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1.
Texto & contexto enferm ; 29: e20180517, Jan.-Dec. 2020.
Artículo en Inglés | LILACS-Express | ID: biblio-1094554

RESUMEN

ABSTRACT Objective: to know how mothers affected by the Zika virus during pregnancy became aware on the diagnosis of Congenital Zika Virus Syndrome in their child and to understand the way in which the communication of the diagnosis was transmitted. Method: a qualitative approach study, with interpretative research, based on the Resilience, Stress, Adjustment and Family Adaptation Model. The research was conducted in a Specialized Rehabilitation Center in a city of Paraíba (Brazil), from June to November 2017, with 40 mothers of children with congenital Zika virus syndrome. The empirical material was produced from a semi-structured script developed by the researcher, related to the different phases and components of the adaptation and resilience process. The findings were submitted to content analysis. Results: two thematic categories were unveiled: The discovery of Congenital Zika Virus Syndrome: period of diagnosis and maternal expectations, and How to communicate the diagnosis: implications for the discovery of Congenital Zika Virus Syndrome. Conclusion: Communication of the diagnosis and professional conduct at the time of information play important roles in re-signifying the meaning of congenital malformation. The interaction established by the health professional and their posture are directly related to the satisfaction about the information received.


RESUMEN Objetivos: conocer de qué manera las madres afectadas por el virus del Zika se enteraron del diagnóstico del Síndrome Congénito del Virus del Zika en sus hijos, y determinar cómo se comunicó el diagnóstico. Método: estudio de enfoque cualitativo, con investigación interpretativa, fundamentado en el Modelo de Resiliencia, Estrés, Ajustes y Adaptación Familiar. La investigación se realizó en un Centro Especializado en Rehabilitación de un municipio da Paraíba (Brasil) entre junio y noviembre de 2017 con 40 madres de niños con el Síndrome Congénito del Virus del Zika. El material empírico se produjo a partir de un guión con carácter semiestructurado desarrollado por la investigadora, relacionado con las diferentes fases y componentes del proceso de adaptación y resiliencia. Los hallazgos se sometieron a análisis de contenido. Resultados: surgieron dos categorías temáticas: La detección del Síndrome Congénito del Virus del Zika: período del diagnóstico y expectativas maternas, y Cómo comunicar el diagnóstico: implicancias al momento de detectar el Síndrome Congénito del Virus del Zika. Conclusión: comunicar el diagnóstico y la conducta profesional al momento de dar la noticia tienen un peso importante en la resignificación del sentido de la malformación congénita. La interacción que establece el profesional de la salud y su postura están directamente relacionadas con el nivel de satisfacción con respecto a la información recibida.


RESUMO Objetivo: conhecer como as mães acometidas pelo Zika vírus na gestação souberam do diagnóstico da Síndrome Congênita do Zika vírus em seu(sua) filho(a) e apreender a forma com que a comunicação do diagnóstico foi transmitida. Método: estudo de abordagem qualitativa, com investigação interpretativa, fundamentado no Modelo de Resiliência, Estresse, Ajustamento e Adaptação Familiar. A pesquisa foi realizada em um Centro Especializado em Reabilitação de um município da Paraíba (Brasil), no período de junho a novembro de 2017, com 40 mães de crianças com a Síndrome Congênita do Zika vírus. O material empírico foi produzido a partir de um roteiro com caráter semiestruturado desenvolvido pela pesquisadora, relacionado com as diferentes fases e componentes do processo de adaptação e resiliência. Os achados foram submetidos à analise de conteúdo. Resultados: foram desveladas duas categorias temáticas: A descoberta da Síndrome Congênita do Zika vírus: período do diagnóstico e expectativas maternas, e A forma da comunicação do diagnóstico: implicações diante da descoberta da Síndrome Congênita do Zika vírus. Conclusão: a comunicação do diagnóstico e a conduta profissional no momento da informação possuem papéis importantes na ressignificação do sentido da malformação congênita. A interação estabelecida pelo profissional de saúde e sua postura estão diretamente relacionadas com a satisfação sobre a informação recebida.

2.
Epidemiol Serv Saude ; 29(4): e2020096, 2020.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-32756832

RESUMEN

Objective To describe the occurrence of Zika virus disease and its complications in the state of Tocantins and in its capital, the city of Palmas. Methods This was a descriptive study using data from health information systems. Results Incidence of reported Zika virus disease cases in 2015 and 2016 was 295.2/100,000 inhabitants and 411.1/100,000 inhab. in the general population, and 5.9/1,000 and 27.8/1,000 live births, respectively. Higher risks occurred in women, the 20-39 year age group, municipalities in the central and northwestern regions of the state and in hotter months (February and March). Incidence of Zika-related microcephaly during pregnancy was 0.06/1,000 live births. One case of Guillain-Barré Syndrome resulting from Zika virus infection was confirmed. Conclusion Zika virus disease hit Tocantins intensely, although its adverse outcomes were less frequent than in other states.

3.
PLoS Negl Trop Dis ; 14(8): e0008424, 2020 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-32745093

RESUMEN

Zika virus (ZIKV) causes congenital Zika syndrome (CZS), which is characterized by fetal demise, microcephaly and other abnormalities. ZIKV in the pregnant woman circulation must cross the placental barrier that includes fetal endothelial cells and trophoblasts, in order to reach the fetus. CZS occurs in ~1-40% of cases of pregnant women infected by ZIKV, suggesting that mothers' infection by ZIKV during pregnancy is not deterministic for CZS phenotype in the fetus. Therefore, other susceptibility factors might be involved, including the host genetic background. We have previously shown that in three pairs of dizygotic twins discordant for CZS, neural progenitor cells (NPCs) from the CZS-affected twins presented differential in vitro ZIKV susceptibility compared with NPCs from the non-affected. Here, we analyzed human-induced-pluripotent-stem-cell-derived (hiPSC-derived) trophoblasts from these twins and compared by RNA-Seq the trophoblasts from CZS-affected and non-affected twins. Following in vitro exposure to a Brazilian ZIKV strain (ZIKVBR), trophoblasts from CZS-affected twins were significantly more susceptible to ZIKVBR infection when compared with trophoblasts from the non-affected. Transcriptome profiling revealed no differences in gene expression levels of ZIKV candidate attachment factors, IFN receptors and IFN in the trophoblasts, either before or after ZIKVBR infection. Most importantly, ZIKVBR infection caused, only in the trophoblasts from CZS-affected twins, the downregulation of genes related to extracellular matrix organization and to leukocyte activation, which are important for trophoblast adhesion and immune response activation. In addition, only trophoblasts from non-affected twins secreted significantly increased amounts of chemokines RANTES/CCL5 and IP10 after infection with ZIKVBR. Overall, our results showed that trophoblasts from non-affected twins have the ability to more efficiently activate genes that are known to play important roles in cell adhesion and in triggering the immune response to ZIKV infection in the placenta, and this may contribute to predict protection from ZIKV dissemination into fetuses' tissues.

4.
Virus Res ; : 198087, 2020 Jul 29.
Artículo en Inglés | MEDLINE | ID: mdl-32738280

RESUMEN

Zika virus is an emergent arbovirus that has caused a public health emergency in South America. Zika virus infection is known to cause microcephaly and other congenital defects and Guillain-Barré syndrome. Unfortunately no direct antiviral treatments are available at present. IFN-stimulated gene 15 (ISG15) is one of the most upregulated host genes following type I interferon treatment or virus infections. ISG15 has been shown to have antiviral effect on a wide variety of viruses although pro-HCV replication was observed. However, the effect of ISG15 on ZIKV infection is not well defined. In this study, we try to clarify the effect of ISG15 on ZIKV replication and to further dissect the underlying mechanism. Our results indicated that ZIKV infection led to the increased expression of ISG15 in A549, 2fTGH, U5A cells. Overexpression of ISG15 stimulated ZIKV replication although ISG15 did not affect the viral entry. Further studies showed that this proviral effect was mediated through Jak/STAT signaling pathway and was ISGylation-dependent. Taken together, our work demonstrates that ISG15 is an important host factor exploited by ZIKV to facilitate its replication and might serve as a potential target for the development of novel antiviral agents.

5.
Commun Biol ; 3(1): 380, 2020 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-32669655

RESUMEN

Zika virus (ZIKV) is an infectious disease that has become an important concern worldwide, it associates with neurological disorders and congenital malformations in adults, also leading to fetal intrauterine growth restriction and microcephaly during pregnancy. However, there are currently no approved vaccines or specific antiviral drugs for preventing or treating ZIKV infection. Here, we show that two FDA-approved Na+/K+-ATPase inhibitors, ouabain and digoxin, can block ZIKV infection at the replication stage by targeting Na+/K+-ATPase. Furthermore, ouabain reduced the viral burden of ZIKV in adult mice, penetrated the placental barrier to enter fetal tissues, and protected fetal mice from ZIKV infection-induced microcephaly in a pregnant mouse model. Thus, ouabain has therapeutic potential for ZIKV.

6.
Sci Rep ; 10(1): 11906, 2020 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-32681135

RESUMEN

Zika virus (ZIKV) is an emerging flavivirus transmitted to humans by Aedes mosquitos. ZIKV can be transmitted from mother to fetus during pregnancy and can cause microcephaly and other birth defects. Effective vaccines for Zika are yet to be approved. Detection of the ZIKV is based on serological testing that often shows cross-reactivity with the Dengue virus (DENV) and other flaviviruses. We aimed to assemble a highly specific anti-Zika antibody panel to be utilized in the development of a highly specific and cost-effective ZIKV rapid quantification assay for viral load monitoring at point-of-care settings. To this end, we tested the affinity and specificity of twenty one commercially available monoclonal and polyclonal antibodies against ZIKV and DENV envelope proteins utilizing nine ZIKV and twelve DENV strains. We finalized and tested a panel of five antibodies for the specific detection and differentiation of ZIKV and DENV infected samples.

7.
PLoS One ; 15(7): e0235010, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32634152

RESUMEN

Since 2015 Brazil has experienced the social repercussions of the Zika virus epidemic, thus raising a debate about: difficulties of diagnosis; healthcare access for children with Zika Congenital Syndrome (ZCS); the search for benefits by affected families; social and gender inequalities; and a discussion on reproductive rights, among others. The objective of this article is to analyse access to specialized health services for the care of children born with ZCS in three North-eastern states of Brazil. This is an exploratory cross-sectional study which analyses recorded cases of microcephaly at the municipal level between 2015 and 2017. Most of the cases of ZCS were concentrated on the Northeast coast. Rio Grande do Norte and Paraiba had the highest incidence of microcephaly in the study period. The states of Bahia, Paraiba and Rio Grande do Norte were selected for their high incidence of microcephaly due to the Zika Virus. Socio-territorial vulnerability was stratified using access to microcephaly diagnosis and treatment indicators. The specialized care network was mapped according to State Health Secretaries Protocols. A threshold radius of 100 km was stablished as the maximum distance from municipalities centroids to specialised health care for children with microcephaly. Prenatal coverage was satisfactory in most of the study area, although availability of ultrasound equipment was uneven within states and health regions. Western Bahia had the lowest coverage of ultrasound equipment and lacked health rehabilitation services. ZCS's specialized health services were spread out over large areas, some of which were outside the affected patients' home municipalities, so displacements were expensive and very time consuming, representing an extra burden for the affected families. This study is the first to address accessibility of children with microcephaly to specialised health care services and points to the urgent need to expand coverage of these services in Brazil, especially in the northeastern states, which are most affected by the epidemic.

8.
Health Policy Plan ; 2020 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-32681164

RESUMEN

This article investigates how hope and trust played out for two groups at the forefront of the Zika epidemic: caregivers of children with congenital Zika syndrome and healthcare workers. We conducted 76 in-depth interviews with members of both groups to examine hope and trust in clinical settings, as well as trust in public institutions, in the health system and in the government of Brazil. During and after the Zika epidemic, hope and trust were important to manage uncertainty and risk, given the lack of scientific evidence about the neurological consequences of Zika virus infection. The capacity of healthcare workers and caregivers to trust and to co-create hope seems to have allowed relationships to develop that cushioned social impacts, reinforced adherence to therapeutics and enabled information flow. Hope facilitated parents to trust healthcare workers and interventions. Hope and trust appeared to be central in the establishment of support networks for caregivers. At the same time, mistrust in the government and state institutions may have allowed rumours and alternative explanations about Zika to spread. It may also have strengthened activism in mother's associations, which seemed to have both positive and negative implications for healthcare service delivery. The findings also point to distrust in international health actors and global health agenda, which can impact community engagement in future outbreak responses in Brazil and other countries in Latin America.

9.
J Proteome Res ; 2020 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-32686424

RESUMEN

Congenital Zika Syndrome was first described due to increased incidence of congenital abnormalities associated with Zika virus (ZIKV) infection. Since the eye develops as part of the embryo central nervous system (CNS) structure, it becomes a specialized compartment able to display symptoms of neurodegenerative diseases and have been proposed as a noninvasive approach to the early diagnosis of neurological diseases. Ocular lesions result from defects that occurred during embryogenesis and can become apparent in newborns exposed to ZIKV. Furthermore, absence of microcephaly cannot exclude occurrence of ocular lesions and other CNS manifestations. Considering the need for surveillance of newborns and infants with congenital exposure, we developed a method termed Cellular Imprinting Proteomic Assay (CImPA) to evaluate the ocular surface proteome specific to infants exposed to ZIKV during gestation compared to non-exposure. CImPA combines surface cells and fluid capture using membrane disks and large-scale quantitative proteomics approach, which allowed the first-time report of molecular alterations such as neutrophil degranulation, cell death signaling and ocular and neurological pathways, which are associated to ZIKV infection with and without the development of congenital Zika syndrome, CZS. Particularly, infants exposed to ZIKV during gestation and without early clinical symptoms could be detected using the CImPA method. At last, this methodology has broad applicability as it could be translated in the study of several neurological diseases to identify novel diagnostic biomarkers. Data are available via ProteomeXchange with identifier PXD014038.

10.
Gac Sanit ; 2020 Jul 10.
Artículo en Español | MEDLINE | ID: mdl-32660804

RESUMEN

OBJECTIVE: To understand the decision-making process of a group of women to continue gestation following a prenatal Zika virus infection and the diagnosis of microcephaly of their fetuses. METHOD: Qualitative study. Two discussion groups and semi-structured interviews were conducted with 21 women residing in the Department of Huila (Colombia) who presented a prenatal Zika virus infection between 2015 and 2016, their children were born with congenital microcephaly. The data were analyzed following the Grounded Theory approach. RESULTS: Four categories emerged from the analysis of the data showing a temporal process, from before to taking the decision to continue gestation following prenatal Zika virus infection to its consequences. The process begins with the diagnosis virus infection during the first trimester of gestation, continuing with medical recommendations to interrupt gestation and women's refusal to interrupt gestation, and ending with the birth of children with congenital microcephaly. CONCLUSION: Women rejected abortion due to ethical conflicts based on religious beliefs and the value of motherhood. It is necessary to design social support policies for women and families affected by this problem in Colombia. Due to the international impact of the epidemic, governments should take appropriate measures to deal with future cases of Zika infections in other countries.

11.
Neuroscientist ; : 1073858420943192, 2020 Jul 29.
Artículo en Inglés | MEDLINE | ID: mdl-32723210

RESUMEN

Unravelling the complexity of the human brain is a challenging task. Nowadays, modern neurobiologists have developed 3D model systems called "brain organoids" to overcome the technical challenges in understanding human brain development and the limitations of animal models to study neurological diseases. Certainly like most model systems in neuroscience, brain organoids too have limitations, as these minuscule brains lack the complex neuronal circuitry required to begin the operational tasks of human brain. However, researchers are hopeful that future endeavors with these 3D brain tissues could provide mechanistic insights into the generation of circuit complexity as well as reproducible creation of different regions of the human brain. Herein, we have presented the contemporary state of brain organoids with special emphasis on their mode of generation and their utility in modelling neurological disorders, drug discovery, and clinical trials.

12.
Am J Trop Med Hyg ; 2020 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-32723426

RESUMEN

We report the case of an infant born with congenital Zika syndrome (CZS). During the largest Zika virus (ZIKV) outbreak in Peru, the mother presented with fever and rash that were confirmed to be due to ZIKV by real-time PCR. The infant was born with severe microcephaly. Imaging revealed corpus callosum dysgenesis, lissencephaly, ventriculomegaly, and calcifications. Mild hypertrophic cardiomyopathy with diastolic dysfunction was reported in the echocardiogram. Valgus deviation of the lower extremities and a left clubfoot were diagnosed at birth. The hip ultrasound showed incipient signs of Graf type II dysplasia. The findings confirm that CZS is a multiorgan phenotype in which microcephaly is merely the tip of the iceberg. A multidisciplinary approach is needed for the evaluation of these children.

13.
Sci Rep ; 10(1): 12673, 2020 Jul 29.
Artículo en Inglés | MEDLINE | ID: mdl-32728054

RESUMEN

Robust epidemiological and biological evidence supports a causal link between prenatal Zika Virus (ZIKV) infection and congenital brain abnormalities including microcephaly. However, it remains uncertain if ZIKV infection in pregnancy also increases the risk for other adverse fetal and birth outcomes. In a prospective cohort study we investigated the influence of ZIKV on the prevalence of prematurity, low birth weight, small-for-gestational-age, and fetal death as well as microcephaly (i.e., overall and disproportionate) in the offspring of women attending a high-risk pregnancy clinic during the recent ZIKV outbreak in Brazil. During the recruitment period (01 March 2016-23 August 2017), urine samples were tested for ZIKV by RT-PCR from all women attending the high-risk pregnancy clinic at Jundiaí University Hospital and from the neonates after delivery. Of the 574 women evaluated, 44 (7.7%) were ZIKV RT-PCR positive during pregnancy. Of the 409 neonates tested, 19 (4.6%) were ZIKV RT-PCR positive in the first 10 days of life. In this cohort, maternal ZIKV exposure was not associated with increased risks of prematurity, low birth weight, small-for-gestational-age, or fetal death. However, relative to ZIKV-negative neonates, ZIKV-positive infants had a five-fold increased risk of microcephaly overall (RR 5.1, 95% CI 1.2-22.5) and a ten-fold increased risk of disproportionate microcephaly (RR 10.3, 95% CI 2.0-52.6). Our findings provide new evidence that, in a high-risk pregnancy cohort, ZIKV RT-PCR positivity in the neonate at birth is strongly associated with microcephaly. However, ZIKV infection during pregnancy does not appear to influence the risks of prematurity, low birth weight, small-for-gestational-age or fetal death in women who already have gestational comorbidities. The results suggest disproportion between neonatal head circumference and weight may be a useful screening indicator for the detection of congenital microcephaly associated with ZIKV infection.

14.
PLoS Negl Trop Dis ; 14(7): e0008413, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32628667

RESUMEN

Global Zika virus (ZIKV) outbreaks and their link to microcephaly have raised major public health concerns. However, the mechanism of maternal-fetal transmission remains largely unknown. In this study, we determined the role of yolk sac (YS) microglial progenitors in a mouse model of ZIKV vertical transmission. We found that embryonic (E) days 6.5-E8.5 were a critical window for ZIKV infection that resulted in fetal demise and microcephaly, and YS microglial progenitors were susceptible to ZIKV infection. Ablation of YS microglial progenitors significantly reduced the viral load in both the YS and the embryonic brain. Taken together, these results support the hypothesis that YS microglial progenitors serve as "Trojan horses," contributing to ZIKV fetal brain dissemination and congenital brain defects.

15.
Artículo en Inglés | MEDLINE | ID: mdl-32616394

RESUMEN

INTRODUCTION: Microcephaly is recognized as one of the main consequences of congenital Zika syndrome, but other serious problems such as global hypertonia, irritability, excessive crying, swallowing disorders, seizures, visual impairment and sensorineural hearing loss have been identified as associated with the syndrome. OBJECTIVE: Describe the developmental characteristics of hearing and language skills in the first year of life of children with normal hearing thresholds' and congenital Zika syndrome. METHODS: This is a cross-sectional study that evaluated hearing and language skills in the first year of life of 88 children with normal peripheral hearing and confirmed congenital Zika syndrome. All children were submitted to a behavioral auditory test and a validated questionnaire addressed to parents or caregivers, which was used as an instrument for assessing hearing and communicative skills. RESULTS: The delay in communicative skills was present in 87.5% of the children, while 44.3% of them demonstrated a delay in hearing acuity. Only the alteration of cervical motor control presented as a statistically significant association with delays in both skills (p-value=0.006 and <0.001 for hearing and communicative skills, respectively), while the presence of microcephaly and the degree of its severity were only associated with delayed development of communicative skills. CONCLUSION: Despite a normal peripheral auditory system, children with congenital Zika syndrome may demonstrate delayed language development by having neurological damage at the center of auditory processing, requiring more specific studies to clarify language acquisition in this population.

16.
J Infect Dis ; 2020 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-32614431

RESUMEN

The recent increase in babies born with brain and eye malformations in Brazil is associated with Zika virus (ZIKV) infection in utero. ZIKV alters host DNA methylation in vitro. Using genome-wide DNA methylation profiling we compared 18 babies born with congenital ZIKV microcephaly with 20 controls. We find ZIKV-associated alteration of host methylation patterns, notably at RABGAP1L that is important in brain development, at viral host immunity genes MX1 and ISG15, and in an epigenetic module containing the causal microcephaly gene MCPH1. Our data support the hypothesis that clinical signs of congenital ZIKV are associated with changes in DNA methylation.

17.
Biochimie ; 176: 52-61, 2020 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-32640279

RESUMEN

Zika virus (ZIKV) infection leads to microcephaly in newborns. Flaviviruses are known to secrete NS1 protein extracellularly and its concentration in serum directly co-relate to disease severity. The presence of ZIKV-NS1 near the brain microvascular endothelial cells (BMVECs) affects blood-brain-barrier, which is composed of tight junctions (TJs) and adherens junctions (AJs). Viruses utilize different strategies to circumvent this barrier to enter in brain. The present study demonstrated the mechanism of junctional integrity disruption in BMVECs by ZIKV-NS1 protein exposure. The Transendothelial Electrical Resistance and sodium fluorescein migration assays revealed the endothelial barrier disruption in BMVECs exposed to ZIKV-NS1 at different time (12hr and 24hr) and doses (500 ng/mL, 1000 ng/mL and 1500 ng/mL). The exposure of ZIKV-NS1 on BMVECs led to the phosphorylation of AJs and suppression of TJs through secreted ZIKV-NS1 in a bystander fashion. The activation of NADPH dependent reactive oxygen species activity and redox sensitive tyrosine kinase further increased the phosphorylation of AJs. The reduced expression of the phosphatase led to the increased phosphorylation of the AJs. The treatment with Diphenyleneiodonium chloride rescued the phosphatase and TJs expression and suppressed the expression of kinase and AJs in BMVECs exposed to ZIKV-NS1.

18.
Arq Neuropsiquiatr ; 78(7): 403-411, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32627805

RESUMEN

BACKGROUND: The congenital Zika syndrome involves structural brain changes, including ventriculomegaly, thin cerebral cortices, abnormal gyral pattern, cortical malformations, hypoplasia of the corpus callosum, myelination delay, subcortical diffuse calcifications, brainstem hypoplasia, and microcephaly in newborns. OBJECTIVE: This study aimed to describe the clinical characteristics of children with congenital Zika syndrome; to compare the outcomes of infants infected in the first (1T, n=20) and second trimesters of pregnancy (2T, n=11); to investigate correlations between birth weight, birth and follow-up head circumference, birth gestational age, and gross motor scores. METHODS: Participants were evaluated with Alberta Infant Motor Scale (AIMS) and part A of the Gross Motor Function Measure (GMFM-A). ANOVA compared head circumference, birth gestational age, birth weight, and gross motor performance of 1T and 2T. RESULTS: The correlations were investigated by Pearson correlation coefficients. ANOVA showed differences in birth and follow-up head circumferences. Head circumference was smaller in 1T, compared to 2T. Motor performance was classified as below the fifth percentile in AIMS in all children and 1T showed lower scores in prone, sitting, and total AIMS score, compared to 2T. Children ranged from 8 to 78% on GMFM-A and there was a poorer motor performance of 1T. Nineteen children showed hypertonia, six showed normal tone and six showed hypotonia. Birth head circumference was correlated with AIMS prone postural control. Follow-up head circumference was correlated to prone, supine and total AIMS scores. Smaller head circumference at birth and follow-up denoted poorer postural control. DISCUSSION: Children with congenital Zika syndrome showed microcephaly at birth and follow-up. Smaller head circumferences and poorer motor outcomes were observed in 1T. Infants showed poor visual and motor outcomes. Moderate positive correlations between birth and follow-up head circumference and gross motor function were found.

19.
Artículo en Inglés | MEDLINE | ID: mdl-32667392

RESUMEN

Severe neurological problems and other special manifestations such as high prevalence of structural cardiac changes has been described in infants vertically exposed to the Zika virus (ZIKV) and has been called congenital Zika virus syndrome (CZS). Previous studies have shown that the 24-hour Holter heart rate variability (HRV) analysis allows the prediction of worse outcomes in infants with neurological impairment and higher risk of sudden infant death syndrome (SIDS), hypertension, diabetes mellitus and other cardiovascular diseases. This study describes the 24-hour Holter findings of infants with confirmed vertical exposure to the ZIKV by positive polymerase chain reaction (PCR) assays in the mother's blood during pregnancy and/or in the urine or cerebrospinal fluid of the newborn. Data analysis was descriptive and included two subgroups according to the presence of fetal distress, positive PCR to ZIKV in the newborn, CZS and severe microcephaly. Heart rate, pauses, arrhythmias, ST segment and QT interval analyses and HRV evaluation through R-R, SDNN, pNN50 and rMMSD were described. The Mann-Whitney test was performed to assess differences between the two subgroups. The sample consisted of 15 infants with a mean age of 16 months, nine of whom were male. No arrhythmias or QT interval changes were observed. The comparison of HRV through the Mann-Whitney test showed a significant difference between patients with and without CZS, with and without severe microcephaly, with lower HRV in the groups with severe microcephaly and CZS. The study suggests that there is an increased risk of SIDS and cardiovascular diseases in this group of patients.


Asunto(s)
Transmisión Vertical de Enfermedad Infecciosa , Malformaciones del Sistema Nervioso/etiología , Complicaciones Infecciosas del Embarazo/virología , Infección por el Virus Zika/complicaciones , Virus Zika/aislamiento & purificación , Enfermedades Cardiovasculares/etiología , Femenino , Frecuencia Cardíaca , Humanos , Lactante , Recién Nacido , Masculino , Microcefalia/etiología , Reacción en Cadena de la Polimerasa , Embarazo , Muerte Súbita del Lactante , Virus Zika/genética , Infección por el Virus Zika/congénito
20.
Rev. Rede cuid. saúde ; 14(1): 25-38, jul,2020.
Artículo en Portugués | LILACS-Express | ID: biblio-1116335

RESUMEN

Recentemente na Polinésia Francesa e no Brasil, quadros severos com comprometimento do sistema nervoso central e microcefalias foram associados ao Zika vírus. O objetivo deste trabalho é identificar as publicações que relacionam a microcefalia pós-infecção pelo Zika vírus. Foi realizada uma Revisão Integrativa utilizando descritores relacionados com o objetivo nas bases de dados Medline, Lilacs e Scielo. Após as etapas iniciais de seleção foram incluídos 22 artigos no estudo. Identificou-se um surto de Zika no Brasil associado a um crescente número de casos com microcefalia congênita, nestas áreas, a microcefalia congênita aumentou em 20 vezes a prevalência antes do surto, sendo o maior aumento na região Nordeste. Verificou-se que a maior parte das publicações identificadas se refere a estudos de casos realizados após a epidemia ocorrida no Brasil. E que o desenvolvimento e o grau dessas anormalidades podem depender de variáveis clínicas como carga viral, fatores do hospedeiro, tempo de infecção aguda ou a presença de condições ainda desconhecidas. Sabe-se que pode afetar mulheres de todos os estratos socioeconômicos e exercer seus efeitos teratogênicos em todos os trimestres da gravidez, porém é mais frequente no primeiro trimestre, e está associada a anomalias cerebrais graves, incluindo calcificações, hipogria cortical, ventriculomegalia e anormalidades da substância branca. Uma avaliação completa desta associação pode revelar-se difícil a partir de dados recolhidos numa epidemia em curso, como no Brasil. O que torna necessários estudos mais amplos que possam identificar fatores/condições que contribuem para a infecção e consequentemente, a ocorrência de microcefalia associada ao Zika vírus


Recently in French Polynesia and Brazil, severe pictures with central nervous system involvement and microcephaly as associated with the Zika virus. The objective of this work is to identify as publications that relate a microcephaly post-infection by the Zika virus. An Integral Review has been performed use goal-related keywords in the Medline, Lilacs, and Scielo databases. After the initial stages of selection, 22 articles were included in the study. An outbreak of Zika in Brazil was associated with an increasing number of cases with congenital microcephaly, in these areas, congenital microcephaly increased by 20 times prevalence before the outbreak, being the largest increase in the Northeast region. It was verified that most of the identified publications refer to case studies carried out after an epidemic occurred in Brazil. What is the development and degree of abnormalities may depend on clinical variables such as viral load, host factors, time of acute infection or presence according to unknown circumstances. It is known to affect women of all socioeconomic strata and to exert its teratogenic effects in all trimesters of pregnancy, but is more frequent in the first trimester, and is associated with severe brain anomalies, including calcifications, cortical hypogria, ventriculomegaly, and white matter. A complete assessment of the association may prove difficult to draw from data collected in an ongoing epidemic, such as in Brazil. This makes it necessary to study the factors / conditions that contribute to an infection and, consequently, an occurrence of microcephaly associated with the Zika virus.

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