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https://www.readbyqxmd.com/read/28524101/development-of-a-lc-ms-ms-method-for-the-multi-mycotoxin-determination-in-composite-cereal-based-samples
#1
Barbara De Santis, Francesca Debegnach, Emanuela Gregori, Simona Russo, Francesca Marchegiani, Gabriele Moracci, Carlo Brera
The analytical scenario for determining contaminants in the food and feed sector is constantly prompted by the progress and improvement of knowledge and expertise of researchers and by the technical innovation of the instrumentation available. Mycotoxins are agricultural contaminants of fungal origin occurring at all latitudes worldwide and being characterized by acute and chronic effects on human health and animal wellness, depending on the species sensitivity. The major mycotoxins of food concern are aflatoxin B1 and ochratoxin A, the first for its toxicity, and the second for its recurrent occurrence...
May 18, 2017: Toxins
https://www.readbyqxmd.com/read/28516389/microenvironmental-scenario-of-the-bone-marrow-of-inorganic-arsenic-exposed-experimental-mice
#2
Jacintha Archana Pereira, Sujata Law
Exposure to arsenic on a regular basis, mainly through drinking water, agricultural pesticide, and sometimes therapeutic dose, results in various diseases of different tissues including the bone marrow hematopoietic system. Hematopoiesis is a dynamic process by which bone marrow (BM) hematopoietic stem/progenitor cells (HSPCs) generate a relatively constant pool of functionally mature blood cells by the support of microenvironmental components. The present study has been aimed to understand stem cell microenvironmental status during arsenic toxicity and the consequent reflection of dysregulation involving the hematopoietic machinery in experimental mice...
May 17, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28513456/aflatoxins-characteristics-and-impact-on-human-health
#3
Anna Kowalska, Katarzyna Walkiewicz, Paweł Kozieł, Małgorzata Muc-Wierzgoń
Some molds commonly occurring in the natural environment produce mycotoxins in the process of secondary metabolism. Aspergillus flavus and A. parasiticus are species of molds, which are responsible for the production of aflatoxins and are crucial in the pathogenesis of human diseases. Aspergillus species present in decaying plants, the soil and their spores are transferred via air currents and insects to crops and food storages. Aflatoxins B1, B2, G1, G2, M1 and M2 are the most common derivatives of aflatoxins...
May 5, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28512369/-nanopesticides-light-or-dark-side-of-the-force
#4
REVIEW
Magdalena Matysiak, Marcin Kruszewski, Lucyna Kapka-Skrzypczak
Nanotechnology has been used in many branches of industry, including agriculture, where nanomaterials are used as carriers of chemical plant protection compounds, as well as active ingredients. Meanwhile, the effects of nanopesticides exposure on the human body are unknown. Due to their occupation, farmers should be particularly monitored. This paper summarizes the use of nanoparticles in agriculture, the route of potential exposure for agricultural workers and the current state of knowledge of nanopesticides toxicity to mammalian cells...
May 16, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28512016/mechanism-of-action-of-amp-jsa9-a-li-f-type-antimicrobial-peptide-produced-by-paenibacillus-polymyxa-jsa-9-against-fusarium-moniliforme
#5
Jinzhi Han, Fang Wang, Peng Gao, Zhi Ma, Shengming Zhao, Zhaoxin Lu, Fengxia Lv, Xiaomei Bie
LI-F type peptides (AMP-jsa9) are a group of cyclic lipodepsipeptides that exhibit broad antimicrobial spectrum against Gram-positive bacteria and filamentous fungi. We sought to assess the toxicity of AMP-jsa9 and the mechanism of AMP-jsa9 action against Fusarium moniliforme. AMP-jsa9 exhibited weak hemolytic activity and weak cytotoxicity at antimicrobial concentrations (32 μg/ml). Confocal laser microscopy, SEM, and TEM indicated that AMP-jsa9 primarily targets the cell wall, plasma membrane, and cytoskeleton, increases membranepermeability, and enhances cytoplasm leakage (e...
May 13, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28510421/converting-carbohydrates-to-carbon-based-photocatalysts-for-environmental-treatment
#6
Zhuofeng Hu, Zhurui Shen, Jimmy Chai Mei Yu
Carbohydrates in biomass can be converted to semiconductive hydrothermal carbonation carbon (HTCC), a material that contains plenty of sp2-hybridization structures. Under solar light illumination, HTCC generates photoexcited electrons, holes and hydroxyl radicals. These species can be used for photocatalytic treatment such as water disinfection and degradation of organic pollutants. The photocatalytic activity of HTCC can be significantly enhanced by iodine doping. The enhancement mechanism is investigated by density functional theoretical calculations and electrochemical measurements...
May 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28507539/new-insight-into-inter-kingdom-communication-horizontal-transfer-of-mobile-small-rnas
#7
REVIEW
Geyu Zhou, Yu Zhou, Xi Chen
Small RNAs (sRNAs), including small interfering RNAs (siRNAs) and microRNAs (miRNAs), are conventionally regarded as critical molecular regulators of various intracellular processes. However, recent accumulating evidence indicates that sRNAs can be transferred within cells and tissues and even across species. In plants, nematodes and microbes, these mobile sRNAs can mediate inter-kingdom communication, environmental sensing, gene expression regulation, host-parasite defense and many other biological functions...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28503798/neutral-and-alkaline-cellulases-production-engineering-and-applications
#8
REVIEW
Ines Ben Hmad, Ali Gargouri
Neutral and alkaline cellulases from microorganisms constitute a major group of the industrial enzymes and find applications in various industries. Screening is the important ways to get novel cellulases. Most fungal cellulases have acidic pH optima, except some fungi like Humicola insolens species. However, new applications require the use of neutral and alkaline cellulases in food, brewery and wine, animal feed, textile and laundry, pulp and paper industries, agriculture as well in scientific research purposes...
May 15, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28502169/direct-conjugation-of-emerging-contaminants-in-arabidopsis-indication-for-an-overlooked-risk-in-plants
#9
Qiuguo Fu, Jianbo Zhang, Dan Borchardt, Daniel Schlenk, Jay J Gan
Agricultural use of treated wastewater, biosolids and animal wastes introduces a multitude of contaminants of emerging concerns (CECs) into the soil-plant system. The potential for food crops to accumulate CECs depends largely on their metabolism in plants, which at present is poorly understood. Here we evaluated the metabolism of naproxen and ibuprofen, two of the most used human drugs from the profen family, in Arabidopsis thaliana cells and Arabidopsis plant. The complementary use of high-resolution mass spectrometry and 14C labeling allowed characterization of both free and conjugated metabolites, as well as non-extractable residues...
May 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28500429/the-antibiotic-resistome-gene-flow-in-environments-animals-and-human-beings
#10
REVIEW
Yongfei Hu, George F Gao, Baoli Zhu
The antibiotic resistance is natural in bacteria and predates the human use of antibiotics. Numerous antibiotic resistance genes (ARGs) have been discovered to confer resistance to a wide range of antibiotics. The ARGs in natural environments are highly integrated and tightly regulated in specific bacterial metabolic networks. However, the antibiotic selection pressure conferred by the use of antibiotics in both human medicine and agriculture practice leads to a significant increase of antibiotic resistance and a steady accumulation of ARGs in bacteria...
May 13, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28498334/pastoralism-versus-agriculturalism-how-do-altered-land-use-forms-affect-the-spread-of-invasive-plants-in-the-degraded-mutara-rangelands-of-north-eastern-rwanda
#11
Torsten Wronski, Jean Damascene Bariyanga, Ping Sun, Martin Plath, Ann Apio
Lantana camara L. (Verbenaceae) originates from tropical Central and South America and has become invasive in about 50 countries. It causes problems when invading rangelands due to its toxicity to livestock and its tendency to form dense, monotonous thickets. Its invasiveness can partly be explained by the high tannin content largely protecting the species from being browsed, its tolerance to a wide range of environmental conditions, as well as its general preference for anthropogenically disturbed habitats...
May 12, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28494358/herbicide-effects-on-the-growth-and-photosynthetic-efficiency-of-cassiopea-maremetens
#12
David J Rowen, Michelle A Templeman, Michael J Kingsford
Herbicides from agricultural run-off have been measured in coastal systems of the Great Barrier Reef over many years. Non-target herbicide exposure, especially photosystem II herbicides has the potential to affect seagrasses and other marine species. The symbiotic benthic jellyfish Cassiopea maremetens is present in tropical/sub-tropical estuarine and marine environments. Jellyfish (n = 8 per treatment) were exposed to four separate concentrations of agricultural formulations of diuron or hexazinone to determine their sensitivity and potential for recovery to pulsed herbicide exposure...
May 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/28492313/size-composition-and-source-profiles-of-inhalable-bioaerosols-from-colorado-dairies
#13
Joshua Schaeffer, Stephen J Reynolds, Sheryl Magzamen, Amanda VanDyke, Neil Gottel, Jack Gilbert, Sarah Owens, Jarrad T Hampton-Marcell, John Volckens
Particulate matter emissions from agricultural livestock operations contain both chemical and biological constituents that represent a potential human health hazard. The size and composition of these dusts, however, have not been well described. We evaluated the full size distribution (from 0 to 100 μm in aerodynamic diameter) and chemical/biological composition of inhalable dusts inside several Colorado dairy parlors. Four aerodynamic size fractions (<3, 3-10, 10-30, and >30μm) were collected and analyzed using a combination of physiochemical techniques to understand the structure of bacterial communities and chemical constituents...
May 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28489929/a-content-analysis-of-nature-photographs-taken-by-lebanese-rural-youth
#14
Miriam Mattouk, Salma N Talhouk
'Living in Harmony with Nature' is a 2050 vision put forth by the Convention on Biological Diversity (CBD) which takes into consideration culture and locality of perceptions of nature and aspirations for its use. Considering that 54% of the world population lives in cities, where nature has been decimated, the role of rural communities, living within or in proximity of natural and semi natural areas, will effectively influence the fate of the 'remaining' nature while they engage in local development. Reconciling between growth and development on the one hand, and nature conservation on the other, necessitates an understanding of how rural communities, especially the youth, imprint their own ideas on landscapes and develop ownership over natural spaces...
2017: PloS One
https://www.readbyqxmd.com/read/28487232/potential-contribution-of-insecticide-exposure-and-development-of-obesity-and-type-2-diabetes
#15
REVIEW
Xiao Xiao, John M Clark, Yeonhwa Park
The introduction of insecticides has greatly improved agricultural productivity and human nutrition; however, the wide use of insecticides has also sparked growing concern over their health impacts. Increased rate of cancers, neurodegenerative disorders, reproductive dysfunction, birth defects, respiratory diseases, cardiovascular diseases and aging have been linked with insecticide exposure. Meanwhile, a growing body of evidence is suggesting that exposure to insecticides can also potentiate the risk of obesity and type 2 diabetes...
May 6, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28486516/immortalization-of-chicken-preadipocytes-by-retroviral-transduction-of-chicken-tert-and-tr
#16
Wei Wang, Tianmu Zhang, Chunyan Wu, Shanshan Wang, Yuxiang Wang, Hui Li, Ning Wang
The chicken is an important agricultural animal and model for developmental biology, immunology and virology. Excess fat accumulation continues to be a serious problem for the chicken industry. However, chicken adipogenesis and obesity have not been well investigated, because no chicken preadipocyte cell lines have been generated thus far. Here, we successfully generated two immortalized chicken preadipocyte cell lines through transduction of either chicken telomerase reverse transcriptase (chTERT) alone or in combination with chicken telomerase RNA (chTR)...
2017: PloS One
https://www.readbyqxmd.com/read/28484633/predictors-and-immunological-correlates-of-sublethal-mercury-exposure-in-vampire-bats
#17
Daniel J Becker, Matthew M Chumchal, Alexandra B Bentz, Steven G Platt, Gábor Á Czirják, Thomas R Rainwater, Sonia Altizer, Daniel G Streicker
Mercury (Hg) is a pervasive heavy metal that often enters the environment from anthropogenic sources such as gold mining and agriculture. Chronic exposure to Hg can impair immune function, reducing the ability of animals to resist or recover from infections. How Hg influences immunity and susceptibility remains unknown for bats, which appear immunologically distinct from other mammals and are reservoir hosts of many pathogens of importance to human and animal health. We here quantify total Hg (THg) in hair collected from common vampire bats (Desmodus rotundus), which feed on blood and are the main reservoir hosts of rabies virus in Latin America...
April 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28483729/presence-of-parasites-in-environmental-waters-in-samsun-and-its-districts
#18
Ülkü Karaman, Zeynep Kolören, Onuralp Seferoğlu, Emine Ayaz, Elif Demirel
OBJECTIVE: The aim of this study was to detect the presence of parasites in environmental waters in Samsun and its districts. METHODS: At the center of Samsun, 13 stations were determined. The research was performed between March 2012 and February 2013, and every month, water samples were collected on the dates stated. The samples were stained with Kinyoun acid-fast, modified trichrome, and trichrome dyes after examining with the direct bond. The preparations were evaluated in terms of parasitologic under a light microscope...
March 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28482307/fate-of-antibiotics-in-soil-and-their-uptake-by-edible-crops
#19
REVIEW
Min Pan, L M Chu
Antibiotics are bioactive substances, and their use as human and animal medicines for illness prevention, disease treatment and growth promotion has increased in recent decades. They are excreted, either unchanged or metabolized, and are discharged to the environment through animal manure, municipal wastewater or biosolids. Consequently, these chemicals reach cropland, which is advocated as a means of recycling. As these drugs are used in escalating quantities, there is growing concern over their presence, toxicity and fate in the soil, which may pose adverse effects on plant growth and productivity, as well as result in their uptake and accumulation in crops...
May 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28482305/virtual-water-trade-of-agri-food-products-evidence-from-italian-chinese-relations
#20
Lucrezia Lamastra, Pier Paolo Miglietta, Pierluigi Toma, Federica De Leo, Stefania Massari
At global scale, the majority of world water withdrawal is for the agricultural sector, with differences among countries depending on the relevance of agri-food sector in the economy. Virtual water and water footprint could be useful to express the impact on the water resources of each production process and good with the objective to lead to a sustainable use of water at a global level. International trade could be connected to the virtual water flows, in fact through commodities importation, water poor countries can save their own water resources...
May 5, 2017: Science of the Total Environment
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