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Zika infections and complications

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https://www.readbyqxmd.com/read/28916522/viral-infection-sensitizes-human-fetal-membranes-to-bacterial-lipopolysaccharide-by-mertk-inhibition-and-inflammasome-activation
#1
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...
September 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
#2
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
#3
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
https://www.readbyqxmd.com/read/28878777/zika-virus-promotes-neuronal-cell-death-in-a-non-cell-autonomous-manner-by-triggering-the-release-of-neurotoxic-factors
#4
Isabella G Olmo, Toniana G Carvalho, Vivian V Costa, Juliana Alves-Silva, Carolina Z Ferrari, Tatiane C Izidoro-Toledo, Juliana F da Silva, Antonio L Teixeira, Danielle G Souza, Joao T Marques, Mauro M Teixeira, Luciene B Vieira, Fabiola M Ribeiro
Zika virus (ZIKV) has recently caused a worldwide outbreak of infections associated with severe neurological complications, including microcephaly in infants born from infected mothers. ZIKV exhibits high neurotropism and promotes neuroinflammation and neuronal cell death. We have recently demonstrated that N-methyl-d-aspartate receptor (NMDAR) blockade by memantine prevents ZIKV-induced neuronal cell death. Here, we show that ZIKV induces apoptosis in a non-cell autonomous manner, triggering cell death of uninfected neurons by releasing cytotoxic factors...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28870338/alternate-paradigms-on-zika-virus-related-complications-an-analytical-review
#5
REVIEW
Baburajan Radha, Gnanaraj Muniraj
The proportion of the reported cases of Zika virus (ZIKV) infection reached the status of a pandemic. Numerous studies are being conducted on the isolation of ZIKV strains from various epidemics, diagnosis of the infections, various animal models and cell culture designs to study the pathogenesis of ZIKV in the attempts to find an effective ZIKV vaccine. This review focuses upon the 'Off-Spectrum' body of studies which analyses the epidemiology, pathogenesis and other attributes of ZIKV in the light of various dissident hypotheses...
July 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28856072/association-of-zika-virus-with-myocarditis-heart-failure-and-arrhythmias-a-literature-review
#6
REVIEW
Abdul M Minhas, Asra Nayab, Shobana Iyer, Mehek Narmeen, Kaneez Fatima, Muhammad S Khan, Jonathan Constantin
As the concerns regarding Zika virus (ZIKV) are mostly of neurological disorders, especially in neonates and infants, other possible threats of the virus may have been overlooked. Our study focuses on the potential threat that ZIKV may pose to the heart like that of similar arboviral diseases. We conducted a literature search of multiple terms in March 2017 using the search engines, PubMed, Embase, and SCOPUS. Articles were then reviewed by two independent reviewers, adhering strictly to our review criteria...
June 27, 2017: Curēus
https://www.readbyqxmd.com/read/28852878/compensating-for-cross-reactions-using-avidity-and-computation-in-a-suspension-multiplex-immunoassay-for-serotyping-of-zika-versus-other-flavivirus-infections
#7
Bengt Rönnberg, Åke Gustafsson, Olli Vapalahti, Petra Emmerich, Åke Lundkvist, Jonas Schmidt-Chanasit, Jonas Blomberg
The recent spread of Zika virus (ZIKV) in the Americas and Asia necessitates an increased preparedness for improved maternal and perinatal health and blood safety. However, serological cross-reactions, especially to Dengue virus (DENV), complicate ZIKV antibody serodiagnosis. A novel "pan-Flavi" suspension multiplex immunoassay (PFSMIA) using 25 antigens, whole virus (WV), non-structural protein 1 (NS1), and envelope (E) proteins, from 7 zoonotic flaviviruses for specific detection of ZIKV and DENV IgM and IgG was developed...
August 29, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28838147/specific-biomarkers-associated-with-neurological-complications-and-congenital-central-nervous-system-abnormalities-from-zika-virus-infected-patients-in-brazil
#8
Yiu-Wing Kam, Juliana Almeida Leite, Fok-Moon Lum, Jeslin J L Tan, Bernett Lee, Carla C Judice, Daniel Augusto de Toledo Teixeira, Robert Andreata-Santos, Marco A Vinolo, Rodrigo Angerami, Mariangela Ribeiro Resende, Andre Ricardo Ribas Freitas, Eliana Amaral, Renato Passini Junior, Maria Laura Costa, José Paulo Guida, Clarice Weis Arns, Luis Carlos S Ferreira, Laurent Rénia, Jose Luiz Proença-Modena, Lisa F P Ng, Fabio T M Costa
Background: Zika virus (ZIKV) infections have been linked to different levels of clinical outcomes, ranging from mild rash and fever to severe neurological complications and congenital malformations. Methods: We investigated the clinical and immunological response, focusing on the immune mediators profile in 95 acute ZIKV-infected adult patients from Campinas, Brazil. These patients included 6 pregnant women who later delivered during the course of this study. Clinical observations were recorded during hospitalization...
July 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28835502/cd8-t-cell-immune-response-in-immunocompetent-mice-during-zika-virus-infection
#9
Huarong Huang, Shihua Li, Yongli Zhang, Xiaojuan Han, Baoqian Jia, Hongtao Liu, Dandan Liu, Shuguang Tan, Qihui Wang, Yuhai Bi, William J Liu, Baidong Hou, George Fu Gao, Fuping Zhang
Zika virus (ZIKV) infection cause neurologic complications, including Guillain-Barré syndrome (GBS) in adults and central nerve system (CNS) abnormalities in fetuses. We investigated the immune response, especially CD8(+) T cell response in C57BL/6 (B6) wild type (WT) mouse during ZIKV infection. We found that robust CD8(+) T cell response was elicited, MHC-I restricted CD8(+) T cell epitopes were identified and a tetramer that recognized ZIKV specific CD8(+) T cells was developed. Finally, virus specific memory CD8(+) T cells were generated in these mice...
August 23, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28827581/asian-zika-virus-strains-target-cd14-blood-monocytes-and-induce-m2-skewed-immunosuppression-during-pregnancy
#10
Suan-Sin Foo, Weiqiang Chen, Yen Chan, James W Bowman, Lin-Chun Chang, Younho Choi, Ji Seung Yoo, Jianning Ge, Genhong Cheng, Alexandre Bonnin, Karin Nielsen-Saines, Patrícia Brasil, Jae U Jung
Blood CD14(+) monocytes are frontline immunomodulators categorized into classical, intermediate or non-classical subsets, and subsequently differentiated into M1 pro- or M2 anti-inflammatory macrophages on stimulation. Although the Zika virus (ZIKV) rapidly establishes viraemia, the target cells and immune responses, particularly during pregnancy, remain elusive. Furthermore, it is unknown whether African- and Asian-lineage ZIKV have different phenotypic impacts on host immune responses. Using human blood infection, we identified CD14(+) monocytes as the primary target for African- or Asian-lineage ZIKV infection...
August 21, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28815211/phenotypic-differences-between-asian-and-african-lineage-zika-viruses-in-human-neural-progenitor-cells
#11
Fatih Anfasa, Jurre Y Siegers, Mark van der Kroeg, Noreen Mumtaz, V Stalin Raj, Femke M S de Vrij, W Widagdo, Gülsah Gabriel, Sara Salinas, Yannick Simonin, Chantal Reusken, Steven A Kushner, Marion P G Koopmans, Bart Haagmans, Byron E E Martina, Debby van Riel
Recent Zika virus (ZIKV) infections have been associated with a range of neurological complications, in particular congenital microcephaly. Human neural progenitor cells (hNPCs) are thought to play an important role in the pathogenesis of microcephaly, and experimental ZIKV infection of hNPCs has been shown to induce cell death. However, the infection efficiency and rate of cell death have varied between studies, which might be related to intrinsic differences between African and Asian lineage ZIKV strains...
July 2017: MSphere
https://www.readbyqxmd.com/read/28814522/characterization-of-cis-acting-rna-elements-of-zika-virus-by-using-a-self-splicing-ribozyme-dependent-infectious-clone
#12
Zhong-Yu Liu, Jiu-Yang Yu, Xing-Yao Huang, Hang Fan, Xiao-Feng Li, Yong-Qiang Deng, Xue Ji, Meng-Li Cheng, Qing Ye, Hui Zhao, Jian-Feng Han, Xiao-Ping An, Tao Jiang, Bo Zhang, Yi-Gang Tong, Cheng-Feng Qin
Zika virus (ZIKV) has caused significant outbreaks and epidemics in the Americas recently, raising global concern due to its ability to cause microcephaly and other neurological complications. A stable and efficient infectious clone of ZIKV is urgently needed. However, the instability and toxicity of flavivirus cDNA clones in E. coli hosts has hindered the development of ZIKV infectious clones. Herein, using a novel self-splicing ribozyme-based strategy, we have generated a stable infectious cDNA clone of a contemporary ZIKV strain imported from Venezuela to China in 2016...
August 16, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28806562/zika-virus-induced-neurological-critical-illness-in-latin-america-severe-guillain-barre-syndrome-and-encephalitis
#13
Ugarte Ubiergo Sebastián, Arenas Villamizar Angel Ricardo, 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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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