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Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response

The potential for trophic transfer of single-walled carbon nanotubes (SWCNTs) was assessed using the green algae Tetraselmis suecica and the blue mussel Mytilus edulis in a series of laboratory experiments. Swanee River Natural Organic Matter (SRNOM)-dispersed SWCNTs were introduced into growing alg...

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Autores principales: Al-Shaeri, Majed, Paterson, Lynn, Stobie, Margret, Cyphus, Paul, Hartl, Mark G. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9784265/
https://www.ncbi.nlm.nih.gov/pubmed/36558216
http://dx.doi.org/10.3390/nano12244363
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author Al-Shaeri, Majed
Paterson, Lynn
Stobie, Margret
Cyphus, Paul
Hartl, Mark G. J.
author_facet Al-Shaeri, Majed
Paterson, Lynn
Stobie, Margret
Cyphus, Paul
Hartl, Mark G. J.
author_sort Al-Shaeri, Majed
collection PubMed
description The potential for trophic transfer of single-walled carbon nanotubes (SWCNTs) was assessed using the green algae Tetraselmis suecica and the blue mussel Mytilus edulis in a series of laboratory experiments. Swanee River Natural Organic Matter (SRNOM)-dispersed SWCNTs were introduced into growing algal cultures. Light microscopical observations, confirmed by scanning electronic microscopy (SEM) and Raman spectroscopy, showed that SWCNT agglomerates adhered to the external algal cell walls and transmission electronic microscopy (TEM) results suggested internalization. A direct effect of SWCNT exposure on the algae was a significant decrease in growth, expressed as chlorophyll a concentration and cell viability. Mussels, fed with algae in the presence of SWCNTs, led to significantly increased pseudofaeces production, indicating selective feeding. Nevertheless, histological sections of the mussel digestive gland following exposure showed evidence of SWCNT-containing algae. Furthermore, DNA damage and oxidative stress biomarker responses in the mussel haemocytes and gill tissue were significantly altered from baseline values and were consistent with previously observed responses to SWCNT exposure. In conclusion, the observed SWCNT-algal interaction demonstrated the potential for SWCNT entrance at the base of the food chain, which may facilitate their trophic transfer with potential consequences for human exposure and health.
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spelling pubmed-97842652022-12-24 Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response Al-Shaeri, Majed Paterson, Lynn Stobie, Margret Cyphus, Paul Hartl, Mark G. J. Nanomaterials (Basel) Article The potential for trophic transfer of single-walled carbon nanotubes (SWCNTs) was assessed using the green algae Tetraselmis suecica and the blue mussel Mytilus edulis in a series of laboratory experiments. Swanee River Natural Organic Matter (SRNOM)-dispersed SWCNTs were introduced into growing algal cultures. Light microscopical observations, confirmed by scanning electronic microscopy (SEM) and Raman spectroscopy, showed that SWCNT agglomerates adhered to the external algal cell walls and transmission electronic microscopy (TEM) results suggested internalization. A direct effect of SWCNT exposure on the algae was a significant decrease in growth, expressed as chlorophyll a concentration and cell viability. Mussels, fed with algae in the presence of SWCNTs, led to significantly increased pseudofaeces production, indicating selective feeding. Nevertheless, histological sections of the mussel digestive gland following exposure showed evidence of SWCNT-containing algae. Furthermore, DNA damage and oxidative stress biomarker responses in the mussel haemocytes and gill tissue were significantly altered from baseline values and were consistent with previously observed responses to SWCNT exposure. In conclusion, the observed SWCNT-algal interaction demonstrated the potential for SWCNT entrance at the base of the food chain, which may facilitate their trophic transfer with potential consequences for human exposure and health. MDPI 2022-12-07 /pmc/articles/PMC9784265/ /pubmed/36558216 http://dx.doi.org/10.3390/nano12244363 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Al-Shaeri, Majed
Paterson, Lynn
Stobie, Margret
Cyphus, Paul
Hartl, Mark G. J.
Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title_full Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title_fullStr Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title_full_unstemmed Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title_short Trophic Transfer of Single-Walled Carbon Nanotubes at the Base of the Food Chain and Toxicological Response
title_sort trophic transfer of single-walled carbon nanotubes at the base of the food chain and toxicological response
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9784265/
https://www.ncbi.nlm.nih.gov/pubmed/36558216
http://dx.doi.org/10.3390/nano12244363
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