Gold Octahedra nanoparticles (Au_0.03 and Au_0.045): Synthesis and impact on marine clams Ruditapes decussatus

Fkiri, Anis; Sellami, Badreddine; Selmi, Aymen; Khazri, Abdelhafidh; Saidani, Wiem; Bouzidi, Imen; Sheehan, David; Beyrem, Hamouda; Smiri, Leila Samia

doi:10.1016/j.aquatox.2018.07.004

Cited by 12 publications

(2 citation statements)

References 36 publications

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“…The anisotropy of the shape of the Pd nanoparticle shows strong localized surface plasmon resonance (LSPR) in the NIR region of the electromagnetic spectrum. 34 Hot electrons generated by LSPR greatly promote the enzymatic activity of metal nanomaterials. Yue Yang et al.…”

Section: Discussionmentioning

confidence: 99%

Polydopamine-Pd nanozymes as potent ROS scavengers in combination with near-infrared irradiation for osteoarthritis treatment

Hu¹,

Yang²,

Zhong³

et al. 2023

iScience

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Section: Discussionmentioning

confidence: 99%

Polydopamine-Pd nanozymes as potent ROS scavengers in combination with near-infrared irradiation for osteoarthritis treatment

Hu¹,

Yang²,

Zhong³

et al. 2023

iScience

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“…Following their arrival in marine ecosystems, they accumulate further in sediment and biota, inducing negative effects ( Gottschalk et al, 2009 , Vale et al, 2016 , Li et al, 2017 , Hou et al, 2019 ). Recently, the assessment of their toxicity on aquatic organisms was extensively investigated, revealing that the oxidative stress is a common endpoint as response to nanotoxicity ( Fkiri et al, 2018 , Saidani et al, 2019 ). The phosphonates (PC) are widely used for various industrial applications due to their high stability, corrosion inhibition and dispersing properties ( Gledhill and Feijtel, 1992 , Knepper, 2003 ).…”

Section: Introductionmentioning

confidence: 99%

Impacts of nanoparticles and phosphonates in the behavior and oxidative status of the mediterranean mussels (Mytilus galloprovincialis)

Sellami

Bouzidi

Hedfi

et al. 2021

Saudi Journal of Biological Sciences

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The current study investigated the exposure of the Mediterranean mussel ( Mytilus galloprovincialis ) to gold nanoparticles decorated zinc oxide (Au-ZnO NPs) and phosphonate [Diethyl (3-cyano-1-hydroxy-1-phenyl-2-methylpropyl)] phosphate (PC). The mussels were exposed to concentrations of 50 and 100 µg L -1 of both compounds alone, as well as to a mixture of both pollutants (i.e. Mix). The singular and the combined effect of each pollutant was investigated by measuring the concentration of various metals (i.e., Cu, Fe, Mn, Zn and Au) in the the digestive glands and gills of mussels, their filtration capacity (FC), respiration rate (RR) and the response of oxidative biomarkers, respectively, following 14 days of exposure. The concentrations of Cu, Fe, Mn, Zn and Au increased directly with Au-ZnO NPs in mussel tissues, but significantly only for Zn. In contrast, the mixture of Au-ZnO100 NPs and PC100 did not induce any significant increase in the content of metals in digetsve glands and gills, suggesting antagonistic interactions between contaminants. In addition, FC and RR levels decreased following exposure to Au-ZnO100 NPs and PC100 treatments and no significant alterations were observed after the exposure to 50 µg.L -1 of both contaminants and Mix. Hydrogen peroxide (H 2 O 2 ) level, GSH/GSSG ratio, superoxide dismutase (SOD), catalase (CAT) and acetylcholinesterase (AChE) activities showed significant changes following the exposure to both Au-ZnO NPs and PC, in the gills and the digestive glands of the mussel. However, no significant modifications were observed in both organs following the exposure to Mix. The current study advances the understanding of the toxicity of NPs and phosphonates on M. galloprovincialis and sets the path for future ecotoxicological studies regarding the synergic effects of these substances on marine species. Moreover, the current experiment suggests that the oxidative stress and the neurotoxic pathways are responsive following the exposure of marine invertebrates to both nanoparticles and phosphonates, with potential antagonist interactions of these substances on the physiology of targeted species.

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Multienzyme‐Like Nanozymes: Regulation, Rational Design, and Application

Sheng

Ding

et al. 2023

Advanced Materials

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Nanomaterials with more than one enzyme‐like activity are termed multi‐enzymic nanozymes, which have received increasing attention in recent years and hold huge potential to be applied in diverse fields, especially for biosensing and therapeutics. Compared to single enzyme‐like nanozymes, multi‐enzymic nanozymes offer various unique advantages, including synergistic effects, cascaded reactions, and environmentally‐responsive selectivity. Nevertheless, along with these merits, the catalytic mechanism and rational design of multi‐enzymic nanozymes are more complicated and elusive as compared to single‐enzymic nanozymes. In this review, we systematically discussed the multi‐enzymic nanozymes classification scheme based on the numbers/types of activities, the internal and external factors regulating the multi‐enzymatic activities, the rational design based on chemical, biomimetic, and computer‐aided strategies, and recent progress in applications attributed to the advantages of multi‐catalytic activities. Finally, current challenges and future perspectives regarding the development and application of multi‐enzymatic nanozymes are suggested. This review aims to deepen the understanding and inspire the research in multi‐enzymic nanozymes to a greater extent.This article is protected by copyright. All rights reserved

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Gold Octahedra nanoparticles (Au_0.03 and Au_0.045): Synthesis and impact on marine clams Ruditapes decussatus

Cited by 12 publications

References 36 publications

Polydopamine-Pd nanozymes as potent ROS scavengers in combination with near-infrared irradiation for osteoarthritis treatment

Polydopamine-Pd nanozymes as potent ROS scavengers in combination with near-infrared irradiation for osteoarthritis treatment

Impacts of nanoparticles and phosphonates in the behavior and oxidative status of the mediterranean mussels (Mytilus galloprovincialis)

Multienzyme‐Like Nanozymes: Regulation, Rational Design, and Application

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