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https://www.readbyqxmd.com/read/29351764/quantification-and-kinetics-of-viral-rna-transcripts-produced-in-orthohantavirus-infected-cells
#1
Julia Wigren Byström, Jonas Näslund, Fredrik Trulsson, Magnus Evander, Olivia Wesula Lwande, Clas Ahlm, Göran Bucht
BACKGROUND: Rodent borne viruses of the Orthohantavirus genus cause hemorrhagic fever with renal syndrome among people in Eurasia, and hantavirus cardiopulmonary syndrome in the Americas. At present, there are no specific treatments or efficient vaccines against these diseases. Improved understanding of viral transcription and replication may instigate targeted treatment of Orthohantavirus infections. For this purpose, we investigated the kinetics and levels of viral RNA transcription during an ongoing infection in-vitro...
January 19, 2018: Virology Journal
https://www.readbyqxmd.com/read/29350373/pediatric-dural-venous-sinus-thrombosis-following-closed-head-injury-an-easily-overlooked-diagnosis-with-devastating-consequences
#2
Joe M Das, Rashmi Sapkota, Binjura Shrestha
Dural venous sinus thrombosis (DVST) is an uncommon finding after traumatic brain injury. The diagnosis can often be initially missed, particularly if not associated with an overlying fracture. Pediatric DVST following closed head injury and without an overlying fracture is very rare, with only 20 cases reported in the literature to date. Here we present the case of a 19-month-old boy who presented with a history of trivial fall and an episode of fever. On presentation, the pediatric Glasgow Coma Scale (pGCS) score was E3V4M6, and initial brain computed tomography (CT) was normal...
January 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29350137/multiplex-pcr-based-next-generation-sequencing-and-global-diversity-of-seoul-virus-in-humans-and-rats
#3
Won-Keun Kim, Jin Sun No, Seung-Ho Lee, Dong Hyun Song, Daesang Lee, Jeong-Ah Kim, Se Hun Gu, Sunhye Park, Seong Tae Jeong, Heung-Chul Kim, Terry A Klein, Michael R Wiley, Gustavo Palacios, Jin-Won Song
Seoul virus (SEOV) poses a worldwide public health threat. This virus, which is harbored by Rattus norvegicus and R. rattus rats, is the causative agent of hemorrhagic fever with renal syndrome (HFRS) in humans, which has been reported in Asia, Europe, the Americas, and Africa. Defining SEOV genome sequences plays a critical role in development of preventive and therapeutic strategies against the unique worldwide hantavirus. We applied multiplex PCR-based next-generation sequencing to obtain SEOV genome sequences from clinical and reservoir host specimens...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29348171/a-cationic-c-terminal-patch-and-structural-rearrangements-in-ebola-virus-matrix-vp40-protein-control-its-interactions-with-phosphatidylserine
#4
Kathryn Del Vecchio, Cary T Frick, Jeevan B Gc, Shun-Ichiro Oda, Bernard S Gerstman, Erica Ollmann Saphire, Prem P Chapagain, Robert V Stahelin
Ebola virus (EBOV) is a filamentous lipid-enveloped virus that causes hemorrhagic fever with a high fatality rate. Viral protein 40 (VP40) is the major EBOV matrix protein and regulates viral budding from the plasma membrane. VP40 is a transformer/morpheein that can structurally rearrange its native homodimer into either a hexameric filament that facilitates viral budding or a RNA-binding octameric ring that regulates viral transcription. VP40 associates with plasma-membrane lipids such as phosphatidylserine (PS), and this association is critical to budding from the host cell...
January 18, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29340221/recombinant-antibodies-to-the-ebola-virus-glycoprotein
#5
A A Panina, I G Dementieva, T K Aliev, V A Toporova, D S Balabashin, M N Bokov, L P Pozdnyakova, O B Shchemchukova, D A Dolgikh, P G Sveshnikov, M P Kirpichnikov
Currently, there are no approved therapies for targeted prevention and treatment of Ebola hemorrhagic fever. In the present work, we describe the development of a eukaryotic expression system for the production of three full-length chimeric antibodies (IgG1-kappa isotypes) GPE118, GPE325, and GPE534 to the recombinant glycoprotein of the Ebola virus (EBOV GP), which is a key factor in the pathogenicity of the disease. The immunochemical properties of the obtained antibodies were studied by immunoblotting and indirect, direct, and competitive ELISA using the recombinant EBOV proteins rGPdTM, NP, and VP40...
October 2017: Acta Naturae
https://www.readbyqxmd.com/read/29338543/lucidone-suppresses-dengue-viral-replication-through-the-induction-of-heme-oxygenase-1
#6
Wei-Chun Chen, Chin-Kai Tseng, Chun-Kuang Lin, Shen-Nien Wang, Wen-Hung Wang, Shih-Hsien Hsu, Yu-Hsuan Wu, Ling-Chien Hung, Yen-Hsu Chen, Jin-Ching Lee
Dengue virus (DENV) infection causes life-threatening diseases such as dengue hemorrhagic fever and dengue shock syndrome. Currently, there is no effective therapeutic agent or vaccine against DENV infection; hence, there is an urgent need to discover anti-DENV agents. The potential therapeutic efficacy of lucidone was first evaluated in vivo using a DENV-infected Institute of Cancer Research (ICR) suckling mouse model by monitoring body weight, clinical score, survival rate, and viral titer. We found that lucidone effectively protected mice from DENV infection by sustaining survival rate and reducing viral titers in DENV-infected ICR suckling mice...
January 17, 2018: Virulence
https://www.readbyqxmd.com/read/29337162/antiviral-activity-of-k22-against-members-of-the-order-nidovirales
#7
Julie Christiane Françoise Rappe, Adriaan de Wilde, Han Di, Christin Müller, Hanspeter Stalder, Philip V'kovski, Eric Snijder, Margo A Brinton, John Ziebuhr, Nicolas Ruggli, Volker Thiel
Recently, a novel antiviral compound (K22) that inhibits replication of a broad range of animal and human coronaviruses was reported to interfere with viral RNA synthesis by impairing double-membrane vesicle (DMV) formation (Lundin et al., 2014). Here we assessed potential antiviral activities of K22 against a range of viruses representing two (sub)families of the order Nidovirales, the Arteriviridae (porcine reproductive and respiratory syndrome virus [PRRSV], equine arteritis virus [EAV] and simian hemorrhagic fever virus [SHFV]), and the Torovirinae (equine torovirus [EToV] and White Bream virus [WBV])...
January 11, 2018: Virus Research
https://www.readbyqxmd.com/read/29336707/kyasanur-forest-disease-prevalence-in-western-ghats-proven-and-confirmed-by-recent-outbreak-in-maharashtra-india-2016
#8
Yogesh K Gurav, Pragya D Yadav, Mangesh D Gokhale, Tushar R Chiplunkar, Rajlakshmi Vishwanathan, Deepak Y Patil, Rajlaxmi Jain, Anita M Shete, Savita L Patil, G D Sarang, Gajanan N Sapkal, M D Andhare, Y R Sale, Pradeep S Awate, Devendra T Mourya
INTRODUCTION: Kyasanur forest disease (KFD) outbreak was confirmed in Dodamarg Taluka, Sindhudurga district (Maharashtra) in India during the year 2016. The rise in suspected KFD cases was reported in January 2016, peaked during March, and then declined gradually from April 2016. The outbreak was thoroughly investigated considering different socio-clinical parameters. METHODS: Total, 488 suspected KFD cases were investigated using KFD specific real-time RT-PCR and anti-KFDV IgM enzyme-linked immunosorbent assay (ELISA)...
January 16, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29335595/mapping-the-epidemic-changes-and-risks-of-hemorrhagic-fever-with-renal-syndrome-in-shaanxi-province-china-2005-2016
#9
Weifeng Liang, Xu Gu, Xue Li, Kangjun Zhang, Kejian Wu, Miaomiao Pang, Jianhua Dong, Hunter R Merrill, Tao Hu, Kun Liu, Zhongjun Shao, Hong Yan
Hemorrhagic fever with renal syndrome (HFRS) is a major rodent-borne zoonosis. Each year worldwide, 60,000-100,000 HFRS human cases are reported in more than seventy countries with almost 90% these cases occurring in China. Shaanxi Province in China has been among the most seriously affected areas since 1955. During 2009-2013, Shaanxi reported 11,400 human cases, the most of all provinces in China. Furthermore, the epidemiological features of HFRS have changed over time. Using long-term data of HFRS from 2005 to 2016, we carried out this retrospective epidemiological study combining ecological assessment models in Shaanxi...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330092/a-novel-double-antigen-sandwich-elisa-for-the-species-independent-detection-of-crimean-congo-hemorrhagic-fever-virus-specific-antibodies
#10
Miriam A Sas, Loic Comtet, Fabien Donnet, Marc Mertens, Zati Vatansever, Noel Tordo, Philippe Pourquier, Martin H Groschup
Crimean-Congo hemorrhagic fever (CCHF) is a tick-borne disease in humans caused by the CCHF virus (CCHFV). The detection of anti-CCHFV antibodies in animals is used to reveal infection risk areas. Therefore a simple, quick and reliable multispecies assay for the detection of CCHFV-specific antibodies is needed. This work presents the development and validation of a novel CCHF double-antigen ELISA for the detection of anti-CCHFV nucleoprotein antibodies. The test requires 30 μl of serum, and results are obtained within 90 min...
January 9, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29329512/landscape-and-rodent-community-composition-are-associated-with-risk-of-hemorrhagic-fever-with-renal-syndrome-in-two-cities-in-china-2006-2013
#11
Hong Xiao, Xin Tong, Ru Huang, Lidong Gao, Shixiong Hu, Yapin Li, Hongwei Gao, Pai Zheng, Huisuo Yang, Zheng Y X Huang, Hua Tan, Huaiyu Tian
BACKGROUND: Hemorrhagic fever with renal syndrome (HFRS) is a rodent-borne disease caused by hantaviruses. Landscape can influence the risk of hantavirus infection for humans, mainly through its effect on rodent community composition and distribution. It is important to understand how landscapes influence population dynamics for different rodent species and the subsequent effect on HFRS risk. METHODS: To determine how rodent community composition influenced human hantavirus infection, we monitored rodent communities in the prefecture-level cities of Loudi and Shaoyang, China, from 2006 to 2013...
January 12, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29321318/viperin-restricts-zika-virus-and-tick-borne-encephalitis-virus-replication-by-targeting-ns3-for-proteasomal-degradation
#12
Christakis Panayiotou, Richard Lindqvist, Chaitanya Kurhade, Kirstin Vonderstein, Jenny Pasto, Karin Edlund, Arunkumar S Upadhyay, Anna K Överby
Flaviviruses are arthropod-borne viruses that constitute a major global health problem, with millions of human infections annually. Their pathogenesis ranges from mild illness to severe manifestations such as hemorrhagic fever and fatal encephalitis. Type I interferons (IFNs) are induced in response to viral infection, and stimulate the expression of interferon-stimulated genes (ISGs), including that encoding viperin (virus-inhibitory protein, endoplasmic reticulum-associated, IFN-inducible), which shows antiviral activity against a broad spectrum of viruses including several flaviviruses...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29319426/dengue-hemorrhagic-fever-virus-in-saudi-arabia-a-review
#13
Jaffar A Al-Tawfiq, Ziad A Memish
Dengue fever is a global disease with a spectrum of clinical manifestation ranging from mild febrile disease to a severe disease in the form of dengue hemorrhagic fever and dengue shock syndrome. Dengue virus is one viral hemorrhagic fever that exists in the Kingdom of Saudi Arabia in addition to Alkhurma (Alkhurma) Hemorrhagic Fever, Chikungunya virus, Crimean-Congo Hemorrhagic Fever, and Rift Valley Fever. The disease is limited to the Western and South-western regions of Saudi Arabia, where Aedes aegypti exists...
January 10, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29315647/antiviral-activity-of-a771726-the-active-metabolite-of-leflunomide-against-jun%C3%A3-n-virus
#14
Claudia S Sepúlveda, Cybele C García, Elsa B Damonte
The aim of this study was to investigate the effect of A771726, the active metabolite of leflunomide, against the infection with Junín virus (JUNV), agent of Argentine hemorrhagic fever (AHF). The treatment with non-cytotoxic concentrations of A771726 of Vero and A549 cells infected with JUNV inhibited virus replication in a dose-dependent manner, as determined by virus yield reduction assay. The antiviral effectiveness of A771726 was not importantly affected by the multiplicity of infection and the virus strain...
January 5, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29312814/on-revealing-the-gene-targets-of-ebola-virus-micrornas-involved-in-the-human-skin-microbiome
#15
Pei-Chun Hsu, Bin-Hao Chiou, Chun-Ming Huang
Ebola virus, a negative-sense single-stranded RNA virus, causes severe viral hemorrhagic fever and has a high mortality rate. Histopathological and immunopathological analyses of Ebola virus have revealed that histopathological changes in skin tissue are associated with various degrees of endothelial cell swelling and necrosis. The interactions of microbes within or on a host are a crucial for the skin immune shield. The discovery of microRNAs (miRNAs) in Ebola virus implies that immune escape, endothelial cell rupture, and tissue dissolution during Ebola virus infection are a result of the effects of Ebola virus miRNAs...
2018: PeerJ
https://www.readbyqxmd.com/read/29312721/retrospective-review-of-the-diagnosis-and-treatment-of-pulmonary-sequestration-in-28-patients-surgery-or-endovascular-techniques
#16
Shi-Xin Zhang, Hai-Dong Wang, Kang Yang, Wei Cheng, Wei Wu
Background: Pulmonary sequestration (PS) is a rare congenital pulmonary malformation. In this study, we aimed to retrospect and evaluate the diagnosis, treatment, and outcomes of PS in 28 patients at our institute. Methods: The files of 28 patients with PS who were treated with surgery (21 cases) or endovascular intervention (7 cases) between May 2005 and June 2016 from a single institute were retrospectively reviewed. The following data of all patients were analyzed: age, sex, clinical symptoms, diagnostic methods, operative techniques, and treatment outcomes...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29310747/population-based-seroprevalence-of-puumala-hantavirus-in-finland-smoking-as-a-risk-factor
#17
F Latronico, S Mäki, H Rissanen, J Ollgren, O Lyytikäinen, O Vapalahti, J Sane
Puumala hantavirus (PUUV) causes hemorrhagic fever with renal syndrome in humans, that is an endemic disease in Finland. We estimated the seroprevalence of PUUV in Finland and explored risk factors and disease associations by using unique survey data with health register linkage. A total of 2000 sera from a nationwide health survey from 2011, representative of the adult population, were screened for PUUV IgG by immunofluorescence assay. We performed statistical analysis adjusting for stratified cluster design and taking into account sampling weights...
January 9, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29302526/epidemiological-characteristics-of-dengue-disease-in-saurashtra-region-india-during-year-2015
#18
Madhulika Mistry, Rajesh K Chudasama, Yogesh Goswami, Chintan Dalwadi, Aarohi Mitra, Garima Mehta
Background: Dengue is an important vector-borne disease with a spectrum of classical fever to hemorrhagic fever to dengue shock syndrome. The present study was conducted with objective to study epidemiological and demographic characteristics of dengue infections during the year 2015 in Saurashtra region, Gujarat state, India. Materials and Methods: The study was conducted at Tertiary Care Hospital, Rajkot, during the year 2015. A total of 3312 blood samples were collected and tested for dengue NS1 antigen and IgM antibody by capture ELISA testing from various districts of Saurashtra region...
April 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29299882/-about-98-cases-of-dengue-hospitalized-in-a-private-clinic-of-ouagadougou-epidemiology-diagnostic-and-evolution
#19
I Diallo, K A Sondo, H Tieno, E Y Tamelokpo, J Zoungrana, Y Sagna, M Savadogo, A Poda, O Guira, E A Diendéré, J Sakandé, Y J Drabo
Extremely widespread, the dengue is a reemerging infectious disease. In Burkina Faso, dengue is a reality that was little known. The aim of this study was to study epidemiology, diagnostic and outcomes of dengue patients in Ouagadougou. A retrospective study covered a period of two years, from 1 January 2013 to 31 December 2014 in a private clinic in Ouagadougou. Patients included in the study were hospitalized for fever and painful syndrome with a positive test to the dengue non-structural antigen 1 (NS1 Ag)...
December 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/29298405/ultrastructural-features-of-alkhumra-hemorrhagic-fever-virus-infection-of-cells-under-in-vivo-and-in-vitro-conditions
#20
Tariq A Madani, El-Tayb M E Abuelzein, Huda Abu-Araki, Soad S Ali, Sawsan M Jalalah, Ahmed M Hassan, Hussein M S Al-Bar, Esam I Azhar
Alkhumra hemorrhagic fever virus (AHFV) is an emerging novel flavivirus that was discovered in Saudi Arabia in 1995. The virus has since caused several outbreaks in the country that resulted in case fatality rates ranging from 1% to 25%. Meager information has been published on the ultrastructural features of the virus on cells under in vitro or in vivo conditions. The present electron microscopic study examined and compared the intracellular growth of the AHFV on the LLC-MK2 cells and brain cells of new born Wistar rats, inoculated intracerebrally...
January 3, 2018: Vector Borne and Zoonotic Diseases
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