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Guillain–Barré zika

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https://www.readbyqxmd.com/read/29140242/guillain-barr%C3%A3-syndrome-acute-disseminated-encephalomyelitis-and-encephalitis-associated-with-zika-virus-infection-in-brazil-detection-of-viral-rna-and-isolation-of-virus-during-late-infection
#1
Maria Lucia Brito Ferreira, Carlos Alexandre Antunes de Brito, Álvaro José Porto Moreira, Maria Íris de Morais Machado, Adélia Henriques-Souza, Marli Tenório Cordeiro, Ernesto Torres de Azevedo Marques, Lindomar José Pena
Zika virus (ZIKV) emerged in Brazil in 2015, which was followed by an increase of Guillain-Barre Syndrome (GBS) cases. We report the epidemiological, clinical, and laboratory findings of the first six neurological cases associated with ZIKV in Brazil seen in a reference neurology hospital in Pernambuco, Brazil. In all cases, ZIKV was detected in serum and/or cerebrospinal fluid (CSF) samples. In this case series, four cases were defined as GBS, one as acute disseminated encephalomyelitis (ADEM) and the other as encephalitis...
November 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29135369/t-cell-immunity-to-zika-and-dengue-viral-infections
#2
Jinsheng Wen, Sujan Shresta
The 2015-2016 Zika virus (ZIKV) outbreak in the Americas has brought this relatively unknown flavivirus into the spotlight as the etiologic agent of congenital Zika syndrome in newborns and, potentially, of Guillain-Barré syndrome in adults. ZIKV shares a high degree of amino acid sequence homology with the closely related flavivirus Dengue virus (DENV). Due to the paucity of research investigating T cell-mediated immune responses to ZIKV, the precise roles of T cells in protection against and pathogenesis of ZIKV infection are unclear...
November 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29126899/merimepodib-an-impdh-inhibitor-suppresses-replication-of-zika-virus-and-other-emerging-viral-pathogens
#3
Xiao Tong, Jeanon Smith, Natalya Bukreyeva, Takaaki Koma, Tyler J Manning, Raj Kalkeri, Ann D Kwong, Slobodan Paessler
Zika virus (ZIKV), a member of the Flaviviridae family, has recently been linked to abnormal pregnancies, fetal death, microcephaly, and Guillain-Barré syndrome in humans. Merimepodib (MMPD, VX-497), a potent inhibitor of inosine-5'-monophosphate dehydrogenase (IMPDH), has shown antiviral activity against HCV and a variety of DNA and RNA viruses in vitro. In this report, we expand the antiviral spectrum of MMPD, and demonstrate that MMPD inhibits ZIKV RNA replication with an EC50 of 0.6 μM. In a virus production assay, MMPD reduces the virus titer of ZIKV as well as several other important emerging viral pathogens such as Ebola, Lassa, Chikungunya, and Junin viruses...
November 7, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29118981/zika-virus-disease-microcephaly-and-guillain-barr%C3%A3-syndrome-in-colombia-epidemiological-situation-during-21%C3%A2-months-of-the-zika-virus-outbreak-2015-2017
#4
Nelson Méndez, Misael Oviedo-Pastrana, Salim Mattar, Isaac Caicedo-Castro, German Arrieta
Background: The Zika virus disease (ZVD) has had a huge impact on public health in Colombia for the numbers of people affected and the presentation of Guillain-Barre syndrome (GBS) and microcephaly cases associated to ZVD. Methods: A retrospective descriptive study was carried out, we analyze the epidemiological situation of ZVD and its association with microcephaly and GBS during a 21-month period, from October 2015 to June 2017. The variables studied were: (i) ZVD cases, (ii) ZVD cases in pregnant women, (iii) laboratory-confirmed ZVD in pregnant women, (iv) ZVD cases associated with microcephaly, (v) laboratory-confirmed ZVD associated with microcephaly, and (vi) ZVD associated to GBS cases...
2017: Archives of Public Health, Archives Belges de Santé Publique
https://www.readbyqxmd.com/read/29116029/zikv-infection-effects-changes-in-gene-splicing-isoform-composition-and-lncrna-expression-in-human-neural-progenitor-cells
#5
Benxia Hu, Yongxia Huo, Liping Yang, Guijun Chen, Minhua Luo, Jinlong Yang, Jumin Zhou
BACKGROUND: The Zika virus (ZIKV) is a mosquito-borne flavivirus that causes microcephaly and Guillain-Barré syndrome in infected individuals. To obtain insights into the mechanism of ZIKV infection and pathogenesis, we analyzed the transcriptome of ZIKV infected human neural progenitor cells (hNPCs) for changes in alternative splicing (AS), gene isoform (ISO) composition and long noncoding RNAs (lncRNAs) expression. METHODS: We analyzed differentially expressed lncRNAs, AS, ISO from RNA-seq data in ZIKV infected hNPCs...
November 7, 2017: Virology Journal
https://www.readbyqxmd.com/read/29108750/new-spectrum-of-the-neurologic-consequences-of-zika
#6
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/29096380/discovery-of-potential-zika-virus-rna-polymerase-inhibitors-by-docking-based-virtual-screening
#7
Anjali Singh, Nandan Kumar Jana
Zika virus (ZIKV) infection has been associated with Guillain-Barre syndrome in adults and microcephaly in infants. The existence of insufficient structural data in most of the protein databases hinders the synthesis of anti-ZIKV pharmaceutics. In this work, we attempted to model the catalytic domain of the ZIKV RNA polymerase (RdRpC) along with a detailed assessment of conserved aspartates in ZIKV RdRpC palm domain as potential drug targets. The conserved and catalytically active aspartate residues present in the predicted RdRpC protein were virtually screened against a ZINC database for inhibitors, and the selected potential drug candidates were further filtered based on their ADMET profiles...
October 24, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29096005/management-of-zika-virus-in-pregnancy-a-review
#8
Helen Perry, Asma Khalil, Emma Aarons, Katherine Russell, Patrick O'Brien
Introduction/background: Since 2015, an epidemic of Zika virus spread across the Americas. This coincided with an increased incidence of microcephaly reported at birth in Brazil, with subsequent evidence of a causal association. Sources of data: Systemic reviews, observational studies, public health organizations. Areas of agreement: Zika virus causes microcephaly and brain abnormalities in infants born to mothers infected during or shortly before pregnancy...
October 31, 2017: British Medical Bulletin
https://www.readbyqxmd.com/read/29093650/understanding-the-pathogenesis-of-zika-virus-infection-using-animal-models
#9
REVIEW
Keeton K Krause, Francine Azouz, Ok Sarah Shin, Mukesh Kumar
Zika virus (ZIKV) is a member of Flaviviridae family that has emerged as a pathogen of significant public health importance. The rapid expansion of ZIKV in the South and Central America has recently gained medical attention emphasizing the capacity of ZIKV to spread to non-endemic regions. ZIKV infection during pregnancy has been demonstrated to cause microcephaly and other fetal developmental abnormalities. An increased incidence of Guillain-Barre syndrome, an immune mediated neuropathy of the peripheral nervous system, has also been reported in ZIKV-infected patients in French Polynesia and Brazil...
October 2017: Immune Network
https://www.readbyqxmd.com/read/29091758/functional-analysis-of-glycosylation-of-zika-virus-envelope-protein
#10
Camila R Fontes-Garfias, Chao Shan, Huanle Luo, Antonio E Muruato, Daniele B A Medeiros, Elizabeth Mays, Xuping Xie, Jing Zou, Christopher M Roundy, Maki Wakamiya, Shannan L Rossi, Tian Wang, Scott C Weaver, Pei-Yong Shi
Zika virus (ZIKV) infection causes devastating congenital abnormities and Guillain-Barré syndrome. The ZIKV envelope (E) protein is responsible for viral entry and represents a major determinant for viral pathogenesis. Like other flaviviruses, the ZIKV E protein is glycosylated at amino acid N154. To study the function of E glycosylation, we generated a recombinant N154Q ZIKV that lacks the E glycosylation and analyzed the mutant virus in mammalian and mosquito hosts. In mouse models, the mutant was attenuated, as evidenced by lower viremia, decreased weight loss, and no mortality; however, knockout of E glycosylation did not significantly affect neurovirulence...
October 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/29091713/after-the-epidemic-zika-virus-projections-for-latin-america-and-the-caribbean
#11
Felipe J Colón-González, Carlos A Peres, Christine Steiner São Bernardo, Paul R Hunter, Iain R Lake
BACKGROUND: Zika is one of the most challenging emergent vector-borne diseases, yet its future public health impact remains unclear. Zika was of little public health concern until recent reports of its association with congenital syndromes. By 3 August 2017 ∼217,000 Zika cases and ∼3,400 cases of associated congenital syndrome were reported in Latin America and the Caribbean. Some modelling exercises suggest that Zika virus infection could become endemic in agreement with recent declarations from the The World Health Organisation...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29051080/antiviral-activity-of-n-4-hydroxyphenyl-retinamide-4-hpr-against-zika-virus
#12
Jared D Pitts, Pi-Chun Li, Melissanne de Wispelaere, Priscilla L Yang
The rapid spread of Zika virus (ZIKV) in recent years has highlighted the severe diseases associated with ZIKV infection, such as Guillain-Barré syndrome in adults and microcephaly in newborns; yet no vaccines or antivirals currently exist to prevent or treat ZIKV infection. We and others have previously identified N-(4-hydroxyphenyl) retinamide (fenretinide or 4-HPR) as an antiviral compound that inhibits dengue virus 2 (DV2) and other flaviviruses by limiting the steady-state accumulation of viral RNA. Here we show that 4-HPR potently inhibits ZIKV in mammalian cell culture and significantly reduces both serum viremia and brain viral burden in a murine model of ZIKV infection...
November 2017: Antiviral Research
https://www.readbyqxmd.com/read/29050846/zika-virus-what-where-from-and-where-to
#13
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/29049645/acute-zika-virus-infection-as-a-risk-factor-for-guillain-barr%C3%A3-syndrome-in-puerto-rico
#14
Emilio Dirlikov, Nicole A Medina, Chelsea G Major, Jorge L Munoz-Jordan, Carlos A Luciano, Brenda Rivera-Garcia, Tyler M Sharp
No abstract text is available yet for this article.
October 17, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29037898/zika-virus-and-autoimmunity-one-step-forward
#15
REVIEW
Diana M Monsalve, Yovana Pacheco, Yeny Acosta-Ampudia, Yhojan Rodríguez, Carolina Ramírez-Santana, Juan-Manuel Anaya
Zika virus (ZIKV) infection has been associated with the development of Guillain-Barré syndrome (GBS) and idiopathic thrombocytopenic purpura (ITP). Whether ZIKV infection is related to other autoimmune diseases is unknown. Therefore, an association study to evaluate rheumatic and thyroid autoimmunity in patients with ZIKV disease was conducted through a panel of 14 autoantibodies. In addition, a literature review on ZIKV, and GBS and ITP was performed. Our results disclosed a lack of association of rheumatoid and thyroid autoimmunity with ZIKV disease...
October 14, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29028178/zika-virus-immune-evasion-mechanisms-currently-available-therapeutic-regimens-and-vaccines
#16
Arun Asif, Sobia Manzoor, Fatima Tuz-Zahra, Muhammad Saalim, Maliha Ashraf, Javeria Ishtiyaq, Madiha Khalid
The sudden emergence of infectious pathogens such as Zika virus (ZIKV) holds global health concerns. Recent dissemination of ZIKV from Pacific to Americas with an upsurge of congenital anomalies and Guillain Barre Syndrome (GBS) in adults has created an alarming situation. High-throughput studies are in progress to understand ZIKV's mode of pathogenesis and mechanism of immune escape, yet the pathogenesis remains obscure. Mainly ZIKV's envelope (E) protein and nonstructural proteins (mainly NS1 and NS5) manipulate host cell to support viral immune escape by modulation of the interferon pathway and complement antagonism...
October 13, 2017: Viral Immunology
https://www.readbyqxmd.com/read/29027940/zika-virus-persistently-and-productively-infects-primary-adult-sensory-neurons-in-vitro
#17
Brianna K Swartwout, Marta G Zlotnick, Ashley E Saver, Caroline M McKenna, Andrea S Bertke
Zika virus (ZIKV) has recently surged in human populations, causing an increase in congenital and Guillain-Barré syndromes. While sexual transmission and presence of ZIKV in urine, semen, vaginal secretions, and saliva have been established, the origin of persistent virus shedding into biological secretions is not clear. Using a primary adult murine neuronal culture model, we have determined that ZIKV persistently and productively infects sensory neurons of the trigeminal and dorsal root ganglia, which innervate glands and mucosa of the face and the genitourinary tract, respectively, without apparent injury...
October 13, 2017: Pathogens
https://www.readbyqxmd.com/read/29022864/reverse-genetic-system-genetically-stable-reporter-viruses-and-packaged-subgenomic-replicon-based-on-a-brazilian-zika-virus-isolate
#18
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/29020245/guillain-barr%C3%A3-syndrome-associated-with-zika-virus-infection-in-martinique-in-2016-a-prospective-study
#19
Benoît Rozé, Fatiha Najioullah, Jean-Louis Fergé, Frédérique Dorléans, Kossivi Apetse, Jose-Luis Barnay, Elise Daudens-Vaysse, Yannick Brouste, Raymond Césaire, Laurence Fagour, Ruddy Valentino, Martine Ledrans, Hossein Mehdaoui, Sylvie Abel, Isabelle Leparc-Goffart, Aissatou Signate, André Cabié
Background: Guillain-Barré syndrome (GBS) has been reported to be associated with Zika virus (ZIKV) infection in case reports and retrospective studies, mostly on the basis of serological tests, with the problematic cross-reacting antibodies of the Flavivirus genus. Some GBS cases do not exhibit a high level of diagnostic certainty. This prospective study aimed to describe the clinical profiles and the frequency of GBS associated with ZIKV during the ZIKV outbreak in Martinique in 2016...
July 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28991697/zika-virus-disease-associated-guillain-barr%C3%A3-syndrome-barranquilla-colombia-2015-2016
#20
Jorge L Salinas, Diana M Walteros, Ashley Styczynski, Flavio Garzón, Hernán Quijada, Elsa Bravo, Pablo Chaparro, Javier Madero, Jorge Acosta-Reyes, Jeremy Ledermann, Zuleima Arteta, Erin Borland, Paul Burns, Maritza Gonzalez, Ann M Powers, Marcela Mercado, Alma Solano, James J Sejvar, Martha L Ospina
BACKGROUND: An outbreak of Guillain-Barré syndrome (GBS), a disorder characterized by acute, symmetric limb weakness with decreased or absent deep-tendon reflexes, was reported in Barranquilla, Colombia, after the introduction of Zika virus in 2015. We reviewed clinical data for GBS cases in Barranquilla and performed a case-control investigation to assess the association of suspect and probable Zika virus disease with GBS. METHODS: We used the Brighton Collaboration Criteria to confirm reported GBS patients in Barranquilla during October 2015-April 2016...
October 15, 2017: Journal of the Neurological Sciences
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