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https://www.readbyqxmd.com/read/27926921/schistosoma-mansoni-infection-can-jeopardize-the-duration-of-protective-levels-of-antibody-responses-to-immunizations-against-hepatitis-b-and-tetanus-toxoid
#1
Diana K Riner, Eric M Ndombi, Jennifer M Carter, Amos Omondi, Nupur Kittur, Emmy Kavere, Harrison K Korir, Briana Flaherty, Diana Karanja, Daniel G Colley
BACKGROUND: Schistosomiasis is a disease of major public health importance in sub-Saharan Africa. Immunoregulation begins early in schistosome infection and is characterized by hyporesponsiveness to parasite and bystander antigens, suggesting that a schistosome infection at the time of immunization could negatively impact the induction of protective vaccine responses. This study examined whether having a Schistosoma mansoni infection at the time of immunization with hepatitis B and tetanus toxoid (TT) vaccines impacts an individual's ability to achieve and maintain protective antibody levels against hepatitis B surface antigen or TT...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27925059/first-isolation-of-dioctophyme-renale-eggs-from-an-urban-environment-and-identification-of-those-from-animal-urine
#2
Soliane Carra Perera, Gabriela de Almeida Capella, Natália Berne Pinto, Josaine Cristina da Silva Rappeti, Gertrud Müller, Rosaria Helena Machado Azambuja, Claudia Giordani, Marlete Brum Cleff
Dioctophyme renale is a zoonotic parasite with worldwide distribution, although its occurrence is little known. The objective here was to evaluate the presence of parasite eggs in the environment and in the urine of dogs and cats in an urban area. Soil samples and urine were evaluated respectively by means of the Caldwell-Caldwell technique and urinalysis. Out of the 100 soil samples, 3% presented D. renale eggs, and out of the 43 urine samples, 18.6% were positive, including the feline samples. Thus, D. renale eggs are present in the urban environment, and dogs and cats are parasitized by this nematode, which therefore represents a risk to public health...
December 1, 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27924816/an-analysis-of-human-exposure-to-trace-elements-from-deliberate-soil-ingestion-and-associated-health-risks
#3
Veronica M Ngole-Jeme, Georges-Ive E Ekosse, Sandile P Songca
Fifty-seven samples of soils commonly ingested in South Africa, Swaziland, Democratic Republic of Congo (DRC), and Togo were analyzed for the concentrations of arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni), and zinc (Zn) and their bioaccessibility in the human gastrointestinal tract. Bioaccessibility values were used to calculate daily intake, and hazard quotient of each trace element, and chronic hazard index (CHI) of each sample. Carcinogenic risk associated with As and Ni exposure were also calculated...
December 7, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/27924118/native-halo-tolerant-plant-growth-promoting-rhizobacteria-enterococcus-and-pantoea-sp-improve-seed-yield-of-mungbean-vigna-radiata-l-under-soil-salinity-by-reducing-sodium-uptake-and-stress-injury
#4
Meenu Panwar, Rupinder Tewari, Harsh Nayyar
The beneficial microbial-plant interaction plays important role in the soil health, crop growth and productivity. Plant growth promoting rhizobacteria (PGPR) are such beneficial microorganisms, which in association with plant roots not only promote their growth but also help in counteracting the detrimental effects of soil stresses. Salt stress is one such stress, frequently confronted by the plants. The present study aimed at isolation and identification of PGPR inhabiting the mungbean rhizosphere, testing them for salt (NaCl) tolerance and subsequently in salt-supplemented mungbean crop...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27923546/the-challenges-of-anaerobic-digestion-and-the-role-of-biochar-in-optimizing-anaerobic-digestion
#5
REVIEW
Michael O Fagbohungbe, Ben M J Herbert, Lois Hurst, Cynthia N Ibeto, Hong Li, Shams Q Usmani, Kirk T Semple
Biochar, like most other adsorbents, is a carbonaceous material, which is formed from the combustion of plant materials, in low-zero oxygen conditions and results in a material, which has the capacity to sorb chemicals onto its surfaces. Currently, research is being carried out to investigate the relevance of biochar in improving the soil ecosystem, digestate quality and most recently the anaerobic digestion process. Anaerobic digestion (AD) of organic substrates provides both a sustainable source of energy and a digestate with the potential to enhance plant growth and soil health...
December 3, 2016: Waste Management
https://www.readbyqxmd.com/read/27923379/schoolgirls-experience-and-appraisal-of-menstrual-absorbents-in-rural-uganda-a-cross-sectional-evaluation-of-reusable-sanitary-pads
#6
Julie Hennegan, Catherine Dolan, Maryalice Wu, Linda Scott, Paul Montgomery
BACKGROUND: Governments, multinational organisations, and charities have commenced the distribution of sanitary products to address current deficits in girls' menstrual management. The few effectiveness studies conducted have focused on health and education outcomes but have failed to provide quantitative assessment of girls' preferences, experiences of absorbents, and comfort. Objectives of the study were, first, to quantitatively describe girls' experiences with, and ratings of reliability and acceptability of different menstrual absorbents...
December 7, 2016: Reproductive Health
https://www.readbyqxmd.com/read/27923048/contribution-of-wastewater-irrigation-to-soil-transmitted-helminths-infection-among-vegetable-farmers-in-kumasi-ghana
#7
Isaac Dennis Amoah, Amina Abubakari, Thor Axel Stenström, Robert Clement Abaidoo, Razak Seidu
Wastewater irrigation is associated with several benefits but can also lead to significant health risks. The health risk for contracting infections from Soil Transmitted Helminths (STHs) among farmers has mainly been assessed indirectly through measured quantities in the wastewater or on the crops alone and only on a limited scale through epidemiological assessments. In this study we broadened the concept of infection risks in the exposure assessments by measurements of the concentration of STHs both in wastewater used for irrigation and the soil, as well as the actual load of STHs ova in the stool of farmers and their family members (165 and 127 in the wet and dry seasons respectively) and a control group of non-farmers (100 and 52 in the wet and dry seasons, respectively)...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27918573/benchmarking-the-cost-per-person-of-mass-treatment-for-selected-neglected-tropical-diseases-an-approach-based-on-literature-review-and-meta-regression-with-web-based-software-application
#8
Christopher Fitzpatrick, Fiona M Fleming, Matthew Madin-Warburton, Timm Schneider, Filip Meheus, Kingsley Asiedu, Anthony W Solomon, Antonio Montresor, Gautam Biswas
BACKGROUND: Advocacy around mass treatment for the elimination of selected Neglected Tropical Diseases (NTDs) has typically put the cost per person treated at less than US$ 0.50. Whilst useful for advocacy, the focus on a single number misrepresents the complexity of delivering "free" donated medicines to about a billion people across the world. We perform a literature review and meta-regression of the cost per person per round of mass treatment against NTDs. We develop a web-based software application (https://healthy...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27916820/biological-control-beneath-the-feet-a-review-of-crop-protection-against-insect-root-herbivores
#9
REVIEW
Alan Kergunteuil, Moe Bakhtiari, Ludovico Formenti, Zhenggao Xiao, Emmanuel Defossez, Sergio Rasmann
Sustainable agriculture is certainly one of the most important challenges at present, considering both human population demography and evidence showing that crop productivity based on chemical control is plateauing. While the environmental and health threats of conventional agriculture are increasing, ecological research is offering promising solutions for crop protection against herbivore pests. While most research has focused on aboveground systems, several major crop pests are uniquely feeding on roots. We here aim at documenting the current and potential use of several biological control agents, including micro-organisms (viruses, bacteria, fungi, and nematodes) and invertebrates included among the macrofauna of soils (arthropods and annelids) that are used against root herbivores...
November 29, 2016: Insects
https://www.readbyqxmd.com/read/27915187/dose-response-models-and-a-quantitative-microbial-risk-assessment-framework-for-the-mycobacterium-avium-complex-that-account-for-recent-developments-in-molecular-biology-taxonomy-and-epidemiology
#10
REVIEW
Kerry A Hamilton, Mark H Weir, Charles N Haas
Mycobacterium avium complex (MAC) is a group of environmentally-transmitted pathogens of great public health importance. This group is known to be harbored, amplified, and selected for more human-virulent characteristics by amoeba species in aquatic biofilms. However, a quantitative microbial risk assessment (QMRA) has not been performed due to the lack of dose response models resulting from significant heterogeneity within even a single species or subspecies of MAC, as well as the range of human susceptibilities to mycobacterial disease...
November 24, 2016: Water Research
https://www.readbyqxmd.com/read/27915048/protective-effects-of-green-tea-and-its-main-constituents-against-natural-and-chemical-toxins-a-comprehensive-review
#11
REVIEW
Maryam Rameshrad, Bibi Marjan Razavi, Hossein Hosseinzadeh
Toxins are natural or chemical poisonous substances with severe side effects on health. Humans are generally exposed by widespread toxic contaminations via air, soil, water, food, fruits and vegetables. Determining a critical antidote agent with extensive effects on different toxins is an ultimate goal for all toxicologists. Traditional medicine is currently perceived as a safe and natural approach against toxins. In this regard, we focused on the protective effects of green tea (Camellia sinensis) and its main components such as catechin, epicatechin, epicatechin gallate, gallocatechin, epigallocatechin and epigallocatechin gallate as a principal source of antioxidants against both natural and chemical toxins...
November 30, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27914859/fine-and-ultrafine-atmospheric-particulate-matter-at-a-multi-influenced-urban-site-physicochemical-characterization-mutagenicity-and-cytotoxicity
#12
Yann Landkocz, Frédéric Ledoux, Véronique André, Fabrice Cazier, Paul Genevray, Dorothée Dewaele, Perrine J Martin, Capucine Lepers, Anthony Verdin, Lucie Courcot, Saâd Boushina, François Sichel, Maurizio Gualtieri, Pirouz Shirali, Dominique Courcot, Sylvain Billet
Particulate Matter (PM) air pollution is one of the major concerns for environment and health. Understanding the heterogeneity and complexity of fine and ultrafine PM is a fundamental issue notably for the assessment of PM toxicological effects. The aim of this study was to evaluate mutagenicity and cytotoxicity of a multi-influenced urban site PM, with or without the ultrafine fraction. For this purpose, PM2.5-0.3 (PM with aerodynamic diameter ranging from 0.3 to 2.5 μm) and PM2.5 were collected in Dunkerque, a French coastal industrial city and were extensively characterized for their physico-chemical properties, including inorganic and organic species...
November 30, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27914852/a-call-to-strengthen-the-global-strategy-against-schistosomiasis-and-soil-transmitted-helminthiasis-the-time-is-now
#13
REVIEW
Nathan C Lo, David G Addiss, Peter J Hotez, Charles H King, J Russell Stothard, Darin S Evans, Daniel G Colley, William Lin, Jean T Coulibaly, Amaya L Bustinduy, Giovanna Raso, Eran Bendavid, Isaac I Bogoch, Alan Fenwick, Lorenzo Savioli, David Molyneux, Jürg Utzinger, Jason R Andrews
In 2001, the World Health Assembly (WHA) passed the landmark WHA 54.19 resolution for global scale-up of mass administration of anthelmintic drugs for morbidity control of schistosomiasis and soil-transmitted helminthiasis, which affect more than 1·5 billion of the world's poorest people. Since then, more than a decade of research and experience has yielded crucial knowledge on the control and elimination of these helminthiases. However, the global strategy has remained largely unchanged since the original 2001 WHA resolution and associated WHO guidelines on preventive chemotherapy...
November 30, 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27914350/phosphorus-flows-in-a-peri-urban-region-with-intensive-food-production-a-case-study
#14
S Bittman, S C Sheppard, D Poon, D E Hunt
Excess phosphorus (P) in peri-urban regions is an emerging issue, whereas there is global depletion of quality mined supplies of P. The flow of P across the landscape leading to regional surpluses and deficits is not well understood. We computed a regional P budget with internal P flows in a fairly discreet peri-urban region (Lower Fraser Valley, BC) with closely juxtaposed agricultural and non-agricultural urban ecosystems, in order to clarify the relationship between food production, food consumption and other activities involving use of P (e...
November 30, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27913413/new-arsenate-reductase-gene-arra-pcr-primers-for-diversity-assessment-and-quantification-in-environmental-samples
#15
Babur S Mirza, Darwin L Sorensen, R Ryan Dupont, Joan E McLean
: The extent of arsenic contamination in drinking water and its potential threat to human health have resulted in considerable research interest in the microbial species responsible for arsenic reduction. The arsenate reductase gene (arrA), an important component of the microbial arsenate reduction system, has been widely used as a biomarker to study arsenate reducing microorganisms. A new primer pair was designed and evaluated for qPCR and high-throughput sequencing of the arrA gene, because currently available PCR primers are not suitable for these applications...
December 2, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27913018/potential-impact-of-flowback-water-from-hydraulic-fracturing-on-agricultural-soil-quality-metal-metalloid-bioaccessibility-microtox-bioassay-and-enzyme-activities
#16
Season S Chen, Yuqing Sun, Daniel C W Tsang, Nigel J D Graham, Yong Sik Ok, Yujie Feng, Xiang-Dong Li
Hydraulic fracturing has advanced the development of shale gas extraction, while inadvertent spills of flowback water may pose a risk to the surrounding environment due to its high salt content, metals/metalloids (As, Se, Fe and Sr), and organic additives. This study investigated the potential impact of flowback water on four representative soils from shale gas regions in Northeast China using synthetic flowback solutions. The compositions of the solutions were representative of flowback water arising at different stages after fracturing well establishment...
November 29, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27909293/major-losses-of-nutrients-following-a-severe-drought-in-a-boreal-forest
#17
Daniel Houle, Geneviève Lajoie, Louis Duchesne
Because of global warming, the frequency and severity of droughts are expected to increase, which will have an impact on forest ecosystem health worldwide(1). Although the impact of drought on tree growth and mortality is being increasingly documented(2-4), very little is known about the impact on nutrient cycling in forest ecosystems. Here, based on long-term monitoring data, we report nutrient fluxes in a boreal forest before, during and following a severe drought in July 2012. During and shortly after the drought, we observed high throughfall (rain collected below the canopy) concentrations of nutrient base cations (potassium, calcium and magnesium), chlorine, phosphorus and dissolved organic carbon (DOC), differing by one to two orders of magnitude relative to the long-term normal, and resulting in important canopy losses...
November 28, 2016: Nature Plants
https://www.readbyqxmd.com/read/27904880/microbial-community-patterns-associated-with-automated-teller-machine-keypads-in-new-york-city
#18
Holly M Bik, Julia M Maritz, Albert Luong, Hakdong Shin, Maria Gloria Dominguez-Bello, Jane M Carlton
In densely populated urban environments, the distribution of microbes and the drivers of microbial community assemblages are not well understood. In sprawling metropolitan habitats, the "urban microbiome" may represent a mix of human-associated and environmental taxa. Here we carried out a baseline study of automated teller machine (ATM) keypads in New York City (NYC). Our goal was to describe the biodiversity and biogeography of both prokaryotic and eukaryotic microbes in an urban setting while assessing the potential source of microbial assemblages on ATM keypads...
November 2016: MSphere
https://www.readbyqxmd.com/read/27902938/functional-components-of-the-bacterial-czccba-efflux-system-reduce-cadmium-uptake-and-accumulation-in-transgenic-tobacco-plants
#19
Andrea Nesler, Giovanni DalCorso, Elisa Fasani, Anna Manara, Gian Pietro Di Sansebastiano, Emanuele Argese, Antonella Furini
Cadmium (Cd) is a toxic trace element released into the environment by industrial and agricultural practices, threatening the health of plants and contaminating the food/feed chain. Biotechnology can be used to develop plant varieties with a higher capacity for Cd accumulation (for use in phytoremediation programs) or a lower capacity for Cd accumulation (to reduce Cd levels in food and feed). Here we generated transgenic tobacco plants expressing components of the Pseudomonas putida CzcCBA efflux system. Plants were transformed with combinations of the CzcC, CzcB and CzcA genes, and the impact on Cd mobilization was analysed...
November 27, 2016: New Biotechnology
https://www.readbyqxmd.com/read/27899920/impacts-of-fertilization-regimes-on-arbuscular-mycorrhizal-fungal-amf-community-composition-were-correlated-with-organic-matter-composition-in-maize-rhizosphere-soil
#20
Chen Zhu, Ning Ling, Junjie Guo, Min Wang, Shiwei Guo, Qirong Shen
The understanding of the response of arbuscular mycorrhizal fungi (AMF) community composition to fertilization is of great significance in sustainable agriculture. However, how fertilization influences AMF diversity and composition is not well-established yet. A field experiment located in northeast China in typical black soil (Chernozem) was conducted and high-throughput sequencing approach was used to investigate the effects of different fertilizations on the variation of AMF community in the rhizosphere soil of maize crop...
2016: Frontiers in Microbiology
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