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Christopher J Lambert, Briana C Freshner, Arlen Chung, Tamara J Stevenson, D Miranda Bowles, Raheel Samuel, Bruce K Gale, Joshua L Bonkowsky
Zebrafish are a valuable model organism in biomedical research. Their rapid development, ability to model human diseases, utility for testing genetic variants identified from next-generation sequencing, amenity to CRISPR mutagenesis, and potential for therapeutic compound screening, has led to their wide-spread adoption in diverse fields of study. However, their power for large-scale screens is limited by the absence of automated genotyping tools for live animals. This constrains potential drug screen options, limits analysis of embryonic and larval phenotypes, and requires raising additional animals to adulthood to ensure obtaining an animal of the desired genotype...
2018: PloS One
Shupeng Dong, Qiming Liang
An infection by Zika virus (ZIKV), a mosquito-borne flavivirus, broke out in South American regions in 2015, and recently showed a tendency of spreading to North America and even worldwide. ZIKV was first detected in 1947 and only 14 human infection cases were reported until 2007. This virus was previously observed to cause only mild flu-like symptoms. However, recent ZIKV infections might be responsible for the increasing cases of neurological disorders such as Guillain-Barré syndrome and congenital defects, including newborn microcephaly...
March 14, 2018: Virologica Sinica
Bart Theelen, Claudia Cafarchia, Georgios Gaitanis, Ioannis Dimitrios Bassukas, Teun Boekhout, Thomas L Dawson
Malassezia are lipid dependent basidiomycetous yeasts that inhabit the skin and mucosa of humans and other warm-blooded animals, and are a major component of the skin microbiome. They occur as skin commensals, but are also associated with various skin disorders and bloodstream infections. The genus currently comprises 17 species and has recently been assigned its own class, Malasseziomycetes. Importantly, multiple Malassezia species and/or genotypes may cause unique or similar pathologies and vary in their antifungal susceptibility...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
S Napp, N Majó, R Sánchez-Gónzalez, J Vergara-Alert
Circulation of highly pathogenic avian influenza (HPAI) viruses poses a continuous threat to animal and public health. After the 2005-2006 H5N1 and the 2014-2015 H5N8 epidemics, another H5N8 is currently affecting Europe. Up to August 2017, 1,112 outbreaks in domestic and 955 in wild birds in 30 European countries have been reported, the largest epidemic by a HPAI virus in the continent. Here, the main epidemiological findings are described. While some similarities with previous HPAI virus epidemics were observed, for example in the pattern of emergence, significant differences were also patent, in particular the size and extent of the epidemic...
March 14, 2018: Transboundary and Emerging Diseases
Liang Lu, Zhiqin Wan, Ting Luo, Zhengwei Fu, Yuanxiang Jin
Microplastic (MP) has become a concerning global environmental problem. It is toxic to aquatic organisms and can spread through the food chain to ultimately pose a threat to humans. In the environment, MP can interact with microbes and act as a microbial habitat. However, effects of polystyrene MP on the gut microbiota in mammals remain unclear. Here, male mice were exposed to two different sizes of polystyrene MP for 5 weeks to explore its effect. We observed that oral exposure to 1000 μg/L of 0.5 and 50 μm polystyrene MP decreased the body, liver and lipid weights in mice...
March 9, 2018: Science of the Total Environment
A Sommanustweechai, V Tangcharoensathien, K Malathum, N Sumpradit, N Kiatying-Angsulee, N Janejai, S Jaroenpoj
BACKGROUND: Thailand has developed a national strategic plan on antimicrobial resistance (NSP-AMR) and endorsed by the Cabinet in August 2016. This study reviewed the main contents of the NSP-AMR and the mandates of relevant implementing agencies and identified challenges and recommends actions to mitigate implementation gaps. METHODS: This study analysed the contents of NSP-AMR, reviewed institutional mandates and assessed the implementation gaps among agencies responsible for NSP-AMR...
March 7, 2018: Public Health
V Ayano Ogawa, Cecilia M Shah, James M Hughes, Lonnie J King
Antimicrobial resistance is a major threat to global health security. While the global community has made recent advances to mitigate the threat of antimicrobial resistance, we continue to face challenges in creating solutions and concrete actions that will yield the greatest immediate impact. To examine the critical areas in human, animal and environmental health that contribute to the emergence and spread of antimicrobial resistance, the Forum on Microbial Threats of the U.S. National Academies of Sciences, Engineering and Medicine hosted a public workshop on June 20-21, 2017 in Washington, DC...
March 9, 2018: EcoHealth
Kaiyi Zhang, Ambre Riba, Monika Nietschke, Natalia Torow, Urska Repnik, Andreas Pütz, Marcus Fulde, Aline Dupont, Michael Hensel, Mathias Hornef
Effector molecules translocated by the Salmonella pathogenicity island (SPI)1-encoded type 3 secretion system (T3SS) critically contribute to the pathogenesis of human Salmonella infection. They facilitate internalization by non-phagocytic enterocytes rendering the intestinal epithelium an entry site for infection. Their function in vivo has remained ill-defined due to the lack of a suitable animal model that allows visualization of intraepithelial Salmonella. Here, we took advantage of our novel neonatal mouse model and analyzed various bacterial mutants and reporter strains as well as gene deficient mice...
March 9, 2018: PLoS Pathogens
Shin-Hee Kim
Highly pathogenic avian influenza (HPAI) H5N1 viruses are currently endemic in poultry in Egypt. Eradication of the viruses has been unsuccessful due to improper application of vaccine-based control strategies among other preventive measures. The viruses have evolved rapidly with increased bird-to-human transmission efficacy, thus affecting both animal and public health. Subsequent spread of potentially zoonotic low pathogenic avian influenza (LPAI) H9N2 in poultry has also hindered efficient control of avian influenza...
March 9, 2018: Viruses
Daniel E Sonenshine
Ticks are the major vectors of most disease-causing agents to humans, companion animals and wildlife. Moreover, ticks transmit a greater variety of pathogenic agents than any other blood-feeding arthropod. Ticks have been expanding their geographic ranges in recent decades largely due to climate change. Furthermore, tick populations in many areas of their past and even newly established localities have increased in abundance. These dynamic changes present new and increasing severe public health threats to humans, livestock and companion animals in areas where they were previously unknown or were considered to be of minor importance...
March 9, 2018: International Journal of Environmental Research and Public Health
Na Zhao, Supen Wang, Hongyi Li, Shelan Liu, Meng Li, Jing Luo, Wen Su, Hongxuan He
The migration of wild birds plays an important role in the transmission and spread of H5 highly pathogenic avian influenza (HPAI) virus, posing a severe risk to animal and human health. Substantial evidence suggests that altered gut microbial community is implicated in the infection of respiratory influenza virus. However, the influence of H5N1 infection in gut microbiota of migratory birds remains unknown. In January 2015, a novel recombinant H5N1 virus emerged and killed about 100 migratory birds, mainly including whooper swans in Sanmenxia Reservoir Area of China...
2018: Frontiers in Cellular and Infection Microbiology
Gary Wong, Wen-Guang Cao, Shi-Hua He, Zi-Rui Zhang, Wen-Jun Zhu, Estella Moffat, Hideki Ebihara, Carissa Embury-Hyatt, Xiang-Guo Qiu
The Angolan strain of Marburg virus (MARV/Ang) can cause lethal disease in humans with a case fatality rate of up to 90%, but infection of immunocompetent rodents do not result in any observable symptoms. Our previous work includes the development and characterization of a MARV/Ang variant that can cause lethal disease in mice (MARV/Ang-MA), with the aim of using this tool to screen for promising prophylactic and therapeutic candidates. An intermediate animal model is needed to confirm any findings from mice studies before testing in the gold-standard non-human primate (NHP) model...
January 18, 2018: Zoological Research
Richard Suu-Ire, Lineke Begeman, Ashley C Banyard, Andrew C Breed, Christian Drosten, Elisa Eggerbauer, Conrad M Freuling, Louise Gibson, Hooman Goharriz, Daniel L Horton, Daisy Jennings, Ivan V Kuzmin, Denise Marston, Yaa Ntiamoa-Baidu, Silke Riesle Sbarbaro, David Selden, Emma L Wise, Thijs Kuiken, Anthony R Fooks, Thomas Müller, James L N Wood, Andrew A Cunningham
Rabies is a fatal neurologic disease caused by lyssavirus infection. People are infected through contact with infected animals. The relative increase of human rabies acquired from bats calls for a better understanding of lyssavirus infections in their natural hosts. So far, there is no experimental model that mimics natural lyssavirus infection in the reservoir bat species. Lagos bat virus is a lyssavirus that is endemic in straw-colored fruit bats (Eidolon helvum) in Africa. Here we compared the susceptibility of these bats to three strains of Lagos bat virus (from Senegal, Nigeria, and Ghana) by intracranial inoculation...
March 5, 2018: PLoS Neglected Tropical Diseases
Dominika Czaplinska, Monika Górska, Kamil Mieczkowski, Grazyna Peszynska-Sularz, Anna J Zaczek, Hanna M Romanska, Rafal Sadej
INTRODUCTION: Triple-negative breast cancer (TNBC), representing over 15% of all breast cancers, has a poorer prognosis than other subtypes. There is no effective targeted treatment available for the TNBC sufferers. Ribosomal S6 kinases (RSKs) have been previously proposed as drug targets for TNBC based on observations that 85% of these tumors express activated RSKs. MATERIALS AND METHODS: Herein we examined an involvement of RSK1 (p90 ribosomal S6 kinase 1) in a regulation of TNBC growth and metastatic spread in an animal model, which closely imitates human disease...
March 2, 2018: Folia Histochemica et Cytobiologica
Sarah Trame, Inga Wessels, Hajo Haase, Lothar Rink
Inadequate dietary zinc intake is wide-spread in the world's population. Despite the clinical significance of zinc deficiency there is no established method or biomarker to reliably evaluate the zinc status. The aim of our study was to develop a biochemically validated questionnaire as a clinically useful tool that can predict the risk of an individual being zinc deficient. From 71 subjects aged 18-55 years blood and urine samples were collected. Zinc concentrations in serum and urine were determined by atomic absorption spectrometry...
February 21, 2018: Journal of Trace Elements in Medicine and Biology
Panos G Kalatzis, Daniel Castillo, Pantelis Katharios, Mathias Middelboe
A global distribution in marine, brackish, and freshwater ecosystems, in combination with high abundances and biomass, make vibrios key players in aquatic environments, as well as important pathogens for humans and marine animals. Incidents of Vibrio -associated diseases (vibriosis) in marine aquaculture are being increasingly reported on a global scale, due to the fast growth of the industry over the past few decades years. The administration of antibiotics has been the most commonly applied therapy used to control vibriosis outbreaks, giving rise to concerns about development and spreading of antibiotic-resistant bacteria in the environment...
February 24, 2018: Antibiotics
Mousa Khosravani
Historically, rodents-ectoparasites are responsible for many diseases in human and domestic animal communities because they are well-adapted to the environment and nutritional resources. In addition, ectoparasites can affect the reproductive rates, ecological fitness and the dispersal pattern of their hosts. Data was compiled through all publications relating to ectoparasites fauna from Iranian rodents. Host specificity, rodent-parasites interaction, geographical distribution, ecological trends as well as the medical or veterinary importance of ectoparasites are considered in this review...
March 2018: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
Ayodele Olatimehin, Adebayo O Shittu, Francis C Onwugamba, Alexander Mellmann, Karsten Becker, Frieder Schaumburg
Bats are economically important animals and serve as food sources in some African regions. They can be colonized with the Staphylococcus aureus complex, which includes Staphylococcus schweitzeri and Staphylococcus argenteus . Fecal carriage of S. aureus complex in the straw-colored fruit bat ( Eidolon helvum ) has been described. However, data on their transmission and adaptation in animals and humans are limited. The aim of this study was to investigate the population structure of the S. aureus complex in E...
2018: Frontiers in Microbiology
Emma E Glennon, Olivier Restif, Silke Riesle Sbarbaro, Romain Garnier, Andrew A Cunningham, Richard D Suu-Ire, Richard Osei-Amponsah, James L N Wood, Alison J Peel
Bat-borne viruses carry undeniable risks to the health of human beings and animals, and there is growing recognition of the need for a 'One Health' approach to understand their frequently complex spill-over routes. While domesticated animals can play central roles in major spill-over events of zoonotic bat-borne viruses, for example during the pig-amplified Malaysian Nipah virus outbreak of 1998-1999, the extent of their potential to act as bridging or amplifying species for these viruses has not been characterised systematically...
March 2018: Veterinary Journal
Duaa W Al-Sadeq, Amin F Majdalawieh, Areej G Mesleh, Omnya M Abdalla, Gheyath K Nasrallah
Hepatitis E virus (HEV) is an RNA virus that is an important cause of both acute and chronic hepatitis worldwide. To date, there are eight HEV genotypes that can infect mammals. HEV-1 and HEV-2 infect exclusively humans, while HEV-3 and HEV-4 infect humans and various animals, mainly pigs and deer. Additionally, two new genotypes (HEV-5 and HEV-6) infect mainly wild boar. Recently, newly discovered genotypes HEV-7 and HEV-8 were found to infect camels and possibly humans. Nevertheless, the epidemiological distribution of HEV-7 is not well established...
February 27, 2018: Journal of Medical Microbiology
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