Search results for "enterovirus"
showing 6 items of 76 documents
Best practices, challenges and innovations in pediatrics in 2019
2020
AbstractThis paper runs through key progresses in epidemiology, pathomechanisms and therapy of various diseases in children that were issued in the Italian Journal of Pediatrics at the end of last year. Novel research and documents that explore areas such as allergy, critical care, endocrinology, gastroenterology, infectious diseases, neonatology, neurology, nutrition, and respiratory tract illnesses in children have been reported. These observations will help to control childhood illnesses.
Characterization of antiviral activity of green tea extract and applications for improving food safety
2021
Los norovirus, el virus de la hepatitis A y el virus de la hepatitis E son algunos de los principales riesgos sanitarios relacionados con el consumo de alimentos teniendo un alto impacto en la seguridad alimentaria y siendo responsables de diversas patologías en los consumidores (desde gastroenteritis leves hasta patologías de carácter serio como pueden ser hepatitis o incluso meningitis o encefalitis). Debido a que los virus entéricos se transmiten principalmente por la vía fecal-oral, su presencia puede darse en alimentos que se hayan contaminado de forma directa con material fecal o mediante agua contaminada. Los alimentos mayoritariamente implicados en este tipo de infecciones son los m…
Recombinant nanocapsid for targeted theranostic delivery
2017
Developments in diagnostic and therapeutic delivery are trending towards molecular level targeting with nano-platforms. Targeted delivery reduces generalized distribution by localizing diagnostic and/or therapeutic (theranostic) molecules to an intended target site. The first section of this thesis proposes Hepatitis E Virus (HEV) nanocapsids as a vector to stabilize and target theranostic delivery. Derived from the capsid protein of HEV, a feco-orally transmitted virus, HEV-like particles self-assemble in to non-infectious, nanocapsids that can withstand harsh protease and pH conditions in the mucosal system. The flexible nanocapsid surface protrusion domain is amenable to substantial modi…
Polyphenols Epigallocatechin Gallate and Resveratrol, and Polyphenol-Functionalized Nanoparticles Prevent Enterovirus Infection through Clustering an…
2021
To efficiently lower virus infectivity and combat virus epidemics or pandemics, it is important to discover broadly acting antivirals. Here, we investigated two naturally occurring polyphenols, Epigallocatechin gallate (EGCG) and Resveratrol (RES), and polyphenol-functionalized nanoparticles for their antiviral efficacy. Concentrations in the low micromolar range permanently inhibited the infectivity of high doses of enteroviruses (107 PFU/mL). Sucrose gradient separation of radiolabeled viruses, dynamic light scattering, transmission electron microscopic imaging and an in-house developed real-time fluorescence assay revealed that polyphenols prevented infection mainly through clustering of…
Experimental Evolution Reveals a Genetic Basis for Membrane-Associated Virus Release
2021
Many animal viruses replicate and are released from cells in close association to membranes. However, whether this is a passive process or is controlled by the virus remains poorly understood. Importantly, the genetic basis and evolvability of membrane-associated viral shedding have not been investigated. To address this, we performed a directed evolution experiment using coxsackievirus B3, a model enterovirus, in which we repeatedly selected the free-virion or the fast-sedimenting membrane-associated viral subpopulations. The virus responded to this selection regime by reproducibly fixing a series of mutations that altered the extent of membrane-associated viral shedding, as revealed by fu…
CVB3 VP1 interacts with MAT1 to inhibit cell proliferation by interfering with Cdk-activating kinase complex activity in CVB3-induced acute pancreati…
2021
Coxsackievirus B3 (CVB3) belongs to the genus Enterovirus of the family Picornaviridae and can cause acute acinar pancreatitis in adults. However, the molecular mechanisms of pathogenesis underlying CVB3-induced acute pancreatitis have remained unclear. In this study, we discovered that CVB3 capsid protein VP1 inhibited pancreatic cell proliferation and exerted strong cytopathic effects on HPAC cells. Through yeast two-hybrid, co-immunoprecipitation, and confocal microscopy, we show that Menage a trois 1 (MAT1), a subunit of the Cdk-Activating Kinase (CAK) complex involved in cell proliferation and transcription, is a novel interaction protein with CVB3 VP1. Moreover, CVB3 VP1 inhibited MAT…