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Revel M, Freund C, Mouloud M, Perrein-Ettajani H, Métais I, Bruneau M, Yakovenko N, Le Roux R, Caley T, Alogbleto W, Verrier V, Dreanno C, El Rakwe M, Châtel A. Towards the understanding of the uptake and depuration of microplastics in the ragworm Hediste diversicolor: Field and laboratory study. Mar Environ Res 2024; 196:106410. [PMID: 38422819 DOI: 10.1016/j.marenvres.2024.106410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024]
Abstract
An important number of studies have evaluated the presence of microplastics, particles with a size below 5 mm, in aquatic organisms. Studies have shown that these fragments are widely present in the marine environment, but research on the estuarine ecosystem is still scarce. In this study, two different approaches were used to evaluate the presence and ingestion of plastic particles in the ragworm Hediste diversicolor: a field study for the environmental assessment and a laboratory experiment in controlled condition. For the environmental evaluation, ingestion of microplastics was evaluated in the ragworm H. diversicolor sampled from the mudflats of the Seine estuary (France) during March and June 2017 and 2018, on two locations: S1 and S2, both characterized by high anthropogenic pressures, and for S2 a more influential hydrodynamic component. Ingestion of microplastics was measured in ragworms tissues and in gut content (sediment) after depuration. The number of particles as well as their size, shape and color were reported and compared between sampling period and locations. Results showed the presence of a low number of particles in both worms and gut content. In gut content, 45.6% and 87.58% of samples from site S1 and S2 respectively contained plastic like particles. In worms, 41.7% (S1) and 75.8% (S2) of analysed samples contained plastic like items. The lowest mean number of particles was 0.21 ± 0.31 (S1 in June 2017) in worms' tissues, but 0.80 ± 0.90 (S1 in June 2017) in the gut content and the highest was 1.47 ± 1.41 (S2 in April 2017) while the highest number was 2.55 ± 2.06 (S2 in June 2017) in worms and gut content respectively. The majority of suspected microplastics observed were fibers (66%) and fragments (27%), but films (3.7%) foam (2.1%), and granules (0.2%) were also identified. In addition, the most polymer type observed by Raman spectroscopy was polypropylene. Furthermore, a preliminary study of the ingestion and egestion of fluorescent polyethylene (PE) microbeads in the digestive tract of ragworms was conducted after exposure through water, during 1h at 1.2 × 106 MP/mL. Results showed a rapid turnover of PE microbeads throughout the digestive tract of worms especially after exposure through water. This study revealed that microplastics are ingested by the ragworm H. diversicolor but do not seem to bioaccumulate. More research is needed to measure potential chronic effects of microplastics on physiological parameters of H. diversicolor and potential trophic transfer of microplastics.
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Affiliation(s)
- Messika Revel
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France; UniLaSalle Rennes - Ecole des métiers de l'environnement, CYCLANN, campus de Ker Lann, 35830, Bruz, France.
| | - Carla Freund
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Mohammed Mouloud
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Hanane Perrein-Ettajani
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Isabelle Métais
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Mélanie Bruneau
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Nadiia Yakovenko
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Romuald Le Roux
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Timothy Caley
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - William Alogbleto
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Valentin Verrier
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
| | - Catherine Dreanno
- IFREMER, Centre de Brest, Laboratoire Détection Capteurs et Mesures, Plouzané, F-29280, France
| | - Maria El Rakwe
- IFREMER, Centre de Brest, Laboratoire Détection Capteurs et Mesures, Plouzané, F-29280, France
| | - Amélie Châtel
- Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BIOSSE), Université Catholique de l'Ouest, F-49000, Angers, France
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Li X, Li G, Wang J, Li X, Yang Y, Song D. Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments. J Hazard Mater 2024; 466:133655. [PMID: 38310843 DOI: 10.1016/j.jhazmat.2024.133655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/06/2024]
Abstract
The extensive use of plastics has given rise to microplastics, a novel environmental contaminant that has sparked considerable ecological and environmental concerns. Biodegradation offers a more environmentally friendly approach to eliminating microplastics, but their degradation by marine microbial communities has received little attention. In this study, we used iron-enhanced marine sediment to augment the natural bacterial community and facilitate the decomposition of polyethylene (PE) microplastics. The introduction of iron-enhanced sediment engendered an augmented bacterial biofilm formation on the surface of polyethylene (PE), thereby leading to a more pronounced degradation effect. This novel observation has been ascribed to the oxidative stress-induced generation of a variety of oxygenated functional groups, including hydroxyl (-OH), carbonyl (-CO), and ether (-C-O) moieties, within the microplastic substrate. The analysis of succession in the community structure of sediment bacteria during the degradation phase disclosed that Acinetobacter and Pseudomonas emerged as the principal bacterial players in PE degradation. These taxa were directly implicated in oxidative metabolic pathways facilitated by diverse oxidase enzymes under iron-facilitated conditions. The present study highlights bacterial community succession as a new pivotal factor influencing the complex biodegradation dynamics of polyethylene (PE) microplastics. This investigation also reveals, for the first time, a unique degradation pathway for PE microplastics orchestrated by the multifaceted marine sediment microbiota. These novel insights shed light on the unique functional capabilities and internal biochemical mechanisms employed by the marine sediment microbiota in effectively degrading polyethylene microplastics.
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Affiliation(s)
- Xionge Li
- College of Marine and Environmental, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Guangbi Li
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jiaxin Wang
- College of Marine and Environmental, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xinyi Li
- College of Marine and Environmental, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yuru Yang
- College of Marine and Environmental, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Donghui Song
- College of Marine and Environmental, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin 300457, China.
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Zhang Y, Qin K, Liu C. Low-density polyethylene enhances the disturbance of microbiome and antibiotic resistance genes transfer in soil-earthworm system induced by pyraclostrobin. J Hazard Mater 2024; 465:133459. [PMID: 38219581 DOI: 10.1016/j.jhazmat.2024.133459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
Non-antibiotic chemicals in farmlands, including microplastics (MPs) and pesticides, have the potential to influence the soil microbiome and the dissemination of antibiotic resistance genes (ARGs). Despite this, there is limited understanding of the combined effects of MPs and pesticides on microbial communities and ARGs transmission in soil ecosystems. In this study, we observed that low-density polyethylene (LDPE) microplastic enhance the accumulation of pyraclostrobin in earthworms, resulting in reduced weight and causing severe oxidative damage. Analysis of 16 S rRNA amplification revealed that exposure to pyraclostrobin and/or LDPE disrupts the microbial community structure at the phylum and genus levels, leading to reduced alpha diversity in both the soil and earthworm gut. Furthermore, co-exposure to LDPE and pyraclostrobin increased the relative abundance of ARGs in the soil and earthworm gut by 2.15 and 1.34 times, respectively, compared to exposure to pyraclostrobin alone. It correlated well with the increasing relative abundance of genera carrying ARGs. Our findings contribute novel insights into the impact of co-exposure to MPs and pesticides on soil and earthworm microbiomes, highlighting their role in promoting the transfer of ARGs. This knowledge is crucial for managing the risk associated with the dissemination of ARGs in soil ecosystems.
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Affiliation(s)
- Yirong Zhang
- National Key Laboratory of Green Pesticide, College of Plant Protection, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Kaikai Qin
- National Key Laboratory of Green Pesticide, College of Plant Protection, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Chenglan Liu
- National Key Laboratory of Green Pesticide, College of Plant Protection, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China.
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Guo F, Liu B, Zhao J, Hou Y, Wu J, Zhou C, Hu H, Zhang T, Yang Z. Effects of polyethylene, polylactic acid, and tire particles on the sediment microbiome and metabolome at high and low temperatures. Appl Environ Microbiol 2024; 90:e0201623. [PMID: 38214515 PMCID: PMC10880613 DOI: 10.1128/aem.02016-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/01/2023] [Indexed: 01/13/2024] Open
Abstract
Global warming has led to a high incidence of extreme heat events, and the frequent occurrence of extreme heat events has had extensive and far-reaching impacts on wetland ecosystems. The widespread distribution of plastics in the environment, including polyethylene (PE), polylactic acid (PLA), and tire particles (TPs), has caused various environmental problems. Here, high-throughput sequencing techniques and metabolomics were used for the first time to investigate the effects of three popular microplastic types: PE, PLA, and TP, on the sediment microbiome and the metabolome at both temperatures. The microplastics were incorporated into the sediment at a concentration of 3% by weight of the dry sediment (wt/wt), to reflect environmentally relevant conditions. Sediment enzymatic activity and physicochemical properties were co-regulated by both temperatures and microplastics producing significant differences compared to controls. PE and PLA particles inhibited bacterial diversity at low temperatures and promoted bacterial diversity at high temperatures, and TP particles promoted both at both temperatures. For bacterial richness, only PLA showed inhibition at low temperature; all other treatments showed promotion. PE, PLA, and TP microplastics changed the community structure of sediment bacteria, forming two clusters at low and high temperatures. Furthermore, PE, PLA, and TP changed the sediment metabolic profiles, producing differential metabolites such as lipids and molecules, organic heterocyclic compounds, and organic acids and their derivatives, especially TP had the most significant effect. These findings contribute to a more comprehensive understanding of the potential impact of microplastic contamination.IMPORTANCEIn this study, we added 3% (wt/wt) microplastic particles, including polyethylene, polylactic acid, and tire particles, to natural sediments under simulated laboratory conditions. Subsequently, we simulated the sediment microbial and ecosystem responses under different temperature conditions by incubating them for 60 days at 15°C and 35°C, respectively. After synthesizing these results, our study strongly suggests that the presence of microplastics in sediment ecosystems and exposure under different temperature conditions may have profound effects on soil microbial communities, enzyme activities, and metabolite profiles. This is important for understanding the potential hazards of microplastic contamination on terrestrial ecosystems and for developing relevant environmental management strategies.
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Affiliation(s)
- Feng Guo
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
- School of Environment and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan, China
| | - Biao Liu
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Jiaying Zhao
- School of Environment and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan, China
| | - Yiran Hou
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Junfeng Wu
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Changrui Zhou
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Hui Hu
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Tingting Zhang
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, China
| | - Ziyan Yang
- School of Environment and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan, China
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Masseroni A, Fossati M, Ponti J, Schirinzi G, Becchi A, Saliu F, Soler V, Collini M, Della Torre C, Villa S. Sublethal effects induced by different plastic nano-sized particles in Daphnia magna at environmentally relevant concentrations. Environ Pollut 2024; 343:123107. [PMID: 38070641 DOI: 10.1016/j.envpol.2023.123107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/14/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023]
Abstract
A growing number of studies have reported the toxic effects of nanoplastics (NPs) on organisms. However, the focus of these studies has almost exclusively been on the use of polystyrene (PS) nanospheres. Herein, we aim to evaluate the sublethal effects on Daphnia magna juveniles of three different NP polymers: PS-NPs with an average size of 200 nm, polyethylene [PE] NPs and polyvinyl chloride [PVC] NPs with a size distribution between 50 and 350 nm and a comparable mean size. For each polymer, five environmentally relevant concentrations were tested (from 2.5 to 250 μg/L) for an exposure time of 48 h. NP effects were assessed at the biochemical level by investigating the amount of reactive oxygen species (ROS) and the activity of the antioxidant enzyme catalase (CAT) and at the behavioral level by evaluating the swimming behavior (distance moved). Our results highlight that exposure to PVC-NPs can have sublethal effects on Daphnia magna at the biochemical and behavioral levels. The potential role of particle size on the measured effects cannot be excluded as PVC and PE showed a wider size range distribution than PS, with particles displaying sizes from 50 to 350 nm. However, we infer that the chemical structure of PVC, which differs from that of PE of the same range size, concurs to explain the observed effects. Consequently, as PS seems not to be the most hazardous polymer, we suggest that the use of data on PS toxicity alone can lead to an underestimation of NP hazards.
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Affiliation(s)
- Andrea Masseroni
- Department of Earth and Environmental Sciences, DISAT, University of Milano-Bicocca, Piazza Della Scienza 1, 20126, Milan, Italy
| | - Marco Fossati
- Department of Biosciences, University of Milan, Via Giovanni Celoria 26, 20133, Milan, Italy
| | - Jessica Ponti
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Alessandro Becchi
- Department of Earth and Environmental Sciences, DISAT, University of Milano-Bicocca, Piazza Della Scienza 1, 20126, Milan, Italy
| | - Francesco Saliu
- Department of Earth and Environmental Sciences, DISAT, University of Milano-Bicocca, Piazza Della Scienza 1, 20126, Milan, Italy
| | - Valentina Soler
- Department of Earth and Environmental Sciences, DISAT, University of Milano-Bicocca, Piazza Della Scienza 1, 20126, Milan, Italy
| | - Maddalena Collini
- Department of Physics "Giuseppe Occhialini, " University of Milano-Bicocca, Piazza Della Scienza 3, 20126, Milan, Italy
| | - Camilla Della Torre
- Department of Biosciences, University of Milan, Via Giovanni Celoria 26, 20133, Milan, Italy
| | - Sara Villa
- Department of Earth and Environmental Sciences, DISAT, University of Milano-Bicocca, Piazza Della Scienza 1, 20126, Milan, Italy.
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da Costa Brito S, Pereira VAC, Prado ACF, Tobias TJ, Paris EC, Ferreira MD. Antimicrobial potential of linear low-density polyethylene food packaging with Ag nanoparticles in different carriers (Silica and Hydroxyapatite). J Microbiol Methods 2024; 217-218:106873. [PMID: 38128700 DOI: 10.1016/j.mimet.2023.106873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 11/26/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Silver nanoparticles incorporation into polymeric packaging aims to prevent microbiological contamination in food products, thus ensuring superior food safety and preservation. In this context, this study aimed to verify the antimicrobial efficacy of linear low-density polyethylene (LLDPE) films incorporated with silver nanoparticles (AgNPs) dispersed in silica (SiO2) and hydroxyapatite (HAP) carriers at different concentrations. AgNPs + carriers polymer films were characterized at 0.2, 0.4, and 0.6% concentrations using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission gun-scanning electron microscope (FEG-SEM), thermogravimetric analyzer (TGA), differential scanning calorimetry (DSC), and migration in acidic and non-acidic simulants. Antimicrobial action was investigated on Gram-positive Staphylococcus aureus, Gram-negative Escherichia coli, and the Penicillium expansum and Fusarium solani fungi with antimicrobial activity by direct contact test and bacterial imaging by scanning electron microscopy. AgNPs addition to the LLDPE matrix did not interfere with the films' chemical and thermal properties and presented no significant migration to the external medium. For antimicrobial action, silver nanoparticles showed, in most concentrations, an inhibition percentage higher than 90% on all microorganisms studied, regardless of the carrier. However, a greater inhibitory action on S. aureus and between carriers was found, making hydroxyapatite more effective. The results indicated that nanostructured films with AgNPs + hydroxyapatite showed more promising antimicrobial action on microorganisms than AgNPs + silica, making hydroxyapatite with silver nanoparticle potentially useful in food packaging, improving safety and maintaining quality.
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Affiliation(s)
- Sabrina da Costa Brito
- Postgraduate Program in Food Science and Engineering, São Paulo State University "Julio de Mesquita Filho", Rod. Araraquara Jaú, Km 01, 14800-903 Araraquara, SP, Brazil; Embrapa Instrumentação, Rua XV de Novembro, 1452, 13560-970 São Carlos, SP, Brazil
| | - Vinicius Alex Cano Pereira
- Embrapa Instrumentação, Rua XV de Novembro, 1452, 13560-970 São Carlos, SP, Brazil; Biotechnology Graduate Program, Federal University of São Carlos, Rod. Washington Luís, Km 235 - C. P.676, 13.565-905 São Carlos, SP, Brazil
| | - Ana Carolina Figueiredo Prado
- Embrapa Instrumentação, Rua XV de Novembro, 1452, 13560-970 São Carlos, SP, Brazil; Postgraduate Program in Materials Science and Engineering, Federal University of São Carlos, Rod. Washington Luís, Km 235 - C. P.676, 13.565-905 São Carlos, SP, Brazil
| | - Thais Juliana Tobias
- Chemistry Graduate Program, University of Sao Paulo, Av. Trabalhador São-carlense, 400, 13.560-970 São Carlos, SP, Brazil
| | - Elaine Cristina Paris
- Embrapa Instrumentação, Rua XV de Novembro, 1452, 13560-970 São Carlos, SP, Brazil; Postgraduate Program in Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 235 - C. P.676, 13.565-905 São Carlos, SP, Brazil
| | - Marcos David Ferreira
- Postgraduate Program in Food Science and Engineering, São Paulo State University "Julio de Mesquita Filho", Rod. Araraquara Jaú, Km 01, 14800-903 Araraquara, SP, Brazil; Embrapa Instrumentação, Rua XV de Novembro, 1452, 13560-970 São Carlos, SP, Brazil.
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Oliver C, Ruiz P, Vidal JM, Carrasco C, Escalona CE, Barros J, Sepúlveda D, Urrutia H, Romero A. Effect of florfenicol on Piscirickettsia salmonis biofilm formed in materials used in salmonid nets, nylon and high-density polyethylene. J Fish Dis 2024; 47:e13862. [PMID: 37776076 DOI: 10.1111/jfd.13862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 10/01/2023]
Abstract
Piscirickettsiosis is the most prevalent bacterial disease affecting seawater salmon in Chilean salmon industry. Antibiotic therapy is the first alternative to counteract infections caused by Piscirickettsia salmonis. The presence of bacterial biofilms on materials commonly used in salmon farming may be critical for understanding the bacterial persistence in the environment. In the present study, the CDC Biofilm Reactor® was used to investigate the effect of sub- and over-MIC of florfenicol on both the pre-formed biofilm and the biofilm formation by P. salmonis under the antibiotic stimuli on Nylon and high-density polyethylene (HDPE) surfaces. This study demonstrated that FLO, at sub- and over-MIC doses, decreases biofilm-embedded live bacteria in the P. salmonis isolates evaluated. However, it was shown that in the P. salmonis Ps007 strain the presence of sub-MIC of FLO reduced its biofilm formation on HDPE surfaces; however, biofilm persists on Nylon surfaces. These results demonstrated that P. salmonis isolates behave differently against FLO and also, depending on the surface materials. Therefore, it remains a challenge to find an effective strategy to control the biofilm formation of P. salmonis, and certainly other marine pathogens that affect the sustainability of the Chilean salmon industry.
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Affiliation(s)
- Cristian Oliver
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Pamela Ruiz
- Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, Talcahuano, Chile
| | - José Miguel Vidal
- Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
- Departamento de Investigación y Desarrollo, Ecombio Limitada, Concepción, Chile
| | - Carlos Carrasco
- Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Carla Estefanía Escalona
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Javier Barros
- Departamento de Investigación y Desarrollo, Micbiotech Spa, Concepción, Chile
| | - Daniela Sepúlveda
- Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Homero Urrutia
- Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
- Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Alex Romero
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research, (INCAR), Concepción, Chile
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Zeidi A, Sayadi MH, Rezaei MR, Banaee M, Gholamhosseini A, Pastorino P, Multisanti CR, Faggio C. Single and combined effects of CuSO 4 and polyethylene microplastics on biochemical endpoints and physiological impacts on the narrow-clawed crayfish Pontastacusleptodactylus. Chemosphere 2023; 345:140478. [PMID: 37865200 DOI: 10.1016/j.chemosphere.2023.140478] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023]
Abstract
This study investigated the toxicity of polyethylene microplastics (MPs; <0.02 mm) and CuSO4, alone and in combination, on the freshwater crayfish Pontastacus leptodactylus. In this study, the crayfish were exposed to PE-MPs (0.0, 0.5, and 1 mg L-1) and CuSO4·5H2O (0.0, 0.5, and 1 mg L-1) for a period of 28 days. Next, multi-biomarkers, including biochemical, immunological, and oxidative stress indicators were analyzed. Results showed that co-exposure to PE-MPs and CuSO4 resulted in increased aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), and decreased alkaline phosphatase (ALP), butyrylcholinesterase (BChE), and gamma-glutamyl-transferase (GGT). Triglycerides, cholesterol, glucose, and albumin content also increased. Although no significant change was observed in lysozyme and phenoloxidase activities in crayfish co-exposed to 0.5 mg L-1 MPs and 0.5 mg L-1 CuSO4, their activities were significantly decreased in other experimental groups. Oxidative stress parameters in hepatopancreas indicated increased superoxide dismutase (SOD), glutathione peroxidase (GPx), and in malondialdehyde (MDA) levels, but decreased catalase (CAT), glucose 6-phosphate dehydrogenase (G6PDH), and cellular total antioxidant (TAC). Results showed that the sub-chronic toxicity of CuSO4 was confirmed. The study confirmed the toxicity of CuSO4 and found that higher concentrations led to more severe effects. Co-exposure to PE-MPs and CuSO4 primarily compromised the endpoints, showing increased toxicity when both pollutants were present in higher concentrations. The activities of POX, LYZ, ALP, GGT, LDH, and CAT were suppressed by both CuSO4 and MPs. However, a synergistic increase was observed in other measured biomarkers in crayfish co-exposed to CuSO4 and MPs.
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Affiliation(s)
- Amir Zeidi
- Aquaculture Department, Faculty of Natural Resources and Environment, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran.
| | - Mohammad Hossein Sayadi
- Department of Agriculture, Faculty of Natural Resources and Environment, Shahid Bahonar University of Kerman, Kerman, Iran.
| | - Mohammad Reza Rezaei
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran.
| | - Mahdi Banaee
- Aquaculture Department, Faculty of Natural Resources and Environment, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran.
| | - Amin Gholamhosseini
- Division of Aquatic Animal Health & Diseases, Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
| | - Paolo Pastorino
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Torino, Italy.
| | - Cristiana Roberta Multisanti
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.
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9
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Savva K, Farré M, Barata C. Sublethal effects of bio-plastic microparticles and their components on the behaviour of Daphnia magna. Environ Res 2023; 236:116775. [PMID: 37517491 DOI: 10.1016/j.envres.2023.116775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/12/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Bioplastics arise as an alternative to plastic production delinked from fossil resources. However, as their demand is increasing, there is a need to investigate their environmental fingerprint. Here we study the toxicity of microplastics (MPLs) of two widely used materials, the polylactic acid (PLA) and the polyhydroxybutyrate (PHB) on the environmental aquatic model species Daphnia magna. The study was focused on sublethal behavioural and feeding endpoints linked to antipredator scape responses and food intake. The study aimed to test that MPLs from single-use household comercial items and among them bioplastics should be more toxic than those obtained from standard plastic polymers and fossil plastic materials due to the greater amount of plastic additives, and that MPLs should be more toxic than plastic extracts due to the contribution of both particle and plastic additive toxicity. MPLs were obtained by cryogenic grinding and sea-sand erosion to obtain irregular particles. MPL included standard polymers and nine comercial items of PLA and PHB and one fossil-based material of high-density polyethylene (HDPE). The additive content in commercial items was characterised by liquid chromatography coupled with high-resolution mass spectrometry. D. magna juveniles were exposed for 24 h to particles and their plastic extracts. Results indicated that the toxicity of bioplastic particles was five times higher than the effects produced by exposure to the content of the additives alone, that bioplastic particles were more toxic than fossil ones and that particles obtained from commercial items were more toxic than those obtained from PLA, PHB or HDPE polymer standards. Predicted toxicity from the measured plastic additives in the studied commercially available household items, however, was poorly related with the observed behavioural and feeding effects. Further research on unknown chemical components together with physical factors is need it to fully understand the mechanisms of toxicity of bioplastic materials.
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Affiliation(s)
- Katerina Savva
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18, 08034, Barcelona, Spain
| | - Marinella Farré
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18, 08034, Barcelona, Spain
| | - Carlos Barata
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18, 08034, Barcelona, Spain.
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10
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Yang F, Chen Z, Zhai X, Yang GP, He Z. [Effects of Polyethylene Microplastics on Growth and Halocarbon Release of Marine Microalgae]. Huan Jing Ke Xue 2023; 44:5852-5860. [PMID: 37827800 DOI: 10.13227/j.hjkx.202208056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Volatile halocarbons (VHCs) are important trace greenhouse gases and ozone-destroying substances and play an important role in global climate change. As an important producer of VHCs, the release of VHCs by marine microalgae is affected by marine environmental factors. Microplastics are an important pollutant in the ocean; however, there are few studies on VHCs release from marine microalgae under the influence of microplastics. This study aimed to explore the effects of different concentrations of polyethylene (PE) microplastics on the growth, photosynthesis, oxidative stress, and release of VHCs by diatoms and dinoflagellates by measuring the density of algae, maximum photoquantum efficiency (Fv/Fm), reactive oxygen species (ROS), and concentration of VHCs. The results revealed that PE microplastics mainly inhibited the growth of Nitzschia closterium f. minutissima and promoted the growth of Prorocentrum donghaiense. The addition of 50 μm PE microplastics had a shielding effect on the growth of the two microalgae, resulting in the inhibition of Fv/Fm of two kinds of microalgae, and the inhibition effect of PE microplastics on P. donghaiense was more significant. Compared with that in the control group, PE microplastic stress stimulated the increase in ROS production in algal cells, which caused an oxidative stress response in these microalgae, thereby promoting the release of three types of volatile brominated halocarbons.
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Affiliation(s)
- Fan Yang
- Key Laboratory of Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Zhi Chen
- Key Laboratory of Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Xing Zhai
- Key Laboratory of Marine Eco-Environmental Science and Technology, Ministry of Natural Resources, Qingdao 266061, China
| | - Gui-Peng Yang
- Key Laboratory of Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Zhen He
- Key Laboratory of Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
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11
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Li Y, Feng H, Xian S, Wang J, Zheng X, Song X. Phytotoxic effects of polyethylene microplastics combined with cadmium on the photosynthetic performance of maize (Zea mays L.). Plant Physiol Biochem 2023; 203:108065. [PMID: 37797385 DOI: 10.1016/j.plaphy.2023.108065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Microplastics (MPs) and cadmium (Cd) has attracted increasing attention due to their combined toxicity to terrestrial vegetation. Photosynthesis which utilizes light energy to synthesize organic substances is crucial for crop production. However, the plant photosynthetic response to the joint toxicity of MPs and Cd is still unknown. Here, we studied the effects of polyethylene (PE) MPs on the photosynthetic performance of two maize cultivars Xianyu 335 (XY) and Zhengdan 958 (ZD) grown in a Cd contaminated soil. Results showed that the leaf Cd concentration in XY and ZD reached 26.1 and 31.9 μg g-1, respectively. PE-MPs did not influence the leaf Cd content, but posed direct and negative effects on photosynthesis by increasing the malondialdehyde content, reducing the chlorophyll content, inhibiting photosynthetic capacity, disrupting the PSII donor side, blocking electron transfer in different photosystems, and suppressing the oxidation and reduction states of PSI. Transcriptomic analysis revealed that the inhibitory effect of combined PE-MPs and Cd on maize photosynthesis was attributed to suppressed expression of the genes encoding PSII, PSI, F-type ATPase, cytochrome b6/f complex, and electron transport between PSII and PSI. Using WGCNA, we identified a MEturquoise module highly correlated with photosynthetic traits. Hub genes bridging carbohydrate metabolism, amino acid metabolism, lipid metabolism, and translation provided the molecular mechanisms of PE-MPs and Cd tolerance in maize plants. The comprehensive information on the phytotoxicity mechanisms of Cd stress in the presence or absence of PE-MPs on the photosynthesis of maize is helpful for cloning Cd and PE-MP resistance genes in the future.
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Affiliation(s)
- Yan Li
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Hongyu Feng
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Shutong Xian
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Jiawei Wang
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Xuebo Zheng
- Institute of Tobacco Research of CAAS, Qingdao, 266101, China.
| | - Xiliang Song
- College of Life Sciences, Dezhou University, De'zhou, 253023, China.
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12
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Palansooriya KN, Sang MK, El-Naggar A, Shi L, Chang SX, Sung J, Zhang W, Ok YS. Low-density polyethylene microplastics alter chemical properties and microbial communities in agricultural soil. Sci Rep 2023; 13:16276. [PMID: 37770500 PMCID: PMC10539289 DOI: 10.1038/s41598-023-42285-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 09/07/2023] [Indexed: 09/30/2023] Open
Abstract
Microplastic (MP) pollution in agricultural soils, resulting from the use of plastic mulch, compost, and sewage sludge, jeopardizes the soil microbial populations. However, the effects of MPs on soil chemical properties and microbial communities remain largely unknown. Here, we investigated the effects of different concentration levels (0, 0.1, 1, 3, 5, and 7%; w:w) of low-density polyethylene (LDPE) MPs on the chemical properties and bacterial communities of agricultural soil in an incubation study. The addition of LDPE MPs did not drastically change soil pH (ranging from 8.22 to 8.42). Electrical conductivity increased significantly when the LDPE MP concentrations were between 1 and 7%, whereas the total exchangeable cations (Na+, K+, Mg2+, and Ca2+) decreased significantly at higher LDPE MP concentrations (3-7%). The highest available phosphorus content (2.13 mg kg-1) was observed in 0.1% LDPE MP. Bacterial richness (Chao1 and Ace indices) was the lowest at 0.1% LDPE MP, and diversity indices (Shannon and Invsimpson) were higher at 0 and 1% LDPE MP than at other concentrations. The effect of LDPE MP concentrations on bacterial phyla remained unchanged, but the bacterial abundance varied. The relative abundance of Proteobacteria (25.8-33.0%) was the highest in all treatments. The abundance of Acidobacteria (15.8-17.2%) was also high, particularly in the 0, 0.1, and 1% LDPE MPs. With the increase in LDPE MP concentration, the abundance of Actinobacteria gradually increased from 7.80 to 31.8%. Our findings suggest that different MP concentration levels considerably alter soil chemical properties and microbial composition, which may potentially change the ecological functions of soil ecosystems.
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Affiliation(s)
- Kumuduni Niroshika Palansooriya
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
- Department of Renewable Resources, University of Alberta, Edmonton, AB, T6G 2E3, Canada
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Mee Kyung Sang
- Division of Agricultural Microbiology, Rural Development Administration, National Institute of Agricultural Science, Wanju, 55365, Republic of Korea
| | - Ali El-Naggar
- Department of Soil Sciences, Faculty of Agriculture, Ain Shams University, Cairo, 11241, Egypt
| | - Liang Shi
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Scott X Chang
- Department of Renewable Resources, University of Alberta, Edmonton, AB, T6G 2E3, Canada
| | - Jwakyung Sung
- Department of Crop Science, College of Agriculture, Life Science and Environmental Chemistry, Chungbuk National University, Cheongju, 28644, Chungcheongbuk-Do, Republic of Korea
| | - Wei Zhang
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, 510006, China.
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
- Institute of Green Manufacturing Technology, College of Engineering, Korea University, Seoul, 02841, Republic of Korea.
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13
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Pawde S, Chaudhari SR, Prabhasankar P, Matche RS. LDPE-Natural Rubber Composite Film as Active Packaging: A Paradigm Shift in Oxygen Scavengers. ACS Appl Mater Interfaces 2023; 15:38729-38740. [PMID: 37540758 DOI: 10.1021/acsami.3c05168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Oxygen scavenging films, an emerging type of active packaging, play a crucial role in preserving the freshness and quality of food products. In this study, we proposed an extruded film made of low-density polyethylene (LDPE) with 5% natural rubber (NR) as the oxygen scavenging film. Characterization of the film revealed that its morphological and barrier properties remained intact, while the elongation attribute was enhanced. The obtained film was standardized for activation scavenging kinetics by varying the UV dose (time and distance). At the optimal UV dose, the film exhibited a total scavenging capacity of 61 cc/g. To assess the film's functionality, FTIR spectra were analyzed before and after exposure to oxygen, confirming the film's ability to scavenge oxygen based on observed peaks at 1718 and 3425 cm-1. Considering that bread and khoa (fatty food) are sensitive to oxygen, they were selected for testing the application of the oxygen scavenging film. Sensory analysis of bread samples, including appearance and mold formation, as well as microbial load studies, indicated that the shelf life of bread increased from 2-3 days (control) to 4-5 days when packed in the NR-based film and stored at 27 ± 2 °C. Similarly, when applied to khoa, the film extended its shelf life by 3 days compared to the control while maintaining sensory attributes and preserving nutritional value, such as fatty acids. In general, the developed oxygen scavenging film effectively prevents the detrimental effects of oxygen on food products, leading to an extension of their shelf life. This has significant implications for the food industry, as it helps mitigate the negative consequences of oxygen exposure and enhances the product shelf life.
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Affiliation(s)
- Subhash Pawde
- AcSIR-Academy of Scientific & Innovative Research, Ghaziabad 201002, Uttar Pradesh, India
| | - Sachin R Chaudhari
- AcSIR-Academy of Scientific & Innovative Research, Ghaziabad 201002, Uttar Pradesh, India
| | - Pichan Prabhasankar
- AcSIR-Academy of Scientific & Innovative Research, Ghaziabad 201002, Uttar Pradesh, India
| | - Rajeshwar S Matche
- AcSIR-Academy of Scientific & Innovative Research, Ghaziabad 201002, Uttar Pradesh, India
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14
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Huang S, Guo T, Feng Z, Li B, Cai Y, Ouyang D, Gustave W, Ying C, Zhang H. Polyethylene and polyvinyl chloride microplastics promote soil nitrification and alter the composition of key nitrogen functional bacterial groups. J Hazard Mater 2023; 453:131391. [PMID: 37043864 DOI: 10.1016/j.jhazmat.2023.131391] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 03/29/2023] [Accepted: 04/07/2023] [Indexed: 05/03/2023]
Abstract
Microplastics (MPs) contamination in soils seriously threatens agroecosystems globally. However, very few studies have been done on the effects of MPs on the soil nitrogen cycle and related functional microorganisms. To assess MP's impact on the soil nitrogen cycle and related functional bacteria, we carried out a one-month soil incubation experiment using typical acidic soil. The soil was amended with alfalfa meal and was spiked with 1% and 5% (mass percentage) of low-density polyethylene (LDPE) and polyvinyl chloride (PVC) MPs. Our results showed that both LDPE and PVC addition significantly increased soil nitrification rate and nitrate reductase activity, which could further promote soil denitrification. The relative abundance of diazotrophs, ammonium oxidizing, and denitrifying bacterial groups were significantly altered with MPs addition. Moreover, the MPs treatments greatly enhanced denitrifying bacteria richness. Redundancy analysis showed that nitrate reductase activity was the most significant factor affecting the soil functional bacterial community. Correlation analysis shows that Nitrosospira genus might be for the improvement of soil nitrification rate. Our results implied that MPs exposure could significantly affect the soil nitrogen cycling in farmland ecosystems by influencing essential nitrogen functional microorganisms and related enzymatic activities.
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Affiliation(s)
- Shunyin Huang
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Ting Guo
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Zhen Feng
- School of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Baochen Li
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yimin Cai
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Da Ouyang
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Williamson Gustave
- School of Chemistry, Environmental & Life Sciences, University of The Bahamas, Nassau, New Providence, Bahamas
| | - Chengfei Ying
- School of Humanities and Law, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Haibo Zhang
- Zhejiang Provincial Key laboratory of Soil Contamination Bioremediation, School of Environment and Resources, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China.
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15
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Zhang Q, Gong K, Shao X, Liang W, Zhang W, Peng C. Effect of polyethylene, polyamide, and polylactic acid microplastics on Cr accumulation and toxicity to cucumber (Cucumis sativus L.) in hydroponics. J Hazard Mater 2023; 450:131022. [PMID: 36857824 DOI: 10.1016/j.jhazmat.2023.131022] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Microplastics (MPs) in farmland soil may affect the environmental fate and toxicity of heavy metals; however, how non-biodegradable and biodegradable MPs change the accumulation and phytotoxicity of Cr(VI) to the plants is still unknown. In this study, we explored the impacts of Cr(VI) concentrations (0, 20, 50, 100, 200, and 500 μmol/L), MP types (polyethylene (PE), polyamide (PA), and polylactic acid (PLA)), sizes (13, 48, and 500 µm), and concentrations (40, 200, and 1000 mg/L) on the Cr accumulation and toxicity to cucumber (Cucumis sativus L.) under hydroponic conditions for 14 days. The results show that the presence of PE-MPs promoted the Cr accumulation in root by 8-39.8%. However, PA-MPs inhibited the Cr accumulation in the whole plant under less than 100 μmol/L Cr(VI). Notably, 1000 mg/L PA-MPs significantly reduced Cr accumulation in root and stem by 44.70% and 48.20%, respectively. Moreover, PE-MPs and PLA-MPs reduced the chlorophyll content and slowed down the growth of seedlings, while PA-MPs were beneficial to the growth of cucumber under 50-500 μmol/L Cr(VI) treatments, increasing the biomass by 20.99-189.99%. Furthermore, PE-MPs enhanced the content of MDA, especially under 500 μmol/L Cr(VI) concentration by 27.39%; however, the addition of PA-MPs and PLA-MPs slightly enhanced the enzyme activities including superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT). Significantly, 1000 mg/L PA-MPs promoted biomass and reduced MDA content compared the control due to their high Cr(VI) adsorption efficiency. Thus, MP type, especially PE-MPs, mainly determined the Cr accumulation and phytotoxicity, which was attributed to the various adsorption capacities of MPs to Cr(VI).
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Affiliation(s)
- Qi Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Kailin Gong
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuechun Shao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weiyu Liang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Cheng Peng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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16
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Chen S, Yang JL, Zhang YS, Wang HY, Lin XY, Xue RY, Li MY, Li SW, Juhasz AL, Ma LQ, Zhou DM, Li HB. Microplastics affect arsenic bioavailability by altering gut microbiota and metabolites in a mouse model. Environ Pollut 2023; 324:121376. [PMID: 36863442 DOI: 10.1016/j.envpol.2023.121376] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Microplastics exposure is a new human health crisis. Although progress in understanding health effects of microplastic exposure has been made, microplastic impacts on absorption of co-exposure toxic pollutants such as arsenic (As), i.e., oral bioavailability, remain unclear. Microplastic ingestion may interfere As biotransformation, gut microbiota, and/or gut metabolites, thereby affecting As oral bioavailability. Here, mice were exposed to arsenate (6 μg As g-1) alone and in combination with polyethylene particles of 30 and 200 μm (PE-30 and PE-200 having surface area of 2.17 × 103 and 3.23 × 102 cm2 g-1) in diet (2, 20, and 200 μg PE g-1) to determine the influence of microplastic co-ingestion on arsenic (As) oral bioavailability. By determining the percentage of cumulative As consumption recovered in urine of mice, As oral bioavailability increased significantly (P < 0.05) from 72.0 ± 5.41% to 89.7 ± 6.33% with PE-30 at 200 μg PE g-1 rather than with PE-200 at 2, 20, and 200 μg PE g-1 (58.5 ± 19.0%, 72.3 ± 6.28%, and 69.2 ± 17.8%). Both PE-30 and PE-200 exerted limited effects on pre- and post-absorption As biotransformation in intestinal content, intestine tissue, feces, and urine. They affected gut microbiota dose-dependently, with lower exposure concentrations having more pronounced effects. Consistent with the PE-30-specific As oral bioavailability increase, PE exposure significantly up-regulated gut metabolite expression, and PE-30 exerted greater effects than PE-200, suggesting that gut metabolite changes may contribute to As oral bioavailability increase. This was supported by 1.58-4.07-fold higher As solubility in the presence of up-regulated metabolites (e.g., amino acid derivatives, organic acids, and pyrimidines and purines) in the intestinal tract assessed by an in vitro assay. Our results suggested that microplastic exposure especially smaller particles may exacerbate the oral bioavailability of As, providing a new angle to understand health effects of microplastics.
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Affiliation(s)
- Shan Chen
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Jin-Lei Yang
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yao-Sheng Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Hong-Yu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xin-Ying Lin
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Rong-Yue Xue
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Meng-Ya Li
- Jiangsu Province Engineering Research Center of Soil and Groundwater Pollution Prevention and Control, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
| | - Shi-Wei Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Albert L Juhasz
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Lena Q Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Dong-Mei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Hong-Bo Li
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing, 210023, China.
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17
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Teissier V, Gao Q, Shen H, Li J, Li X, Huang EE, Kushioka J, Toya M, Tsubosaka M, Hirata H, Alizadeh HV, Maduka CV, Contag CH, Yang YP, Zhang N, Goodman SB. Metabolic profile of mesenchymal stromal cells and macrophages in the presence of polyethylene particles in a 3D model. Stem Cell Res Ther 2023; 14:99. [PMID: 37085909 PMCID: PMC10122387 DOI: 10.1186/s13287-023-03260-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/23/2023] [Indexed: 04/23/2023] Open
Abstract
BACKGROUND Continuous cross talk between MSCs and macrophages is integral to acute and chronic inflammation resulting from contaminated polyethylene particles (cPE); however, the effect of this inflammatory microenvironment on mitochondrial metabolism has not been fully elucidated. We hypothesized that (a) exposure to cPE leads to impaired mitochondrial metabolism and glycolytic reprogramming and (b) macrophages play a key role in this pathway. METHODS We cultured MSCs with/without uncommitted M0 macrophages, with/without cPE in 3-dimensional gelatin methacrylate (3D GelMA) constructs/scaffolds. We evaluated mitochondrial function (membrane potential and reactive oxygen species-ROS production), metabolic pathways for adenosine triphosphate (ATP) production (glycolysis or oxidative phosphorylation) and response to stress mechanisms. We also studied macrophage polarization toward the pro-inflammatory M1 or the anti-inflammatory M2 phenotype and the osteogenic differentiation of MSCs. RESULTS Exposure to cPE impaired mitochondrial metabolism of MSCs; addition of M0 macrophages restored healthy mitochondrial function. Macrophages exposed to cPE-induced glycolytic reprogramming, but also initiated a response to this stress to restore mitochondrial biogenesis and homeostatic oxidative phosphorylation. Uncommitted M0 macrophages in coculture with MSC polarized to both M1 and M2 phenotypes. Osteogenesis was comparable among groups after 21 days. CONCLUSION This work confirmed that cPE exposure triggers impaired mitochondrial metabolism and glycolytic reprogramming in a 3D coculture model of MSCs and macrophages and demonstrated that macrophages cocultured with MSCs undergo metabolic changes to maintain energy production and restore homeostatic metabolism.
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Affiliation(s)
- Victoria Teissier
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA.
- Biomedical Innovations Building, Orthopaedic Research Laboratories 0200, 240 Pasteur Drive, Palo Alto, CA, 94304, USA.
| | - Qi Gao
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Huaishuang Shen
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Jiannan Li
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Xueping Li
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Elijah Ejun Huang
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Junichi Kushioka
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Masakazu Toya
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Masanori Tsubosaka
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Hirohito Hirata
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Hossein Vahid Alizadeh
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Chima V Maduka
- Institute for Quantitative Health Science and Engineering, Departments of Biomedical Engineering and Microbiology and Molecular Genetics, Michigan State University, Michigan, USA
| | - Christopher H Contag
- Institute for Quantitative Health Science and Engineering, Departments of Biomedical Engineering and Microbiology and Molecular Genetics, Michigan State University, Michigan, USA
| | - Yunzhi Peter Yang
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Material Science and Engineering, Stanford University School of Medicine, Stanford, CA, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Ning Zhang
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Stuart B Goodman
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Bioengineering, Stanford University, Stanford, CA, USA.
- , Redwood City, USA.
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18
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Yuan Y, Zu M, Li R, Zuo J, Tao J. Soil properties, microbial diversity, and changes in the functionality of saline-alkali soil are driven by microplastics. J Hazard Mater 2023; 446:130712. [PMID: 36621296 DOI: 10.1016/j.jhazmat.2022.130712] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/22/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
With the intensification of microplastic (MP) pollution, the impact of MPs on soil ecosystems has garnered considerable attention. We investigated the effects of two commonly used MPs, polyethylene (PE) and polypropylene (PP), at different sizes and doses, on the properties and microbial communities in saline-alkali soil. We found that MP treatment significantly reduced the electrical conductivity but somewhat enhanced the enzyme activities and effective nutrient content of the soil. Microbial diversity is affected by the type, dose, size and interaction of MPs, with fungi being more sensitive than bacteria. Under high-dose PE treatment, the dominant bacteria and fungi enriched, and the diversity indexes declined significantly. Meanwhile, under high-dose PP treatment, several unique bacteria and fungi with low abundance were observed, which eventually increased the diversity indexes. Moreover, PE exerted a stronger effect on bacterial function than PP. High-dose PE treatment suppressed the nitrogen fixation potential of soil bacteria. However, high-dose PP treatment promoted that. In conclusion, our findings showed that PE exerts a stronger negative effect on saline-alkali soil ecosystems than PP. Our findings help bridge the knowledge gap in the impact of MPs on saline-alkaline soils and provide guidance for the rational use of agricultural plastics in saline-alkaline soils.
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Affiliation(s)
- Yingdan Yuan
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China
| | - Mengting Zu
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China
| | - Runze Li
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China
| | - Jiajia Zuo
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China
| | - Jun Tao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China.
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19
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Provenza F, Pastorino P, Anselmi S, Persiano ML, Scirocco T, De Rinaldis G, Fossi MC, Panti C, Renzi M, Specchiulli A. Chemical pollution and ecotoxicological effects of high-density polyethylene microplastics in Mytilus galloprovincialis from two Italian lagoon ecosystems. Environ Toxicol Pharmacol 2023; 98:104075. [PMID: 36736514 DOI: 10.1016/j.etap.2023.104075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Transitional water ecosystems have low water exchanges and can trap chemicals and microplastics (MPs). In this study, MPs, trace elements, polycyclic aromatic hydrocarbon-PHAs levels and the oxidative stress response were assessed in Mytilus galloprovincialis from two Italian lagoon ecosystems (Orbetello and Varano). In addition, the ecotoxicological effects induced by the exposure of M. galloprovincialis to high-density polyethylene-HDPE MPs were also determined. Levels of trace elements were almost always comparable among the sites, whereas MPs were found only in mussels from Orbetello. PAHs were always under the limit of quantification. Glutathione peroxidase and malondialdehyde levels were significantly higher in mussels from Varano. As regard the exposure test, it was found a significant effect of treatment, site and their interaction on mortality and biochemical biomarkers in both fed and unfed mussels. However, principal component analysis suggests similar effects of both color and nourishment condition on biochemical biomarkers. These findings warrant further investigation.
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Affiliation(s)
- Francesca Provenza
- Department of Life Science, University of Trieste, 34127 Trieste, Italy; Bioscience Research Center, 58015 Orbetello (GR), Italy
| | - Paolo Pastorino
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, 10154 Torino, Italy.
| | | | - Marco Leporatti Persiano
- Supporto tecnico-scientifico direttore dell'esecuzione sistema di gestione 2022 della laguna di Orbetello, 58015 Orbetello (GR), Italy
| | - Tommaso Scirocco
- National Research Council - Institute for Biological Resources and Marine Biotechnologies (IRBIM), 71010 Lesina, Italy
| | | | - Maria Cristina Fossi
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy
| | - Cristina Panti
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy
| | - Monia Renzi
- Department of Life Science, University of Trieste, 34127 Trieste, Italy; National Research Council - Institute for Biological Resources and Marine Biotechnologies (IRBIM), 71010 Lesina, Italy
| | - Antonietta Specchiulli
- National Research Council - Institute for Biological Resources and Marine Biotechnologies (IRBIM), 71010 Lesina, Italy
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20
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Ju H, Yang X, Osman R, Geissen V. Effects of microplastics and chlorpyrifos on earthworms (Lumbricus terrestris) and their biogenic transport in sandy soil. Environ Pollut 2023; 316:120483. [PMID: 36306883 DOI: 10.1016/j.envpol.2022.120483] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Although microplastics (MPs) are ubiquitous in agricultural soil, little is known about the effects of MPs combined with pesticides on soil organisms and their biogenic transport through the soil profile. In this study, we conducted mesocosm experiments to observe the effects of microplastics (polyethylene (LDPE-MPs) and biodegradable microplastics (Bio-MPs)) and chlorpyrifos (CPF) on earthworm (Lumbricus terrestris) mortality, growth and reproduction, as well as the biogenic transport of these contaminants through earthworm burrows. The results showed that earthworm reproduction was not affected by any treatment, but earthworm weight was reduced by 17.6% and the mortality increased by 62.5% in treatments with 28% Bio-MPs. Treatments with 28% LDPE-MPs and 7% Bio-MPs combined with CPF showed greater toxicity while the treatment with 28% Bio-MPs combined with CPF showed less toxicity on earthworm growth as compared to treatments with only MPs. The treatments with 1250 g ha-1 CPF and 28% Bio-MPs significantly decreased the bioaccumulation of CPF in earthworm bodies (1.1 ± 0.2%, w w-1), compared to the treatment with CPF alone (1.7 ± 0.4%). With CPF addition, more LDPE-MPs (8%) were transported into earthworm burrows and the distribution rate of LDPE-MPs in deeper soil was increased. No effect was observed on the transport of Bio-MPs. More CPF was transported into soil in the treatments with LDPE-MPs and Bio-MPs, 5% and 10% of added CPF, respectively. In addition, a lower level of the CPF metabolite 3,5,6-trichloropyridinol was detected in soil samples from the treatments with MPs additions than without MP additions, indicating that the presence of MPs inhibited CPF degradation. In conclusion, Bio-MPs caused significant toxicity effects on earthworms and the different types of MPs combined with CPF affected earthworms differently, and their transport along the soil profile. Thus, further research is urgently needed to understand the environmental risks of MPs and MP-associated compounds in the soil ecosystem.
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Affiliation(s)
- Hui Ju
- Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands
| | - Xiaomei Yang
- Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands; College of Natural Resources and Environment, Northwest A&F University, 712100, Yangling, China.
| | - Rima Osman
- Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands
| | - Violette Geissen
- Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands
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21
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Yu H, Shi L, Fan P, Xi B, Tan W. Effects of conventional versus biodegradable microplastic exposure on oxidative stress and gut microorganisms in earthworms: A comparison with two different soils. Chemosphere 2022; 307:135940. [PMID: 35963381 DOI: 10.1016/j.chemosphere.2022.135940] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 07/22/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
The ecotoxicity of microplastics (MPs) to soil animals is widely recognized; however, most studies have only focused on conventional MPs. This study compared the effects of various concentrations (0.5%, 1%, 2%, 5%, 7%, and 14%, w/w) of polyethylene (PE) and biodegradable polylactic acid (PLA) MPs on oxidative stress and gut microbes in Eisenia fetida (E. fetida) from two different soils (black and yellow soils). The results indicated that the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione S-transferase (GST), and acetylcholinesterase (AchE) decreased after exposure to PE and PLA MPs for 14 days, whereas malondialdehyde (MDA) levels increased. This level of decrease or increase exhibited a "decrease-increase" trend with increasing MP exposure doses. After 28 days, the activities of SOD, CAT, POD, AchE, and GST increased, whereas MDA levels decreased, and the level of increase or decrease increased with increasing MP dose. The integrated biological response index revealed that the toxic effects of MPs were concentration-dependent, and MP concentration was more important than MP type or soil type. The toxicity of PE MPs was generally higher than that of PLA MPs on day 14, with no significant difference on day 28. Moreover, MPs did not alter the dominant gut microbiota of E. fetida, but altered the relative abundances of Actinobacteriota, Bacteroidota, Ascomycota, and Rozellomycota. Furthermore, different gut microbial phyla exhibited discrepant responses to MPs. Our results demonstrated that both conventional and biodegradable MPs induced oxidative stress in E. fetida, and biodegradable MPs showed no less toxicity compared to conventional MPs. Additionally, MP-induced toxic effects did not differ significantly between black and yellow soils, suggesting that MP-induced toxic effects were less affected by soil type.
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Affiliation(s)
- Hong Yu
- State Key Laboratory of Environmental Criteria and Risk Assessment, And State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Lingling Shi
- State Key Laboratory of Environmental Criteria and Risk Assessment, And State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Ping Fan
- College of Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Beidou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, And State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, China.
| | - Wenbing Tan
- State Key Laboratory of Environmental Criteria and Risk Assessment, And State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
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22
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Jasińska A, Różalska S, Rusetskaya V, Słaba M, Bernat P. Microplastic-Induced Oxidative Stress in Metolachlor-Degrading Filamentous Fungus Trichoderma harzianum. Int J Mol Sci 2022; 23:12978. [PMID: 36361770 PMCID: PMC9658726 DOI: 10.3390/ijms232112978] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/18/2022] [Accepted: 10/23/2022] [Indexed: 09/07/2023] Open
Abstract
While there has been intensive research on the influence of microplastics (MPs) on aquatic organisms and humans, their effect on microorganisms is relatively little-known. The present study describes the response of the Trichoderma harzianum strain to low-density polyethylene (LDPE) microparticles. MPs, either separately or with metolachlor (MET), were added to the cultures. Initially, MP was not found to have a negative effect on fungal growth and MET degradation. After 72 h of cultivation, the content of fungal biomass in samples with MPs was almost three times higher than that in the cultures without MPs. Additionally, a 75% degradation of the initial MET was observed. However, due to the qualitative and quantitative changes in individual classes of phospholipids, cell membrane permeability was increased. Additionally, MPs induced the overproduction of reactive oxygen species. The activity of superoxide dismutase and catalase was also increased in response to MPs. Despite these defense mechanisms, there was enhanced lipid peroxidation in the cultures containing the LDPE microparticles. The results of the study may fill the knowledge gap on the influence of MPs on filamentous fungi. The findings will be helpful in future research on the biodegradation of contaminants coexisting with MPs in soil.
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Affiliation(s)
| | | | | | | | - Przemysław Bernat
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
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23
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Dusza HM, Katrukha EA, Nijmeijer SM, Akhmanova A, Vethaak AD, Walker DI, Legler J. Uptake, Transport, and Toxicity of Pristine and Weathered Micro- and Nanoplastics in Human Placenta Cells. Environ Health Perspect 2022; 130:97006. [PMID: 36129437 PMCID: PMC9491364 DOI: 10.1289/ehp10873] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
BACKGROUND The first evidence of micro- and nanoplastic (MNP) exposure in the human placenta is emerging. However, the toxicokinetics and toxicity of MNPs in the placenta, specifically environmentally relevant particles, remain unclear. OBJECTIVES We examined the transport, uptake, and toxicity of pristine and experimentally weathered MNPs in nonsyncytialized and syncytialized BeWo b30 choriocarcinoma cells. METHODS We performed untargeted chemical characterization of pristine and weathered MNPs using liquid chromatography high-resolution mass spectrometry to evaluate compositional differences following particle weathering. We investigated cellular internalization of pristine and weathered polystyrene (PS; 0.05-10μm) and high-density polyethylene (HDPE; 0-80μm) particles using high-resolution confocal imaging and three-dimensional rendering. We investigated the influence of particle coating with human plasma on the cellular transport of PS particles using a transwell setup and examined the influence of acute MNP exposure on cell viability, damage to the plasma membrane, and expression of genes involved in steroidogenesis. RESULTS Chemical characterization of MNPs showed a significantly higher number of unique features in pristine particles in comparison with weathered particles. Size-dependent placental uptake of pristine and weathered MNPs was observed in both placental cell types after 24 h exposure. Cellular transport was limited and size-dependent and was not influenced by particle coating with human plasma. None of the MNPs affected cell viability. Damage to the plasma membrane was observed only for 0.05μm PS particles in the nonsyncytialized cells at the highest concentration tested (100μg/mL). Modest down-regulation of hsd17b1 was observed in syncytialized cells exposed to pristine MNPs. DISCUSSION Our results suggest that pristine and weathered MNPs are internalized and translocated in placental cells in vitro. Effects on gene expression observed upon pristine PS and HDPE particle exposure warrant further examination. More in-depth investigations are needed to better understand the potential health risks of MNP and chemicals associated with them under environmentally relevant exposure scenarios. https://doi.org/10.1289/EHP10873.
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Affiliation(s)
- Hanna M. Dusza
- Division of Toxicology, Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Eugene A. Katrukha
- Cell Biology, Department of Biology, Faculty of Sciences, Utrecht University, Utrecht, the Netherlands
| | - Sandra M. Nijmeijer
- Division of Toxicology, Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Sciences, Utrecht University, Utrecht, the Netherlands
| | - A. Dick Vethaak
- Deltares, Delft, the Netherlands
- Department of Environment and Health, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Douglas I. Walker
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Juliette Legler
- Division of Toxicology, Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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24
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Yang Y, Li T, Liu P, Li H, Hu F. The formation of specific bacterial communities contributes to the enrichment of antibiotic resistance genes in the soil plastisphere. J Hazard Mater 2022; 436:129247. [PMID: 35739766 DOI: 10.1016/j.jhazmat.2022.129247] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Soil serves as a major reservoir of both antibiotic resistance genes (ARGs) and microplastics. However, the characteristics of the antibiotic resistome in the soil plastisphere remain largely unknown. In this study, we used metagenomic approaches to reveal the changing patterns of ARGs and the bacterial community and their associations in response to three types of microplastics (light density polyethylene, LDPE; polypropylene, PP; polystyrene, PS) using particles 550 µm or 75 µm in diameter. The total ARG abundances significantly increased in the plastisphere and varied across plastic types. The LDPE plastisphere had the highest ARG total abundance and lowest Shannon diversity index, indicating that this plastic had the most severe negative impact on soil bacterial diversity. The PP plastisphere contained higher relative abundances of the pathogenic bacteria Acinetobacter johnsonii and Escherichia coli, demonstrating the higher pathogenic risk of the microbial communities enriched in the plastisphere. Specifically, multidrug resistance genes (ceoB and MuxB) co-existed with more than four microbial taxa, increasing the potential risk of ARG spread in pathogenic bacteria. These findings implied that the plastisphere acts as a hotspot for acquiring and spreading antibiotic resistance and may have long-term negative effects on the soil ecosystem and human health.
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Affiliation(s)
- Yang Yang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Teng Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Peng Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Huixin Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Feng Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
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25
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Kiki C, Qiu Y, Wang Q, Ifon BE, Qin D, Chabi K, Yu CP, Zhu YG, Sun Q. Induced aging, structural change, and adsorption behavior modifications of microplastics by microalgae. Environ Int 2022; 166:107382. [PMID: 35803076 DOI: 10.1016/j.envint.2022.107382] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/05/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
The effects of microalgal biofouling on microplastic (MP) may differ from bacterial biofouling. In this study, the influence of microalgae on MP surface alteration, structural change, and adsorption of organic micropollutants was evaluated. Virgin polyethylene (PE), polyvinyl chloride (PVC), and polyamide (PA) were each immersed in algal photobioreactor and river freshwater for 30 days to simulate algal and river microbe biofouling respectively. Consequently, their physicochemical changes and adsorption potential of a mixture of six bisphenol analogues (BPA, BPS, BPE, BPB, BPF, BPAF) and two parabens (propyl-paraben, benzyl-paraben) were investigated. Owing to the algal bioactive compounds, major microalgae-induced biofouling and more MP aging than the river microbe aging were observed through fractures, pits, cracks, and algal attachments. Intrusion of algal organic matter and scission of polymeric functional groups were revealed during microalgal immersion and the potential MP aging pathways were proposed. Algal biofouling considerably altered the intrinsic properties of the MPs, consequently the adsorption capacity of PE and PVC was enhanced by 3.04-6.72 and 2.14-8.72 times, respectively. Adsorption process onto algal-aged MPs was pH-dependent, endothermic, non-spontaneous, and favored by hydrogen bonds. Meanwhile, the amide group in PA structure was conducive to organic micropollutant adsorption, which was likely reduced by algal aging and the erosion of the N-H stretching. Moreover, higher adsorption capacities of organic micropollutants were shown by the algal-biofilm PE and PVC than virgin and river microbial biofilm MPs. This study discloses that, biofouling and aging of MPs by microalgae through their bioactive components would engender more incidences on MP properties, organic micropollutants adsorption with associated environmental and health hazards.
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Affiliation(s)
- Claude Kiki
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100043, China; National Institute of Water, University of Abomey-Calavi, 01 BP: 526, Cotonou, Benin
| | - Ying Qiu
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Qi Wang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Binessi Edouard Ifon
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100043, China
| | - Dan Qin
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Kassim Chabi
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100043, China
| | - Chang-Ping Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yong-Guan Zhu
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Qian Sun
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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26
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Gao Q, Li Z, Rhee C, Xiang S, Maruyama M, Huang EE, Yao Z, Bunnell BA, Tuan RS, Lin H, Gold MS, Goodman SB. Macrophages Modulate the Function of MSC- and iPSC-Derived Fibroblasts in the Presence of Polyethylene Particles. Int J Mol Sci 2021; 22:12837. [PMID: 34884641 PMCID: PMC8657553 DOI: 10.3390/ijms222312837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/21/2021] [Accepted: 11/24/2021] [Indexed: 01/15/2023] Open
Abstract
Fibroblasts in the synovial membrane secrete molecules essential to forming the extracellular matrix (ECM) and supporting joint homeostasis. While evidence suggests that fibroblasts contribute to the response to joint injury, the outcomes appear to be patient-specific and dependent on interactions between resident immune cells, particularly macrophages (Mφs). On the other hand, the response of Mφs to injury depends on their functional phenotype. The goal of these studies was to further explore these issues in an in vitro 3D microtissue model that simulates a pathophysiological disease-specific microenvironment. Two sources of fibroblasts were used to assess patient-specific influences: mesenchymal stem cell (MSC)- and induced pluripotent stem cell (iPSC)-derived fibroblasts. These were co-cultured with either M1 or M2 Mφs, and the cultures were challenged with polyethylene particles coated with lipopolysaccharide (cPE) to model wear debris generated from total joint arthroplasties. Our results indicated that the fibroblast response to cPE was dependent on the source of the fibroblasts and the presence of M1 or M2 Mφs: the fibroblast response as measured by gene expression changes was amplified by the presence of M2 Mφs. These results demonstrate that the immune system modulates the function of fibroblasts; furthermore, different sources of differentiated fibroblasts may lead to divergent results. Overall, our research suggests that M2 Mφs may be a critical target for the clinical treatment of cPE induced fibrosis.
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Affiliation(s)
- Qi Gao
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
| | - Zhong Li
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; (Z.L.); (S.X.); (R.S.T.); (H.L.)
| | - Claire Rhee
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
| | - Shiqi Xiang
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; (Z.L.); (S.X.); (R.S.T.); (H.L.)
| | - Masahiro Maruyama
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
| | - Elijah Ejun Huang
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
| | - Zhenyu Yao
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
| | - Bruce A. Bunnell
- Department of Microbiology, Immunology and Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA;
| | - Rocky S. Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; (Z.L.); (S.X.); (R.S.T.); (H.L.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Hang Lin
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; (Z.L.); (S.X.); (R.S.T.); (H.L.)
| | - Michael S. Gold
- Department of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA;
| | - Stuart B. Goodman
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA 94304, USA; (Q.G.); (C.R.); (M.M.); (E.E.H.); (Z.Y.)
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Qi Y, Ossowicki A, Yang X, Huerta Lwanga E, Dini-Andreote F, Geissen V, Garbeva P. Effects of plastic mulch film residues on wheat rhizosphere and soil properties. J Hazard Mater 2020; 387:121711. [PMID: 31806445 DOI: 10.1016/j.jhazmat.2019.121711] [Citation(s) in RCA: 202] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 05/09/2023]
Abstract
Plastic residues could accumulate in soils as a consequence of using plastic mulching, which results in a serious environmental concern for agroecosystems. As an alternative, biodegradable plastic films stand as promising products to minimize plastic debris accumulation and reduce soil pollution. However, the effects of residues from traditional and biodegradable plastic films on the soil-plant system are not well studied. In this study, we used a controlled pot experiment to investigate the effects of macro- and micro- sized residues of low-density polyethylene and biodegradable plastic mulch films on the rhizosphere bacterial communities, rhizosphere volatile profiles and soil chemical properties. Interestingly, we identified significant effects of biodegradable plastic residues on the rhizosphere bacterial communities and on the blend of volatiles emitted in the rhizosphere. For example, in treatments with biodegradable plastics, bacteria genera like Bacillus and Variovorax were present in higher relative abundances and volatile compounds like dodecanal were exclusively produced in treatment with biodegradable microplastics. Furthermore, significant differences in soil pH, electrical conductivity and C:N ratio were observed across treatments. Our study provides evidence for both biotic and abiotic impacts of plastic residues on the soil-plant system, suggesting the urgent need for more research examining their environmental impacts on agroecosystems.
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Affiliation(s)
- Yueling Qi
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700AA Wageningen, the Netherlands; Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, the Netherlands.
| | - Adam Ossowicki
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, the Netherlands
| | - Xiaomei Yang
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700AA Wageningen, the Netherlands; College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, China
| | - Esperanza Huerta Lwanga
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700AA Wageningen, the Netherlands; Agroecología, El Colegio de la Frontera Sur, Unidad Campeche, Campeche, Mexico
| | - Francisco Dini-Andreote
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, the Netherlands; Department of Plant Science, The Pennsylvania State University, University Park, PA, USA; Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Violette Geissen
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700AA Wageningen, the Netherlands
| | - Paolina Garbeva
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, the Netherlands
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Yoo RN, Kim HJ, Lee JI, Kang WK, Kye BH, Kim CW, Bae SU, Nam S, Kang BM. Circular pOlyethylene drape in preVEntion of suRgical site infection (COVER trial): study protocol for a randomised controlled trial. BMJ Open 2020; 10:e034687. [PMID: 31974091 PMCID: PMC7044988 DOI: 10.1136/bmjopen-2019-034687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Surgical site infection (SSI) after abdominal surgery remains a significant cause of morbidity and is associated with an increased socioeconomic burden and a reduced quality of life. Circular wound protectors have been expected to reduce the risk of SSI, but previous studies reported conflicting results on their protective effects. The purpose of this study was to evaluate the efficacy of circular wound protectors in reducing SSI in open abdominal surgery. METHODS AND ANALYSIS The circular pOlyethylen drape in preVEntion of suRgical site infection (COVER) trial investigates whether the application of a dual-ring circular plastic wound protector reduces the rate of SSI in patients undergoing elective or emergent open abdominal surgery related to the gastrointestinal tract, regardless of the type of wound classified by the Centers for Disease Control. The COVER trial is a multicentre, randomised controlled clinical trial with two parallel arms-one using a dual-ring wound protector with circular polyethylene drape and the other using conventional surgical dressing gauze. The primary outcome will measure the rate of SSI within 30 days after surgery in two groups. Statistical analysis of the primary end point will be based on the intention-to-treat population. The sample size was determined to achieve a study power of 80% with 95% two-sided confidence limits. Considering a dropout rate of up to 5%, a total of 458 patients, 229 patients in each group, will be enrolled in this study. ETHICS AND DISSEMINATION The trial protocol and informed consent document have been reviewed and approved by the institutional review board at each participating centre. Written informed consent will be obtained from each study participant. The clinical outcomes of this trial will be submitted to an international peer-reviewed journal and presented at international conferences. TRIAL REGISTRATION NUMBER NCT03170843.
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Affiliation(s)
- Ri Na Yoo
- Surgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, The Republic of Korea
| | - Hyung Jin Kim
- Surgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, The Republic of Korea
| | - Jae Im Lee
- Surgery, Uijeongbu St. Mary's Hospital. The Catholic University of Korea, Uijeongbu, The Republic of Korea
| | - Won-Kyung Kang
- Surgery, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, The Republic of Korea
| | - Bong-Hyeon Kye
- Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, The Republic of Korea
| | - Chang Woo Kim
- Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, The Republic of Korea
| | - Sung Uk Bae
- Surgery, School of Medicine, Keimyung University and Dongsan Medical Center, Daegu, The Republic of Korea
| | - Soomin Nam
- Surgery, National Health Insurance Service Ilsan Hospital, Goyang, The Republic of Korea
| | - Byung Mo Kang
- Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, The Republic of Korea
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Nifant’ev I, Bukharova T, Dyakonov A, Goldshtein D, Galitsyna E, Kosarev M, Shlyakhtin A, Gavrilov D, Ivchenko P. Osteogenic Differentiation of Human Adipose Tissue-Derived MSCs by Non-Toxic Calcium Poly(ethylene phosphate)s. Int J Mol Sci 2019; 20:E6242. [PMID: 31835689 PMCID: PMC6940807 DOI: 10.3390/ijms20246242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/27/2019] [Accepted: 12/08/2019] [Indexed: 12/14/2022] Open
Abstract
There is a current clinical need for the development of bone void fillers and bioactive bone graft substitutes. The use of mesenchymal stem cells (MSCs) that are seeded into 3D scaffolds and induce bone generation in the event of MSCs osteogenic differentiation is highly promising. Since calcium ions and phosphates promote the osteogenic differentiation of MSCs, the use of the calcium complexes of phosphate-containing polymers is highly prospective in the development of osteogenic scaffolds. Calcium poly(ethylene phosphate)s (PEP-Ca) appear to be potentially suitable candidates primarily because of PEP's biodegradability. In a series of experiments with human adipose-tissue-derived multipotent mesenchymal stem cells (ADSCs), we demonstrated that PEP-Ca are non-toxic and give rise to osteogenesis gene marker, bone morphogenetic protein 2 (BMP-2) and mineralization of the intercellular matrix. Owing to the synthetic availability of poly(ethylene phosphoric acid) block copolymers, these results hold out the possibility for the development of promising new polymer composites for orthopaedic and maxillofacial surgery.
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Affiliation(s)
- Ilya Nifant’ev
- Chemistry Department, M.V. Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia; (M.K.); (A.S.); (D.G.); (P.I.)
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
| | - Tatiana Bukharova
- Research Centre for Medical Genetics, 1 Moskvorechye Str., 115522 Moscow, Russia; (T.B.); (A.D.); (D.G.); (E.G.)
| | - Alexander Dyakonov
- Research Centre for Medical Genetics, 1 Moskvorechye Str., 115522 Moscow, Russia; (T.B.); (A.D.); (D.G.); (E.G.)
| | - Dmitry Goldshtein
- Research Centre for Medical Genetics, 1 Moskvorechye Str., 115522 Moscow, Russia; (T.B.); (A.D.); (D.G.); (E.G.)
| | - Elena Galitsyna
- Research Centre for Medical Genetics, 1 Moskvorechye Str., 115522 Moscow, Russia; (T.B.); (A.D.); (D.G.); (E.G.)
| | - Maxim Kosarev
- Chemistry Department, M.V. Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia; (M.K.); (A.S.); (D.G.); (P.I.)
| | - Andrey Shlyakhtin
- Chemistry Department, M.V. Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia; (M.K.); (A.S.); (D.G.); (P.I.)
| | - Dmitry Gavrilov
- Chemistry Department, M.V. Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia; (M.K.); (A.S.); (D.G.); (P.I.)
| | - Pavel Ivchenko
- Chemistry Department, M.V. Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia; (M.K.); (A.S.); (D.G.); (P.I.)
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
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Huang Y, Zhao Y, Wang J, Zhang M, Jia W, Qin X. LDPE microplastic films alter microbial community composition and enzymatic activities in soil. Environ Pollut 2019; 254:112983. [PMID: 31394342 DOI: 10.1016/j.envpol.2019.112983] [Citation(s) in RCA: 239] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/12/2019] [Accepted: 07/29/2019] [Indexed: 05/07/2023]
Abstract
Concerns regarding microplastic contamination have spread from aquatic environments to terrestrial systems with a growing number of studies have been reported. Notwithstanding, the potential effects on soil ecosystems remain largely unexplored. In this study, the effects of polyethylene microplastics on soil enzymatic activities and the bacterial community were evaluated, and the microbiota colonizing on microplastics were also investigated. Microplastic amendment (2000 fragments per kg soil) significantly increased the urease and catalase activities in soil after 15 days, and no discernible alteration of invertase activities was detected. Results from high-throughput sequencing of 16S rRNA revealed that the alpha diversities (richness, evenness, and diversity) of the microbiota in soil were not obviously changed by the PE amendment, whereas the diversity indexes of microbiota on plastic fragments were significantly lower than those in the control and amended soils. Different taxonomic composition was observed in between the control and amended soils after 90 days of incubation. Bacterial assemblages with distinct community structure colonized the PE microplastics. Additionally, several taxa including plastic-degrading bacteria and pathogens were more abundant on microplastics. Simultaneously, the predicted functional profiles showed that the pathways of amino acid metabolism and xenobiotics biodegradation and metabolism were higher on the microplastics. These results indicated that microplastics in soil, compared with those in aquatic environments, can also act as a distinct microbial habitat, potentially altering the ecological functions of soil ecosystems.
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Affiliation(s)
- Yi Huang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Yanran Zhao
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jie Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
| | - Mengjun Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Weiqian Jia
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Xiao Qin
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
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Scuri S, Petrelli F, Grappasonni I, Idemudia L, Marchetti F, Di Nicola C. Evaluation of the antimicrobial activity of novel composite plastics containing two silver (I) additives, acyl pyrazolonate and acyl pyrazolone. Acta Biomed 2019; 90:370-377. [PMID: 31580329 PMCID: PMC7233731 DOI: 10.23750/abm.v90i3.8561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 07/31/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Public health systems today face the dual challenges of controlling infections and curbing the increase in antimicrobial resistance manifested in drug-resistant microorganisms in hospitals and elsewhere. In the last ten years, research has been conducted to develop new materials with antimicrobial properties to be used in medical devices, increasingly found to harbour critical nosocomial infections. METHODS Two next-generation composites using the antimicrobial qualities of silver were tested against Escherichia coli, Staphylococcus aureus and Candida albicans with the purpose of evaluating their antimicrobial and antifungal activity. These tests applied the standardized method according to ISO-2216: Plastics-Measurement of Antibacterial Activity on Plastics Surfaces. Testing was carried out using polyethylene (PE) enriched with AgNO3 as a positive control and PE as a negative control. RESULTS The antimicrobial activity of the composites proved to be between medium (bacteriostatic) and very good (bactericidal). In particular, PE2 showed the highest scores against all microorganisms, with values ranging from good to very good. Instead, PE1 had lower scores, with a value of medium for Escherichia coli and slight for Candida albicans. Statistical analysis carried out with the t-test for unpaired data showed a statistically significant difference between the positive control and the other polymers (p< .0001). CONCLUSIONS Based on our findings, we conclude that the test, conducted to ISO-2216 standards, could be extended to include fungal strains and that the new composites could be used to produce antimicrobial surfaces for medical devices, for example, intubation tubes, urinary catheters, vascular prostheses, and mechanical heart valves. This would reduce the risk of microbial contamination and biofilm formation, ensuring better health outcomes for patients treated with these devices. Further testing should be done to evaluate potential future applications of these composites and the possibility of adding fungal strains to the IS0-2216 standard.
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Syakti AD, Jaya JV, Rahman A, Hidayati NV, Raza'i TS, Idris F, Trenggono M, Doumenq P, Chou LM. Bleaching and necrosis of staghorn coral (Acropora formosa) in laboratory assays: Immediate impact of LDPE microplastics. Chemosphere 2019; 228:528-535. [PMID: 31051356 DOI: 10.1016/j.chemosphere.2019.04.156] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/16/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
The impact of low-density polyethylene (LDPE) microplastics (<100 μm; P100-A P100-B, P100-C, 100-200 μm; P200, 200-500 μm; P500) on Acropora formosa was investigated. This study investigated the bleaching and necrosis extent of A. formosa caused by LDPE contamination via laboratory assay. The staghorn coral ingested the microplastics, resulting in bleaching and necrosis that concomitantly occurred with the release of zooxanthellae. P100-A experimentation was the worst case, showing bleaching by day 2 (10.8 ± 2.2%) and continued bleaching to 93.6% ± 2.0 by day 14 followed by 5.9 ± 2.5% necrosis. The overall results confirmed that the LDPE concentration impacts coral health. We highlighted that microplastics have been ingested and partially egested. Their presence showed either a direct or indirect impact on coral polyps via direct interaction or through photosynthesis perturbation due to microplastics that cover the coral surface.
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Affiliation(s)
- Agung Dhamar Syakti
- Center for Maritime Biosciences Studies - Institute for Sciences and Community Service, Jenderal Soedirman University, Kampus Karangwangkal, Jl. Dr. Suparno, Purwokerto, 53123, Indonesia; Marine Science and Fisheries Faculty - Raja Ali Haji Maritime University, Jl. Politeknik Senggarang-Tanjung pinang, Riau Islands Province, 29100, Indonesia.
| | - Jales Veva Jaya
- Marine Science and Fisheries Faculty - Raja Ali Haji Maritime University, Jl. Politeknik Senggarang-Tanjung pinang, Riau Islands Province, 29100, Indonesia
| | - Aulia Rahman
- Marine and Fisheries Agency - Riau Islands Province Dompak, Bukit Bestari, Tanjung pinang, Riau Islands, Indonesia
| | - Nuning Vita Hidayati
- Fisheries and Marine Science Faculty - Jenderal Soedirman University, Kampus Karangwangkal, Jl. Dr. Suparno, Purwokerto, 53123, Indonesia
| | - Tengku Said Raza'i
- Marine Science and Fisheries Faculty - Raja Ali Haji Maritime University, Jl. Politeknik Senggarang-Tanjung pinang, Riau Islands Province, 29100, Indonesia
| | - Fadliyah Idris
- Marine Science and Fisheries Faculty - Raja Ali Haji Maritime University, Jl. Politeknik Senggarang-Tanjung pinang, Riau Islands Province, 29100, Indonesia
| | - Mukti Trenggono
- Fisheries and Marine Science Faculty - Jenderal Soedirman University, Kampus Karangwangkal, Jl. Dr. Suparno, Purwokerto, 53123, Indonesia
| | - Pierre Doumenq
- Aix Marseille Université, CNRS, LCE, UMR 7376, 13545, Aix-en-Provence, Cedex 4, France
| | - Loke Ming Chou
- Tropical Marine Science Institute, National University of Singapore, 5 Kent Ridge Road, Singapore, 119214, Republic of Singapore
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Hundáková M, Valášková M, Pazdziora E, Kimmer D. Polyethylene/Organo-Inorgano Vermiculites and Their Antimicrobial Properties. J Nanosci Nanotechnol 2019; 19:2599-2605. [PMID: 30501756 DOI: 10.1166/jnn.2019.15852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Clay mineral vermiculite was treated with silver and copper nitrate solutions and samples were subsequently modified with organic compound (dodecylamine) via solid-solid melt intercalation. Prepared organo-inorgano vermiculites were used as nanofillers to the polyethylene matrix. Mixtures of polyethylene with vermiculite nanofillers, prepared by melt compounding technique, were pressed into thin plates. Structure changes of prepared powder vermiculite nanofillers and polyethylene/vermiculite composites were studied by X-ray diffraction analysis. The X-ray diffraction patterns of vermiculite nanofillers confirm intercalation of dodecylamine into the vermiculite interlayer. Antimicrobial properties of powder vermiculite nanofillers were evaluated by the minimum inhibitory concentration of samples which is needed to completely stop the bacterial growth and polyethylene/vermiculite composites were evaluated by the number of colony forming units survived on surfaces of composite plates. Different bacterial strains were studied: (1) Gram-positive, represented by bacteria Staphylococcus aureus and Enterococcus faecalis, (2) Gram-negative, represented by bacteria Escherichia coli and Pseudomonas aeruginosa, and (3) yeast, Candida albicans. Powder vermiculite nanofillers and surfaces of polyethylene/vermiculite composites showed good antimicrobial effect against tested bacteria and yeast. Powder vermiculite nanofillers show antimicrobial effect already after 30 minutes of tested time. Composite plates exhibited decrease of colony forming units number about 5-7 logarithmic orders depending on bacteria after 24 hours of tested time.
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Affiliation(s)
- Marianna Hundáková
- Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
| | - Marta Valášková
- Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic
| | - Erich Pazdziora
- National Reference Laboratory, Institute of Public Health in Ostrava, Partyzánské náměestí 7, 702 00 Ostrava, Czech Republic
| | - Dušan Kimmer
- SPUR a.s., těr. T. Bati 299, 764 22 Zlín, Czech Republic
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Hessenauer MET, Lauber K, Zuchtriegel G, Uhl B, Hussain T, Canis M, Strieth S, Berghaus A, Reichel CA. Vitronectin promotes the vascularization of porous polyethylene biomaterials. Acta Biomater 2018; 82:24-33. [PMID: 30296618 DOI: 10.1016/j.actbio.2018.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 09/29/2018] [Accepted: 10/04/2018] [Indexed: 01/22/2023]
Abstract
Rapid implant vascularization is a prerequisite for successful biomaterial engraftment. Vitronectin (VN) is a matricellular glycoprotein well known for its capability to interact with growth factors, proteases, and protease inhibitors/receptors. Since such proteins are highly relevant for angiogenic processes, we hypothesized that VN contributes to the tissue integration of biomaterials. Employing different in vivo and ex vivo microscopy techniques, engraftment of porous polyethylene (PPE) implants was analyzed in the dorsal skinfold chamber model in wild-type (WT) and VN-/- mice. Upon PPE implantation, vascularization of this biomaterial was severely compromised in animals lacking this matricellular protein. Proteome profiling revealed that VN deficiency does not cause major changes in angiogenic protein composition in the implants suggesting that VN promotes PPE vascularization via mechanisms modulating the activity of angiogenic factors rather than by directly enriching them in the implant. Consequently, surface coating with recombinant VN (embedded in Matrigel®) accelerated implant vascularization in WT mice by enhancing the maturation of a vascular network. Thus, VN contributes to the engraftment of PPE implants by promoting the vascularization of this biomaterial. Surface coating with VN might provide a promising strategy to improve the vascularization of PPE implants without affecting the host's integrity. STATEMENT OF SIGNIFICANCE: Porous polyethylene (PPE) is a biomaterial frequently used in reconstructive surgery. The proper vascularization of PPE implants is a fundamental prerequisite for its successful engraftment in host tissue. Although the overall biocompatibility of PPE is good, there are less favorable application sites for its use in tissue reconstruction mostly characterized by low blood supply. Employing advanced in vivo microscopy methods and proteomic analyses in genetically engineered mice, we here describe a previously unrecognized function of vitronectin (VN) that enables this abundantly present glycoprotein to particularly promote the vascularization of PPE biomaterial. These properties of VN specifically facilitate the formation of a dense vessel network within the implant which relies on modulating the activity of angiogenic mediators rather than on the enrichment of these factors in the implant. Consequently, surface coating with this matricellular protein effectively accelerated and intensified implant vascularization which might be beneficial for its implementation at unfavorable sites for implantation without affecting the host's integrity.
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Affiliation(s)
- Maximilian E T Hessenauer
- Department of Plastic and Reconstructive Surgery, Friedrich-Alexander-Universität Erlangen, Erlangen, Germany; Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Kirsten Lauber
- Department of Radiotherapy and Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Gabriele Zuchtriegel
- Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bernd Uhl
- Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Timon Hussain
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; Department of Otorhinolaryngology, University of Essen, Essen, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Sebastian Strieth
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center of Mainz, Mainz, Germany
| | - Alexander Berghaus
- Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Christoph A Reichel
- Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
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Au JK, Palma Diaz MF, Aghaloo T, St John MA. Scaffold-Assisted Artificial Hair Implantation in a Rat Model. JAMA FACIAL PLAST SU 2018; 20:230-237. [PMID: 29285533 PMCID: PMC6145790 DOI: 10.1001/jamafacial.2017.2186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/08/2017] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Current treatments for alopecia with autograft hair transplantation face limitations that may preclude complete hair restoration and leave patients with donor site scars. Scaffold assisted artificial hair implantation as demonstrated in a rat model may provide an adjunct for hair restoration without donor site morbidity. OBJECTIVE To design and create porous high-density polyethylene (PHDPE) and expanded polytetrafluoroethylene (ePTFE) hair-bearing scaffolds and evaluate their biocompatibility in a rat model. DESIGN, SETTING, AND PARTICIPANTS For this single-institution randomized prospective animal study, 34 Sprague Dawley rats were randomly selected into 2 groups: 24 rats for direct implantation and 10 rats for delayed implantation. The direct-implantation group was randomly divided into 3 subgroups of 8 rats, which were observed for 2, 12, and 24 week. INTERVENTIONS Each rat dorsum was implanted with 4 scaffolds-PHDPE and ePTFE with and without hair-in a randomized 4-quadrant manner. The rats in the direct-implantation group were observed to their selected time points of 2, 12, and 24 weeks. The rats in the delayed-implantation group were observed for 4 weeks at which, all well-healed scaffolds without hair were then percutaneously implanted with 2 follicular units of hair. These rats were then observed for another 4 weeks. MAIN OUTCOMES AND MEASURES During the clinical observation period, scaffolds were observed for signs of infection, extrusion, and persistence of follicular units. Following sacrifice, sagittal sections of scaffold and surrounding skin were fixed in formalin, stained with hematoxylin-eosin, and evaluated for degree of fibrovascular invasion and acute and chronic inflammation. RESULTS Overall 94.5% (86 of 91) of the scaffolds were well healed at time of evaluation (2 week, 100% [32 of 32]; 12 week, 96.3% [26 of 27]; 24 week, 87.5% [28 of 32]); while 85.6% of artificial hair follicular units were intact at time of evaluation (2 week, 93.8% [30 of 32]; 12 week, 86.7% [26 of 30]; 24 week, 75.0% [21 of 28]). Within the delayed implant group 100% (19 of 19) of the hair-implanted scaffolds were well healed at 8 weeks, with 94.7% (36 of 38) of the follicular units intact; 100% of the delayed-hair implant scaffolds were well healed with 86.1% (36 of 38) of the follicular units intact. Kaplan-Meier log-rank analysis showed no significant difference in survival between ePTFE and PHDPE scaffolds, as well as scaffolds with hair and scaffolds without hair. Upon histological analysis, overall scaffolds with hair were noted to have greater chronic inflammation (95% CI, -0.81 to -1.10; P = .01), and PHDPE was noted to have significantly great fibrovascular integration (95% CI, -11.42 to -1.96; P = .01) compared with ePTFE. CONCLUSIONS AND RELEVANCE Overall, PHDPE and ePTFE hair bearing scaffolds were well tolerated in a rat model. Progressive loss of artificial hair may be percutaneously implanted without significant increases in infection or extrusion. LEVEL OF EVIDENCE NA.
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Affiliation(s)
- Joshua K Au
- Department of Head and Neck Surgery, UCLA Medical Center, Los Angeles, California
| | - Miguel Fernando Palma Diaz
- Department of Pathology and Laboratory Medicine, UCLA Medical Center, Los Angeles, California
- UCLA Head and Neck Cancer Program, UCLA David Geffen School of Medicine, Los Angeles, California
- Jonsson Comprehensive Cancer Center, UCLA David Geffen School of Medicine, Los Angeles, California
| | - Tara Aghaloo
- Section of Oral & Maxillofacial Surgery, UCLA School of Dentistry, Los Angeles, California
| | - Maie A St John
- Department of Head and Neck Surgery, UCLA Medical Center, Los Angeles, California
- UCLA Head and Neck Cancer Program, UCLA David Geffen School of Medicine, Los Angeles, California
- Jonsson Comprehensive Cancer Center, UCLA David Geffen School of Medicine, Los Angeles, California
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Hüwe C, Schmeichel J, Brodkorb F, Dohlen S, Kalbfleisch K, Kreyenschmidt M, Lorenz R, Kreyenschmidt J. Potential of antimicrobial treatment of linear low-density polyethylene with poly((tert-butyl-amino)-methyl-styrene) to reduce biofilm formation in the food industry. Biofouling 2018; 34:378-387. [PMID: 29663827 DOI: 10.1080/08927014.2018.1453926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
Antimicrobial surfaces are one approach to prevent biofilms in the food industry. The aim of this study was to investigate the effect of poly((tert-butyl-amino)-methyl-styrene) (poly(TBAMS)) incorporated into linear low-density polyethylene (LLDPE) on the formation of mono- and mixed-species biofilms. The biofilm on untreated and treated LLDPE was determined after 48 and 168 h. The comparison of the results indicated that the ability of Listeria monocytogenes to form biofilms was completely suppressed by poly(TBAMS) (Δ168 h 3.2 log10 cfu cm-2) and colonization of Staphylococcus aureus and Escherichia coli was significantly delayed, but no effect on Pseudomonas fluorescens was observed. The results of dual-species biofilms showed complex interactions between the microorganisms, but comparable effects on the individual bacteria by poly(TBAMS) were identified. Antimicrobial treatment with poly(TBAMS) shows great potential to prevent biofilms on polymeric surfaces. However, a further development of the material is necessary to reduce the colonization of strong biofilm formers.
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Affiliation(s)
- Carina Hüwe
- a Faculty of Agriculture, Institute of Nutritional and Food Sciences, Food Processing Engineering , University of Bonn , Bonn , Germany
| | - Jennifer Schmeichel
- a Faculty of Agriculture, Institute of Nutritional and Food Sciences, Food Processing Engineering , University of Bonn , Bonn , Germany
| | - Florian Brodkorb
- b Department of Chemical Engineering , University of Applied Sciences Münster , Steinfurt , Germany
| | - Sophia Dohlen
- a Faculty of Agriculture, Institute of Nutritional and Food Sciences, Food Processing Engineering , University of Bonn , Bonn , Germany
| | - Katrin Kalbfleisch
- b Department of Chemical Engineering , University of Applied Sciences Münster , Steinfurt , Germany
| | - Martin Kreyenschmidt
- b Department of Chemical Engineering , University of Applied Sciences Münster , Steinfurt , Germany
| | - Reinhard Lorenz
- b Department of Chemical Engineering , University of Applied Sciences Münster , Steinfurt , Germany
| | - Judith Kreyenschmidt
- a Faculty of Agriculture, Institute of Nutritional and Food Sciences, Food Processing Engineering , University of Bonn , Bonn , Germany
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Upadhyay R, Naskar S, Bhaskar N, Bose S, Basu B. Modulation of Protein Adsorption and Cell Proliferation on Polyethylene Immobilized Graphene Oxide Reinforced HDPE Bionanocomposites. ACS Appl Mater Interfaces 2016; 8:11954-11968. [PMID: 27108739 DOI: 10.1021/acsami.6b00946] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The uniform dispersion of nanoparticles in a polymer matrix, together with an enhancement of interfacial adhesion is indispensable toward achieving better mechanical properties in the nanocomposites. In the context to biomedical applications, the type and amount of nanoparticles can potentially influence the biocompatibility. To address these issues, we prepared high-density polyethylene (HDPE) based composites reinforced with graphene oxide (GO) by melt mixing followed by compression molding. In an attempt to tailor the dispersion and to improve the interfacial adhesion, we immobilized polyethylene (PE) onto GO sheets by nucleophilic addition-elimination reaction. A good combination of yield strength (ca. 20 MPa), elastic modulus (ca. 600 MPa), and an outstanding elongation at failure (ca. 70%) were recorded with 3 wt % polyethylene grafted graphene oxide (PE-g-GO) reinforced HDPE composites. Considering the relevance of protein adsorption as a biophysical precursor to cell adhesion, the protein adsorption isotherms of bovine serum albumin (BSA) were determined to realize three times higher equilibrium constant (Keq) for PE-g-GO-reinforced HDPE composites as compared to GO-reinforced composites. To assess the cytocompatibility, we grew osteoblast cell line (MC3T3) and human mesenchymal stem cells (hMSCs) on HDPE/GO and HDPE/PE-g-GO composites, in vitro. The statistically significant increase in metabolically active cell over different time periods in culture for up to 6 days in MC3T3 and 7 days for hMSCs was observed, irrespective of the substrate composition. Such observation indicated that HDPE with GO or PE-g-GO addition (up to 3 wt %) can be used as cell growth substrate. The extensive proliferation of cells with oriented growth pattern also supported the fact that tailored GO addition can support cellular functionality in vitro. Taken together, the experimental results suggest that the PE-g-GO in HDPE can effectively be utilized to enhance both mechanical and cytocompatibility properties and can further be explored for potential biomedical applications.
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Affiliation(s)
- Rahul Upadhyay
- Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science ,Bangalore 560012, India
| | - Sharmistha Naskar
- Center for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Nitu Bhaskar
- Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science ,Bangalore 560012, India
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science ,Bangalore 560012, India
- Center for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
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38
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Khan FR, Syberg K, Shashoua Y, Bury NR. Influence of polyethylene microplastic beads on the uptake and localization of silver in zebrafish (Danio rerio). Environ Pollut 2015; 206:73-79. [PMID: 26142753 DOI: 10.1016/j.envpol.2015.06.009] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 05/31/2015] [Accepted: 06/01/2015] [Indexed: 06/04/2023]
Abstract
This study aimed to determine whether the uptake and localization of Ag in zebrafish was affected by the presence of polyethylene microplastic beads (PE MPBs). Zebrafish were exposed to 1 μg Ag L(-1) (radiolabelled with (110m)Ag) for 4 and 24 h in the presence or absence of PE MPBs (10, 100 or 1000 MPBs mL(-1)), and one treatment in which MPBs (1000 MPBs mL(-1)) were incubated with Ag to promote adsorption. The presence of MPBs, at any of the tested doses, had no effect on the uptake or localization of Ag. However, exposure to the Ag-incubated MPBs (∽75% of the Ag bound to MPBs) significantly reduced Ag uptake at both time points and also significantly increased the proportion of intestinal Ag. This study demonstrates that microplastics can alter the bioavailability and uptake route of a metal contaminant in a model fish species.
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Affiliation(s)
- Farhan R Khan
- Department of Environmental, Social and Spatial Change (ENSPAC), Roskilde University, Universitetsvej 1, PO Box 260, DK-4000, Roskilde, Denmark.
| | - Kristian Syberg
- Department of Environmental, Social and Spatial Change (ENSPAC), Roskilde University, Universitetsvej 1, PO Box 260, DK-4000, Roskilde, Denmark
| | - Yvonne Shashoua
- Department of Conservation, National Museum of Denmark, Brede, 2800, Kongens Lyngby, Denmark
| | - Nicolas R Bury
- Nutritional Sciences Division, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, United Kingdom
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39
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Wu FQ, Ye J, Wu LG. [Inhibitory effect of zoledronate sodium on periprosthetic osteolysis induced by polyethylene particles]. Zhongguo Gu Shang 2015; 28:936-939. [PMID: 26727788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To observe the effect and mechanisim of zoledronate sodium on periprosthetic osteolysis in rat induced by polyethylene particles. METHODS Total 30 adult male SD rats, weighting from 250 to 300 g, were selected and randomly divided into three groups: blank control group, model control group and zoledronate sodium group respectively, 10 animals for each group. No treatment was performed in the blank control group. In model control group and zoledronate sodium group, the modle of periprosthetic osteolysis in rats were made by implanting polyethylene particles and titanium rods into their right femurs. After operation, rats in zoledronate sodium group were administered with zoledronate sodium (0.1 mg/kg each week) through subcutaneous injection for 8 weeks, then the blood was obtained and all experimental animals were sacrificed to get the right femur specimens. The femur BMD, IL-1β, IL-6, TNF-α, serum TRACP5b and CTX-I were detected. RESULTS Compared with the model control group, the femur BMD was increased, while IL-1β, IL-6 and TNF-α were all decreased in zoledronate sodium group; the serum TRACP5b and CTX-I level were both reduced in zoledronate sodium group. CONCLUSION The zoledronate sodium could effectively inhibit periprosthetic osteolysis in rats induced by polyethylene particles, which might be realized by inhibiting the activity of osteoclasts and the expression of IL-1β, IL-6 and TNF-α. It provides a new method to treat periprosthetic osteolysis of the artificial joint prosthesis.
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40
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Reznickova A, Novotna Z, Kolska Z, Kasalkova NS, Rimpelova S, Svorcik V. Enhanced adherence of mouse fibroblast and vascular cells to plasma modified polyethylene. Mater Sci Eng C Mater Biol Appl 2015; 52:259-66. [PMID: 25953566 DOI: 10.1016/j.msec.2015.03.052] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/05/2015] [Accepted: 03/23/2015] [Indexed: 02/07/2023]
Abstract
Since the last decade, tissue engineering has shown a sensational promise in providing more viable alternatives to surgical procedures for harvested tissues, implants and prostheses. Biomedical polymers, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE) and ultra-high molecular weight polyethylene (UHMWPE), were activated by Ar plasma discharge. Degradation of polymer chains was examined by determination of the thickness of ablated layer. The amount of an ablated polymer layer was measured by gravimetry. Contact angle, measured by goniometry, was studied as a function of plasma exposure and post-exposure aging times. Chemical structure of modified polymers was characterized by angle resolved X-ray photoelectron spectroscopy. Surface chemistry and polarity of the samples were investigated by electrokinetic analysis. Changes in surface morphology were followed using atomic force microscopy. Cytocompatibility of plasma activated polyethylene foils was studied using two distinct model cell lines; VSMCs (vascular smooth muscle cells) as a model for vascular graft testing and connective tissue cells L929 (mouse fibroblasts) approved for standardized material cytotoxicity testing. Specifically, the cell number, morphology, and metabolic activity of the adhered and proliferated cells on the polyethylene matrices were studied in vitro. It was found that the plasma treatment caused ablation of the polymers, resulting in dramatic changes in their surface morphology and roughness. ARXPS and electrokinetic measurements revealed oxidation of the polymer surface. It was found that plasma activation has a positive effect on the adhesion and proliferation of VSMCs and L929 cells.
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Affiliation(s)
- Alena Reznickova
- Department of Solid State Engineering, Institute of Chemical Technology Prague, 166 28 Prague 6, Czech Republic.
| | - Zdenka Novotna
- Department of Solid State Engineering, Institute of Chemical Technology Prague, 166 28 Prague 6, Czech Republic.
| | - Zdenka Kolska
- Faculty of Science, J.E. Purkyně University, 400 96 Usti nad Labem, Czech Republic
| | - Nikola Slepickova Kasalkova
- Department of Solid State Engineering, Institute of Chemical Technology Prague, 166 28 Prague 6, Czech Republic
| | - Silvie Rimpelova
- Department of Biochemistry and Microbiology, Institute of Chemical Technology Prague, 166 28 Prague 6, Czech Republic
| | - Vaclav Svorcik
- Department of Solid State Engineering, Institute of Chemical Technology Prague, 166 28 Prague 6, Czech Republic
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41
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Selke S, Auras R, Nguyen TA, Castro Aguirre E, Cheruvathur R, Liu Y. Evaluation of biodegradation-promoting additives for plastics. Environ Sci Technol 2015; 49:3769-3777. [PMID: 25723056 DOI: 10.1021/es504258u] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biodegradation-promoting additives for polymers are increasingly being used around the world with the claim that they effectively render commercial polymers biodegradable. However, there is a lot of uncertainty about their effectiveness in degrading polymers in different environments. In this study, we evaluated the effect of biodegradation-promoting additives on the biodegradation of polyethylene (PE) and polyethylene terephthalate (PET). Biodegradation was evaluated in compost, anaerobic digestion, and soil burial environments. None of the five different additives tested significantly increased biodegradation in any of these environments. Thus, no evidence was found that these additives promote and/or enhance biodegradation of PE or PET polymers. So, anaerobic and aerobic biodegradation are not recommended as feasible disposal routes for nonbiodegradable plastics containing any of the five tested biodegradation-promoting additives.
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Affiliation(s)
- Susan Selke
- †School of Packaging, Michigan State University, East Lansing, Michigan 48824, United States
| | - Rafael Auras
- †School of Packaging, Michigan State University, East Lansing, Michigan 48824, United States
| | - Tuan Anh Nguyen
- †School of Packaging, Michigan State University, East Lansing, Michigan 48824, United States
| | - Edgar Castro Aguirre
- †School of Packaging, Michigan State University, East Lansing, Michigan 48824, United States
| | - Rijosh Cheruvathur
- †School of Packaging, Michigan State University, East Lansing, Michigan 48824, United States
| | - Yan Liu
- ‡Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan 48824, United States
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42
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Jablonski H, Kauther MD, Bachmann HS, Jäger M, Wedemeyer C. Calcitonin gene-related peptide modulates the production of pro-inflammatory cytokines associated with periprosthetic osteolysis by THP-1 macrophage-like cells. Neuroimmunomodulation 2015; 22:152-65. [PMID: 24853723 DOI: 10.1159/000360988] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 02/27/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE An anti-resorptive impact of the neuropeptide calcitonin gene-related peptide (CGRP) on periprosthetic osteolysis, the leading cause of early prosthesis loosening, has been shown previously. In this study, the impact of CGRP on pro-inflammatory cytokine production associated with periprosthetic osteolysis was analysed using THP-1 macrophage-like cells. METHODS Cells were stimulated with ultra-high-molecular-weight polyethylene (UHMWPE) particles (cell-to-particle ratios of 1:100 and 1:500) and lipopolysaccharides (LPS; 1 µg/ml) to establish osteolytic conditions, and simultaneously treated with CGRP (10(-8)M). Receptor activator of nuclear factor-κB (RANK), RANK ligand (RANKL) and tumour necrosis factor (TNF)-α mRNA expression were measured by quantitative RT-PCR. RANK protein was detected by Western blot. Secreted protein levels of TNF-α as well as interleukin (IL)-1β and IL-6 were quantified in cell culture supernatants by ELISA and Bio-Plex cytokine assay, respectively. RESULTS Activation of macrophage-like cells failed to enhance the production of RANK but led to a dose- and time-dependent increase of TNF-α mRNA and secreted protein levels of TNF-α, IL-1β and IL-6. Application of CGRP time-dependently suppressed TNF-α mRNA expression induced by low-particle concentrations and LPS, while both particle- and LPS-induced secretion of TNF-α was inhibited. A pronounced inhibitory effect of CGRP on LPS-induced cytokine production at 24 h of incubation was also observed with IL-1β and IL-6. CONCLUSIONS CGRP shows a time-dependent inhibitory effect on the secretion of osteolysis-associated pro-inflammatory cytokines, indicating an indirect anti-resorptive influence of the neuropeptide on both aseptic prosthesis loosening and bacterially induced bone resorption which might enhance the life time of total joint replacements.
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Affiliation(s)
- Heidrun Jablonski
- Department of Orthopaedics, University Hospital Essen, University of Duisburg Essen, Essen, Germany
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43
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Croxton SD, Stansly PA. Metalized polyethylene mulch to repel Asian citrus psyllid, slow spread of huanglongbing and improve growth of new citrus plantings. Pest Manag Sci 2014; 70:318-323. [PMID: 23616306 DOI: 10.1002/ps.3566] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 04/16/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Greening or huanglongbing (HLB) is a debilitating disease of citrus caused by Candidatus Liberibactor asiaticus and transmitted by the Asian citrus psyllid (ACP), Diaphorina citri. HLB now occurs worldwide in all major citrus growing regions except the Mediterranean and Australia. Management relies principally on insecticidal control of the ACP vector, but is insufficient, even for young trees which are most susceptible to the disease. We tested the ability of metalized polyethylene mulch to repel adult ACP as well as effects on incidence of HLB and early tree growth. RESULTS Metalized mulch significantly reduced ACP populations and HLB incidence compared to whiteface mulch or bare ground. In addition, metalized mulch, together with the associated drip irrigation and fertigation system, increased soil moisture, reduced weed pressure, and increased tree growth rate. CONCLUSION Metalized mulch slows spread of ACP and therefore HLB pressure on young citrus trees. Metalized mulch can thereby augment current control measures for young trees based primarily on systemic insecticides. Additional costs could be compensated for by increased tree growth rate which would shorten time to crop profitability. These advantages make a compelling case for large-scale trials using metalized mulch in young citrus plantings threatened by HLB.
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Affiliation(s)
- Scott D Croxton
- Southwest Florida Research and Education Center, University of Florida-IFAS, Immokalee, FL, 34142, USA
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Abstract
The anisotropic alignment of cardiomyocytes in native myocardium tissue is a functional feature that is absent in traditional in vitro cardiac cell culture. Microenvironmental factors cue structural organization of the myocardium, which promotes the mechanical contractile properties and electrophysiological patterns seen in mature cardiomyocytes. Current nano- and microfabrication techniques, such as photolithography, generate simplified cell culture topographies that are not truly representative of the multifaceted and multi-scale fibrils of the cardiac extracellular matrix. In addition, such technologies are costly and require a clean room for fabrication. This chapter offers an easy, fast, robust, and inexpensive fabrication of biomimetic multi-scale wrinkled surfaces through the process of plasma treating and shrinking prestressed thermoplastic. Additionally, this chapter includes techniques for culturing stem cells and their cardiac derivatives on these substrates. Importantly, this wrinkled cell culture platform is compatible with both fluorescence and bright-field imaging; real-time physiological monitoring of CM action potential propagation and contraction properties can elucidate cardiotoxicity drug effects.
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Affiliation(s)
- Nicole Mendoza
- Department of Biomedical Engineering, University of California, 5200 Engineering Hall Irvine, Irvine, CA, USA
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45
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Hu LX, He J, Hou L, Wang H, Li J, Xie C, Duan Z, Sun LK, Wang X, Zhu C. Biological evaluation of the copper/low-density polyethylene nanocomposite intrauterine device. PLoS One 2013; 8:e74128. [PMID: 24058521 PMCID: PMC3776804 DOI: 10.1371/journal.pone.0074128] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 07/31/2013] [Indexed: 11/19/2022] Open
Abstract
Devices and materials intended for clinical applications as medical and implant devices should be evaluated to determine their biocompatibility in physiological systems. This article presents results from cytotoxicity assay of L929 mouse fibroblasts culture, tests for skin irritation, intracutaneous reactivity and sensitization, and material implantation tests for the novel copper/low-density polyethylene nanocomposite intrauterine device (nano-Cu/LDPE IUD) with potential for future clinical utilization. Cytotoxicity test in vitro was conducted to evaluate the change in morphology, growth and proliferation of cultured L929 mouse fibroblasts, which in vivo examination for skin irritation (n = 6) and intracutaneous reactivity (n = 6) were carried out to explore the irritant behavior in New Zealand White rabbits. Skin sensitization was implemented to evaluate the potential skin sensitizing in Hartley guinea pigs (n = 35). The materials were implanted into the spinal muscle of rabbits (n = 9). The cytotoxicity grade of the nano-Cu/LDPE IUD was 0-1, suggested that the composite was nontoxic or mildly cytotoxic; no irritation reaction and skin sensitization were identified in any animals of specific extracts prepared from the material under test; similarly to the control sides, the inflammatory reaction was observed in the rabbits living tissue of the implanted material in intramuscular implantation assay. They indicated that the novel composite intrauterine device presented potential for this type of application because they meet the requirements of the standard practices recommended for evaluating the biological reactivity. The nano-Cu/LDPE IUD has good biocompatibility, which is biologically safe for the clinical research as a novel contraceptive device.
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Affiliation(s)
- Li-Xia Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jing He
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- Central Hospital of Wuhan, Wuhan, P.R. China
| | - Li Hou
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Hong Wang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jun Li
- Wuchang District Maternal and Child Health Hospital, Wuhan, P.R. China
| | - Changsheng Xie
- Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Zhuo Duan
- Dayu Medical Devices Co., Ltd., Jingzhou, P.R. China
| | - Li-Kui Sun
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Xin Wang
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Changhong Zhu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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46
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Lanina SI, Kaminskaia NM, Beniaev NE, Suslova VI, Grigor'evskaia MS. [The possibility of using inorganic fillers and matrix polymers in materials for radiation protection]. Med Tekh 2012:10-13. [PMID: 23304984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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ivanov IS, Lazarenko VA, Ivanov SV, Goriainova GN, Ivanov AV. [Influence of exogenous embryonic fibroblasts on collagen type I and type III ratio in the tissues of paraprosthetic capsule (experimental work)]. Tsitologiia 2012; 54:783-789. [PMID: 23285732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nowadays, the use of synthetic prosthesis is obligatory method in surgical treatment of large and giant ventral hernias. We have fulfilled comparative investigation of the dynamics of collagen Type I to Type III ratio in paraprosthetic region in mice when using implants, Esphyl - polyethylene, Ecophlon - polytetrafluorethylene, and Uniflex - polyvinylidenfluoride, with a one- and two-time introduction of cultured fibroblasts into paraprosthetic region at different times after implantations and without the introduction. Use of Sirius Red dye staining and polarization microscopy revealed that, in short period (10 days after endoprosthesis implantation), the implication of fibroblasts and the number of implications did not affect the collagen Types ratio. In later stages (30-60 days after endoprosthesis implantation) a significant increase in collagen Type I was observed when using all the materials. The ratio of collagen Type I to Type III was maximal at all stages of the experiment in the case of the implant Uniflex. Double implication of exogenous fibroblasts accelerated the increase in the collagen Type I to Type III ratio to a greater extent.
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Sahin I, Aykan A, Acikel C, Alhan D, Isik S. Total lower eyelid reconstruction with superficial temporal fascia flap and porous polyethylene implant: a case report. J Plast Reconstr Aesthet Surg 2011; 65:110-3. [PMID: 21778127 DOI: 10.1016/j.bjps.2011.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 05/11/2011] [Accepted: 06/10/2011] [Indexed: 11/18/2022]
Abstract
Total reconstruction of the eyelid after serious periorbital injury is a challenging procedure for plastic and reconstructive surgery. Although several methods have been used for reconstructing the eyelids, such as advancement flap with fascia lata sling, island mucochrondrocutaneous flap, prefabricated temporal island flap, porous polyethylene and superficial temporal fascia flap, creating a supportive eyelid for housing an artificial eye without complication is still an ongoing problem. In the case presented, superficial temporal fascia flap with porous polyethylene was used for the reconstruction of total lower eyelid.
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Affiliation(s)
- Ismail Sahin
- Department of Plastic and Reconstructive Surgery, Gulhane Military Medical Academy, 06010 Etlik, Ankara, Turkey
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Nava-Ortiz CAB, Burillo G, Concheiro A, Bucio E, Matthijs N, Nelis H, Coenye T, Alvarez-Lorenzo C. Cyclodextrin-functionalized biomaterials loaded with miconazole prevent Candida albicans biofilm formation in vitro. Acta Biomater 2010; 6:1398-404. [PMID: 19874920 DOI: 10.1016/j.actbio.2009.10.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 09/28/2009] [Accepted: 10/22/2009] [Indexed: 11/18/2022]
Abstract
Polyethylene (PE) and polypropylene (PP) were functionalized at their surfaces with cyclodextrins (CDs) in order to prevent the adhesion and proliferation of Candida albicans on medical devices made from these polymers. The surface functionalization involved the grafting of glycidyl methacrylate (GMA) after oxidative gamma-ray pre-irradiation, followed by the attachment of beta-CD and HP-beta-CD to PE-g-GMA and PP-g-GMA surfaces. The yield of CD functionalization directly depended on the amount of GMA grafted. The presence of CDs on the surface of the polymers did not compromise their cell compatibility, but remarkably changed their protein adsorption profile. In contrast to unmodified PE and PP that adsorb significant amounts of fibrinogen ( approximately 0.047 mg cm(-2)) but not albumin, the CD-modified polyethers promoted the adsorption of albumin (between 0.015 and 0.155 mg cm(-2)) and reduced the adsorption of fibrinogen. Furthermore, functionalization with CDs provided PE and PP with the capability to incorporate the anti-fungal drug miconazole (up to 0.27 mg cm(-2)), leading to reduced biofilm formation by C. albicans in an in vitro biofilm model system. Overall, the results of the work indicate that the novel approach for functionalization of PE and PP is potentially useful to reduce the likelihood of foreign body-related infections.
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Affiliation(s)
- Cesar A B Nava-Ortiz
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria, México DF 04510, Mexico
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50
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Robledo-Ortíz JR, Ramírez-Arreola DE, Gomez C, González-Reynoso O, González-Núñez R. Bacterial immobilization by adhesion onto agave-fiber/polymer foamed composites. Bioresour Technol 2010; 101:1293-1299. [PMID: 19819131 DOI: 10.1016/j.biortech.2009.09.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 09/15/2009] [Accepted: 09/15/2009] [Indexed: 05/28/2023]
Abstract
Adhesion of Pseudomonas putida F1 onto agave-fiber/recycled-polyethylene foamed composites was studied under different controlled conditions. The adhesion process was analyzed in batch experiments controlling factors such as pH, contact time, temperature, initial biomass concentration and ionic strength; and was verified by scanning electron microscopy (SEM). The number of adhered bacteria after the experimental time was determined by difference between concentration of suspended cells in NaCl solution contained in two different Erlenmeyer flasks, one of the flasks with composite pellets and the other one without them. The concentration of cells in each flask was obtained using the serial dilution technique. Experimental data analysis showed that adsorption follows first-order kinetics. And it was further corroborated to be an irreversible process. For the first time, an equation is proposed here to predict the correlation between adhered bacteria and aqueous pH. In addition to the obvious reuse of waste material, these results suggested that agave-fiber/polymer foamed composites could be used as support for bacterial immobilization to be applied, among others in environmental processes such as bioremediation and biofiltration of gases with almost limitless possibilities.
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Affiliation(s)
- J R Robledo-Ortíz
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco, C.P. 44430, Mexico
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