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Biosecurity

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https://www.readbyqxmd.com/read/28438915/conservation-development-and-the-management-of-infectious-disease-avian-influenza-in-china-2004-2012
#1
Tong Wu, Charles Perrings
There is growing evidence that wildlife conservation measures have mixed effects on the emergence and spread of zoonotic disease. Wildlife conservation has been found to have both positive (dilution) and negative (contagion) effects. In the case of avian influenza H5N1 in China, the focus has been on negative effects. Lakes and wetlands attracting migrating waterfowl have been argued to be disease hotspots. We consider the implications of waterfowl conservation for H5N1 infections in both poultry and humans between 2004 and 2012...
June 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28431524/biosecurity-survey-in-relation-to-the-risk-of-hpai-outbreaks-in-backyard-poultry-holdings-in-thimphu-city-area-bhutan
#2
Tenzin Tenzin, Chador Wangdi, Purna Bdr Rai
BACKGROUND: A questionnaire survey was conducted to assess the biosecurity and other practices of backyard poultry holdings and knowledge and practices of poultry keepers following an outbreak of highly pathogenic avian influenza (H5N1) virus in poultry in Thimphu city area, Bhutan. RESULTS: The study identified 62 backyard poultry holdings in 12 settlement areas, and the owners were subsequently interviewed. The birds are kept in a low-input low-output system, fed locally available scavenging feed base, and supplemented with food scraps and some grain...
April 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28430811/antimicrobial-resistance-in-coagulase-positive-staphylococci-isolated-from-companion-animals-in-australia-a-one-year-study
#3
Sugiyono Saputra, David Jordan, Kate A Worthing, Jacqueline M Norris, Hui S Wong, Rebecca Abraham, Darren J Trott, Sam Abraham
Methicillin-resistant coagulase-positive staphylococci (CoPS) have become increasingly recognised as opportunistic pathogens that limit therapeutic options in companion animals. The frequency of methicillin resistance amongst clinical isolates on an Australia-wide level is unknown. This study determined antimicrobial susceptibility patterns for CoPS isolated from clinical infections in companion animals (dogs, cats and horses) as part of the first nation-wide survey on antimicrobial resistance in animal pathogens in Australia for a one-year period (January 2013 to January 2014)...
2017: PloS One
https://www.readbyqxmd.com/read/28429818/piscirickettsia-salmonis-infection-in-cultured-lumpfish-cyclopterus-lumpus-l
#4
M Marcos-López, N M Ruane, F Scholz, M Bolton-Warberg, S O Mitchell, S Murphy O'Sullivan, A Irwin Moore, H D Rodger
A Piscirickettsia salmonis infection was diagnosed in lumpfish (Cyclopterus lumpus L.) juveniles held in a marine research facility on the west coast of Ireland. The main clinical signs and pathology included marked ascites, severe multifocal liver necrosis and severe diffuse inflammation and necrosis of the exocrine pancreas and peri-pancreatic adipose tissue. Numerous Piscirickettsia-like organisms were observed by histopathology in the affected organs, and the bacterial species was characterized by molecular analysis...
April 21, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28428226/rapid-throughput-analysis-of-gabaa-receptor-subtype-modulators-and-blockers-using-disbac1-3-membrane-potential-red-dye
#5
Atefeh Mousavi Nik, Brandon Pressly, Vikrant Singh, Shane Antrobus, Susan Hulsizer, Michael A Rogawski, Heike Wulff, Isaac N Pessah
Fluorometric Imaging Plate Reader (FLIPR®) membrane potential dye (FMP-Red-Dye) is a proprietary tool for basic discovery and high throughput drug screening for G-protein coupled receptors and ion channels. We optimized and validated this potentiometric probe to assay functional modulators of heterologous expressed GABAA receptor (GABAAR) isoforms (synaptic α1β3γ2, extrasynaptic α4β3δ, and β3 homopentomers). High-resolution mass spectrometry identified FMP-Red-dye as DisSBAC1(3). GABAAR expressing cells equilibrated with FMP-Red-Dye exhibited depolarized equilibrium membrane (Em) potentials compared to GABAAR-null cells...
April 20, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28425465/chytrid-fungus-infection-in-zebrafish-demonstrates-that-the-pathogen-can-parasitize-non-amphibian-vertebrate-hosts
#6
Nicole Liew, Maria J Mazon Moya, Claudia J Wierzbicki, Michael Hollinshead, Michael J Dillon, Christopher R Thornton, Amy Ellison, Jo Cable, Matthew C Fisher, Serge Mostowy
Aquatic chytrid fungi threaten amphibian biodiversity worldwide owing to their ability to rapidly expand their geographical distributions and to infect a wide range of hosts. Combating this risk requires an understanding of chytrid host range to identify potential reservoirs of infection and to safeguard uninfected regions through enhanced biosecurity. Here we extend our knowledge on the host range of the chytrid Batrachochytrium dendrobatidis by demonstrating infection of a non-amphibian vertebrate host, the zebrafish...
April 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28425426/production-of-red-tilapia-oreochromis-spp-in-floating-cages-in-the-mekong-delta-vietnam-mortality-and-health-management
#7
Annette S Boerlage, Tu Thanh Dung, Tran Thi Hoa, Jeffrey Davidson, Henrik Stryhn, K Larry Hammell
The Mekong Delta in Vietnam is one of the most productive aquaculture regions in the world, in which the red tilapia (Oreochromis spp.) industry is a small-scale industry that mainly supplies local markets in the delta region. Little is known about the frequency of mortality events and health management in this sector. We describe red tilapia floating cage production systems in the Mekong Delta, Vietnam, for the purposes of quantifying mortality and associated production factors, and describing practices that may influence pathogen introduction and spread to and from farms...
April 20, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28403207/biosecurity-messages-are-lost-in-translation-to-citizens-implications-for-devolving-management-to-citizens
#8
Marnie L Campbell, Dominic E P Bryant, Chad L Hewitt
The increasing focus of marine biosecurity agencies on transferring management responsibilities to citizens and industry begs the question whether devolved responsibility is a viable option for creating biosecurity outcomes. We examined recreational marine users' self-declared awareness of non-indigenous marine species (NIMS) at six locations in Tasmania, Australia and evaluated the accuracy of their awareness through recognition of four well-known NIMS with active awareness campaigns. We also investigated whether the activities of recreational marine users influence the accuracy of their NIMS recognition skills...
2017: PloS One
https://www.readbyqxmd.com/read/28402562/medical-tourism-medical-migration-and-global-justice-implications-for-biosecurity-in-a-globalized-world
#9
I Glenn Cohen
We live in the age of globalization. In medicine, that globalization has brought many benefits such as the diffusion of technology and the spread of health care training, but it has also brought threats to biosecurity. This article examines how medical tourism and medical migration pose risks to biosecurity. It also argues that designing legal responses to these risks requires not only technical competence but also a theory of global justice to guide that design.
April 11, 2017: Medical Law Review
https://www.readbyqxmd.com/read/28396608/zero-tolerance-biosecurity-protects-high-conservation-value-island-nature-reserve
#10
John K Scott, Simon J McKirdy, Johann van der Merwe, Roy Green, Andrew A Burbidge, Greg Pickles, Darryl C Hardie, Keith Morris, Peter G Kendrick, Melissa L Thomas, Kristin L Horton, Simon M O'Connor, Justin Downs, Richard Stoklosa, Russell Lagdon, Barbara Marks, Malcolm Nairn, Kerrie Mengersen
Barrow Island, north-west coast of Australia, is one of the world's significant conservation areas, harboring marsupials that have become extinct or threatened on mainland Australia as well as a rich diversity of plants and animals, some endemic. Access to construct a Liquefied Natural Gas (LNG) plant, Australia's largest infrastructure development, on the island was conditional on no non-indigenous species (NIS) becoming established. We developed a comprehensive biosecurity system to protect the island's biodiversity...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28395941/invasion-science-a-horizon-scan-of-emerging-challenges-and-opportunities
#11
REVIEW
Anthony Ricciardi, Tim M Blackburn, James T Carlton, Jaimie T A Dick, Philip E Hulme, Josephine C Iacarella, Jonathan M Jeschke, Andrew M Liebhold, Julie L Lockwood, Hugh J MacIsaac, Petr Pyšek, David M Richardson, Gregory M Ruiz, Daniel Simberloff, William J Sutherland, David A Wardle, David C Aldridge
We identified emerging scientific, technological, and sociopolitical issues likely to affect how biological invasions are studied and managed over the next two decades. Issues were ranked according to their probability of emergence, pervasiveness, potential impact, and novelty. Top-ranked issues include the application of genomic modification tools to control invasions, effects of Arctic globalization on invasion risk in the Northern Hemisphere, commercial use of microbes to facilitate crop production, the emergence of invasive microbial pathogens, and the fate of intercontinental trade agreements...
April 7, 2017: Trends in Ecology & Evolution
https://www.readbyqxmd.com/read/28392537/evaluation-of-calcium-hydrogen-carbonate-mesoscopic-crystals-as-a-disinfectant-for-influenza-a-viruses
#12
Ryuji Nakashima, Masaomi Kawamoto, Shigeru Miyazaki, Rumiko Onishi, Koichi Furusaki, Maho Osaki, Rikio Kirisawa, Akikazu Sakudo, Takashi Onodera
In this study, the virucidal effect of a novel electrically charged disinfectant CAC-717 was investigated. CAC-717 is produced by applying an electric field to mineral water containing calcium hydrogen carbonate to generate mesoscopic crystals. Virus titration analysis showed a >3 log reduction of influenza A viruses after treatment with CAC-717 for 1 min in room temperature, while infectivity was undetectable after 15 min treatment. Adding bovine serum albumin to CAC-717 solution did not affect the disinfectant effect...
April 10, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28390936/evidence-of-campylobacter-jejuni-reduction-in-broilers-with-early-synbiotic-administration
#13
Loredana Baffoni, Francesca Gaggìa, Giuliano Garofolo, Gabriella Di Serafino, Enrico Buglione, Elisabetta Di Giannatale, Diana Di Gioia
C. jejuni is considered a food safety concern to both public health authorities and consumers since it is the leading bacterial cause of food-borne gastroenteritis in humans. A high incidence of C. jejuni in broiler flocks is often correlated to pathogen recovery in retail poultry meat, which is the main source of human infection. In this work broiler chickens were fed with a synbiotic product mixed with conventional feed using two different administration strategies. The synbiotic was formulated with the microencapsulated probiotic Bifidobacterium longum PCB133 and a xylo-oligosaccharide (XOS)...
April 3, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28385270/host-genetics-of-response-to-porcine-reproductive-and-respiratory-syndrome-in-nursery-pigs
#14
REVIEW
Jack Dekkers, Raymond R R Rowland, Joan K Lunney, Graham Plastow
PRRS is the most costly disease in the US pig industry. While vaccination, biosecurity and eradication effort have had some success, the variability and infectiousness of PRRS virus strains have hampered the effectiveness of these measures. We propose the use of genetic selection of pigs as an additional and complementary effort. Several studies have shown that host response to PRRS infection has a sizeable genetic component and recent advances in genomics provide opportunities to capitalize on these genetic differences and improve our understanding of host response to PRRS...
March 22, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28381304/evaluation-of-biosecurity-measures-to-prevent-indirect-transmission-of-porcine-epidemic-diarrhea-virus
#15
Yonghyan Kim, My Yang, Sagar M Goyal, Maxim C-J Cheeran, Montserrat Torremorell
BACKGROUND: The effectiveness of biosecurity methods to mitigate the transmission of porcine epidemic diarrhea virus (PEDV) via farm personnel or contaminated fomites is poorly understood. This study was undertaken to evaluate the effectiveness of biosecurity procedures directed at minimizing transmission via personnel following different biosecurity protocols using a controlled experimental setting. RESULTS: PEDV RNA was detected from rectal swabs of experimentally infected (INF) and sentinel pigs by real-time reverse transcription polymerase chain reaction (rRT-PCR)...
April 5, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28379493/salmonella-spp-contamination-in-commercial-layer-hen-farms-using-different-types-of-samples-and-detection-methods
#16
M C Soria, M A Soria, D J Bueno, E I Godano, S C Gómez, I A ViaButron, V M Padin, A D Rogé
The performance of detection methods (culture methods and polymerase chain reaction assay) and plating media used in the same type of samples were determined as well as the specificity of PCR primers to detected Salmonella spp. contamination in layer hen farms. Also, the association of farm characteristics with Salmonella presence was evaluated. Environmental samples (feces, feed, drinking water, air, boot-swabs) and eggs were taken from 40 layer hen houses. Salmonella spp. was most detected in boot-swabs taken around the houses (30% and 35% by isolation and PCR, respectively) follow by fecal samples (15...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28376620/bioresponsive-release-system-for-visual-fluorescence-detection-of-carcinoembryonic-antigen-from-mesoporous-silica-nanocontainers-mediated-optical-color-on-quantum-dot-enzyme-impregnated-paper
#17
Zhenli Qiu, Jian Shu, Dianping Tang
An all-in-one paper-based analytical device (PAD) was successfully developed for visual fluorescence detection of carcinoembryonic antigen (CEA) on CdTe/CdSe quantum dot (QD)-enzyme-impregnated paper by coupling with a bioresponsive controlled-release system from DNA-gated mesoporous silica nanocontainers (MSNs). The assay was carried out in a centrifuge tube by using glucose-loaded MSNs with a CEA aptamer and a QD-enzyme-paper attached on the lid. Initially, single-strand complementary DNA to a CEA aptamer was covalently conjugated to the aminated MSN, and then glucose (enzyme substrate) molecules were gated into the pore with the help of the aptamer...
April 12, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28361722/synthetic-biology-between-self-regulation-and-public-discourse-ethical-issues-and-the-many-roles-of-the-ethicist
#18
Gardar Arnason
This article discusses the roles of ethicists in the governance of synthetic biology. I am particularly concerned with the idea of self-regulation of bioscience and its relationship to public discourse about ethical issues in bioscience. I will look at the role of philosophical ethicists at different levels and loci, from the "embedded ethicist" in the laboratory or research project, to ethicists' impact on policy and public discourse. In a democratic society, the development of governance frameworks for emerging technologies, such as synthetic biology, needs to be guided by a well-informed public discourse...
April 2017: Cambridge Quarterly of Healthcare Ethics: CQ: the International Journal of Healthcare Ethics Committees
https://www.readbyqxmd.com/read/28361719/consequentialism-and-the-synthetic-biology-problem
#19
Patrick Heavey
This article analyzes the ethics of synthetic biology (synbio) from a consequentialist perspective, examining potential effects on food and agriculture, and on medicine, fuel, and the advancement of science. The issues of biosafety and biosecurity are also examined. A consequentialist analysis offers an essential road map to policymakers and regulators as to how to deal with synbio. Additionally, the article discusses the limitations of consequentialism as a tool for analysing synbioethics. Is it possible to predict, with any degree of plausibility, what the consequences of synthetic biology will be in 50 years, or in 100, or in 500? Synbio may take humanity to a place of radical departure from what is known or knowable...
April 2017: Cambridge Quarterly of Healthcare Ethics: CQ: the International Journal of Healthcare Ethics Committees
https://www.readbyqxmd.com/read/28350004/mitochondrial-dna-and-trade-data-support-multiple-origins-of-helicoverpa-armigera-lepidoptera-noctuidae-in-brazil
#20
Wee Tek Tay, Thomas K Walsh, Sharon Downes, Craig Anderson, Lars S Jermiin, Thomas K F Wong, Melissa C Piper, Ester Silva Chang, Isabella Barony Macedo, Cecilia Czepak, Gajanan T Behere, Pierre Silvie, Miguel F Soria, Marie Frayssinet, Karl H J Gordon
The Old World bollworm Helicoverpa armigera is now established in Brazil but efforts to identify incursion origin(s) and pathway(s) have met with limited success due to the patchiness of available data. Using international agricultural/horticultural commodity trade data and mitochondrial DNA (mtDNA) cytochrome oxidase I (COI) and cytochrome b (Cyt b) gene markers, we inferred the origins and incursion pathways into Brazil. We detected 20 mtDNA haplotypes from six Brazilian states, eight of which were new to our 97 global COI-Cyt b haplotype database...
March 28, 2017: Scientific Reports
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