Respiratory syncytial virus (RSV) is the leading etiological agent of lower respiratory tract illness. However, efficacious vaccines or antiviral drugs for treating RSV infections are currently not available. Indeed, RSV depends on host cells to provide energy needed to produce progeny virions. Glycolysis is a series of oxidative reactions used to metabolize glucose and provide energy to host cells. Therefore, glycolysis may be helpful for RSV infection. In this study, we show that RSV increases glycolysis by inducing the stabilization, transcription, translation, and activation of hypoxia-inducible factor (HIF)-1α in infected cells, which is important for the production of progeny RSV virions. This study contributes to understanding the molecular mechanism by which HIF-1α-mediated glycolysis controls RSV infection and reveals an effective target for the development of highly efficient anti-RSV drugs.
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http://dx.doi.org/10.1128/mbio.02110-23 | DOI Listing |
Semin Respir Crit Care Med
December 2024
South Africa Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Lower respiratory tract infection (LRTI) is a major cause of neonatal morbidity and mortality worldwide. Maternal vaccination is an effective strategy in protecting young infants from LRTI, particularly in the first few months after birth when infant is most vulnerable, and most primary childhood vaccinations have not been administered. Additionally, maternal vaccination protects the mother from illness during pregnancy and the postnatal period, and the developing fetus from adverse outcomes such as stillbirth and prematurity.
View Article and Find Full Text PDFClin Pediatr (Phila)
December 2024
Division of Pediatric Critical Care Medicine, Department of Pediatrics, College of Medicine, University of Florida, Jacksonville, FL, USA.
This retrospective, multicenter observational study analyzed data from 257 children under 2 years old admitted with viral bronchiolitis to pediatric intensive care units (PICU) at Wolfson Children's Hospital and UFHealth Shands Children's Hospital from January 2020 to March 2022. The study explores viral etiologies and their associations with hospital length of stay (H-LOS), PICU length of stay (P-LOS), and severity markers and scores. Younger age was associated with longer H-LOS and P-LOS ( < .
View Article and Find Full Text PDFLancet Glob Health
January 2025
Centre for Neonatal and Paediatric Infection and Vaccine Institute, City St George's, University of London, London, UK; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda; UK Health Security Agency, Salisbury, UK.
Background: Immunisation in pregnancy against pertussis can reduce severe disease in infancy. There are few data on the safety and immunogenicity of vaccines given to pregnant women living with HIV and their infants. We aimed to describe the safety and immunogenicity of a tetanus-diphtheria-acellular pertussis (TdaP) vaccine containing genetically detoxified pertussis toxin given to pregnant women living with HIV and the effect of the vaccine on infant whole-cell pertussis vaccine responses.
View Article and Find Full Text PDFCurr Opin Infect Dis
December 2024
Division of Medical Sciences, Northern Ontario School of Medicine University, Thunder Bay, Ontario, Canada.
Purpose Of Review: To discuss recent findings on the global burden of respiratory tract infections in underprivileged populations, highlighting the critical role of socioeconomic factors in the incidence and severity of these diseases, with a particular focus on health disparities affecting Indigenous communities.
Recent Findings: Pulmonary tuberculosis and lower respiratory tract infections, particularly those caused by Streptococcus pneumoniae and respiratory syncytial virus (RSV), continue to disproportionally impact populations in low-income countries and Indigenous communities worldwide. Indigenous children <5 years old bear the highest global burden of RSV infection, reflecting persistent social inequalities between Indigenous and non-Indigenous populations.
Can J Public Health
December 2024
Infectious Diseases Division, Department of Pediatrics, CHU Sainte-Justine, Montreal, QC, Canada.
Objective: The COVID-19 pandemic disrupted the seasonal transmission pattern of respiratory syncytial virus (RSV), challenging the launch of palivizumab immunization campaigns. This study explored the performance of the moving epidemic method (MEM) to guide the launch of such campaigns.
Methods: Data were collected through a continuous RSV surveillance system (07/2013‒03/2022) in Québec, Canada.
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