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Viral Diagnostics

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https://www.readbyqxmd.com/read/28726603/clinical-laboratory-values-as-early-indicators-of-ebola-virus-infection-in-nonhuman-primates
#1
Ronald B Reisler, Chenggang Yu, Michael J Donofrio, Travis K Warren, Jay B Wells, Kelly S Stuthman, Nicole L Garza, Sean A Vantongeren, Ginger C Donnelly, Christopher D Kane, Mark G Kortepeter, Sina Bavari, Anthony P Cardile
The Ebola virus (EBOV) outbreak in West Africa during 2013-2016 demonstrated the need to improve Ebola virus disease (EVD) diagnostics and standards of care. This retrospective study compared laboratory values and clinical features of 3 nonhuman primate models of lethal EVD to assess associations with improved survival time. In addition, the study identified laboratory values useful as predictors of survival, surrogates for EBOV viral loads, and triggers for initiation of therapeutic interventions in these nonhuman primate models...
August 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28723775/the-neutrophil-to-lymphocyte-ratio-could-be-a-good-diagnostic-marker-and-predictor-of-relapse-in-patients-with-adult-onset-still-s-disease-a-strobe-compliant-retrospective-observational-analysis
#2
Ji-Yeoun Seo, Chang-Hee Suh, Ju-Yang Jung, Ar-Reum Kim, Ji Won Yang, Hyoun-Ah Kim
The neutrophil-to-lymphocyte ratio (NLR) is the proportion of absolute neutrophil count to lymphocytes on routine complete blood count (CBC) tests, and has been studied as a simple marker of the systemic inflammatory response. This study was performed to investigate whether the NLR could be used as a tool to diagnose and predict prognosis in cases of adult-onset Still's disease (AOSD).We retrospectively reviewed 164 patients with suspected AOSD. Among 164 patients with suspected AOSD, 37 patients received another diagnosis (such as viral infection) and were compared with the 127 patients who received a diagnosis of AOSD...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723101/virus-derived-peptides-for-clinical-applications
#3
Mingying Yang, Kegan Sunderland, Chuanbin Mao
Novel affinity agents with high specificity are needed to make progress in disease diagnosis and therapy. Over the last several years, peptides have been considered to have fundamental benefits over other affinity agents, such as antibodies, due to their fast blood clearance, low immunogenicity, rapid tissue penetration, and reproducible chemical synthesis. These features make peptides ideal affinity agents for applications in disease diagnostics and therapeutics for a wide variety of afflictions. Virus-derived peptide techniques provide a rapid, robust, and high-throughput way to identify organism-targeting peptides with high affinity and selectivity...
July 19, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28722366/-large-vessel-vasculitis-pathogenesis-diagnostic-and-medical-management
#4
Alireza Sadrkhah, Jörg D Seebach, Yannick Muller
Large vessels vasculitis includes two diseases : 1) giant cell arteritis, formerly known as Horton's arteritis and 2) Takayasu arteritis. In this article, we will describe and compare the epidemiology, pathogenesis, diagnostic criteria and medical management of both vasculitis. T helper (Th) 1 and Th17 responses, genetic links and the role of viral (varicella zoster) and bacterial infection (Mycoplasma pneumoniae or Chlamydia pneumoniae) will be discussed. Classification criteria, inflammation biomarkers and progress in imaging tools will also be described...
April 5, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28720294/papillomaviruses-in-dogs-and-cats
#5
REVIEW
John S Munday, Neroli A Thomson, Jennifer A Luff
Papillomaviruses (PVs) cause disease in both dogs and cats. In dogs, PVs are thought to cause oral papillomatosis, cutaneous papillomas and canine viral pigmented plaques, whereas PVs have been rarely associated with the development of oral and cutaneous squamous cell carcinomas in this species. In cats, PVs are currently thought to cause oral papillomas, feline viral plaques, Bowenoid in situ carcinomas and feline sarcoids. Furthermore, there is increasing evidence that PVs may also be a cause of cutaneous squamous cell carcinomas and basal cell carcinomas in cats...
July 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28715460/early-infant-diagnosis-of-hiv-1-infection-in-luanda-angola-using-a-new-dna-pcr-assay-and-dried-blood-spots
#6
Francisco Martin, Claudia Palladino, Rita Mateus, Anna Bolzan, Perpétua Gomes, José Brito, Ana Patrícia Carvalho, Yolanda Cardoso, Cristovão Domingos, Vanda Sofia Lôa Clemente, Nuno Taveira
BACKGROUND: Early diagnosis and treatment reduces HIV-1-related mortality, morbidity and size of viral reservoirs in infants infected perinatally. Commercial molecular tests enable the early diagnosis of infection in infants but the high cost and low sensitivity with dried blood spots (DBS) limit their use in sub-Saharan Africa. OBJECTIVES: To develop and validate a sensitive and cheap qualitative proviral DNA PCR-based assay for early infant diagnosis (EID) in HIV-1-exposed infants using DBS samples...
2017: PloS One
https://www.readbyqxmd.com/read/28715422/unraveling-the-genetic-diversity-and-phylogeny-of-leishmania-rna-virus-1-strains-of-infected-leishmania-isolates-circulating-in-french-guiana
#7
Sourakhata Tirera, Marine Ginouves, Damien Donato, Ignacio S Caballero, Christiane Bouchier, Anne Lavergne, Eliane Bourreau, Emilie Mosnier, Vincent Vantilcke, Pierre Couppié, Ghislaine Prevot, Vincent Lacoste
INTRODUCTION: Leishmania RNA virus type 1 (LRV1) is an endosymbiont of some Leishmania (Vianna) species in South America. Presence of LRV1 in parasites exacerbates disease severity in animal models and humans, related to a disproportioned innate immune response, and is correlated with drug treatment failures in humans. Although the virus was identified decades ago, its genomic diversity has been overlooked until now. METHODOLOGY/PRINCIPLES FINDINGS: We subjected LRV1 strains from 19 L...
July 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28713579/ring-trial-2016-for-bluetongue-virus-detection-by-real-time-rt-pcr-in-france
#8
Corinne Sailleau, Cyril Viarouge, Emmanuel Breard, Damien Vitour, Stephan Zientara
Since the unexpected emergence of BTV-8 in Northern Europe and the incursion of BTV-8 and 1 in France in 2006-2007, molecular diagnosis has considerably evolved. Several real-time RT-PCR (rtRT-PCR) methods have been developed and published, and are currently being used in many countries across Europe for BTV detection and typing. In France, the national reference laboratory (NRL) for orbiviruses develops and validates 'ready-to-use' kits with private companies for viral RNA detection. The regional laboratories network that was set up to deal with a heavy demand for analyses has used these available kits...
May 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/28711083/bedside-diagnostics-in-dermatology-parasitic-and-noninfectious-diseases
#9
REVIEW
Robert G Micheletti, Arturo R Dominguez, Karolyn A Wanat
In addition to aiding the diagnosis of viral, bacterial, and fungal diseases, mineral oil preparation, Tzanck smear, and other techniques can be used to diagnose parasitic infections, neonatal pustular dermatoses, blistering diseases, Stevens-Johnson syndrome, and a plethora of other benign and malignant conditions, including granulomatous diseases and tumors. In many cases, these techniques are specific, reliable, and easy to perform and interpret. In others, a certain amount of training and expertise are required...
August 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28711082/bedside-diagnostics-in-dermatology-viral-bacterial-and-fungal-infections
#10
REVIEW
Karolyn A Wanat, Arturo R Dominguez, Zachary Carter, Pedro Legua, Beatriz Bustamante, Robert G Micheletti
Viral, bacterial, and fungal infections are frequently encountered in clinical practice, resulting in numerous cutaneous manifestations. Although diagnosis of these infections has changed over time because of technological advancements, such as polymerase chain reaction, bedside diagnostic techniques still play an important role in diagnosis and management, enabling rapid and low-cost diagnosis and implementation of appropriate therapies. This 2-part article will review both common and infrequent uses of bedside diagnostic techniques that dermatologists can incorporate into daily practice...
August 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28709134/bcr-abl1-like-acute-lymphoblastic-leukaemia-from-bench-to-bedside
#11
REVIEW
Judith M Boer, Monique L den Boer
Acute lymphoblastic leukaemia (ALL) occurs in approximately 1:1500 children and is less frequently found in adults. The most common immunophenotype of ALL is the B cell lineage and within B cell precursor ALL, specific genetic aberrations define subtypes with distinct biological and clinical characteristics. With more advanced genetic analysis methods such as whole genome and transcriptome sequencing, novel genetic subtypes have recently been discovered. One novel class of genetic aberrations comprises tyrosine kinase-activating lesions, including translocations and rearrangements of tyrosine kinase and cytokine receptor genes...
July 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28702612/rapid-label-free-cd4-testing-using-a-smartphone-compatible-device
#12
Manoj Kumar Kanakasabapathy, Hardik J Pandya, Mohamed Shehata Draz, Manjyot Kaur Chug, Magesh Sadasivam, Shreya Kumar, Behzad Etemad, Vinish Yogesh, Mohammadali Safavieh, Waseem Asghar, Jonathan Z Li, Athe M Tsibris, Daniel R Kuritzkes, Hadi Shafiee
The most recent guidelines have called for a significant shift towards viral load testing for HIV/AIDS management in developing countries; however point-of-care (POC) CD4 testing still remains an important component of disease staging in multiple developing countries. Advancements in micro/nanotechnologies and consumer electronics have paved the way for mobile healthcare technologies and the development of POC smartphone-based diagnostic assays for disease detection and treatment monitoring. Here, we report a simple, rapid (30 minutes) smartphone-based microfluidic chip for automated CD4 testing using a small volume (30 μL) of whole blood...
July 12, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28702195/molecular-indices-of-viral-disease-development-in-wild-migrating-salmon-%C3%A2
#13
Kristina M Miller, Oliver P Günther, Shaorong Li, Karia H Kaukinen, Tobi J Ming
Infectious diseases can impact the physiological performance of individuals, including their mobility, visual acuity, behavior and tolerance and ability to effectively respond to additional stressors. These physiological effects can influence competitiveness, social hierarchy, habitat usage, migratory behavior and risk to predation, and in some circumstances, viability of populations. While there are multiple means of detecting infectious agents (microscopy, culture, molecular assays), the detection of infectious diseases in wild populations in circumstances where mortality is not observable can be difficult...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28702151/human-enteroviruses-in-cerebrospinal-fluid-of-children-with-suspected-aseptic-meningitis-a-study-in-northern-iran
#14
Farzin Sadeghi, Masoumeh Talebi-Nesami, Rahim Barari-Savadkouhi, Ali Bijani, Elahe Ferdosi-Shahandashti, Yousef Yahyapour
BACKGROUND: Enterovirus (EV) infections are one of the most common causes of aseptic meningitis in pediatrics. To diagnose EV meningitis, virus isolation in cell cultures is often time consuming and lacks sensitivity to be of clinical relevance. This makes the virus culture results difficult to interpret. The rapid detection of EVs in cerebrospinal fluid (CSF) by molecular diagnostic techniques may improve the management of patients with aseptic meningitis. The purpose of the present study was to develop a more convenient and sensitive alternative technique to viral culture...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28697809/comparison-of-hcv-viral-load-and-its-genotype-distributions-in-hcv-mono-and-hiv-hcv-co-infected-illicit-drug-users
#15
Marzieh Jamalidoust, Mandana Namayandeh, Mohsen Moghadami, Mazyar Ziyaeyan
BACKGROUND: Because of shared modes of transmission, patients with hepatitis C virus (HCV) infection are often co-infected with other types of hepatitis viruses and/or HIV. We studied HCV viral load and its genotype patterns among HCV mono- and HCV/HIV co-infected Illicit Drug Users in Fars province-Iran. METHODS: Totally, 580 HCV seropositive IDUs referred to Prof. Alborzi Clinical Microbiology Research Center, Shiraz, Iran, without receiving any anti-HCV treatment, were enrolled...
July 11, 2017: Virology Journal
https://www.readbyqxmd.com/read/28697267/back-to-the-basics-community-acquired-pneumonia-in-children
#16
Kathleen Boyd
Community-acquired pneumonia (CAP) is a common childhood infection and often a reason for inpatient admission, especially when a child is hypoxic or in respiratory distress. Despite advances in technology and diagnostics, it remains difficult to accurately differentiate bacterial CAP from a viral process. Most of the laboratory tests routinely done in inpatient medicine, such as complete blood counts and acute phase reactants, do little to differentiate a viral pneumonia from a bacterial pneumonia. Clinicians must rely heavily on the clinical presentation and decide whether to treat empirically with antibiotics...
July 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28697163/utility-of-lumbar-puncture-in-children-presenting-with-status-epilepticus
#17
Kenneth A Michelson, Todd W Lyons, Kara B Johnson, Lise E Nigrovic, Marvin B Harper, Amir A Kimia
OBJECTIVES: Because meningitis may trigger seizures, we sought to determine its frequency in children with first-time status epilepticus (SE). METHODS: We performed a retrospective cross-sectional study of children aged 1 month to 21 years who presented to a single pediatric emergency department between 1995 and 2012 with SE and who had a lumbar puncture (LP) performed as part of the diagnostic evaluation. We defined bacterial meningitis as a cerebrospinal fluid (CSF) culture positive for a bacterial pathogen or CSF pleocytosis (CSF white blood cells ≥10 cells/mm) with a blood culture positive for a bacterial pathogen...
July 11, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28694835/myoepithelioma-of-soft-tissue-in-the-gluteal-region-diagnostic-pitfall-in-cytology
#18
Viral M Bhanvadia, Neeru M Agarwal, Alpesh D Chavda, Bharat V Bhetariya
No abstract text is available yet for this article.
2017: CytoJournal
https://www.readbyqxmd.com/read/28694740/review-of-hepatocellular-carcinoma-epidemiology-etiology-and-carcinogenesis
#19
REVIEW
Yezaz Ahmed Ghouri, Idrees Mian, Julie H Rowe
Since the 1970s, the epidemic of hepatocellular carcinoma (HCC) has spread beyond the Eastern Asian predominance and has been increasing in Northern hemisphere, especially in the United States (US) and Western Europe. It occurs more commonly in males in the fourth and fifth decades of life. Among all cancers, HCC is one of the fastest growing causes of death in the US and poses a significant economic burden on healthcare. Chronic liver disease due to hepatitis B virus or hepatitis C virus and alcohol accounts for the majority of HCC cases...
2017: Journal of Carcinogenesis
https://www.readbyqxmd.com/read/28694527/revealing-enterovirus-infection-in-chronic-human-disorders-an-integrated-diagnostic-approach
#20
Angelo Genoni, Filippo Canducci, Agostino Rossi, Francesco Broccolo, Konstantin Chumakov, Giorgio Bono, Jorge Salerno-Uriarte, Alessandro Salvatoni, Alberto Pugliese, Antonio Toniolo
Enteroviruses (EVs) causing persisting infection are characterized by minimal replication and genetic changes. Typing of these agents may complement disease assessment and shed light on pathogenesis. Here we report an integrated approach for EV detection in human samples that is based on pre-enrichment of virus in cell culture before search for the viral genome and viral antigens. Cases of post-polio syndrome, type 1 diabetes, and chronic cardiomyopathy were investigated. As tissue-based approaches require invasive procedures, information was mainly gleaned from virus in blood...
July 10, 2017: Scientific Reports
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