Effects of carbon nanotubes on the toxicities of copper, cadmium and zinc toward the freshwater microalgae Scenedesmus obliquus

Sun, Chen; Wen, Liang; Xu, Yinfeng; Hu, Naitao; Ma, Jun; Cao, Weixing; Sun, Shiqing; Hu, Chenyang; Zhao, Yongjun; Huang, Qingguo

doi:10.1016/j.aquatox.2020.105504

Cited by 30 publications

(20 citation statements)

References 55 publications

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“…Indeed, comparative studies suggested that Ag NPs were relatively less cytotoxic compared with ZnO NPs at the same mass concentrations (Elje et al, 2020; L. Jiang, Li, Xie, Liu, & Cao, 2019; Lee & Park, 2019; Wan et al, 2018), and therefore, adding Ag into ZnO nanocomplexes is expected to reduce the overall toxicity. This is also consistent with previous studies that showed that the presence of metal‐based NPs or metal ions alleviated the toxicity of other NPs (Hackenberg et al, 2017; Hernández‐Moreno et al, 2016; Hu, Hu, Li, & Zhao, 2016; Sun et al, 2020). However, we noticed that compared with soft materials such as liposomes (L. Shi, Wang, et al, 2020), polymers (Li et al, 2021; Zhou et al, 2020), chitosan (W. Han et al, 2019), lipids (Wan et al, 2018; Xie, Wan, Chen, Han, & Wang, 2020), soluble supramolecular NPs (X. Chen, Hu, et al, 2020), and proteins (An et al, 2020), the cytotoxicity of Ag–ZnO nanocomplexes was still relatively high.…”

Section: Discussionsupporting

confidence: 92%

Comparison of cytotoxicity of Ag/ZnO and Ag@ZnO nanocomplexes to human umbilical vein endothelial cells in vitro

Yan

Zhang

et al. 2020

J of Applied Toxicology

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Novel metal and metal oxide‐based nanocomplexes are being developed due to their superior properties compared with nanoparticles (NPs) based on single composition. In this study, we synthesized Ag‐coated ZnO (Ag/ZnO) and Ag‐doped ZnO (Ag@ZnO) NPs. The cytotoxicity and mechanisms associated with the synthesized NPs were investigated to understand the influence of Ag positions on biocompatibility of the NPs. After exposure to human umbilical vein endothelial cells (HUVECs), Ag/ZnO, Ag@ZnO, and ZnO NPs all significantly induced cytotoxicity, but the cytotoxic effects of Ag/ZnO and Ag@ZnO NPs were more modest in comparison with ZnO NPs. At cytotoxic concentrations, all NPs significantly induced intracellular Zn ions, which suggested a role of excessive Zn ions on cytotoxicity of NPs. All types of NPs significantly induced the expression of endoplasmic reticulum (ER) stress genes including DNA damage‐inducible transcript 3 (DDIT3), X‐box binding protein 1 (XBP‐1), and ER to nucleus signaling 1 (ERN1), but Ag/ZnO and Ag@ZnO NPs were less effective to induce DDIT3 and XBP‐1 expression compared with ZnO NPs. Not surprisingly, only ZnO NPs significantly induced the expression of caspase 3. Combined, the results from this study showed that Ag/ZnO and Ag@ZnO NPs were less cytotoxic and less potent to induce ER stress gene expression compared with ZnO NPs, but there were no significant differences between Ag/ZnO and Ag@ZnO NPs. Our results may provide novel understanding about the biocompatibility of Ag–ZnO nanocomplexes.

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Section: Discussionsupporting

confidence: 92%

Comparison of cytotoxicity of Ag/ZnO and Ag@ZnO nanocomplexes to human umbilical vein endothelial cells in vitro

Yan

Zhang

et al. 2020

J of Applied Toxicology

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“…The increase in total Chl content at concentrations of 50 and 100 mg L −1 MWCNT could be related to higher photosynthetic activity. In this regard, the authors of [19] and [20], state that CNTs have the ability to move through tissues by forming pores via the apoplastic pathway and via endocytosis until reaching mesophyll cells in leaves, especially within chloroplasts, affecting photosynthetic activity by capturing carbon for energy use and electron transport. Ghasempour et al [21], working with rose periwinkle (Catharanthus roseu) in vitro, at a concentration of 50 mg L −1 MWCNT, observed the highest amount of biomass, whereas at concentrations of 100 and 150 mg L −1 MWCNT they observed an increase in Chl content.…”

Section: Chlorophyll Contentmentioning

confidence: 99%

“…The CNTs have the ability to transport heavy metals (Cu, Cd, Zn, Pb) without energy expenditure; however, the uptake of these metals depends on the CNT concentration, heavy metal, and plant genotype [12,19], simulating a chelating effect. Martinez-Ballesta et al [10], working with broccoli (Brassica oleracea L.) protoplasts, observed that P and Fe content increased at 10 mg L −1 MWCNT.…”

Section: Macro-and Micronutrient Contentmentioning

confidence: 99%

Multi-Walled Carbon Nanotubes Improved Development during In Vitro Multiplication of Sugarcane (Saccharum spp.) in a Semi-Automated Bioreactor

Sorcia-Morales

Gómez-Meriño

Sánchez-Segura

et al. 2021

Plants

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Carbon nanotubes play an important role in plant biotechnology due to their effects on the growth and differentiation of cells, tissues, organs, and whole plants. This study aimed to evaluate the effect of multi-walled carbon nanotubes (MWCNTs) during in vitro multiplication of sugarcane (Saccharum spp.) using a temporary immersion system. Morphological characterization of MWCNTs was carried out under a transmission electron microscope. Different concentrations (0, 50, 100, 200 mg L−1) of MWCNTs were added to Murashige and Skoog liquid culture medium in the multiplication stage. At 30 d of culture, number of shoots per explant, shoot length, number of leaves per shoot, total chlorophyll, dry matter percentage, carbon percentage, and macro- and micronutrient content were evaluated. Results showed an increase in the development of sugarcane shoots at concentrations of 100 and 200 mg L−1 MWCNT. Total chlorophyll content increased at concentrations of 50 and 100 mg L−1 MWCNT, whereas macro- and micronutrient content was variable at the different MWCNT concentrations. Results suggest a hormetic effect, characterized by stimulation at low concentrations. In conclusion, the use of low concentrations of MWCNTs had positive effects on development, total chlorophyll, carbon percentage, and macro- and micronutrient (N, Ca, S, Fe, Cu, Zn and Na) contents during in vitro multiplication of sugarcane and may have a potential use in other species of agricultural interest.

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“…Немодифицированные углеродные наноструктуры могут быть безопасны для живых организмов [82], однако функционализация поверхности или взаимодействие с другими поллютантами могут дать синергетический эффект, значительно усиливая их биодоступность и токсичность [83]. При этом поведение наноструктур при взаимодействии с другими поллютантами довольно трудно предсказать.…”

Section: синергизм опасных микрополлютантовunclassified

Nanoparticles in the Aquatic Environment: The Risks Associated with Them and the Possibilities of Their Mitigation with Microalgae

Gusev

Zakharova

Vasyukova

et al. 2021

Moscow Univ. Biol.Sci. Bull.

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Nanoparticles (NPs) are dangerous micro-pollutants that exhibit biotoxicity even in low (nanogram range) concentrations. Apart from direct toxicity to living organisms, NPs can absorb and transfer organic or inorganic toxicants, as well as potentiate the toxicity of other micropollutants. Increasing use of NPs in the industrial and domestic applications leads to their increased production and discharge into the environment giving rise to diverse risks for ecosystems. These risks are exacerbated by the resilience of NPs to biodegradation in natural ecosystems and traditional wastewater treatment plants. Efficient NPs removal technologies are

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Effects of carbon nanotubes on the toxicities of copper, cadmium and zinc toward the freshwater microalgae Scenedesmus obliquus

Cited by 30 publications

References 55 publications

Comparison of cytotoxicity of Ag/ZnO and Ag@ZnO nanocomplexes to human umbilical vein endothelial cells in vitro

Comparison of cytotoxicity of Ag/ZnO and Ag@ZnO nanocomplexes to human umbilical vein endothelial cells in vitro

Multi-Walled Carbon Nanotubes Improved Development during In Vitro Multiplication of Sugarcane (Saccharum spp.) in a Semi-Automated Bioreactor

Nanoparticles in the Aquatic Environment: The Risks Associated with Them and the Possibilities of Their Mitigation with Microalgae

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