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Kuchta-Gładysz M, Wójcik E, Grzesiakowska A, Rymuza K, Szeleszczuk O. Chromosomal Instability at Fragile Sites in Blue Foxes, Silver Foxes, and Their Interspecific Hybrids. Animals (Basel) 2021; 11:ani11061743. [PMID: 34207981 PMCID: PMC8230692 DOI: 10.3390/ani11061743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 11/29/2022] Open
Abstract
Simple Summary The paper describes the karyotypes of blue and silver foxes and their hybrids, in terms of the numbers of A and B chromosomes and the frequency of fragile sites on chromosomes. Genome stability in these species is affected by Robertson translocations in the karyotype of the blue fox and by B chromosomes in the silver fox. The fragile sites assay was used as a biomarker to assess genome stability in foxes. This test enables the identification of breaks, chromatid gaps, and deletions. In healthy individuals, the number of these instabilities remains low. The test can be used to select individuals with the most stable genome for breeding of blue and silver foxes. The fewer an individual’s susceptible sites, the more likely it is to have good reproductive performance. This factor is extremely important in the case of blue foxes, which are an endangered species. Abstract A cytogenetic assay based on fragile sites (FS) enables the identification of breaks, chromatid gaps, and deletions. In healthy individuals, the number of these instabilities remains low. Genome stability in these species is affected by Robertsonian translocations in the karyotype of the blue fox and by B chromosomes in the silver fox. The aims of the study were to characterise the karyotype of blue foxes, silver foxes, and their hybrids and to identify chromosomal fragile sites used to evaluate genome stability. The diploid number of A chromosomes in blue foxes ranged from 48 to 50, while the number of B chromosomes in silver foxes varied from one to four, with a constant number of A chromosomes (2n = 34). In interspecific hybrids, both types of karyotypic variation were identified, with the diploid number of A chromosomes ranging from 40 to 44 and the number of B chromosomes varying from 0 to 3. The mean frequency of FS in foxes was 4.06 ± 0.19: 4.61 ± 0.37 in blue foxes, 3.46 ± 0.28 in silver foxes, and 4.12 ± 0.22 in hybrids. A relationship was identified between an increased number of A chromosomes in the karyotype of the hybrids and the frequency of chromosomal breaks. The FS assay was used as a biomarker for the evaluation of genomic stability in the animals in the study.
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Affiliation(s)
- Marta Kuchta-Gładysz
- Department of Animal Reproduction, Anatomy and Genomics, Faculty of Animal Sciences, University of Agriculture in Krakow, ul. Mickiewicza 24/28, 30-059 Kraków, Poland; (M.K.-G.); (A.G.); (O.S.)
| | - Ewa Wójcik
- Institute of Animal Science and Fisheries, Faculty of Agrobioengineering and Animal Husbandry, Siedlce University of Natural Sciences and Humanities, ul. Prusa 14, 08-110 Siedlce, Poland
- Correspondence:
| | - Anna Grzesiakowska
- Department of Animal Reproduction, Anatomy and Genomics, Faculty of Animal Sciences, University of Agriculture in Krakow, ul. Mickiewicza 24/28, 30-059 Kraków, Poland; (M.K.-G.); (A.G.); (O.S.)
| | - Katarzyna Rymuza
- Institute of Agriculture and Horticulture, Faculty of Agrobioengineering and Animal Husbandry, Siedlce University of Natural Sciences and Humanities, ul. Prusa 14, 08-110 Siedlce, Poland;
| | - Olga Szeleszczuk
- Department of Animal Reproduction, Anatomy and Genomics, Faculty of Animal Sciences, University of Agriculture in Krakow, ul. Mickiewicza 24/28, 30-059 Kraków, Poland; (M.K.-G.); (A.G.); (O.S.)
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Kuchta-Gładysz M, Wójcik E, Słonina D, Grzesiakowska A, Otwinowska-Mindur A, Szeleszczuk O, Niedbała P. Determination of cytogenetic markers for biological monitoring in coypu (Myocastor coypu). Anim Sci J 2020; 91:e13440. [PMID: 32885569 DOI: 10.1111/asj.13440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/11/2020] [Accepted: 06/04/2020] [Indexed: 11/28/2022]
Abstract
Cytogenetic tests are used to assess the influence of physical and chemical factors with potential mutagenic and genotoxic properties on the animal organism. The test results make it possible to eliminate mutagens, as well as helping predict possible genetic consequences in animal cells and assess animal resistance. The aim of this study was to examine, using cytogenetic tests, the spontaneous chromosome and DNA damage in coypu lymphocytes. Four tests: fragile site (FS), bleomycin (BLM), micronucleus, (MN) and comet were used for the first time in coypu cells. The averages with standard deviations obtained in the research were as follows: 3.30 ± 0.80 fragile sites/cell; 0.63 ± 0.80 BLM damage/cell; 6.10 ± 0.53% binucleated cells with MN; and 3.24 ± 0.63% DNA in tail. The present analysis showed high interindividual variation in spontaneous chromosomal and DNA damage levels. In the case of micronucleus, fragile sites, and comet assays, the differences between animals were statistically significant. The data suggest that these assays are sensitive enough to detect some effects on an individual animal and can be proposed as tools for coypu biomonitoring.
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Affiliation(s)
- Marta Kuchta-Gładysz
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture, Krakow, Poland
| | - Ewa Wójcik
- Institute of Animal Science and Fisheries, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
| | - Dorota Słonina
- Department of Tumor Pathology, Maria Skłodowska-Curie Institute-Oncology Center, Cracow Branch, Poland
| | - Anna Grzesiakowska
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture, Krakow, Poland
| | | | - Olga Szeleszczuk
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture, Krakow, Poland
| | - Piotr Niedbała
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture, Krakow, Poland
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Abstract
Chromosome instability adversely affects animal fertility and reproduction. Analysis of instability can be a valuable diagnostic tool. Helpful tests for assessment of instabilities include the sister chromatid exchange assay, identification of fragile sites, the bleomycin assay and the comet assay. These techniques can be used to assess and compare the chromosome stability of individual breeds of animals. The aim of the study was to assess chromosome stability in boars: Duroc, Duroc x Pietrain and Pietrain x Duroc crossbreds, Polish Large White, and the Neckar, P76 and PIC lines. The study assessed the chromosome stability of boars. The distribution of instabilities in individual breeds was varied. The average frequency of chromatid exchange was 4.8 ± 1.5, while that of fragile sites was 3.9 ± 1.4. The mean level of DNA damage (% tail DNA) was 9.4 ± 8.3, while in the bleomycin assay b/c and %AM were 0.6 ± 0.7 and 44.4 ± 4.1. A higher rate of instability was found in older individuals than in younger ones. The cytogenetic assays used to identify various forms of chromosome instability can be used to evaluate boars intended for breeding.
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Affiliation(s)
- Ewa Wójcik
- Institute of Animal Science and Fisheries, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
- * E-mail:
| | - Agnieszka Sokół
- Institute of Animal Science and Fisheries, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
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Kuchta-Gładysz M, Andraszek K, Szeleszczuk O, Niedbała P, Otwinowska-Mindur A. Analysis of sperm chromatin structure in blue foxes (Alopex lagopus) and silver foxes (Vulpes vulpes). Livest Sci 2020. [DOI: 10.1016/j.livsci.2019.103869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wójcik E, Szostek M. Assessment of genome stability in various breeds of cattle. PLoS One 2019; 14:e0217799. [PMID: 31163060 PMCID: PMC6548367 DOI: 10.1371/journal.pone.0217799] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/18/2019] [Indexed: 02/06/2023] Open
Abstract
Chromosomal instability is a type of genome instability involving changes in genetic information at the chromosomal level. The basic tests used to identify this form of instability are sister chromatid exchange (SCE) tests and identification of fragile sites (FS). SCE is the process by which sister chromatids become fragmented as a result of DNA strand breakage and reassembly, followed by exchange of these fragments. FS can be observed in the form of breaks, gaps or constrictions on chromosomes, which often result from multiple nucleotide repeats in DNA that are difficult to replicate. The research material was the peripheral blood of ten breeds of cattle raised in Poland, including four native breeds covered by a genetic resources conservation programme, i.e. Polish Red, Polish Red-and-White, White-Backed, and Polish Black-and-White, as well as Polish Holstein-Friesian, Simmental, Montbéliarde, Jersey, Limousine and Danish Red. Two tests were performed on chromosomes obtained from in vitro cultures: SCE and FS. The average frequency of SCE was 5.08 ± 1.31, while the incidence of FS was 3.45 ± 0.94. Differences in the incidence of SCE and FS were observed between breeds. The least damage was observed in the Polish Red and White-Backed breeds, and the most in Polish Holstein-Friesians. The most damage was observed in the interstitial part of the chromosomes. Age was shown to significantly affect the incidence of SCE and FS. Younger cows showed less damage than older ones (SCE: 4.84 ± 1.25; 5.34 ± 1.24; FS: 3.10 ± 0.88, 3.80 ± 0.92).
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Affiliation(s)
- Ewa Wójcik
- Institute of Bioengineering and Animal Breeding, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
| | - Małgorzata Szostek
- Institute of Bioengineering and Animal Breeding, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
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Szeleszczuk O, Gleindek M, Grzesiakowska A, Kuchta-Gładysz M, Otwinowska-Mindur A. Evaluation of chromosomal instability in somatic cells of farmed foxes. Arch Anim Breed 2018; 61:405-412. [PMID: 32175447 PMCID: PMC7065389 DOI: 10.5194/aab-61-405-2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/28/2018] [Indexed: 11/11/2022] Open
Abstract
The micronucleus
(MN) test is a common tool used to evaluate cellular genetic instability at
the chromosomal level. It determines the effect of physical, chemical and
environmental factors on DNA, and thus the body's individual resistance to
harmful substances. The karyotypes of blue and silver foxes and their
interspecific hybrids are characterized by morphological and structural
variation. This variation is partly attributable to the presence of
chromosomal polymorphism, which may significantly influence the stability of
genetic material in the cells of these species. The objective of the study
was to evaluate genetic material stability in selected Canidae species. To
this end, analyses using the MN test were performed. Binucleated cells (BNCs)
were analysed in microscopic preparations, and the number of micronuclei was
determined within these cells. For the proportions of both MN and BNCs,
highly significant differences were observed between the fox species. The
interspecific hybrids differed from the other fox species in MN percentage.
The lowest average was noted in blue foxes (3.33) and the highest in
interspecific hybrids (15.21).
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Affiliation(s)
- Olga Szeleszczuk
- Department of Animal Anatomy, Institute of Veterinary Sciences, University of Agriculture in Krakow, Krakow 30-059, Poland
| | - Magdalena Gleindek
- Department of Animal Anatomy, Institute of Veterinary Sciences, University of Agriculture in Krakow, Krakow 30-059, Poland
| | - Anna Grzesiakowska
- Department of Animal Anatomy, Institute of Veterinary Sciences, University of Agriculture in Krakow, Krakow 30-059, Poland
| | - Marta Kuchta-Gładysz
- Department of Animal Anatomy, Institute of Veterinary Sciences, University of Agriculture in Krakow, Krakow 30-059, Poland
| | - Agnieszka Otwinowska-Mindur
- Department of Genetics and Animal Breeding, Faculty of Animal Science, University of Agriculture in Krakow, Krakow 30-059, Poland
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