The role of size and protein shells in the toxicity to algal photosynthesis induced by ionic silver delivered from silver nanoparticles

Salas, P.; Odžak, Nikša; Echegoyen, Yolanda; Kägi, Ralf; Sancho, Maria Carmen; Navarro, Enrique

doi:10.1016/j.scitotenv.2019.07.237

Cited by 19 publications

(8 citation statements)

References 31 publications

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“…Sathyanarayanan et al (2013) studied the impact of Ag 2 O nanoparticles and considered it as a novel source of antibiotics. Furthermore, Salas et al (2019) also demonstrated the antimicrobial properties of Ag 2 O nanoparticles against E. coli. The ZnO nanoparticles exhibited good bactericidal effects against the gram-positive and gram-negative microorganisms and spores.…”

Section: Metal Oxide-based Nanoparticlementioning

confidence: 89%

Recent Advances in Metal Decorated Nanomaterials and Their Various Biological Applications: A Review

et al. 2020

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Nanoparticles (nanoparticles) have received much attention in biological application because of their unique physicochemical properties. The metal-and metal oxide-supported nanomaterials have shown significant therapeutic effect in medical science. The mechanisms related to the interaction of nanoparticles with animal and plant cells can be used to establish its significant role and to improve their activity in health and medical applications. Various attempts have been made to discuss the antibiotic resistance and antimicrobial activity of metal-supported nanoparticles. Despite all these developments, there is still a need to investigate their performance to overcome modern challenges. In this regard, the present review examines the role of various types of metal-supported nanomaterials in different areas such as antibacterial, antifungal, anticancer, and so on. Based on the significant ongoing research and applications, it is expected that metal-supported nanomaterials play an outstanding role not only in medical but also in other important areas.

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Section: Metal Oxide-based Nanoparticlementioning

confidence: 89%

Recent Advances in Metal Decorated Nanomaterials and Their Various Biological Applications: A Review

et al. 2020

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“…In particular, due to the sterilization ability, [ 1 , 2 ] the research and application of AgNPs in biological systems has received widespread attention [ 3 , 4 ]. As we all know, NPs are enshrouded by a layer of biomolecules after being exposed to a biological matrix, generating a novel interface called ‘protein corona’, thus changing the physicochemical properties of NPs to influence their biological effect [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Kinetic Binding Behaviors of Human Serum Albumin to Silver Nanoparticles

2022

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A nanoparticle, under biological milieu, is inclined to be combined with various biomolecules, particularly protein, generating an interfacial corona which provides a new biological identity. Herein, the binding interaction between silver nanoparticles (AgNPs) and human serum albumin (HSA) was studied with transmission electron microscopy (TEM), circular dichroism (CD), and multiple spectroscopic techniques. Due to the ground state complex formed mainly through hydrophobic interactions, the fluorescence titration method proved that intrinsic fluorescence for HSA was probably statically quenched by AgNPs. The complete thermodynamic parameters were derived, indicating that the interaction between HSA and AgNPs is an entropy-driven process. Additionally, synchronous fluorescence and CD spectrum results suggested the conformational variation it has upon binding to AgNPs and the α-helix content has HSA visibly decreased. The kinetic experiments proved the double hysteresis effect has in HSA’s binding to the AgNPs surface. Moreover, the binding has between HSA and AgNPs follows the pseudo-second-order kinetic characteristic and fits the Freundlich model for multilayer adsorption. These results facilitate the comprehension about NPs’ underlying biological effects under a physiological environment and promote the secure applications of NPs biologically and medically.

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“…Also, algae serve as a model organism to assess effects of NPs in aquatic systems [80]. Studies on NP toxicity so far concluded that either or both NPs and liberated ions from NPs could cause toxicity [79,81].…”

Section: Introductionmentioning

confidence: 99%

The toxicity of coated silver nanoparticles to the alga Raphidocelis subcapitata

et al. 2020

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The use of silver nanoparticles (AgNPs) is growing exponentially, especially in consumer products due to their excellent antimicrobial properties. However, concerns are growing on their possible negative effects on environmental and human health. AgNPs from consumer products enter aquatic ecosystems where their physicochemical properties including surface functionalization are critical to their impact on aquatic organisms. The effects of AgNPs coated with three different ligands; tyrosine (T-AgNP), epigallocatechin gallate (E-AgNP) and curcumin (C-AgNP) and Ag + ions on the freshwater green alga Raphidocelis subcapitata were investigated. Stability tests of AgNPs revealed that the coating significantly affects the fate and behaviour of AgNPs. All types of AgNPs tested and ionic silver were found to be toxic to the alga and differential growth inhibition of algae were observed from differently coated AgNPs, with the 48 h EC 50 of C-AgNPs, T-AgNPs and E-AgNPs being 0.155, 0.163 and 0.243 mg L −1 , respectively, in comparison with 0.051 mg L −1 for Ag + ions. Associated Ag in the algae increased with increased concentrations of all AgNPs and Ag + ions and the toxicity positively correlated to the associated Ag content in algae. The antioxidant enzymes glutathione S-transferase and catalase were activated in algal cells by the AgNPs and Ag + ions, but a consistent difference in response was not identified with different concentrations of NPs. This study shows the effects of the surrounding environment and surface functionalization of AgNPs on algae highlighting the importance of considering them in environmental risk assessment of AgNPs.

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The role of size and protein shells in the toxicity to algal photosynthesis induced by ionic silver delivered from silver nanoparticles

Cited by 19 publications

References 31 publications

Recent Advances in Metal Decorated Nanomaterials and Their Various Biological Applications: A Review

Recent Advances in Metal Decorated Nanomaterials and Their Various Biological Applications: A Review

Thermodynamic and Kinetic Binding Behaviors of Human Serum Albumin to Silver Nanoparticles

The toxicity of coated silver nanoparticles to the alga Raphidocelis subcapitata

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