1
|
Saima, Khan A, Ali S, Jiang J, Miao Z, Kamil A, Khan SN, Arold ST. Clinical genomics expands the link between erroneous cell division, primary microcephaly and intellectual disability. Neurogenetics 2024; 25:179-191. [PMID: 38795246 DOI: 10.1007/s10048-024-00759-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 04/09/2024] [Indexed: 05/27/2024]
Abstract
Primary microcephaly is a rare neurogenic and genetically heterogeneous disorder characterized by significant brain size reduction that results in numerous neurodevelopmental disorders (NDD) problems, including mild to severe intellectual disability (ID), global developmental delay (GDD), seizures and other congenital malformations. This disorder can arise from a mutation in genes involved in various biological pathways, including those within the brain. We characterized a recessive neurological disorder observed in nine young adults from five independent consanguineous Pakistani families. The disorder is characterized by microcephaly, ID, developmental delay (DD), early-onset epilepsy, recurrent infection, hearing loss, growth retardation, skeletal and limb defects. Through exome sequencing, we identified novel homozygous variants in five genes that were previously associated with brain diseases, namely CENPJ (NM_018451.5: c.1856A > G; p.Lys619Arg), STIL (NM_001048166.1: c.1235C > A; p.(Pro412Gln), CDK5RAP2 (NM_018249.6 c.3935 T > G; p.Leu1312Trp), RBBP8 (NM_203291.2 c.1843C > T; p.Gln615*) and CEP135 (NM_025009.5 c.1469A > G; p.Glu490Gly). These variants were validated by Sanger sequencing across all family members, and in silico structural analysis. Protein 3D homology modeling of wild-type and mutated proteins revealed substantial changes in the structure, suggesting a potential impact on function. Importantly, all identified genes play crucial roles in maintaining genomic integrity during cell division, with CENPJ, STIL, CDK5RAP2, and CEP135 being involved in centrosomal function. Collectively, our findings underscore the link between erroneous cell division, particularly centrosomal function, primary microcephaly and ID.
Collapse
Affiliation(s)
- Saima
- Department of Biotechnology, Abdul Wali Khan University, Mardan, 23200, Khyber Pakhtunkhwa, Pakistan
| | - Amjad Khan
- Department of Zoology, University of Lakki Marwat, Lakki, 28420, Khyber Pakhtunkhwa, Pakistan.
- Institute for Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany.
- Alexander Von Humboldt Fellowship Foundation, Berlin, Germany.
| | - Sajid Ali
- Department of Biotechnology, Abdul Wali Khan University, Mardan, 23200, Khyber Pakhtunkhwa, Pakistan
| | - Jiuhong Jiang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
- Guangzhou National Laboratory, Guangzhou International Bio Island, Guangzhou, China
| | - Zhichao Miao
- GMU-GIBH Joint School of Life Sciences, The Guangdong-Hong Kong-Macau Joint Laboratory for Cell Fate Regulation and Diseases, Guangzhou National Laboratory, Guangzhou Medical University, Guangzhou, China
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Atif Kamil
- Department of Biotechnology, Abdul Wali Khan University, Mardan, 23200, Khyber Pakhtunkhwa, Pakistan
- Department of Internal Medicine, Brody Medicine School, East Carolina University, Greenville, NC, USA
| | - Shahid Niaz Khan
- Department of Zoology, Kohat University of Science & Technology, Kohat, 26000, Khyber Pakhtunkhwa, Pakistan
| | - Stefan T Arold
- Biological and Environmental Science and Engineering Division, Computational Biology Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| |
Collapse
|
2
|
Harish V, Colón-González FJ, Moreira FRR, Gibb R, Kraemer MUG, Davis M, Reiner RC, Pigott DM, Perkins TA, Weiss DJ, Bogoch II, Vazquez-Prokopec G, Saide PM, Barbosa GL, Sabino EC, Khan K, Faria NR, Hay SI, Correa-Morales F, Chiaravalloti-Neto F, Brady OJ. Human movement and environmental barriers shape the emergence of dengue. Nat Commun 2024; 15:4205. [PMID: 38806460 PMCID: PMC11133396 DOI: 10.1038/s41467-024-48465-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/29/2024] [Indexed: 05/30/2024] Open
Abstract
Understanding how emerging infectious diseases spread within and between countries is essential to contain future pandemics. Spread to new areas requires connectivity between one or more sources and a suitable local environment, but how these two factors interact at different stages of disease emergence remains largely unknown. Further, no analytical framework exists to examine their roles. Here we develop a dynamic modelling approach for infectious diseases that explicitly models both connectivity via human movement and environmental suitability interactions. We apply it to better understand recently observed (1995-2019) patterns as well as predict past unobserved (1983-2000) and future (2020-2039) spread of dengue in Mexico and Brazil. We find that these models can accurately reconstruct long-term spread pathways, determine historical origins, and identify specific routes of invasion. We find early dengue invasion is more heavily influenced by environmental factors, resulting in patchy non-contiguous spread, while short and long-distance connectivity becomes more important in later stages. Our results have immediate practical applications for forecasting and containing the spread of dengue and emergence of new serotypes. Given current and future trends in human mobility, climate, and zoonotic spillover, understanding the interplay between connectivity and environmental suitability will be increasingly necessary to contain emerging and re-emerging pathogens.
Collapse
Affiliation(s)
- Vinyas Harish
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Vector Institute for Artificial Intelligence, Toronto, ON, Canada
| | - Felipe J Colón-González
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Filipe R R Moreira
- Medical Research Council Centre for Global Infectious Disease Analysis, Abdul Latif Jameel Institute for Disease and Emergency Analytics and Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Rory Gibb
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, UK
- Department of Genetics, Evolution and Environment, University College London, London, UK
| | | | | | - Robert C Reiner
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
- Department of Health Metrics Sciences, School of Medicine, University of Washington, Seattle, WA, USA
| | - David M Pigott
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
- Department of Health Metrics Sciences, School of Medicine, University of Washington, Seattle, WA, USA
| | - T Alex Perkins
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
| | - Daniel J Weiss
- Geospatial Health and Development, Telethon Kids Institute, Nedlands, WA, Australia
- Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - Isaac I Bogoch
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Divisions of General Internal Medicine and Infectious Diseases, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | | | | | - Gerson L Barbosa
- Pasteur Institute, State Secretary of Health of São Paulo, São Paulo, SP, Brazil
| | - Ester C Sabino
- Institute of Tropical Medicine, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Kamran Khan
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- BlueDot, Toronto, ON, Canada
- Division of Infectious Diseases, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
- Li Ka Shing Knowledge Institute, Unity Health Toronto, Toronto, ON, Canada
| | - Nuno R Faria
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Institute of Tropical Medicine, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Simon I Hay
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
- Department of Health Metrics Sciences, School of Medicine, University of Washington, Seattle, WA, USA
| | - Fabián Correa-Morales
- Centro Nacional de Programas Preventivos y Control de Enfermedades (CENAPRECE) Secretaria de Salud Mexico, Ciudad de Mexico, Mexico
| | | | - Oliver J Brady
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, UK.
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK.
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, UK.
| |
Collapse
|
3
|
Clarke J, Lim A, Gupte P, Pigott DM, van Panhuis WG, Brady OJ. A global dataset of publicly available dengue case count data. Sci Data 2024; 11:296. [PMID: 38485954 PMCID: PMC10940302 DOI: 10.1038/s41597-024-03120-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/04/2024] [Indexed: 03/18/2024] Open
Abstract
OpenDengue is a global database of dengue case data collated from public sources and standardised and formatted to facilitate easy reanalysis. Dataset version 1.2 of this database contains information on over 56 million dengue cases from 102 countries between 1924 and 2023, making it the largest and most comprehensive dengue case database currently available. Over 95% of records are at the weekly or monthly temporal resolution and subnational data is available for 40 countries. To build OpenDengue we systematically searched databases, ministry of health websites, peer reviewed literature and Pro-MED mail reports and extracted denominator-based case count data. We undertake standardisation and error checking protocols to ensure consistency and resolve discrepancies. We meticulously documented the extraction process to ensure records are attributable and reproducible. The OpenDengue database remains under development with plans for further disaggregation and user contributions are encouraged. This new dataset can be used to better understand the long-term drivers of dengue transmission, improve estimates of disease burden, targeting and evaluation of interventions and improving future projections.
Collapse
Affiliation(s)
- J Clarke
- Department of Infectious Disease Epidemiology and Dynamics, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - A Lim
- Department of Infectious Disease Epidemiology and Dynamics, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - P Gupte
- Department of Infectious Disease Epidemiology and Dynamics, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK
| | - D M Pigott
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
- Department of Health Metrics Sciences, School of Medicine, University of Washington, Seattle, WA, USA
| | - W G van Panhuis
- National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - O J Brady
- Department of Infectious Disease Epidemiology and Dynamics, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.
| |
Collapse
|
4
|
Roell Y, Pezzi L, Lozano-Parra A, Olson D, Messina J, Quandelacy T, Drexler JF, Brady O, Karimzadeh M, Jaenisch T. Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps. PLoS Negl Trop Dis 2024; 18:e0012017. [PMID: 38517912 PMCID: PMC10990225 DOI: 10.1371/journal.pntd.0012017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 04/03/2024] [Accepted: 02/20/2024] [Indexed: 03/24/2024] Open
Abstract
The 2015-17 Zika virus (ZIKV) epidemic in the Americas subsided faster than expected and evolving population immunity was postulated to be the main reason. Herd immunization is suggested to occur around 60-70% seroprevalence, depending on demographic density and climate suitability. However, herd immunity was only documented for a few cities in South America, meaning a substantial portion of the population might still be vulnerable to a future Zika virus outbreak. The aim of our study was to determine the vulnerability of populations to ZIKV by comparing the environmental suitability of ZIKV transmission to the observed seroprevalence, based on published studies. Using a systematic search, we collected seroprevalence and geospatial data for 119 unique locations from 37 studies. Extracting the environmental suitability at each location and converting to a hypothetical expected seroprevalence, we were able to determine the discrepancy between observed and expected. This discrepancy is an indicator of vulnerability and divided into three categories: high risk, low risk, and very low risk. The vulnerability was used to evaluate the level of risk that each location still has for a ZIKV outbreak to occur. Of the 119 unique locations, 69 locations (58%) fell within the high risk category, 47 locations (39%) fell within the low risk category, and 3 locations (3%) fell within the very low risk category. The considerable heterogeneity between environmental suitability and seroprevalence potentially leaves a large population vulnerable to future infection. Vulnerability seems to be especially pronounced at the fringes of the environmental suitability for ZIKV (e.g. Sao Paulo, Brazil). The discrepancies between observed and expected seroprevalence raise the question: "why did the ZIKV epidemic stop with large populations unaffected?". This lack of understanding also highlights that future ZIKV outbreaks currently cannot be predicted with confidence.
Collapse
Affiliation(s)
- Yannik Roell
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
| | - Laura Pezzi
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Universitá di Corsica, IRD 190, Inserm 1207, IRBA), France
| | - Anyela Lozano-Parra
- Grupo de Epidemiología Clínica, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Daniel Olson
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
- Division of Pediatric Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, United States of America
| | - Jane Messina
- School of Geography and the Environment, University of Oxford, Oxford, United Kingdom
- Oxford School of Global and Area Studies, University of Oxford, Oxford, United Kingdom
| | - Talia Quandelacy
- Department of Epidemiology, University of Colorado, Aurora, Colorado, United States of America
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Oliver Brady
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre for Mathematical Modelling of Infectious Diseases, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Morteza Karimzadeh
- Department of Geography, University of Colorado, Boulder, Colorado, United States of America
| | - Thomas Jaenisch
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
- Heidelberg Institute of Global Health (HIGH), Heidelberg University Hospital, Heidelberg, Germany
| |
Collapse
|
5
|
Obłoza M, Milewska A, Botwina P, Szczepański A, Medaj A, Bonarek P, Szczubiałka K, Pyrć K, Nowakowska M. Curcumin-Poly(sodium 4-styrenesulfonate) Conjugates as Potent Zika Virus Entry Inhibitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5426-5437. [PMID: 38277775 PMCID: PMC10859898 DOI: 10.1021/acsami.3c13893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/04/2024] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Curcumin, a natural product with recognized antiviral properties, is limited in its application largely due to its poor solubility. This study presents the synthesis of water-soluble curcumin-poly(sodium 4-styrenesulfonate) (Cur-PSSNan) covalent conjugates. The antiflaviviral activity of conjugates was validated in vitro by using the Zika virus as a model. In the development of these water-soluble curcumin-containing derivatives, we used the macromolecules reported by us to also hamper viral infections. Mechanistic investigations indicated that the conjugates exhibited excellent stability and bioavailability. The curcumin and macromolecules in concerted action interact directly with virus particles and block their attachment to host cells, hampering the infection process.
Collapse
Affiliation(s)
- Magdalena Obłoza
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Aleksandra Milewska
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Paweł Botwina
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
- Department
of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Artur Szczepański
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Aneta Medaj
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
- Doctoral
School of Exact and Natural Sciences, Jagiellonian
University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Piotr Bonarek
- Department
of Physical Biochemistry, Faculty of Biochemistry, Biophysics and
Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Krzysztof Szczubiałka
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Krzysztof Pyrć
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Maria Nowakowska
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| |
Collapse
|
6
|
Duarte JL, Di Filippo LD, de Faria Mota Oliveira AEM, Sábio RM, Marena GD, Bauab TM, Duque C, Corbel V, Chorilli M. Development and characterization of potential larvicidal nanoemulsions against Aedes aegypti. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:104-114. [PMID: 38264062 PMCID: PMC10804528 DOI: 10.3762/bjnano.15.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/21/2023] [Indexed: 01/25/2024]
Abstract
Plant-based insecticides offer advantages such as negligible residual effects, reduced risks to both humans and the environment, and immunity to resistance issues that plague conventional chemicals. However, the practical use of monoterpenes in insect control has been hampered by challenges including their poor solubility and stability in aqueous environments. In recent years, the application of nanotechnology-based formulations, specifically nanoemulsions, has emerged as a prospective strategy to surmount these obstacles. In this study, we developed and characterized nanoemulsions based on cymene and myrcene and assessed their toxicity both in vitro using human keratinocytes (HaCAT) cells and in an in vivo model involving Galleria mellonella larvae. Additionally, we investigated the insecticidal efficacy of monoterpenes against the mosquito Aedes aegypti, the primary dengue vector, via larval bioassay. Employing a low-energy approach, we successfully generated nanoemulsions. The cymene-based nanoemulsion exhibited a hydrodynamic diameter of approximately 98 nm and a zeta potential of -25 mV. The myrcene-based nanoemulsion displayed a hydrodynamic diameter of 118 nm and a zeta potential of -20 mV. Notably, both nanoemulsions demonstrated stability over 60 days, accompanied by controlled release properties and low toxicity towards HaCAT cells and Galleria mellonella larvae. Moreover, the nanoemulsions exhibited significant lethality against third-instar Aedes aegypti larvae at a concentration of 50 mg/L. In conclusion, the utilization of nanoemulsions encapsulating cymene and myrcene presents a promising avenue for overcoming the limitations associated with poor solubility and stability of monoterpenes. This study sheds light on the potential of the nanoemulsions as effective and environmentally friendly insecticides in the ongoing battle against mosquito-borne diseases.
Collapse
Affiliation(s)
- Jonatas L Duarte
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Leonardo Delello Di Filippo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Rafael Miguel Sábio
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Gabriel Davi Marena
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo, Brazil
| | - Tais Maria Bauab
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo, Brazil
| | - Cristiane Duque
- Department of Preventive and Restorative Dentistry, Araçatuba Dental School - São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Vincent Corbel
- Institut de Recherche pour le Développement (IRD), MIVEGEC, Univ. Montpellier, CNRS, IRD, 911 Av Agropolis, 34 394 Montpellier, France
- Fundação Oswaldo Cruz (FIOCRUZ), Instituto Oswaldo Cruz (IOC), Laboratório de Fisiologia e Controle de Artrópodes Vetores (Laficave). Avenida Brasil, 4365 Manguinhos, Rio de Janeiro – RJ, CEP: 21040-360, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| |
Collapse
|
7
|
Hoffman SA, Maldonado YA. Emerging and re-emerging pediatric viral diseases: a continuing global challenge. Pediatr Res 2024; 95:480-487. [PMID: 37940663 PMCID: PMC10837080 DOI: 10.1038/s41390-023-02878-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/08/2023] [Accepted: 10/19/2023] [Indexed: 11/10/2023]
Abstract
The twenty-first century has been marked by a surge in viral epidemics and pandemics, highlighting the global health challenge posed by emerging and re-emerging pediatric viral diseases. This review article explores the complex dynamics contributing to this challenge, including climate change, globalization, socio-economic interconnectedness, geopolitical tensions, vaccine hesitancy, misinformation, and disparities in access to healthcare resources. Understanding the interactions between the environment, socioeconomics, and health is crucial for effectively addressing current and future outbreaks. This scoping review focuses on emerging and re-emerging viral infectious diseases, with an emphasis on pediatric vulnerability. It highlights the urgent need for prevention, preparedness, and response efforts, particularly in resource-limited communities disproportionately affected by climate change and spillover events. Adopting a One Health/Planetary Health approach, which integrates human, animal, and ecosystem health, can enhance equity and resilience in global communities. IMPACT: We provide a scoping review of emerging and re-emerging viral threats to global pediatric populations This review provides an update on current pediatric viral threats in the context of the COVID-19 pandemic This review aims to sensitize clinicians, epidemiologists, public health practitioners, and policy stakeholders/decision-makers to the role these viral diseases have in persistent pediatric morbidity and mortality.
Collapse
Affiliation(s)
- Seth A Hoffman
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.
| | - Yvonne A Maldonado
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| |
Collapse
|
8
|
Camacho-Concha N, Santana-Román ME, Sánchez NC, Velasco I, Pando-Robles V, Pedraza-Alva G, Pérez-Martínez L. Insights into Zika Virus Pathogenesis and Potential Therapeutic Strategies. Biomedicines 2023; 11:3316. [PMID: 38137537 PMCID: PMC10741857 DOI: 10.3390/biomedicines11123316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 12/24/2023] Open
Abstract
Zika virus (ZIKV) has emerged as a significant public health threat, reaching pandemic levels in 2016. Human infection with ZIKV can manifest as either asymptomatic or as an acute illness characterized by symptoms such as fever and headache. Moreover, it has been associated with severe neurological complications in adults, including Guillain-Barre syndrome, and devastating fetal abnormalities, like microcephaly. The primary mode of transmission is through Aedes spp. mosquitoes, and with half of the world's population residing in regions where Aedes aegypti, the principal vector, thrives, the reemergence of ZIKV remains a concern. This comprehensive review provides insights into the pathogenesis of ZIKV and highlights the key cellular pathways activated upon ZIKV infection. Additionally, we explore the potential of utilizing microRNAs (miRNAs) and phytocompounds as promising strategies to combat ZIKV infection.
Collapse
Affiliation(s)
- Nohemi Camacho-Concha
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - María E. Santana-Román
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Nilda C. Sánchez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Iván Velasco
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico;
- Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Ciudad de México 14269, Mexico
| | - Victoria Pando-Robles
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Morelos, Mexico;
| | - Gustavo Pedraza-Alva
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| | - Leonor Pérez-Martínez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca 62210, Morelos, Mexico; (N.C.-C.); (M.E.S.-R.); (N.C.S.); (G.P.-A.)
| |
Collapse
|
9
|
Gupta Y, Baranwal M, Chudasama B. Immunoinformatics-Based Identification of the Conserved Immunogenic Peptides Targeting of Zika Virus Precursor Membrane Protein. Viral Immunol 2023; 36:503-519. [PMID: 37486711 DOI: 10.1089/vim.2023.0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023] Open
Abstract
Zika virus infections lead to neurological complications such as congenital Zika syndrome and Guillain-Barré syndrome. Rising Zika infections in newborns and adults have triggered the need for vaccine development. In the current study, the precursor membrane (prM) protein of the Zika virus is explored for its functional importance and design of epitopes enriched conserved peptides with the usage of different immunoinformatics approach. Phylogenetic and mutational analyses inferred that the prM protein is highly conserved. Three conserved peptides containing multiple T and B cell epitopes were designed by employing different epitope prediction algorithms. IEDB population coverage analysis of selected peptides in six different continents has shown the population coverage of 60-99.8% (class I HLA) and 80-100% (class II HLA). Molecular docking of selected peptides/epitopes was carried out with each of class I and II HLA alleles using HADDOCK. A majority of peptide-HLA complex (pHLA) have HADDOCK scores found to be comparable and more than native-HLA complex representing the good binding interaction of peptides to HLA. Molecular dynamics simulation with best docked pHLA complexes revealed that pHLA complexes are stable with RMSD <5.5Å. Current work highlights the importance of prM as a strong antigenic protein and selected peptides have the potential to elicit humoral and cell-mediated immune responses.
Collapse
Affiliation(s)
- Yogita Gupta
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Manoj Baranwal
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Bhupendra Chudasama
- School of Physics & Materials Science, Thapar Institute of Engineering and Technology, Patiala, India
| |
Collapse
|
10
|
de Amorin Vilharba BL, Yamamura M, de Azevedo MV, Fernandes WDS, Santos-Pinto CDB, de Oliveira EF. Disease burden of congenital Zika virus syndrome in Brazil and its association with socioeconomic data. Sci Rep 2023; 13:11882. [PMID: 37482558 PMCID: PMC10363536 DOI: 10.1038/s41598-023-38553-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 07/11/2023] [Indexed: 07/25/2023] Open
Abstract
Zika virus (ZIKV) infection became a global public health concern, causing an epidemic in Latin America from 2015 to 2016, when a sudden increase in cases of microcephaly and other congenital anomalies was observed. In 2016, the Centers for Disease Control and Prevention and the World Health Organization defined congenital Zika-associated syndrome (CZS) as a set of congenital anomalies seen in children born to mothers with a history of gestational Zika fever, who have microcephaly as the most prevalent clinical sign. In order to describe the magnitude of CZS in Brazil, this study estimated the burden of disease due to CZS in Brazil using the disability-adjusted life years (DALY) indicator and other frequency measures, such as incidence and mortality rate, during the years 2015-2020. The association of these indicators with socioeconomic variables was also evaluated using Spearman's correlation coefficient. Choropleth maps were used to evaluate the spatial distribution of the indicators evaluated and the spatial autocorrelation was verified by the Bivariate Moran Local Index. From 2015 to 2020, 3,591 cases of CZS were confirmed in Brazil, with an incidence of 44.03 cases per 1000 live births, and a specific mortality of 12.35 deaths per 1000 live births. A global loss of 30,027.44 DALYs was estimated from 2015 to 2020. The Northeast region had the highest values for all health indicators assessed. Spatial correlation and autocorrelation analyses showed significant associations between health and socioeconomic indicators, such as per capita income, Gini index, illiteracy rate and basic sanitation. The study allowed us to have access to all reported cases of CZS, showing us the possible situation of the disease in Brazil; therefore, we believe that our results can help in the understanding of future studies.
Collapse
Affiliation(s)
- Bruna Luiza de Amorin Vilharba
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
| | - Mellina Yamamura
- Departamento de Enfermagem, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | | | - Wagner de Souza Fernandes
- Universidade Federal de Mato Grosso do Sul, Hospital Universitário Maria Aparecida Pedrossian-HUMAP-EBSERH, Campo Grande, MS, Brasil
| | | | - Everton Falcão de Oliveira
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil.
- Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil.
| |
Collapse
|
11
|
Rosado LEP, Martelli CMT, Brickley EB, Gomes MBF, de Toledo Lima T, da Costa PSS, de Ávila MP, Viggiano MB, do Amaral WN, de Rezende Feres VC, Fiaccadori FS, de Sene Amancio Zara AL, Ferreira-Lopes A, Turchi MD. Risk of adverse pregnancy and infant outcomes associated with prenatal Zika virus infection: a post-epidemic cohort in Central-West Brazil. Sci Rep 2023; 13:7335. [PMID: 37147405 PMCID: PMC10161159 DOI: 10.1038/s41598-023-33334-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 04/11/2023] [Indexed: 05/07/2023] Open
Abstract
This study aimed to estimate the risks of adverse infant outcomes in the first year of life related to prenatal Zika virus (ZIKV) exposure. A prospective cohort of pregnant women with rash was recruited in Central-West Brazil in a post-epidemic period (January 2017 to April 2019). We evaluated participants' medical histories and performed ZIKV diagnostic testing using molecular (reverse transcription polymerase chain reaction [RT-PCR]) and serologic (immunoglobulin [Ig]M and plaque reduction neutralization tests [PRNT90]) assays. The ZIKV-positive group included both RT-PCR-confirmed cases as well as IgM and/or PRNT90-positive probable cases. Children were evaluated at birth and in the first 12 months of life. Transfontanellar ultrasound, central nervous system computed tomography, eye fundoscopy and retinography were performed. We estimated the absolute risk and 95% confidence interval (95% CI) of adverse infant outcomes among confirmed prenatally ZIKV-exposed children. Among 81 pregnant women with rash, 43 (53.1%) were ZIKV infected. The absolute risk of microcephaly among offspring of ZIKV-infected pregnant women was 7.0% (95% CI: 1.5-19.1), including the two cases of microcephaly detected prenatally and one detected postnatally. In total, 54.5% (95% CI: 39.8-68.7) of children in the ZIKV-exposed group had at least one ophthalmic abnormality, with the most frequent abnormalities being focal pigmentary mottling and chorioretinal atrophy or scarring. Our findings reinforce the importance of long-term monitoring of prenatally ZIKV-exposed children born apparently asymptomatic for Congenital Zika Syndrome.
Collapse
Affiliation(s)
- Luiza Emylce Pela Rosado
- Graduate Program in Tropical Medicine and Public Health of the Federal University of Goias, Goiânia, Brazil
- Obstetrics Department, Maternal and Infant Hospital of Goias State, Goiânia, Brazil
| | | | - Elizabeth B Brickley
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Maria Barbara Franco Gomes
- Graduate Program in Health Sciences of the Federal University of Goias, Goiânia, Brazil
- Pediatric Department, Maternal and Infant Hospital of Goias State, Goiânia, Brazil
| | - Talita de Toledo Lima
- Graduate Program in Health Sciences of the Federal University of Goias, Goiânia, Brazil
- Reference Center in Ophthalmology of the Federal University of Goias, Goiânia, Brazil
| | | | - Marcos Pereira de Ávila
- Reference Center in Ophthalmology of the Federal University of Goias, Goiânia, Brazil
- Retina and Vitreous Department, School of Medicine, Federal University of Goias, Goiânia, Brazil
| | | | | | | | - Fabiola Souza Fiaccadori
- Virology Department, Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Brazil
| | | | | | - Marilia Dalva Turchi
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Brazil.
| |
Collapse
|
12
|
Freitas LP, Lowe R, Koepp AE, Alves SV, Dondero M, Marteleto LJ. Identifying hidden Zika hotspots in Pernambuco, Brazil: a spatial analysis. Trans R Soc Trop Med Hyg 2023; 117:189-196. [PMID: 36326785 PMCID: PMC9977212 DOI: 10.1093/trstmh/trac099] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/23/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Northeast Brazil has the world's highest rate of Zika-related microcephaly. However, Zika case counts cannot accurately describe burden because mandatory reporting was only established when the epidemic was declining in the region. METHODS To advance the study of the Zika epidemic, we identified hotspots of Zika in Pernambuco state, Northeast Brazil, using Aedes-borne diseases (dengue, chikungunya and Zika) and microcephaly data. We used Kulldorff's Poisson purely spatial scan statistic to detect low- and high-risk clusters for Aedes-borne diseases (2014-2017) and for microcephaly (2015-2017), separately. Municipalities were classified according to a proposed gradient of Zika burden during the epidemic, based on the combination of cluster status in each analysis and considering the strength of the evidence. RESULTS We identified 26 Aedes-borne diseases clusters (11 high-risk) and 5 microcephaly clusters (3 high-risk) in Pernambuco. According to the proposed Zika burden gradient, our results indicate that the northeast of Pernambuco and the Sertão region were hit hardest by the Zika epidemic. The first is the most populous area of Pernambuco, while the second has one of the highest rates of social and economic inequality in Brazil. CONCLUSION We successfully identified possible hidden Zika hotspots using a simple methodology combining Aedes-borne diseases and microcephaly information.
Collapse
Affiliation(s)
- Laís Picinini Freitas
- Population Research Center, University of Texas at Austin, Austin, Texas 78712-1699, USA
| | - Rachel Lowe
- Department of Earth Sciences, Barcelona Supercomputing Center (BSC), Barcelona 08034, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
- Centre on Climate Change & Planetary Health and Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
| | - Andrew E Koepp
- Population Research Center, University of Texas at Austin, Austin, Texas 78712-1699, USA
- Department of Human Development and Family Sciences, University of Texas at Austin, Austin, Texas 78712, USA
| | - Sandra Valongueiro Alves
- Post-graduation Program of Public Health, Centro de Ciências Médicas, Universidade Federal de Pernambuco, Recife, Pernambuco 50670-901, Brazil
| | - Molly Dondero
- Department of Sociology, American University, Washington, D.C. 20016-8072, USA
| | - Letícia J Marteleto
- Population Research Center, University of Texas at Austin, Austin, Texas 78712-1699, USA
- Department of Sociology, University of Texas at Austin, Austin, Texas 78712, USA
| |
Collapse
|
13
|
Stein RA, Grayon A, Katz A, Chervenak FA. The Zika virus: an opportunity to revisit reproductive health needs and disparities. Germs 2022; 12:519-537. [PMID: 38021183 PMCID: PMC10660223 DOI: 10.18683/germs.2022.1357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/24/2022] [Accepted: 12/29/2022] [Indexed: 12/01/2023]
Abstract
First isolated in 1947, the Zika virus was initially connected only to limited or sporadic human infections. In late 2015, the temporal clustering of a Zika outbreak and microcephaly in newborn babies from northeastern Brazil, and the identification of a causal link between the two, led to the characterization of the congenital Zika syndrome. In the wake of the epidemic, several countries from Latin America advised women to postpone pregnancies for periods ranging from six months to two years. These recommendations initiated critical conversations about the challenges of implementing them in societies with limited access to contraception, widespread socioeconomic inequalities, and high rates of unplanned and adolescent pregnancies. The messaging targeted exclusively women, despite a high prevalence of imbalances in the relationship power, and addressed all women as a group, failing to recognize that the decision to postpone pregnancies will impact different women in different ways, depending on their age at the time. Finally, in several countries affected by the Zika epidemic, due to restrictive reproductive policies, legally terminating a pregnancy is no longer an option even at the earliest time when brain malformations as part of the congenital Zika syndrome can be detected by ultrasonography. The virus continued to circulate after 2016 in several countries. Climate change models predict an expansion of the geographical area where local Zika transmission may occur, indicating that the interface between the virus, teratogenesis, and reproductive rights is a topic of considerable interest for medicine, social sciences, and public health for years to come.
Collapse
Affiliation(s)
- Richard A. Stein
- MD, PhD, NYU Tandon School of Engineering, Department of Chemical and Biomolecular Engineering, 6 MetroTech Center, Brooklyn 11201, NY, USA
| | - Alexis Grayon
- NYU Tandon School of Engineering, Department of Chemical and Biomolecular Engineering, 6 MetroTech Center, Brooklyn 11201, NY, USA
| | - Adi Katz
- MD, Department of Obstetrics and Gynecology, Lenox Hill Hospital, Donald and Barbara Zucker School of Medicine at Hofstra Northwell, 110 E 77th Street, New York, NY, 10075, USA
| | - Frank A. Chervenak
- MD, Department of Obstetrics and Gynecology, Lenox Hill Hospital, Donald and Barbara Zucker School of Medicine at Hofstra Northwell, 110 E 77th Street, New York, NY, 10075, USA
| |
Collapse
|
14
|
Ribeiro MFM, Queiróz KBPD, Prudente COM. Motor development of children exposed to the zika virus: systematic reviews. REVISTA BRASILEIRA DE SAÚDE MATERNO INFANTIL 2022. [DOI: 10.1590/1806-9304202200040002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Abstract Objectives: to describe the motor development, in the first two years of life, of children with evidence of congenital Zika virus syndrome (CZS) at birth and of children exposed to the Zika virus (ZIKV) during pregnancy, but without evidence of CZS. Methods: systematic review, according to the recommendations of the Preferred Reporting Items for Systematic Reviews (PRISMA). The search took place in the VHL/LILACS interface and BIREME/ PubMed interface databases until March 2020. Two researchers analyzed the quality of the studies using the Johanna Briggs Institute methodology. Results: 21 articles were selected. Children with CZS have severe impairment of motor functions and a high prevalence of spastic cerebral palsy. At two years of life, most reached only early levels of motor development; with impaired vision, hearing, language, cognition, behavior, and social interaction. On the other hand, children exposed to ZIKV, but without evidence of CZS, are at lower risk, about 20% have late manifestations of delay and/or neurodevelopmental disorder. Variables associated with greater motor impairment are early maternal infection, preterm birth, lower head circumference, abnormal imaging, use of anticonvulsant, increasing age, arthrogryposis, epilepsy, deficits in vision, language, cognition, and lower income. Conclusion: Most children with CZS show severe motor impairment; a small part of those exposed to ZIKV, without evidence of the syndrome at birth, have alteration in neurodevelopment. Those children should be followed in the long-term, since some manifestations may occur belatedly.
Collapse
|
15
|
Novaes C, Silva Pinto F, Marques RC. Aedes Aegypti-Insights on the Impact of Water Services. GEOHEALTH 2022; 6:e2022GH000653. [PMID: 36439027 PMCID: PMC9682355 DOI: 10.1029/2022gh000653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/08/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Epidemics in general and dengue in particular surcharge the health services and the economy. However, the fighting actions are circumscribed to the health sector despite the known positive economic impacts that the investments in water supply and sanitation services (WSS) may cause on society and public health. Besides the fact that urban WSS infrastructure is closely linked to disease prevention, in Brazil, the user's perception and demand are very few and many institutional aspects, like the integration between local WSS, health, environment, and development of city councils, need to be improved and better aligned. In this way, disease control and vector density reduction remain challenges to be overcome. This article addresses the need for greater institutionalization of urban WSS relating them to health aspects from official data. It concludes that the negative impacts of lacking universal access to WSS on dengue and other mosquito diseases are dispersed in all cities, regions, and populations regardless of their degree of development. Furthermore, contrary to what is normally emphasized, the analysis carried out shows that the lack of urban stormwater management systems may be an important component of WSS in preventing the proliferation of dengue disease.
Collapse
Affiliation(s)
- Carlos Novaes
- CERISInstituto Superior TécnicoUniversity of LisbonLisbonPortugal
| | - Francisco Silva Pinto
- CERISInstituto Superior TécnicoUniversity of LisbonLisbonPortugal
- EIGeSLusofona UniversityLisboaPortugal
| | | |
Collapse
|
16
|
Cifuentes MP, Suarez CM, Cifuentes R, Malod-Dognin N, Windels S, Valderrama JF, Juarez PD, Valdez RB, Colen C, Phillips C, Ramesh A, Im W, Lichtveld M, Mouton C, Pržulj N, Hood DB. Big Data to Knowledge Analytics Reveals the Zika Virus Epidemic as Only One of Multiple Factors Contributing to a Year-Over-Year 28-Fold Increase in Microcephaly Incidence. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19159051. [PMID: 35897436 PMCID: PMC9331749 DOI: 10.3390/ijerph19159051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/24/2022] [Accepted: 07/04/2022] [Indexed: 01/27/2023]
Abstract
During the 2015-2016 Zika Virus (ZIKV) epidemic in Brazil, the geographical distributions of ZIKV infection and microcephaly outbreaks did not align. This raised doubts about the virus as the single cause of the microcephaly outbreak and led to research hypotheses of alternative explanatory factors, such as environmental variables and factors, agrochemical use, or immunizations. We investigated context and the intermediate and structural determinants of health inequalities, as well as social environment factors, to determine their interaction with ZIKV-positive- and ZIKV-negative-related microcephaly. The results revealed the identification of 382 associations among 382 nonredundant variables of Zika surveillance, including multiple determinants of environmental public health factors and variables obtained from 5565 municipalities in Brazil. This study compared those factors and variables directly associated with microcephaly incidence positive to ZIKV and those associated with microcephaly incidence negative to ZIKV, respectively, and mapped them in case and control subnetworks. The subnetworks of factors and variables associated with low birth weight and birthweight where birth incidence served as an additional control were also mapped. Non-significant differences in factors and variables were observed, as were weights of associations between microcephaly incidence, both positive and negative to ZIKV, which revealed diagnostic inaccuracies that translated to the underestimation of the scope of the ZIKV outbreak. A detailed analysis of the patterns of association does not support a finding that vaccinations contributed to microcephaly, but it does raise concerns about the use of agrochemicals as a potential factor in the observed neurotoxicity arising from the presence of heavy metals in the environment and microcephaly not associated with ZIKV. Summary: A comparative network inferential analysis of the patterns of variables and factors associated with Zika virus infections in Brazil during 2015-2016 coinciding with a microcephaly epidemic identified multiple contributing determinants. This study advances our understanding of the cumulative interactive effects of exposures to chemical and non-chemical stressors in the built, natural, physical, and social environments on adverse pregnancy and health outcomes in vulnerable populations.
Collapse
Affiliation(s)
- Myriam Patricia Cifuentes
- Department of Mathematics, College of Sciences, Antonio Nariño University, Bogotá 111321, Colombia;
- Division of Environmental Health Sciences, College of Public Health, Ohio State University, Columbus, OH 43210, USA
| | | | - Ricardo Cifuentes
- School of Medicine and Health Sciences, Universidad Militar Nueva Granada, Bogotá 110111, Colombia;
| | - Noel Malod-Dognin
- Department of Computer Science, University College London, London WC1E 6BT, UK; (N.M.-D.); (S.W.); (N.P.)
| | - Sam Windels
- Department of Computer Science, University College London, London WC1E 6BT, UK; (N.M.-D.); (S.W.); (N.P.)
| | - Jose Fernando Valderrama
- Subdirectorate of Transmissible Diseases, Ministry of Health and Social Protection, Bogotá 110311, Colombia;
| | - Paul D. Juarez
- Department of Family and Community Medicine, Meharry Medical College, Nashville, TN 37208, USA; (P.D.J.); (W.I.)
| | - R. Burciaga Valdez
- Department of Family & Community Medicine, School of Medicine, University of New Mexico, Albuquerque, NM 87106, USA;
| | - Cynthia Colen
- Department of Sociology, College of Arts and Sciences, Ohio State University, Columbus, OH 43210, USA;
| | - Charles Phillips
- Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN 37996, USA;
| | - Aramandla Ramesh
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, TN 37208, USA;
| | - Wansoo Im
- Department of Family and Community Medicine, Meharry Medical College, Nashville, TN 37208, USA; (P.D.J.); (W.I.)
| | - Maureen Lichtveld
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA;
| | - Charles Mouton
- Department of Family Medicine, College of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Nataša Pržulj
- Department of Computer Science, University College London, London WC1E 6BT, UK; (N.M.-D.); (S.W.); (N.P.)
| | - Darryl B. Hood
- Division of Environmental Health Sciences, College of Public Health, Ohio State University, Columbus, OH 43210, USA
- Correspondence:
| |
Collapse
|
17
|
Thompson D, Guenther B, Manayani D, Mendy J, Smith J, Espinosa DA, Harris E, Alexander J, Vang L, Morello CS. Zika virus-like particle vaccine fusion loop mutation increases production yield but fails to protect AG129 mice against Zika virus challenge. PLoS Negl Trop Dis 2022; 16:e0010588. [PMID: 35793354 PMCID: PMC9292115 DOI: 10.1371/journal.pntd.0010588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 07/18/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus with maternal infection associated with preterm birth, congenital malformations, and fetal death, and adult infection associated with Guillain-Barré syndrome. Recent widespread endemic transmission of ZIKV and the potential for future outbreaks necessitate the development of an effective vaccine. We developed a ZIKV vaccine candidate based on virus-like-particles (VLPs) generated following transfection of mammalian HEK293T cells using a plasmid encoding the pre-membrane/membrane (prM/M) and envelope (E) structural protein genes. VLPs were collected from cell culture supernatant and purified by column chromatography with yields of approximately 1-2mg/L. To promote increased particle yields, a single amino acid change of phenylalanine to alanine was made in the E fusion loop at position 108 (F108A) of the lead VLP vaccine candidate. This mutation resulted in a modest 2-fold increase in F108A VLP production with no detectable prM processing by furin to a mature particle, in contrast to the lead candidate (parent). To evaluate immunogenicity and efficacy, AG129 mice were immunized with a dose titration of either the immature F108A or lead VLP (each alum adjuvanted). The resulting VLP-specific binding antibody (Ab) levels were comparable. However, geometric mean neutralizing Ab (nAb) titers using a recombinant ZIKV reporter were significantly lower with F108A immunization compared to lead. After virus challenge, all lead VLP-immunized groups showed a significant 3- to 4-Log10 reduction in mean ZIKV RNAemia levels compared with control mice immunized only with alum, but the RNAemia reduction of 0.5 Log10 for F108A groups was statistically similar to the control. Successful viral control by the lead VLP candidate following challenge supports further vaccine development for this candidate. Notably, nAb titer levels in the lead, but not F108A, VLP-immunized mice inversely correlated with RNAemia. Further evaluation of sera by an in vitro Ab-dependent enhancement assay demonstrated that the F108A VLP-induced immune sera had a significantly higher capacity to promote ZIKV infection in FcγR-expressing cells. These data indicate that a single amino acid change in the fusion loop resulted in increased VLP yields but that the immature F108A particles were significantly diminished in their capacity to induce nAbs and provide protection against ZIKV challenge. Zika virus (ZIKV) is transmitted by mosquitoes and is a serious health threat due to potential epidemic spread. Infection in adults may lead to Guillain-Barré syndrome, a neurological disorder, or may cause harm to a developing fetus resulting in preterm birth, fetal death, or devastating congenital malformations. There are currently no approved vaccines against ZIKV. We previously developed a lead candidate vaccine based on a virus-like particle (VLP) that was generated in tissue culture. This ZIKV shell is devoid of any viral genetic material. In previous studies, this lead VLP candidate generated neutralizing antibodies (nAbs) that recognized wild-type ZIKV and prevented viral replication in both mice and non-human primates. To increase production of the lead VLP candidate and decrease cost-of-goods, we introduced a single amino acid change, phenylalanine to alanine, in the envelope glycoprotein. This change resulted in a modest increase in VLP yield. However, this single amino acid change resulted in reduced induction of nAbs following immunization and no significant reduction of RNAemia following challenge compared to the lead candidate. The results of this study suggest this investigational vaccine candidate is not suitable for further vaccine development and that ZIKV VLP maturation may have an important role in protection.
Collapse
Affiliation(s)
- Danielle Thompson
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Ben Guenther
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Darly Manayani
- PaxVax Inc., San Diego, California, United States of America
| | - Jason Mendy
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Jonathan Smith
- PaxVax Inc., San Diego, California, United States of America
| | - Diego A. Espinosa
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, California, United States of America
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, California, United States of America
| | - Jeff Alexander
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
- PaxVax Inc., San Diego, California, United States of America
| | - Lo Vang
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | | |
Collapse
|
18
|
Interferon Lambda Signals in Maternal Tissues to Exert Protective and Pathogenic Effects in a Gestational Stage-Dependent Manner. mBio 2022; 13:e0385721. [PMID: 35471083 PMCID: PMC9239100 DOI: 10.1128/mbio.03857-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Interferon lambda (IFN-λ) (type III IFN) is constitutively secreted from human placental cells in culture and reduces Zika virus (ZIKV) transplacental transmission in mice. However, the roles of IFN-λ during healthy pregnancy and in restricting congenital infection remain unclear. Here, we used mice lacking the IFN-λ receptor (Ifnlr1-/-) to generate pregnancies lacking either maternal or fetal IFN-λ responsiveness and found that the antiviral effect of IFN-λ resulted from signaling exclusively in maternal tissues. This protective effect depended on gestational stage, as infection earlier in pregnancy (E7 rather than E9) resulted in enhanced transplacental transmission of ZIKV. In Ifnar1-/- dams, which sustain robust ZIKV infection, maternal IFN-λ signaling caused fetal resorption and intrauterine growth restriction. Pregnancy pathology elicited by poly(I·C) treatment also was mediated by maternal IFN-λ signaling, specifically in maternal leukocytes, and also occurred in a gestational stage-dependent manner. These findings identify an unexpected effect of IFN-λ signaling, specifically in maternal (rather than placental or fetal) tissues, which is distinct from the pathogenic effects of IFN-αβ (type I IFN) during pregnancy. These results highlight the complexity of immune signaling at the maternal-fetal interface, where disparate outcomes can result from signaling at different gestational stages. IMPORTANCE Pregnancy is an immunologically complex situation, which must balance protecting the fetus from maternal pathogens with preventing maternal immune rejection of non-self fetal and placental tissue. Cytokines, such as interferon lambda (IFN-λ), contribute to antiviral immunity at the maternal-fetal interface. We found in a mouse model of congenital Zika virus infection that IFN-λ can have either a protective antiviral effect or cause immune-mediated pathology, depending on the stage of gestation when IFN-λ signaling occurs. Remarkably, both the protective and pathogenic effects of IFN-λ occurred through signaling exclusively in maternal immune cells rather than in fetal or placental tissues or in other maternal cell types, identifying a new role for IFN-λ at the maternal-fetal interface.
Collapse
|
19
|
Block LN, Schmidt JK, Keuler NS, McKeon MC, Bowman BD, Wiepz GJ, Golos TG. Zika virus impacts extracellular vesicle composition and cellular gene expression in macaque early gestation trophoblasts. Sci Rep 2022; 12:7348. [PMID: 35513694 PMCID: PMC9072346 DOI: 10.1038/s41598-022-11275-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 04/13/2022] [Indexed: 11/26/2022] Open
Abstract
Zika virus (ZIKV) infection at the maternal-placental interface is associated with adverse pregnancy outcomes including fetal demise and pregnancy loss. To determine how infection impacts placental trophoblasts, we utilized rhesus macaque trophoblast stem cells (TSC) that can be differentiated into early gestation syncytiotrophoblasts (ST) and extravillous trophoblasts (EVT). TSCs and STs, but not EVTs, were highly permissive to productive infection with ZIKV strain DAK AR 41524. The impact of ZIKV on the cellular transcriptome showed that infection of TSCs and STs increased expression of immune related genes, including those involved in type I and type III interferon responses. ZIKV exposure altered extracellular vesicle (EV) mRNA, miRNA and protein cargo, including ZIKV proteins, regardless of productive infection. These findings suggest that early gestation macaque TSCs and STs are permissive to ZIKV infection, and that EV analysis may provide a foundation for identifying non-invasive biomarkers of placental infection in a highly translational model.
Collapse
Affiliation(s)
- Lindsey N. Block
- grid.14003.360000 0001 2167 3675Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1223 Capitol Ct., Madison, WI 53715-1299 USA ,grid.14003.360000 0001 2167 3675Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI USA ,grid.25879.310000 0004 1936 8972Present Address: University of Pennsylvania, Philadelphia, PA USA
| | - Jenna Kropp Schmidt
- grid.14003.360000 0001 2167 3675Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1223 Capitol Ct., Madison, WI 53715-1299 USA
| | - Nicholas S. Keuler
- grid.14003.360000 0001 2167 3675Department of Statistics, University of Wisconsin-Madison, Madison, WI USA
| | - Megan C. McKeon
- grid.14003.360000 0001 2167 3675Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI USA
| | - Brittany D. Bowman
- grid.14003.360000 0001 2167 3675Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1223 Capitol Ct., Madison, WI 53715-1299 USA ,grid.266813.80000 0001 0666 4105Present Address: University of Nebraska Medical Center, Omaha, NE USA
| | - Gregory J. Wiepz
- grid.14003.360000 0001 2167 3675Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1223 Capitol Ct., Madison, WI 53715-1299 USA
| | - Thaddeus G. Golos
- grid.14003.360000 0001 2167 3675Wisconsin National Primate Research Center, University of Wisconsin-Madison, 1223 Capitol Ct., Madison, WI 53715-1299 USA ,grid.14003.360000 0001 2167 3675Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI USA ,grid.14003.360000 0001 2167 3675Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI USA
| |
Collapse
|
20
|
Elgueta D, Murgas P, Riquelme E, Yang G, Cancino GI. Consequences of Viral Infection and Cytokine Production During Pregnancy on Brain Development in Offspring. Front Immunol 2022; 13:816619. [PMID: 35464419 PMCID: PMC9021386 DOI: 10.3389/fimmu.2022.816619] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/02/2022] [Indexed: 12/12/2022] Open
Abstract
Infections during pregnancy can seriously damage fetal neurodevelopment by aberrantly activating the maternal immune system, directly impacting fetal neural cells. Increasing evidence suggests that these adverse impacts involve alterations in neural stem cell biology with long-term consequences for offspring, including neurodevelopmental disorders such as autism spectrum disorder, schizophrenia, and cognitive impairment. Here we review how maternal infection with viruses such as Influenza A, Cytomegalovirus, and Zika during pregnancy can affect the brain development of offspring by promoting the release of maternal pro-inflammatory cytokines, triggering neuroinflammation of the fetal brain, and/or directly infecting fetal neural cells. In addition, we review insights into how these infections impact human brain development from studies with animal models and brain organoids. Finally, we discuss how maternal infection with SARS-CoV-2 may have consequences for neurodevelopment of the offspring.
Collapse
Affiliation(s)
- Daniela Elgueta
- Center for Integrative Biology, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Paola Murgas
- Center for Integrative Biology, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.,Escuela de Tecnología Médica, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.,Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Erick Riquelme
- Center for Integrative Biology, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.,Escuela de Tecnología Médica, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.,Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Guang Yang
- Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Alberta Children's Hospital Research Institute, Calgary, AB, Canada
| | - Gonzalo I Cancino
- Center for Integrative Biology, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.,Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| |
Collapse
|
21
|
Magalhães ICL, Souza PFN, Marques LEC, Girão NM, Araújo FMC, Guedes MIF. New insights into the recombinant proteins and monoclonal antibodies employed to immunodiagnosis and control of Zika virus infection: A review. Int J Biol Macromol 2022; 200:139-150. [PMID: 34998869 DOI: 10.1016/j.ijbiomac.2021.12.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 12/11/2022]
Abstract
An emergent positive-stranded RNA virus, transmitted by mosquitoes with its first case of vertical transmission confirmed in 2015 in Brazil. The Zika virus (ZIKV) fever has received particular attention, mainly related to neurological diseases such as microcephaly in newborns. However, the laboratory diagnosis for ZIKV still faces some challenges due to its cross-reactivity with other flaviviruses, requiring a correct and differential diagnosis, contributing to the good prognosis of patients, especially in pregnant women. Among these, for early diagnosis, the CDC considers the RT-PCR the gold standard, more sensitive and specific, but expensive. Serological tests for the diagnosis of ZIKV can also be found beyond the period when the viral components are detectable in the serum. Inputs to produce more sensitive and specific diagnostic kits and the possibility of viral detection in less invasive samples are among the objectives of recent research on ZIKV. This review outlines recent advances in developing recombinant antigen and antibody-based diagnostic tools for the main flaviviruses in Northeast Brazil, such as ZIKV and Dengue virus (DENV).
Collapse
Affiliation(s)
- Ilana C L Magalhães
- Biotechnology and Molecular Biology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil.
| | - Pedro F N Souza
- Department of Biochemistry and Molecular Biology, Laboratory of Plant Defense Proteins, Federal University of Ceara, Fortaleza, Brazil.
| | - Lívia E C Marques
- Biotechnology and Molecular Biology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil
| | - Nicolas M Girão
- Biotechnology and Molecular Biology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil
| | | | - Maria Izabel F Guedes
- Biotechnology and Molecular Biology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil
| |
Collapse
|
22
|
Megli CJ, Coyne CB. Infections at the maternal-fetal interface: an overview of pathogenesis and defence. Nat Rev Microbiol 2022; 20:67-82. [PMID: 34433930 PMCID: PMC8386341 DOI: 10.1038/s41579-021-00610-y] [Citation(s) in RCA: 148] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2021] [Indexed: 02/08/2023]
Abstract
Infections are a major threat to human reproductive health, and infections in pregnancy can cause prematurity or stillbirth, or can be vertically transmitted to the fetus leading to congenital infection and severe disease. The acronym 'TORCH' (Toxoplasma gondii, other, rubella virus, cytomegalovirus, herpes simplex virus) refers to pathogens directly associated with the development of congenital disease and includes diverse bacteria, viruses and parasites. The placenta restricts vertical transmission during pregnancy and has evolved robust mechanisms of microbial defence. However, microorganisms that cause congenital disease have likely evolved diverse mechanisms to bypass these defences. In this Review, we discuss how TORCH pathogens access the intra-amniotic space and overcome the placental defences that protect against microbial vertical transmission.
Collapse
Affiliation(s)
- Christina J Megli
- Division of Maternal-Fetal Medicine, Division of Reproductive Infectious Disease, Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine and the Magee Womens Research Institute, Pittsburgh, PA, USA.
| | - Carolyn B Coyne
- Department of Molecular Genetics and Microbiology and the Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA.
| |
Collapse
|
23
|
Oliveira-Filho EFD, Carneiro IO, Fischer C, Kühne A, Postigo-Hidalgo I, Ribas JRL, Schumann P, Nowak K, Gogarten JF, de Lamballerie X, Dantas-Torres F, Netto EM, Franke CR, Couacy-Hymann E, Leendertz FH, Drexler JF. Evidence against Zika virus infection of pets and peri-domestic animals in Latin America and Africa. J Gen Virol 2022; 103. [PMID: 35077341 PMCID: PMC8895617 DOI: 10.1099/jgv.0.001709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Decades after its discovery in East Africa, Zika virus (ZIKV) emerged in Brazil in 2013 and infected millions of people during intense urban transmission. Whether vertebrates other than humans are involved in ZIKV transmission cycles remained unclear. Here, we investigate the role of different animals as ZIKV reservoirs by testing 1723 sera of pets, peri-domestic animals and African non-human primates (NHP) sampled during 2013–2018 in Brazil and 2006–2016 in Côte d'Ivoire. Exhaustive neutralization testing substantiated co-circulation of multiple flaviviruses and failed to confirm ZIKV infection in pets or peri-domestic animals in Côte d'Ivoire (n=259) and Brazil (n=1416). In contrast, ZIKV seroprevalence was 22.2% (2/9, 95% CI, 2.8–60.1) in West African chimpanzees (Pan troglodytes verus) and 11.1% (1/9, 95% CI, 0.3–48.3) in king colobus (Colobus polycomos). Our results indicate that while NHP may represent ZIKV reservoirs in Africa, pets or peri-domestic animals likely do not play a role in ZIKV transmission cycles.
Collapse
Affiliation(s)
- Edmilson F. de Oliveira-Filho
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Carlo Fischer
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Arne Kühne
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ignacio Postigo-Hidalgo
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Peggy Schumann
- Labor Berlin, Charité Vivantes Services GmbH, Berlin, Germany
| | - Kathrin Nowak
- Epidemiology of Highly Pathogenic Microorganisms, Robert Koch Institute, Berlin, Germany
| | - Jan F. Gogarten
- Epidemiology of Highly Pathogenic Microorganisms, Robert Koch Institute, Berlin, Germany
- Viral Evolution, Robert Koch Institute, Berlin, Germany
- Applied Zoology and Nature Conservation, University of Greifswald, Greifswald, Germany
| | - Xavier de Lamballerie
- Unité des Virus Émergents (Aix-Marseille University, IRD 190, Inserm 1207, IHU Méditerranée Infection), Marseille, France
| | - Filipe Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife, Brazil
| | | | | | - Emmanuel Couacy-Hymann
- Laboratoire National d'Appui au Développement Agricole/Laboratoire Central de Pathologie Animale, Bingerville, Côte d'Ivoire
| | - Fabian H. Leendertz
- Helmholtz Institute for One Health, Greifswald, Germany
- Epidemiology of Highly Pathogenic Microorganisms, Robert Koch Institute, Berlin, Germany
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Sechenov University, Moscow, Russia
- German Centre for Infection Research (DZIF), associated partner site Charité, Berlin, Germany
| |
Collapse
|
24
|
Usman M, Hameed Y, Ahmad M, Jalil Ur Rehman, Ahmed H, Hussain MS, Asif R, Murtaza MG, Jawad MT, Iqbal MJ. Breast Cancer Risk and Human Papillomavirus Infection: A Bradford Hill Criteria Based Evaluation. Infect Disord Drug Targets 2022; 22:e200122200389. [PMID: 35048811 DOI: 10.2174/1573401318666220120105931] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/20/2021] [Accepted: 11/17/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND The association between human papillomavirus (HPV) and human breast cancer (BC) has already been thoroughly studied worldwide with contradictory findings. Although the researchers have tried to minimize the conflict using statistical meta-analysis, because of its shortcomings, there is still a need to evaluate the correlation between HPV and BC using any additional method. OBJECTIVES This study was launched to investigate the correlation between HPV and BC through the application of Bradford Hill criteria postulates. METHODS Population-wide studies associating HPV with BC were searched using the PubMed database. Then, the information of HPV burden in BC, normal/benign samples was analyzed, and ultimately Bradford Hill criteria postulates were applied on the collected evidence to explore the relationship between HPV and BC. In addition, to make the outcomes more authentic, we also reviewed the methodologies of previous studies to address the propensity of false results. RESULTS After a careful evaluation of the obtained data against major Bradford Hill criteria postulates, it was noted that all these postulates including strength, consistency, biological gradient, temporality, plausibility, experiment, specificity, and analogy were not fulfilled. CONCLUSION The results of the present study have failed to establish a casual association between HPV and BC rather suggested HPV as a cause-effective agent or at least a co-participant in the pathogenesis of BC. The weakness of association especially the low level of consistency across studies, and the lack of specificity of effect, there is a need for more experiments concerning Bradford Hill criteria postulates.
Collapse
Affiliation(s)
- Muhammad Usman
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Yasir Hameed
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Mukhtiar Ahmad
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Jalil Ur Rehman
- Department of Eastern Medicine, Qarshi University, Lahore, Pakistan
| | - Hamad Ahmed
- Department of Eastern Medicine, Government College University Faisalabad, Pakistan
| | - Muhammad Safdar Hussain
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Rizwan Asif
- Department of Microbiology, Government College University Faisalabad, Pakistan
| | | | | | | |
Collapse
|
25
|
van Zyl GU. New Technological Developments in Identification and Monitoring of New and Emerging Infections. ENCYCLOPEDIA OF INFECTION AND IMMUNITY 2022. [PMCID: PMC8291697 DOI: 10.1016/b978-0-12-818731-9.00094-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
26
|
Nunes PS, Guimarães RA, Martelli CMT, de Souza WV, Turchi MD. Zika virus infection and microcephaly: spatial analysis and socio-environmental determinants in a region of high Aedes aegypti infestation in the Central-West Region of Brazil. BMC Infect Dis 2021; 21:1107. [PMID: 34706662 PMCID: PMC8549329 DOI: 10.1186/s12879-021-06805-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/19/2021] [Indexed: 11/25/2022] Open
Abstract
Background More than 5 years after the Zika virus (ZIKV) epidemic, Zika infection remains a major concern in regions with high Aedes infestation. The objectives of this study were (i) to identify clusters of ZIKV infection and microcephaly, and/or central nervous system (CNS) alterations associated with congenital infection during the epidemic peak in 2016 and subsequently, in 2017 and 2018; (ii) to measure the non-spatial correlation between ZIKV infection and microcephaly and/or CNS alterations associated with congenital infection; and (iii) to analyse the sociodemographic/economic, health, and environmental determinants associated with the incidence of ZIKV in a region of high infestation by Aedes aegypti in the Central-West Region of Brazil. Methods This ecological study analysed 246 municipalities in the state of Goiás (6.9 million inhabitants). The data were obtained from the Information System for Notifiable Diseases (ZIKV cases) and the Public Health Event Registry (microcephaly and/or CNS alterations associated with congenital infection). Incidence rates and prevalence of ZIKA infection were smoothed by an empirical Bayesian estimator (LEbayes), producing the local empirical Bayesian rate (LEBR). In the spatial analysis, ZIKV infection and microcephaly cases were georeferenced by the municipality of residence for 2016 and grouped for 2017 and 2018. Global Moran's I and the Hot Spot Analysis tool (Getis-Ord Gi* statistics) were used to analyse the spatial autocorrelation and clusters of ZIKV infection and microcephaly, respectively. A generalised linear model from the Poisson family was used to assess the association between ecological determinants and the smoothing incidence rate of ZIKV infection. Results A total of 9892 cases of acute ZIKV infection and 121 cases of microcephaly were confirmed. The mean LEBR of the ZIKV infection in the 246 municipalities was 22.3 cases/100,000 inhabitants in 2016, and 10.3 cases/100,000 inhabitants in 2017 and 2018. The LEBR of the prevalence rate of microcephaly and/or CNS alterations associated with congenital infection was 7 cases/10,000 live births in 2016 and 2 cases/10,000 live births during 2017–2018. Hotspots of ZIKV infection and microcephaly cases were identified in the capital and neighbouring municipalities in 2016, with new clusters in the following years. In a multiple regression Poisson analysis, ZIKV infection was associated with higher population density, the incidence of dengue, Aedes larvae infestation index, and average rainfall. The important determinant of ZIKV infection incidence reduction was the increase in households attended by endemic disease control agents. Conclusions Our analyses were able to capture, in a more granular way, aspects that make it possible to inform public managers of the sentinel areas identified in the post-epidemic hotspots. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-021-06805-1.
Collapse
Affiliation(s)
- Patrícia Silva Nunes
- Federal Institute of Education, Science and Technology of Goiás, Goiânia, Brazil. .,Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil.
| | - Rafael Alves Guimarães
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil.,Faculty of Nursing, Federal University of Goiás, Goiânia, Brazil
| | | | | | - Marília Dalva Turchi
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil.
| |
Collapse
|
27
|
Nunes DADF, Santos FRDS, da Fonseca STD, de Lima WG, Nizer WSDC, Ferreira JMS, de Magalhães JC. NS2B-NS3 protease inhibitors as promising compounds in the development of antivirals against Zika virus: A systematic review. J Med Virol 2021; 94:442-453. [PMID: 34636434 DOI: 10.1002/jmv.27386] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/06/2021] [Accepted: 10/10/2021] [Indexed: 01/18/2023]
Abstract
Zika virus (ZIKV) infections are associated with severe neurological complications and are a global public health concern. There are no approved vaccines or antiviral drugs to inhibit ZIKV replication. NS2B-NS3 protease (NS2B-NS3 pro), which is essential for viral replication, is a promising molecular target for anti-ZIKV drugs. We conducted a systematic review to identify compounds with promising effects against ZIKV; we discussed their pharmacodynamic and pharmacophoric characteristics. The online search, performed using the PubMed/MEDLINE and SCOPUS databases, yielded 56 articles; seven relevant studies that reported nine promising compounds with inhibitory activity against ZIKV NS2B-NS3 pro were selected. Of these, five (niclosamide, nitazoxanide, bromocriptine, temoporfin, and novobiocin) are currently available on the market and have been tested for off-label use against ZIKV. The 50% inhibitory concentration values of these compounds for the inhibition of NS2B-NS3 pro ranged at 0.38-21.6 µM; most compounds exhibited noncompetitive inhibition (66%). All compounds that could inhibit the NS2B-NS3 pro complex showed potent in vitro anti-ZIKV activity with a 50% effective concentration ranging 0.024-50 µM. The 50% cytotoxic concentration of the compounds assayed using A549, Vero, and WRL-69 cell lines ranged at 0.6-1388.02 µM and the selectivity index was 3.07-1698. This review summarizes the most promising antiviral agents against ZIKV that have inhibitory activity against viral proteases.
Collapse
Affiliation(s)
- Damiana Antônia de Fátima Nunes
- Department of Health Sciences, Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, Minas Gerais, Brasil
| | - Felipe Rocha da Silva Santos
- Department of Health Sciences, Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, Minas Gerais, Brasil
| | - Sara Thamires Dias da Fonseca
- Department of Health Sciences, Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, Minas Gerais, Brasil
| | - William Gustavo de Lima
- Department of Health Sciences, Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, Minas Gerais, Brasil
| | | | - Jaqueline Maria Siqueira Ferreira
- Department of Health Sciences, Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, Minas Gerais, Brasil
| | - José Carlos de Magalhães
- Laboratory of Virology and Cellular Technology, Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, Ouro Branco, Minas Gerais, Brasil
| |
Collapse
|
28
|
Ding J, Aldo P, Roberts CM, Stabach P, Liu H, You Y, Qiu X, Jeong J, Maxwell A, Lindenbach B, Braddock D, Liao A, Mor G. Placenta-derived interferon-stimulated gene 20 controls ZIKA virus infection. EMBO Rep 2021; 22:e52450. [PMID: 34405956 PMCID: PMC8490983 DOI: 10.15252/embr.202152450] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 07/16/2021] [Accepted: 07/22/2021] [Indexed: 12/14/2022] Open
Abstract
Zika virus is a positive-sense single-stranded RNA virus, which can be transmitted across the placenta and has adverse effects on fetal development during pregnancy. The severity of these complications highlights the importance of prevention and treatment. However, no vaccines or drugs are currently available. In this study, we characterize the IFNβ-mediated anti-viral response in trophoblast cells in order to identify critical components that are necessary for the successful control of viral replication and determine whether components of the IFN-induced response can be used as a replacement therapy for ZIKA virus infection during pregnancy. We identify and characterize interferon-stimulated gene 20 (ISG20) as playing a central role in controlling Zika virus infection in trophoblast cells and successfully establish a recombinant ISG20-Fc protein that effectively decreases viral titers in vitro and in vivo by maintaining its exonuclease activity and displaying potential immune modulatory functions. Recombinant ISG20-Fc has thus the potential to be further developed as an anti-viral treatment against ZIKA viral infection in high-risk populations, particularly in pregnant women.
Collapse
Affiliation(s)
- Jiahui Ding
- C.S Mott center for Human Growth and DevelopmentDepartment of Obstetrics and GynecologyWayne State UniversityDetroitMIUSA
- Department of Obstetrics, Gynecology and Reproductive SciencesYale University School of MedicineNew HavenCTUSA
| | - Paulomi Aldo
- Department of Obstetrics, Gynecology and Reproductive SciencesYale University School of MedicineNew HavenCTUSA
| | - Cai M Roberts
- Department of Obstetrics, Gynecology and Reproductive SciencesYale University School of MedicineNew HavenCTUSA
| | - Paul Stabach
- Department of PathologyYale University School of MedicineNew HavenCTUSA
| | - Hong Liu
- Institute of Reproductive HealthCenter for Reproductive MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yuan You
- C.S Mott center for Human Growth and DevelopmentDepartment of Obstetrics and GynecologyWayne State UniversityDetroitMIUSA
| | - Xuemin Qiu
- Obstetrics and Gynecology Hospital of Fudan UniversityShanghaiChina
| | - Jiwon Jeong
- Massachusetts College of Pharmacy and Health SciencesBostonMAUSA
| | - Anthony Maxwell
- C.S Mott center for Human Growth and DevelopmentDepartment of Obstetrics and GynecologyWayne State UniversityDetroitMIUSA
| | - Brett Lindenbach
- Department of Microbial PathogenesisYale University School of MedicineNew HavenCTUSA
| | | | - Aihua Liao
- Institute of Reproductive HealthCenter for Reproductive MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Gil Mor
- C.S Mott center for Human Growth and DevelopmentDepartment of Obstetrics and GynecologyWayne State UniversityDetroitMIUSA
| |
Collapse
|
29
|
Kameda K, Kelly AH, Lezaun J, Löwy I. Imperfect diagnosis: The truncated legacies of Zika testing. SOCIAL STUDIES OF SCIENCE 2021; 51:683-706. [PMID: 34461777 PMCID: PMC8474320 DOI: 10.1177/03063127211035492] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
When the Zika virus burst onto the international scene in the second half of 2015, the development of diagnostic tools was seen as an urgent global health priority. Diagnostic capacity was restricted to a small number of reference laboratories, and none of the few available molecular or serological tests had been validated for extensive use in an outbreak setting. In the early weeks of the crisis, key funders stepped in to accelerate research and development efforts, and the WHO took responsibility for steering diagnostic standardization, a role it had successfully played during the West Africa Ebola virus outbreak. Yet when the WHO declared the end of the Zika Public Health Emergency of International Concern in November 2016, diagnostic capacity remained patchy, and few tools were available at the scale required in the countries that bore the brunt of the epidemic, particularly Brazil. This article analyses the limited impact of global R&D efforts on the availability of Zika diagnostic options where they were most needed and for those most vulnerable: women who might have been exposed to the virus during their pregnancy and children born with suspected congenital Zika syndrome. The truncated legacies of testing during the Zika crisis reveal some of the fault lines in the global health enterprise, particularly the limits of 'emergency R&D' to operate in geopolitical contexts that do not conform to the ideal type of a humanitarian crisis, or to tackle technical issues that are inextricably linked to domestic struggles over the scope and distribution of biological citizenship. Diagnostic shortcomings, we argue, lie at the heart of the stunning transformation, in less than two years, in the status of Zika: from international public health emergency to neglected disease.
Collapse
Affiliation(s)
- Koichi Kameda
- Institute for Research and
Innovation in Society (IFRIS), Paris, France
| | - Ann H Kelly
- Department of Global Health and
Social Medicine, King’s College London, London, UK
| | - Javier Lezaun
- Institute for Science, Innovation
and Society, University of Oxford, Oxford, UK
| | | |
Collapse
|
30
|
A Zika Endemic Model for the Contribution of Multiple Transmission Routes. Bull Math Biol 2021; 83:111. [PMID: 34581872 DOI: 10.1007/s11538-021-00945-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/15/2021] [Indexed: 12/12/2022]
Abstract
Zika virus disease is a viral disease primarily transmitted to humans through the bite of infected female mosquitoes. Recent evidence indicates that the virus can also be sexually transmitted in hosts and vertically transmitted in vectors. In this paper, we propose a Zika model with three transmission routes, that is, vector-borne transmission between humans and mosquitoes, sexual transmission within humans and vertical transmission within mosquitoes. The basic reproduction number [Formula: see text] is computed and shown to be a sharp threshold quantity. Namely, the disease-free equilibrium is globally asymptotically stable as [Formula: see text], whereas there exists a unique endemic equilibrium which is globally asymptotically stable as [Formula: see text]. The relative contributions of each transmission route on the reproduction number, and the short- and long-term host infections are analyzed. Numerical simulations confirm that vectorial transmission contributes the most to the initial and subsequent transmission. The role of sexual transmission in the early phase of a Zika outbreak is greater than the long term, while vertical transmission is the opposite. Reducing mosquito bites is the most effective measure in lowering the risk of Zika virus infection.
Collapse
|
31
|
Social determinants associated with Zika virus infection in pregnant women. PLoS Negl Trop Dis 2021; 15:e0009612. [PMID: 34329305 PMCID: PMC8323902 DOI: 10.1371/journal.pntd.0009612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/01/2021] [Indexed: 11/23/2022] Open
Abstract
This study aims to describe the sociodemographic determinants associated with exposure to Zika Virus (ZIKV) in pregnant women during the 2015–2016 epidemic in Salvador, Brazil. The Zika virus (ZIKV) epidemic in Brazil has intensified global concern about congenital defects associated with intrauterine exposure. Social determinants are factors that reinforce and contribute to the transmission and spread of ZIKV as well as other arboviruses like Dengue. We performed a cross-sectional study to describe the prevalence of ZIKV and the contribution of social determinants to transmission among pregnant women during the 2015–2016 ZIKV epidemic in Salvador, Brazil. We found that 61% of pregnant women were ZIKV seropositive. We also found that lower education level, food insecurity and lower maternal age were associated with higher ZIKV infection risk. These findings contribute to understanding the role of social determinants in ZIKV transmission, providing key social factors that can be combined with pre-existing tactics (vector control and environmental improvement) to create policies and interventions which reduce social inequalities and risk of infection in vulnerable populations like pregnant women.
Collapse
|
32
|
Biggs JR, Sy AK, Brady OJ, Kucharski AJ, Funk S, Tu YH, Reyes MAJ, Quinones MA, Jones-Warner W, Ashall J, Avelino FL, Sucaldito NL, Tandoc AO, Cutiongco-de la Paz E, Capeding MRZ, Padilla CD, Hibberd ML, Hafalla JCR. Serological Evidence of Widespread Zika Transmission across the Philippines. Viruses 2021; 13:1441. [PMID: 34452307 PMCID: PMC8402696 DOI: 10.3390/v13081441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 12/13/2022] Open
Abstract
Zika virus (ZIKV) exposure across flavivirus-endemic countries, including the Philippines, remains largely unknown despite sporadic case reporting and environmental suitability for transmission. Using laboratory surveillance data from 2016, 997 serum samples were randomly selected from suspected dengue (DENV) case reports across the Philippines and assayed for serological markers of short-term (IgM) and long-term (IgG) ZIKV exposure. Using mixture models, we re-evaluated ZIKV IgM/G seroprevalence thresholds and used catalytic models to quantify the force of infection (attack rate, AR) from age-accumulated ZIKV exposure. While we observed extensive ZIKV/DENV IgG cross-reactivity, not all individuals with active DENV presented with elevated ZIKV IgG, and a proportion of dengue-negative cases (DENV IgG-) were ZIKV IgG-positive (14.3%, 9/63). We identified evidence of long-term, yet not short-term, ZIKV exposure across Philippine regions (ZIKV IgG+: 31.5%, 314/997) which was geographically uncorrelated with DENV exposure. In contrast to the DENV AR (12.7% (95%CI: 9.1-17.4%)), the ZIKV AR was lower (5.7% (95%CI: 3-11%)) across the country. Our results provide evidence of widespread ZIKV exposure across the Philippines and suggest the need for studies to identify ZIKV infection risk factors over time to better prepare for potential future outbreaks.
Collapse
Affiliation(s)
- Joseph R. Biggs
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (W.J.-W.); (J.A.); (M.L.H.); (J.C.R.H.)
| | - Ava Kristy Sy
- Department of Virology, Research Institute for Tropical Medicine, Manila 1781, Philippines; (A.K.S.); (M.A.J.R.); (M.A.Q.); (A.O.T.)
- Dengue Study Group, Research Institute for Tropical Medicine, Manila 1781, Philippines;
| | - Oliver J. Brady
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (O.J.B.); (A.J.K.); (S.F.)
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Adam J. Kucharski
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (O.J.B.); (A.J.K.); (S.F.)
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Sebastian Funk
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (O.J.B.); (A.J.K.); (S.F.)
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Yun-Hung Tu
- Department of Molecular Parasitology and Tropical Diseases, Graduate Institute of Medical Sciences, Taipei Medical University, Taipei 11031, Taiwan;
| | - Mary Anne Joy Reyes
- Department of Virology, Research Institute for Tropical Medicine, Manila 1781, Philippines; (A.K.S.); (M.A.J.R.); (M.A.Q.); (A.O.T.)
- Dengue Study Group, Research Institute for Tropical Medicine, Manila 1781, Philippines;
| | - Mary Ann Quinones
- Department of Virology, Research Institute for Tropical Medicine, Manila 1781, Philippines; (A.K.S.); (M.A.J.R.); (M.A.Q.); (A.O.T.)
- Dengue Study Group, Research Institute for Tropical Medicine, Manila 1781, Philippines;
| | - William Jones-Warner
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (W.J.-W.); (J.A.); (M.L.H.); (J.C.R.H.)
| | - James Ashall
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (W.J.-W.); (J.A.); (M.L.H.); (J.C.R.H.)
| | - Ferchito L. Avelino
- Department of Health, Philippine Epidemiology Bureau, Manila 1003, Philippines; (F.L.A.); (N.L.S.)
| | - Nemia L. Sucaldito
- Department of Health, Philippine Epidemiology Bureau, Manila 1003, Philippines; (F.L.A.); (N.L.S.)
| | - Amado O. Tandoc
- Department of Virology, Research Institute for Tropical Medicine, Manila 1781, Philippines; (A.K.S.); (M.A.J.R.); (M.A.Q.); (A.O.T.)
| | - Eva Cutiongco-de la Paz
- Institute of Human Genetics, University of the Philippines, Manila 1000, Philippines; (E.C.-d.l.P.); (C.D.P.)
- Philippine Genome Centre, University of the Philippines, Manila 1101, Philippines
| | - Maria Rosario Z. Capeding
- Dengue Study Group, Research Institute for Tropical Medicine, Manila 1781, Philippines;
- Institute of Human Genetics, University of the Philippines, Manila 1000, Philippines; (E.C.-d.l.P.); (C.D.P.)
| | - Carmencita D. Padilla
- Institute of Human Genetics, University of the Philippines, Manila 1000, Philippines; (E.C.-d.l.P.); (C.D.P.)
- Philippine Genome Centre, University of the Philippines, Manila 1101, Philippines
| | - Martin L. Hibberd
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (W.J.-W.); (J.A.); (M.L.H.); (J.C.R.H.)
- Institute of Human Genetics, University of the Philippines, Manila 1000, Philippines; (E.C.-d.l.P.); (C.D.P.)
- Philippine Genome Centre, University of the Philippines, Manila 1101, Philippines
| | - Julius Clemence R. Hafalla
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; (W.J.-W.); (J.A.); (M.L.H.); (J.C.R.H.)
| |
Collapse
|
33
|
Cordeiro TAR, de Resende MAC, Moraes SCDS, Franco DL, Pereira AC, Ferreira LF. Electrochemical biosensors for neglected tropical diseases: A review. Talanta 2021; 234:122617. [PMID: 34364426 DOI: 10.1016/j.talanta.2021.122617] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/08/2021] [Accepted: 06/12/2021] [Indexed: 12/26/2022]
Abstract
A group of infectious and parasitic diseases with prevalence in tropical and subtropical regions of the planet, especially in places with difficult access, internal conflicts, poverty, and low visibility from the government and health agencies are classified as neglected tropical diseases. While some well-intentioned isolated groups are making the difference on a global scale, the number of new cases and deaths is still alarming. The development and employment of low-cost, miniaturized, and easy-to-use devices as biosensors could be the key to fast diagnosis in such areas leading to a better treatment to further eradication of such diseases. Therefore, this review contains useful information regarding the development of such devices in the past ten years (2010-2020). Guided by the updated list from the World Health Organization, the work evaluated the new trends in the biosensor field applied to the early detection of neglected tropical diseases, the efficiencies of the devices compared to the traditional techniques, and the applicability on-site for local distribution. So, we focus on Malaria, Chagas, Leishmaniasis, Dengue, Zika, Chikungunya, Schistosomiasis, Leprosy, Human African trypanosomiasis (sleeping sickness), Lymphatic filariasis, and Rabies. Few papers were found concerning such diseases and there is no available commercial device in the market. The works contain information regarding the development of point-of-care devices, but there are only at proof of concepts stage so far. Details of electrode modification and construction of electrochemical biosensors were summarized in Tables. The demand for the eradication of neglected tropical diseases is increasing. The use of biosensors is pivotal for the cause, but appliable devices are scarce. The information present in this review can be useful for further development of biosensors in the hope of helping the world combat these deadly diseases.
Collapse
Affiliation(s)
- Taís Aparecida Reis Cordeiro
- Institute of Science and Technology, Laboratory of Electrochemistry and Applied Nanotechnology, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Brazil
| | | | - Simone Cristina Dos Santos Moraes
- Group of Electrochemistry Applied to Polymers and Sensors - Multidisciplinary Group of Research, Science and Technology - Laboratory of Electroanalytic Applied to Biotechnology and Food Engineering - Institute of Chemistry, Federal University of Uberlândia, Patos de Minas, Brazil
| | - Diego Leoni Franco
- Group of Electrochemistry Applied to Polymers and Sensors - Multidisciplinary Group of Research, Science and Technology - Laboratory of Electroanalytic Applied to Biotechnology and Food Engineering - Institute of Chemistry, Federal University of Uberlândia, Patos de Minas, Brazil.
| | - Arnaldo César Pereira
- Department of Natural Sciences, Federal University of São João Del-Rei, São João Del-Rei, Brazil.
| | - Lucas Franco Ferreira
- Institute of Science and Technology, Laboratory of Electrochemistry and Applied Nanotechnology, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Brazil.
| |
Collapse
|
34
|
Gambino F, Tai W, Voronin D, Zhang Y, Zhang X, Shi J, Wang X, Wang N, Du L, Qiao L. A vaccine inducing solely cytotoxic T lymphocytes fully prevents Zika virus infection and fetal damage. Cell Rep 2021; 35:109107. [PMID: 33979612 PMCID: PMC8742672 DOI: 10.1016/j.celrep.2021.109107] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 03/20/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
As vaccine-induced non-neutralizing antibodies may cause antibody-dependent enhancement of Zika virus (ZIKV) infection, we test a vaccine that induces only specific cytotoxic T lymphocytes (CTLs) without specific antibodies. We construct a DNA vaccine expressing a ubiquitinated and rearranged ZIKV non-structural protein 3 (NS3). The protein is immediately degraded and processed in the proteasome for presentation via major histocompatibility complex (MHC) class I for CTL generation. We immunize Ifnar1-/- adult mice with the ubiquitin/NS3 vaccine, impregnate them, and challenge them with ZIKV. Our data show that the vaccine greatly reduces viral titers in reproductive organs and other tissues of adult mice. All mice immunized with the vaccine survived after ZIKV challenge. The vaccine remarkably reduces placenta damage and levels of pro-inflammatory cytokines, and it fully protects fetuses from damage. CD8+ CTLs are essential in protection, as demonstrated via depletion experiments. Our study provides a strategy to develop safe and effective vaccines against viral infections.
Collapse
Affiliation(s)
- Frank Gambino
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153, USA,These authors contributed equally
| | - Wanbo Tai
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA,These authors contributed equally
| | - Denis Voronin
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Xiujuan Zhang
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Juan Shi
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Xinyi Wang
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Ning Wang
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Lanying Du
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA,Senior author,Correspondence: (L.D.), (L.Q.)
| | - Liang Qiao
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153, USA,Senior author,Lead contact,Correspondence: (L.D.), (L.Q.)
| |
Collapse
|
35
|
Sié A, Hanefeld J, Chaponda M, Chico RM, LeDoare K, Mayaud P, Drexler JF, Jaenisch T. Congenital malformations in sub-Saharan Africa-warnings of a silent epidemic? THE LANCET. INFECTIOUS DISEASES 2021; 21:594-596. [PMID: 33773619 PMCID: PMC9760594 DOI: 10.1016/s1473-3099(21)00061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/27/2021] [Indexed: 01/25/2023]
Affiliation(s)
- Ali Sié
- National Institute of Public Health, Burkina Faso
| | - Johanna Hanefeld
- Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, UK,Zentrum Internationaler Gesundheitsschutz, Robert Koch Institute, Berlin 14195, Germany
| | | | - R Matthew Chico
- Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, UK
| | - Kirsty LeDoare
- Paediatric Infectious Diseases Research Group, St George's Medical School, London, UK
| | - Philippe Mayaud
- Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, UK
| | - Jan Felix Drexler
- Charité-Universitätsmedizin Berlin Universität Berlin, Humbolt-Universität zu Berlin, Berlin, Germany,Institute of Virology, Berlin, Germany
| | - Thomas Jaenisch
- Heidelberg Institute of Global Health (HIGH), Heidelberg University Hospital, Heidelberg, Germany,Center for Global Health, Colorado School of Public Health, Aurora, CO, USA
| |
Collapse
|
36
|
Why Did ZIKV Perinatal Outcomes Differ in Distinct Regions of Brazil? An Exploratory Study of Two Cohorts. Viruses 2021; 13:v13050736. [PMID: 33922578 PMCID: PMC8146858 DOI: 10.3390/v13050736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 12/26/2022] Open
Abstract
The Zika virus (ZIKV) epidemic in Brazil occurred in regions where dengue viruses (DENV) are historically endemic. We investigated the differences in adverse pregnancy/infant outcomes in two cohorts comprising 114 pregnant women with PCR-confirmed ZIKV infection in Rio de Janeiro, Southeastern Brazil (n = 50) and Manaus, in the north region of the country (n = 64). Prior exposure to DENV was evaluated through plaque reduction neutralizing antibody assays (PRNT 80) and DENV IgG serologies. Potential associations between pregnancy outcomes and Zika attack rates in the two cities were explored. Overall, 31 women (27%) had adverse pregnancy/infant outcomes, 27 in Rio (54%) and 4 in Manaus (6%), p < 0.001. This included 4 pregnancy losses (13%) and 27 infants with abnormalities at birth (24%). A total of 93 women (82%) had evidence of prior DENV exposure, 45 in Rio (90%) and 48 in Manaus (75%). Zika attack rates differed; the rate in Rio was 10.28 cases/10,000 and in Manaus, 0.6 cases/10,000, p < 0.001. Only Zika attack rates (Odds Ratio: 17.6, 95% Confidence Interval 5.6–55.9, p < 0.001) and infection in the first trimester of pregnancy (OR: 4.26, 95% CI 1.4–12.9, p = 0.011) were associated with adverse pregnancy and infant outcomes. Pre-existing immunity to DENV was not associated with outcomes (normal or abnormal) in patients with ZIKV infection during pregnancy.
Collapse
|
37
|
Mittal S, Federman HG, Sievert D, Gleeson JG. The Neurobiology of Modern Viral Scourges: ZIKV and COVID-19. Neuroscientist 2021; 28:438-452. [PMID: 33874789 DOI: 10.1177/10738584211009149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The interactions of viruses with the nervous system were thought to be well understood until the recent outbreaks of Zika and SARS-CoV-2. In this review, we consider these emerging pathogens, the range and mechanisms of the neurological disease in humans, and how the biomedical research enterprise has pivoted to answer questions about viral pathogenesis, immune response, and the special vulnerability of the nervous system. ZIKV stands out as the only new virus in a generation, associating with congenital brain defects, neurological manifestations of microcephaly in newborns, and radiculopathy in adults. COVID-19, the disease caused by SARS-CoV-2, has swept the planet in an unprecedented manner and is feared worldwide for its effect on the respiratory system, but recent evidence points to important neurological sequelae. These can include anosmia, vasculopathy, paresthesias, and stroke. Evidence of ZIKV and SARS-CoV-2 genetic material from neural tissue, and evidence of infection of neural cells, raises questions about how these emerging viruses produce disease, and where new therapies might emerge.
Collapse
Affiliation(s)
- Swapnil Mittal
- Department of Neurosciences and Pediatrics, University of California San Diego, La Jolla, CA, USA.,Rady Children's Institute of Genomic Medicine, San Diego, CA, USA
| | - Hannah G Federman
- Department of Neurosciences and Pediatrics, University of California San Diego, La Jolla, CA, USA.,Rady Children's Institute of Genomic Medicine, San Diego, CA, USA.,Department of Medicine, New Jersey Medical School, Center for Immunity and Inflammation, Rutgers University, Newark, NJ, USA
| | - David Sievert
- Department of Neurosciences and Pediatrics, University of California San Diego, La Jolla, CA, USA.,Rady Children's Institute of Genomic Medicine, San Diego, CA, USA
| | - Joseph G Gleeson
- Department of Neurosciences and Pediatrics, University of California San Diego, La Jolla, CA, USA.,Rady Children's Institute of Genomic Medicine, San Diego, CA, USA
| |
Collapse
|
38
|
Three-Year Clinical Follow-Up of Children Intrauterine Exposed to Zika Virus. Viruses 2021; 13:v13030523. [PMID: 33810110 PMCID: PMC8005078 DOI: 10.3390/v13030523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 02/01/2023] Open
Abstract
Congenital Zika virus (ZIKV) infection may present with a broad spectrum of clinical manifestations. Some sequelae, particularly neurodevelopmental problems, may have a later onset. We conducted a prospective cohort study of 799 high-risk pregnant women who were followed up until delivery. Eighty-three women and/or newborns were considered ZIKV exposed and/or infected. Laboratory diagnosis was made by polymerase chain reaction in the pregnant mothers and their respective newborns, as well as Dengue virus, Chikungunya virus, and ZIKV serology. Serology for toxoplasmosis, rubella, cytomegalovirus, herpes simplex virus, and syphilis infections were also performed in microcephalic newborns. The newborns included in the study were followed up until their third birthday. Developmental delay was observed in nine patients (13.2%): mild cognitive delay in three patients, speech delay in three patients, autism spectrum disorder in two patients, and severe neurological abnormalities in one microcephalic patient; sensorineural hearing loss, three patients and dysphagia, six patients. Microcephaly due to ZIKV occurred in three patients (3.6%). Clinical manifestations can appear after the first year of life in children infected/exposed to ZIKV, emphasizing the need for long-term follow-up.
Collapse
|
39
|
Vang L, Morello CS, Mendy J, Thompson D, Manayani D, Guenther B, Julander J, Sanford D, Jain A, Patel A, Shabram P, Smith J, Alexander J. Zika virus-like particle vaccine protects AG129 mice and rhesus macaques against Zika virus. PLoS Negl Trop Dis 2021; 15:e0009195. [PMID: 33711018 PMCID: PMC7990201 DOI: 10.1371/journal.pntd.0009195] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 03/24/2021] [Accepted: 02/02/2021] [Indexed: 11/30/2022] Open
Abstract
Background Zika virus (ZIKV), a mosquito-borne flavivirus, is a re-emerging virus that constitutes a public health threat due to its recent global spread, recurrent outbreaks, and infections that are associated with neurological abnormalities in developing fetuses and Guillain-Barré syndrome in adults. To date, there are no approved vaccines against ZIKV infection. Various preclinical and clinical development programs are currently ongoing in an effort to bring forward a vaccine for ZIKV. Methodology/Principle findings We have developed a ZIKV vaccine candidate based on Virus-Like-Particles (VLPs) produced in HEK293 mammalian cells using the prM (a precursor to M protein) and envelope (E) structural protein genes from ZIKV. Transient transfection of cells via plasmid and electroporation produced VLPs which were subsequently purified by column chromatography yielding approximately 2mg/L. Initially, immunogenicity and efficacy were evaluated in AG129 mice using a dose titration of VLP with and without Alhydrogel 2% (alum) adjuvant. We found that VLP with and without alum elicited ZIKV-specific serum neutralizing antibodies (nAbs) and that titers correlated with protection. A follow-up immunogenicity and efficacy study in rhesus macaques was performed using VLP formulated with alum. Multiple neutralization assay methods were performed on immune sera including a plaque reduction neutralization test, a microneutralization assay, and a Zika virus Renilla luciferase neutralization assay. All of these assays indicate that following immunization, VLP induces high titer nAbs which correlate with protection against ZIKV challenge. Conclusions/Significance These studies confirm that ZIKV VLPs could be efficiently generated and purified. Upon VLP immunization, in both mice and NHPs, nAb was induced that correlate with protection against ZIKV challenge. These studies support translational efforts in developing a ZIKV VLP vaccine for evaluation in human clinical trials. Zika virus (ZIKV) is a significant global health threat particularly due to the speed in which epidemics can occur. The resulting infections have been demonstrated to harm a developing fetus and, in some adults, be a co-factor for the development of Guillain-Barré syndrome. ZIKV is typically spread by the Aedes mosquito, but sexual transmission is also possible. We sought to develop a ZIKV prophylactic vaccine based on surface glycoproteins of the virus that would be devoid of any viral genetic material. This Virus-Like-Particle (VLP) was generated in vitro following introduction of plasmid DNA encoding Zika structural protein (prM-E) genes into mammalian cells. The aluminum-adjuvanted VLP induced nAbs in mice and nonhuman primates and protected against ZIKV challenge in vivo. These studies support the evaluation of this VLP candidate vaccine in human clinical trials.
Collapse
Affiliation(s)
- Lo Vang
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
- * E-mail:
| | | | - Jason Mendy
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Danielle Thompson
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Darly Manayani
- PaxVax Inc., San Diego, California, United States of America (PaxVax was acquired by Emergent BioSolutions Inc. Oct 2018)
| | - Ben Guenther
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Justin Julander
- Institute for Antiviral Research, Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - Daniel Sanford
- Battelle Biomedical Research Center, West Jefferson, Ohio, United States of America
| | - Amit Jain
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Amish Patel
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Paul Shabram
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
| | - Jonathan Smith
- PaxVax Inc., San Diego, California, United States of America (PaxVax was acquired by Emergent BioSolutions Inc. Oct 2018)
| | - Jeff Alexander
- Emergent BioSolutions Inc., Gaithersburg, Maryland, United States of America
- PaxVax Inc., San Diego, California, United States of America (PaxVax was acquired by Emergent BioSolutions Inc. Oct 2018)
| |
Collapse
|
40
|
Oidtman RJ, España G, Perkins TA. Co-circulation and misdiagnosis led to underestimation of the 2015-2017 Zika epidemic in the Americas. PLoS Negl Trop Dis 2021; 15:e0009208. [PMID: 33647014 PMCID: PMC7951986 DOI: 10.1371/journal.pntd.0009208] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/11/2021] [Accepted: 02/05/2021] [Indexed: 02/07/2023] Open
Abstract
During the 2015-2017 Zika epidemic, dengue and chikungunya-two other viral diseases with the same vector as Zika-were also in circulation. Clinical presentation of these diseases can vary from person to person in terms of symptoms and severity, making it difficult to differentially diagnose them. Under these circumstances, it is possible that numerous cases of Zika could have been misdiagnosed as dengue or chikungunya, or vice versa. Given the importance of surveillance data for informing epidemiological analyses, our aim was to quantify the potential extent of misdiagnosis during this epidemic. Using basic principles of probability and empirical estimates of diagnostic sensitivity and specificity, we generated revised estimates of reported cases of Zika that accounted for the accuracy of diagnoses made on the basis of clinical presentation with or without laboratory confirmation. Applying this method to weekly reported case data from 43 countries throughout Latin America and the Caribbean, we estimated that 944,700 (95% CrI: 884,900-996,400) Zika cases occurred when assuming all confirmed cases were diagnosed using molecular methods versus 608,400 (95% CrI: 442,000-821,800) Zika cases that occurred when assuming all confirmed cases were diagnosed using serological methods. Our results imply that misdiagnosis was more common in countries with proportionally higher reported cases of dengue and chikungunya, such as Brazil. Given that Zika, dengue, and chikungunya appear likely to co-circulate in the Americas and elsewhere for years to come, our methodology has the potential to enhance the interpretation of passive surveillance data for these diseases going forward. Likewise, our methodology could also be used to help resolve transmission dynamics of other co-circulating diseases with similarities in symptomatology and potential for misdiagnosis.
Collapse
Affiliation(s)
- Rachel J. Oidtman
- Department of Biological Sciences and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - Guido España
- Department of Biological Sciences and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - T. Alex Perkins
- Department of Biological Sciences and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, United States of America
| |
Collapse
|
41
|
Leone T, Coast E, Correa S, Wenham C. Web-based searching for abortion information during health emergencies: a case study of Brazil during the 2015/2016 Zika outbreak. Sex Reprod Health Matters 2021; 29:1883804. [PMID: 33599193 PMCID: PMC8009028 DOI: 10.1080/26410397.2021.1883804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Sexual and reproductive health needs and access are often neglected during health emergencies. The 2015/2016 Zika epidemic is an example of priorities shifting to the detriment of women's health needs. The internet is a key tool for abortion knowledge sharing and seeking in countries where abortion is not legally available and it is also a key resource for tele-health. Yet, we know very little about how people use the internet, and the type of information searched for, to access abortion information and services. The aim of this study is to analyse to what extent and how the internet was used as a resource for abortion information during the Zika outbreak and its aftermath in Brazil in 2015/2016. Using Google Trends and Analytics data, we analyse contextually-specific abortion searches using standardised terms that reflect the overall representation of searches at that time alongside weekly levels of Zika incidence. The results show a heightened use of combined search terms for abortion and Zika, as well as abortion and microcephaly, suggesting a rise in abortion information searching linked to the epidemic. These searches were highly correlated with the level of Zika incidence. This study confirms the use of the internet for information seeking during a public health emergency. It demonstrates the need for appropriate internet resources to improve access to abortion information, especially in countries where abortion is highly restricted and stigmatised.
Collapse
Affiliation(s)
- Tiziana Leone
- Associate Professor of Health and International Development, Department of International Development, London School of Economics, London, UK
| | - Ernestina Coast
- Professor of Health and International Development, Department of International Development, London School of Economics, London, UK
| | - Sonia Correa
- Co-Chair Sexuality and Policy Watch/Observatório de Sexualidade e Política - ABIA, Rio de Janeiro, Brazil
| | - Clare Wenham
- Assistant Professor of Global Health Policy, Department of Health Policy, London School of Economics, London, UK
| |
Collapse
|
42
|
Bayraktar Y, Özyılmaz A, Toprak M, Işık E, Büyükakın F, Olgun MF. Role of the Health System in Combating Covid-19: Cross-Section Analysis and Artificial Neural Network Simulation for 124 Country Cases. SOCIAL WORK IN PUBLIC HEALTH 2021; 36:178-193. [PMID: 33369535 DOI: 10.1080/19371918.2020.1856750] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In the fight against Covid-19, developed countries and developing countries diverge in success. This drew attention to the discussion of how different health systems and different levels of health spending are effective in combating Covid-19. In this study, the role of the health system in the fight against Covid-19 is discussed. In this context, the number of hospital beds, the number of doctors, life expectancy at 60, universal health service and the share of health expenditures in GDP were used as health indicators. In the study, firstly 2020 data was estimated by using the Artificial Neural Networks simulation method and this year was used in the analysis. The model, with the data of 124 countries, was estimated using the cross-sectional OLS regression method. The estimation results show that the number of hospital beds, number of doctors and life expectancy at the age of 60 have statistically significant and positive effects on the ratio of Covid-19 recovered/cases. Universal health service and share of health expenditures in GDP are not significant statistically on the cases and recovered. Hospital bed capacity is the most effective variable on the recovered/case ratio.
Collapse
Affiliation(s)
| | | | - Metin Toprak
- Economics, İstanbul Sabahattin Zaim University, İstanbul, Turkey
| | - Esme Işık
- Optician, Turgut Özal University, Malatya, Turkey
| | | | | |
Collapse
|
43
|
Maia AMPC, Azevedo CDSL, de Oliveira RDMAB, Barreto FKA, Rodrigues ASR, Simião AR, Gomes IP, Ribeiro EM, Cavalcanti LPDG. Neurological growth and development of children asymptomatic at birth whose mothers had Zika during pregnancy. Rev Soc Bras Med Trop 2021; 54:e01802020. [PMID: 33605376 PMCID: PMC7891566 DOI: 10.1590/0037-8682-0180-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 12/02/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Newborn who had Zika vírus but did not show microcephaly at birth may have neuropsychomotor development problems. We aimed to evaluate the developmental and anthropometric milestones of asymptomatic children whose mothers had Zika during pregnancy in Northeastern Brazil in 2015 and 2016. METHODS We conducted a descriptive cross-sectional case series study of children in Fortaleza born without microcephaly whose mothers had Zika during pregnancy. Home visits were undertaken to evaluate the developmental milestones and gather anthropometric data of the children and to conduct semi-structured interviews with the mothers to identify their socioeconomic and gestational profiles and assess the newborns after birth. RESULTS In total, 30 cases were identified. Of these, 17 children and their mothers participated in the study. The median age of the mothers at the time of delivery was 26 years. All were symptomatic, and TORCH was negative. At the time of the home visit, all had growth profiles suitable for their age. However, nearly all children (15/17, 88.2%) presented at least one developmental delay, considering their age group. CONCLUSIONS There were late changes in the neuropsychomotor development of children born to mothers who had Zika during pregnancy, suggesting the need for specialized medical follow-ups.
Collapse
Affiliation(s)
- Ana Maria Peixoto Cabral Maia
- Universidade Federal do Ceará, Programa de Pós-graduação em Saúde Coletiva, Fortaleza, CE, Brasil
- Secretaria de Saúde do Município de Fortaleza, Fortaleza, CE, Brasil
| | - Camila de Sousa Lins Azevedo
- Universidade Federal do Ceará, Programa de Pós-graduação em Saúde Coletiva, Fortaleza, CE, Brasil
- Secretaria de Saúde do Município de Fortaleza, Fortaleza, CE, Brasil
| | | | | | | | - Adriana Rocha Simião
- Universidade Federal do Ceará, Programa de Pós-graduação em Saúde Coletiva, Fortaleza, CE, Brasil
- Secretaria de Saúde do Estado do Ceará, Fortaleza, CE, Brasil
| | - Ileana Pitombeira Gomes
- Universidade Federal do Ceará, Programa de Pós-graduação em Saúde Coletiva, Fortaleza, CE, Brasil
| | - Erlane Marques Ribeiro
- Hospital Infantil Albert Sabin, Fortaleza, CE, Brasil
- Centro Universitário Christus, Faculdade de Medicina, Fortaleza, CE, Brasil
| | - Luciano Pamplona de Góes Cavalcanti
- Universidade Federal do Ceará, Programa de Pós-graduação em Saúde Coletiva, Fortaleza, CE, Brasil
- Centro Universitário Christus, Faculdade de Medicina, Fortaleza, CE, Brasil
- Universidade Federal do Ceará, Programa de Pós-graduação em Patologia, Fortaleza, CE, Brasil
| |
Collapse
|
44
|
Dussupt V, Modjarrad K, Krebs SJ. Landscape of Monoclonal Antibodies Targeting Zika and Dengue: Therapeutic Solutions and Critical Insights for Vaccine Development. Front Immunol 2021; 11:621043. [PMID: 33664734 PMCID: PMC7921836 DOI: 10.3389/fimmu.2020.621043] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 12/14/2020] [Indexed: 01/23/2023] Open
Abstract
The unprecedented 2015-2016 Zika outbreak in the Americas sparked global concern and drove the rapid deployment of vaccine and therapeutic countermeasures against this re-emerging pathogen. Alongside vaccine development, a number of potent neutralizing antibodies against Zika and related flaviviruses have been identified in recent years. High-throughput antibody isolation approaches have contributed to a better understanding of the B cell responses elicited following infection and/or vaccination. Structure-based approaches have illuminated species-specific and cross-protective epitopes of therapeutic value. This review will highlight previously described monoclonal antibodies with the best therapeutic potential against ZIKV and related flaviviruses, and discuss their implications for the rational design of better vaccine strategies.
Collapse
Affiliation(s)
- Vincent Dussupt
- Emerging Infectious Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Kayvon Modjarrad
- Emerging Infectious Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Shelly J. Krebs
- Emerging Infectious Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| |
Collapse
|
45
|
A single-dose live attenuated chimeric vaccine candidate against Zika virus. NPJ Vaccines 2021; 6:20. [PMID: 33514743 PMCID: PMC7846741 DOI: 10.1038/s41541-021-00282-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
The mosquito-borne Zika virus is an emerging pathogen from the Flavivirus genus for which there are no approved antivirals or vaccines. Using the clinically validated PDK-53 dengue virus vaccine strain as a backbone, we created a chimeric dengue/Zika virus, VacDZ, as a live attenuated vaccine candidate against Zika virus. VacDZ demonstrates key markers of attenuation: small plaque phenotype, temperature sensitivity, attenuation of neurovirulence in suckling mice, and attenuation of pathogenicity in interferon deficient adult AG129 mice. VacDZ may be administered as a traditional live virus vaccine, or as a DNA-launched vaccine that produces live VacDZ in vivo after delivery. Both vaccine formulations induce a protective immune response against Zika virus in AG129 mice, which includes neutralising antibodies and a strong Th1 response. This study demonstrates that VacDZ is a safe and effective vaccine candidate against Zika virus.
Collapse
|
46
|
Geographic distribution of live births and infant mortality from congenital anomalies in Brazil, 2012-2017. J Community Genet 2021; 12:377-386. [PMID: 33496933 DOI: 10.1007/s12687-021-00509-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 01/19/2021] [Indexed: 10/22/2022] Open
Abstract
In the 2010-2014 period, the mean prevalence of congenital anomalies (CA) in the world was estimated at 398/10,000 births. CA are an important cause of mortality, disability, and comorbidity. Thus, the present study aims to describe the geographical and temporal distributions of live births and infant mortality (IM) due CA (IM-CA) in Brazil, from 2012 to 2017. The data used in this study is available at the Department of Informatics of the Unified Health System (DATASUS). The prevalence of CA at birth was 81.67/10,000 (95% CI 80.46-82.88), and the IM-CA rate was 27.97/10,000 (95% CI 27.95-28.00) in the studied period. The five CA with the highest rates were polydactyly (9.66/10,000, 95% CI 6.10-9.82), Down syndrome (3.40/10,000, 95% CI 3.41-5.99), microcephaly (2.92/10,000, 95% CI 2.91-3.12), hydrocephalus (2.72/10,000, 95% CI 2.65-2.90), and spina bifida (2.44/10,000, 95% CI 2.43-2.64). São Paulo was the Brazilian state with the highest CA birth rate (119.3/10,000), and Amazonas was the state with the highest IM-CA rate (33.8/10,000). The description and data analyses such as those performed in this work are relevant for healthcare systems and can be very useful in the formulation of public health campaigns and policies, as well as informing and educating professionals and the population. The management of clinical actions should consider all social, economic, geographic, and epidemiological factors.
Collapse
|
47
|
Teltscher F, Bouvaine S, Gibson G, Dyer P, Guest J, Young S, Hopkins RJ. Understanding mosquito host-choice behaviour: a new and low-cost method of identifying the sex of human hosts from mosquito blood meals. Parasit Vectors 2021; 14:75. [PMID: 33482889 PMCID: PMC7825230 DOI: 10.1186/s13071-021-04577-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/01/2021] [Indexed: 12/03/2022] Open
Abstract
Background Mosquito-borne diseases are a global health problem, causing hundreds of thousands of deaths per year. Pathogens are transmitted by mosquitoes feeding on the blood of an infected host and then feeding on a new host. Monitoring mosquito host-choice behaviour can help in many aspects of vector-borne disease control. Currently, it is possible to determine the host species and an individual human host from the blood meal of a mosquito by using genotyping to match the blood profile of local inhabitants. Epidemiological models generally assume that mosquito biting behaviour is random; however, numerous studies have shown that certain characteristics, e.g. genetic makeup and skin microbiota, make some individuals more attractive to mosquitoes than others. Analysing blood meals and illuminating host-choice behaviour will help re-evaluate and optimise disease transmission models. Methods We describe a new blood meal assay that identifies the sex of the person that a mosquito has bitten. The amelogenin locus (AMEL), a sex marker located on both X and Y chromosomes, was amplified by polymerase chain reaction in DNA extracted from blood-fed Aedes aegypti and Anopheles coluzzii. Results AMEL could be successfully amplified up to 24 h after a blood meal in 100% of An. coluzzii and 96.6% of Ae. aegypti, revealing the sex of humans that were fed on by individual mosquitoes. Conclusions The method described here, developed using mosquitoes fed on volunteers, can be applied to field-caught mosquitoes to determine the host species and the biological sex of human hosts on which they have blood fed. Two important vector species were tested successfully in our laboratory experiments, demonstrating the potential of this technique to improve epidemiological models of vector-borne diseases. This viable and low-cost approach has the capacity to improve our understanding of vector-borne disease transmission, specifically gender differences in exposure and attractiveness to mosquitoes. The data gathered from field studies using our method can be used to shape new transmission models and aid in the implementation of more effective and targeted vector control strategies by enabling a better understanding of the drivers of vector-host interactions. ![]()
Collapse
Affiliation(s)
- Fiona Teltscher
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK.
| | - Sophie Bouvaine
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Gabriella Gibson
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Paul Dyer
- Anglia Ruskin University, East Road, Cambridge, CB1 1PT, UK
| | - Jennifer Guest
- Home Office, Lunar House, 40 Wellesley Road, Croydon, CR9 2BY, UK
| | - Stephen Young
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Richard J Hopkins
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| |
Collapse
|
48
|
Clustered rapid induction of apoptosis limits ZIKV and DENV-2 proliferation in the midguts of Aedes aegypti. Commun Biol 2021; 4:69. [PMID: 33452408 PMCID: PMC7810730 DOI: 10.1038/s42003-020-01614-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 12/15/2020] [Indexed: 11/29/2022] Open
Abstract
Inter-host transmission of pathogenic arboviruses such as dengue virus (DENV) and Zika virus (ZIKV) requires systemic infection of the mosquito vector. Successful systemic infection requires initial viral entry and proliferation in the midgut cells of the mosquito followed by dissemination to secondary tissues and eventual entry into salivary glands1. Lack of arbovirus proliferation in midgut cells has been observed in several Aedes aegypti strains2, but the midgut antiviral responses underlying this phenomenon are not yet fully understood. We report here that there is a rapid induction of apoptosis (RIA) in the Aedes aegypti midgut epithelium within 2 hours of infection with DENV-2 or ZIKV in both in vivo blood-feeding and ex vivo midgut infection models. Inhibition of RIA led to increased virus proliferation in the midgut, implicating RIA as an innate immune mechanism mediating midgut infection in this mosquito vector. Ayers et al. report rapid induction of apoptosis in the midgut of Aedes aegypti mosquitoes within 2 hours of infection by dengue and Zika viruses, and find that inhibiting apoptosis led to increased virus proliferation in the midgut. These results suggest rapid induction of apoptosis as an innate immune mechanism mediating midgut infection in this mosquito vector.
Collapse
|
49
|
Ogunlade ST, Meehan MT, Adekunle AI, Rojas DP, Adegboye OA, McBryde ES. A Review: Aedes-Borne Arboviral Infections, Controls and Wolbachia-Based Strategies. Vaccines (Basel) 2021; 9:32. [PMID: 33435566 PMCID: PMC7827552 DOI: 10.3390/vaccines9010032] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/28/2020] [Accepted: 01/05/2021] [Indexed: 12/31/2022] Open
Abstract
Arthropod-borne viruses (Arboviruses) continue to generate significant health and economic burdens for people living in endemic regions. Of these viruses, some of the most important (e.g., dengue, Zika, chikungunya, and yellow fever virus), are transmitted mainly by Aedes mosquitoes. Over the years, viral infection control has targeted vector population reduction and inhibition of arboviral replication and transmission. This control includes the vector control methods which are classified into chemical, environmental, and biological methods. Some of these control methods may be largely experimental (both field and laboratory investigations) or widely practised. Perceptively, one of the biological methods of vector control, in particular, Wolbachia-based control, shows a promising control strategy for eradicating Aedes-borne arboviruses. This can either be through the artificial introduction of Wolbachia, a naturally present bacterium that impedes viral growth in mosquitoes into heterologous Aedes aegypti mosquito vectors (vectors that are not natural hosts of Wolbachia) thereby limiting arboviral transmission or via Aedes albopictus mosquitoes, which naturally harbour Wolbachia infection. These strategies are potentially undermined by the tendency of mosquitoes to lose Wolbachia infection in unfavourable weather conditions (e.g., high temperature) and the inhibitory competitive dynamics among co-circulating Wolbachia strains. The main objective of this review was to critically appraise published articles on vector control strategies and specifically highlight the use of Wolbachia-based control to suppress vector population growth or disrupt viral transmission. We retrieved studies on the control strategies for arboviral transmissions via arthropod vectors and discussed the use of Wolbachia control strategies for eradicating arboviral diseases to identify literature gaps that will be instrumental in developing models to estimate the impact of these control strategies and, in essence, the use of different Wolbachia strains and features.
Collapse
Affiliation(s)
- Samson T. Ogunlade
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia; (M.T.M.); (A.I.A.); (O.A.A.); (E.S.M.)
- College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia
| | - Michael T. Meehan
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia; (M.T.M.); (A.I.A.); (O.A.A.); (E.S.M.)
| | - Adeshina I. Adekunle
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia; (M.T.M.); (A.I.A.); (O.A.A.); (E.S.M.)
| | - Diana P. Rojas
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia;
| | - Oyelola A. Adegboye
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia; (M.T.M.); (A.I.A.); (O.A.A.); (E.S.M.)
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia;
| | - Emma S. McBryde
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia; (M.T.M.); (A.I.A.); (O.A.A.); (E.S.M.)
- College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia
| |
Collapse
|
50
|
Congenital abnormalities associated with Zika virus infection-Dengue as potential co-factor? A systematic review. PLoS Negl Trop Dis 2021; 15:e0008984. [PMID: 33395432 PMCID: PMC7808571 DOI: 10.1371/journal.pntd.0008984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 01/14/2021] [Accepted: 11/12/2020] [Indexed: 11/21/2022] Open
Abstract
Zika virus (ZIKV) emerged in Brazil during 2013–2014 causing an epidemic of previously unknown congenital abnormalities. The frequency of severe congenital abnormalities after maternal ZIKV infection revealed an unexplained geographic variability, especially between the Northeast and the rest of Brazil. Several reasons for this variability have been discussed. Prior immunity against Dengue virus (DENV) affecting ZIKV seems to be the most likely explanation. Here we summarise the current evidence regarding this prominent co-factor to potentially explain the geographic variability. This systematic review followed the PRISMA guidelines. The search was conducted up to May 15th, 2020, focussing on immunological interactions from Zika virus with previous Dengue virus infections as potential teratogenic effect for the foetus. Eight out of 339 screened studies reported on the association between ZIKV, prior DENV infection and microcephaly, mostly focusing on antibody-dependent enhancement (ADE) as potential pathomechanism. Prior DENV infection was associated with enhancement for ZIKV infection and increased neurovirulence in one included in vitro study only. Interestingly, the seven in vivo studies exhibited a heterogeneous picture with three studies showing a protective effect of prior DENV infections and others no effect at all. According to several studies, socio-economic factors are associated with increased risk for microcephaly. Very few studies addressed the question of unexplained variability of infection-related microcephaly. Many studies focussed on ADE as mechanism without measuring microcephaly as endpoint. Interestingly, three of the included studies reported a protective effect of prior DENV infection against microcephaly. This systematic review strengthens the hypothesis that immune priming after recent DENV infection is the crucial factor for determining protection or enhancement activity. It is of high importance that the currently ongoing prospective studies include a harmonised assessment of the potential candidate co-factors. Despite the large volume of Zika virus (ZIKV)-related research, the difference in the frequency of ZIKV-related severe congenital abnormalities between Northeastern Brazil in the rest of Brazil and other locations has not been adequately explained. This systematic review summarizes the existing evidence for the role of prior Dengue virus (DENV) infections as co-factor to explain the variability in the frequency of ZIKV-related severe congenital abnormalities. Results differed significantly according to study type (e.g. in vitro versus in vivo studies), and no clear picture emerged with regard to prior DENV infections causing ZIKV-related severe congenital abnormalities. However, evidence from additional studies not included in this systematic review that focus on immunological interactions between DENV and ZIKV infections imply the potential that severe ZIKV disease is more frequent in those with prior DENV infections. Therefore, an assessment of background immunity against closely related viruses (e.g. the flavivirus family) needs to be included in future and ongoing longitudinal studies on ZIKV-related congenital abnormalities.
Collapse
|