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https://www.readbyqxmd.com/read/28640917/human-hantavirus-infection-elicits-pronounced-redistribution-of-mononuclear-phagocytes-in-peripheral-blood-and-airways
#1
Saskia Scholz, Faezzah Baharom, Gregory Rankin, Kimia T Maleki, Shawon Gupta, Sindhu Vangeti, Jamshid Pourazar, Andrea Discacciati, Jonas Höijer, Matteo Bottai, Niklas K Björkström, Johan Rasmuson, Magnus Evander, Anders Blomberg, Hans-Gustaf Ljunggren, Jonas Klingström, Clas Ahlm, Anna Smed-Sörensen
Hantaviruses infect humans via inhalation of virus-contaminated rodent excreta. Infection can cause severe disease with up to 40% mortality depending on the viral strain. The virus primarily targets the vascular endothelium without direct cytopathic effects. Instead, exaggerated immune responses may inadvertently contribute to disease development. Mononuclear phagocytes (MNPs), including monocytes and dendritic cells (DCs), orchestrate the adaptive immune responses. Since hantaviruses are transmitted via inhalation, studying immunological events in the airways is of importance to understand the processes leading to immunopathogenesis...
June 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28636653/the-ebola-virus-vp35-protein-binds-viral-immunostimulatory-and-host-rnas-identified-through-deep-sequencing
#2
Kari A Dilley, Alexander A Voorhies, Priya Luthra, Vinita Puri, Timothy B Stockwell, Hernan Lorenzi, Christopher F Basler, Reed S Shabman
Ebola virus and Marburg virus are members of the Filovirdae family and causative agents of hemorrhagic fever with high fatality rates in humans. Filovirus virulence is partially attributed to the VP35 protein, a well-characterized inhibitor of the RIG-I-like receptor pathway that triggers the antiviral interferon (IFN) response. Prior work demonstrates the ability of VP35 to block potent RIG-I activators, such as Sendai virus (SeV), and this IFN-antagonist activity is directly correlated with its ability to bind RNA...
2017: PloS One
https://www.readbyqxmd.com/read/28630325/convergent-immunological-solutions-to-argentine-hemorrhagic-fever-virus-neutralization
#3
Antra Zeltina, Stefanie A Krumm, Mehmet Sahin, Weston B Struwe, Karl Harlos, Jack H Nunberg, Max Crispin, Daniel D Pinschewer, Katie J Doores, Thomas A Bowden
Transmission of hemorrhagic fever New World arenaviruses from their rodent reservoirs to human populations poses substantial public health and economic dangers. These zoonotic events are enabled by the specific interaction between the New World arenaviral attachment glycoprotein, GP1, and cell surface human transferrin receptor (hTfR1). Here, we present the structural basis for how a mouse-derived neutralizing antibody (nAb), OD01, disrupts this interaction by targeting the receptor-binding surface of the GP1 glycoprotein from Junín virus (JUNV), a hemorrhagic fever arenavirus endemic in central Argentina...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28628220/importance-of-endothelial-dysfunction-biomarkers-in-patients-with-crimean-congo-hemorrhagic-fever
#4
Mustafa Arslan, Gürdal Yilmaz, Ahmet Mentese, Hülya Yilmaz, S Caner Karahan, Iftihar Koksal
BACKGROUND: The pathogenesis of the Crimean-Congo hemorrhagic fever (CCHF) and the cause of the hemorrhage are not yet fully understood. However, the endothelium plays a key role in the pathogenesis. The purpose of this study was to investigate endothelial dysfunction markers [asymmetrical dimethyl arginine(ADMA), endothelin 1(ET-1), thrombomodulin(TM), von Willebrand factor(vWf) and intercellular adhesion molecule(ICAM-1)] in serum in patients with CCHF and their associations with hemorrhage...
June 19, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28628025/-phenotype-facilities-of-lymphocytes-in-hemorrhagic-fever-with-renal-syndrome
#5
M Ivanov, I Balmasova, Z Vasnyova
Hemorrhagic fever with renal syndrome (HFRS) is a feral herd disease caused by hantaviruses. HERS may be severe and its manifestations include acute renal failure, intoxication, hemorrhages and pain syndrome. Hantaviruses as pathogen of HFRS wield considerable influence on the character of the immune response, in particular, is capable of lymphocytic cytolysis suppressing. It was found that cytotoxic T lymphocytes along with NKT and CD8 + regulatory T cells play the key role in the immune mechanisms of hemorrhagic fever with renal syndrome...
May 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28622346/flavivirus-and-filovirus-evoprinters-new-alignment-tools-for-the-comparative-analysis-of-viral-evolution
#6
Thomas Brody, Amarendra S Yavatkar, Dong Sun Park, Alexander Kuzin, Jermaine Ross, Ward F Odenwald
BACKGROUND: Flavivirus and Filovirus infections are serious epidemic threats to human populations. Multi-genome comparative analysis of these evolving pathogens affords a view of their essential, conserved sequence elements as well as progressive evolutionary changes. While phylogenetic analysis has yielded important insights, the growing number of available genomic sequences makes comparisons between hundreds of viral strains challenging. We report here a new approach for the comparative analysis of these hemorrhagic fever viruses that can superimpose an unlimited number of one-on-one alignments to identify important features within genomes of interest...
June 16, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28619306/management-of-viral-oral-ulcers-in-children-using-chinese-herbal-medicine-a-report-of-two-cases
#7
Yi-Chiao Lee, Ting-Hao Wang, Shih-Yu Chen, Hsiang-Ling Lin, Ming-Yen Tsai
OBJECTIVE: Viral oral ulcers are common presentations in pediatric clinics. Although self-limiting, painful ulcerative lesions and inflamed mucosa can decrease oral intake and lead to dehydration. Despite the widespread use of Chinese herbal medicine (CHM) for pediatric upper respiratory disease in Taiwan, there is little evidence for its effectiveness as an antipyretic or in aiding ulcer healing for children with viral oral ulcers. We report two cases of children who presented with viral oral ulcers to illustrate the potential efficacy of CHM treatment in recovery from herpangina (HA) and herpetic gingivostomatitis (HGS)...
June 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28613285/dengue-hemorrhagic-fever-in-the-northwest-of-mexico-a-two-decade-analysis
#8
Vania Serrano-Pinto, Manuel Moreno-Legorretara
BACKGROUND: In Baja California Sur, Mexico, there are no records of dengue hemorrhagic fever in the state before 1995. Until now, there have been no published reports on the incidence rate. OBJECTIVE: To assess the incidence rate of dengue hemorrhagic fever in Baja California Sur in the last two decades. METHODS: We analyzed data on the total number of cases in the general population, incidence rate, age groups, gender, serotypes, and mortality data...
May 2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28612239/dengue-hemorrhagic-fever-a-state-of-the-art-review-focused-in-pulmonary-involvement
#9
REVIEW
Renata Rocha de Almeida, Bernardo Paim, Solange Artimos de Oliveira, Arthur Soares Souza, Antônio Carlos Portugal Gomes, Dante Luiz Escuissato, Gláucia Zanetti, Edson Marchiori
Dengue fever is an arboviral disease transmitted to humans through the bites of infected female Aedes mosquitoes. Dengue virus is a member of the Flaviviridae family, and human infection can be caused by any of the four antigenically distinct serotypes (DENV 1-4). The infection has become recognized as the most important and prevalent arboviral disease in humans, endemic in almost 100 countries worldwide. Nearly 3 billion people live in areas with transmission risk. Autochthonous transmission of the virus in previously disease-free areas, increased incidence in endemic areas, and epidemic resurgence in controlled regions could increase the risk of contracting more severe forms of the disease, such as dengue hemorrhagic fever (DHF)/dengue shock syndrome (DSS)...
June 13, 2017: Lung
https://www.readbyqxmd.com/read/28611428/deep-sequencing-of-marburg-virus-genome-during-sequential-mouse-passaging-and-cell-culture-adaptation-reveals-extensive-changes-over-time
#10
Haiyan Wei, Jonathan Audet, Gary Wong, Shihua He, Xueyong Huang, Todd Cutts, Steven Theriault, Bianli Xu, Gary Kobinger, Xiangguo Qiu
Marburg virus (MARV) has caused outbreaks of filoviral hemorrhagic fever since its discovery in 1967. The largest and deadliest outbreak occurred in Angola in 2005, with 252 cases and 227 deaths. In 2014, we developed a mouse-adapted MARV, Angola variant through serial passaging in mice. The mouse-adapted MARV exhibits many of the hallmarks of MARV disease in humans. By applying deep-sequencing to every passage of the virus, we are able to study virus evolution in this host with surprising precision. We show that two regions go through substantial changes: the intergenic region between NP and VP35, as well as the first 100 amino acids of the VP40 protein...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28609169/a-gap-analysis-of-the-united-states-death-care-sector-to-determine-training-and-education-needs-pertaining-to-highly-infectious-disease-mitigation-and-management
#11
Aurora B Le, Lesley Witter, Jocelyn J Herstein, Katelyn C Jelden, Elizabeth Beam, Shawn G Gibbs, John J Lowe
PURPOSE: A United States industry-specific gap analysis survey of the death care sector-which comprises organizations and businesses affiliated with the funeral industry and the handling of human remains- was developed, the results analyzed, and training and education needs in relation to highly infectious disease mitigation and management were explored in an effort to identify where occupational health and safety can be enhanced in this worker population. METHODS: Collaborating national death care organizations distributed the 47-question electronic survey...
June 13, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28605299/crimean-congo-hemorrhagic-fever-virus-specific-antibody-detection-in-cattle-in-mauritania
#12
Miriam A Sas, Marc Mertens, Ekaterina Isselmou, Nicole Reimer, Bezeid O El Mamy, Baba Doumbia, Martin H Groschup
BACKGROUND: Crimean-Congo hemorrhagic fever virus (CCHFV) was detected for the first time in Mauritania in 1983 and several CCHFV outbreaks were reported in the following years. The last human case was diagnosed in 2015. However, no recent data exist about the prevalence of CCHFV in animals, although it is already described that prevalence studies in animals serve as good risk indicators. CCHFV can cause a severe hemorrhagic fever with a high case fatality rate in humans. Therefore, a precise risk assessment on the basis of updated data is very important...
June 12, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28603698/crimean-congo-hemorrhagic-fever-tick-host-virus-interactions
#13
REVIEW
Anna Papa, Katerina Tsergouli, Katerina Tsioka, Ali Mirazimi
Crimean-Congo hemorrhagic fever virus (CCHFV) is transmitted to humans by bite of infected ticks or by direct contact with blood or tissues of viremic patients or animals. It causes to humans a severe disease with fatality up to 30%. The current knowledge about the vector-host-CCHFV interactions is very limited due to the high-level containment required for CCHFV studies. Among ticks, Hyalomma spp. are considered the most competent virus vectors. CCHFV evades the tick immune response, and following its replication in the lining of the tick's midgut, it is disseminated by the hemolymph in the salivary glands and reproductive organs...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28603449/filoviruses-and-bats
#14
Amy J Schuh, Brian R Amman, Jonathan S Towner
While Reston and Lloviu viruses have never been associated with human disease, the other filoviruses cause outbreaks of hemorrhagic fever characterised by person-to-person transmission and high case fatality ratios. Cumulative evidence suggests that bats are the most likely reservoir hosts of the filoviruses. Ecological investigations following Marburg virus disease outbreaks associated with entry into caves inhabited by Rousettus aegyptiacus bats led to the identification of this bat species as the natural reservoir host of the marburgviruses...
March 2017: Microbiology Australia
https://www.readbyqxmd.com/read/28598127/-correlations-between-aml1-eto-fusion-gene-and-clinical-features-of-acute-myeloid-leukemia-in-sichuan
#15
Xue-Mei Wang, Yuan-Xin Ye, Lian Yang, Xiao-Jun Lu, Bin-Wu Ying
OBJECTIVES: To determine the correlations between AML1-ETO fusion gene and clinical characteristics of patients with AML,and its association with the prognosis of AML-M2. METHODS: Medical records of 94 AML-M2 cases with positive AML1-ETO fusion gene and 51 AML-M2 cases with negative AML1-ETO gene were retrospective reviewed.Their clinical characteristics,treatment responses and prognostic outcomes were compared. RESULTS: No significant differences in the clinical symptoms,predominantly anemia,fever and hemorrhage,were found between the AML1-ETO fusion gene positive and negative AML-M2 (P>0...
November 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28598064/emphysematous-gastritis-with-air-in-portal-venous-system
#16
Omesh Goyal, Ajesh Bansal, Prerna Goyal
Emphysematous gastritis is a rare but severe form of phlegmonous gastritis caused by gastric mucosal disruption and infection of stomach wall by gas-forming bacteria. Ingestion of corrosive substances is the most common predisposing factor, followed by alcohol abuse, abdominal surgery, diabetes and immunosuppression. Patients usually present with abdominal pain, vomiting, diarrhea, constipation and/or gastro-intestinal hemorrhage. Characteristic radiological findings include presence of gas in the gastric wall...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28596655/a-correlation-of-the-platelet-count-with-d-dimer-levels-as-an-indicator-for-component-therapy-in-children-with-dengue-hemorrhagic-fever
#17
Arthi Sridhar, B M Sunil Kumar, Aarathi Rau, A T K Rau
Dengue Fever (DF) may evolve into two life threatening forms-Dengue Hemorrhagic Fever (DHF) and Dengue Shock Syndrome (DSS). DHF is associated with increased vascular permeability and plasma leakage causing thrombocytopenia and loss of clotting factors into the third space and may result in bleeding initially due to thrombocytopenia and later due to disseminated intravascular coagulation (DIC), often as a terminal event. Prompt recognition and treatment of minor bleeds in DF children with incipient DIC with component therapy may be associated with improved survival while failure to do so is usually catastrophic...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28596387/draft-genome-sequences-of-eight-crimean-congo-hemorrhagic-fever-virus-strains
#18
J W Koehler, K L Delp, B J Kearney, T A Conrad, R J Schoepp, A R Garrison, L A Altamura, C A Rossi, T D Minogue
Crimean-Congo hemorrhagic fever virus (CCHFV) is a geographically widespread RNA virus with a high degree of genomic diversity that complicates sequence-based diagnostics. Here, we sequenced eight CCHFV strains for improved assay design and deposition into FDA-ARGOS, the FDA's pathogen database for development and verification of next generation sequencing assays.
June 8, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28592316/the-influence-of-climatic-factors-on-the-development-of-hemorrhagic-fever-with-renal-syndrome-and-leptospirosis-during-the-peak-season-in-korea-an-ecologic-study
#19
Yadav Prasad Joshi, Eun-Hye Kim, Hae-Kwan Cheong
BACKGROUND: Hemorrhagic fever with renal syndrome (HFRS) and leptospirosis are seasonal rodent-borne infections in the Republic of Korea (Korea). The occurrences of HFRS and leptospirosis are influenced by climatic variability. However, few studies have examined the effects of local climatic variables on the development of these infections. The purpose of this study was to estimate the effect of climatic factors on the occurrence of HFRS and leptospirosis in Korea. METHODS: Daily records on human cases of HFRS and leptospirosis between January 2001 to December 2009 were analyzed...
June 7, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28591408/decrease-in-dengue-virus-2-infection-and-reduction-of-cytokine-chemokine-production-by-uncaria-guianensis-in-human-hepatocyte-cell-line-huh-7
#20
Cíntia da Silva Mello, Ligia Maria Marino Valente, Thiago Wolff, Raimundo Sousa Lima-Junior, Luciana Gomes Fialho, Cintia Ferreira Marinho, Elzinandes Leal Azeredo, Luzia Maria Oliveira-Pinto, Rita de Cássia Alves Pereira, Antonio Carlos Siani, Claire Fernandes Kubelka
BACKGROUND: Dengue fever may present hemorrhages and cavitary effusions as result of exacerbated immune responses. We investigated hydro-alcoholic extracts from leaves (UGL) and bark (UGB) of the medicinal species Uncaria guinanensis with respect to antiviral effects in Dengue virus (DENV) infection and in immunological parameters associated with in vivo physiopathological features. METHODS: Chemical profiles from UGB or UGL were compared in thin layer chromatography and 1H nuclear magnetic resonance using flavonoid compounds and a pentacyclic oxindole alkaloid-enriched fraction as references...
June 2017: Memórias do Instituto Oswaldo Cruz
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