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https://www.readbyqxmd.com/read/28527208/neuronal-expression-of-truncated-tau-efficiently-promotes-neurodegeneration-in-animal-models-pitfalls-of-toxic-oligomer-analysis
#1
Rostislav Skrabana, Branislav Kovacech, Peter Filipcik, Norbert Zilka, Santosh Jadhav, Tomas Smolek, Eva Kontsekova, Michal Novak
Animal models of neurodegeneration induced by neuronal expression of truncated tau protein emerge as an important tool for understanding the pathogenesis of human tauopathies and for therapy development. Here we highlight common features of truncated tau models and make a critical assessment of possible pitfalls in their analysis. Particularly, the amount of soluble tau oligomers, which are suspected to be neurotoxic agents participating on the spreading of pathology inside the brain, may be overestimated due to a post-lysis oxidative tau oligomerization...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28525507/subcellular-energetics-and-metabolism-a-cross-species-framework
#2
Robert H Thiele
Although it is generally believed that oxidative phosphorylation and adequate oxygenation are essential for life, human development occurs in a profoundly hypoxic environment and "normal" levels of oxygen during embryogenesis are even harmful. The ability of embryos not only to survive but also to thrive in such an environment is made possible by adaptations related to metabolic pathways. Similarly, cancerous cells are able not only to survive but also to grow and spread in environments that would typically be fatal for healthy adult cells...
June 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28524070/tmprss2-and-mspl-facilitate-trypsin-independent-porcine-epidemic-diarrhea-virus-replication-in-vero-cells
#3
Wen Shi, Wenlu Fan, Jing Bai, Yandong Tang, Li Wang, Yanping Jiang, Lijie Tang, Min Liu, Wen Cui, Yigang Xu, Yijing Li
Type II transmembrane serine proteases (TTSPs) facilitate the spread and replication of viruses such as influenza and human coronaviruses, although it remains unclear whether TTSPs play a role in the progression of animal coronavirus infections, such as that by porcine epidemic diarrhea virus (PEDV). In this study, TTSPs including TMPRSS2, HAT, DESC1, and MSPL were tested for their ability to facilitate PEDV replication in Vero cells. Our results showed that TMPRSS2 and MSPL played significant roles in the stages of cell-cell fusion and virus-cell fusion, whereas HAT and DESC1 exhibited weaker effects...
May 18, 2017: Viruses
https://www.readbyqxmd.com/read/28521687/diet-and-contaminants-driving-the-rise-to-obesity-epidemics
#4
Agostino Di Ciaula, Piero Portincasa
The obesity epidemic is spreading worldwide without reversal trend and despite specific policies oriented to dietary habits and lifestyle, which seem to have modest effects. Genetic factors only partly explain the rise, whereas environmental factors seem to play a key role, mainly by gene-environment interactions through epigenetic mechanisms. A number of animal and human studies point to maternal diet, intestinal microbiota and chemicals introduced as contaminants with food, all factors able to increase the risk of obesity...
May 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28521000/the-ecology-of-extended-spectrum-%C3%AE-lactamases-esbls-in-the-developed-world
#5
Yohei Doi, Alina Iovleva, Robert A Bonomo
Background: Since the initial appearance in the 1980s, Enterobacteriaceae producing extended-spectrum β-lactamase (ESBL) have increased in prevalence and emerged as a major antimicrobial-resistant pathogen. The source of these antimicrobial-resistant bacteria in the developed world is an area of active investigation. Methods: A standard internet search was conducted with a focus on the epidemiology and potential sources of ESBL-producing Enterobacteriaceae in the developed world...
April 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28520993/effects-of-short-and-long-course-antibiotics-on-the-lower-intestinal-microbiome-as-they-relate-to-traveller-s-diarrhea
#6
Lawrence Clifford McDonald
BACKGROUND: Antibiotics have profound and lasting effects on the lower intestinal (gut) microbiome that can both promote resistance and increase susceptibility to colonization and infection; knowledge of these changes is important to the prevention and treatment of traveler's diarrhea. METHODS: Recent data from epidemiologic and modern metagenomics studies were reviewed in regard to how such findings could inform the prevention and treatment of traveler's diarrhea...
April 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28515300/a-novel-a-h7n2-influenza-virus-isolated-from-a-veterinarian-caring-for-cats-in-a-new-york-city-animal-shelter-causes-mild-disease-and-transmits-poorly-in-the-ferret-model
#7
Jessica A Belser, Joanna A Pulit-Penaloza, Xiangjie Sun, Nicole Brock, Claudia Pappas, Hannah M Creager, Hui Zeng, Terrence M Tumpey, Taronna R Maines
In December 2016, a low pathogenic avian influenza (LPAI) A(H7N2) virus was identified as the causative source of an outbreak in a cat shelter in New York City, which subsequently spread to multiple shelters in New York and Pennsylvania. One person with occupational exposure to infected cats became infected with the virus, representing the first LPAI H7N2 human infection in North America since 2003. Considering the close contact that frequently occurs between companion animals and humans, it was critical to assess the relative risk of this novel virus to public health...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28514225/vector-and-serologic-survey-for-crimean-congo-hemorrhagic-fever-virus-in-poland
#8
Barbara A Bażanów, Jarosław Pacoń, Łukasz Gadzała, Agnieszka Frącka, Mirosław Welz, Janusz Paweska
In contrast to animals, Crimean-Congo hemorrhagic fever (CCHF) causes a severe disease in humans with a high mortality rate. The etiological agent, CCHF virus (CCHFV), can be transmitted by argasid and ixodid ticks, but arachnids of the genus Hyalomma, followed by Rhipicephalus and Dermacentor serve as the major vectors of this virus. The goal of the study was to assess the epidemiological situation of CCHFV infection in cattle in south-east Poland, and survey for potential tick vector species. A total of 592 bovine blood samples from animals located in the southernmost region in Poland were tested by IgG sandwich enzyme-linked immunosorbent assay...
May 17, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28504096/multiple-clones-and-low-antimicrobial-resistance-rates-for-salmonella-enterica-serovar-infantis-populations-in-greece
#9
Theofilos Papadopoulos, Evanthia Petridou, Antonios Zdragas, Georgia Mandilara, Georgios Vafeas, Maria Passiotou, Alkiviadis Vatopoulos
All the Salmonella enterica ser. Infantis strains isolated under official control programs in Greece during a four year period were studied, 23 of human origin, 16 from food animals and one from food. Molecular analyses (PFGE) in combination with antimicrobial susceptibility testing were used to study whether the occurrence S. Infantis in Greece resulted from different biotypes or a successful spread of one clone. Low rates of antimicrobial resistance were observed, except for streptomycin among human isolates (48%), indicating that selective pressure due to consumption of antimicrobials has not resulted the spread of dominant clones...
April 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28494209/antibiotic-resistance-virulence-factors-and-biofilm-formation-ability-in-escherichia-coli-strains-isolated-from-chicken-meat-and-wildlife-in-the-czech-republic
#10
Silvie Pavlickova, Anja Klancnik, Magda Dolezalova, Sonja Smole Mozina, Ivan Holko
Attachment of pathogenic bacteria to food contact surfaces and the subsequent biofilm formation represent a serious threat for the food industry, since these bacteria are more resistant to antimicrobials or possess more virulence factors. The main aim of this study was to investigate the correlation between antibiotic resistance against 13 antibiotics, distribution of 10 virulence factors and biofilm formation in 105 Escherichia coli strains according to their origin. The high prevalence of antibiotic resistance that we have found in wildlife isolates could be acquired by horizontal transfer of resistance genes from human or domestic or farm animals...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28493964/non-human-primate-orthologues-of-tmprss2-cleave-and-activate-the-influenza-virus-hemagglutinin
#11
Pawel Zmora, Paulina Molau-Blazejewska, Stephanie Bertram, Kerstin Walendy-Gnirß, Inga Nehlmeier, Anika Hartleib, Anna-Sophie Moldenhauer, Sebastian Konzok, Susann Dehmel, Katherina Sewald, Constantin Brinkmann, Christoph Curths, Sascha Knauf, Jens Gruber, Kerstin Mätz-Rensing, Franziska Dahlmann, Armin Braun, Stefan Pöhlmann
The cellular serine protease TMPRSS2, a member of the type II transmembrane serine protease (TTSP) family, cleaves and activates the hemagglutinin of influenza A viruses (FLUAV) in cell culture and is essential for spread of diverse FLUAV in mice. Non-human primates (NHP), in particular rhesus and cynomolgus macaques, serve as animal models for influenza and experimental FLUAV infection of common marmosets has recently also been reported. However, it is currently unknown whether the NHP orthologues of human TMPRSS2 cleave and activate FLUAV hemagglutinin and contribute to viral spread in respiratory tissue...
2017: PloS One
https://www.readbyqxmd.com/read/28493801/imaging-of-hydatid-disease-with-a-focus-on-extrahepatic-involvement
#12
Eugenio Zalaquett, Christine Menias, Francisco Garrido, Matías Vargas, José Francisco Olivares, Daniel Campos, Natalia Pinochet, Antonio Luna, Nirvikar Dahiya, Álvaro Huete
Hydatid disease (HD) is a parasitic infection caused by the larvae of a tapeworm that is endemic to many regions around the world-South America, Africa, and Asia, in particular. Humans are infected as intermediate hosts in the parasite's life cycle; thus, HD can be seen in persons living in areas where animal husbandry is practiced. However, owing to the varied patterns of migration and immigration during the past several decades, HD can be diagnosed in individuals living anywhere. The liver is the most common organ involved, with hepatic HD accounting for the majority of published cases...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28487209/molecular-characterisation-of-carbapenemases-in-urban-pigeon-droppings-in-france-and-algeria
#13
Houda Morakchi, Lotfi Loucif, Djamila Gacemi-Kirane, Jean-Marc Rolain
OBJECTIVES: The main objective of this study was to detect the presence of carbapenemase-encoding genes in stool samples of urban pigeons. METHODS: Stool samples were collected from 73 pigeons in two Mediterranean cities, namely Marseille (France) and Annaba (Algeria). Faecal samples were screened by real-time PCR and standard PCR for the presence of carbapenemase-encoding genes. RESULTS: Carbapenem resistance genes were detected in 16 (21...
May 6, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28482157/enhancing-continuous-online-microdialysis-using-dexamethasone-measurement-of-dynamic-neurometabolic-changes-during-spreading-depolarization
#14
Erika L Varner, Chi Leng Leong, Andrea Jaquins-Gerstl, Kathryn M Nesbitt, Martyn G Boutelle, Adrian Charles Michael
Microdialysis is well established in chemical neuroscience as a mainstay technology for real time intracranial chemical monitoring in both animal models and human patients. Evidence shows that microdialysis can be enhanced by mitigating the penetration injury caused during the insertion of microdialysis probes into brain tissue. Herein, we show that retrodialysis of dexamethasone in the rat cortex enhances the microdialysis detection of K+ and glucose transients induced by spreading depolarization. Without dexamethasone, quantification of glucose transients was unreliable by 5 days after probe insertion...
May 8, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28472131/repeated-dose-toxicity-of-common-ragweed-on-rats
#15
Tivadar Kiss, Andrea Szabó, Gábor Oszlánczi, Anita Lukács, Zoltán Tímár, László Tiszlavicz, Dezső Csupor
Ambrosia artemisiifolia L. is an invasive species with highly allergenic pollens. Ragweed originates from North America, but it also occurs and is spreading in Europe, causing seasonal allergic rhinitis for millions of people. Recently, the herb of A. artemisiifolia has gained popularity as medicinal plant and food. The effects of its long-term intake are unknown; there are no toxicological data to support the safe use of this plant. The aim of our study was to assess the repeated dose toxicity of A. artemisiifolia on animals...
2017: PloS One
https://www.readbyqxmd.com/read/28466955/-epidemiology-and-prevention-of-leptospirosis-in-dogs
#16
Michèle Bergmann, Julia-Rebecca Llewellyn, Katrin Hartmann
Leptospirosis is a zoonotic disease with increasing prevalence in dogs and humans. The various Leptospira serovars display different pathogenicity. Even healthy infected dogs can shed leptospires with their urine and thus, represent a risk for humans and other animals. Vaccination is the most important measure for prevention; it not only prevents disease in dogs, but also reduces shedding of leptospires in urine. For comprehensive protection through vaccination, tetravalent vaccines containing serovars of the serogroups relevant in the corresponding region should be used...
May 3, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28464072/insular-east-asia-pig-dispersal-and-vicariance-inferred-from-asian-wild-boar-genetic-evidence
#17
K Y Li, K T Li, C H Yang, M H Hwang, S W Chang, S M Lin, H J Wu, E B Basilio, R S A Vega, R P Laude, Y T Ju
The Formosan wild boar () is an endemic subspecies in Taiwan. Understanding the origins and spread of the Formosan wild boar could help clarify East Asian wild boar dispersion. Although in situ domestication of the wild boar occurred at a number of domestication centers across East Asia, corroborating archaeological and genetic evidence of pig domestication on Taiwan is lacking, leading to domestication being described as cryptic. This characterization applies to the Lanyu pig-a domestic pig breed found on Taiwan...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28460593/the-role-of-rodents-in-avian-influenza-outbreaks-in-poultry-farms-a-review
#18
Francisca C Velkers, Simon J Blokhuis, Edwin J B Veldhuis Kroeze, Sara A Burt
Avian influenza outbreaks continue to strike poultry worldwide, affecting human and animal health and welfare and representing a substantial economic burden. Wild migratory birds, especially waterfowl and shore birds, are associated with global spread of avian influenza virus (AIV). Although direct contact with wild birds and virus-contaminated fomites is unlikely in modern non-free range poultry farms applying standard biosecurity measures, AIV outbreaks still occur. This suggests involvement of other intermediate factors for virus transmission between wild birds and poultry...
May 2, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28459224/trichophyton-verrucosum-infection-in-livestock-in-the-chitral-district-of-pakistan
#19
Khalid Hameed, Farhana Riaz Ch, Muhammad Ali Nawaz, Syed Muhammad Saqlan Naqvi, Yvonne Gräser, Christiane Kupsch, Mario Pasquetti, Luca Rossi, Anna Rita Molinar Min, Paolo Tizzani, Elisa Chiavassa, Andrea Peano
INTRODUCTION: Trichophyton verrucosum belongs to the dermatophyte fungi, closely related organisms that cause skin infections in animals and humans. T. verrucosum infection has been reported in livestock and people in different countries from all continents. Human cases have been reported in different areas of Pakistan, but there is little information about the animal source of the fungus. METHODOLOGY: Dermatological specimens collected in the Chitral district of Pakistan for a study on mange in livestock were retrospectively analyzed for the presence of T...
April 30, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28459010/revisiting-the-global-problem-of-cryptosporidiosis-and-recommendations
#20
Arpit Kumar Shrivastava, Subrat Kumar, Woutrina A Smith, Priyadarshi Soumyaranjan Sahu
Cryptosporidiosis is a gastrointestinal illness caused by the protozoan parasite Cryptosporidium species, which is a leading cause of diarrhea in a variety of vertebrate hosts. The primary mode of transmission is through oral routes; infections spread with the ingestion of oocysts by susceptible animals or humans. In humans, Cryptosporidium infections are commonly found in children and immunocompromised individuals. The small intestine is the most common primary site of infection in humans while extraintestinal cryptosporidiosis occurs in immunocompromised individuals affecting the biliary tract, lungs, or pancreas...
January 2017: Tropical Parasitology
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