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https://www.readbyqxmd.com/read/29352664/oral-corticosteroids-reduce-length-of-hospital-stay-for-preschool-children-with-virus-associated-wheeze
#1
Joseph J Zorc
No abstract text is available yet for this article.
January 15, 2018: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/29352633/current-concerns-and-perspectives-on-zika-virus-co-infection-with-arboviruses-and-hiv
#2
REVIEW
Hussin A Rothan, Mehdi R M Bidokhti, Siddappa N Byrareddy
Dissemination of vector-borne viruses, such as Zika virus (ZIKV), in tropical and sub-tropical regions has a complicated impact on the immunopathogenesis of other endemic viruses such as dengue virus (DENV), chikungunya virus (CHIKV) and human immunodeficiency virus (HIV). The consequences of the possible co-infections with these viruses have specifically shown significant impact on the treatment and vaccination strategies. ZIKV is a mosquito-borne flavivirus from African and Asian lineages that causes neurological complications in infected humans...
January 16, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29352500/characterization-of-skin-blister-fluids-from-children-with-epstein-barr-virus-associated-lymphoproliferative-disease
#3
Taizo Wada, Tomoko Toma, Hanae Miyazawa, Eiko Koizumi, Tetsujiro Shirahashi, Yusuke Matsuda, Akihiro Yachie
Epstein-Barr virus (EBV)-associated T- or natural killer (NK)-cell lymphoproliferative disease (LPD) is a heterogeneous group of disorders characterized by chronic proliferation of EBV-infected lymphocytes. Patients may present with severe skin manifestations, including hypersensitivity to mosquito bites (HMB) and hydroa vacciniforme (HV)-like eruption, which are characterized by blister formation and necrotic ulceration. Skin biopsy specimens show inflammatory reactions comprising EBV-infected lymphocytes...
January 20, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29352420/diagnosis-and-management-of-hepatitis-c-infection-in-primary-care-settings
#4
Debra Guss, Jagannath Sherigar, Paul Rosen, Smruti R Mohanty
Hepatitis C virus (HCV) infection is a significant health problem worldwide, and is the leading cause of cirrhosis, hepatocellular carcinoma, and liver transplantation in the United States. The management of HCV has changed significantly over the last 5 years, as treatments have become simpler and more efficacious. Medication efficacy is now greater than 90%, with a high barrier to resistance and few side effects. This review is a collaboration between primary care and hepatology providers to explore all aspects of HCV management: acute versus chronic HCV infection, transmission and testing, and diagnosis and treatment...
January 19, 2018: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29352410/first-detection-of-murine-herpesvirus-68-in-adult-ixodes-ricinus-ticks
#5
Marcela Kúdelová, Monika Jánošová, Petra Belvončíková
Murine herpesvirus 68 (MHV-68) is a natural pathogen that infects murid rodents, which serves as hosts for Ixodes ricinus ticks. For the first time, MHV-68 was detected in immature I. ricinus ticks feeding on Lacerta viridis lizards trapped in Slovakia, which supports the idea that ticks can acquire the virus from feeding on infected hosts. The recent discovery of MHV-68 infection and MHV-68 M3 gene transcripts in Dermacentor reticulatus ticks collected in Slovakia also supports this suggestion. Here, for the first time, we report MHV-68 infection, which was detected by nested PCR, in I...
January 19, 2018: Folia Microbiologica
https://www.readbyqxmd.com/read/29352405/virus-particle-detection-by-convolutional-neural-network-in-transmission-electron-microscopy-images
#6
Eisuke Ito, Takaaki Sato, Daisuke Sano, Etsuko Utagawa, Tsuyoshi Kato
A new computational method for the detection of virus particles in transmission electron microscopy (TEM) images is presented. Our approach is to use a convolutional neural network that transforms a TEM image to a probabilistic map that indicates where virus particles exist in the image. Our proposed approach automatically and simultaneously learns both discriminative features and classifier for virus particle detection by machine learning, in contrast to existing methods that are based on handcrafted features that yield many false positives and require several postprocessing steps...
January 19, 2018: Food and Environmental Virology
https://www.readbyqxmd.com/read/29352387/current-perspectives-on-erythema-multiforme
#7
REVIEW
Marianne Lerch, Carlo Mainetti, Benedetta Terziroli Beretta-Piccoli, Thomas Harr
Recognition and timely adequate treatment of erythema multiforme remain a major challenge. In this review, current diagnostic guidelines, potential pitfalls, and modern/novel treatment options are summarized with the aim to help clinicians with diagnostic and therapeutic decision-making. The diagnosis of erythema multiforme, that has an acute, self-limiting course, is based on its typical clinical picture of targetoid erythematous lesions with predominant acral localization as well as histological findings...
January 19, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29352371/innate-and-adaptive-t-cells-in-influenza-disease
#8
REVIEW
Simone Nüssing, Sneha Sant, Marios Koutsakos, Kanta Subbarao, Thi H O Nguyen, Katherine Kedzierska
Influenza is a major global health problem, causing infections of the respiratory tract, often leading to acute pneumonia, life-threatening complications and even deaths. Over the last seven decades, vaccination strategies have been utilized to protect people from complications of influenza, especially groups at high risk of severe disease. While current vaccination regimens elicit strain-specific antibody responses, they fail to generate cross-protection against seasonal, pandemic and avian viruses. Moreover, vaccines designed to generate influenza-specific T-cell responses are yet to be optimized...
January 20, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29352337/impact-of-hepatitis-b-carrier-status-on-the-outcomes-of-surgical-treatment-of-colorectal-liver-metastases
#9
Kin Pan Au, Kenneth Siu Ho Chok, Albert Chi Yan Chan, Wing Chiu Dai, Tan To Cheung, Chung Mau Lo
BACKGROUND: Chronic hepatitis B virus (HBV) infection is associated with a lower incidence of colorectal liver metastases. We explored the impact of HBV carrier status on outcomes of surgical treatment of colorectal liver metastases. METHODS: A retrospective analysis was conducted for consecutive patients undergoing liver resection for colorectal liver metastases from 2000 to 2016. HBV carriers were matched with controls by propensity scoring. RESULTS: 304 patients with known HBV carrier status who underwent resection of colorectal liver metastases were studied...
January 19, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29352319/activation-of-pi3k-akt-and-erk-during-early-rotavirus-infection-leads-to-v-atpase-dependent-endosomal-acidification-required-for-uncoating
#10
Mahmoud Soliman, Ja-Young Seo, Deok-Song Kim, Ji-Yun Kim, Jun-Gyu Park, Mia Madel Alfajaro, Yeong-Bin Baek, Eun-Hyo Cho, Joseph Kwon, Jong-Soon Choi, Mun-Il Kang, Sang-Ik Park, Kyoung-Oh Cho
The cellular PI3K/Akt and/or MEK/ERK signaling pathways mediate the entry process or endosomal acidification during infection of many viruses. However, their roles in the early infection events of group A rotaviruses (RVAs) have remained elusive. Here, we show that late-penetration (L-P) human DS-1 and bovine NCDV RVA strains stimulate these signaling pathways very early in the infection. Inhibition of both signaling pathways significantly reduced production of viral progeny due to blockage of virus particles in the late endosome, indicating that neither of the two signaling pathways is involved in virus trafficking...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352312/a-role-for-domain-i-of-the-hepatitis-c-virus-ns5a-protein-in-virus-assembly
#11
Chunhong Yin, Niluka Goonawardane, Hazel Stewart, Mark Harris
The NS5A protein of hepatitis C virus (HCV) plays roles in both virus genome replication and assembly. NS5A comprises three domains, of these domain I is believed to be involved exclusively in genome replication. In contrast, domains II and III are required for the production of infectious virus particles and are largely dispensable for genome replication. Domain I is highly conserved between HCV and related hepaciviruses, and is highly structured, exhibiting different dimeric conformations. To investigate the functions of domain I in more detail, we conducted a mutagenic study of 12 absolutely conserved and surface-exposed residues within the context of a JFH-1-derived sub-genomic replicon and infectious virus...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352308/high-efficiency-production-of-human-serum-albumin-in-the-posterior-silk-glands-of-transgenic-silkworms-bombyx-mori-l
#12
Qiujie Qian, Zhengying You, Lupeng Ye, Jiaqian Che, Yiran Wang, Shaohua Wang, Boxiong Zhong
Human serum albumin (HSA) is an important biological preparation with a variety of biological functions in clinical applications. In this study, the mRNA of a fusion transposase derived from the pESNT-PBase plasmid and a pBHSA plasmid containing the HSA gene under the control of a fibroin light chain (FL) promoter were co-injected into fertilized eggs. Fifty-six transgenic silkworm pedigrees expressing theexogenous recombinant HSA (rHSA) in the posterior silk glands (PSGs) with stable inheritance were successfully obtained...
2018: PloS One
https://www.readbyqxmd.com/read/29352299/bunyavirus-requirement-for-endosomal-k-reveals-new-roles-of-cellular-ion-channels-during-infection
#13
Samantha Hover, Becky Foster, Juan Fontana, Alain Kohl, Steve A N Goldstein, John N Barr, Jamel Mankouri
In order to multiply and cause disease a virus must transport its genome from outside the cell into the cytosol, most commonly achieved through the endocytic network. Endosomes transport virus particles to specific cellular destinations and viruses exploit the changing environment of maturing endocytic vesicles as triggers to mediate genome release. Previously we demonstrated that several bunyaviruses, which comprise the largest family of negative sense RNA viruses, require the activity of cellular potassium (K+) channels to cause productive infection...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352298/hexokinase-ii-may-be-dispensable-for-cd4-t-cell-responses-against-a-virus-infection
#14
Siva Karthik Varanasi, Ujjaldeep Jaggi, Nissim Hay, Barry T Rouse
Activation of CD4 T cells leads to their metabolic reprogramming which includes enhanced glycolysis, catalyzed through hexokinase enzymes. Studies in some systems indicate that the HK2 isoform is the most up regulated isoform in activated T cells and in this report the relevance of this finding is evaluated in an infectious disease model. Genetic ablation of HK2 was achieved in only T cells and the outcome was evaluated by measures of T cell function. Our results show that CD4 T cells from both HK2 depleted and WT animals displayed similar responses to in vitro stimulation and yielded similar levels of Th1, Treg or Th17 subsets when differentiated in vitro...
2018: PloS One
https://www.readbyqxmd.com/read/29352288/phospholipid-scramblase-1-interacts-with-influenza-a-virus-np-impairing-its-nuclear-import-and-thereby-suppressing-virus-replication
#15
Weiyu Luo, Jie Zhang, Libin Liang, Guangwen Wang, Qibing Li, Pengyang Zhu, Yuan Zhou, Junping Li, Yuhui Zhao, Nan Sun, Shanyu Huang, Chenchen Zhou, Yu Chang, Pengfei Cui, Pucheng Chen, Yongping Jiang, Guohua Deng, Zhigao Bu, Chengjun Li, Li Jiang, Hualan Chen
Transcription and replication of the influenza A virus (IAV) genome occur in the nucleus of infected cells and are carried out by the viral ribonucleoprotein complex (vRNP). As a major component of the vRNP complex, the viral nucleoprotein (NP) mediates the nuclear import of the vRNP complex via its nuclear localization signals (NLSs). Clearly, an effective way for the host to antagonize IAV infection would be by targeting vRNP nuclear import. Here, we identified phospholipid scramblase 1 (PLSCR1) as a binding partner of NP by using a yeast two-hybrid (Y2H) screen...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352287/ifn%C3%AE-inhibits-g-csf-induced-neutrophil-expansion-and-invasion-of-the-cns-to-prevent-viral-encephalitis
#16
Chandran Ramakrishna, Edouard M Cantin
Emergency hematopoiesis facilitates the rapid expansion of inflammatory immune cells in response to infections by pathogens, a process that must be carefully regulated to prevent potentially life threatening inflammatory responses. Here, we describe a novel regulatory role for the cytokine IFNγ that is critical for preventing fatal encephalitis after viral infection. HSV1 encephalitis (HSE) is triggered by the invasion of the brainstem by inflammatory monocytes and neutrophils. In mice lacking IFNγ (GKO), we observed unrestrained increases in G-CSF levels but not in GM-CSF or IL-17...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352251/differential-effects-of-sumo1-and-sumo3-on-pkr-activation-and-stability
#17
Ghizlane Maarifi, Faten El Asmi, Mohamed Ali Maroui, Laurent Dianoux, Mounira K Chelbi-Alix
Double-stranded RNA (dsRNA)-dependent protein kinase (PKR) is a serine/threonine kinase that exerts its own phosphorylation and the phosphorylation of the α subunit of the protein synthesis initiation factor eIF-2α. PKR was identified as a target of SUMOylation and the triple PKR-SUMO deficient mutant on Lysine residues K60-K150-K440 has reduced PKR activity. We report that SUMO1 and SUMO3 expression exert differential effects on PKR localization, activation and stability. SUMO1 or SUMO3 did not alter the repartition of PKR in the cytoplasm and the nucleus...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352245/av2-protein-of-tomato-leaf-curl-palampur-virus-promotes-systemic-necrosis-in-nicotiana-benthamiana-and-interacts-with-host-catalase2
#18
Poonam Roshan, Aditya Kulshreshtha, Surender Kumar, Rituraj Purohit, Vipin Hallan
Tomato leaf curl Palampur virus (ToLCPalV) is a whitefly-transmitted, bipartite begomovirus. Here, we demonstrated that ectopic expression of AV2 from a Potato virus X (PVX)-based vector accelerated systemic necrosis and reactive oxygen species (ROS) accumulation in Nicotiana benthamiana. Furthermore, 10 amino acids from N-terminal region of AV2 were found to be associated with the systemic necrosis symptom/phenotype. Mutational studies of ToLCPalV infectious clones lacking the AV2 revealed that AV2 is essential for the systemic movement of DNA-A, symptom severity and viral DNA accumulation...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352240/transcriptome-analysis-in-spleen-reveals-differential-regulation-of-response-to-newcastle-disease-virus-in-two-chicken-lines
#19
Jibin Zhang, Michael G Kaiser, Melissa S Deist, Rodrigo A Gallardo, David A Bunn, Terra R Kelly, Jack C M Dekkers, Huaijun Zhou, Susan J Lamont
Enhancing genetic resistance of chickens to Newcastle Disease Virus (NDV) provides a promising way to improve poultry health, and to alleviate poverty and food insecurity in developing countries. In this study, two inbred chicken lines with different responses to NDV, Fayoumi and Leghorn, were challenged with LaSota NDV strain at 21 days of age. Through transcriptome analysis, gene expression in spleen at 2 and 6 days post-inoculation was compared between NDV-infected and control groups, as well as between chicken lines...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352230/histology-immunohistochemistry-and-in-situ-hybridization-reveal-overlooked-ebola-virus-target-tissues-in-the-ebola-virus-disease-guinea-pig-model
#20
Timothy K Cooper, Louis Huzella, Joshua C Johnson, Oscar Rojas, Sri Yellayi, Mei G Sun, Sina Bavari, Amanda Bonilla, Randy Hart, Peter B Jahrling, Jens H Kuhn, Xiankun Zeng
Survivors of Ebola virus infection may become subclinically infected, but whether animal models recapitulate this complication is unclear. Using histology in combination with immunohistochemistry and in situ hybridization in a retrospective review of a guinea pig confirmation-of-virulence study, we demonstrate for the first time Ebola virus infection in hepatic oval cells, the endocardium and stroma of the atrioventricular valves and chordae tendinae, satellite cells of peripheral ganglia, neurofibroblasts and Schwann cells of peripheral nerves and ganglia, smooth muscle cells of the uterine myometrium and vaginal wall, acini of the parotid salivary glands, thyroid follicular cells, adrenal medullary cells, pancreatic islet cells, endometrial glandular and surface epithelium, and the epithelium of the vagina, penis and, prepuce...
January 19, 2018: Scientific Reports
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