scholarly journals A peptide-based viral inactivator inhibits Zika virus infection in pregnant mice and fetuses

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Yufeng Yu ◽  
Yong-Qiang Deng ◽  
Peng Zou ◽  
Qian Wang ◽  
Yanyan Dai ◽  
...  
Keyword(s):  
Virus Infection ◽  
Zika Virus ◽  
Zika Virus Infection ◽  
Pregnant Mice

scholarly journals Transfer of convalescent serum to pregnant mice prevents Zika virus infection and microcephaly in offspring

Cell Research ◽  
2016 ◽  
Vol 27 (1) ◽  
pp. 158-160 ◽  
Author(s):  
Shuo Wang ◽  
Shuai Hong ◽  
Yong-Qiang Deng ◽  
Qing Ye ◽  
Ling-Zhai Zhao ◽  
...  
Keyword(s):  
Virus Infection ◽  
Zika Virus ◽  
Zika Virus Infection ◽  
Pregnant Mice

scholarly journals Pregnancy alters innate immune responses to Zika virus infection in the genital tract

2019 ◽  
Author(s):  
Kelsey E. Lesteberg ◽  
Dana S. Fader ◽  
J. David Beckham
Keyword(s):  
Virus Infection ◽  
Immune Responses ◽  
Zika Virus ◽  
Immune Cell ◽  
Innate Immune ◽  
Innate Immune Cells ◽  
Innate Immune Responses ◽  
Zikv Infection ◽  
Zika Virus Infection ◽  
Pregnant Mice

AbstractRecent outbreaks of Zika virus (ZIKV) have been associated with birth defects, including microcephaly and neurological impairment. However, the mechanisms which confer increased susceptibility to ZIKV during pregnancy remain unclear. We hypothesized that poor outcomes from ZIKV infection during pregnancy are due in part to pregnancy-induced alteration of innate immune cell frequencies and cytokine expression. To examine the impact of pregnancy on innate immune responses, we inoculated pregnant and non-pregnant female C57BL/6 mice with 5×105 FFU of ZIKV intravaginally. Innate immune cell frequencies and cytokine expression were measured by flow cytometry at day 3 post infection. Compared to non-pregnant mice, pregnant mice exhibited higher frequencies of uterine macrophages (CD68+) and tolerogenic dendritic cells (CD11c+ CD103+ and CD11c+ CD11b+). Additionally, ZIKV-infected pregnant mice had lower frequencies of CD45+ IL-12+ and CD11b+ IL-12+ cells in the uterus and spleen. These data show that pregnancy results in an altered innate immune response to ZIKV infection in the genital tract of mice and that pregnancy-associated immune modulation may play an important role in the severity of acute ZIKV infection.ImportancePregnant females longer duration that viremia following infection with Zika virus but the mechanism of this is not established. Innate immune cellular responses are important for controlling virus infection and are important for development and maintenance of pregnancy. Thus, the acute immune response to Zika virus during pregnancy may be altered so that the pregnancy can be maintained. To examine this interaction, we utilized a mouse model of Zika virus infection during pregnancy using intravaginal inoculation. We found that following Zika virus infection, pregnant mice exhibited increased expression of tolerant or non-inflammatory dendritic cells. Additionally, we found that pregnant mice have significantly depressed ability to secrete the cytokine IL-12 from innate immune cells in the uterus and the spleen while maintaining MHCII expression. These findings show that pregnancy-induced changes in the innate immune cells are biased towards tolerance and can result in decreased antigen-dependent stimulation of immune responses.

scholarly journals Zika virus infection in immunocompetent pregnant mice causes fetal damage and placental pathology in the absence of fetal infection

2018 ◽  
Vol 14 (4) ◽  
pp. e1006994 ◽  
Author(s):  
Frank M. Szaba ◽  
Michael Tighe ◽  
Lawrence W. Kummer ◽  
Kathleen G. Lanzer ◽  
Jerrold M. Ward ◽  
...  
Keyword(s):  
Virus Infection ◽  
Zika Virus ◽  
Placental Pathology ◽  
Zika Virus Infection ◽  
Fetal Infection ◽  
Pregnant Mice

Congenital Zika Virus Infection Paradigm: What is in the Wardrobe? A Narrative Review

2019 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Mariam M. Mirambo ◽  
Lucas Matemba ◽  
Mtebe Majigo ◽  
Stephen E. Mshana
Keyword(s):  
Virus Infection ◽  
Neural Tube ◽  
Zika Virus ◽  
English Language ◽  
Case Reports ◽  
Case Series ◽  
Epidemiological Studies ◽  
Ocular Manifestations ◽  
Zika Virus Infection ◽  
N 93

Background: Zika virus infection during pregnancy has been recently associated with congenital microcephaly and other severe neural tube defects. However, the magnitude of confirmed cases and the scope of these anomalies have not been extensively documented. This review focuses on the magnitude of laboratory-confirmed congenital Zika virus cases among probable cases and describing the patterns of congenital anomalies allegedly caused by the Zika virus, information which will inform further research in this area. Methods: We conducted a literature search for English-language articles about congenital Zika virus infection using online electronic databases (PubMed/MEDLINE, POPLINE, Embase, Google Scholar, and Web of Knowledge). The search terms used were, “zika”, “pregnancy”, [year], “microcephaly”, “infants”, “children”, “neonates”, “foetuses”, “neural tube defect”, and “CNS manifestations” in different combinations. All articles reporting cases or case series between January 2015 and December 2016 were included. Data were entered into a Microsoft Excel database and analysed to obtain proportions of the confirmed cases and patterns of anomalies. Results: A total of 24 articles (11 case series, 9 case reports, and 4 others) were found to be eligible and included in this review. These articles reported 919 cases, with or without microcephaly, presumed to have congenital Zika virus infection. Of these cases, 884 (96.2%) had microcephaly. Of the 884 cases of microcephaly, 783 (88.6%) were tested for Zika virus infection, and 216 (27.6%; 95% confidence interval, 24.5% to 30.8%) were confirmed to be Zika virus-positive. In addition to microcephaly, other common abnormalities reported – out of 442 cases investigated – were calcifications of brain tissue (n=240, 54.3%), ventriculomegaly (n=93, 20.8%), cerebellar hypoplasia (n=52, 11.7%), and ocular manifestations (n=46, 10.4%). Conclusion: Based on the available literature, Zika virus infection during pregnancy might lead to a wide array of outcomes other than microcephaly. There is a need for more epidemiological studies in Zika-endemic areas, particularly in Africa, to ascertain the role of Zika virus in causing congenital neurological defects.

Congenital Zika Virus Infection Paradigm: What is in the Wardrobe? A Narrative Review

2019 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Mariam M. Mirambo ◽  
Lucas Matemba ◽  
Mtebe Majigo ◽  
Stephen E. Mshana
Keyword(s):  
Virus Infection ◽  
Neural Tube ◽  
Zika Virus ◽  
English Language ◽  
Case Reports ◽  
Case Series ◽  
Epidemiological Studies ◽  
Ocular Manifestations ◽  
Zika Virus Infection ◽  
N 93

Background: Zika virus infection during pregnancy has been recently associated with congenital microcephaly and other severe neural tube defects. However, the magnitude of confirmed cases and the scope of these anomalies have not been extensively documented. This review focuses on the magnitude of laboratory-confirmed congenital Zika virus cases among probable cases and describing the patterns of congenital anomalies allegedly caused by the Zika virus, information which will inform further research in this area. Methods: We conducted a literature search for English-language articles about congenital Zika virus infection using online electronic databases (PubMed/MEDLINE, POPLINE, Embase, Google Scholar, and Web of Knowledge). The search terms used were, “zika”, “pregnancy”, [year], “microcephaly”, “infants”, “children”, “neonates”, “foetuses”, “neural tube defect”, and “CNS manifestations” in different combinations. All articles reporting cases or case series between January 2015 and December 2016 were included. Data were entered into a Microsoft Excel database and analysed to obtain proportions of the confirmed cases and patterns of anomalies. Results: A total of 24 articles (11 case series, 9 case reports, and 4 others) were found to be eligible and included in this review. These articles reported 919 cases, with or without microcephaly, presumed to have congenital Zika virus infection. Of these cases, 884 (96.2%) had microcephaly. Of the 884 cases of microcephaly, 783 (88.6%) were tested for Zika virus infection, and 216 (27.6%; 95% confidence interval, 24.5% to 30.8%) were confirmed to be Zika virus-positive. In addition to microcephaly, other common abnormalities reported – out of 442 cases investigated – were calcifications of brain tissue (n=240, 54.3%), ventriculomegaly (n=93, 20.8%), cerebellar hypoplasia (n=52, 11.7%), and ocular manifestations (n=46, 10.4%). Conclusion: Based on the available literature, Zika virus infection during pregnancy might lead to a wide array of outcomes other than microcephaly. There is a need for more epidemiological studies in Zika-endemic areas, particularly in Africa, to ascertain the role of Zika virus in causing congenital neurological defects.

Spatial distribution of Zika virus infection in northeastern Colombia

2016 ◽  
Author(s):  
Alfonso J Rodriguez-Morales ◽  
Ubydul Haque ◽  
Jacob D Ball ◽  
Carlos Julian García-Loaiza ◽  
Maria Leonor Galindo-Marquez ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Virus Infection ◽  
Zika Virus ◽  
Zika Virus Infection
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