Polybrominated diphenyl ethers (PBDEs) concentrations in soil and plants around municipal dumpsites in Abuja, Nigeria

Oloruntoba, Kike; Sindiku, Omotayo; Osibanjo, Oladele; Herold, Christine; Weber, Roland

doi:10.1016/j.envpol.2021.116794

Cited by 20 publications

(6 citation statements)

References 61 publications

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“…The five PBDE congeners, namely, BDE-47, 3,3′,4,4′-tetrabromodiphenyl ether (BDE-77), 2,2′,4,4′,5- pentabromodiphenyl ether (BDE-99), 2,2′,4,4′,5,5′-hexabromodiphenyl ether (BDE-153), and decabromodiphenyl ether (BDE-209) (Table S1), share similar chemical structures and have been frequently detected in soils. ,, The standards were purchased from J&K Scientific (Beijing, China). Rice tissues exposed to these five PBDE congeners were freeze-dried and ultrasonically extracted with 20 mL of hexane/dichloromethane (1:1, v/v) for 30 min.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…, ADME) behaviors of PBDEs, − most studies focus only on the tissue-distribution profiles and influencing factors ( e.g. , physicochemical properties of PBDEs or plant lipid content). ,− The underlying molecular mechanisms of the PBDE translocation and bioaccumulation in plants are seldom reported and deemed an important research topic for ensuring food safety.…”

Section: Introductionmentioning

confidence: 99%

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Amino Acid Transporter as a Potential Carrier Protein for the Root-to-Shoot Translocation of Polybrominated Diphenyl Ethers in Rice

Chen

Wang

Zhu

2023

Environ. Sci. Technol.

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As typical persistent organic pollutants, polybrominated diphenyl ethers (PBDEs) tend to accumulate in edible parts of rice, posing great ecological and health risks. The translocation of PBDEs from underground to aboveground parts of rice is a crucial procedure to determine the final bioaccumulation level. Herein, this study aimed to identify the transporter proteins for PBDEs in rice plants in order to strengthen our understanding of the bioaccumulation mechanism and the potential prevention strategy of the PBDE risk. Similar time-dependent patterns were observed among the root-to-shoot translocation factors (TFs) of PBDEs, the expression of lysine histidine transporter (LHT) protein, and the relative levels of LHT substrates (phenylalanine or tyrosine), implying the potential co-transport of PBDEs, phenylalanine, and tyrosine by the carrier LHT. Fluorescence spectra and circular dichroism showed that PBDE congeners interfered with LHT via static fluorescence quenching and changes in the protein’s secondary structure. The in vitro sorption fraction of LHT to PBDEs, as revealed by sorption equilibrium analysis, was comparable to the in vivo TF values. Knockout of OsLHT1 in rice using CRISPR/Cas9 technology caused a 48.2–78.4% decrease in PBDE translocation. Molecular docking simulation suggested that PBDEs, phenylalanine, and tyrosine were inserted into the same ligand-binding cavity of LHT, substantiating the potential carrier role of LHT for PBDEs from a conformational perspective. Quantitative structure activity relationship analysis demonstrated that the ether-bond oxygen and the carbons at the site 4 and 4′ of PBDE molecules are significant determinants of the binding affinity with the LHT protein and in vivo translocation of PBDEs. In summary, this study discovered that LHT acts as the cellular carrier for PBDEs and offered a comprehensive molecular explanation for the bioaccumulation and translocation of PBDEs in rice plants, covering both biological and chemical perspectives. These findings fill in a knowledge gap on the endogenous transporter proteins for exogenous organic pollutants.

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Section: Materials and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Amino Acid Transporter as a Potential Carrier Protein for the Root-to-Shoot Translocation of Polybrominated Diphenyl Ethers in Rice

Chen

Wang

Zhu

2023

Environ. Sci. Technol.

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“…Eggs and milk around dump sites and recycling sites where plastics were burnt in developing countries contain high levels of POPs such as PBDEs and SCCPs (Labunska et al 2014;Zeng et al 2018;Adu-Kumi et al 2019;Oloruntoba et al 2019, Oloruntoba et al 2021.…”

Section: Disposal To Non-engineered Landfills and Dumpsitesmentioning

confidence: 99%

Chemicals in Plastics - A Technical Report

2023

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This report aims to inform the global community about the chemical-related issues of plastic pollution and options to address them. It also aims to support the negotiation process to develop the instrument on plastic pollution based on United Nations Environment Assembly resolution 5/14. The report outlines a set of credible and publicly available scientific studies and initiatives focused on chemicals in plastics and the science-policy interface. However, the report is not exhaustive given the large and rapidly growing volume of global research on the topic, nor does it comprehensively review the environmental and occupational epidemiological literature. As the evidence base grows, future efforts will build on this report to further provide support and take actions to reduce the impacts of plastic pollution and the associated chemicals affecting individuals, communities, and ecosystems.

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“…In a recent study, German and Nigerian researchers demonstrate that soil samples collected from Abuja's dumpsites in Nigeria, containing e-waste, are contaminated by polybrominated diphenyl ethers (PBDEs). In addition, PBDEs were found in samples such as: chicken eggs, bentgrass, spinach, tomatoes, pumpkin, and sweet potatoes (Oloruntoba et al, 2021). These compounds are utilized in electronic devices and other products as flame retardant.…”

Section: E-waste Contaminationmentioning

confidence: 99%

E-Waste and Its Consequence for Environment and Public Health: Perspectives in Covid-19 Pandemic Times

Ribeiro¹,

Barbosa²,

Ribeiro³

et al. 2022

GJHS

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Every year the electronics industry increases its production and earns billions of dollars. This increase is associated to the growth electronic waste production that, unfortunately, is not followed by the proportional recycling increase. An extensive quantity of e-waste containing several toxic chemical residues, that provoke serious toxic effects for human health, is released in the environment every day. This work it is a mini review about the issue of electronic waste production and its chemical contamination capacity for soil, water, plants, animals, food, and humans. Finally, this mini-review finalize with a small reflection about e-waste in Covid-19's Pandemic times.

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Polybrominated diphenyl ethers (PBDEs) concentrations in soil and plants around municipal dumpsites in Abuja, Nigeria

Cited by 20 publications

References 61 publications

Amino Acid Transporter as a Potential Carrier Protein for the Root-to-Shoot Translocation of Polybrominated Diphenyl Ethers in Rice

Amino Acid Transporter as a Potential Carrier Protein for the Root-to-Shoot Translocation of Polybrominated Diphenyl Ethers in Rice

Chemicals in Plastics - A Technical Report

E-Waste and Its Consequence for Environment and Public Health: Perspectives in Covid-19 Pandemic Times

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