Mild Zika infection in fetuses may cause brain abnormalities in young despite no symptoms

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(University of Saskatchewan) Using a relevant animal model (pigs), University of Saskatchewan researchers have shown that mild Zika virus infection in fetuses can cause abnormal brain development in apparently healthy young animals. The study, published Nov. 14, 2019 in PLOS Pathogens, provides new insights into the potential outcomes of Zika virus infection and could point to new prevention and treatment strategies to alleviate the long-term effects of Zika virus infection.

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Lu Lu

Recently, Zika virus (ZIKV) has attracted much attention in consideration of its association with severe neurological complications including fetal microcephaly. However, there are currently no prophylactic vaccines or therapeutic drugs approved for clinical treatments of ZIKV infection. To determine the potential anti-ZIKV inhibitors, we screened a library of clinical drugs with good safety profiles. Erythromycin estolate (Ery-Est), one of the macrolide antibiotics, was found to effectively inhibit ZIKV infection in different cell types and significantly protect A129 mice from ZIKV-associated neurological sign…

Source: VirusesCategory: Virology Authors: Tags: Article Source Type: research

Authors: Maniero VC, Rangel PSC, Coelho LMC, Silva CSB, Aguiar RS, Lamas CC, Cardozo SV
Abstract
A progressive increase in the circulation of arboviruses in tropical countries has been observed, accounting for 700,000 yearly deaths in the world. The main objective of this article was to identify the presence of Zika (ZIKV), dengue (DENV), and Chikungunya (CHIKV) viruses in immature stages of Aedes aegypti and Ae. albopictus. Household collections of immature phases of the vectors were carried out in the years 2015 and 2016. A total of 2902 dwellings were visited and the rate of infestation with larvae and pupae of …

(Baylor College of Medicine) Researchers have discovered that the Zika virus protein NS4A disrupts brain growth by hijacking a pathway that regulates the generation of new neurons.

(Integral Molecular) The NIH has awarded Integral Molecular a contract which will provide up to $5.5M over the next five years to define antibody responses to pathogenic viruses including Zika, Marburg and equine encephalitis viruses (EEV), aiding the discovery of vaccines and therapeutics against these currently untreatable and often lethal viruses.

(PLOS) Zika virus infection in the womb produces altered immune responses and sex-specific brain abnormalities in apparently healthy pig offspring, according to a study published Nov. 14 in the open-access journal PLOS Pathogens by Uladzimir Karniychuk of the University of Saskatchewan, and colleagues.

Publication date: 12 November 2019Source: Cell Reports, Volume 29, Issue 7Author(s): Laura R.H. Ahlers, Chasity E. Trammell, Grace F. Carrell, Sophie Mackinnon, Brandi K. Torrevillas, Clement Y. Chow, Shirley Luckhart, Alan G. GoodmanSummaryThe World Health Organization estimates that more than half of the world’s population is at risk for vector-borne diseases, including arboviruses. Because many arboviruses are mosquito borne, investigation of the insect immune response will help identify targets to reduce the spread of arboviruses. Here, we use a genetic screening approach to identify an insulin-like receptor as a…

Source: Cell ReportsCategory: Cytology Source Type: research

AbstractPuerto Rico was hit by two major hurricanes in September 2017 causing great devastation, losing over 90% of the power grid, wireless communication and access to potable water, and destroying many homes. Our research programs: Puerto Rico Testsite for Exploring Contamination Threats (PROTECT), Center for Research on Early Childhood Exposure and Development in Puerto Rico (CRECE), Zika in Infants and Pregnancy (ZIP), and Environmental Influences on Child Health Outcomes (ECHO) are ongoing observational cohort studies that have been investigating environmental risk factors for perinatal health outcomes among Puerto Ri…

Conclusions: Aedes albopictus is responsible for the current outbreaks. The spread of Aedes albopictus and Aedes japonicus increases the risk of the autochthonous transmission of these viruses. Although native species could contribute to their transmission, more studies are still needed to assess that risk.

Source: VirusesCategory: Virology Authors: Tags: Review Source Type: research

aria Rios

Viral isolation is desirable for many reasons, including development of diagnostic assays and reference materials, and for virology basic research. Zika virus (ZIKV) isolation from clinical samples is challenging, but isolates are known to infect various cell lines. Here, we evaluated suitability of Vero, C6/36 and JEG-3 as host cells, for direct isolation of ZIKV from human plasma. We also assessed the use of primary monocyte-derived macrophages (MDMs) culture to enhance ZIKV isolation from human plasma samples followed by virus expansion in Vero, C6/36 and JEG-3 cultures. Direct inoculation of cell lines wi…

Source: VirusesCategory: Virology Authors: Tags: Article Source Type: research

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