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Guillain–Barré zika

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https://www.readbyqxmd.com/read/28728607/zika-virus-transmission-to-mouse-ear-by-mosquito-bite-a-laboratory-model-that-replicates-the-natural-transmission-process
#1
Nagila Francinete Costa Secundino, Barbara Aparecida Chaves, Alessandra Silva Orfano, Karine Renata Dias Silveira, Nilton Barnabe Rodrigues, Thais Bonifácio Campolina, Rafael Nacif-Pimenta, Luiz Eduardo Martinez Villegas, Breno Melo Silva, Marcus Vinícius Guimarães Lacerda, Douglas Eric Norris, Paulo Filemon Paolucci Pimenta
BACKGROUND: Zika disease has transformed into a serious global health problem due to the rapid spread of the arbovirus and alarming severity including congenital complications, microcephaly and Guillain-Barré syndrome. Zika virus (ZIKV) is primarily transmitted to humans through the bite of an infective mosquito, with Aedes aegypti being the main vector. METHODS: We successfully developed a ZIKV experimental transmission model by single infectious Ae. aegypti bite to a laboratory mouse using circulating Brazilian strains of both arbovirus and vector...
July 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28719506/zika-virus-associated-ocular-and-neurologic-disorders-the-emergence-of-new-evidence
#2
Fatih Şahiner, Ali Korhan Siğ, Ümit Savaşçi, Kemal Tekin, Fahrettin Akay
BACKGROUND: It has been approximately 70 years since the discovery of the Zika virus (ZIKV). It had been established that the virus causes mild infections, and is confined to Africa and Asia; however, major changes in the clinical and epidemiologic patterns of ZIKV infection have occurred in recent years. The virus has attracted intense interest because of the possible association of several autoimmune and neurodevelopmental disorders. METHODS: We present a summary of the articles that attempt to explain the ZIKV unknowns, and strengthen the association with some disorders that are thought to be related to ZIKV, by describing the discovery milestones from the initial identification of the virus to the present day...
July 13, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28716913/antibody-based-assay-discriminates-zika-virus-infection-from-other-flaviviruses
#3
Angel Balmaseda, Karin Stettler, Raquel Medialdea-Carrera, Damaris Collado, Xia Jin, José Victor Zambrana, Stefano Jaconi, Elisabetta Cameroni, Saira Saborio, Francesca Rovida, Elena Percivalle, Samreen Ijaz, Steve Dicks, Ines Ushiro-Lumb, Luisa Barzon, Patricia Siqueira, David W G Brown, Fausto Baldanti, Richard Tedder, Maria Zambon, A M Bispo de Filippis, Eva Harris, Davide Corti
Zika virus (ZIKV) is a mosquito-borne flavivirus that emerged recently as a global health threat, causing a pandemic in the Americas. ZIKV infection mostly causes mild disease, but is linked to devastating congenital birth defects and Guillain-Barré syndrome in adults. The high level of cross-reactivity among flaviviruses and their cocirculation has complicated serological approaches to differentially detect ZIKV and dengue virus (DENV) infections, accentuating the urgent need for a specific and sensitive serological test...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28712937/returning-ex-patriot-chinese-to-guangdong-china-increase-the-risk-for-local-transmission-of-zika-virus
#4
Jiufeng Sun, De Wu, Haojie Zhong, Dawei Guan, Huan Zhang, Qiqi Tan, Huiqiong Zhou, Meng Zhang, Dan Ning, Baohuan Zhang, Changwen Ke, Tie Song, Jinyan Lin, Yonghui Zhang, Marion Koopmans, George F Gao
OBJECTIVES: Rapid transmission and linkage to microcephaly and Guillain-Barre syndrome have made Zika virus (ZIKV) infection become a serious threat to global public health. The epidemiology, virological characteristics and genetic evolution of introduced ZIKV to Guangdong, China, were investigated. METHODS: Analyses of the epidemiological characteristics and genetic diversity of ZIKV isolates were performed. RESULTS: Nineteen confirmed ZIKV infection cases were imported from Venezuela and Samoa...
July 14, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28700665/solution-conformations-of-zika-ns2b-ns3pro-and-its-inhibition-by-natural-products-from-edible-plants
#5
Amrita Roy, Liangzhong Lim, Shagun Srivastava, Yimei Lu, Jianxing Song
The recent Zika viral (ZIKV) epidemic has been associated with severe neurological pathologies such as neonatal microcephaly and Guillain-Barre syndrome but unfortunately no vaccine or medication is effectively available yet. Zika NS2B-NS3pro is essential for the proteolysis of the viral polyprotein and thereby viral replication. Thus NS2B-NS3pro represents an attractive target for anti-Zika drug discovery/design. Here, we have characterized the solution conformations and catalytic parameters of both linked and unlinked Zika NS2B-NS3pro complexes and found that the unlinked complex manifested well-dispersed NMR spectra...
2017: PloS One
https://www.readbyqxmd.com/read/28694390/in-vitro-susceptibility-of-geographically-and-temporally-distinct-zika-viruses-to-favipiravir-and-ribavirin
#6
Mariana Baz, Nathalie Goyette, Bryan D Griffin, Gary P Kobinger, Guy Boivin
BACKGROUND: Zika virus (ZIKV), a previously neglected mosquito-borne virus, is prompting worldwide concern because of its connection with congenital defects, Guillain-Barré syndrome, meningoencephalitis and myelitis in infected individuals. However, no specific antiviral therapy is available at present. In this study, we investigated the in vitro susceptibility of geographically and temporally distinct zika viruses against the RNA polymerase inhibitors, favipiravir (T-705) and ribavirin (RIBV)...
July 11, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28686621/risk-of-bias-and-confounding-of-observational-studies-of-zika-virus-infection-a-scoping-review-of-research-protocols
#7
Ludovic Reveiz, Michelle M Haby, Ruth Martínez-Vega, Carlos E Pinzón-Flores, Vanessa Elias, Emma Smith, Mariona Pinart, Nathalie Broutet, Francisco Becerra-Posada, Sylvain Aldighieri, Maria D Van Kerkhove
INTRODUCTION: Given the severity and impact of the current Zika virus (ZIKV) outbreak in the Americas, numerous countries have rushed to develop research studies to assess ZIKV and its potential health consequences. In an effort to ensure that studies are comprehensive, both internally and externally valid, and with reliable results, the World Health Organization, the Pan American Health Organization, Institut Pasteur, the networks of Fiocruz, the Consortia for the Standardization of Influenza Seroepidemiology (CONSISE) and the International Severe Acute Respiratory and Emerging Infection Consortium (ISARIC) have generated six standardized clinical and epidemiological research protocols and questionnaires to address key public health questions on ZIKV...
2017: PloS One
https://www.readbyqxmd.com/read/28673675/-zika-virus-infection-a-review
#8
A Guillier, E Amazan, A Aoun, E Baubion, C Derancourt
Zika Virus (ZIKV), originally identified in 1947, is a re-emerging Flavivirus transmitted mainly through bites by Aedes mosquitos. Until the recent outbreaks in the Pacific islands and Central and South America, it was known to cause benign disease, in most cases asymptomatic or with mild and nonspecific symptoms (fever, rash, conjunctivitis, arthralgia, etc.). The unprecedented current epidemic has highlighted new modes of transmission (through blood, perinatally and sexually) as well as serious neurological complications such as congenital defects in the fetuses of infected mothers and Guillain-Barre syndrome in adults...
June 30, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28669037/in-vitro-study-of-zika-virus-infection-in-boar-semen
#9
Natthanej Luplertlop, San Suwanmanee, Sumate Ampawong, Sompong Vongpunsawad, Yong Poovorawan
Zika virus (ZIKV) is an important arbovirus that is capable of directly infecting neuronal cells. Infection can cause microcephaly in fetuses and Guillain-Barré syndrome in adults. Recent epidemiological studies have shown that ZIKV is sexually transmitted, especially from infected males to uninfected females. This study aimed to investigate the transmission pattern of ZIKV in semen using boar semen. Experiments were performed ex vivo using semen from healthy boar. The samples were infected with ZIKV, and viral RNA was detected and cell morphology was examined at different time points postinfection...
July 1, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28666829/epigallocatechin-gallate-an-active-green-tea-compound-inhibits-the-zika-virus-entry-into-host-cells-via-binding-the-envelope-protein
#10
Nitin Sharma, Aarthy Murali, Sanjeev Kumar Singh, Rajanish Giri
Emerging infections of Zika virus (ZIKV) are associated with serious consequences like microcephaly and Guillain-Barré syndrome. It leads to a situation of global health emergency and demand an intensive research investigation to develop safe and effective therapeutics. Various efforts have been made to reduce the pathological pressure of ZIKV, but no effective drug has been introduced against ZIKV infections. A recent study has reported the inhibition of ZIKV entry into the host cells by an active green tea ingredient, Epigallocatechin Gallate (EGCG) in Vero E6cells...
June 28, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28661429/effective-suckling-c57bl-6-kunming-and-balb-c-mouse-models-with-remarkable-neurological-manifestation-for-zika-virus-infection
#11
Jianhai Yu, Xuling Liu, Changwen Ke, Qinghua Wu, Weizhi Lu, Zhiran Qin, Xiaoen He, Yujing Liu, Jieli Deng, Suiqi Xu, Ying Li, Li Zhu, Chengsong Wan, Qiwei Zhang, Weiwei Xiao, Qian Xie, Bao Zhang, Wei Zhao
Since 2015, 84 countries and territories reported evidence of vector-borne Zika Virus (ZIKV) transmission. The World Health Organization (WHO) declared that ZIKV and associated consequences especially the neurological autoimmune disorder Guillain-Barré syndrome (GBS) and microcephaly will remain a significant enduring public health challenge requiring intense action. We apply a standardization of the multi-subcutaneous dorsal inoculation method to systematically summarize clinical neurological manifestation, viral distribution, and tissue damage during the progress of viremia and systemic spread in suckling mouse models...
June 29, 2017: Viruses
https://www.readbyqxmd.com/read/28655548/recent-advances-in-understanding-the-adaptive-immune-response-to-zika-virus-and-the-effect-of-previous-flavivirus-exposure
#12
REVIEW
Daniela V Andrade, Eva Harris
Zika virus (ZIKV) caused explosive epidemics across the Americas, starting in Brazil in 2015, and has been associated with severe manifestations such as microcephaly in babies born to infected mothers and Guillain-Barré syndrome in adults. As the underlying mechanisms of pathogenesis remain largely unknown, diverse investigations have focused on a potential role for flavivirus cross-reactive antibodies in enhancing ZIKV infection. Antibody-dependent enhancement is especially concerning due to structural similarities between ZIKV and other flaviviruses, especially dengue virus (DENV), that co-circulate in areas affected by ZIKV...
June 24, 2017: Virus Research
https://www.readbyqxmd.com/read/28650987/accuracy-of-zika-virus-disease-case-definition-during-simultaneous-dengue-and-chikungunya-epidemics
#13
José Ueleres Braga, Clarisse Bressan, Ana Paula Razal Dalvi, Guilherme Amaral Calvet, Regina Paiva Daumas, Nadia Rodrigues, Mayumi Wakimoto, Rita Maria Ribeiro Nogueira, Karin Nielsen-Saines, Carlos Brito, Ana Maria Bispo de Filippis, Patrícia Brasil
BACKGROUND: Zika is a new disease in the American continent and its surveillance is of utmost importance, especially because of its ability to cause neurological manifestations as Guillain-Barré syndrome and serious congenital malformations through vertical transmission. The detection of suspected cases by the surveillance system depends on the case definition adopted. As the laboratory diagnosis of Zika infection still relies on the use of expensive and complex molecular techniques with low sensitivity due to a narrow window of detection, most suspected cases are not confirmed by laboratory tests, mainly reserved for pregnant women and newborns...
2017: PloS One
https://www.readbyqxmd.com/read/28638259/global-alert-zika-virus-an-emerging-arbovirus
#14
REVIEW
Zulal Ozkurt, Esra Cinar Tanriverdi
Zika virus (ZIKV) is an arbovirus of the Flavivirus genus, and it has an envelope and a single RNA molecule. In early 2016, the World Health Organization declared ZIKV infection to be an emerging global health threat. The major transmission route of the virus to humans is Aedes mosquitoes. ZIKV can be transmitted between humans by transplacental, perinatal, and sexual routes and via blood and body fluids. ZIKV infection usually results in a mild and self-limiting disease with low-grade fever, conjunctivitis, and periorbital edema...
June 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28632511/zika-virus-a-cause-of-concern-in-transplantation
#15
Marilyn E Levi
PURPOSE OF REVIEW: Worldwide, the number of countries reporting Zika virus (ZKV) infection continues to increase. Although 80% of cases are asymptomatic, ZKV has been identified as a neurotropic virus associated with congenital microcephaly, Guillain-Barre' syndrome, and meningoencephalitis. Until recently, infection in transplant recipients has not been identified. This study will review the existing literature on ZKV infection, laboratory testing, and management in transplant recipients...
August 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28617719/guillain-barr%C3%A3-syndrome-and-zika-virus-outbreaks
#16
Osvaldo J M Nascimento, Ivan R F da Silva
PURPOSE OF REVIEW: Arboviruses have been associated with central and peripheral nervous system injuries, in special the flaviviruses. Guillain-Barré syndrome (GBS), transverse myelitis, meningoencephalitis, ophthalmological manifestations, and other neurological complications have been recently associated to Zika virus (ZIKV) infection. In this review, we aim to analyze the epidemiological aspects, possible pathophysiology, and what we have learned about the clinical and laboratory findings, as well as treatment of patients with ZIKV-associated neurological complications...
June 14, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28601976/zika-virus-as-an-emerging-neuropathogen-mechanisms-of-neurovirulence-and-neuro-immune-interactions
#17
REVIEW
Gerwyn Morris, Tatiana Barichello, Brendon Stubbs, Cristiano A Köhler, André F Carvalho, Michael Maes
Zika virus (ZIKV) is an emerging arbovirus of the genus Flaviviridae, which causes a febrile illness and has spread from across the Pacific to the Americas in a short timeframe. Convincing evidence has implicated the ZIKV to incident cases of neonatal microcephaly and a set of neurodevelopmental abnormalities referred to as the congenital Zika virus syndrome. In addition, emerging data points to an association with the ZIKV and the development of the so-called Guillain-Barre syndrome, an acute autoimmune polyneuropathy...
June 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28592527/zika-virus-hijacks-stress-granule-proteins-and-modulates-the-host-stress-response
#18
Shangmei Hou, Anil Kumar, Zaikun Xu, Adriana M Airo, Iryna Stryapunina, Cheung Pang Wong, William Branton, Egor Tchesnokov, Matthias Götte, Christopher Power, Tom C Hobman
Zika virus (ZIKV), a member of the Flaviviridae family, has recently emerged as an important human pathogen with increasing economic and health impact worldwide. Because of its teratogenic nature and association with the serious neurological condition Guillain-Barré syndrome, a tremendous amount of effort has focused on understanding ZIKV pathogenesis. To gain further insights into ZIKV interaction with host cells, we investigated how this pathogen affects stress response pathways. While ZIKV infection induces stress signaling that leads to phosphorylation of eIF2α and cellular translational arrest, stress granule (SG) formation was inhibited...
June 7, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28577343/de-novo-rna-synthesis-catalyzed-by-the-zika-virus-rna-polymerase-domain
#19
Christina Calmels, Michel Ventura, Cindy Aknin, Mathieu Métifiot, Marie-Line Andreola
Mosquito- and tick-borne pathogens including Chikungunya, Dengue, Japanese encephalitis, West Nile, Yellow fever and Zika virus, represent a new economic and public health challenge. In the absence of effective vaccines and specific therapies, only supportive regimens are administrated for most of these infections. Thus, the development of a targeted therapy is mandatory to stop the rapid progression of these pathogens and preoccupant associated burdens such as Guillain-Barre syndrome, microcephaly. For this, it is essential to develop biochemical tools to help study and target key viral enzymes involved in replication such as helicase complexes, methyl-transferases and RNA-dependent RNA polymerases...
June 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28575919/zika-virus-infection-in-pregnant-women-and-microcephaly
#20
Geraldo Duarte, Antonio Fernandes Moron, Artur Timerman, César Eduardo Fernandes, Corintio Mariani Neto, Gutemberg Leão de Almeida Filho, Heron Werner Junior, Hilka Flavia Barra do Espírito Santo, João Alfredo Piffero Steibel, João Bortoletti Filho, Juvenal Barreto Borriello de Andrade, Marcelo Burlá, Marcos Felipe Silva de Sá, Newton Eduardo Busso, Paulo César Giraldo, Renato Augusto Moreira de Sá, Renato Passini Junior, Rosiane Mattar, Rossana Pulcineli Vieira Francisco
From the discovery of the Zika virus (ZIKV) in 1947 in Uganda (Africa), until its arrival in South America, it was not known that it would affect human reproductive life so severely. Today, damage to the central nervous system is known to be multiple, and microcephaly is considered the tip of the iceberg. Microcephaly actually represents the epilogue of this infection's devastating process on the central nervous system of embryos and fetuses. As a result of central nervous system aggression by the ZIKV, this infection brings the possibility of arthrogryposis, dysphagia, deafness and visual impairment...
May 2017: Revista Brasileira de Ginecologia e Obstetrícia
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