Tags

Type your tag names separated by a space and hit enter

Bioaccumulation and toxic effects of nanoparticulate and ionic silver in Saccostrea glomerata (rock oyster).
Ecotoxicol Environ Saf. 2019 Sep 15; 179:127-134.EE

Abstract

The increasing production of Ag nanoparticle (AgNP) containing products has inevitably led to a growing concern about their release into the aquatic environment, along with their potential behaviour, toxicity, and bioaccumulation in marine organisms exposed to NPs released from these products. Hence, this study is focused on the effects of AgNPs in Saccostrea glomerata (rock oyster) in artificial seawater (ASW); evaluating the NP's stability, dissolution, and bioaccumulation rate. AgNPs NM300K (20 ± 5 nm) in concentrations of 12.5 μgL-1 and 125 μgL-1 were used to conduct the experiments, and were compared to a blank and a positive control of 12.5 μgL-1 AgNO3. Dissolution in ASW was measured by ICP-OES and stability was assessed by TEM after 1 h and 3, 5, and 7 days of exposure. Bioaccumulation in gills and digestive glands was measured after 7 days of exposure. The higher concentration of AgNPs induced more aggregation, underwent less dissolution, and showed less bioaccumulation, while the lower concentration showed less aggregation, more dissolution and higher bioaccumulation. Five biomarkers (EROD: ethoxyresorufin-o-deethylase, DNA strand breaks, LPO: lipid peroxidation, GST: glutathione S-transferase and GR: glutathione reductase) were analysed at 0, 3, 5 and 7 days. Significant differences compared to the initial day of exposure (day 0) were reported in DNA strand breaks after 5 and 7 days of exposure, GST, from the third day of exposure, in all the Ag samples, and in some samples for LPO and GR biomarkers, while no significant induction of EROD was observed. A combined effect for each type of treatment and time of exposure was also reported for DNA strand breaks and GST biomarkers measured at the digestive glands. In general, the significant inductions measured showed the following trend: 125 μgL-1 AgNPs >12.5 μgL-1 AgNPs ∼12.5 μgL-1 AgNO3 even though bioaccumulation followed the opposite trend.

Authors+Show Affiliations

School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK. Electronic address: e.valsamijones@bham.ac.uk.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31030055

Citation

Carrazco-Quevedo, Ana, et al. "Bioaccumulation and Toxic Effects of Nanoparticulate and Ionic Silver in Saccostrea Glomerata (rock Oyster)." Ecotoxicology and Environmental Safety, vol. 179, 2019, pp. 127-134.
Carrazco-Quevedo A, Römer I, Salamanca MJ, et al. Bioaccumulation and toxic effects of nanoparticulate and ionic silver in Saccostrea glomerata (rock oyster). Ecotoxicol Environ Saf. 2019;179:127-134.
Carrazco-Quevedo, A., Römer, I., Salamanca, M. J., Poynter, A., Lynch, I., & Valsami-Jones, E. (2019). Bioaccumulation and toxic effects of nanoparticulate and ionic silver in Saccostrea glomerata (rock oyster). Ecotoxicology and Environmental Safety, 179, 127-134. https://doi.org/10.1016/j.ecoenv.2019.04.032
Carrazco-Quevedo A, et al. Bioaccumulation and Toxic Effects of Nanoparticulate and Ionic Silver in Saccostrea Glomerata (rock Oyster). Ecotoxicol Environ Saf. 2019 Sep 15;179:127-134. PubMed PMID: 31030055.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioaccumulation and toxic effects of nanoparticulate and ionic silver in Saccostrea glomerata (rock oyster). AU - Carrazco-Quevedo,Ana, AU - Römer,Isabella, AU - Salamanca,Maria J, AU - Poynter,Alexander, AU - Lynch,Iseult, AU - Valsami-Jones,Eugenia, Y1 - 2019/04/28/ PY - 2018/08/02/received PY - 2019/04/05/revised PY - 2019/04/09/accepted PY - 2019/4/29/pubmed PY - 2019/7/18/medline PY - 2019/4/29/entrez KW - Bioaccumulation KW - Biomarker responses KW - Bivalves KW - Nanoparticulate KW - Rock oyster KW - Saccostrea glomerata KW - Seawater KW - Silver nanoparticles KW - Toxicity SP - 127 EP - 134 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 179 N2 - The increasing production of Ag nanoparticle (AgNP) containing products has inevitably led to a growing concern about their release into the aquatic environment, along with their potential behaviour, toxicity, and bioaccumulation in marine organisms exposed to NPs released from these products. Hence, this study is focused on the effects of AgNPs in Saccostrea glomerata (rock oyster) in artificial seawater (ASW); evaluating the NP's stability, dissolution, and bioaccumulation rate. AgNPs NM300K (20 ± 5 nm) in concentrations of 12.5 μgL-1 and 125 μgL-1 were used to conduct the experiments, and were compared to a blank and a positive control of 12.5 μgL-1 AgNO3. Dissolution in ASW was measured by ICP-OES and stability was assessed by TEM after 1 h and 3, 5, and 7 days of exposure. Bioaccumulation in gills and digestive glands was measured after 7 days of exposure. The higher concentration of AgNPs induced more aggregation, underwent less dissolution, and showed less bioaccumulation, while the lower concentration showed less aggregation, more dissolution and higher bioaccumulation. Five biomarkers (EROD: ethoxyresorufin-o-deethylase, DNA strand breaks, LPO: lipid peroxidation, GST: glutathione S-transferase and GR: glutathione reductase) were analysed at 0, 3, 5 and 7 days. Significant differences compared to the initial day of exposure (day 0) were reported in DNA strand breaks after 5 and 7 days of exposure, GST, from the third day of exposure, in all the Ag samples, and in some samples for LPO and GR biomarkers, while no significant induction of EROD was observed. A combined effect for each type of treatment and time of exposure was also reported for DNA strand breaks and GST biomarkers measured at the digestive glands. In general, the significant inductions measured showed the following trend: 125 μgL-1 AgNPs >12.5 μgL-1 AgNPs ∼12.5 μgL-1 AgNO3 even though bioaccumulation followed the opposite trend. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/31030055/Bioaccumulation_and_toxic_effects_of_nanoparticulate_and_ionic_silver_in_Saccostrea_glomerata__rock_oyster__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(19)30455-5 DB - PRIME DP - Unbound Medicine ER -