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Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift

In this study, the toxicity induced by excessive doses of manganese (MnCl(2)), which is one of the essential trace elements for the continuation of the metabolic activities of the organisms, was investigated with the help of the Allium test. Toxicity was investigated by using physiological (percent...

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Autores principales: Tümer, Cihat, Çavuşoğlu, Kültiğin, Yalçin, Emine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9722709/
https://www.ncbi.nlm.nih.gov/pubmed/36470962
http://dx.doi.org/10.1038/s41598-022-25657-6
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author Tümer, Cihat
Çavuşoğlu, Kültiğin
Yalçin, Emine
author_facet Tümer, Cihat
Çavuşoğlu, Kültiğin
Yalçin, Emine
author_sort Tümer, Cihat
collection PubMed
description In this study, the toxicity induced by excessive doses of manganese (MnCl(2)), which is one of the essential trace elements for the continuation of the metabolic activities of the organisms, was investigated with the help of the Allium test. Toxicity was investigated by using physiological (percent germination, root length, weight gain), cytogenetic [mitotic index (MI), micronucleus (MN), chromosomal abnormalities (CAs)], biochemical [malondialdehyde (MDA), superoxide dismutase (SOD) catalase (CAT)] and anatomical (root tip meristematic cell damage) parameters. Allium cepa L. bulbs were divided into four groups as one control and three treatments. The control group was germinated with tap water, and the treatment groups were germinated with 250, 500 and 1000 µM doses of MnCl(2). The germination process was continued for 72 h without interruption. At the end of the period, the root tips were collected, washed in distilled water and made ready for microscopic and spectrophotometric analyzes with the help of routine preparation techniques. As a result, the highest germination percentage, root length, weight gain and MI, and the lowest MN frequency, CAs numbers, MDA level, SOD and CAT enzyme activities were determined in the control group (group I). MnCl(2) exposure caused a decrease in physiological parameter values and an increase in cytogenetic (except MI) and biochemical parameter values, depending on the dose. MnCl(2) exposure induced MN and CAs such as fragment, sticky chromosome, vagrant chromosome, unequal distribution of chromatin and bridge. This genotoxic effect of MnCl(2) was associated with DNA–MnCl(2) interaction, and this interaction was also confirmed by bathochromic and hypochromic shifts in spectral analysis. Anatomical damages such as epidermis cell damage, flattened cell nucleus, cortex cell damage and cortex cell wall thickening were observed after MnCl(2) treatment. As a result, it has been determined that excessive doses of the trace element Mn cause physiological, cytogenetic, biochemical and anatomical toxicity and A. cepa test material is a reliable bio-indicator in determining this toxicity.
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spelling pubmed-97227092022-12-07 Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift Tümer, Cihat Çavuşoğlu, Kültiğin Yalçin, Emine Sci Rep Article In this study, the toxicity induced by excessive doses of manganese (MnCl(2)), which is one of the essential trace elements for the continuation of the metabolic activities of the organisms, was investigated with the help of the Allium test. Toxicity was investigated by using physiological (percent germination, root length, weight gain), cytogenetic [mitotic index (MI), micronucleus (MN), chromosomal abnormalities (CAs)], biochemical [malondialdehyde (MDA), superoxide dismutase (SOD) catalase (CAT)] and anatomical (root tip meristematic cell damage) parameters. Allium cepa L. bulbs were divided into four groups as one control and three treatments. The control group was germinated with tap water, and the treatment groups were germinated with 250, 500 and 1000 µM doses of MnCl(2). The germination process was continued for 72 h without interruption. At the end of the period, the root tips were collected, washed in distilled water and made ready for microscopic and spectrophotometric analyzes with the help of routine preparation techniques. As a result, the highest germination percentage, root length, weight gain and MI, and the lowest MN frequency, CAs numbers, MDA level, SOD and CAT enzyme activities were determined in the control group (group I). MnCl(2) exposure caused a decrease in physiological parameter values and an increase in cytogenetic (except MI) and biochemical parameter values, depending on the dose. MnCl(2) exposure induced MN and CAs such as fragment, sticky chromosome, vagrant chromosome, unequal distribution of chromatin and bridge. This genotoxic effect of MnCl(2) was associated with DNA–MnCl(2) interaction, and this interaction was also confirmed by bathochromic and hypochromic shifts in spectral analysis. Anatomical damages such as epidermis cell damage, flattened cell nucleus, cortex cell damage and cortex cell wall thickening were observed after MnCl(2) treatment. As a result, it has been determined that excessive doses of the trace element Mn cause physiological, cytogenetic, biochemical and anatomical toxicity and A. cepa test material is a reliable bio-indicator in determining this toxicity. Nature Publishing Group UK 2022-12-05 /pmc/articles/PMC9722709/ /pubmed/36470962 http://dx.doi.org/10.1038/s41598-022-25657-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Tümer, Cihat
Çavuşoğlu, Kültiğin
Yalçin, Emine
Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title_full Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title_fullStr Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title_full_unstemmed Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title_short Screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
title_sort screening the toxicity profile and genotoxicity mechanism of excess manganese confirmed by spectral shift
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9722709/
https://www.ncbi.nlm.nih.gov/pubmed/36470962
http://dx.doi.org/10.1038/s41598-022-25657-6
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