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https://www.readbyqxmd.com/read/28550806/lettuce-facing-microcystins-rich-irrigation-water-at-different-developmental-stages-effects-on-plant-performance-and-microcystins-bioaccumulation
#1
Efi Levizou, George Statiris, Theodoti Papadimitriou, Chrysi S Laspidou, Konstantinos Ar Kormas
This study investigated the microcystins (MCs)-rich irrigation water effect on lettuce of different developmental stages, i.e. during a two months period, covering the whole period from seed germination to harvest at marketable size of the plant. We followed four lettuce plant groups receiving MCs-rich water (1.81μgl(-1) of dissolved MCs), originating from the Karla Reservoir, central Greece: 1) from seeds, 2) the cotyledon, 3) two true leaves and 4) four true leaves stages, all of which were compared to control plants that received tap water...
May 24, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28550681/antibiotic-associated-manipulation-of-the-gut-microbiota-and-phenotypic-restoration-in-nod-mice
#2
James R Fahey, Bonnie L Lyons, Haiyan L Olekszak, Anthony J Mourino, Jeremy J Ratiu, Jeremy J Racine, Harold D Chapman, David V Serreze, Dina L Baker, N Ken Hendrix
Segmented filamentous bacterium (SFB) a gram-positive, anaerobic, and intestinal commensal organism directly influencesthe development of Th17 helper cells in the small intestine of mice. In NOD mice, SFB colonization interferes with the developmentof type 1 diabetes (T1D), a T-cell-mediated autoimmune disease, suggesting that SFB may influence Th17 cells to inhibit Th1populations associated with the anti-β-cell immune response. This effect is a serious concern for investigators who use NOD micefor diabetes research because the expected incidence of disease decreases markedly when they are colonized by SFB...
May 26, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28550599/rare-earth-elements-in-street-dust-and-associated-health-risk-in-a-municipal-industrial-base-of-central-china
#3
Guangyi Sun, Zhonggen Li, Ting Liu, Ji Chen, Tingting Wu, Xinbin Feng
The content levels, distribution characteristics, and health risks associated with 15 rare earth elements (REEs) in urban street dust from an industrial city, Zhuzhou, in central China were investigated. The total REE content (∑REE) ranged from 66.1 to 237.4 mg kg(-1), with an average of 115.9 mg kg(-1), which is lower than that of Chinese background soil and Yangtze river sediment. Average content of the individual REE in street dust decreased in the order Ce > La > Nd > Y > Pr > Sm > Gd > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu...
May 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28545900/environmental-contamination-with-toxocara-spp-eggs-in-public-parks-and-playground-sandpits-of-greater-lisbon-portugal
#4
David Otero, Ana Margarida Alho, Rolf Nijsse, Jeroen Roelfsema, Paul Overgaauw, Luís Madeira de Carvalho
Toxocarosis is a zoonotic parasitic disease transmitted from companion animals to humans. Environmental contamination with Toxocara eggs is considered to be the main source of human infections. In Portugal, knowledge regarding the current situation, including density, distribution and environmental contamination by Toxocara spp., is largely unknown. The present study investigated environmental contamination with Toxocara spp. eggs, in soil and faecal samples collected from public parks and playground sandpits in Greater Lisbon, Portugal...
May 22, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28545427/advantages-and-limitations-for-users-of-double-pit-pour-flush-latrines-a-qualitative-study-in-rural-bangladesh
#5
Faruqe Hussain, Thomas Clasen, Shahinoor Akter, Victoria Bawel, Stephen P Luby, Elli Leontsini, Leanne Unicomb, Milan Kanti Barua, Brittany Thomas, Peter J Winch
BACKGROUND: In rural Bangladesh, India and elsewhere, pour-flush pit latrines are the most common sanitation system. When a single pit latrine becomes full, users must empty it themselves and risk exposure to fresh feces, pay an emptying service to remove pit contents or build a new latrine. Double pit pour-flush latrines may serve as a long-term sanitation option including high water table areas because the pits do not need to be emptied immediately and the excreta decomposes into reusable soil...
May 25, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28545213/safe-utilization-of-heavy-metal-contaminated-farmland-by-mulberry-tree-cultivation-and-silk-production
#6
Xiaoming Wan, Mei Lei, Tongbin Chen, Yongbi Tan, Junxing Yang
Heavy-metal-contaminated soil threatens human health and environmental safety. Complete remediation of contaminated soil is expensive; therefore, phytomanagement has emerged as a cost-effective alternative. The current study investigated mulberry tree (Morus alba) plantation, silkworm cultivation, and silk production as phytomanagement options. Results defined the safety of planting mulberry trees in soils with lead (Pb) and arsenic (As) concentrations lower than 369 and 180mgkg(-1), respectively. Silkworms fed with mulberry leaves collected from slightly contaminated soil exhibited productive growth and normal silk production...
May 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28543177/fingerprints-of-resistant-escherichia-coli-o157-h7-from-vegetables-and-environmental-samples
#7
G O Abakpa, V J Umoh, S Kamaruzaman, A M Ibekwe
BACKGROUND: Some routes of transmission of E. coli O157:H7 to fresh produce include contaminated irrigation water and manure polluted soils. The aim of this study was to determine the genetic relationships of E. coli O157:H7 isolated from some produce growing region in Nigeria using Enterorepititive Intergenic Consensus Deoxyribonucleic Acid Fingerprinting (ERIC-PCR) analysis. A total of four hundred and forty samples comprising leafy greens, irrigation water, manure, and soil were obtained from vegetable producing regions in Kano and Plateau States, Nigeria...
May 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28540552/application-of-ruo2-ni-foam-electrodes-for-remediation-of-ibuprofen-in-soil-matrix-the-effect-of-electrokinetic-parameters
#8
Ching Yuan, Chung-Hsuang Hung, Tzu-Yuan Huang
Pharmaceuticals and personal care products (PPCPs) are an extraordinary and diverse group of chemicals used in veterinary medicine, agriculture, and for human health and cosmetics care. They are considered emerging contaminants and have raised great concern in recent years. Among the PPCPs, ibuprofen (IBP) is one of the most known non-steroidal anti-inflammatory drugs, which has been found at a high concentration in irrigation water in the USA and showed harmful effect for organisms. This study examined IBP degradation performance by an electrokinetic process coupled with 24-96 cm(2) of RuO2/Ni foam (RN) electrodes applied 1-3 V cm(-1) potential gradient for 5-9 days...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28537034/polycyclic-aromatic-hydrocarbons-in-urban-soil-of-novi-sad-serbia-occurrence-and-cancer-risk-assessment
#9
Biljana D Škrbić, Nataša Đurišić-Mladenović, Đorđe J Tadić, Jelena Đ Cvejanov
Contents of 16 polycyclic aromatic hydrocarbons were analyzed in 30 soil samples from 15 locations in Novi Sad, Serbia, assessing for the first time the corresponding health risks in the Serbian urban zone. Total concentrations were in the range of 22-2247 μg kg(-1), with a mean and median value of 363 and 200 μg kg(-1), respectively. Comparison with the relevant maximum allowed contents proposed by the Serbian government and with the Dutch target values implied that soils from the urban area of Novi Sad were "suitable as residential soils" and that no intervention would be needed if the current levels were retained...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28536589/the-role-of-polyphenoloxidase-peroxidase-and-%C3%AE-glucosidase-in-phenolics-accumulation-in-olea-europaea-l-fruits-under-different-water-regimes
#10
Marco Cirilli, Giovanni Caruso, Clizia Gennai, Stefania Urbani, Eleonora Frioni, Maurizio Ruzzi, Maurizio Servili, Riccardo Gucci, Elia Poerio, Rosario Muleo
Olive fruits and oils contain an array of compounds that contribute to their sensory and nutritional properties. Phenolic compounds in virgin oil and olive-derived products have been proven to be highly beneficial for human health, eliciting increasing attention from the food industry and consumers. Although phenolic compounds in olive fruit and oil have been extensively investigated, allowing the identification of the main classes of metabolites and their accumulation patterns, knowledge of the molecular and biochemical mechanisms regulating phenolic metabolism remains scarce...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28536439/pesticides-in-fine-airborne-particles-from-a-green-analysis-method-to-atmospheric-characterization-and-risk-assessment
#11
Madson M Nascimento, Gisele O da Rocha, Jailson B de Andrade
The intensive use of pesticides such as herbicides, insecticides, fungicides and acaricides has been lead to ubiquitous contamination, being present not only in soils, water bodies and/or crops, but also in the atmosphere. Considering the massive amount of pesticides employed globally, together to their persistence, this may be an important concern regarding air quality and human health worldwide. In the present study we developed a green sensitive sample preparation method for determination of nine organophosphates, two pyrethroids, one carbamate, and one strobirulin in PM2...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28535806/the-past-matters-estimating-intrinsic-hookworm-transmission-intensity-in-areas-with-past-mass-drug-administration-to-control-lymphatic-filariasis
#12
Marleen Werkman, James E Truscott, Jaspreet Toor, James E Wright, Roy M Anderson
BACKGROUND: Current WHO guidelines for soil-transmitted helminth (STH) control focus on mass drug administration (MDA) targeting preschool-aged (pre-SAC) and school-aged children (SAC), with the goal of eliminating STH as a public health problem amongst children. Recently, attention and funding has turned towards the question whether MDA alone can result in the interruption of transmission for STH. The lymphatic filariasis (LF) elimination programme, have been successful in reaching whole communities...
May 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28535485/quantification-of-residual-antibiotics-in-cow-manure-being-spread-over-agricultural-land-and-assessment-of-their-behavioral-effects-on-antibiotic-resistant-bacteria
#13
Ji-Ran Yeom, Soon-Uk Yoon, Chang-Gyun Kim
Antibiotic resistant bacteria (ARB) in livestock manure used as fertilizer and spread over agriculture land, may pose a threat to the health of humans. Considering this, the concentrations of tetracycline (TC), oxytetracycline (OTC), and sulfathiazole (STZ) in the surface soil were quantified using LC-MS. These antibiotics have been used in livestock and are found in fertilizer produced from livestock excretions. Species of ABR were identified using 16S rDNA. Soil samples were collected at depths of 0, 7, and 15 cm from farmland in Incheon (South Korea)...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28533783/progress-on-azadirachta-indica-based-biopesticides-in-replacing-synthetic-toxic-pesticides
#14
REVIEW
Suman Chaudhary, Rupinder K Kanwar, Alka Sehgal, David M Cahill, Colin J Barrow, Rakesh Sehgal, Jagat R Kanwar
Over the years, extensive use of commercially available synthetic pesticides against phytophagous insects has led to their bioaccumulation in the environment causing increased resistance and reduction in soil biodiversity. Further, 90% of the applied pesticides enter the various environmental resources as a result of run-off, exposing the farmers as well as consumers of the agricultural produce to severe health issues. Therefore, growing attention has been given toward the development of alternate environmentally friendly pesticides/insecticides that would aid an efficient pest management system and also prevent chronic exposures leading to diseases...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28533770/from-vineyard-soil-to-wine-fermentation-microbiome-approximations-to-explain-the-terroir-concept
#15
REVIEW
Ignacio Belda, Iratxe Zarraonaindia, Matthew Perisin, Antonio Palacios, Alberto Acedo
Wine originally emerged as a serendipitous mix of chemistry and biology, where microorganisms played a decisive role. From these ancient fermentations to the current monitored industrial processes, winegrowers and winemakers have been continuously changing their practices according to scientific knowledge and advances. A new enology direction is emerging and aiming to blend the complexity of spontaneous fermentations with industrial safety of monitored fermentations. In this context, wines with distinctive autochthonous peculiarities have a great acceptance among consumers, causing important economic returns...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28531110/multifaceted-health-benefits-of-mangifera-indica-l-mango-the-inestimable-value-of-orchards-recently-planted-in-sicilian-rural-areas
#16
REVIEW
Marianna Lauricella, Sonia Emanuele, Giuseppe Calvaruso, Michela Giuliano, Antonella D'Anneo
Historically, Mangifera indica L. cultivations have been widely planted in tropical areas of India, Africa, Asia, and Central America. However, at least 20 years ago its spreading allowed the development of some cultivars in Sicily, an island to the south of Italy, where the favourable subtropical climate and adapted soils represent the perfect field to create new sources of production for the Sicilian agricultural supply chain. Currently, cultivations of Kensington Pride, Keitt, Glenn, Maya, and Tommy Atkins varieties are active in Sicily and their products meet the requirements of local and European markets...
May 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28528502/influence-of-amendments-on-cd-and-zn-uptake-and-accumulation-in-rice-oryza-sativa-l-in-contaminated-soil
#17
Patompong Saengwilai, Weeradej Meeinkuirt, John Pichtel, Preeyaporn Koedrith
Cadmium is a toxic metallic element that poses serious human health risks via consumption of contaminated agricultural products. The effect of mixtures of dicalcium phosphate and organic amendments, namely cow manure (MD) and leonardite (LD), on Cd and Zn uptake of three rice cultivars (KDML105, KD53, and PSL2) was examined in mesocosm experiments. Plant growth, Cd and Zn accumulation, and physicochemical properties of the test soils were investigated before and after plant harvest. Amendment application was found to improve soil physicochemical properties; in particular, soil organic matter content and nutrient (N, P, K, Ca, and Mg) concentrations increased significantly...
May 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28528420/soil-or-dust-for-health-risk-assessment-studies-in-urban-environment
#18
M Gabarrón, A Faz, J A Acosta
To identify the best material (soil or dust) to be selected for health-risk assessment studies, road dust and urban soil from three cities with different population densities were collected, and size fractions were analysed for metal content (Pb, Zn, Cu, Cd, Cr, Co, and Ni). Results showed similar distribution of the size particles among cities, predominating fractions between 75 and 2000 μm in road dust and particles below 75 μm in soil. Metals were mainly bound to PM10 in both soil and road dust increasing the risk of adverse health effects, overall through inhalation exposure...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28526789/a-novel-iron-dependent-enzyme-that-catalyzes-the-initial-step-in-the-biodegradation-of-n-nitroglycine-by-variovorax-sp-strain-js1663
#19
Kristina M Mahan, Hangping Zheng, Tekle T Fida, Ronald J Parry, David E Graham, Jim C Spain
Nitramines are key constituents of most of the explosives in current use and consequently contaminate soil and groundwater at many military facilities around the world. Toxicity from nitramine contamination poses a health risk to plants and animals, thus understanding how nitramines are biodegraded is critical to environmental remediation. The biodegradation of synthetic nitramine compounds such as hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX) has been studied for decades, but little is known about the catabolism of naturally produced nitramine compounds...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28526064/seasonal-variation-in-the-prevalence-of-toxocara-eggs-on-children-s-playgrounds-in-the-city-of-hanover-germany
#20
Annika Kleine, Andrea Springer, Christina Strube
BACKGROUND: Roundworms of the genus Toxocara are worldwide distributed zoonotic parasites of carnivores. Based on case numbers and the potential impact on human health, the Centers for Disease Control and Prevention (CDC) categorised toxocarosis as one of the most important neglected parasitic diseases. As contact with contaminated soil, e.g. in sandpits, is considered the primary transmission route, data on playground contamination are needed to assess infection risk for children. Here, playground contamination rates and their seasonal variation in the city of Hanover, Germany, were investigated...
May 19, 2017: Parasites & Vectors
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