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zika microcephalie

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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/28719330/case-report-microcephaly-in-twins-due-to-the-zika-virus
#3
Victor S Santos, Sheila J G Oliveira, Ricardo Q Gurgel, Dorothy R R Lima, Cliomar A Dos Santos, Paulo R S Martins-Filho
Recent studies have demonstrated an association between congenital Zika virus (ZIKV) infection and microcephaly; however, to date, there have been no reports on the consequences of ZIKV infection on fetuses in twin pregnancies. Herein, we reported on the first case of a monochorionic diamniotic (MCDA) twin pregnancy having ZIKV-related microcephaly. Our findings suggested that, in an MCDA twin pregnancy, the ZIKV may cause infection in both fetuses, resulting in severe abnormalities in the central nervous system due to neural cell destruction and the disruption of the normal development processes of the brain...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719291/knowledge-and-prevention-practices-among-u-s-pregnant-immigrants-from-zika-virus-outbreak-areas
#4
Abbey B Berenson, Ha N Trinh, Jacqueline M Hirth, Fangjian Guo, Erika L Fuchs, Scott C Weaver
We administered an anonymous survey to assess knowledge, attitudes, and prevention practices related to the Zika virus among pregnant women residing in Texas. Multivariate logistic regression models controlling for age, race/ethnicity, education, and number of years in the United States assessed differences between women born in outbreak areas (N = 390) versus those born in the United States (N = 249). Results demonstrated that most women wanted more information on the Zika virus and desired to obtain it from their physician...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28715527/screening-criteria-for-ophthalmic-manifestations-of-congenital-zika-virus-infection
#5
Andrea A Zin, Irena Tsui, Julia Rossetto, Zilton Vasconcelos, Kristina Adachi, Stephanie Valderramos, Umme-Aiman Halai, Marcos Vinicius da Silva Pone, Sheila Moura Pone, Joel Carlos Barros Silveira Filho, Mitsue S Aibe, Ana Carolina C da Costa, Olivia A Zin, Rubens Belfort, Patricia Brasil, Karin Nielsen-Saines, Maria Elisabeth Lopes Moreira
Importance: Current guidelines recommend screening eye examinations for infants with microcephaly or laboratory-confirmed Zika virus infection but not for all infants potentially exposed to Zika virus in utero. Objective: To evaluate eye findings in a cohort of infants whose mothers had polymerase chain reaction-confirmed Zika virus infection during pregnancy. Design, Setting, and Participants: In this descriptive case series performed from January 2 through October 30, 2016, infants were examined from birth to 1 year of age by a multidisciplinary medical team, including a pediatric ophthalmologist, from Fernandes Figueira Institute, a Ministry of Health referral center for high-risk pregnancies and infectious diseases in children in Rio de Janeiro, Brazil...
July 17, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28712937/returning-ex-patriot-chinese-to-guangdong-china-increase-the-risk-for-local-transmission-of-zika-virus
#6
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/28710796/plant-produced-zika-virus-envelope-protein-elicits-neutralizing-immune-responses-that-correlate-with-protective-immunity-against-zika-virus-in-mice
#7
Ming Yang, Haiyan Sun, Huafang Lai, Jonathan Hurtado, Qiang Chen
The global Zika virus (ZIKV) outbreak and its link to fetal and newborn microcephaly and severe neurological complications in adults call for the urgent development of ZIKV vaccines. In response, we developed a subunit vaccine based on the ZIKV envelope (E) protein and investigated its immunogenicity in mice. Transient expression of ZIKV E (zE) resulted in its rapid accumulation in leaves of Nicotiana benthamiana plants. Biochemical analysis revealed that plant-produced ZIKV E (PzE) exhibited specific binding to a panel of monoclonal antibodies that recognize various zE conformational epitopes...
July 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28704657/dual-blades-the-role-of-musashi-1-in-zika-replication-and-microcephaly
#8
Robyn S Klein
Infection with Zika virus (ZIKV) during pregnancy may cause severe developmental defects in the human brain via unknown mechanisms. In a recent issue of Science, Chavali et al. (2017) identified a neural progenitor cell (NPC)-specific RNA binding protein that may underlie the high levels of ZIKV replication and apoptosis observed in these cells during congenital infections.
July 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28700665/solution-conformations-of-zika-ns2b-ns3pro-and-its-inhibition-by-natural-products-from-edible-plants
#9
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/28698215/paper-of-note-in-science357-6346
#10
Annalisa M VanHook
This week's article offers a possible explanation for how Zika virus causes microcephaly.
July 11, 2017: Science Signaling
https://www.readbyqxmd.com/read/28694387/inhibition-of-autophagy-limits-vertical-transmission-of-zika-virus-in-pregnant-mice
#11
Bin Cao, Lindsay A Parnell, Michael S Diamond, Indira U Mysorekar
Zika virus (ZIKV) infection during pregnancy leads to devastating fetal outcomes, including intrauterine growth restriction and microcephaly. Greater understanding of mechanisms underlying ZIKV maternal-fetal transmission is needed to develop new therapeutic interventions. Here, we define an important role for the autophagy pathway in ZIKV vertical transmission. ZIKV infection induced autophagic activity in human trophoblasts and pharmacological inhibition limited ZIKV infectivity. Furthermore, deficiency in an essential autophagy gene, Atg16l1, in mice limited ZIKV vertical transmission and placental and fetal damage and overall improved placental and fetal outcomes...
July 10, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28691657/a-relevant-in-vitro-human-model-for-the-study-of-zika-virus-antibody-dependent-enhancement
#12
Berlin Londono-Renteria, Andrea Troupin, Jenny C Cardenas, Alex Hall, Omar G Perez, Lucio Cardenas, Adam Hartstone-Rose, Scott B Halstead, Tonya M Colpitts
Zika virus (ZIKV) is a mosquito-borne flavivirus that has recently been responsible for a serious outbreak of disease in South and Central America. Infection with ZIKV has been associated with severe neurological symptoms and the development of microcephaly in unborn fetuses. Many of the regions involved in the current outbreak are known to be endemic for another flavivirus, dengue virus (DENV), which indicates that a large percentage of the population may have pre-existing DENV immunity. Thus, it is vital to investigate what impact pre-existing DENV immunity has on ZIKV infection...
July 8, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28688996/zika-virus-dynamics-when-does-sexual-transmission-matter
#13
Ondrej Maxian, Anna Neufeld, Emma J Talis, Lauren M Childs, Julie C Blackwood
The Zika virus (ZIKV) has captured worldwide attention with the ongoing epidemic in South America and its link to severe birth defects, most notably microcephaly. ZIKV is spread to humans through a combination of vector and sexual transmission, but the relative contribution of these transmission routes to the overall epidemic remains largely unknown. Furthermore, a disparity in the reported number of infections between males and females has been observed. We develop a mathematical model that describes the transmission dynamics of ZIKV to determine the processes driving the observed epidemic patterns...
June 29, 2017: Epidemics
https://www.readbyqxmd.com/read/28687969/impact-of-zika-virus-for-infertility-specialists-current-literature-guidelines-and-resources
#14
REVIEW
Jamie P Dubaut, Nelson I Agudelo Higuita, Alexander M Quaas
In the past 2 years, Zika virus has emerged from obscurity onto the world stage-traversing and transcending clinical specialties, basic science disciplines, and public health efforts. The spread of Zika virus has serious implications for the specialty of reproductive endocrinology and infertility. Our patients, practices, and labs-worldwide and specifically in the USA-have been impacted by this teratogenic, sexually transmitted, largely asymptomatic virus. While the World Health Organization's Public Emergency of International Concern designation has lapsed as major epidemics have subsided and understanding of risks is in part clarified, the acute and long-term threat to pregnant patients is not over...
July 7, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28686621/risk-of-bias-and-confounding-of-observational-studies-of-zika-virus-infection-a-scoping-review-of-research-protocols
#15
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/28684499/inherited-microcephaly-exposes-zika-culprit
#16
EDITORIAL
Caroline Ash
No abstract text is available yet for this article.
July 7, 2017: Science
https://www.readbyqxmd.com/read/28678053/raised-frequency-of-central-nervous-system-malformations-related-to-zika-virus-infection-in-two-birth-defects-surveillance-systems-in-bogot%C3%A3-and-cali-colombia
#17
Paula Hurtado-Villa, Angie K Puerto, Salomé Victoria, Gloria Gracia, Lesly Guasmayán, Patricia Arce, Gilberto Álvarez, Esperanza Blandón, Nubia Rengifo, Jorge A Holguín, Alexander Durán, Ignacio Zarante
Zika virus infection during pregnancy is now known to cause congenital microcephaly and severe brain defects. Colombia has been experiencing an epidemic wave of Zika infection, starting approximately in October 2015. Here we document the trends of microcephaly and severe CNS malformations in two major cities in Colombia from 2012 through 2016, tracking the epidemiologic curve from before through the major Zika epidemic so far. METHODS: The study included neural tube defects (anencephaly, spina bifida, encephalocele), holoprosencephaly, and hydrocephaly...
July 1, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28676560/congenital-microcephaly-in-quebec-baseline-prevalence-risk-factors-and-outcomes-in-a-large-cohort-of-neonates
#18
Nathalie Auger, Caroline Quach, Jessica Healy-Profitós, Anne-Marie Lowe, Laura Arbour
OBJECTIVE: We assessed baseline prevalence, risk factors and outcomes of microcephaly in a large population of neonates. DESIGN: Retrospective cohort study. SETTING: All hospitals in the province of Quebec, Canada. PARTICIPANTS: 794 microcephalic and 1 944 010 non-microcephalic infants born between 1989 and 2012. MAIN OUTCOME MEASURES: Baseline prevalence of microcephaly and occurrence of other congenital anomalies...
July 4, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28669037/in-vitro-study-of-zika-virus-infection-in-boar-semen
#19
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/28667332/viperin-is-an-important-host-restriction-factor-in-control-of-zika-virus-infection
#20
Kylie H Van der Hoek, Nicholas S Eyre, Byron Shue, Onruedee Khantisitthiporn, Kittirat Glab-Ampi, Jillian M Carr, Matthew J Gartner, Lachlan A Jolly, Paul Q Thomas, Fatwa Adikusuma, Tanja Jankovic-Karasoulos, Claire T Roberts, Karla J Helbig, Michael R Beard
Zika virus (ZIKV) infection has emerged as a global health threat and infection of pregnant women causes intrauterine growth restriction, spontaneous abortion and microcephaly in newborns. Here we show using biologically relevant cells of neural and placental origin that following ZIKV infection, there is attenuation of the cellular innate response characterised by reduced expression of IFN-β and associated interferon stimulated genes (ISGs). One such ISG is viperin that has well documented antiviral activity against a wide range of viruses...
June 30, 2017: Scientific Reports
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