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https://www.readbyqxmd.com/read/28332092/the-spectrum-of-neuropathological-changes-associated-with-congenital-zika-virus-infection
#1
Leila Chimelli, Adriana S O Melo, Elyzabeth Avvad-Portari, Clayton A Wiley, Aline H S Camacho, Vania S Lopes, Heloisa N Machado, Cecilia V Andrade, Dione C A Dock, Maria Elisabeth Moreira, Fernanda Tovar-Moll, Patricia S Oliveira-Szejnfeld, Angela C G Carvalho, Odile N Ugarte, Alba G M Batista, Melania M R Amorim, Fabiana O Melo, Thales A Ferreira, Jacqueline R L Marinho, Girlene S Azevedo, Jeime I B F Leal, Rodrigo F Madeiro da Costa, Stevens Rehen, Monica B Arruda, Rodrigo M Brindeiro, Rodrigo Delvechio, Renato S Aguiar, Amilcar Tanuri
A major concern associated with ZIKV infection is the increased incidence of microcephaly with frequent calcifications in infants born from infected mothers. To date, postmortem analysis of the central nervous system (CNS) in congenital infection is limited to individual reports or small series. We report a comprehensive neuropathological study in ten newborn babies infected with ZIKV during pregnancy, including the spinal cords and dorsal root ganglia (DRG), and also muscle, pituitaries, eye, systemic organs, and placentas...
March 22, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28320497/laboratory-evaluation-of-infants-with-possible-congenital-zika-virus-infection
#2
Susan Givens Bell
Our understanding of the effects of maternal Zika virus infection on the newborn continues to evolve. First discovered in 1947 in the Zika Forest in Uganda, the world became more aware of the virus in 2015, with reports of hundreds of cases of microcephaly in Brazilian newborns whose mothers reported symptoms related to Zika viral infection during pregnancy. This article reviews the current guidelines for laboratory evaluation of newborns with possible congenital Zika virus infection.
March 1, 2017: Neonatal Network: NN
https://www.readbyqxmd.com/read/28318966/structural-biology-of-the-zika-virus
#3
REVIEW
Yi Shi, George F Gao
Zika virus (ZIKV), a Flaviviridae family member transmitted to humans by mosquitoes, has emerged as a major health concern. ZIKV infections can cause serious neurological complications in adults, and infection in pregnant women can cause congenital malformations, including fetal and newborn microcephaly. In response to this emerging concern, the structural virology field was quick to explore the features of ZIKV. These efforts have provided significant insights into ZIKV pathogenesis, and have identified targets for drug design...
March 15, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/28318359/zika-virus-and-eye
#4
Rupesh Agrawal, Hnin Hnin Oo, Praveen Kumar Balne, Lisa Ng, Louis Tong, Yee Sin Leo
Zika virus (ZIKV), a mosquito-borne flavivirus, is the latest global health concern. Transmission is mainly via Aedes mosquitoes and the infection can be diagnosed on molecular or serologic testings. It typically causes a mild self-remitting illness of low-grade fever, maculopapular rash, and myalgia, but when severe, it is associated with neurological deficits and congenital structural defects. Ocular manifestations are usually mild like nonpurulent conjunctivitis in adults, though it may be linked to uveitis, maculopathy, and hypertensive iridocyclitis...
March 20, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28316896/vector-competence-of-anopheles-and-culex-mosquitoes-for-zika-virus
#5
Brittany L Dodson, Jason L Rasgon
Zika virus is a newly emergent mosquito-borne flavivirus that has caused recent large outbreaks in the new world, leading to dramatic increases in serious disease pathology including Guillain-Barre syndrome, newborn microcephaly, and infant brain damage. Although Aedes mosquitoes are thought to be the primary mosquito species driving infection, the virus has been isolated from dozens of mosquito species, including Culex and Anopheles species, and we lack a thorough understanding of which mosquito species to target for vector control...
2017: PeerJ
https://www.readbyqxmd.com/read/28302630/prevalence-of-microcephaly-in-eight-south-eastern-and-midwestern-brazilian-neonatal-intensive-care-units-2011-2015
#6
Maria Clara de Magalhães-Barbosa, Arnaldo Prata-Barbosa, Jaqueline Rodrigues Robaina, Carlos Eduardo Raymundo, Fernanda Lima-Setta, Antonio José Ledo Alves da Cunha
OBJECTIVE: To describe the prevalence of microcephaly in infants admitted to the neonatal intensive care units (NICUs) in eight private hospitals in south-eastern and midwestern Brazil, from 2011 to 2015. DESIGN: Observational, cross-sectional study in a cohort of neonates. SETTING: Eight private NICUs situated in the cities of Rio de Janeiro (RJ), São Paulo (SP) and Federal District of Brasilia (FDB). PATIENTS: Neonates up to 7 days of age and >23 weeks of gestational age...
March 16, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28289159/cutting-edge-innate-immune-augmenting-vesicular-stomatitis-virus-expressing-zika-virus-proteins-confers-protective-immunity
#7
Dillon Betancourt, Nina M G P de Queiroz, Tianli Xia, Jeonghyun Ahn, Glen N Barber
Zika virus (ZIKV) has become a serious public health concern because of its link to brain damage in developing human fetuses. Recombinant vesicular stomatitis virus (rVSV) was shown to be a highly effective and safe vector for the delivery of foreign immunogens for vaccine purposes. In this study, we generated rVSVs (wild-type and attenuated VSV with mutated matrix protein [VSVm] versions) that express either the full length ZIKV envelope protein (ZENV) alone or include the ZENV precursor to the membrane protein upstream of the envelope protein, and our rVSV-ZIKV constructs showed efficient immunogenicity in murine models...
March 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28271821/animal-models-of-zika-virus
#8
Michael P Bradley And Claude M Nagamine
Zika virus has garnered great attention over the last several years, as outbreaks of the disease have emerged throughout the Western Hemisphere. Until quite recently Zika virus was considered a fairly benign virus, with limited clinical severity in both people and animals. The size and scope of the outbreak in the Western Hemisphere has allowed for the identification of severe clinical disease that is associated with Zika virus infection, most notably microcephaly among newborns, and an association with Guillian-Barré syndrome in adults...
March 7, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28249158/ultrastructural-characterization-of-zika-virus-replication-factories
#9
Mirko Cortese, Sarah Goellner, Eliana Gisela Acosta, Christopher John Neufeldt, Olga Oleksiuk, Marko Lampe, Uta Haselmann, Charlotta Funaya, Nicole Schieber, Paolo Ronchi, Martin Schorb, Priit Pruunsild, Yannick Schwab, Laurent Chatel-Chaix, Alessia Ruggieri, Ralf Bartenschlager
A global concern has emerged with the pandemic spread of Zika virus (ZIKV) infections that can cause severe neurological symptoms in adults and newborns. ZIKV is a positive-strand RNA virus replicating in virus-induced membranous replication factories (RFs). Here we used various imaging techniques to investigate the ultrastructural details of ZIKV RFs and their relationship with host cell organelles. Analyses of human hepatic cells and neural progenitor cells infected with ZIKV revealed endoplasmic reticulum (ER) membrane invaginations containing pore-like openings toward the cytosol, reminiscent to RFs in Dengue virus-infected cells...
February 28, 2017: Cell Reports
https://www.readbyqxmd.com/read/28241773/zika-virus-infection-in-pregnancy-a-systematic-review-of-disease-course-and-complications
#10
REVIEW
Ezinne C Chibueze, Veronika Tirado, Katharina da Silva Lopes, Olukunmi O Balogun, Yo Takemoto, Toshiyuki Swa, Amarjargal Dagvadorj, Chie Nagata, Naho Morisaki, Clara Menendez, Erika Ota, Rintaro Mori, Olufemi T Oladapo
OBJECTIVES: To characterize maternal Zika virus (ZIKV) infection and complement the evidence base for the WHO interim guidance on pregnancy management in the context of ZIKV infection. METHODS: We searched the relevant database from inception until March 2016. Two review authors independently screened and assessed full texts of eligible reports and extracted data from relevant studies. The quality of studies was assessed using the Newcastle-Ottawa Scale (NOS) and the National Institute of Health (NIH) tool for observational studies and case series/reports, respectively...
February 28, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28239447/yeast-help-identify-cytopathic-factors-of-zika-virus
#11
Michael Bukrinsky
Accumulating evidence implicates Zika virus (ZIKV) in pathogenesis of microcephaly in newborns and Guillain-Barré syndrome in adults. However, it remains unclear which viral proteins are responsible for these effects and what are the underlying mechanisms of their pathogenic activity. A recent paper by Drs. Zhao and Gallo, and their colleagues at University of Maryland in Baltimore used fission yeast for genome-wide analysis of ZIKV proteins. They demonstrated cytopathogenic activity for seven ZIKV proteins, anaC, C, prM, M, E, NS2B and NS4A...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28203251/sulfated-glycans-and-related-digestive-enzymes-in-the-zika-virus-infectivity-potential-mechanisms-of-virus-host-interaction-and-perspectives-in-drug-discovery
#12
REVIEW
Vitor H Pomin
As broadly reported, there is an ongoing Zika virus (ZIKV) outbreak in countries of Latin America. Recent findings have demonstrated that ZIKV causes severe defects on the neural development in fetuses in utero and newborns. Very little is known about the molecular mechanisms involved in the ZIKV infectivity. Potential therapeutic agents are also under investigation. In this report, the possible mechanisms of action played by glycosaminoglycans (GAGs) displayed at the surface proteoglycans of host cells, and likely in charge of interactions with surface proteins of the ZIKV, are highlighted...
2017: Interdisciplinary Perspectives on Infectious Diseases
https://www.readbyqxmd.com/read/28182608/prevalence-and-clinical-attributes-of-congenital-microcephaly-new-york-2013-2015
#13
Krishika A Graham, Deborah J Fox, Achala Talati, Cristian Pantea, Laura Brady, Sondra L Carter, Eric Friedenberg, Neil M Vora, Marilyn L Browne, Christopher T Lee
Congenital Zika virus infection can cause microcephaly and other severe fetal neurological anomalies (1). To inform microcephaly surveillance efforts and assess ascertainment sources, the New York State Department of Health and the New York City Department of Health and Mental Hygiene sought to determine the prevalence of microcephaly in New York during 2013-2015, before known importation of Zika virus infections. Suspected newborn microcephaly diagnoses were identified from 1) reports submitted by birth hospitals in response to a request and 2) queries of a hospital administrative discharge database for newborn microcephaly diagnoses...
February 10, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28153732/zika-virus-induces-inflammasome-activation-in-the-glial-cell-line-u87-mg
#14
Paola Maura Tricarico, Ilaria Caracciolo, Sergio Crovella, Pierlanfranco D'Agaro
In the last years, neurological complications related to Zika virus (ZIKV) infection have emerged as an important threat to public health worldwide. ZIKV infection has been associated to neurological disorders such as congenital microcephaly in newborns and Guillain-Barré syndrome, myelopathy and encephalitis in adults. ZIKV is characterized by neurotropism and neurovirulence. Several studies have identified microglial nodules, gliosis, neuronal and glial cells degeneration and necrosis in the brain of ZIKV infected infants, suggesting that ZIKV could play a role in these neurological disorders through neuroinflammation and microglial activation...
January 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28153056/study-protocol-on-establishment-of-sentinel-sites-network-for-contraceptive-and-abortion-trends-needs-and-utilization-of-services-in-zika-virus-affected-countries
#15
Moazzam Ali, Kelsey Miller, Rachel Folz, Brooke Ronald Johnson, James Kiarie
BACKGROUND: ZIKV(Zika Virus) during pregnancy can result in many adverse events such as fetal deaths or newborns with congenital abnormalities including microcephaly and other neural irregularities. Due to these harmful outcomes of pregnancy associated with the Zika virus, we can expect to see a change in the type and scale of demand for family planning and safe abortion services in areas affected by the Zika virus. The monitoring and reporting capacities of the local health clinics in these areas could benefit from the introduction of infrastructural improvements necessary to establish a sentinel site network...
February 2, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28151488/zika-virus-protection-by-a-single-low-dose-nucleoside-modified-mrna-vaccination
#16
Norbert Pardi, Michael J Hogan, Rebecca S Pelc, Hiromi Muramatsu, Hanne Andersen, Christina R DeMaso, Kimberly A Dowd, Laura L Sutherland, Richard M Scearce, Robert Parks, Wendeline Wagner, Alex Granados, Jack Greenhouse, Michelle Walker, Elinor Willis, Jae-Sung Yu, Charles E McGee, Gregory D Sempowski, Barbara L Mui, Ying K Tam, Yan-Jang Huang, Dana Vanlandingham, Veronica M Holmes, Harikrishnan Balachandran, Sujata Sahu, Michelle Lifton, Stephen Higgs, Scott E Hensley, Thomas D Madden, Michael J Hope, Katalin Karikó, Sampa Santra, Barney S Graham, Mark G Lewis, Theodore C Pierson, Barton F Haynes, Drew Weissman
Zika virus (ZIKV) has recently emerged as a pandemic associated with severe neuropathology in newborns and adults. There are no ZIKV-specific treatments or preventatives. Therefore, the development of a safe and effective vaccine is a high priority. Messenger RNA (mRNA) has emerged as a versatile and highly effective platform to deliver vaccine antigens and therapeutic proteins. Here we demonstrate that a single low-dose intradermal immunization with lipid-nanoparticle-encapsulated nucleoside-modified mRNA (mRNA-LNP) encoding the pre-membrane and envelope glycoproteins of a strain from the ZIKV outbreak in 2013 elicited potent and durable neutralizing antibody responses in mice and non-human primates...
March 9, 2017: Nature
https://www.readbyqxmd.com/read/28134669/prenatal-imaging-findings-in-fetal-zika-virus-infection
#17
Edward Araujo Júnior, Francisco H C Carvalho, Gabriele Tonni, Heron Werner
PURPOSE OF REVIEW: The aim of this review is to report the most recent observations concerning intrauterine Zika virus (ZIKV) infection and associated neuroimaging. RECENT FINDINGS: ZIKV outbreak in Brazil in 2015 was associated with an impressive registration of cases of congenital microcephaly in women with symptoms suggestive of ZIKV infection. Clinical and laboratory testing for ZIKV and hypothetic etiopathogenetic mechanisms are described. Diagnostic tests on blood, urine and amniotic fluid should be performed in all mothers with symptoms suggestive of intrauterine ZIKV infection...
April 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28132835/recent-zika-virus-isolates-induce-premature-differentiation-of-neural-progenitors-in-human-brain-organoids
#18
Elke Gabriel, Anand Ramani, Ulrike Karow, Marco Gottardo, Karthick Natarajan, Li Ming Gooi, Gladiola Goranci-Buzhala, Oleg Krut, Franziska Peters, Milos Nikolic, Suvi Kuivanen, Essi Korhonen, Teemu Smura, Olli Vapalahti, Argyris Papantonis, Jonas Schmidt-Chanasit, Maria Riparbelli, Giuliano Callaini, Martin Krönke, Olaf Utermöhlen, Jay Gopalakrishnan
The recent Zika virus (ZIKV) epidemic is associated with microcephaly in newborns. Although the connection between ZIKV and neurodevelopmental defects is widely recognized, the underlying mechanisms are poorly understood. Here we show that two recently isolated strains of ZIKV, an American strain from an infected fetal brain (FB-GWUH-2016) and a closely-related Asian strain (H/PF/2013), productively infect human iPSC-derived brain organoids. Both of these strains readily target to and replicate in proliferating ventricular zone (VZ) apical progenitors...
March 2, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28123079/zika-virus-targeting-in-the-developing-brain
#19
Anthony N van den Pol, Guochao Mao, Yang Yang, Sara Ornaghi, John N Davis
Zika virus (ZIKV), a positive-sense RNA flavivirus, has attracted considerable attention recently for its potential to cause serious neurological problems, including microcephaly, cortical thinning, and blindness during early development. Recent findings suggest that ZIKV infection of the brain can occur not only during very early stages of development, but also in later fetal/early neonatal stages of maturation. Surprisingly, after peripheral inoculation of immunocompetent mice on the day of birth, the first cells targeted throughout the brain were isolated astrocytes...
February 22, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28120186/dengue-and-zika-viruses-lessons-learned-from-the-similarities-between-these-aedes-mosquito-vectored-arboviruses
#20
REVIEW
San Suwanmanee, Natthanej Luplertlop
The currently spreading arbovirus epidemic is having a severe impact on human health worldwide. The two most common flaviviruses, dengue virus (DENV) and Zika virus (ZIKV), are transmitted through the same viral vector, Aedes spp. mosquitoes. Since the discovery of DENV in 1943, this virus has been reported to cause around 390 million human infections per year, approximately 500,000 of which require hospitalization and over 20,000 of which are lethal. The present DENV epidemic is primarily concentrated in Southeast Asia...
February 2017: Journal of Microbiology / the Microbiological Society of Korea
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