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https://www.readbyqxmd.com/read/28342868/increased-interleukin-1%C3%AE-and-basic-fibroblast-growth-factor-levels-in-the-cerebrospinal-fluid-during-human-herpesvirus-6b-hhv-6b-encephalitis
#1
Masato Tamai, Nobuyuki Kobayashi, Kazuya Shimada, Naomi Oka, Mayumi Takahashi, Akiko Tanuma, Tomohiro Tanemoto, Hiroyuki Namba, Yoshihiro Saito, Yasuyuki Wada, Aikou Okamoto, Hiroyuki Ida, Kazuhiro Kondo
Human herpesvirus 6B (HHV-6B) causes exanthema subitum in infants and is known to be mildly pathogenic. However, HHV-6B infection can induce febrile seizures in a high percentage of patients, and in rare cases, result in encephalitis. We detected higher levels of interleukin (IL)-1β and basic fibroblast growth factor (bFGF) in the cerebrospinal fluid (CFS) of patients with HHV-6B encephalitis when compared to those in patients with non-HHV-6B-induced febrile seizures. In vitro, IL-1β and bFGF enhanced HHV-6B gene expression in infected U373 astrocytes during the initial and maintenance phases of infection, respectively...
March 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28342865/kshv-encoded-viral-interferon-regulatory-factor-4-virf4-interacts-with-irf7-and-inhibits-interferon-alpha-production
#2
Sung-Woo Hwang, DongIk Kim, Jae U Jung, Hye-Ra Lee
Before an infection can be completely established, the host immediately turns on the innate immune system through activating the interferon (IFN)-mediated antiviral pathway. Kaposi's sarcoma-associated herpesvirus (KSHV) utilizes a unique antagonistic mechanism of type I IFN-mediated host antiviral immunity by incorporating four viral interferon regulatory factors (vIRF1-4). Herein, we characterized novel immune evasion strategies of vIRF4 to inhibit the IRF7-mediated IFN-α production. KSHV vIRF4 specifically interacts with IRF7, resulting in inhibition of IRF7 dimerization and ultimately suppresses IRF7-mediated activation of type I IFN...
March 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28339787/molecular-characterization-of-marek-s-disease-virus-in-a-poultry-layer-farm-from-colombia
#3
Sara López-Osorio, Diego Piedrahita, Maria A Espinal-Restrepo, Gloria C Ramírez-Nieto, Venugopal Nair, Susan M Williams, Susan Baigent, César Ventura-Polite, Diego A Aranzazu-Taborda, Jenny J Chaparro-Gutiérrez
Marek's disease ( ) is a lymphoproliferative disease caused by an Alphaherpesvirus, genus Mardivirus , serotype 1 ( Gallid Herpesvirus 2 , GaHV-2) that includes all known pathogenic strains. In addition to Marek's disease virus ( ) serotype 1, the genus includes 2 distinct nonpathogenic serotypes: serotype 2 (GaHV-3) and serotype 3 ( Meleagridis Herpesvirus 1 , MeHV-1) which are used in commercially available vaccines against MD. As a result of vaccination, clinical signs are not commonly observed, and new cases are usually associated with emerging variant strains against which the vaccines are less effective...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28336944/kaposi-s-sarcoma-associated-herpesvirus-orf34-is-essential-for-late-gene-expression-and-virus-production
#4
Mayu Nishimura, Tadashi Watanabe, Syota Yagi, Takahiro Yamanaka, Masahiro Fujimuro
Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent of Kaposi's sarcoma, primary effusion lymphoma, and multicentric Castleman's disease. KSHV establishes a life-long infection in its host and alternates between a latent and lytic infection state. During lytic infection, lytic-related genes are expressed in a temporal manner and categorized as immediate early, early, and late gene transcripts. ORF34 is an early-late gene that interacts with several viral transcription-associated factors, however its physiological importance remains poorly understood...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335496/quantitative-analysis-of-the-kshv-transcriptome-following-primary-infection-of-blood-and-lymphatic-endothelial-cells
#5
A Gregory Bruce, Serge Barcy, Terri DiMaio, Emilia Gan, H Jacques Garrigues, Michael Lagunoff, Timothy M Rose
The transcriptome of the Kaposi's sarcoma-associated herpesvirus (KSHV/HHV8) after primary latent infection of human blood (BEC), lymphatic (LEC) and immortalized (TIME) endothelial cells was analyzed using RNAseq, and compared to long-term latency in BCBL-1 lymphoma cells. Naturally expressed transcripts were obtained without artificial induction, and a comprehensive annotation of the KSHV genome was determined. A set of unique coding sequence (UCDS) features and a process to resolve overlapping transcripts were developed to accurately quantitate transcript levels from specific promoters...
March 19, 2017: Pathogens
https://www.readbyqxmd.com/read/28333902/proteflazid%C3%A2-and-local-immunity-in-diseases-caused-by-human-papillomavirus-herpesvirus-and-mixed-urogenital-infections
#6
Vjacheslav Kaminsky, Viktor Chernyshov, Oleksandr Grynevych, Vasil Benyuk, Alla Kornatskaya, Miroslava Shalko, Igor Usevich, Oleg Revenko, Maxim Shepetko, Ludmila Solomakha
Reporting of clinical trials results for Proteflazid® in the drug formulation suppositories and vaginal swabs soaked in the solution of the drug to the local immunity of the female reproductive tract. AIM: The aim of study was to examine the state of local immunity in the reproductive tract of women with sexually transmitted diseases caused by human papillomavirus, herpes viruses (Type 1, 2) and mixed infection (herpes viruses + chlamydia). MATERIALS AND METHODS: The trials involved 216 women with viral sexually transmitted diseases: Cervical Dysplasia associated with papillomavirus infection (HPV) (Group 1); Herpes genitalis type 1 (HSV- 1) and type 2 (HSV-1) (Group 2); mixed infection - HSV-1, HSV-2 and chlamydia (Group 3)...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28332642/bovine-herpesvirus-1-within-herd-seroprevalence-and-antibody-levels-in-bulk-tank-milk
#7
S Martínez, E Yus, M L Sanjuán, F Camino, M C Eiras, I Arnaiz, F J Diéguez
The aim of the present study was to establish a relationship between the results obtained with the enzyme-linked immunosorbent assay (ELISA) technique for antibodies (against bovine herpesvirus 1) in serum and those in milk at the herd level. For this purpose, 275 samples of bulk-tank milk were analysed with glycoprotein E (gE) antibody ELISA and 207 more were analysed with glycoprotein B (gB) antibody ELISA (482 in total). All of these samples came from dairy herds whose seroprevalence was also evaluated. The results of this study were then used to analyse the sensitivity of the bulk-tankmilk test in detecting herds with a high risk of active infection (>60% seroprevalence) and its specificity in detecting those with few (<20%) or no seropositive animals...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28331094/herpes-simplex-virus-ge-gi-and-us9-promote-both-envelopment-and-sorting-of-virus-particles-in-the-cytoplasm-of-neurons-two-processes-that-precede-anterograde-transport-in-axons
#8
Grayson DuRaine, Todd W Wisner, Paul Howard, David C Johnson
Herpes simplex virus (HSV) anterograde transport in neuronal axons is vital, allowing spread from latently-infected ganglia to epithelial tissues where viral progeny are produced in numbers allowing spread to other hosts. HSV membrane proteins gE/gI and US9 initiate the process of anterograde axonal transport ensuring that virus particles are transported from the cytoplasm into the most proximal segments of axons. These proteins do not appear to be important once HSV is inside axons. Previously we described HSV double mutants lacking both gE and US9 that failed to transport virus particles into axons...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331082/kaposi-s-sarcoma-associated-herpesvirus-hijacks-rna-polymerase-ii-to-create-a-viral-transcriptional-factory
#9
Christopher Phillip Chen, Yuanzhi Lyu, Frank Chuang, Kazushi Nakano, Chie Izumiya, Di Jin, Mel Campbell, Yoshihiro Izumiya
Locally concentrated nuclear factors ensure efficient binding to the DNA templates, facilitating RNA polymerase II recruitment and frequent reutilization of stable pre-initiation complexes. Here we have uncovered a mechanism for effective viral transcription by focal assembly of RNA polymerase II around KSHV genomes in the host cell nucleus. Using immunofluorescent labeling of latent nuclear antigen (LANA) protein, together with fluorescence in situ RNA hybridization (RNA-FISH) of the intron region of immediate-early transcripts, we visualized active transcription of viral genomes in naturally infected cells...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28329535/kaposi-s-sarcoma-in-an-hiv-negative-patient
#10
Shields Callahan, Randie H Kim, Nooshin Brinster, Jo-Ann Latkowski
We report an HIV-negative, 55-year-old manwith recurrent Kaposi's sarcoma (KS) of the lowerextremities, who does not fit into any of thefour previously described variants of KS: classicKS, AIDS-related KS, iatrogenic KS, and AfricanendemicKS. There are reports in the literature ofchildhood-onset KS, which is thought to be dueto an inherited immune deficiency that confers ahigher susceptibility to human Herpesvirus-8 (HHV-8), which is the virus that is known to cause KS. Ourpatient may be affected with an inherited immunedeficiency that has predisposed him to KS, and thismutation also may account for his prostate andbladder cancer...
December 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329475/classic-kaposi-sarcoma-in-an-hiv-negative-han-chinese-man-a-case-report
#11
Victoria Mitre, Danielle S Applebaum, Silvia Potenziani, Sylvia Hsu
Kaposi sarcoma (KS) is a multifocal angioproliferativetumor of endothelial origin. Despite nearly identicalclinical and histopathologic presentations, KS isclassified into four distinct varieties: classic/sporadic,AIDS-associated, African/endemic, and iatrogenic. Allsubtypes are invariably linked to human herpesvirus-8(HHV-8) and show a male predilection. Classic Kaposisarcoma is exceedingly rare in the Asian populationand its incidence varies by region and ethnic grouppredominance. A study in the Xinjiang region of Chinafound that only 1% of classic KS cases occurred inpatients belonging to the Han Chinese ethnic group,which formulates 84% of the Taiwanese population...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328987/a-novel-recombinant-variant-of-latent-membrane-protein-1-from-epstein-barr-virus-in-argentina-denotes-phylogeographical-association
#12
Magdalena Gantuz, Mario Alejandro Lorenzetti, Paola Andrea Chabay, María Victoria Preciado
AIM: To study LMP1 variants distribution among children with EBV+ malignant and benign conditions as well as in healthy carriers. METHODS: Oral secretions and blood cells from 31 children with IM, and biopsies from 14 EBV+ reactive lymphoid hyperplasia and 33 EBV+ lymphomas were included. LMP1 was amplified by nested PCR and sequenced. Phylogenetic reconstructions were made under Maximun Likelihood, Bayesian and coalescent algorithms. RESULTS: Six clades were defined (China1, China2, Med-, Alaskan, B95...
2017: PloS One
https://www.readbyqxmd.com/read/28328962/the-blood-dna-virome-in-8-000-humans
#13
Ahmed Moustafa, Chao Xie, Ewen Kirkness, William Biggs, Emily Wong, Yaron Turpaz, Kenneth Bloom, Eric Delwart, Karen E Nelson, J Craig Venter, Amalio Telenti
The characterization of the blood virome is important for the safety of blood-derived transfusion products, and for the identification of emerging pathogens. We explored non-human sequence data from whole-genome sequencing of blood from 8,240 individuals, none of whom were ascertained for any infectious disease. Viral sequences were extracted from the pool of sequence reads that did not map to the human reference genome. Analyses sifted through close to 1 Petabyte of sequence data and performed 0.5 trillion similarity searches...
March 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28325183/antiherpetic-drugs-in-equine-medicine
#14
REVIEW
Lara K Maxwell
Since vaccination may not prevent disease, antiherpetic drugs have been investigated for the therapy of several equine herpesviruses. Drug efficacy has been assessed in horses with disease, but most evidence is in vitro, in other species, or empirical. Oral valacyclovir is most often administered in the therapy of equine herpesvirus type-1 (EHV-1) to protect adult horses from equine herpesvirus myeloencephalopathy, while oral acyclovir is frequently administered for EHV-5 infection in the therapy of equine multinodular pulmonary fibrosis...
April 2017: Veterinary Clinics of North America. Equine Practice
https://www.readbyqxmd.com/read/28324233/diagnosis-and-treatment-of-kaposi-sarcoma
#15
REVIEW
Johann W Schneider, Dirk P Dittmer
Kaposi sarcoma (KS) is the most common neoplasm of people living with HIV today. In Sub-Saharan Africa, KS is among the most common cancers in men, overall. Not only HIV-positive individuals present with KS; any immune compromised person infected with KS-associated herpesvirus (KSHV) or human herpesvirus 8 is at risk: the elderly, children in KSHV-endemic areas, and transplant recipients. KS diagnosis is based on detection of the viral protein latency-associated nuclear antigen (LANA) in the biopsy, but not all cases of KS are the same or will respond to the same therapy...
March 21, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28320961/structure-of-a-headful-dna-packaging-bacterial-virus-at-2-9-%C3%A3-resolution-by-electron-cryo-microscopy
#16
Haiyan Zhao, Kunpeng Li, Anna Y Lynn, Keith E Aron, Guimei Yu, Wen Jiang, Liang Tang
The enormous prevalence of tailed DNA bacteriophages on this planet is enabled by highly efficient self-assembly of hundreds of protein subunits into highly stable capsids. These capsids can stand with an internal pressure as high as ∼50 atmospheres as a result of the phage DNA-packaging process. Here we report the complete atomic model of the headful DNA-packaging bacteriophage Sf6 at 2.9 Å resolution determined by electron cryo-microscopy. The structure reveals the DNA-inflated, tensed state of a robust protein shell assembled via noncovalent interactions...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28320457/mediastinal-syndrome-from-plasmablastic-lymphoma-in-human-immunodeficiency-virus-and-human-herpes-virus-8-negative-patient-with-polycythemia-vera-a-case-report
#17
Massimo Cajozzo, Vincenzo Davide Palumbo, Salvatore Buscemi, Giuseppe Damiano, Ada Maria Florena, Daniela Cabibi, Francesco Raffaele, Antonino Alessio Anzalone, Federica Fatica, Gerlando Cocchiara, Salvatore Dioguardi, Antonio Bruno, Francesco Paolo Caronia, Attilio Ignazio Lo Monte
BACKGROUND: Plasmoblastic lymphoma is a rare and aggressive subtype of diffuse large B cell lymphoma, which occurs usually in the jaw of immunocompromised subjects. CASE PRESENTATION: We describe the occurrence of plasmoblastic lymphoma in the mediastinum and chest wall skin of an human immunodeficiency virus-negative 63-year-old Caucasian man who had had polycytemia vera 7 years before. At admission, the patient showed a superior vena cava syndrome, with persistent dyspnoea, cough, and distension of the jugular veins...
March 21, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28320319/cytomegalovirus-epstein-barr-virus-and-varicella-zoster-virus-infection-in-the-first-two-years-of-life-a-cohort-study-in-bradford-uk
#18
Lucy Pembrey, Dagmar Waiblinger, Paul Griffiths, Mauli Patel, Rafaq Azad, John Wright
BACKGROUND: Cytomegalovirus (CMV), Epstein Barr virus (EBV) and varicella-zoster virus (VZV) are common herpesviruses frequently acquired in childhood, which establish persistent, latent infection and are likely to impact the developing immune system. Little is known about the epidemiology of CMV and EBV infections in contemporary UK paediatric populations, particularly whether age at infection differs by ethnic group. METHODS: Children enrolled in the Born in Bradford Allergy and Infection Study had a blood sample taken and a questionnaire completed at 12 and 24 months of age...
March 21, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28320263/duck-virus-enteritis-duck-plague-a-comprehensive-update
#19
Kuldeep Dhama, Naveen Kumar, Mani Saminathan, Ruchi Tiwari, Kumaragurubaran Karthik, M Asok Kumar, M Palanivelu, Muhammad Zubair Shabbir, Yashpal Singh Malik, Raj Kumar Singh
Duck virus enteritis (DVE), also called duck plague, is one of the major contagious and fatal diseases of ducks, geese and swan. It is caused by duck enteritis virus (DEV)/Anatid herpesvirus-1 of the genus Mardivirus, family Herpesviridae, and subfamily Alpha-herpesvirinae. Of note, DVE has worldwide distribution, wherein migratory waterfowl plays a crucial role in its transmission within and between continents. Furthermore, horizontal and/ or vertical transmission plays a significant role in disease spread through oral-fecal discharges...
December 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28316573/a-production-calendar-based-on-water-temperature-spat-size-and-husbandry-practices-reduce-oshv-1-%C3%AE-var-impact-on-cultured-pacific-oyster-crassostrea-gigas-in-the-ebro-delta-catalonia-mediterranean-coast-of-spain
#20
Noèlia Carrasco, Ignasi Gairin, Josu Pérez, Karl B Andree, Ana Roque, Margarita Fernández-Tejedor, Chris J Rodgers, Cristobal Aguilera, M Dolors Furones
Since 2006, the production of Pacific oyster Crassostrea gigas in the Ebro Delta area has dramatically declined from around 800 metric tons (MT) per year to 138 MT in 2011. This decline in production has had a significant socio-economic impact in a region where the shellfish sector is a traditional economic activity for many families. The identified agent responsible for this reduction in C. gigas production was Ostreid Herpesvirus microvar (OsHV-1 μvar), which has been associated with C. gigas spat mortalities in France, and in many other countries...
2017: Frontiers in Physiology
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