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Zika infections and complications

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https://www.readbyqxmd.com/read/28806562/zika-virus-induced-neurological-critical-illness-in-latin-america-severe-guillain-barre-syndrome-and-encephalitis
#1
Sebastián U Ugarte, Angel Ricardo V Arenas, Bruno C Alvarez, Angela Cubides, Angélica F Luna, Max Arroyo-Parejo, Cayri E Acuña, Agamenón V Quintero, Orlando Ch Villareal, Oscar S Pinillos, Elías Vieda, Manuel Bello, Susana Peña, Carmelo Dueñas-Castell, Gloria M V Rodriguez, Jorge L M Ranero, Rosa L M López, Sandra G Olaya, José C Vergara, Ana Tandazo, Juan P S Ospina, Igor M Leyton Soto, R A Fowler, John C Marshall
Zika virus (ZIKAV) is classically described as causing minor symptoms in adult patients, however neurologic complications have been recognized. The recent outbreak in Central and South America has resulted in serious illness in some adult patients. We report adult patients in Latin America diagnosed with ZIKAV infection admitted to Intensive Care Units (ICUs). METHODS: Multicenter, prospective case series of adult patients with laboratory diagnosis of ZIKAV in 16 ICUs in 8 countries. RESULTS: Between December 1st 2015 and April 2nd 2016, 16 ICUs in 8 countries enrolled 49 critically ill patients with diagnosis of ZIKAV infection...
August 9, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28806479/zika-virus-disease-in-children-in-colombia-august-2015-to-may-2016
#2
Natalia Tolosa, Sarah C Tinker, Oscar Pacheco, Diana Valencia, Daniela Salas Botero, Van T Tong, Marcela Mercado, Suzanne M Gilboa, Maritza Gonzalez, Christina A Nelson, Lissethe Pardo, Carol Y Rao, Angélica Rico, Meredith Moore, Edgar Parra, Margaret A Honein, Martha L Ospina Martínez
BACKGROUND: Children are considered a potentially vulnerable population for Zika virus infection. However, data on paediatric Zika virus infection are sparse. METHODS: We analysed data from Colombia's national surveillance system during the 2015-2016 Zika virus outbreak on patients meeting the clinical case definition of Zika virus disease (ZVD) among children aged 1 month to 18 years to estimate incidence by demographic characteristics and characterize the occurrence of selected complications...
August 14, 2017: Paediatric and Perinatal Epidemiology
https://www.readbyqxmd.com/read/28806453/neurologic-complications-associated-with-the-zika-virus-in-brazilian-adults
#3
Ivan Rocha Ferreira da Silva, Jennifer A Frontera, Ana Maria Bispo de Filippis, Osvaldo Jose Moreira do Nascimento
Importance: There are no prospective cohort studies assessing the incidence and spectrum of neurologic manifestations secondary to Zika virus (ZIKV) infection in adults. Objective: To evaluate the rates of acute ZIKV infection among patients hospitalized with Guillain-Barré syndrome (GBS), meningoencephalitis, or transverse myelitis. Design, Setting, and Participants: A prospective, observational cohort study was conducted at a tertiary referral center for neurological diseases in Rio de Janeiro, Brazil, between December 5, 2015, and May 10, 2016, among consecutive hospitalized adults (>18 years of age) with new-onset acute parainfectious or neuroinflammatory disease...
August 14, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28798738/zika-virus-an-emerging-worldwide-threat
#4
Irfan A Rather, Jameel B Lone, Vivek K Bajpai, Woon K Paek, Jeongheui Lim
ZIKA virus (ZIKV) poses a severe threat to the world. Recent outbreaks of ZIKV after 2007 along with its quick transmission have made this virus a matter of international concern. The virus shows symptoms that are similar to those caused in the wake of dengue virus (DENV) and other flaviviruses, which makes it difficult to discern the viral infection. Diagnosis is further complicated as the virus cross-reacts with antibodies of other viruses. Currently, molecular diagnosis of the virus is being performed by RT-PCR and IgM-captured enzyme-linked immunosorbent assay (MAC-ELISA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28795959/zika-virus-and-the-eye
#5
Bruno de Paula Freitas, Camila V Ventura, Mauricio Maia, Rubens Belfort
PURPOSE OF REVIEW: The aim of this study was to review the ocular findings related to the Zika virus (ZIKV) based on the main studies published to date, describe the patterns of the lesions and risk factors, and identify the public health implications and scientific importance of this emerging disease. RECENT FINDINGS: In most studies, the ZIKV seems related to congenital ocular lesions and most mothers reported mild symptoms during the first pregnancy trimester...
August 8, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28794181/a-neutralization-assay-for-zika-and-dengue-viruses-using-a-real-time-pcr-based-endpoint-assessment
#6
Heather L Wilson, Thomas Tran, Julian Druce, Myrielle Dupont-Rouzeyrol, Michael Catton
The global spread and infective complications of Zika virus (ZKV) and Dengue virus (DENV) have made them flaviviruses of public health concern. Serological diagnosis can be challenging due to antibody cross-reactivity, particularly in secondary flavivirus infections or when there is a history of flavivirus vaccination. The virus neutralization assay is considered to be the most specific assay for measurement of anti-flavivirus antibodies. This study describes an assay where neutralization endpoint is measured by real-time PCR, providing results within 72 hours...
August 9, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28789826/zika-virus-protease-an-antiviral-drug-target
#7
REVIEW
CongBao Kang, Thomas H Keller, Dahai Luo
The recent outbreak of Zika virus (ZIKV) infection has caused global concern due to its link to severe damage to the brain development of foetuses and neuronal complications in adult patients. A worldwide research effort has been undertaken to identify effective and safe treatment and vaccination options. Among the proposed viral and host components, the viral NS2B-NS3 protease represents an attractive drug target due to its essential role in the virus life cycle. Here, we outline recent progress in studies on the Zika protease...
August 5, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28769893/imported-zika-virus-in-a-european-city-how-to-prevent-local-transmission
#8
Joan-Pau Millet, Tomàs Montalvo, Ruben Bueno-Marí, Arancha Romero-Tamarit, Albert Prats-Uribe, Lidia Fernández, Esteve Camprubí, Lucía Del Baño, Victor Peracho, Jordi Figuerola, Elena Sulleiro, Miguel J Martínez, Joan A Caylà
Background: On February 1st 2016 the WHO declared the Zika Virus (ZIKV) infection a worldwide public health emergency because of its rapid expansion and severe complications, such as Guillain-Barré Syndrome or microcephaly in newborn. The huge amount of people traveling to endemic areas and the presence of Aedes albopictus in Barcelona increase the risk of autochtonous transmission. The objective of this study was to describe the first ZIKV cases diagnosed in our city and to analyze the surveillance, prevention, and control measures implemented to avoid autochthonous transmission...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28768876/monoclonal-antibodies-against-zika-virus-therapeutics-and-their-implications-for-vaccine-design
#9
Qihui Wang, Jinghua Yan, George Fu Gao
Zika virus (ZIKV) has caused global concern due to its association with neurological complications in newborns and adults. Although no approved vaccines or antivirals against ZIKV infection to date, hundreds of monoclonal antibodies (MAbs) have been developed in a short period. Here, we first present a complete picture of the ZIKV MAbs and then focus on the neutralizing mechanisms and immune hot spot uncovered through structural studies, which provide insight for therapeutics and vaccine design.
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28765371/zika-plasma-viral-dynamics-in-nonhuman-primates-provides-insights-into-early-infection-and-antiviral-strategies
#10
Katharine Best, Jeremie Guedj, Vincent Madelain, Xavier de Lamballerie, So-Yon Lim, Christa E Osuna, James B Whitney, Alan S Perelson
The recent outbreak of Zika virus (ZIKV) has been associated with fetal abnormalities and neurological complications, prompting global concern. Here we present a mathematical analysis of the within-host dynamics of plasma ZIKV burden in a nonhuman primate model, allowing for characterization of the growth and clearance of ZIKV within individual macaques. We estimate that the eclipse phase for ZIKV, the time between cell infection and viral production, is most likely short (∼4 h), the median within-host basic reproductive number R0 is 10...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28747174/knowledge-and-perceptions-about-zika-virus-in-a-middle-east-country
#11
Sohaila Cheema, Patrick Maisonneuve, Ingmar Weber, Luis Fernandez-Luque, Amit Abraham, Hekmat Alrouh, Javaid Sheikh, Albert B Lowenfels, Ravinder Mamtani
BACKGROUND: Zika virus, an emerging serious infectious disease, is a threat to persons living or travelling to regions where it is currently endemic, and also to contacts of infected individuals. The aim of this study was to assess knowledge about this new public health threat to persons residing in a Middle Eastern country. METHODS: We conducted a survey at several international universities in Qatar to assess knowledge and awareness about this disease. An adapted version of the survey was also conducted using online channels from Qatar...
July 26, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28740150/identification-of-putative-unique-immunogenic-zikv-and-denv1-4-peptides-for-diagnostic-cellular-based-tests
#12
Aaron L Oom, Davey Smith, Kevan Akrami
Since the re-emergence of Zika virus in 2014 and subsequent association with microcephaly, much work has focused on the development of a vaccine to halt its spread throughout the world. The mosquito vector that transmits this virus is widespread and responsible for the spread of other arboviridae including Dengue. Current diagnostic methods rely on serologic testing that are complicated by cross reactivity and therefore unable to distinguish Zika from Dengue infection in the absence of virus isolation. We performed an in silico analysis to identify potential epitopes that may stimulate a unique T-lymphocyte response to distinguish prior infection with Zika or Dengue...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738211/the-immunopathology-of-dengue-and-zika-virus-infections
#13
REVIEW
Abigail Culshaw, Juthathip Mongkolsapaya, Gavin R Screaton
A large proportion of the world's population live in areas with dengue virus (DENV) transmission resulting in tens of millions of symptomatic dengue cases each year. Serious complications following DENV infection occur more frequently in those suffering from a second or subsequent infection implicating virus-specific immunity as having a role in pathogenesis. In recent years outbreaks of the related Zika virus (ZIKV) have been associated with birth defects and neurological complications. As DENV and ZIKV share a viral vector sequential infections can occur...
July 21, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28736678/rapid-assessment-zika-virus-knowledge-among-clinical-specialists-in-singapore-a-cross-sectional-survey
#14
Chee F Yung, Clarence C Tam, Victor S Rajadurai, Jerry Ky Chan, Mabel Sf Low, Yong H Ng, Koh C Thoon, Lay K Tan
INTRODUCTION: We report the results of a rapid assessment of Zika virus awareness among key clinical specialties in Singapore. METHODS: Between June 6 and June 19, 2016 we conducted an online survey of doctors working in obstetrics and gynaecology, neonatology and paediatrics in Singapore. The survey included 15 multiple choice questions to measure respondents' knowledge of Zika virus in four domains covering clinical and public health. RESULTS: A total of 110 survey responses (15% response rate) were obtained, 82% of respondents worked in the public sector...
May 3, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28736217/high-content-screening-in-hpsc-neural-progenitors-identifies-drug-candidates-that-inhibit-zika-virus-infection-in-fetal-like-organoids-and-adult-brain
#15
Ting Zhou, Lei Tan, Gustav Y Cederquist, Yujie Fan, Brigham J Hartley, Suranjit Mukherjee, Mark Tomishima, Kristen J Brennand, Qisheng Zhang, Robert E Schwartz, Todd Evans, Lorenz Studer, Shuibing Chen
Zika virus (ZIKV) infects fetal and adult human brain and is associated with serious neurological complications. To date, no therapeutic treatment is available to treat ZIKV-infected patients. We performed a high-content chemical screen using human pluripotent stem cell-derived cortical neural progenitor cells (hNPCs) and found that hippeastrine hydrobromide (HH) and amodiaquine dihydrochloride dihydrate (AQ) can inhibit ZIKV infection in hNPCs. Further validation showed that HH also rescues ZIKV-induced growth and differentiation defects in hNPCs and human fetal-like forebrain organoids...
August 3, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28728607/zika-virus-transmission-to-mouse-ear-by-mosquito-bite-a-laboratory-model-that-replicates-the-natural-transmission-process
#16
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/28716913/antibody-based-assay-discriminates-zika-virus-infection-from-other-flaviviruses
#17
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...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28712942/structure-based-discovery-of-clinically-approved-drugs-as-zika-virus-ns2b-ns3-protease-inhibitors-that-potently-inhibit-zika-virus-infection-in%C3%A2-vitro-and-in%C3%A2-vivo
#18
Shuofeng Yuan, Jasper Fuk-Woo Chan, Helena den-Haan, Kenn Ka-Heng Chik, Anna Jinxia Zhang, Chris Chung-Sing Chan, Vincent Kwok-Man Poon, Cyril Chik-Yan Yip, Winger Wing-Nga Mak, Zheng Zhu, Zijiao Zou, Kah-Meng Tee, Jian-Piao Cai, Kwok-Hung Chan, Jorge de la Peña, Horacio Pérez-Sánchez, José Pedro Cerón-Carrasco, Kwok-Yung Yuen
Zika virus (ZIKV) infection may be associated with severe complications in fetuses and adults, but treatment options are limited. We performed an in silico structure-based screening of a large chemical library to identify potential ZIKV NS2B-NS3 protease inhibitors. Clinically approved drugs belonging to different drug classes were selected among the 100 primary hit compounds with the highest predicted binding affinities to ZIKV NS2B-NS3-protease for validation studies. ZIKV NS2B-NS3 protease inhibitory activity was validated in most of the selected drugs and in vitro anti-ZIKV activity was identified in two of them (novobiocin and lopinavir-ritonavir)...
July 14, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28702470/pericarditis-associated-with-acute-zika-virus-infection-in-a-returning-traveler
#19
Jesse J Waggoner, Nadine Rouphael, Yongxian Xu, Muktha Natrajan, Lilin Lai, Shital M Patel, Rebeca D Levit, Srilatha Edupuganti, Mark J Mulligan
Despite the widespread outbreak, few cases of Zika virus associated with cardiac manifestations have been described. We present a case of pericarditis in the setting of an acute, symptomatic Zika virus infection in a traveler returning from St. Thomas. Clinicians should be alert for this potential complication of Zika virus infection.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28696532/unmet-contraceptive-needs-in-rural-communities-in-the-dominican-republic-during-an-international-zika-virus-outbreak
#20
Rebecca Shaw, Michaela Simmons, Corrine Nelson, Brooke Bachelor, Shant Adamian, Ana Frausto
Zika virus infection during pregnancy is linked with adverse pregnancy and birth outcomes.(1,2) Therefore, women and their partners need education about the complications of Zika virus and reliable contraception in the context of this global health concern. This article is protected by copyright. All rights reserved.
July 11, 2017: International Journal of Gynaecology and Obstetrics
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