97 research outputs found

    Sublethal effects in <i>Perinereis gualpensis</i> (Polychaeta: Nereididae) exposed to mercury-pyrene sediment mixture observed in a multipolluted estuary

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    Sediment-living organisms can be subjected to a multi-pollution condition due to an increase in the diversity of contaminants. Sediment mixtures of Mercury (Hg) and some polycyclic aromatics hydrocarbons like Pyrene (Pyr) are common in heavily industrialized coastal zones. In the present study, greater than (>) and less than (Perinereis gualpensis at short and medium-term exposure. Hg + Pyr significantly influenced the uptake/kinetics of Hg and Pyr metabolite 1-OH-pyrene in polychaete tissues during the exposure time compared with separate treatments of each analyte (p P. gualpensis when exposed to >PEL Hg concentration with < PEL Pyr in sediments. Results also reveal the importance of the exposure time, endpoints involved as well as of the contaminant monitoring during the whole experiments in assessing the interactive effects of the contaminant mixture.Facultad de Ciencias ExactasCentro de Investigaciones del Medioambient

    Enfoque transdisciplinar para el estudio del cinturón frutihortícola de General Pueyrredon. Aportes para la generación de herramientas para el desarrollo sustentable

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    Objetivo general: Diagnosticar y evaluar las dimensiones socio-económica, sanitaria, ambiental, agronómica y jurídica del cinturón frutihortícola del Partido de General Pueyrredon, a fin de proponer alternativas de manejo sostenibles y desarrollar instrumentos para la gestión pública y privada.Fil: González, M. V. Universidad Nacional de Mar del Plata. Facultad de Agronomía; Argentina.Fil: Lacaze, María Victoria. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Miglioranza, K. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales; Argentina.Fil: Cesari, A. Universidad Nacional de Mar del Plata. Escuela Superior de Medicina; Argentina.Fil: Ponce, A. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina.Fil: Borrás, Graciela. Universidad Nacional de Mar del Plata. Facultad de Psicología; Argentina.Fil: Cendón, María Laura. Universidad Nacional de Mar del Plata. Facultad de Humanidades; Argentina.Fil: Oviedo, C. Universidad Nacional de Mar del Plata. Facultad de Derecho; Argentina.Fil: Manetti, P. Universidad Nacional de Mar del Plata. Facultad de Agronomía; Argentina

    Pesticides in soil, groundwater and food in Latin America as part of one health.

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    We here report of a conference about "Pesticides in Soil, Groundwater and Food in Latin America as part of One Health" that took place at the "IV Seminario Internacional de Sanidad Agropecuaria (SISA)" in Varadero, Cuba, 8-12 May 2023. Researchers of Latin America (Argentina, Brazil, Chile, Costa Rica, Colombia, Cuba, Mexico) and Switzerland (workshop initiator) held presentations about occurrence and effects of pesticides on the environment, human health, the replacement of highly hazardous pesticides (HHP) by agroecological alternatives and the agri-food value chain. In a subsequent round table discussion, the presenters identified deficits, needs, interests and opportunities. According to them, the lack of awareness of pesticide use affects the health and safety of workers applying the chemicals. Despite Latin America representing the main agricultural area in the world with a very intense pesticide use, monitoring data of pesticides in soil, surface and groundwaters, food, as well as in humans are missing. Risks of pesticides to humans should be assessed so that authorities can withdraw or limit within "short time" the access to corresponding formulations on the market. Also, communication is not state of the art and should be improved as, e.g. the teaching of workers and farmers, how to correctly use and apply pesticides or the briefing of decision makers. Pollinators suffer from multiple stressors not the least due to pesticides, and alternatives are badly needed. On the technical side, the different analytical methods to determine residues of active ingredients and transformation products in matrices of concern should be harmonized among laboratories.Seven future actions and goals were identified to overcome the above deficits. Next steps after the publishing of this conference report are to harmonize and complete the information status of the presenters by exchanging the results/data already present. Therefore, a platform of interaction to address issues described above and to enhance collaboration shall be created. Samples of different matrices shall be exchanged to harmonize the chemical analysis and establish interlaboratory comparisons. Such activities might be facilitated by joining international associations or organizations, where researchers can offer their expertise, or by forming a new pesticide network for Central and South America that could present tailored projects to national and international organizations and funding agencies

    GAPS-megacities: A new global platform for investigating persistent organic pollutants and chemicals of emerging concern in urban air

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    A pilot study was initiated in 2018 under the Global Atmospheric Passive Sampling (GAPS) Network named GAPS-Megacities. This study included 20 megacities/major cities across the globe with the goal of better understanding and comparing ambient air levels of persistent organic pollutants and other chemicals of emerging concern, to which humans residing in large cities are exposed. The first results from the initial period of sampling are reported for 19 cities for several classes of flame retardants (FRs) including organophosphate esters (OPEs), polybrominated diphenyl ethers (PBDEs), and halogenated flame retardants (HFRs) including new flame retardants (NFRs), tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCDD). The two cities, New York (USA) and London (UK) stood out with ∼3.5 to 30 times higher total FR concentrations as compared to other major cities, with total concentrations of OPEs of 15,100 and 14,100 pg/m, respectively. Atmospheric concentrations of OPEs significantly dominated the FR profile at all sites, with total concentrations in air that were 2–5 orders of magnitude higher compared to other targeted chemical classes. A moderately strong and significant correlation (r = 0.625, p < 0.001) was observed for Gross Domestic Product index of the cities with total OPEs levels. Although large differences in FR levels were observed between some cities, when averaged across the five United Nations regions, the FR classes were more evenly distributed and varied by less than a factor of five. Results for Toronto, which is a ‘reference city’ for this study, agreed well with a more in-depth investigation of the level of FRs over different seasons and across eight sites representing different urban source sectors (e.g. traffic, industrial, residential and background). Future sampling periods under this project will investigate trace metals and other contaminant classes, linkages to toxicology, non-targeted analysis, and eventually temporal trends. The study provides a unique urban platform for evaluating global exposome.A global study across 20 megacities/major cities reporting urban air concentrations of flame retardants and plasticizers.Authors thank the United Nations Environment Programme (UNEP) and the Chemicals Management Plan (CMP) for financial support. The worldwide implementation of the Global Monitoring Plan is made possible thanks to the generous contributions to the Stockholm Convention Voluntary Trust Fund from the Governments of Japan, Norway, Sweden, and through the European Commission’s Thematic Programme for Environment andSustainable Management of Natural Resources, including Energy (ENRTP). Further, the contribution of the projects to support POPs monitoring activities in regions, funded through the Global Environment Facility (GEF) and the Strategic Approach to International Chemicals Management (SAICM), is greatly acknowledged. Monitoring activities and data collection and analysis are implemented in the five UN regions in cooperation with strategic partners and through the involvement of Regional Organization Groups and Global Coordination Group. We also thank Yasuyuki Shibata and Yoshikatsu Takazawa (Tokyo, Japan); Juan Mu~noz-Arnanz (Madrid, Spain) and Dilek €Ozkan and Sinan Kızıltug (_Istanbul, Turkey) for their help and assistance in the sampling campaign

    Stress echo 2020: The international stress echo study in ischemic and non-ischemic heart disease

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    Abstract Background Stress echocardiography (SE) has an established role in evidence-based guidelines, but recently its breadth and variety of applications have extended well beyond coronary artery disease (CAD). We lack a prospective research study of SE applications, in and beyond CAD, also considering a variety of signs in addition to regional wall motion abnormalities. Methods In a prospective, multicenter, international, observational study design, > 100 certified high-volume SE labs (initially from Italy, Brazil, Hungary, and Serbia) will be networked with an organized system of clinical, laboratory and imaging data collection at the time of physical or pharmacological SE, with structured follow-up information. The study is endorsed by the Italian Society of Cardiovascular Echography and organized in 10 subprojects focusing on: contractile reserve for prediction of cardiac resynchronization or medical therapy response; stress B-lines in heart failure; hypertrophic cardiomyopathy; heart failure with preserved ejection fraction; mitral regurgitation after either transcatheter or surgical aortic valve replacement; outdoor SE in extreme physiology; right ventricular contractile reserve in repaired Tetralogy of Fallot; suspected or initial pulmonary arterial hypertension; coronary flow velocity, left ventricular elastance reserve and B-lines in known or suspected CAD; identification of subclinical familial ..

    DOENÇAS DIAGNOSTICADAS PELO LABORATÓRIO DE PATOLOGIA VETERINÁRIA EM 2017

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    Este trabalho apresenta a casuística de diagnósticos no ano de 2017 do Laboratório de Patologia Veterinária do IFC Campus Concórdia. Foram 230 diagnósticos em bovinos, 32 em ovinos e 93 em suínos, totalizando 355. Destes, 247 (69,6%) foram através de necropsias e 108 (30,4%) através de amostras formolizadas enviadas por veterinários. Em bovinos as doenças mais incidentes foram anaplasmose e babesiose com 11 casos cada (4,8%); endocardite com 7 casos (3,0%); hemoncose com 6 casos (2,6%) e retículo pericardite traumática com 6 casos (2,6%). Já em ovinos foi hemoncose com 5 casos (15,7%) e suínos doença de Glässer e colibacilose com 6 casos cada (6,4%).
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