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https://www.readbyqxmd.com/read/28329257/lessons-learned-at-the-epicenter-of-brazil-s-congenital-zika-epidemic-evidence-from-87-confirmed-cases
#1
Jucille do Amaral Meneses, Ana Catarina Ishigami, Luisa Medeiros de Mello, Luciano Lira de Albuquerque, Carlos Alexandre Antunes de Brito, Marli Tenório Cordeiro, Lindomar José Pena
Congenital Zika virus infection has stimulated great international concern. A prospective case series of 87 infants with laboratory-confirmed congenital Zika syndrome (CZS) at the epicenter of the Brazilian Zika epidemic in Pernambuco state is presented. Mothers were interviewed for symptoms of possible Zika virus (ZIKV) infection during pregnancy and fetal ultrasounds were obtained. Infant cerebrospinal fluid (CSF) samples were tested for ZIKV specific antibodies and sera were screened for other congenital infections...
February 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328129/the-phenotypic-spectrum-of-congenital-zika-syndrome
#2
Miguel Del Campo, Ian M L Feitosa, Erlane M Ribeiro, Dafne D G Horovitz, André L S Pessoa, Giovanny V A França, Alfredo García-Alix, Maria J R Doriqui, Hector Y C Wanderley, Maria V T Sanseverino, João I C F Neri, João M Pina-Neto, Emerson S Santos, Islane Verçosa, Mirlene C S P Cernach, Paula F V Medeiros, Saile C Kerbage, André A Silva, Vanessa van der Linden, Celina M T Martelli, Marli T Cordeiro, Rafael Dhalia, Fernanda S L Vianna, Cesar G Victora, Denise P Cavalcanti, Lavinia Schuler-Faccini
In October 2015, Zika virus (ZIKV) outbreak the Brazilian Ministry of Health (MoH). In response, the Brazilian Society of Medical Genetics established a task force (SBGM-ZETF) to study the phenotype of infants born with microcephaly due to ZIKV congenital infection and delineate the phenotypic spectrum of this newly recognized teratogen. This study was based on the clinical evaluation and neuroimaging of 83 infants born during the period from July, 2015 to March, 2016 and registered by the SBGM-ZETF. All 83 infants had significant findings on neuroimaging consistent with ZIKV congenital infection and 12 had confirmed ZIKV IgM in CSF...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28327482/microcephaly-not-a-reliable-indicator-of-congenital-zika-virus-syndrome-in-infants
#3
Reeta S Mani
No abstract text is available yet for this article.
November 2016: National Medical Journal of India
https://www.readbyqxmd.com/read/28320497/laboratory-evaluation-of-infants-with-possible-congenital-zika-virus-infection
#4
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/28319995/clinical-trials-of-therapeutics-for-the-prevention-of-congenital-zika-virus-disease-challenges-and-potential-solutions
#5
Alex P Salam, Amanda Rojek, Jake Dunning, Peter W Horby
Zika virus (ZIKV) infection in pregnancy is associated with adverse fetal outcomes, such as microcephaly and other congenital malformations. No therapeutic options are available to pregnant women with ZIKV infection to prevent these effects. Drug trials in pregnancy raise several scientific, ethical, and logistical challenges, which are compounded further in ZIKV because of limited knowledge of the disease pathophysiology and a product development pipeline in its infancy. We evaluate the major challenges in choosing therapeutics to prevent congenital ZIKV disease and conducting clinical trials of these treatments, with a focus on preventing congenital central nervous system malformations...
March 21, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28319244/congenital-zika-virus-infection-beyond-neonatal-microcephaly-reply
#6
Adriana Suely de Oliveira Melo, Leila Chimelli, Amilcar Tanuri
No abstract text is available yet for this article.
March 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28319237/congenital-zika-virus-infection-beyond-neonatal-microcephaly
#7
Marcio Leyser, Osvaldo J M Nascimento
No abstract text is available yet for this article.
March 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28318966/structural-biology-of-the-zika-virus
#8
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/28318141/zika-virus-induced-cellular-remodeling
#9
Evan D Rossignol, Kristen N Peters, John H Connor, Esther Bullitt
Zika virus (ZIKV) has been associated with morbidities such as Guillain-Barré, infant microcephaly, and ocular disease. The spread of this positive-sense, single-stranded RNA virus and its growing public health threat underscore gaps in our understanding of basic ZIKV virology. To advance knowledge of the virus replication cycle within mammalian cells, we use serial section three-dimensional electron tomography to demonstrate the widespread remodeling of intracellular membranes upon infection with ZIKV. We report extensive structural rearrangements of the endoplasmic reticulum and reveal stages of the ZIKV viral replication cycle...
March 20, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28316896/vector-competence-of-anopheles-and-culex-mosquitoes-for-zika-virus
#10
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/28315476/comparative-analysis-of-protein-evolution-in-the-genome-of-pre-epidemic-and-epidemic-zika-virus
#11
Arunachalam Ramaiah, Lei Dai, Deisy Contreras, Sanjeev Sinha, Ren Sun, Vaithilingaraja Arumugaswami
Zika virus (ZIKV) causes microcephaly in congenital infection, neurological disorders, and poor pregnancy outcome and no vaccine is available for use in humans or approved. Although ZIKV was first discovered in 1947, the exact mechanism of virus replication and pathogenesis remains unknown. Recent outbreaks of Zika virus in the Americas clearly suggest a human-mosquito cycle or urban cycle of transmission. Understanding the conserved and adaptive features in the evolution of ZIKV genome will provide a hint on the mechanism of ZIKV adaptation to a new cycle of transmission...
March 14, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28314593/25-hydroxycholesterol-protects-host-against-zika-virus-infection-and-its-associated-microcephaly-in-a-mouse-model
#12
Chunfeng Li, Yong-Qiang Deng, Shuo Wang, Feng Ma, Roghiyh Aliyari, Xing-Yao Huang, Na-Na Zhang, Momoko Watanabe, Hao-Long Dong, Ping Liu, Xiao-Feng Li, Qing Ye, Min Tian, Shuai Hong, Junwan Fan, Hui Zhao, Lili Li, Neda Vishlaghi, Jessie E Buth, Connie Au, Ying Liu, Ning Lu, Peishuang Du, F Xiao-Feng Qin, Bo Zhang, Danyang Gong, Xinghong Dai, Ren Sun, Bennett G Novitch, Zhiheng Xu, Cheng-Feng Qin, Genhong Cheng
Zika virus (ZIKV) has become a public health threat due to its global transmission and link to severe congenital disorders. The host immune responses to ZIKV infection have not been fully elucidated, and effective therapeutics are not currently available. Herein, we demonstrated that cholesterol-25-hydroxylase (CH25H) was induced in response to ZIKV infection and that its enzymatic product, 25-hydroxycholesterol (25HC), was a critical mediator of host protection against ZIKV. Synthetic 25HC addition inhibited ZIKV infection in vitro by blocking viral entry, and treatment with 25HC reduced viremia and conferred protection against ZIKV in mice and rhesus macaques...
March 21, 2017: Immunity
https://www.readbyqxmd.com/read/28302630/prevalence-of-microcephaly-in-eight-south-eastern-and-midwestern-brazilian-neonatal-intensive-care-units-2011-2015
#13
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/28300075/a-human-antibody-against-zika-virus-crosslinks-the-e-protein-to-prevent-infection
#14
S Saif Hasan, Andrew Miller, Gopal Sapparapu, Estefania Fernandez, Thomas Klose, Feng Long, Andrei Fokine, Jason C Porta, Wen Jiang, Michael S Diamond, James E Crowe, Richard J Kuhn, Michael G Rossmann
The recent Zika virus (ZIKV) epidemic has been linked to unusual and severe clinical manifestations including microcephaly in fetuses of infected pregnant women and Guillian-Barré syndrome in adults. Neutralizing antibodies present a possible therapeutic approach to prevent and control ZIKV infection. Here we present a 6.2 Å resolution three-dimensional cryo-electron microscopy (cryoEM) structure of an infectious ZIKV (strain H/PF/2013, French Polynesia) in complex with the Fab fragment of a highly therapeutic and neutralizing human monoclonal antibody, ZIKV-117...
March 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28293228/prevention-and-control-strategies-to-counter-zika-epidemic
#15
REVIEW
Irfan A Rather, Sanjay Kumar, Vivek K Bajpai, Jeongheui Lim, Yong-Ha Park
ZIKA virus (ZIKA) has now become a global phenomenon. Since 2007, evidence of ZIKA transmission has been reported over 72 countries and territories. The transmission of ZIKA has made World Health Organization to categorize the situation under the ambit of a health emergency. This situation is serious because there appears to be a highly tangible link between infection during pregnancy and the occurrence of microcephaly and Guillain-Barré syndrome. In the context of this emergency situation, this review article intends to discuss the prevention and control strategies such as avoiding travel to infected area, being careful from mosquito bites, take precautions to reduce the risk of sexual transmission, and seek medical care for any acute illness with rash or fever...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28292840/using-brain-organoids-to-understand-zika-virus-induced-microcephaly
#16
Xuyu Qian, Ha Nam Nguyen, Fadi Jacob, Hongjun Song, Guo-Li Ming
Technologies to differentiate human pluripotent stem cells into three-dimensional organized structures that resemble in vivo organs are pushing the frontiers of human disease modeling and drug development. In response to the global health emergency posed by the Zika virus (ZIKV) outbreak, brain organoids engineered to mimic the developing human fetal brain have been employed to model ZIKV-induced microcephaly. Here, we discuss the advantages of brain organoids over other model systems to study development and highlight recent advances in understanding ZIKV pathophysiology and its underlying pathogenesis mechanisms...
March 15, 2017: Development
https://www.readbyqxmd.com/read/28285789/zika-virus-history-epidemiology-transmission-and-clinical-presentation
#17
REVIEW
Byung-Hak Song, Sang-Im Yun, Michael Woolley, Young-Min Lee
Zika virus (ZIKV), a mosquito-borne positive-stranded RNA virus of the family Flaviviridae (genus Flavivirus), is now causing an unprecedented large-scale outbreak in the Americas. Historically, ZIKV spread eastward from equatorial Africa and Asia to the Pacific Islands during the late 2000s to early 2010s, invaded the Caribbean and Central and South America in 2015, and reached North America in 2016. Although ZIKV infection generally causes no symptoms or only a mild self-limiting illness, it has recently been linked to a rising number of severe neurological diseases, including microcephaly and Guillain-Barré syndrome...
March 3, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28283425/a-rapid-zika-diagnostic-assay-to-measure-neutralizing-antibodies-in-patients
#18
Chao Shan, Xuping Xie, Ping Ren, Michael J Loeffelholz, Yujiao Yang, Andrea Furuya, Alan P Dupuis, Laura D Kramer, Susan J Wong, Pei-Yong Shi
The potential association of microcephaly and other congenital abnormalities with Zika virus (ZIKV) infection during pregnancy underlines the critical need for a rapid and accurate diagnosis. Due to the short duration of ZIKV viremia in infected patients, a serologic assay that detects antibody responses to viral infection plays an essential role in diagnosing patient specimens. The current serologic diagnosis of ZIKV infection relies heavily on the labor-intensive Plaque Reduction Neutralization Test (PRNT) that requires more than one-week turnaround time and represents a major bottleneck for patient diagnosis...
March 4, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28278237/zika-virus-infection-of-rhesus-macaques-leads-to-viral-persistence-in-multiple-tissues
#19
Alec J Hirsch, Jessica L Smith, Nicole N Haese, Rebecca M Broeckel, Christopher J Parkins, Craig Kreklywich, Victor R DeFilippis, Michael Denton, Patricia P Smith, William B Messer, Lois M A Colgin, Rebecca M Ducore, Peta L Grigsby, Jon D Hennebold, Tonya Swanson, Alfred W Legasse, Michael K Axthelm, Rhonda MacAllister, Clayton A Wiley, Jay A Nelson, Daniel N Streblow
Zika virus (ZIKV), an emerging flavivirus, has recently spread explosively through the Western hemisphere. In addition to symptoms including fever, rash, arthralgia, and conjunctivitis, ZIKV infection of pregnant women can cause microcephaly and other developmental abnormalities in the fetus. We report herein the results of ZIKV infection of adult rhesus macaques. Following subcutaneous infection, animals developed transient plasma viremia and viruria from 1-7 days post infection (dpi) that was accompanied by the development of a rash, fever and conjunctivitis...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28277362/access-to-contraception-in-the-context-of-zika-health-system-challenges-and-responses
#20
Blair G Darney, Abigail R A Aiken, Stephanie Küng
Women in areas of the Americas with endemic Aedes mosquito populations are at risk for exposure to Zika virus, which can cause fetal brain abnormalities and associated congenital microcephaly. Individual health care providers may encounter health system barriers to providing evidence-based care. We focus on Mexico and the state of Texas to highlight the role of health system factors in contraceptive access in the context of Zika and highlight efforts in Puerto Rico as an example of initiatives to improve access to contraception...
March 6, 2017: Obstetrics and Gynecology
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