The mosquito-borne viral disease dengue is a global public health problem causing a wide spectrum of clinical manifestations ranging from mild dengue fever to severe dengue with plasma leakage and bleeding which are often fatal. To date, there are no specific medications to treat dengue and prevent the risk of hemorrhage. Dengue is caused by one of four genetically related but antigenically distinct serotypes DENV-1-DENV-4. The growing burden of the four DENV serotypes has intensified both basic and applied research to better understand dengue physiopathology. Research has shown that the secreted soluble hexameric form of DENV nonstructural protein-1 (sNS1) plays a significant role in the pathogenesis of severe dengue. Here, we provide an overview of the current knowledge about the role of sNS1 in the immunopathogenesis of dengue disease. We discuss the potential use of sNS1 in future vaccine development and its potential to improve dengue vaccine efficiency, particularly against severe dengue illness.
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http://dx.doi.org/10.3390/vaccines9090946 | DOI Listing |
Microorganisms
December 2024
Coordination of Health Research, Mexican Institute of Social Security, Mexico City 06720, Mexico.
Background: Dengue is a viral disease transmitted by the mosquitoes , which is characterized by fever, myalgia and arthralgia. In some cases, it can be fatal. For many years, dengue fever has been endemic to Mexico; however, few studies have investigated the historical and current extents of dengue fever at the national level or considered the effects of variables such as temperature, precipitation and elevation on its occurrence.
View Article and Find Full Text PDFMicroorganisms
December 2024
Translational Health, Molecular Medicine Division, International Centre for Genetic Engineering & Biotechnology, New Delhi 110067, India.
Dengue virus (DENV) is transmitted by genus mosquitoes and is responsible for dengue fever (DF) and other severe diseases, posing a significant challenge to the global health system. Currently, anti-dengue pharmacological treatment options are not available. Earlier, we demonstrated that Sinococuline has potent anti-dengue activity and prevents virus infection.
View Article and Find Full Text PDFPathogens
December 2024
Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Suita 565-0871, Japan.
Antibody-dependent enhancement (ADE) is a phenomenon in which antibodies enhance subsequent viral infections rather than preventing them. Sub-optimal levels of neutralizing antibodies in individuals infected with dengue virus are known to be associated with severe disease upon reinfection with a different dengue virus serotype. For Severe Acute Respiratory Syndrome Coronavirus type-2 infection, three types of ADE have been proposed: (1) Fc receptor-dependent ADE of infection in cells expressing Fc receptors, such as macrophages by anti-spike antibodies, (2) Fc receptor-independent ADE of infection in epithelial cells by anti-spike antibodies, and (3) Fc receptor-dependent ADE of cytokine production in cells expressing Fc receptors, such as macrophages by anti-nucleocapsid antibodies.
View Article and Find Full Text PDFmedRxiv
December 2024
Allergy Immunology and Cell Biology Unit, Department of Immunology and Molecular Medicine, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
Background: Elderly individuals, those with comorbidities and pregnant women are at a higher risk of developing severe dengue and succumbing to their illness. However, an increased incidence of severe dengue and fatalities are seen in females of the reproductive age. As per vaginal (PV) bleeding is an important complication that has not been well characterized, we sought to determine the frequency, complications and disease outcomes in women who develop PV bleeding.
View Article and Find Full Text PDFOpen Forum Infect Dis
January 2025
Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, New York, USA.
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