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DeGroot TL, Wolfe JD, Powell LL, Esono F, Ebana A, Barrientos C, Torrent L, Brzeski KE. Human impacts on mammal communities in Rio Campo Nature Reserve, Equatorial Guinea. Afr J Ecol 2023. [DOI: 10.1111/aje.13108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Tiff L. DeGroot
- College of Forest Resources and Environmental Science Michigan Technological University Houghton Michigan USA
- Biodiversity Initiative Houghton Michigan USA
| | - Jared D. Wolfe
- College of Forest Resources and Environmental Science Michigan Technological University Houghton Michigan USA
- Biodiversity Initiative Houghton Michigan USA
| | - Luke L. Powell
- Biodiversity Initiative Houghton Michigan USA
- Institute of Biodiversity, Animal Health and Comparative Medicine University of Glasgow Glasgow UK
- Department of Biosciences Durham University Durham UK
| | - Fidel Esono
- National Institute of Forestry Development and Protected Areas Management (INDEFOR‐AP) Bata Equatorial Guinea
| | - Agustín Ebana
- Biodiversity Initiative Houghton Michigan USA
- National Institute of Forestry Development and Protected Areas Management (INDEFOR‐AP) Bata Equatorial Guinea
| | | | - Laura Torrent
- Biodiversity Initiative Houghton Michigan USA
- BiBio (Biodiversity and Bioindicators Research Group) Natural Sciences Museum of Granollers Granollers Spain
| | - Kristin E. Brzeski
- College of Forest Resources and Environmental Science Michigan Technological University Houghton Michigan USA
- Biodiversity Initiative Houghton Michigan USA
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Juste J, Torrent L, Méndez-Rodríguez A, Howard K, García-Mudarra JL, Nogueras J, Ibáñez C. A new Pipistrelle bat from the oceanic Island of Príncipe (Western Central Africa). J Mammal 2023; 104:361-371. [PMID: 37032701 PMCID: PMC10075340 DOI: 10.1093/jmammal/gyac110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 11/05/2022] [Indexed: 01/12/2023] Open
Abstract
Abstract
We describe a population of pipistrelle-like bats from Príncipe Island (Gulf of Guinea, Western Central Africa) as a new species based on the molecular and morphological characteristics of six specimens collected more than 30 years ago. The description of this new species was not possible until the traditionally entangled systematics of the whole pipistrelle group was clarified in recent years with the inclusion of molecular techniques and adequate species sampling. In this new taxonomic framework, the new species was clearly included within the dark-winged group of the recently described genus Pseudoromicia. The pipistrelles from Príncipe Island present a moderately inflated skull in lateral view with inner upper incisors that are moderately bicuspids and a baculum distinctly long with expanded tips. Besides these morphological characters, the new bat species is distinguished by its dwarfism, being the smallest species recognized within the genus. The ecology and conservation status of this endemic island species are unknown and field studies are urgently needed to evaluate the situation and conservation threats to this new species in its natural habitat.
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Affiliation(s)
- Javier Juste
- Estación Biológica de Doñana, C.S.I.C. , Avda. Américo Vespucio 26, 41092 Sevilla , Spain
- CIBER de Epidemiología y Salud Pública, CIBERESP , 28220 Madrid , Spain
| | - Laura Torrent
- CIBIO-InBIO, Research Centre in Biodiversity and Genetic Resources, University of Porto , Campus de Vairão, 4485-661 Vairão , Portugal
- Natural Sciences Museum of Granollers , Francesc Macià 51, 08401 Granollers , Spain
| | - Aline Méndez-Rodríguez
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana , Prol. Canal de Miramontes 3855, Coapa, Ex de San Juan de Dios, Tlalpan, 14387 Ciudad de México , México
| | - Kelli Howard
- Estación Biológica de Doñana, C.S.I.C. , Avda. Américo Vespucio 26, 41092 Sevilla , Spain
| | | | - Jesús Nogueras
- Estación Biológica de Doñana, C.S.I.C. , Avda. Américo Vespucio 26, 41092 Sevilla , Spain
| | - Carlos Ibáñez
- Estación Biológica de Doñana, C.S.I.C. , Avda. Américo Vespucio 26, 41092 Sevilla , Spain
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Koolen CD, Torrent L, Agarwal A, Meili-Borovinskaya O, Gasilova N, Li M, Luo W, Züttel A. High-Throughput Sizing, Counting, and Elemental Analysis of Anisotropic Multimetallic Nanoparticles with Single-Particle Inductively Coupled Plasma Mass Spectrometry. ACS Nano 2022; 16:11968-11978. [PMID: 35876240 DOI: 10.1021/acsnano.2c01840] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanoparticles (NPs) have wide applications in physical and chemical processes, and their individual properties (e.g., shape, size, and composition) and ensemble properties (e.g., distribution and homogeneity) can significantly affect the performance. However, the extrapolation of information from a single particle to the ensemble remains a challenge due to the lack of suitable techniques. Herein, we report a high-throughput single-particle inductively coupled plasma mass spectrometry (SP-ICP-MS)-based protocol to simultaneously determine the size, count, and elemental makeup of several thousands of (an)isotropic NPs independent of composition, size, shape, and dispersing medium with atomistic precision in a matter of minutes. By introducing highly diluted nebulized aqueous dispersions of NPs directly into the plasma torch of an ICP-MS instrument, individual NPs are atomized and ionized, resulting in ion plumes that can be registered by the mass analyzer. Our proposed protocol includes a phase transfer step for NPs synthesized in organic media, which are otherwise incompatible with ICP-MS instruments, and a modeling tool that extends the measurement of particle morphologies beyond spherical to include cubes, truncated octahedra, and tetrahedra, exemplified by anisotropic Cu NPs. Finally, we demonstrate the versatility of our method by studying the doping of bulk-dilute (<1 at. %) CuAg nanosurface alloys as well as the ease with which ensemble composition distributions of multimetallic NPs (i.e., CuPd and CuPdAg) can be obtained providing different insights in the chemistry of nanomaterials. We believe our combined protocol could deepen the understanding of macroscopic phenomena involving nanoscale structures by bringing about a statistics renaissance in research areas including, among others, materials science, materials chemistry, (nano)physics, (nano)photonics, catalysis, and electrochemistry.
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Affiliation(s)
- Cedric David Koolen
- Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
- Empa Materials Science and Technology, Dübendorf 8600, Switzerland
| | - Laura Torrent
- Bioenergy and Catalysis Laboratory (LBK), Energy and Environment Research Division (ENE), Paul Scherrer Institute (PSI), Villigen 5232, Switzerland
| | - Ayush Agarwal
- Bioenergy and Catalysis Laboratory (LBK), Energy and Environment Research Division (ENE), Paul Scherrer Institute (PSI), Villigen 5232, Switzerland
- School of Architecture, Civil and Environmental Engineering (ENAC IIE GR-LUD), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1035, Switzerland
| | | | - Natalia Gasilova
- Mass Spectrometry and Elemental Analysis Platform (MSEAP), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
| | - Mo Li
- Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
- Empa Materials Science and Technology, Dübendorf 8600, Switzerland
| | - Wen Luo
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Andreas Züttel
- Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
- Empa Materials Science and Technology, Dübendorf 8600, Switzerland
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Torrent L, Apoznański G, Kokurewicz T, Mitrus C, De Maegdt M, Juste J. First record of polydactyly for a European bat, Myotis daubentonii (Chiroptera, Vespertilionidae). MAMMALIA 2022. [DOI: 10.1515/mammalia-2022-0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Despite being one of the most common congenital hand abnormalities in humans, polydactyly remains extremely rare in bats. To date, it has been observed only in two insectivorous families in North America (Molossidae and Vespertilionidae) and a single case for the New World fruit bats (Phyllostomidae). We report the first case of polydactyly in a European bat – a Myotis daubentonii (Vespertilionidae), with eight toes. The bat was found alive, hibernating in the Natura 2000 site (PLH080003 “Nietoperek”) in Poland.
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Affiliation(s)
- Laura Torrent
- Natural Sciences Museum of Granollers , Francesc Macià 51 , Granollers , 08401 , Spain
- CIBIO-InBIO, Research Centre in Biodiversity and Genetic Resources , University of Porto , Campus de Vairão, 4485-661 , Vairão , Portugal
| | - Grzegorz Apoznański
- Department of Vertebrate Ecology and Paleontology , Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences , Chełmońskiego 38c , 51-631 Wrocław , Poland
| | - Tomasz Kokurewicz
- Department of Vertebrate Ecology and Paleontology , Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences , Chełmońskiego 38c , 51-631 Wrocław , Poland
| | - Cezary Mitrus
- Department of Vertebrate Ecology and Paleontology , Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences , Chełmońskiego 38c , 51-631 Wrocław , Poland
| | - Maya De Maegdt
- Biodiversity, Conservation and Restoration , University of Antwerp , Campus Drie Eiken, Universiteitsplein 1 , 2610 Antwerpen , Belgium
| | - Javier Juste
- Estación Biológica de Doñana, C.S.I.C. , Avda. Américo Vespucio 26 , 41092 Sevilla , Spain
- CIBER de Epidemiología y Salud Pública, CIBERESP , 28220 , Madrid , Spain
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Li X, Sanz J, Argudo N, Vernet-Tomas M, Rodríguez N, Torrent L, Fernández-Velilla E, Pera O, Huang Y, Nicolau P, Jiménez M, Segura M, Algara M. Intraoperative irradiation in breast cancer: preliminary results in 80 patients as partial breast irradiation or anticipated boost prior to hypo-fractionated whole breast irradiation. Clin Transl Oncol 2021; 24:829-835. [PMID: 34792725 PMCID: PMC9013337 DOI: 10.1007/s12094-021-02728-0] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/30/2021] [Indexed: 12/03/2022]
Abstract
Purpose To present the first results of intraoperative irradiation (IORT) in breast cancer with a low-energy photon system used as partial breast irradiation (PBI) or as an anticipated boost before whole breast hypo-fractionated irradiation (IORT + WBI), concerning tolerance, side effects, quality of life, and patient-reported outcomes. Materials and methods Eighty patients treated with an Intrabeam® system of 50 kV X-rays received a 20 Gy dose intraoperatively were included. Moderate daily hypofractionation of 2.7 Gy in 15 fractions up to 40.5 Gy was administered if high-risk factors were present. Acute post-operative toxicity, surgery complications, chronic toxicity, patient-reported cosmesis and Breast-Q questionnaire were performed at follow-up visits. Results Thirty-one patients were treated as PBI and the remaining 49 as IORT + WBI. Only the IORT + WBI group presented acute toxicity, mainly mild acute dermatitis (11 patients) and one subacute mastitis. A total of 20 patients presented fibrosis (18 patients grade I, 2 patients grade II), 15 (30.5%) patients in the IORT + WBI group and 3 (9.6%) patients in the group of PBI. The cosmesis evaluation in 73 patients resulted poor, fair, good or excellent in 2, 7, 38 and 26 patients, respectively. In PBI group Breast-Q scored higher, especially in terms of their psychosocial well-being (78 vs 65) and satisfaction with radiation-induced toxicity (77 vs 72, respectively) compared to IORT + WBI group. Conclusion IORT is a well-tolerated procedure with low toxicity, good cosmesis and favorable patient-reported outcomes mainly when administered as PBI.
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Affiliation(s)
- X Li
- Autonomous University of Barcelona, Barcelona, Spain
| | - J Sanz
- Pompeu Fabra University, Barcelona, Spain. .,Radiation Oncology Department, Hospital del Mar, Parc de Salut Mar, C/. Del Gas s/n Edificio B, sótano-2, 08003, Barcelona, Spain. .,Radiation Oncology Research Group, Institut Municipal d'InvestigacióMédica (IMIM), Barcelona, Spain.
| | - N Argudo
- Breast Unit, Hospital del Mar, Barcelona, Spain
| | | | - N Rodríguez
- Pompeu Fabra University, Barcelona, Spain.,Radiation Oncology Department, Hospital del Mar, Parc de Salut Mar, C/. Del Gas s/n Edificio B, sótano-2, 08003, Barcelona, Spain.,Radiation Oncology Research Group, Institut Municipal d'InvestigacióMédica (IMIM), Barcelona, Spain
| | - L Torrent
- Breast Unit, Hospital del Mar, Barcelona, Spain
| | - E Fernández-Velilla
- Radiation Oncology Department, Hospital del Mar, Parc de Salut Mar, C/. Del Gas s/n Edificio B, sótano-2, 08003, Barcelona, Spain
| | - O Pera
- Radiation Oncology Department, Hospital del Mar, Parc de Salut Mar, C/. Del Gas s/n Edificio B, sótano-2, 08003, Barcelona, Spain
| | - Y Huang
- Autonomous University of Barcelona, Barcelona, Spain
| | - P Nicolau
- Breast Unit, Hospital del Mar, Barcelona, Spain
| | - M Jiménez
- Breast Unit, Hospital del Mar, Barcelona, Spain
| | - M Segura
- Breast Unit, Hospital del Mar, Barcelona, Spain
| | - M Algara
- Autonomous University of Barcelona, Barcelona, Spain.,Radiation Oncology Department, Hospital del Mar, Parc de Salut Mar, C/. Del Gas s/n Edificio B, sótano-2, 08003, Barcelona, Spain.,Radiation Oncology Research Group, Institut Municipal d'InvestigacióMédica (IMIM), Barcelona, Spain
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Iglesias M, Torrent L. Silver Nanoparticles and Ionic Silver Separation Using a Cation-Exchange Resin. Variables Affecting Their Separation and Improvements of AgNP Characterization by SP-ICPMS. Nanomaterials (Basel) 2021; 11:nano11102626. [PMID: 34685067 PMCID: PMC8541260 DOI: 10.3390/nano11102626] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/29/2021] [Accepted: 10/02/2021] [Indexed: 11/16/2022]
Abstract
Silver nanoparticles (AgNPs) are frequently found in everyday products and, as a consequence, their release into the environment cannot be avoided. Once in aquatic systems, AgNPs interact with natural constituents and undergo different transformation processes. Therefore, it is important to characterize and quantify AgNPs in environmental waters in order to understand their behavior, their transformation, and their associated toxicological risks. However, the coexistence of ionic silver (Ag+) with AgNPs in aquatic systems is one of the greatest challenges for the determination of nanosilver. Ion-exchange resins can be used to separate Ag+ from AgNPs, taking advantage of the different charges of the species. In this work, Dowex 50W-X8 was used to separate Ag+ and AgNPs in order to easily determine AgNP concentrations using inductively coupled plasma optical emission spectroscopy. The separation methodology was successfully applied to river water samples with different ratios of Ag+ and AgNPs. However, the methodology is not useful for wastewater samples. The described methodology also demonstrated an improvement in the determination of the particle size of AgNPs present in river waters by single particle inductively coupled plasma mass spectrometry when a significant amount of Ag+ is also present.
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Affiliation(s)
- Mònica Iglesias
- Department of Chemistry, University of Girona, C/M. Aurèlia Capmany, 69, 17003 Girona, Spain
- Correspondence: ; Tel.: +34-606-529-503
| | - Laura Torrent
- Bioenergy and Catalysis Laboratory (LBK), Energy and Environment Research Division (ENE), Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232 Villigen, Switzerland;
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Rocha R, Fernández-Llamazares Á, López-Baucells A, Andriamitandrina SFM, Andriatafika ZE, Temba EM, Torrent L, Burgas D, Cabeza M. Human-Bat Interactions in Rural Southwestern Madagascar through a Biocultural Lens. J ETHNOBIOL 2021. [DOI: 10.2993/0278-0771-41.1.53] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ricardo Rocha
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Álvaro Fernández-Llamazares
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Adrià López-Baucells
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Santatra F. M. Andriamitandrina
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Zo Emmanuel Andriatafika
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Eric Marcel Temba
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Laura Torrent
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Daniel Burgas
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Mar Cabeza
- Global Change and Conservation (GCC), Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
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Torrent L, Iglesias M, Marguí E, Hidalgo M, Verdaguer D, Llorens L, Kodre A, Kavčič A, Vogel-Mikuš K. Uptake, translocation and ligand of silver in Lactuca sativa exposed to silver nanoparticles of different size, coatings and concentration. J Hazard Mater 2020; 384:121201. [PMID: 31586917 DOI: 10.1016/j.jhazmat.2019.121201] [Citation(s) in RCA: 12] [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: 07/17/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 05/21/2023]
Abstract
The broad use of silver nanoparticles (AgNPs) in daily life products enhances their possibilities to reach the environment. Therefore, it is important to understand the uptake, translocation and biotransformation in plants and the toxicological impacts derived from these biological processes. In this work, Lactuca sativa (lettuce) was exposed during 9 days to different coated (citrate, polyvinylpyrrolidone, polyethylene glycol) and sized (60, 75, 100 nm) AgNPs at different concentrations (1, 3, 5, 7, 10, 15 mg L-1). Total silver measurements in lettuce roots indicated that accumulation of AgNPs is influenced by size and concentration, but not by nanoparticle coating. On the other hand, nanosilver translocation to shoots was more pronounced for neutral charged and large sized NPs at higher NP concentrations. Single particle inductively coupled plasma mass spectrometry analysis, after an enzymatic digestion of lettuce tissues indicated the dissolution of some NPs. Ag K-edge X-ray absorption spectroscopy analysis corroborated the AgNPs dissolution due to the presence of less Ag-Ag bonds and appearance of Ag-O and/or Ag-S bonds in lettuce roots. Toxicological effects on lettuces were observed after exposure to nanosilver, especially for transpiration and stomatal conductance. These findings indicated that AgNPs can enter to edible plants, exerting toxicological effects on them.
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Affiliation(s)
- Laura Torrent
- Department of Chemistry, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain
| | - Mònica Iglesias
- Department of Chemistry, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain.
| | - Eva Marguí
- Department of Chemistry, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain
| | - Manuela Hidalgo
- Department of Chemistry, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain
| | - Dolors Verdaguer
- Department of Environmental Sciences, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain
| | - Laura Llorens
- Department of Environmental Sciences, University of Girona, C/M.Aurèlia Capmany 69, 17003 Girona, Spain
| | - Alojz Kodre
- University of Ljubljana, Faculty for Mathematics and Physics, Jadranska 19, SI-1000 Ljubljana, Slovenia; Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Anja Kavčič
- University of Ljubljana, Biotechnical faculty, Department of Biology, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Katarina Vogel-Mikuš
- Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; University of Ljubljana, Biotechnical faculty, Department of Biology, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
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Torrent L, Marguí E, Queralt I, Hidalgo M, Iglesias M. Interaction of silver nanoparticles with mediterranean agricultural soils: Lab-controlled adsorption and desorption studies. J Environ Sci (China) 2019; 83:205-216. [PMID: 31221383 DOI: 10.1016/j.jes.2019.03.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 09/14/2018] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 05/25/2023]
Abstract
The production of silver nanoparticles (AgNPs) has increased tremendously during recent years due to their antibacterial and physicochemical properties. As a consequence, these particles are released inevitably into the environment, with soil being the main sink of disposal. Soil interactions have an effect on AgNP mobility, transport and bioavailability. To understand AgNP adsorption processes, lab-controlled kinetic studies were performed. Batch tests performed with five different Mediterranean agricultural soils showed that cation exchange capacity and electrical conductivity are the main parameters controlling the adsorption processes. The adsorption kinetics of different sized (40, 75, 100 and 200 nm) and coated (citrate, polyvinylpyrrolidone and polyethyleneglycol (PEG)) AgNPs indicated that these nanoparticle properties have also an effect on the adsorption processes. To assess the mobility and bioavailability of AgNPs and to determine if their form is maintained during adsorption/desorption processes, loaded soils were submitted to leaching tests three weeks after batch adsorption studies. The DIN 38414-S4 extraction method indicated that AgNPs were strongly retained on soils, and single-particle inductively coupled plasma mass spectrometry confirmed that silver particles maintained their nanoform, except for 100 nm PEG-AgNPs and 40 nm citrate-coated AgNPs. The DTPA (diethylenetriaminepentaacetic acid) leaching test was more effective in extracting silver, but there was no presence of AgNPs in almost all of these leachates.
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Affiliation(s)
- Laura Torrent
- Department of Chemistry, University of Girona, C/M. Aurèlia Capmany, 69, 17003 Girona, Spain. E-mail:
| | - Eva Marguí
- Department of Chemistry, University of Girona, C/M. Aurèlia Capmany, 69, 17003 Girona, Spain. E-mail:
| | - Ignasi Queralt
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Manuela Hidalgo
- Department of Chemistry, University of Girona, C/M. Aurèlia Capmany, 69, 17003 Girona, Spain. E-mail:
| | - Mònica Iglesias
- Department of Chemistry, University of Girona, C/M. Aurèlia Capmany, 69, 17003 Girona, Spain. E-mail: .
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Torrent L, Laborda F, Marguí E, Hidalgo M, Iglesias M. Combination of cloud point extraction with single particle inductively coupled plasma mass spectrometry to characterize silver nanoparticles in soil leachates. Anal Bioanal Chem 2019; 411:5317-5329. [DOI: 10.1007/s00216-019-01914-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 10/26/2022]
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López-Baucells A, Torrent L, Rocha R, Pavan AC, Bobrowiec PED, Meyer CFJ. Geographical variation in the high-duty cycle echolocation of the cryptic common mustached bat Pteronotus cf. rubiginosus (Mormoopidae). BIOACOUSTICS 2017. [DOI: 10.1080/09524622.2017.1357145] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Adrià López-Baucells
- Centre for Ecology, Evolution and Environmental Changes (cE3c) Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
- Granollers Museum of Natural Sciences c/ Palaudàries, 102 - Jardins Antoni Jonch Cuspinera, Granollers, Spain
- Biological Dynamics of Forest Fragments Project (BDFFP), National Institute for Amazonian Research and Smithsonian Tropical Research Institute, Manaus, Brazil
| | - Laura Torrent
- Granollers Museum of Natural Sciences c/ Palaudàries, 102 - Jardins Antoni Jonch Cuspinera, Granollers, Spain
| | - Ricardo Rocha
- Centre for Ecology, Evolution and Environmental Changes (cE3c) Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
- Biological Dynamics of Forest Fragments Project (BDFFP), National Institute for Amazonian Research and Smithsonian Tropical Research Institute, Manaus, Brazil
- Metapopulation Research Centre, University of Helsinki, Helsinki, Finland
| | - Ana Carolina Pavan
- Departamento de Ciências Biológicas Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, University of Sao Paulo, Piracicaba, Brazil
| | - Paulo Estefano D. Bobrowiec
- Biological Dynamics of Forest Fragments Project (BDFFP), National Institute for Amazonian Research and Smithsonian Tropical Research Institute, Manaus, Brazil
- Instituto Nacional de Pesquisas da Amazônia (INPA) Coordenação de Biodiversidade, Manaus, Brazil
| | - Christoph F. J. Meyer
- Centre for Ecology, Evolution and Environmental Changes (cE3c) Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
- Biological Dynamics of Forest Fragments Project (BDFFP), National Institute for Amazonian Research and Smithsonian Tropical Research Institute, Manaus, Brazil
- Ecosystems and Environment Research Centre (EERC), School of Environment and Life Sciences, University of Salford, Salford, UK
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Abstract
Phosphorylation and, therefore, binding capacity of microtubule-associated protein tau is regulated by specific kinases and phosphatases. Activation of tau kinases plays a crucial role in tau- hyper-phosphorylation in Alzheimer disease (AD) and related tauopathies. Among phosphatases, protein phosphatase 2A, PP2A, is a principal tau dephosphorylating enzyme in the brain. PP2A acts as trimer composed of a catalytic (PP2A C), a scaffolding (PP2A A) and a regulatory (PP2 AB; B55α) subunit. Several abnormalities of PP2A have been reported in AD, including decreased mRNA and protein levels of the PP2A C (not replicated by other studies); decreased protein levels of the PP2A A and B55α; reduced PP2A C methylation at Leu309 due to impaired function methyltransferase type IV; increased PP2A C phosphorylation at Tyr307; up-regulation of the PP2A inhibitors I1 and I2; and loss of enzymatic activity. These observations indicate that PP2A is a putative target of therapeutic intervention considering that enhancing PP2A activity would decrease tau hyper-phosphorylation in AD. In spite of these achievements further studies are needed to replicate the reported individual different alterations converging in PP2A in AD.
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Affiliation(s)
- L Torrent
- Institut de Neuropatologia, Servei Anatomia Patològica, IDIBELL-Hospital Universitari de Bellvitge, Universitat de Barcelona, Hospitalet de LLobregat, Spain
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