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https://www.readbyqxmd.com/read/28820067/a-comprehensive-review-on-ebola-ebov-virus-future-prospects
#1
Dr Abdru Rauf, Muhammad, Abdur Rauf, Ahsan Khan, Muhammad Rizwan, Seema Patel, Haroon Khan, Adel Mahasneh, Mohammad S Mubarak
Ebola virus (EBOV) was discovered for the first time in 1976. It belongs to the family Filoviridae, which causes hemorrhagic fever that could lead to death in a few days. West Africa faced a major outbreak where symptoms appeared in the form of chills, myalgia, fever, diarrhea, and vomiting, and the disease finally reached a severe state as a result of hemorrhagic complications and failure of multiple organs. EBOV spreads by contact with body fluids of an infected person such as blood, saliva, urine, and seminal fluid, and also spreads by a contact with contaminated surfaces...
August 16, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28814340/detection-and-genetic-characterization-of-canine-astroviruses-in-pet-dogs-in-guangxi-china
#2
Huabo Zhou, Lin Liu, Ruikai Li, Yifeng Qin, Qingli Fang, Vinod Rmt Balasubramaniam, Guojun Wang, Zuzhang Wei, Kang Ouyang, Weijian Huang, Ying Chen
BACKGROUND: Astroviruses (AstVs) have been reported to infect and cause gastroenteritis in most animal species. Human AstVs were regarded the causative agent of viral diarrhea in children. In dogs, little is known about the epidemiology and clinical significance of AstV infection. FINDINGS: In this study, we collected and tested 253 rectal swabs from pet dogs; of which 64 samples (25.3%) tested positive for AstVs with diarrhea and 15 more samples (5.9%) also was identified as AstVs, however without any clinical signs...
August 17, 2017: Virology Journal
https://www.readbyqxmd.com/read/28810894/chikungunya-an-emerging-viral-infection-with-varied-clinical-presentations-in-bangladesh-reports-of-seven-cases
#3
Muhammad Abdur Rahim, Khwaja Nazim Uddin
BACKGROUND: Chikungunya is an emerging and rapidly spreading viral infection in many parts of the world including Bangladesh. It shares many epidemiological and clinical characteristics with dengue. So, a sound knowledge is required for its detection and differentiation from dengue, specially in endemic regions. CASE PRESENTATION: We present seven confirmed cases of chikungunya having different clinical presentations occurring among middle aged males and females from different socio-economic background in Dhaka city, the capital of Bangladesh...
August 15, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28806976/quantitative-detection-of-human-malawi-polyomavirus-in-nasopharyngeal-aspirates-sera-and-feces-in-beijing-china-using-real-time-taqman-based-pcr
#4
Fen-Lian Ma, Dan-di Li, Tian-Li Wei, Jin-Song Li, Li-Shu Zheng
BACKGROUND: Human Malawi polyomavirus (MWPyV) was discovered in 2012, but its prevalence and clinical characteristics are largely unknown. METHODS: We used real-time TaqMan-based PCR to detect MWPyV in the feces (n = 174) of children with diarrhea, nasopharyngeal aspirates (n = 887) from children with respiratory infections, and sera (n = 200) from healthy adults, and analyzed its clinical characteristics statistically. All the MWPyV-positive specimens were also screened for other common respiratory viruses...
August 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28803536/bovine-viral-diarrhea-virus-1b-fetal-infection-with-extensive-hemorrhage
#5
Robert W Fulton, Anthony W Confer, Nicholas J Sorensen, Julia F Ridpath, Lurinda J Burge
Bovine viral diarrhea virus (BVDV) 1b was isolated from tissues of a term bovine fetus with petechial hemorrhages noted throughout the body and placenta at autopsy. Fresh lung, kidney, thymus, and liver tissues were examined by direct fluorescent antibody testing and were positive for BVDV antigen and negative for bovine herpesvirus 1 antigen. An organ pool of fresh tissues was positive for noncytopathic (NCP) BVDV-1 by virus isolation. BVDV-1b was identified by sequencing of the 5'-UTR region of the genome...
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28803517/evaluation-of-16-commercial-antibody-elisas-for-the-detection-of-bovine-viral-diarrhea-virus-specific-antibodies-in-serum-and-milk-using-well-characterized-sample-panels
#6
Jean-Baptiste Hanon, Miet De Baere, Camille De la Ferté, Sophie Roelandt, Yves Van der Stede, Brigitte Cay
We performed a thorough fit-for-purpose evaluation of commercial ELISAs for the detection of bovine viral diarrhea virus (BVDV)-specific antibodies in serum and in milk by testing 2 panels of well-characterized serum and milk samples. Sixteen ELISAs from 9 different manufacturers, available on the Belgian market at the time of our study, were assessed for their diagnostic and analytical sensitivity (DSe and ASe, respectively), diagnostic specificity (DSp), and repeatability relative to the virus neutralization (VN) test considered to be the gold standard assay...
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28798420/hiv-1-tat-induced-diarrhea-evokes-an-enteric-glia-dependent-neuroinflammatory-response-in-the-central-nervous-system
#7
Giuseppe Esposito, Elena Capoccia, Stefano Gigli, Marcella Pesce, Eugenia Bruzzese, Alessandra D'Alessandro, Carla Cirillo, Alessandro di Cerbo, Rosario Cuomo, Luisa Seguella, Luca Steardo, Giovanni Sarnelli
Despite the effectiveness of combined anti-retroviral therapy, human immunodeficiency virus (HIV) infected-patients frequently report diarrhea and neuropsychological deficits. It is claimed that the viral HIV-1 Trans activating factor (HIV-1 Tat) protein is responsible for both diarrhea and neurotoxic effects, but the underlying mechanisms are not known. We hypothesize that colonic application of HIV-1 Tat activates glial cells of the enteric nervous system (EGCs), leading to a neuroinflammatory response able to propagate to the central nervous system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28795249/characterization-of-thymus-associated-lymphoid-depletion-in-bovine-calves-acutely-or-persistently-infected-with-bovine-viral-diarrhea-virus-1-bovine-viral-diarrhea-virus-2-or-hobi-like-pestivirus
#8
Shollie M Falkenberg, Fernando V Bauermann, Julia F Ridpath
Naïve pregnant cattle exposed to pestiviruses between 40-125 days of gestation can give birth to persistently infected (PI) calves. Clinical presentation and survivability, in PI cattle, is highly variable even with the same pestivirus strain whereas the clinical presentation in acute infections is more uniform with severity of symptoms being primarily a function of virulence of the infecting virus. The aim of this study was to compare thymic depletion, as measured by comparing the area of the thymic cortex to the medulla (corticomedullary ratio), in acute and persistent infections of the same pestivirus isolate...
August 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28794420/interrelationship-of-rotavirus-infection-and-creatine-kinase-mb-isoenzyme-levels-in-children-hospitalized-with-acute-gastroenteritis-in-guangzhou-china-2012-2015
#9
Jianbin Zheng, Haiqing Zheng, Ramit Kumar Gupta, Huixian Li, Hui Shi, Liyan Pan, Sitang Gong, Huiying Liang
Elevated levels of Creatine Kinase-MB (CK-MB) Isoenzyme are a common phenomenon among rotavirus (RV) diarrhea. However, few studies have addressed this issue using large sample size. In current study, 1,118 children (age <5 years) hospitalized with diarrhea in Guangzhou Women and Children's Medical Center from 2012 to 2015 were finally included. Changing pattern of CK-MB and its relationship with RV-infection were analyzed and characterized. Multivariate linear regression models showed that RV-positive cases had a 28% rise in CK-MB compared to RV-negative cases (OR = 1...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794037/reverse-genetics-system-demonstrates-that-rotavirus-non-structural-protein-nsp6-is-not-essential-for-viral-replication-in-cell-culture
#10
Satoshi Komoto, Yuta Kanai, Saori Fukuda, Masanori Kugita, Takahiro Kawagishi, Naoto Ito, Makoto Sugiyama, Yoshiharu Matsuura, Takeshi Kobayashi, Koki Taniguchi
The use of overlapping open reading frames (ORFs) to synthesize more than one unique protein from a single mRNA has been described for several viruses. Segment 11 of the rotavirus genome encodes two non-structural proteins, NSP5 and NSP6. The NSP6 ORF is present in the vast majority of rotavirus strains, and therefore the NSP6 protein would be expected to have a function in viral replication. However, there is no direct evidence of its function or requirement in the viral replication cycle yet. Here, taking advantage of a recently established plasmid only-based reverse genetics system that allows rescue of recombinant rotaviruses entirely from cloned cDNAs, we generated NSP6-deficient viruses to directly address its significance in the viral replication cycle...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28790999/immunization-with-recombinant-tcdb-encapsulated-nanocomplex-induces-protection-against-clostridium-difficile-challenge-in-a-mouse-model
#11
Yi-Wen Liu, Yu-Hung Chen, Jenn-Wei Chen, Pei-Jane Tsai, I-Hsiu Huang
Clostridium difficile is considered to be one of the major cause of infectious diarrhea in healthcare systems worldwide. Symptoms of C. difficile infection are caused largely by the production of two cytotoxins: toxin A (TcdA) and toxin B (TcdB). Vaccine development is considered desirable as it would decrease the mounting medical costs and mortality associated with C. difficile infections. Biodegradable nanoparticles composed of poly-γ-glutamic acid (γ-PGA) and chitosan have proven to be a safe and effective antigen delivery system for many viral vaccines...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28783456/effect-of-booster-vaccination-with-inactivated-porcine-epidemic-diarrhea-virus-on-neutralizing-antibody-response-in-mammary-secretions
#12
Thomas Gillespie, Qinye Song, Megan Inskeep, Suzanne Stone, Michael P Murtaugh
Porcine epidemic diarrhea virus (PEDV) causes acute diarrhea, dehydration in pigs, and high mortality rates in piglets <3 weeks of age. Maternal immunity protects piglets, but information on vaccination before or after natural infection in endemically exposed sow herds is limited. Currently, the recovery goal in sow units infected with PEDV is to become fully naive again or use natural virus infection to develop immune gilts through a feedback program before introduction into the sow herd. Since neutralizing antibodies in the gut are critical for protection against enteric viral infections such as PEDV, we evaluated the effect of a conditionally licensed, adjuvanted inactivated PEDV vaccine on neutralizing antibody levels in milk and colostrum in both naive and previously naturally exposed sow herds...
August 7, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28772169/astrovirus-infection-in-hospitalized-children-molecular-clinical-and-epidemiological-features
#13
Jones Anderson Monteiro Siqueira, Darleise de Souza Oliveira, Thaís Cristina Nascimento de Carvalho, Thayara Morais Portal, Maria Cleonice Aguiar Justino, Luciana Damascena da Silva, Hugo Reis Resque, Yvone Benchimol Gabbay
BACKGROUND: Astrovirus (HAstV) is a common viral pathogen that causes gastroenteritis worldwide. It is classified into eight classical human types (HAstV-1/8) and seven other less prevalent types, described as HAstV VA1, VA2, VA3, VA4, MLB-1, MLB-2 and MLB-3. During outbreaks, the elderly and children are the most affected, and the spread of the virus is associated with person-to-person contact, food ingestion and contaminated water. OBJECTIVES: The aim of the present study was to investigate the prevalence of infection and genetic diversity of HAstV strains...
July 25, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28763405/suspected-pediatric-influenza-risk-stratification-algorithm-a-clinical-decision-tool
#14
Patrick D Evers, Michelle Starr, Michael J McNeil, Laura OʼNeill, Andrea Posa, Timothy Savage, Russell Migita
BACKGROUND AND OBJECTIVES: Influenza causes significant annual burden among children. Current guidelines recommend empiric treatment for a broadly defined group of children at high risk for influenza complications, resulting in overtreatment or costly viral testing. This study creates an algorithm for clinicians to risk stratify children with influenza-like illness (ILI) according to likelihood of influenza infection. METHODS: A retrospective analysis was performed on 818 children seen in the emergency department from November 2012 to April 2013 for ILI...
August 1, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28757031/genetic-characteristics-pathogenicity-and-immunogenicity-associated-with-cell-adaptation-of-a-virulent-genotype-2b-porcine-epidemic-diarrhea-virus
#15
Sunhee Lee, Kyu-Yeol Son, Yun-Hee Noh, Seung-Chul Lee, Hwan-Won Choi, In-Joong Yoon, Changhee Lee
Porcine epidemic diarrhea virus (PEDV) has emerged or re-emerged worldwide, posing a significant financial threat to major pig-producing countries. In the present study, a virulent Korean pandemic PEDV strain, KNU-141112, was serially propagated in Vero cells for up to 100 passages. Through cell culture adaptation, we obtained four distinct deletion (DEL) mutants by plaque purification followed by nucleotide sequencing of the spike (S)/ORF3 gene-coding region, which were designated KNU-141112-S DEL2, -S DEL5, -S DEL2/ORF3, and -S DEL5/ORF3...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28748879/early-clinical-manifestations-and-laboratory-findings-before-and-after-treatment-of-cytomegalovirus-infection-in-kidney-transplant-patients
#16
Wasim Ahmed Siddiqui, Issa Al Salmi, Amitabh Jha, Abbas Pakkyara, Mohammad Yasir, Faissal A M Shaheen
Cytomegalovirus (CMV) is one of the most frequently encountered opportunistic viral pathogens in kidney transplant recipients. In this study, we retrospectively reviewed all living related and unrelated kidney transplant recipients on regular follow-up from January 2006 to June 2015, who were suspected to have CMV clinically and confirmed by DNA polymerase chain reaction (PCR). CMV PCR was detected in 102 kidney transplant recipients. The median time of detection after kidney transplant was 21 months, ranging from 15 days to 84 months...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28744106/evaluating-patient-preference-and-satisfaction-for-human-immunodeficiency-virus-therapy-in-france
#17
Sylvie Brégigeon-Ronot, Antoine Cheret, André Cabié, Thierry Prazuck, Alain Volny-Anne, Shehzad Ali, Catherine Bottomley, Laurent Finkielsztejn, Caroline Philippe, Jean-Jacques Parienti
OBJECTIVES: The objectives were 1) to elicit relative preferences for attributes of antiretroviral therapies (ART) in people living with HIV (PLWH) and 2) to explore satisfaction and adherence with current ART. PATIENTS AND METHODS: We conducted a multicenter cross-sectional study, consecutively enrolling PLWH receiving an ART. The quantitative part estimated the strength of preference for different attributes using an online discrete choice experiment (DCE). DCE data were analyzed using a mixed logit regression model...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28736804/study-of-the-association-between-histo-blood-group-antigens-and-norovirus-infection-in-chinese-children
#18
Zhu-Lun Zhuang, Yu Jin, Kun-Long Yan, Wei-Xia Cheng
Human caliciviruses (HuCVs) have been recognized as a major cause of sporadic viral diarrhea in children, among which norovirus genotype GII.4 is the most prevalent genotype. Stool and saliva samples were collected from 295 children with acute diarrhea and 150 asymptomatic children at a hospital in China. The HuCV detection rate was 10.85% (32/295) among the children with acute diarrhea, and all of these 32 children were either HBGA secretors (12/32) or partial secretors (20/32). HuCV was detected in two (1...
July 24, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28735964/bovine-a20-gene-overexpression-during-bovine-viral-diarrhea-virus-1-infection-blocks-nf-%C3%AE%C2%BAb-pathway-in-mdbk-cells
#19
Melina Villalba, Nivia Canales, Nicolas Maldonado, Carola Otth, Fernanda Fredericksen, Pablo Garcés, Cristopher Stepke, Valentina Arriagada, Víctor H Olavarría
Viruses have developed cellular strategies to ensure progeny survival. One of the most interesting is immune camouflage, where the virus triggers a controlled-intensity immune response that prevents total destruction of the infected cell, thus "winning time" for the virus. This study explored the regulatory contexts of the bovine A20 gene during bovine viral diarrhea virus (BVDV)-1 infection, using IL-8 as an immune-response sentinel molecule. Assessments were conducted through RT-qPCR, Western blotting, gene silencing/overexpression, luciferase assays, and the use of pharmacological inhibitors, among other approaches...
July 21, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28733861/an-infant-with-acute-gastroenteritis-caused-by-a-secondary-infection-with-a-rotarix-derived-strain
#20
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
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