Effects of nanoscale quantum dots in male Chinese loaches (Misgurnus anguillicaudatus): Estrogenic interference action, toxicokinetics and oxidative stress

Li, Hongcheng; Luo, Wenru; Tao, Yong; Wu, Yuan; Lv, Xuefei; Zhou, Qunfang; Jiang, Guibin

doi:10.1007/s11426-009-0226-5

Cited by 8 publications

(3 citation statements)

References 40 publications

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“…However, some researchers proposed that the heavy metals in QDs, such as cadmium, have some extent of cytotoxicity, which greatly confines their practical applications [6][7][8]. In such case, developing new fluorescent nanomaterials with low toxicity and good fluorescent features is an alternative strategy.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of fluorescent hydroxyls-coated carbon dots with hydrothermal reaction and its application to optical sensing of metal ions

et al. 2011

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Carbon dots (CDs) with average diameter of 3.1 ± 0.5 nm were facilely synthesized with candle soot through hydrothermal reaction in sodium hydroxide aqueous solution. The as-prepared CDs were covered with a lot of hydroxyls, possessed properties of good water-solubility, anti-photobleaching, salt tolerance, and low cytotoxicity, and had a fluorescence quantum yield (QY) of about 5.5%. The fluorescence of the hydroxyls-coated CDs could be selectively quenched by metal ions such as Cr 3+ , Al 3+ and Fe 3+ , which is because these metals can easily combine with the hydroxyl groups on the surface of CDs and induce aggregation of hydroxyls-coated CDs. Experiments showed that the quenching of Cr 3+ had a Sterm-Volmer constant of 1.03 × 10 7 M -1 with a liner range of 1.0-25.0 μM and detection limit of 60 nM (3σ). carbon dots, fluorescence, quantum yield, cytotoxicity, metal ions

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Section: Introductionmentioning

confidence: 99%

One-step synthesis of fluorescent hydroxyls-coated carbon dots with hydrothermal reaction and its application to optical sensing of metal ions

et al. 2011

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“…Accompanying the rapid development of nanotechnology, more and diverse applications are found for nanoparticles (NPs) due to the ongoing-discovery of new properties, with all the concomitant worries concerning their potential adverse effects on organisms and the environment. [1][2][3][4][5] . Cadmium telluride (CdTe), as an example, is composed of semiconductor nanocrystals (2-100 nm).…”

Section: Introductionmentioning

confidence: 99%

“…Factors including components, concentration, size, charge, outer coating, oxidisability and stability are considered as comprehensive reasons for their toxicity. 1,2 In the case of the CdTe-based NPs (CdTe-NPs), the release of free cadmium ions (Cd 2+ ) is considered to be a major factor causing cytotoxicity. The possible toxicity mechanisms of Cd 2+ include interference with DNA repair and Zn 2+ substitution during protein metabolism and the induction of reactive oxygen species (ROS) formation.…”

Section: Introductionmentioning

confidence: 99%

Free cadmium ions released from CdTe-based nanoparticles and their cytotoxicity on Phaeodactylum tricornutum

Deng

Liu

et al. 2010

Metallomics

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The risk of nanoparticles (NPs) to organisms and the environment has become more noticeable alongside their rapid applications in many fields. The release of Cd(2+) from CdTe-based NPs (CdTe-NPs), an important class of engineered nanomaterials, is one of the possible factors responsible for the cytotoxicity of these NPs. Based on the same CdTe core, CdTe/CdS, CdTe/ZnS and CdTe/SiO(2) NPs were synthesized and their Cd(2+) release rates were carefully studied based on dialysis using inductively coupled plasma mass spectrometry (ICPMS). Results obtained indicated that the Cd(2+) release rates of the CdTe-NPs decreased in the order CdTe (8.78 ng mL(-1) mg(-1) h(-1)) > CdTe/CdS (2.63) > CdTe/SiO(2) (0.89) > CdTe/ZnS (0.72). Phaeodactylum tricornutum was used as a model diatom for evaluating the cytotoxicity of the CdTe-NPs. Results obtained from the CdTe-NPs exposure experiments together with ICPMS and fluorescence microscopy studies suggested that the cytotoxicity of the CdTe-NPs increased along with the increase in their Cd(2+) release rates. Effective coating materials such as ZnS and SiO(2) for the CdTe core significantly reduced the cytotoxicity of CdTe.

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Plasma kinetics and biodistribution of water-soluble CdTe quantum dots in mice: a comparison between Cd and Te

et al. 2011

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Effects of nanoscale quantum dots in male Chinese loaches (Misgurnus anguillicaudatus): Estrogenic interference action, toxicokinetics and oxidative stress

Abstract: quantum dot, estrogenic effect, toxicokinetics, oxidative stress

Cited by 8 publications

References 40 publications

One-step synthesis of fluorescent hydroxyls-coated carbon dots with hydrothermal reaction and its application to optical sensing of metal ions

One-step synthesis of fluorescent hydroxyls-coated carbon dots with hydrothermal reaction and its application to optical sensing of metal ions

Free cadmium ions released from CdTe-based nanoparticles and their cytotoxicity on Phaeodactylum tricornutum

Plasma kinetics and biodistribution of water-soluble CdTe quantum dots in mice: a comparison between Cd and Te

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