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https://www.readbyqxmd.com/read/28742879/epidemiological-investigations-of-the-introduction-of-porcine-reproductive-and-respiratory-syndrome-virus-in-chile-2013-2015
#1
Víctor Neira, Barbara Brito, Juan Mena, Marie Culhane, Maria Ignacia Apel, Vanessa Max, Patricio Perez, Valentina Moreno, Christian Mathieu, Magdalena Johow, Catalina Badia, Montserrat Torremorell, Rafael Medina, Rene Ortega
Porcine reproductive and respiratory syndrome (PRRS) is endemic in most pork producing countries. In Chile, eradication of PRRS virus (PRRSV) was successfully achieved in 2009 as a result of the combined efforts of producers and the animal health authorities. In October 2013, after several years without detecting PRRSV under surveillance activities, suspected cases were confirmed on a commercial swine farm. Here, we describe the PRRS epidemic in Chile between October 2013 and April 2015, and we studied the origins and spread of PRRSV throughout the country using official surveillance data and Bayesian phylogenetic analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28742457/epidemic-network-analysis-for-mitigation-of-invasive-pathogens-in-seed-systems-potato-in-ecuador
#2
Christopher Buddenhagen, John Hernandez Nopsa, Kelsey F Andersen, Jorge Andrade-Piedra, Greg Forbes, Peter Kromann, Sara Thomas-Sharma, Pilar Useche, Karen A Garrett
Seed systems have an important role in the distribution of high quality seed and improved varieties. The structure of seed networks also helps to determine the epidemiological risk for seedborne disease. We present a new method for evaluating the epidemiological role of nodes in seed networks, and apply it to a regional potato farmer consortium (CONPAPA) in Ecuador. We surveyed farmers to estimate the structure of networks of farmer seed tuber and ware potato transactions, and farmer information sources about pest and disease management...
July 25, 2017: Phytopathology
https://www.readbyqxmd.com/read/28741102/the-range-of-neurological-complications-in-chikungunya-fever
#3
T Cerny, M Schwarz, U Schwarz, J Lemant, P Gérardin, E Keller
BACKGROUND: Chikungunya fever is a globally spreading mosquito-borne disease that shows an unexpected neurovirulence. Even though the neurological complications have been a major cause of intensive care unit admission and death, to date, there is no systematic analysis of their spectrum available. OBJECTIVE: To review evidence of neurological manifestations in Chikungunya fever and map their epidemiology, clinical spectrum, pathomechanisms, diagnostics, therapies and outcomes...
May 25, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28740840/bicytopenia-and-leukoerythroblastosis-a-rare-initial-presentation-of-signet-ring-cell-gastric-adenocarcinoma
#4
REVIEW
Vilma Takayasu, Edna Harumi Goto, Mayra Zanon Casagrande, Paulo Guilherme de Arruda Miranda, Gabriela Bezerra de Freitas Diniz, Micaela Frasson Monteiro, Aloisio Felipe-Silva
Gastric adenocarcinoma is a common neoplasia and is responsible for up to 30% of the overall deaths due to cancer. Advanced disease is mostly characterized by peritoneum, liver, and lung involvement. The spread of the disease to the bone is rare, and bone marrow dissemination is even rarer. In this setting, leukoerythroblastosis may be the initial manifestation of the disease. The authors report the case of a 64-year-old Caucasian man who sought medical care complaining of back pain, weakness, and weight loss...
April 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/28740482/both-low-blood-glucose-and-insufficient-treatment-confer-risk-of-neurodevelopmental-impairment-in-congenital-hyperinsulinism-a-multinational-cohort-study
#5
Annett Helleskov, Maria Melikyan, Evgenia Globa, Inna Shcherderkina, Fani Poertner, Anna-Maria Larsen, Karen Filipsen, Klaus Brusgaard, Charlotte Dahl Christiansen, Lars Kjaersgaard Hansen, Henrik T Christesen
BACKGROUND/AIMS: Congenital hyperinsulinism (CHI) is a heterogeneous disease most frequently caused by KATP-channel (ABCC8 and KCNJ11) mutations, with neonatal or later onset, variable severity, and with focal or diffuse pancreatic involvement as the two major histological types. CHI confers a high risk of neurological impairment; however, sparsely studied in larger patient series. We assessed the neurodevelopmental outcome in children with CHI at follow-up in a mixed international cohort...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28739424/respiratory-viruses-in-transplant-recipients-more-than-just-a-cold-clinical-syndromes-and-infection-prevention-principles
#6
REVIEW
Salma Abbas, Jillian E Raybould, Sangeeta Sastry, Oveimar de la Cruz
OBJECTIVES: The aim of this review is to provide updated information on the clinical spectrum, treatment options, and infection prevention strategies for respiratory viral infections (RVI) in both solid organ (SOT) and hematopoietic stem cell transplant (HSCT) patients. METHODS: We searched the MEDLINE and Pubmed databases for literature regarding the aforementioned aspects of RVIs, with focus on respiratory syncytial virus, adenovirus, influenza, parainfluenza, human metapneumovirus and rhinovirus...
July 21, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28738782/space-and-space-time-distributions-of-dengue-in-a-hyper-endemic-urban-space-the-case-of-girardot-colombia
#7
Mauricio Fuentes-Vallejo
BACKGROUND: Dengue is a widely spread vector-borne disease. Dengue cases in the Americas have increased over the last few decades, affecting various urban spaces throughout these continents, including the tourism-oriented city of Girardot, Colombia. Interactions among mosquitoes, pathogens and humans have recently been examined using different temporal and spatial scales in attempts to determine the roles that social and ecological systems play in dengue transmission. The current work characterizes the spatial and temporal behaviours of dengue in Girardot and discusses the potential territorial dynamics related to the distribution of this disease...
July 24, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28738193/degree-of-keratinization-is-an-independent-prognostic-factor-in-oral-squamous-cell-carcinoma
#8
Susanne Wolfer, Stefan Elstner, Stefan Schultze-Mosgau
PURPOSE: Keratinization is a routinely reported histologic feature in head and neck cancer. In contrast to numerous clinicopathologic parameters, the prognostic value of keratinization in oral squamous cell carcinoma (OSCC) is rarely reported in the literature. The purpose of this study was to review the outcome of patients with OSCC with a special focus on the degree of keratinization. PATIENTS AND METHODS: In this retrospective cohort study, we evaluated the medical records at the Department of Oral and Maxillofacial Surgery, Jena University Hospital, and investigated the outcome of patients with OSCC with disease-free survival and disease-specific survival according to the degree of keratinization...
June 30, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28737767/sensitive-and-non-invasive-method-for-the-in-vivo-analysis-of-membrane-permeability-in-small-animals
#9
Andrea Fernandez-Carrera, Eva Vigo, Carla Regueiro-Rodríguez, África González-Fernández, David Olivieri, Luiz S Aroeira
Tissue membranes are boundaries that isolate organs or cavities in the body. These semi-permeable membranes are responsible for passive protection that acts through the regulation of nutrient absorption, secretion and filtration of small molecules. These functions could be altered as a consequence of inflammation or trauma, which in turn could lead to changes in permeability, allowing the entrance of toxins, antigens, proteins or facilitating the spread of tumors. Membrane permeability therefore plays an important role in numerous diseases...
July 24, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28737116/apoptotic-induction-induces-leishmania-aethiopica-and-l-mexicana-spreading-in-terminally-differentiated-thp-1-cells
#10
Rajeev Rai, Paul Dyer, Simon Richardson, Laurence Harbige, Giulia Getti
Leishmaniasis develops after parasites establish themselves as amastigotes inside mammalian cells and start replicating. As relatively few parasites survive the innate immune defence, intracellular amastigotes spreading towards uninfected cells is instrumental to disease progression. Nevertheless the mechanism of Leishmania dissemination remains unclear, mostly due to the lack of a reliable model of infection spreading. Here, an in vitro model representing the dissemination of Leishmania amastigotes between human macrophages has been developed...
July 24, 2017: Parasitology
https://www.readbyqxmd.com/read/28736265/preparing-for-emerging-infectious-diseases-in-the-perinatal-population
#11
Kathleen O'Rourke, Teresa Murphy, Sindhu K Srinivas, David A Pegues
The unprecedented scale of the 2014-2015 Ebola virus outbreak in West Africa and the recent emergence and rapid spread of Zika virus infection and resultant neonatal sequelae show that the geographic range, spread, and effect of emerging infections are unpredictable. Lessons learned from analyzing the response of an academic medical center to care for pregnant women with suspected or confirmed Ebola virus disease can help health care professionals address future threats from emerging infections.
July 19, 2017: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/28735858/asymmetric-disease-dynamics-in-multihost-interconnected-networks
#12
Shai Pilosof, Gili Greenbaum, Boris R Krasnov, Yuval R Zelnik
Epidemic spread in single-host systems strongly depends on the population's transmission network. However, little is known regarding the spread of epidemics across networks representing populations of multiple hosts. We explored cross-species transmission in a multilayer network where layers represent populations of two distinct hosts, and disease can spread across intralayer (within-host) and interlayer (between-host) edges. We developed an analytic framework for the SIR epidemic model to examine the effect of (i) source of infection and (ii) between-host asymmetry in infection probabilities, on disease risk...
July 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28735230/granulometry-microbial-composition-and-biological-activity-of-dusts-collected-in-french-dairy-farms
#13
Hugo Pfister, Claudie Morzadec, Pierre Le Cann, Laurent Madec, Valérie Lecureur, Martine Chouvet, Stéphane Jouneau, Laurent Vernhet
BACKGROUND: Dairy working increases the prevalence of lower airway respiratory diseases, especially COPD and asthma. Epidemiological studies have reported that chronic inhalation of organic dusts released during specific daily tasks could represent a major risk factor for development of these pathologies in dairy workers. Knowledge on size, nature and biological activity of such organic dusts remain however limited. OBJECTIVE: To compare size distribution, microbial composition and cellular effects of dusts liberated by the spreading of straw bedding in five French dairy farms located in Brittany...
July 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28734191/evolutionary-dynamics-of-recent-peste-des-petits-ruminants-virus-epidemic-in-china-during-2013-2014
#14
Jingyue Bao, Qinghua Wang, Lin Li, Chunju Liu, Zhicheng Zhang, Jinming Li, Shujuan Wang, Xiaodong Wu, Zhiliang Wang
Peste des petits ruminants virus (PPRV) causes a highly contagious disease, peste des petits ruminants (PPR), in sheep and goats which has been considered as a serious threat to the local economy in Africa and Asia. However, the in-depth evolutionary dynamics of PPRV during an epidemic is not well understood. We conducted phylogenetic analysis on genomic sequences of 25 PPRV strains from China 2013-2014 outbreaks. All these strains clustered into a novel clade in lineage 4. An evolutionary rate of 2.61 × 10(-6) nucleotide substitutions per site per day was estimated, dating the most recent common ancestor of PPRV China 2013-2014 strains to early August 2013...
July 19, 2017: Virology
https://www.readbyqxmd.com/read/28733861/an-infant-with-acute-gastroenteritis-caused-by-a-secondary-infection-with-a-rotarix-derived-strain
#15
Naomi Sakon, Ryohei Miyamoto, Jun Komano
Rotavirus vaccines have been successful in controlling severe diarrhea and have decreased deaths of young children globally. Rotarix and RotaTeq are the two currently available live-attenuated rotavirus vaccines. The vaccine virus can grow in a recipient's gut and spread from the vaccinee to naïve individuals. The potential for the emergence of revertant viruses is a concern with live-attenuated vaccines. We identified a previously healthy infant with severe acute gastroenteritis that was positive for rotavirus in a non-endemic season...
July 21, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28732048/wolbachia-and-dengue-virus-infection-in-the-mosquito-aedes-fluviatilis-diptera-culicidae
#16
Jéssica Barreto Lopes Silva, Debora Magalhães Alves, Vanessa Bottino-Rojas, Thiago Nunes Pereira, Marcos Henrique Ferreira Sorgine, Eric Pearce Caragata, Luciano Andrade Moreira
Dengue represents a serious threat to human health, with billions of people living at risk of the disease. Wolbachia pipientis is a bacterial endosymbiont common to many insect species. Wolbachia transinfections in mosquito disease vectors have great value for disease control given the bacterium's ability to spread into wild mosquito populations, and to interfere with infections of pathogens, such as dengue virus. Aedes fluviatilis is a mosquito with a widespread distribution in Latin America, but its status as a dengue vector has not been clarified...
2017: PloS One
https://www.readbyqxmd.com/read/28731049/composite-hemangioendothelioma-with-neuroendocrine-marker-expression-an-aggressive-variant
#17
Kyle D Perry, Alyaa Al-Lbraheemi, Brian P Rubin, Jin Jen, Hongzheng Ren, Jin Sung Jang, Asha Nair, Jaime Davila, Stefan Pambuccian, Andrew Horvai, William Sukov, Henry D Tazelaar, Andrew L Folpe
Aberrant expression of neuroendocrine markers is extremely rare in endothelial neoplasms, with only a single report describing three cases. Although originally classified as conventional angiosarcoma, further assessment of these tumors revealed a strikingly composite morphology composed of retiform and epithelioid elements reminiscent of composite hemangioendothelioma, a rare subtype of hemangioendothelioma. To further investigate these findings, available materials from 11 morphologically distinctive endothelial tumors showing neuroendocrine marker expression were retrieved from our archives...
July 21, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28729922/meningococcal-disease-outbreak-related-to-the-world-scout-jamboree-in-japan-2015
#18
Mizue Kanai, Hajime Kamiya, Alison Smith-Palmer, Hideyuki Takahashi, Yushi Hachisu, Munehisa Fukusumi, Takehito Saitoh, Makoto Ohnishi, Tomimasa Sunagawa, Tamano Matsui, Kazunori Oishi
PROBLEM: Six invasive meningococcal disease cases occurred among Scottish and Swedish nationals associated with the World Scout Jamboree (WSJ), an international mass gathering, held in Japan. The index case developed symptoms while returning home. The strains from all six cases were identical and seldom seen in Japan. CONTEXT: Over 33 000 participants from 155 countries attended WSJ. At the Jamboree site, participants of the North of Scotland's and Sweden's units camped within the same subcamp and kept the same schedule of events...
April 2017: Western Pacific Surveillance and Response Journal: WPSAR
https://www.readbyqxmd.com/read/28729867/exposure-to-the-epstein-barr-viral-antigen-latent-membrane-protein-1-induces-myelin-reactive-antibodies-in-vivo
#19
Yakov Lomakin, Georgii Pavlovich Arapidi, Alexander Chernov, Rustam Ziganshin, Evgenii Tcyganov, Irina Lyadova, Ivan Olegovich Butenko, Maria Osetrova, Natalia Ponomarenko, Georgy Telegin, Vadim Markovich Govorun, Alexander Gabibov, Alexey Belogurov
Multiple sclerosis (MS) is an autoimmune chronic inflammatory disease of the central nervous system (CNS). Cross-reactivity of neuronal proteins with exogenous antigens is considered one of the possible mechanisms of MS triggering. Previously, we showed that monoclonal myelin basic protein (MBP)-specific antibodies from MS patients cross-react with Epstein-Barr virus (EBV) latent membrane protein 1 (LMP1). In this study, we report that exposure of mice to LMP1 results in induction of myelin-reactive autoantibodies in vivo...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28729557/antifungal-treatment-of-wild-amphibian-populations-caused-a-transient-reduction-in-the-prevalence-of-the-fungal-pathogen-batrachochytrium-dendrobatidis
#20
Corina C Geiger, Cindy Bregnard, Elodie Maluenda, Maarten J Voordouw, Benedikt R Schmidt
Emerging infectious diseases can drive host populations to extinction and are a major driver of biodiversity loss. Controlling diseases and mitigating their impacts is therefore a priority for conservation science and practice. Chytridiomycosis is a devastating disease of amphibians that is caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd), and for which there is an urgent need to develop mitigation methods. We treated tadpoles of the common midwife toad (Alytes obstetricans) with antifungal agents using a capture-treat-release approach in the field...
July 20, 2017: Scientific Reports
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