øyvind Odland
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, NTNU Norwegian University of Science and Technology, 7003 Trondheim, Norway;
| | - Sardana A. Fedorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, 677010 Yakutsk, Sakha Republic (Yakutia), Russia; (A.A.N.); (S.S.N.); (V.G.P.); (A.V.S.); (G.P.R.); (S.A.F.)
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000 Sakha Republic (Yakutia), Russia; (S.S.K.); (N.N.S.)
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7
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Barashkov NA, Romanov GP, Borisova UP, Solovyev AV, Pshennikova VG, Teryutin FM, Bondar AA, Morozov IV, Khusnutdinova EK, Posukh OL, Burtseva TE, Odland JØ, Fedorova SA. A rare case of Waardenburg syndrome with unilateral hearing loss caused by nonsense variant c.772C>T (p.Arg259*) in the MITF gene in Yakut patient from the Eastern Siberia (Sakha Republic, Russia). Int J Circumpolar Health 2020; 78:1630219. [PMID: 31213145 PMCID: PMC6586136 DOI: 10.1080/22423982.2019.1630219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/29/2022] Open
Abstract
Waardenburg syndrome (WS) is an orphan genetic disease with autosomal dominant pattern of inheritance characterised by varying degrees of hearing loss accompanied by skin, hair and iris pigmentation abnormalities. Four types of WS differing in phenotypic characteristics are now described. We performed a Sanger sequencing of coding regions of genes PAX3, MITF, SOX10 and SNAI2 in the patient with WS from a Yakut family living in the Sakha Republic. No changes were found in the PAX3, SOX10 and SNAI2 coding regions while a previously reported heterozygous transition c.772C>T (p.Arg259*) in exon 8 of the MITF gene was found in this patient. This patient presents rare phenotype of WS type 2: congenital unilateral hearing loss, unilateral heterochromia of irises, and absence of skin/hair depigmentation and dystopia canthorum. Audiological variability in WS type 2, caused by the c.772C>T (p.Arg259*) variant in the MITF gene, outlines the importance of molecular analysis and careful genotype-phenotype comparisons in order to optimally inform patients about the risk of hearing loss. The results of this study confirm the association of pathogenic variants in the MITF gene with WS type 2 and expanded data on the variability of audiological features of the WS.
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Affiliation(s)
- Nikolay A Barashkov
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
| | - Georgii P Romanov
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
| | - Uigulaana P Borisova
- b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
| | - Aisen V Solovyev
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
| | - Vera G Pshennikova
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
| | - Fedor M Teryutin
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,c Department of Professional Pathology , Republican Hospital №2 - Center for Emergency Medical Aid , Yakutsk , Russia
| | - Alexander A Bondar
- d Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine , Siberian Branch of the Russian Academy of Sciences , Novosibirsk , Russia
| | - Igor V Morozov
- d Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine , Siberian Branch of the Russian Academy of Sciences , Novosibirsk , Russia.,e Novosibirsk State University , Novosibirsk , Russia
| | - Elza K Khusnutdinova
- f Laboratory of Human Molecular Genetics, Ufa Federal Research Center of Russian Academy of Sciences, Institute of Biochemistry and Genetics , Ufa , Russia.,g Department of Genetics and Fundamental Medicine , Bashkir State University , Ufa , Russia
| | - Olga L Posukh
- e Novosibirsk State University , Novosibirsk , Russia.,h Federal Research Center Institute of Cytology and Genetics , Siberian Branch of the Russian Academy of Sciences , Novosibirsk , Russia
| | - Tatiana E Burtseva
- i Department of Pediatrics and Child Surgery , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia.,j Laboratory of monitoring the children health and medico-environmental research , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia
| | - Jon Øyvind Odland
- k Department of Public Health and Nursing, Faculty on Medicine and Health Sciences , NTNU The Norwegian University of Science and Technology , Trondheim , Norway
| | - Sardana A Fedorova
- a Laboratory of Molecular Genetics , Yakut Science Centre of Complex Medical Problems , Yakutsk , Russia.,b Laboratory of Molecular Biology , M.K. Ammosov North-Eastern Federal University , Yakutsk , Russia
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8
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Solovyev AV, Barashkov NA, Teryutin FM, Pshennikova VG, Romanov GP, Rafailov AM, Sazonov NN, Dzhemileva LU, Tomsky MI, Posukh OL, Khusnutdinova EK, Fedorova SA. Selective Heterozygous Advantage of Carriers of с.-23+1G>A Mutation in GJB2 Gene Causing Autosomal Recessive Deafness 1A. Bull Exp Biol Med 2019; 167:380-383. [PMID: 31346875 DOI: 10.1007/s10517-019-04531-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 06/28/2018] [Indexed: 11/29/2022]
Abstract
We present the results of analysis of skin epidermis thickness in individuals with recessive mutation c.-23+1G>A in the GJB2 gene in comparison with individuals without this mutation living in Eastern Siberia (Yakut population). We examined 152 individuals with different genotypes by GJB2 gene mutation c.-23+1G>A. Homozygotes and heterozygotes by c.-23+1G>A have thicker epidermal layer (0.245 mm and 0.269 mm, respectively) in comparison with individuals without this mutation (0.193 mm) (p<0.05). The obtained data support the hypothesis about selective advantage of carriers of mutant GJB2 gene alleles and partly explain extremely high carrier frequency (10.3%) of c.-23+1G>A mutation in the GJB2 gene in Yakut population in Eastern Siberia.
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Affiliation(s)
- A V Solovyev
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia. .,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia.
| | - N A Barashkov
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia.,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - F M Teryutin
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia.,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - V G Pshennikova
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia.,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - G P Romanov
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia.,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - A M Rafailov
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - N N Sazonov
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - L U Dzhemileva
- Institute of Biochemistry and Genetics, Ufa Federal Research Center, Russian Academy of Sciences, Ufa, Russia
| | - M I Tomsky
- Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
| | - O L Posukh
- Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E K Khusnutdinova
- Institute of Biochemistry and Genetics, Ufa Federal Research Center, Russian Academy of Sciences, Ufa, Russia.,Bashkir State University, Ufa, Russia
| | - S A Fedorova
- Institute of Natural Sciences, M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia.,Yakut Science Centre of Complex Medical Problems, Yakutsk, Russia
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9
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Barashkov NA, Klarov LA, Teryutin FM, Solovyev AV, Pshennikova VG, Konnikova EE, Romanov GP, Tobokhov AV, Morozov IV, Bondar AA, Posukh OL, Dzhemileva LU, Tomsky MI, Khusnutdinova EK, Fedorova SA. A novel pathogenic variant c.975G>A (p.Trp325*) in the POU3F4 gene in Yakut family (Eastern Siberia, Russia) with the X-linked deafness-2 (DFNX2). Int J Pediatr Otorhinolaryngol 2018; 104:94-97. [PMID: 29287890 DOI: 10.1016/j.ijporl.2017.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 11/01/2017] [Accepted: 11/01/2017] [Indexed: 10/18/2022]
Abstract
Here, we report a novel hemizygous transition c.975G>A (p.Trp325*) in POU3F4 gene (Xq21) found in two deaf half-brothers from one Yakut family (Eastern Siberia, Russia) with identical inner ear abnormalities ("corkscrew" cochlea with an absence of modiolus) specific to X-linked deafness-2 (DFNX2). Comprehensive clinical evaluation (CT and MR-imaging, audiological and stabilometric examinations) of available members of this family revealed both already known (mixed progressive hearing loss) and additional (enlargement of semicircular canals and postural disorders) clinical DFNX2 features in affected males with c.975G>A (p.Trp325*). Moreover, mild enlargement of semicircular canals, postural abnormalities and different types of hearing thresholds were found in female carrier of this POU3F4-variant.
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Affiliation(s)
- Nikolay A Barashkov
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation.
| | - Leonid A Klarov
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Department of Radiology, Republican Hospital #1- National Medical Centre, Ministry of Public Health of the Sakha Republic, Yakutsk, Russian Federation; Institute of Medicine, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Fedor M Teryutin
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Aisen V Solovyev
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Vera G Pshennikova
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Edilia E Konnikova
- Institute of Medicine, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Georgii P Romanov
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Alexander V Tobokhov
- Institute of Medicine, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Igor V Morozov
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation; Novosibirsk State University, Novosibirsk, Russian Federation
| | - Alexander A Bondar
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Olga L Posukh
- Novosibirsk State University, Novosibirsk, Russian Federation; Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Lilya U Dzhemileva
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Scientific Centre, Russian Academy of Sciences, Ufa, Russian Federation; Department of Immunology and Human Reproductive Health, Bashkir State Medical University, Ufa, Russian Federation
| | - Mikhail I Tomsky
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Elza K Khusnutdinova
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Scientific Centre, Russian Academy of Sciences, Ufa, Russian Federation; Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russian Federation
| | - Sardana A Fedorova
- Department of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation; Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
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10
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Solovyev AV, Dzhemileva LU, Posukh OL, Barashkov NA, Bady-Khoo MS, Lobov SL, Popova NY, Romanov GP, Sazonov NN, Bondar AA, Morozov IV, Tomsky MI, Fedorova SA, Khusnutdinova EK. Opinions of hearing parents about the causes of hearing impairment of their children with biallelic GJB2 mutations. J Community Genet 2017; 8:167-171. [PMID: 28324246 DOI: 10.1007/s12687-017-0299-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 03/09/2017] [Indexed: 10/19/2022] Open
Abstract
Hereditary hearing impairment (HI) caused by recessive GJB2 mutations is a frequent sensory disorder. The results of the molecular-based studies of HI are widely used in various genetic test systems. However, the ethical aspects are less described than the genetic aspects. The concerns expressed by individuals from groups with genetic risks must be included in the counseling of patients and their families. For evaluation of subjective opinions of hearing parents about the presumed causes of HI of their children, we analyze the cohort of parents having children with confirmed hereditary HI caused by biallelic recessive GJB2 mutations (in a homozygous or a compound heterozygous state). This study included 70 deaf children with HI due to mutations in the GJB2 gene and 91 questionnaires about the presumed causes of their deafness filled by their parents. Most of the parents at 78% (CI 68.4-85.4%) attributed their children's HI to "non-hereditary" causes and 22% (CI 14.7-31.6%) to "hereditary" causes (p < 0.05). Therefore, the prior opinions of the parents did not correspond to positive GJB2 genetic testing results. The subjective opinions of parents are probably partly based on family history, since respondents with deaf relatives in their pedigree more likely supposed hereditary causes for HI in their children than the respondents without deaf relatives (p < 0.001).
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Affiliation(s)
- Aisen V Solovyev
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation. .,Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Kulakovsky, 46, 677000, Russian Federation.
| | - Lilya U Dzhemileva
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics of Ufa Scientific Centre, Ufa, Russian Federation.,Department of Immunology and Human Reproductive Health, Bashkir State Medical University, Ufa, Russian Federation
| | - Olga L Posukh
- Federal Research Center Institute of Cytology and Genetics, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - Nikolay A Barashkov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation.,Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Kulakovsky, 46, 677000, Russian Federation
| | - Marita S Bady-Khoo
- Federal Research Center Institute of Cytology and Genetics, Novosibirsk, Russian Federation.,Perinatal Center of the Tyva Republic, Kyzyl, Russian Federation
| | - Semen L Lobov
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics of Ufa Scientific Centre, Ufa, Russian Federation
| | - Natalya Yu Popova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Georgii P Romanov
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation.,Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Kulakovsky, 46, 677000, Russian Federation
| | - Nikolay N Sazonov
- Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Kulakovsky, 46, 677000, Russian Federation
| | - Alexander A Bondar
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Igor V Morozov
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Department of Molecular Biology, Novosibirsk State University, Novosibirsk, Russian Federation
| | - Mikhail I Tomsky
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation
| | - Sardana A Fedorova
- Laboratory of Molecular Genetics, Yakut Science Centre of Complex Medical Problems, Yakutsk, Russian Federation.,Laboratory of Molecular Biology, M.K. Ammosov North-Eastern Federal University, Yakutsk, Kulakovsky, 46, 677000, Russian Federation
| | - Elza K Khusnutdinova
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics of Ufa Scientific Centre, Ufa, Russian Federation.,Department of Genetics and Fundamental Medicine, Bashkir State University, Bashkortostan Republic, Ufa, Russian Federation
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11
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Barashkov NA, Pshennikova VG, Posukh OL, Teryutin FM, Solovyev AV, Klarov LA, Romanov GP, Gotovtsev NN, Kozhevnikov AA, Kirillina EV, Sidorova OG, Vasilyevа LM, Fedotova EE, Morozov IV, Bondar AA, Solovyevа NA, Kononova SK, Rafailov AM, Sazonov NN, Alekseev AN, Tomsky MI, Dzhemileva LU, Khusnutdinova EK, Fedorova SA. Spectrum and Frequency of the GJB2 Gene Pathogenic Variants in a Large Cohort of Patients with Hearing Impairment Living in a Subarctic Region of Russia (the Sakha Republic). PLoS One 2016; 11:e0156300. [PMID: 27224056 PMCID: PMC4880331 DOI: 10.1371/journal.pone.0156300] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 05/12/2016] [Indexed: 11/29/2022] Open
Abstract
Pathogenic variants in the GJB2 gene, encoding connexin 26, are known to be a major cause of hearing impairment (HI). More than 300 allelic variants have been identified in the GJB2 gene. Spectrum and allelic frequencies of the GJB2 gene vary significantly among different ethnic groups worldwide. Until now, the spectrum and frequency of the pathogenic variants in exon 1, exon 2 and the flanking intronic regions of the GJB2 gene have not been described thoroughly in the Sakha Republic (Yakutia), which is located in a subarctic region in Russia. The complete sequencing of the non-coding and coding regions of the GJB2 gene was performed in 393 patients with HI (Yakuts—296, Russians—51, mixed and other ethnicities—46) and in 187 normal hearing individuals of Yakut (n = 107) and Russian (n = 80) populations. In the total sample (n = 580), we revealed 12 allelic variants of the GJB2 gene, 8 of which were recessive pathogenic variants. Ten genotypes with biallelic recessive pathogenic variants in the GJB2 gene (in a homozygous or a compound heterozygous state) were found in 192 out of 393 patients (48.85%). We found that the most frequent GJB2 pathogenic variant in the Yakut patients was c.-23+1G>A (51.82%) and that the second most frequent was c.109G>A (2.37%), followed by c.35delG (1.64%). Pathogenic variants с.35delG (22.34%), c.-23+1G>A (5.31%), and c.313_326del14 (2.12%) were found to be the most frequent among the Russian patients. The carrier frequencies of the c.-23+1G>A and с.109G>A pathogenic variants in the Yakut control group were 10.20% and 2.80%, respectively. The carrier frequencies of с.35delG and c.101T>C were identical (2.5%) in the Russian control group. We found that the contribution of the GJB2 gene pathogenic variants in HI in the population of the Sakha Republic (48.85%) was the highest among all of the previously studied regions of Asia. We suggest that extensive accumulation of the c.-23+1G>A pathogenic variant in the indigenous Yakut population (92.20% of all mutant chromosomes in patients) and an extremely high (10.20%) carrier frequency in the control group may indicate a possible selective advantage for the c.-23+1G>A carriers living in subarctic climate.
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Affiliation(s)
- Nikolay A. Barashkov
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
- * E-mail:
| | - Vera G. Pshennikova
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Olga L. Posukh
- Laboratory of Human Molecular Genetics, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
- Novosibirsk State University, Novosibirsk, Russian Federation
| | - Fedor M. Teryutin
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Aisen V. Solovyev
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Leonid A. Klarov
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Department of Radiology, Republican Hospital # 2 –Center of Emergency Medicine, Ministry of Public Health of the Sakha Republic, Yakutsk, Russian Federation
| | - Georgii P. Romanov
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Nyurgun N. Gotovtsev
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Andrey A. Kozhevnikov
- Republican Centre of Professional Pathology, Republican Hospital # 2 –Center of Emergency Medicine, Ministry of Public Health of the Sakha Republic, Yakutsk, Russian Federation
| | - Elena V. Kirillina
- Institute of Foreign Philology and Regional Studies, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Oksana G. Sidorova
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
| | - Lena M. Vasilyevа
- Audiology-Logopaedic Centre, Republican Hospital #1– National Medical Centre, Ministry of Public Health of the Sakha Republic, Yakutsk, Russian Federation
| | - Elvira E. Fedotova
- Audiology-Logopaedic Centre, Republican Hospital #1– National Medical Centre, Ministry of Public Health of the Sakha Republic, Yakutsk, Russian Federation
| | - Igor V. Morozov
- Novosibirsk State University, Novosibirsk, Russian Federation
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Alexander A. Bondar
- SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Natalya A. Solovyevа
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Sardana K. Kononova
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Adyum M. Rafailov
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Nikolay N. Sazonov
- Department of Biochemistry and Biotechnology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
| | - Anatoliy N. Alekseev
- Institute of Humanitarian Research and Indigenous Peoples of the North, Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russian Federation
| | - Mikhail I. Tomsky
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
| | - Lilya U. Dzhemileva
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Scientific Centre, Russian Academy of Sciences, Ufa, Russian Federation
- Department of Immunology and Human Reproductive Health, Bashkir State Medical University, Ufa, Russian Federation
| | - Elza K. Khusnutdinova
- Laboratory of Human Molecular Genetics, Institute of Biochemistry and Genetics, Ufa Scientific Centre, Russian Academy of Sciences, Ufa, Russian Federation
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russian Federation
| | - Sardana A. Fedorova
- Department of Molecular Genetics, Federal State Budgetary Scientific Institution “Yakut Science Centre of Complex Medical Problems,” Yakutsk, Russian Federation
- Laboratory of Molecular Biology, Institute of Natural Sciences, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation
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Borkhsenius SN, Merkulova NA, Romanov GP, Vaniushin BF. [Palindromic and repetitive sequences in initiation sites of DNA replication in Tetrahymena]. Mol Biol (Mosk) 1981; 15:816-823. [PMID: 6792504] [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: 05/21/2023]
Abstract
DNA replication was induced in Tetrahymena pyriformis cells at the stationary phase of culture growth by a series of heat shocks. The selective nature of this DNA synthesis was established. DNA was uniformly labelled with [3H]thymidine during the exponential phase of culture growth and with [14C]thymidine during the stationary phase. The renaturation kinetics of DNA samples was investigated by measuring the relations of 14C/3H radioactivity in the renatured and denatured DNA fractions after their separation on hydroxyapatite. The results were analysed by means of a computer program based on the experimentally found renaturation curve of T. pyriformis macronuclear DNA. Under conditions described palindromic and repetitive (which are repeated about 1000 times) nucleotide sequences are intensively replicated. It is assumed that synchronous activation of replicons occurs as a consequence of induction. It may well be that replication starts in the central parts of comparatively long palindromes, which are identical or very similar in their nucleotide sequences.
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