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https://www.readbyqxmd.com/read/27904278/tick-bite-by-nymphal-amblyomma-testudinarium
#1
Yeong Ho Kim, Ji Hyun Lee, Young Min Park, Jun Young Lee
Ticks are parasites that usually suck the blood of wild or domestic animals; rarely, they ingest human blood and spread various febrile infectious diseases along with skin problems. Out of 40 cases of tick bite reported in Korea, only 3 were caused by nymphal ticks, and tick bites by nymphal Amblyomma testudinarium have not been reported previously. Herein, we report a rare case of tick bite by nymphal A. testudinarium. A 57-year-old woman presented with an asymptomatic solitary erythematous nodule on the left thigh that had been present for 6 days...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27903804/structural-protein-vp2-of-african-horse-sickness-virus-is-not-essential-for-virus-replication-in-vitro
#2
René G P van Gennip, Sandra G P van de Water, Christiaan A Potgieter, Piet A van Rijn
: The Reoviridae family consists of non-enveloped multi-layered viruses with a double stranded RNA genome consisting of 9 to 12 genome segments. The Orbivirus genus of the Reoviridae family contains African horse sickness virus (AHSV), bluetongue virus and epizootic haemorrhagic disease virus causing notifiable diseases and are spread by biting Culicoides species. Here, we used reverse genetics for AHSV to study the role of outer capsid protein VP2 encoded by genome segment 2 (Seg-2)...
November 30, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27902329/abundance-of-antibiotic-resistance-genes-in-environmental-bacteriophages
#3
Taruna Anand, Bidhan Ch Bera, Rajesh K Vaid, Sanjay Barua, Thachamvally Riyesh, Nitin Virmani, Mubarik Hussain, Raj K Singh, Bhupendra N Tripathi
The ecosystem is continuously exposed to a wide variety of antimicrobials through waste effluents, agricultural runoffs, animal related and anthropogenic activities, which contribute to spread of antibiotic resistance genes (ARGs). The contamination of ecosystems with ARGs may create increased opportunities for their transfer to naive microbes and eventually lead to entry into the human food chain. Transduction is a significant mechanism of horizontal gene transfer in natural environments, which has traditionally been underestimated as compared to transformation...
October 21, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27901555/osteoblast-seeded-bioglass-gelatin-nanocomposite-a-promising-bone-substitute-in-critical-size-calvarial-defect-repair-in-rat
#4
Behrooz Johari, Mehdi Kadivar, Shirin Lak, Mazaher Gholipourmalekabadi, Aleksandra M Urbanska, Masoud Mozafari, Maryam Ahmadzadehzarajabad, Asaad Azarnezhad, Samane Afshari, Jamil Zargan, Saeid Kargozar
INTRODUCTION: Amid the plethora of methods to repair critical bone defects, there is no one perfect approach. In this study, we sought to evaluate a potent 3-dimensional (3D) bioactive SiO2-CaO-P2O5 glasses (bioglass)/gelatin (gel) scaffold for its biocompatibility by seeding cells as well as for its regenerative properties by animal implantation. METHODS: Osteoblast cells were seeded onto nanocomposite scaffolds to investigate the process of critical-size calvarial defect via new bone formation...
November 29, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27894719/structural-based-designed-modular-capsomere-comprising-ha1-for-low-cost-poultry-influenza-vaccination
#5
Jarurin Waneesorn, Nani Wibowo, John Bingham, Anton P J Middelberg, Linda H L Lua
Highly pathogenic avian influenza (HPAI) viruses cause a severe and lethal infection in domestic birds. The increasing number of HPAI outbreaks has demonstrated the lack of capabilities to control the rapid spread of avian influenza. Poultry vaccination has been shown to not only reduce the virus spread in animals but also reduce the virus transmission to humans, preventing potential pandemic development. However, existing vaccine technologies cannot respond to a new virus outbreak rapidly and at a cost and scale that is commercially viable for poultry vaccination...
November 25, 2016: Vaccine
https://www.readbyqxmd.com/read/27894321/encephalomyocarditis-virus-infection-in-macaca-sylvanus-and-hystrix-cristata-from-an-italian-rescue-centre-for-wild-and-exotic-animals
#6
Giusy Cardeti, Valeria Mariano, Claudia Eleni, Marco Aloisi, Goffredo Grifoni, Stefania Sittinieri, Giampiero Dante, Valeria Antognetti, Efrem Alessandro Foglia, Antonella Cersini, Alberigo Nardi
BACKGROUND: The Encephalomyocarditis virus (EMCV) is a small, non enveloped, positive sense single-stranded RNA virus in the genus Cardiovirus, family Picornaviridae, with two known serotypes. It is spread worldwide and infects a huge range of vertebrate hosts with zoonotic potential for humans. The pig is the mammal most likely to be impacted on with the disease, but EMCV occurrence has also been reported in non-human primates and in a variety of domestic, captive and wild animals. Until now, human cases have been very rare and the risk appears to be almost negligible in spite of human susceptibility to the infection...
November 28, 2016: Virology Journal
https://www.readbyqxmd.com/read/27891118/colistin-in-pig-production-chemistry-mechanism-of-antibacterial-action-microbial-resistance-emergence-and-one-health-perspectives
#7
REVIEW
Mohamed Rhouma, Francis Beaudry, William Thériault, Ann Letellier
Colistin (Polymyxin E) is one of the few cationic antimicrobial peptides commercialized in both human and veterinary medicine. For several years now, colistin has been considered the last line of defense against infections caused by multidrug-resistant Gram-negative such as Acinetobacter baumannii, Pseudomonas aeruginosa, and Klebsiella pneumoniae. Colistin has been extensively used orally since the 1960s in food animals and particularly in swine for the control of Enterobacteriaceae infections. However, with the recent discovery of plasmid-mediated colistin resistance encoded by the mcr-1 gene and the higher prevalence of samples harboring this gene in animal isolates compared to other origins, livestock has been singled out as the principal reservoir for colistin resistance amplification and spread...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27890443/oxa-23-and-isaba1-oxa-66-class-d-%C3%AE-lactamases-in-acinetobacter-baumannii-isolates-from-companion-animals
#8
Christa Ewers, Peter Klotz, Ursula Leidner, Ivonne Stamm, Ellen Prenger-Berninghoff, Stephan Göttig, Torsten Semmler, Sandra Scheufen
Acinetobacter baumannii is recognised as a major pathogen of nosocomial infections that frequently show resistance to last-resort antimicrobials. To investigate whether A. baumannii from companion animals harbour carbapenem resistance mechanisms, 223 clinical isolates obtained from veterinary clinics between 2000 and 2013 in Germany were screened for carbapenem-non-susceptibility employing meropenem-containing Mueller-Hinton agar plates. Minimum inhibitory concentration (MIC) data were obtained using the VITEK(®)2 system...
November 16, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/27873028/mcr-modern-colistin-resistance
#9
REVIEW
I Caniaux, A van Belkum, G Zambardi, L Poirel, M F Gros
Recently, plasmid-mediated and, therefore, transferable bacterial polymyxin resistance was discovered in strains from both humans and animals. Such a trait may widely spread geographically, while simultaneously crossing microbial species barriers. This may ultimately render the "last resort" polymyxin antibiotics therapeutically useless. Colistin is currently used to treat infections caused by Gram-negative carbapenemase producers and colistin resistance may lead to practical pan-antibiotic resistance. We here analyzed the medical and diagnostic consequences of (emerging) colistin resistance and propose pathways toward adequate diagnostics for timely detection of both asymptomatic carriage and infection...
November 21, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27871899/balkan-endemic-nephropathy-still-continuing-enigma-risk-assessment-and-underestimated-hazard-of-joint-mycotoxin-exposure-of-animals-or-humans
#10
REVIEW
Stoycho D Stoev
The spreading of mycotoxic nephropathy in animals/humans was studied. The possible etiological causes provoking this nephropathy were carefully reviewed and analyzed. The natural content of the most frequent nephrotoxic mycotoxins in target feedstuffs/foods were investigated, in addition to their significance for development of renal damages in endemic areas. An estimation of the level of exposure of humans to the nephrotoxic mycotoxin, ochratoxin A (OTA), is made. The possible synergism or additive effects between some target mycotoxins in the development of nephropathy is also covered...
November 18, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27871776/life-cycle-of-spinose-ear-tick-otobius-megnini-acari-argasidae-infesting-the-race-horses-in-nuwara-eliya-sri-lanka
#11
G C P Diyes, R S Rajakaruna
Otobius megnini infests mainly domesticated and wild animals and occasionally humans. It has been identified as an agent of human and horse otoacariasis in Sri Lanka. The number of nymphal stages in the life cycle of O. megnini varies from one to three in different geographic regions. The present study determined the life cycle of O. megnini infesting the racehorses in Nuwara Eliya. A tick colony was initiated from fully engorged nymphs collected from horses and maintained at 10°C, 22°C and 28°C. Immature stages were reared on New Zealand rabbits...
November 18, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27871295/anaplasma-phagocytophilum-in-sheep-and-goats-in-central-and-southeastern-china
#12
Jifei Yang, Zhijie Liu, Qingli Niu, Junlong Liu, Rong Han, Guiquan Guan, Youquan Li, Guangyuan Liu, Jianxun Luo, Hong Yin
BACKGROUND: Anaplasma phagocytophilum is wide spread throughout the world and impacts both human and animal health. Several distinct ecological clusters and ecotypes of the agent have been established on the basis of various genetic loci. However, information on the genetic variability of A. phagocytophilum isolates in China represents a gap in knowledge. The objective of this study was to determine the prevalence and genetic characterization of A. phagocytophilum in small ruminants in central and southeastern China...
November 21, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27866828/high-fat-western-diet-induced-obesity-contributes-to-increased-tumor-growth-in-mouse-models-of-human-colon-cancer
#13
Ann Marie O'Neill, Christine M Burrington, Erin A Gillaspie, Darin T Lynch, Melissa J Horsman, Michael W Greene
Strong epidemiologic evidence links colon cancer to obesity. The increasing worldwide incidence of colon cancer has been linked to the spread of the Western lifestyle, and in particular consumption of a high-fat Western diet. In this study, our objectives were to establish mouse models to examine the effects of high-fat Western diet-induced obesity on the growth of human colon cancer tumor xenografts, and to examine potential mechanisms driving obesity-linked human colon cancer tumor growth. We hypothesize that mice rendered insulin resistant due to consumption of a high-fat Western diet will show increased and accelerated tumor growth...
October 20, 2016: Nutrition Research
https://www.readbyqxmd.com/read/27865508/occurrence-of-methicillin-resistant-staphylococcus-aureus-in-dairy-cattle-herds-related-swine-farms-and-humans-in-contact-with-herds
#14
C Locatelli, P Cremonesi, A Caprioli, V Carfora, A Ianzano, A Barberio, S Morandi, A Casula, B Castiglioni, V Bronzo, P Moroni
In this study we investigated the circulation of methicillin-resistant Staphylococcus aureus (MRSA) in 2 dairy cattle farms (farm A and B), previously identified as MRSA-positive in bulk tank milk samples, and epidemiologically related to swine farms. Collected specimens included quarter milk samples and nasal swabs from dairy cows, pig nasal swabs collected at both the farm and slaughterhouse level, environmental dust samples, and human nasal swabs from the farms' owners and workers. The prevalence of MRSA was estimated at the herd level by testing quarter milk samples...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27863533/ecological-niche-modelling-of-rift-valley-fever-virus-vectors-in-baringo-kenya
#15
Alfred O Ochieng, Mark Nanyingi, Edwin Kipruto, Isabella M Ondiba, Fred A Amimo, Christopher Oludhe, Daniel O Olago, Isaac K Nyamongo, Benson B A Estambale
BACKGROUND: Rift Valley fever (RVF) is a vector-borne zoonotic disease that has an impact on human health and animal productivity. Here, we explore the use of vector presence modelling to predict the distribution of RVF vector species under climate change scenario to demonstrate the potential for geographic spread of Rift Valley fever virus (RVFV). OBJECTIVES: To evaluate the effect of climate change on RVF vector distribution in Baringo County, Kenya, with an aim of developing a risk map for spatial prediction of RVF outbreaks...
2016: Infection Ecology & Epidemiology
https://www.readbyqxmd.com/read/27858930/environmental-spread-of-microbes-impacts-the-development-of-metabolic-phenotypes-in-mice-transplanted-with-microbial-communities-from-humans
#16
Li Zhang, Martin Iain Bahl, Henrik Munch Roager, Cilius Esmann Fonvig, Lars I Hellgren, Henrik Lauritz Frandsen, Oluf Pedersen, Jens-Christian Holm, Torben Hansen, Tine Rask Licht
Microbiota transplantation to germ-free animals is a powerful method to study involvement of gut microbes in the aetiology of metabolic syndrome. Owing to large interpersonal variability in gut microbiota, studies with broad coverage of donors are needed to elucidate the establishment of human-derived microbiotas in mice, factors affecting this process and resulting impact on metabolic health. We thus transplanted faecal microbiotas from humans (16 obese and 16 controls) separately into 64 germ-free Swiss Webster mice caged in pairs within four isolators, with two isolators assigned to each phenotype, thereby allowing us to explore the extent of microbial spread between cages in a well-controlled environment...
November 18, 2016: ISME Journal
https://www.readbyqxmd.com/read/27855488/an-expanding-toolkit-for-preclinical-pre-erythrocytic-malaria-vaccine-development-bridging-traditional-mouse-malaria-models-and-human-trials
#17
Ryan Wj Steel, Stefan Hi Kappe, Brandon K Sack
Malaria remains a significant public health burden with 214 million new infections and over 400,000 deaths in 2015. Elucidating relevant Plasmodium parasite biology can lead to the identification of novel ways to control and ultimately eliminate the parasite within geographic areas. Particularly, the development of an effective vaccine that targets the clinically silent pre-erythrocytic stages of infection would significantly augment existing malaria elimination tools by preventing both the onset of blood-stage infection/disease as well as spread of the parasite through mosquito transmission...
November 18, 2016: Future Microbiology
https://www.readbyqxmd.com/read/27852850/dual-function-of-the-pul7-pul51-tegument-protein-complex-in-hsv-1-infection
#18
Anna Albecka, Danielle J Owen, Lyudmila Ivanova, Juliane Brun, Rukayya Liman, Laura Davies, M Firoz Ahmed, Susanna Colaco, Michael Hollinshead, Stephen C Graham, Colin M Crump
: The tegument of herpesviruses is a highly complex structural layer between the nucleocapsid and the envelope of virions. Tegument proteins play both structural and regulatory functions during replication and spread, but the interactions and functions of many of these proteins are poorly understood. Here we focus on two tegument proteins from herpes simplex virus-1 (HSV-1), pUL7 and pUL51, which have homologues in all other herpesviruses. We have now identified that HSV-1 pUL7 and pUL51 form a stable and direct protein-protein interaction, their expression levels rely on the presence of each other and that they function as a complex in infected cells...
November 16, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27851997/mrsa-among-animals-current-overview
#19
REVIEW
Marta Aires-de-Sousa
Currently, methicillin-resistant Staphylococcus aureus (MRSA) is a universal threat. After being well established in the healthcare setting, it has emerged in the community among people with no risk factors for MRSA acquisition, therefore imposing a new threat. The subsequent detection of MRSA colonizing or infecting animals as well as in food of animal origin was of major concern, revealing new reservoirs for MRSA. The major MRSA clonal lineages circulating in the different settings, i.e. in hospitals, in the community and among animals are described here, differentiating between clones colonizing companion and food-chain animals...
November 13, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27848954/myelinosome-formation-represents-an-early-stage-of-oligodendrocyte-damage-in-multiple-sclerosis-and-its-animal-model
#20
Elisa Romanelli, Doron Merkler, Aleksandra Mezydlo, Marie-Theres Weil, Martin S Weber, Ivana Nikić, Stephanie Potz, Edgar Meinl, Florian E H Matznick, Mario Kreutzfeldt, Alexander Ghanem, Karl-Klaus Conzelmann, Imke Metz, Wolfgang Brück, Matthew Routh, Mikael Simons, Derron Bishop, Thomas Misgeld, Martin Kerschensteiner
Oligodendrocyte damage is a central event in the pathogenesis of the common neuroinflammatory condition, multiple sclerosis (MS). Where and how oligodendrocyte damage is initiated in MS is not completely understood. Here, we use a combination of light and electron microscopy techniques to provide a dynamic and highly resolved view of oligodendrocyte damage in neuroinflammatory lesions. We show that both in MS and in its animal model structural damage is initiated at the myelin sheaths and only later spreads to the oligodendrocyte cell body...
November 16, 2016: Nature Communications
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