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https://www.readbyqxmd.com/read/28441739/the-use-of-immus-in-a-water-environment-instrument-validation-and-application-of-3d-multi-body-kinematic-analysis-in-medicine-and-sport
#1
Anna Lisa Mangia, Matteo Cortesi, Silvia Fantozzi, Andrea Giovanardi, Davide Borra, Giorgio Gatta
The aims of the present study were the instrumental validation of inertial-magnetic measurements units (IMMUs) in water, and the description of their use in clinical and sports aquatic applications applying customized 3D multi-body models. Firstly, several tests were performed to map the magnetic field in the swimming pool and to identify the best volume for experimental test acquisition with a mean dynamic orientation error lower than 5°. Successively, the gait and the swimming analyses were explored in terms of spatiotemporal and joint kinematics variables...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28441638/health-risk-assessment-for-the-consumption-of-fresh-and-preserved-fish-alosa-agone-from-lago-di-como-northern-italy
#2
Silvia Quadroni, Roberta Bettinetti
BACKGROUND: Although banned in many countries for decades, DDTs and PCBs still represent a global threat to food safety. As these contaminants are still present in aquatic ecosystems, fish can be an important contributor to their total dietary intake. OBJECTIVES: Alosa agone specimens were sampled over a period of 10 years (from 2006 to 2015) to provide a representative overview of the DDT and PCB levels of Lago di Como, a deep Italian lake where a DDT input due to secondary sources was observed in recent years...
April 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28441609/dechlorane-plus-induces-oxidative-stress-and-decreases-cyclooxygenase-activity-in-the-blue-mussel
#3
Pierre-Luc Gagné, Marlène Fortier, Marc Fraser, Lise Parent, Cathy Vaillancourt, Jonathan Verreault
Dechlorane Plus (DP) is a chlorinated flame retardant used mainly in electrical wire and cable coating, computer connectors, and plastic roofing materials. Concentrations of DP (syn and anti isomers) are increasingly being reported in aquatic ecosystems worldwide. However, there is exceedingly little information on the exposure-related toxicity of DP in aquatic organisms, especially in bivalves. The objective of this study was to investigate the in vivo and in vitro effects of DP exposure on histopathology, lipid peroxidation (LPO) levels, cyclooxygenase (COX) activity, phagocytosis capacity and efficiency, and DNA strand breakage in the blue mussel (Mytilus edulis) following a 29days exposure (0...
April 17, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28441607/toxicity-assessment-of-zno-decorated-au-nanoparticles-in-the-mediterranean-clam-ruditapes-decussatus
#4
Badreddine Sellami, Amine Mezni, Abdelhafidh Khazri, Imen Bouzidi, Wiem Saidani, David Sheehan, Hamouda Beyrem
The synthesis of hybrid nanomaterials has greatly increased in recent years due to their special physical and chemical properties. However, information regarding the environmental toxicity associated with these chemicals is limited, in particular in the aquatic environment. In the present study, an experiment was performed in which the marine bivalve (Ruditapes decussatus) was exposed for 14days to 2 concentrations of zinc oxide-decorated Au nanoparticles (Au-ZnONPs: Au-ZnONP50=50μg/L; Au-ZnONP100=100μg/L)...
April 15, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28441601/improving-understanding-of-mixed-land-use-watershed-suspended-sediment-regimes-mechanistic-progress-through-high-frequency-sampling
#5
Elliott Kellner, Jason A Hubbart
Given the importance of suspended sediment to biogeochemical functioning of aquatic ecosystems, and the increasing concern of mixed-land-use effects on pollutant loading, there is an urgent need for research that quantitatively characterizes spatiotemporal variation of suspended sediment dynamics in contemporary watersheds. A study was conducted in a representative watershed of the central United States utilizing a nested-scale experimental watershed design, including five gauging sites (n=5) partitioning the catchment into five sub-watersheds...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441466/biomonitoring-of-marine-vertebrates-in-monterey-bay-using-edna-metabarcoding
#6
Elizabeth A Andruszkiewicz, Hilary A Starks, Francisco P Chavez, Lauren M Sassoubre, Barbara A Block, Alexandria B Boehm
Molecular analysis of environmental DNA (eDNA) can be used to assess vertebrate biodiversity in aquatic systems, but limited work has applied eDNA technologies to marine waters. Further, there is limited understanding of the spatial distribution of vertebrate eDNA in marine waters. Here, we use an eDNA metabarcoding approach to target and amplify a hypervariable region of the mitochondrial 12S rRNA gene to characterize vertebrate communities at 10 oceanographic stations spanning 45 km within the Monterey Bay National Marine Sanctuary (MBNMS)...
2017: PloS One
https://www.readbyqxmd.com/read/28441345/levels-and-distribution-of-pollutants-in-the-waters-of-an-aquatic-ecosystem-in-northern-mexico
#7
Jesús Manuel Ochoa-Rivero, Ana Victoria Reyes-Fierro, Ma Del Rosario Peralta-Pérez, Francisco Javier Zavala-Díaz de la Serna, Lourdes Ballinas-Casarrubias, Ivan Salmerón, Héctor Rubio-Arias, Beatriz A Rocha-Gutiérrez
The availability of good quality water resources is essential to ensure healthy crops and livestock. The objective of this study was to evaluate the level of pollution in Bustillos Lagoon in northern Mexico. Physical-chemical parameters like sodium, chloride, sulfate, electrical conductivity, nitrates, and the pesticide dichlorodiphenyltrichloroethane (DDT) were analyzed to determine the water quality available in the lagoon. Although DDT has been banned in several countries, it is still used for agricultural purposes in Mexico and its presence in this area had not been analyzed previously...
April 25, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28440940/from-the-sea-to-the-laboratory-characterization-of-microplastic-as-prerequisite-for-the-assessment-of-ecotoxicological-impact
#8
Annegret Potthoff, Kathrin Oelschlägel, Mechthild Schmitt-Jansen, Christoph Daniel Rummel, Dana Kühnel
The presence of microplastic (MP) in the aquatic environment is recognized as a global-scale pollution issue. Secondary MP particles result from an ongoing fragmentation process governed by various biotic and abiotic factors. For a reliable risk assessment of these MP particles, knowledge about interactions with biota is needed. However, extensive testing with standard organisms under reproducible laboratory conditions with well-characterized MP suspensions is not available yet. As MP in the environment represents a mixture of particles differing in properties (e...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440939/trophic-transfer-of-microplastics-in-aquatic-ecosystems-identifying-critical-research-needs
#9
Sarah Y Au, Cindy M Lee, John E Weinstein, Peter van den Hurk, Stephen J Klaine
To evaluate the process of trophic transfer of microplastics, it is important to consider various abiotic and biotic factors involved in their ingestion, egestion, bioaccumulation, and biomagnification. Toward this end, a review of the literature on microplastics has been conducted to identify factors influencing their uptake and absorption; their residence times in organisms and bioaccumulation; the physical effects of their aggregation in gastrointestinal tracts; and their potential to act as vectors for the transfer of other contaminants...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440932/microplastics-in-a-freshwater-environment-receiving-treated-wastewater-effluent
#10
Steven Lasee, Jessica Mauricio, William A Thompson, Adcharee Karnjanapiboonwong, John Kasumba, Seenivasan Subbiah, Audra N Morse, Todd A Anderson
Small plastic fragments (microplastics or solid particles <5 mm in size or "microbeads" used in personal care products and cosmetics) may ultimately find their way into aquatic environments. We studied the presence of microplastics (particle sizes 53-105 μm and 106-179 μm) spatially and temporally in 3 connected urban lakes being fed by treated wastewater effluent in Lubbock, Texas. These lakes also serve as drainage during storm events. Water samples from drainage playa wetlands within the city were also collected...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440931/microplastics-as-vectors-for-environmental-contaminants-exploring-sorption-desorption-and-transfer-to-biota
#11
Nanna B Hartmann, Sinja Rist, Julia Bodin, Louise Hs Jensen, Stine N Schmidt, Philipp Mayer, Anders Meibom, Anders Baun
The occurrence and effects of microplastics (MPs) in the aquatic environment are receiving increasing attention. In addition to their possible direct adverse effects on biota, the potential role of MPs as vectors for hydrophobic organic chemicals (HOCs), compared to natural pathways, is a topic of much debate. It is evident, however, that temporal and spatial variations of MP occurrence do (and will) occur. To further improve the estimations of the role of MPs as vectors for HOC transfer into biota under varying MP concentrations and environmental conditions, it is important to identify and understand the governing processes...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440929/marine-and-freshwater-microplastic-research-in-south-africa
#12
Carina Verster, Karin Minnaar, Hindrik Bouwman
South Africa has a vibrant plastics manufacturing industry, but recycling is limited and insufficient with a notable proportion of the unmanaged waste entering the environment. South Africa is a developing country with microplastics research in its inception. Very little is known about freshwater microplastics, and studies on South African marine microplastics are limited but actively being pursued. In a water-scarce country, protection of freshwater resources remains a priority, but in the face of other socioeconomic issues (poverty, unemployment, and HIV/AIDS), it receives insufficiently effective attention...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28438663/acute-effects-of-amitriptyline-on-adult-zebrafish-potential-relevance-to-antidepressant-drug-screening-and-modeling-human-toxidromes
#13
Konstantin A Demin, Tatiana O Kolesnikova, Sergey L Khatsko, Darya M Meshalkina, Evgeniya V Efimova, Yuri Yu Morzherin, Allan V Kalueff
The need to develop novel antidepressants is an emerging problem in biomedicine. An aquatic vertebrate species, the zebrafish (Danio rerio) may serve as a useful in-vivo screen for CNS drugs, and displays high sensitivity to a wide range of antidepressants. Amitriptyline is a commonly used tricyclic antidepressant which acts primarily as a serotonin and noradrenaline reuptake inhibitor. Here, we characterize drug-induced behavioral and neurochemical responses in adult zebrafish following their acute exposure to amitriptyline...
April 21, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28438432/the-weight-of-unfinished-plate-a-survey-based-characterization-of-restaurant-food-waste-in-chinese-cities
#14
Ling-En Wang, Gang Liu, Xiaojie Liu, Yao Liu, Jun Gao, Bin Zhou, Si Gao, Shengkui Cheng
Consumer food waste has attracted increasing public, academic, and political attention in recent years, due to its adverse resource, environmental, and socioeconomic impacts. The scales and patterns of consumer food waste, especially in developing countries, however, remain poorly understood, which may hinder the global effort of reducing food waste. In this study, based on a direct weighing method and a survey of 3557 tables in 195 restaurants in four case cities, we investigated the amount and patterns of restaurant food waste in China in 2015...
April 21, 2017: Waste Management
https://www.readbyqxmd.com/read/28437785/the-retina-of-asian-and-african-elephants-comparison-of-newborn-and-adult
#15
Heidrun Kuhrt, Andreas Bringmann, Wolfgang Härtig, Gudrun Wibbelt, Leo Peichl, Andreas Reichenbach
Elephants are precocial mammals that are relatively mature as newborns and mobile shortly after birth. To determine whether the retina of newborn elephants is capable of supporting the mobility of elephant calves, we compared the retinal structures of 2 newborn elephants (1 African and 1 Asian) and 2 adult animals of both species by immunohistochemical and morphometric methods. For the first time, we present here a comprehensive qualitative and quantitative characterization of the cellular composition of the newborn and the adult retinas of 2 elephant species...
April 25, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28437745/comparative-study-of-the-effects-of-gadolinium-chloride-and-gadolinium-based-magnetic-resonance-imaging-contrast-agent-on-freshwater-mussel-dreissena-plymorpha
#16
Houda Hanana, Patrice Turcotte, Chantale André, Christian Gagnon, François Gagné
Gadolinium (Gd), a metal of the lanthanide series used in various industrial and medical purposes is released into the aquatic environment. However, there are few aquatic toxicological studies addressing environmental effects of Gd which remains unknown in aquatic animals. Therefore, this study aimed to compare the effects of GdCl3 and a gadolinium-based MRI contrast agent (Omniscan), in zebra mussels after 28 days through a multibiomarker approach. Data revealed that after GdCl3 exposure, the mRNA level of metallothionein (MT) was modulated, those of cytochrome c oxidase (CO1) and superoxide dismutase (SOD) were increased, while gene expressions of catalase (CAT) and glutathione-S-transferase (GST) were downregulated...
April 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28437743/eco-pharmacovigilance-of-non-steroidal-anti-inflammatory-drugs-necessity-and-opportunities
#17
REVIEW
Bing-Shu He, Jun Wang, Juan Liu, Xia-Min Hu
Eco-pharmacovigilance (EPV) is a practical and powerful approach to minimize the potential risks posed by pharmaceutical residues in environment. However, it is impracticable to practise rigorous and unitary EPV process for all the existing and new pharmaceuticals. Here, we focused on non-steroidal anti-inflammatory drugs (NSAIDs), and discussed the necessity and potential opportunities of practising EPV of NSAIDs. We found that the consumption of NSAIDs is huge and ubiquitous across the globe. NSAIDs were worldwidely reported as one of the most dominant and frequently detected groups in environmental matrices including wastewater, surface water, suspended solids, sediments, groundwater, even drinking water...
April 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28437695/fe-iii-promoted-transformation-of-%C3%AE-lactam-antibiotics-hydrolysis-vs-oxidation
#18
Jiabin Chen, Ying Wang, Yajie Qian, Tianyin Huang
The widely used β-lactam antibiotics are susceptible to oxidative and/or hydrolytic degradation promoted by some metal ions (e.g., Cu(II)). Ferric ions (Fe(III)) are among the most common metal ions, but their role in the environmental transformation and fate of β-lactam antibiotics is still unknown. This study elucidates that Fe(III) can promote degradation of β-lactam antibiotics under environmental aquatic conditions. Degradation rate constants of ampicillin (AMP) linearly increased with increasing Fe(III) concentration, but were independent of AMP concentration when AMP was higher than Fe(III) concentration...
April 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28437657/toxicity-and-bioaccumulation-of-three-hexabromocyclododecane-diastereoisomers-in-the-marine-copepod-tigriopus-japonicas
#19
Haizheng Hong, Dongmei Lv, Wanxin Liu, Lingming Huang, Leyun Chen, Rong Shen, Dalin Shi
The three major hexabromocyclododecane (HBCD) diastereoisomers, i.e. α-, β- and γ-HBCD, have distinct physical and chemical properties that may potentially result in different levels of bioaccumulation and toxicity in aquatic organisms. To assess the impact of diastereomeric variation in HBCDs, the marine copepod Tigriopus japonicus was exposed to α-, β- and γ-HBCD in isolation. Results showed that all the three diastereoisomers had a similar potency to cause growth delay in T. japonicas. Variation was observed in the overall survival rate with exposure to α- and β-HBCD, and this resulted in significantly higher lethal toxicity in T...
April 18, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28437439/landscape-and-environmental-influences-on-mycobacterium-ulcerans-distribution-among-aquatic-sites-in-ghana
#20
Shannon M Pileggi, Heather Jordan, Julie A Clennon, Ellen Whitney, M Eric Benbow, Richard Merritt, Mollie McIntosh, Ryan Kimbirauskas, Pamela Small, Daniel Boakye, Charles Quaye, Jiaguo Qi, Lindsay Campbell, Jenni Gronseth, Edwin Ampadu, William Opare, Lance A Waller
Buruli ulcer, caused by Mycobacterium ulcerans, is highly endemic in West Africa. While the mode of transmission is unknown, many studies associate Buruli ulcer with different types of water exposure. We present results from the largest study to date to test for M. ulcerans in aquatic sites and identify environmental attributes associated with its presence. Environmental samples from 98 aquatic sites in the Greater Accra, Ashanti, and Volta regions of Ghana were tested for the presence of M. ulcerans DNA by polymerase chain reaction...
2017: PloS One
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