Recently, microplastics (MPs) have attracted extensive attention to their wide distribution and potential toxicity in ecosystems. However, there was a lack of research focused on MPs in seaweed bed ecosystems. This study investigated the distribution and toxicity of MPs in macrobenthos in Sargassum ecosystem. According to the in-situ investigation results, the abundance of MPs in the sediment was 0.9-2.3 items/g, the indoor microcosmic experiment was constructed. After exposure to MPs (0, 2, and 20 items/g) for 30 days, the abundance of MPs in macrobenthos exhibits a concentration-dependent increase. However, there was no significant bioaccumulation of MPs at the trophic level. The indoor toxicity test revealed that MPs induced oxidative stress and altered intestinal microflora composition in macrobenthos, even at actual environmental concentrations (2 items/g). It may result in a perturbation of the organism's homeostatic equilibrium. High-concentration (20 items/g) MPs had a greater impact on alkaline phosphatase (AKP) in Mollusks. The increase in AKP activity could be indicative of an adaptive mechanism in some macrobenthos while the decline in AKP activity might signal a decrease in their survival. These results elucidated the fate of MPs in ecosystem and the ecological risks of MPs to large benthic animals on model environmental conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.envres.2024.119511 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Magnetic particles (FeO) magnify ion transfer processes at the electrified liquid-liquid interface. Case study: Levamisole detection.
Talanta
December 2024
University of Lodz, Department of Inorganic and Analytical Chemistry, Electroanalysis and Electrochemistry Group, Faculty of Chemistry, Tamka 12, 91-403, Lodz, Poland. Electronic address:
This article describes the effect of non-stabilized magnetic particles FeO (nanoparticles aggregates) addition to the aqueous phase of the polarized liquid-liquid interface (LLI) on the interfacial ion transfer processes. LLI was formed between 1,2-dichloroethane and water solutions (1,2 DCE)|water. The synthesis of FeO magnetic particles (MPs) was achieved by the co-precipitation method, after which their appearance, size of aggregates, and zeta potential were assessed.
View Article and Find Full Text PDFThe underestimated environmental risk of tris (2-chloroethyl) phosphate photodegradation in aqueous environment induced by polystyrene microplastics.
Water Res
December 2024
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China. Electronic address:
Tris(2-choroethyl) phosphate (TCEP) is commonly utilized as a flame retardant and plasticizer, which inevitably coexists with polystyrene microplastics (PS-MPs) in aquatic environments. In this work, the promoting effect of pristine and aged PS-MPs on the photodegradation of TCEP was observed, and the reaction mechanisms and environmental risks of PS-MPs enhancing TCEP photodegradation were clearly revealed. The aged PS-MPs presenting more significant enhancement was attributed to more generation of reactive oxygen species (ROS).
View Article and Find Full Text PDFFactors Influencing the Vertical Migration of Microplastics up and down the Soil Profile.
ACS Omega
December 2024
College of Earth Sciences, Jilin University, Changchun 130061, China.
Soil ecosystems are under serious threat from microplastics (MPs), and this is causing worldwide concern. The relationship between soil and MPs has become a popular research topic, and the vertical migration of soil MPs is of increasing interest. This Review summarizes the current status of research into the factors affecting the vertical migration of soil MPs.
View Article and Find Full Text PDFEffects of polystyrene microplastics on the growth and metabolism of highland barley seedlings based on LC-MS.
Front Plant Sci
December 2024
Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China.
Microplastics are widely present in the environment and can adversely affect plants. In this paper, the effects of different concentrations of microplastics on physiological indices and metabolites of highland barley were investigated for the first time using a metabolomics approach, and revealed the response mechanism of barley seedlings to polystyrene microplastics (PS-MPs) was revealed. The results showed that the aboveground biomass of highland barley exposed to low (10 mg/L) and medium (50 mg/L) concentrations of PS-MPs increased by 32.
View Article and Find Full Text PDFInjectable Fibrocartilage-Forming Cores Enhance Bone-Tendon Healing in a Rat Rotator Cuff Model.
Am J Sports Med
January 2025
Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.
Background: After surgical repair of rotator cuff (RC) tears, the torn tendon heals unsatisfactorily to the greater tuberosity owing to limited regeneration of the bone-tendon (BT) insertion. This situation motivates the need for new interventions to enhance BT healing in the RC repair site.
Purpose: To develop injectable fibrocartilage-forming cores by tethering fibroblast growth factor 18 (FGF18) on acellular fibrocartilage matrix microparticles (AFM-MPs) and evaluate their efficacy on BT healing.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!