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Zika infections and complications

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https://www.readbyqxmd.com/read/29145400/zika-virus-an-updated-review-of-competent-or-naturally-infected-mosquitoes
#1
REVIEW
Yanouk Epelboin, Stanislas Talaga, Loïc Epelboin, Isabelle Dusfour
Zika virus (ZIKV) is an arthropod-borne virus (arbovirus) that recently caused outbreaks in the Americas. Over the past 60 years, this virus has been observed circulating among African, Asian, and Pacific Island populations, but little attention has been paid by the scientific community until the discovery that large-scale urban ZIKV outbreaks were associated with neurological complications such as microcephaly and several other neurological malformations in fetuses and newborns. This paper is a systematic review intended to list all mosquito species studied for ZIKV infection or for their vector competence...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29113627/the-proportion-of-asymptomatic-infections-and-spectrum-of-disease-among-pregnant-women-infected-by-zika-virus-systematic-monitoring-in-french-guiana-2016
#2
Claude Flamand, Camille Fritzell, Séverine Matheus, Maryvonne Dueymes, Gabriel Carles, Anne Favre, Antoine Enfissi, Antoine Adde, Magalie Demar, Mirdad Kazanji, Simon Cauchemez, Dominique Rousset
Zika virus (ZIKV) infection has been associated with complications during pregnancy. Although the presence of symptoms might be a risk factor for complication, the proportion of ZIKV-infected pregnant women with symptoms remains unknown. Following the emergence of ZIKV in French Guiana, all pregnancies in the territory were monitored by RT-PCR and/or detection of ZIKV antibodies. Follow-up data collected during pregnancy monitoring interviews were analysed from 1 February to 1 June 2016. We enrolled 3,050 pregnant women aged 14-48 years and 573 (19%) had laboratory-confirmed ZIKV infection...
November 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29108750/new-spectrum-of-the-neurologic-consequences-of-zika
#3
EDITORIAL
Marco T Medina, Marco Medina-Montoya
Zika virus infection represents a new neuropathological agent with association to a wide spectrum of neurological complications: a) Congenital Zika Syndrome by affecting the neural stem cells of the human fetal brain; b) Guillain-Barré Syndrome by an autoimmune response against peripheral myelin and/or axonal components or probable direct inflammatory reaction; c) Encephalitis/meningoencephalitis and myelitis by a direct viral inflammatory process on the central nervous system; d) Sensory neuropathy by infecting directly the peripheral neurons and causing substantial cell death and pathogenic transcriptional dysregulation; e) Acute Disseminated Encephalomyelitis and optic neuropathy; f) Seizures and Epilepsy and g) childhood arterial ischemic stroke by probable inflammatory reaction and endothelial injury...
November 1, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29093104/ability-to-serologically-confirm-recent-zika-virus-infection-in-areas-with-varying-past-incidence-of-dengue-virus-infection-united-states-and-territories-2016
#4
Nicole P Lindsey, J Erin Staples, Krista Powell, Ingrid B Rabe, Marc Fischer, Ann M Powers, Olga I Kosoy, Eric C Mossel, Jorge L Munoz-Jordan, Manuela Beltran, W Thane Hancock, Karrie-Ann E Toews, Esther M Ellis, Brett R Ellis, Amanda J Panella, Alison J Basile, Amanda E Calvert, Janeen Laven, Christin H Goodman, Carolyn V Gould, Stacey W Martin, Jennifer D Thomas, Julie Villanueva, Mary L Mataia, Rebecca Sciulli, Remedios Gose, A Christian Whelen, Susan L Hills
Background. Cross-reactivity within flavivirus antibody assays, produced by shared epitopes in the envelope proteins, can complicate serological diagnosis of Zika virus (ZIKAV) infection. We assessed the utility of the plaque reduction neutralization test (PRNT) to confirm recent ZIKAV infections and rule out misleading positive IgM results in areas with varying past dengue virus (DENV) infection incidence. Methods. We reviewed PRNT results of sera collected for diagnosis of ZIKAV infection from January 1 through August 31, 2016 with positive ZIKAV IgM results and ZIKAV and DENV PRNT performed...
November 1, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29050846/zika-virus-what-where-from-and-where-to
#5
REVIEW
Kerri Basile, Jen Kok, Dominic E Dwyer
The significance of Zika virus as a clinically significant flavivirus has previously been under-recognised, until extensive outbreaks in Yap in 2007, French Polynesia in 2013 and the Americas since 2015. Although Zika virus infection is commonly asymptomatic or mild, emerging evidence suggests a strong link to microcephaly in babies and Guillain-Barré syndrome in adults. This article reviews the epidemiology, geographic distribution, basic virology, transmission, clinical presentation, potential complications, laboratory diagnosis, treatment and prevention of Zika virus infection...
October 16, 2017: Pathology
https://www.readbyqxmd.com/read/29048558/modeling-neuro-immune-interactions-during-zika-virus-infection
#6
Pinar Mesci, Angela Macia, Christopher N LaRock, Leon Tejwani, Isabella R Fernandes, Nicole A Suarez, Paolo M de A Zanotto, Patricia C B Beltrão-Braga, Victor Nizet, Alysson R Muotri
Although Zika virus (ZIKV) infection is often asymptomatic, in some cases it can lead to birth defects in newborns or serious neurologic complications in adults. However, little is known about the interplay between immune and neural cells that could contribute to the ZIKV pathology. To understand the mechanisms at play during infection and the antiviral immune response, we focused on neural precursor cells (NPC)-microglia interactions. Our data indicate that human microglia infected with the current circulating Brazilian ZIKV induces a similar pro-inflammatory response found in ZIKV-infected human tissues...
October 17, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29027743/generalized-pustular-psoriasis-triggered-by-zika-virus-infection
#7
A E Paniz Mondolfi, M Hernandez Perez, G Blohm, M Marquez, A Mogollon Mendoza, C E Hernandez-Pereira, M A Escalona, A Lodeiro Colatosti, J Rothe DeArocha, A J Rodriguez Morales
Zika virus is an emerging arbovirus, which is expanding in epidemic proportions through tropical and subtropical areas of the world. Although Zika is linked to a number of congenital and neurological complications, there is scarce knowledge on the impact of ZIKV infection in human skin. We report the case of a 68-year old woman who presented with generalized pustular psoriasis after a preceding and otherwise uneventful episode of ZIKV infection. Based on recent experimental data on the biology of ZIKV infection in the cutaneous environment, we speculate that ZIKV may have directly triggered the development of generalized pustular psoriasis by stimulation of keratinocyte-derived mediators of inflammation and a polyfunctional T-cell driven immune reaction in the cutaneous milieu...
October 13, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29022864/reverse-genetic-system-genetically-stable-reporter-viruses-and-packaged-subgenomic-replicon-based-on-a-brazilian-zika-virus-isolate
#8
Margit Mutso, Sirle Saul, Kai Rausalu, Olga Susova, Eva Žusinaite, Suresh Mahalingam, Andres Merits
Zika virus (ZIKV, genus Flavivirus) has emerged as a major mosquito-transmitted human pathogen, with recent outbreaks associated with an increased incidence of neurological complications, particularly microcephaly and the Guillain-Barré syndrome. Because the virus has only very recently emerged as an important pathogen, research is being hampered by a lack of reliable molecular tools. Here we report an infectious cDNA (icDNA) clone for ZIKV isolate BeH819015 from Brazil, which was selected as representative of South American ZIKV isolated at early stages of the outbreak...
November 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29020159/distinguishing-secondary-dengue-virus-infection-from-zika-virus-infection-with-previous-dengue-by-a-combination-of-three-simple-serological-tests
#9
Wen-Yang Tsai, Han Ha Youn, Carlos Brites, Jih-Jin Tsai, Jasmine Tyson, Celia Pedroso, Jan Felix Drexler, Mars Stone, Graham Simmons, Michael P Busch, Marion Lanteri, Susan L Stramer, Angel Balmaseda, Eva Harris, Wei-Kung Wang
Background: The explosive spread of Zika virus (ZIKV) and associated microcephaly present an urgent need for sensitive and specific serodiagnostic tests, particularly for pregnant women in dengue virus (DENV)-endemic regions. Recent reports of enhanced ZIKV replication by dengue-immune sera have raised concerns about the role of previous DENV infection on the risk and severity of microcephaly and other ZIKV complications. Methods: Enzyme-linked immunosorbent assays (ELISAs) based on ZIKV and DENV non-structural protein 1 (NS1) were established to test acute, convalescent-phase and post-convalescent-phase serum/plasma samples from reverse-transcription polymerase-chain reaction-confirmed-cases including 20 primary ZIKV, 25 ZIKV with previous dengue, 58 secondary DENV, and 16 primary DENV1 infections...
July 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29017720/insights-into-the-molecular-roles-of-zika-virus-in-human-reproductive-complications-and-congenital-neuropathologies
#10
REVIEW
Rajendra Gharbaran, Latchman Somenarain
The recent upsurge in the association of congenital neurological disorders and infection by the Zika virus (ZIKV) has resulted in increased research focus on the biology of this flavivirus. Studies in animal models indicate that ZIKV can breach the placental barrier and selectively infect and deplete neuroprogenitor cells (NPCs) of the developing fetus, resulting in changes of brain structures, reminiscent of human microcephaly. In vitro and ex vivo studies using human cells and tissues showed that human NPCs and placental cells are targeted by ZIKV...
October 7, 2017: Pathology
https://www.readbyqxmd.com/read/28989510/managing-screening-and-diagnosis-of-zika-in-the-emergency-department
#11
Lila de Tantillo, Juan M Gonzalez, Johis Ortega
Zika has emerged as a rapidly spreading infection worldwide. Clinicians in many parts of the world must be prepared to screen for symptoms and diagnose patients with this disease. In particular, pregnant women who may have experienced exposure to Zika must be treated with care and sensitivity due to serious risk for pregnancy complications among those who contract the infection. In response to the outbreak, patient management guidelines have been established for all who may be symptomatic or potentially at risk of infection with Zika...
March 2017: Journal of Infection Prevention
https://www.readbyqxmd.com/read/28978754/neutralizing-human-monoclonal-antibodies-prevent-zika-virus-infection-in-macaques
#12
Diogo M Magnani, Thomas F Rogers, Nathan Beutler, Michael J Ricciardi, Varian K Bailey, Lucas Gonzalez-Nieto, Bryan Briney, Devin Sok, Khoa Le, Alexander Strubel, Martin J Gutman, Núria Pedreño-Lopez, Nathan D Grubaugh, Cassia G T Silveira, Helen S Maxwell, Aline Domingues, Mauricio A Martins, David E Lee, Erica E Okwuazi, Sherrie Jean, Elizabeth A Strobert, Ann Chahroudi, Guido Silvestri, Thomas H Vanderford, Esper G Kallas, Ronald C Desrosiers, Myrna C Bonaldo, Stephen S Whitehead, Dennis R Burton, David I Watkins
Therapies to prevent maternal Zika virus (ZIKV) infection and its subsequent fetal developmental complications are urgently required. We isolated three potent ZIKV-neutralizing monoclonal antibodies (nmAbs) from the plasmablasts of a ZIKV-infected patient-SMZAb1, SMZAb2, and SMZAb5-directed against two different domains of the virus. We engineered these nmAbs with Fc LALA mutations that abrogate Fcγ receptor binding, thus eliminating potential therapy-mediated antibody-dependent enhancement. We administered a cocktail of these three nmAbs to nonhuman primates 1 day before challenge with ZIKV and demonstrated that the nmAbs completely prevented viremia in serum after challenge...
October 4, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28976850/safety-and-immunogenicity-of-an-anti-zika-virus-dna-vaccine-preliminary-report
#13
Pablo Tebas, Christine C Roberts, Kar Muthumani, Emma L Reuschel, Sagar B Kudchodkar, Faraz I Zaidi, Scott White, Amir S Khan, Trina Racine, Hyeree Choi, Jean Boyer, Young K Park, Sylvie Trottier, Celine Remigio, Diane Krieger, Susan E Spruill, Mark Bagarazzi, Gary P Kobinger, David B Weiner, Joel N Maslow
Background Although Zika virus (ZIKV) infection is typically self-limiting, other associated complications such as congenital birth defects and the Guillain-Barré syndrome are well described. There are no approved vaccines against ZIKV infection. Methods In this phase 1, open-label clinical trial, we evaluated the safety and immunogenicity of a synthetic, consensus DNA vaccine (GLS-5700) encoding the ZIKV premembrane and envelope proteins in two groups of 20 participants each. The participants received either 1 mg or 2 mg of vaccine intradermally, with each injection followed by electroporation (the use of a pulsed electric field to introduce the DNA sequence into cells) at baseline, 4 weeks, and 12 weeks...
October 4, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28954064/the-role-of-brazilian-national-health-information-systems-in-assessing-the-impact-of-zika-virus-outbreak
#14
Ana Luiza Braz Pavão, Christovam Barcellos, Marcel Pedroso, Cristiano Boccolini, Dália Romero
The Zika virus (ZIKV) epidemic has become a public health emergency following its association with severe neurological complications. We aim to discuss how the Brazilian National Health Information Systems can help to assess the impact of the ZIKV epidemic on health outcomes potentially related to ZIKV. Health outcomes potentially related to ZIKV infection were described based on a literature review of published studies on ZIKV infection outcomes and on recent protocols developed and published by the Brazilian Ministry of Health for different stages of the life cycle...
July 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28952036/therapeutic-approaches-for-zika-virus-infection-of-the-nervous-system
#15
Rachel P M Abrams, Jamie Solis, Avindra Nath
Zika virus has spread rapidly in the Americas and has caused devastation of human populations affected in these regions. The virus causes teratogenic effects involving the nervous system, and in adults and children can cause a neuropathy similar to Guillain-Barré syndrome, an anterior myelitis, or, rarely, an encephalitis. While major efforts have been undertaken to control mosquito populations that spread the virus and to develop a vaccine, drug development that directly targets the virus in an infected individual to prevent or treat the neurological manifestations is necessary...
September 26, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28934431/genetic-profiling-and-comorbidities-of-zika-infection
#16
Mohammad Ali Moni, Pietro Lio'
Background: The difficulty in distinguishing infection by Zika virus (ZIKV) from other flaviviruses is a global health concern, particularly given the high risk of neurologic complications (including Guillain-Barré syndrome [GBS]) with ZIKV infection. Methods: We developed quantitative frameworks to compare and explore infectome, diseasome, and comorbidity of ZIKV infections. We analyzed gene expression microarray and RNA-Seq data from ZIKV, West Nile fever (WNF), chikungunya, dengue, yellow fever, Japanese encephalitis virus, GBS, and control datasets...
September 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28933344/first-outbreak-of-zika-virus-in-the-continental-united-states-a-modelling-analysis
#17
Giovanni Marini, Giorgio Guzzetta, Roberto Rosà, Stefano Merler
Since 2015, Zika virus (ZIKV) has spread throughout Latin and Central America. This emerging infectious disease has been causing considerable public health concern because of severe neurological complications, especially in newborns after congenital infections. In July 2016, the first outbreak in the continental United States was identified in the Wynwood neighbourhood of Miami-Dade County, Florida. In this work, we investigated transmission dynamics using a mathematical model calibrated to observed data on mosquito abundance and symptomatic human infections...
September 14, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28916522/viral-infection-sensitizes-human-fetal-membranes-to-bacterial-lipopolysaccharide-by-mertk-inhibition-and-inflammasome-activation
#18
Sarah N Cross, Julie A Potter, Paulomi Aldo, Ja Young Kwon, Mary Pitruzzello, Mancy Tong, Seth Guller, Carla V Rothlin, Gil Mor, Vikki M Abrahams
Chorioamnionitis, premature rupture of fetal membranes (FMs), and subsequent preterm birth are associated with local infection and inflammation, particularly IL-1β production. Although bacterial infections are commonly identified, other microorganisms may play a role in the pathogenesis. Because viral pandemics, such as influenza, Ebola, and Zika, are becoming more common, and pregnant women are at increased risk for associated complications, this study evaluated the impact that viral infection had on human FM innate immune responses...
October 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28912011/cell-line-dependent-antiviral-activity-of-sofosbuvir-against-zika-virus
#19
Noreen Mumtaz, Leah C Jimmerson, Lane R Bushman, Jennifer J Kiser, Georgina Aron, Chantal B E M Reusken, Marion P G Koopmans, Jeroen J A van Kampen
The recent epidemic of Zika virus (ZIKV) in the Americas and its association with fetal and neurological complications has shown the need to develop a treatment. Repurposing of drugs that are already FDA approved or in clinical development may shorten drug development timelines in case of emerging viral diseases like ZIKV. Initial studies have shown conflicting results when testing sofosbuvir developed for treatment of infections with another Flaviviridae virus, hepatitis C virus. We hypothesized that the conflicting results could be explained by differences in intracellular processing of the compound...
September 11, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28893603/human-polyclonal-antibodies-produced-in-transchromosomal-cattle-prevent-lethal-zika-virus-infection-and-testicular-atrophy-in-mice
#20
Derek R Stein, Joseph W Golden, Bryan D Griffin, Bryce M Warner, Charlene Ranadheera, Leanne Scharikow, Angela Sloan, Kathy L Frost, Darwyn Kobasa, Stephanie A Booth, Matthew Josleyn, John Ballantyne, Eddie Sullivan, Jin-An Jiao, Hua Wu, Zhongde Wang, Jay W Hooper, David Safronetz
Zika virus (ZIKV) is rapidly spreading throughout the Americas and is associated with significant fetal complications, most notably microcephaly. Treatment with polyclonal antibodies for pregnant women at risk of ZIKV-related complications could be a safe alternative to vaccination. We found that large quantities of human polyclonal antibodies could be rapidly produced in transchromosomal bovines (TcB) and successfully used to protect mice from lethal infection. Additionally, antibody treatment eliminated ZIKV induced tissue damage in immunologically privileged sites such as the brain and testes and protected against testicular atrophy...
September 8, 2017: Antiviral Research
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