Data/hora: 01/06/2024 14:37:09

Provedor de dados: | 5
País: | France
Título: | Distribution in Tissue and Seasonal Variation of Norovirus Genogroup I and II Ligands in Oysters
Autores: | Maalouf, Haifa; Zakhour, Maha; Le Pendu, Jacques; Le Saux, Jean-claude; Atmar, Robert L.; Le Guyader, Francoise S.
Data: | 2010-08
Ano: | 2010
Resumo: | Bivalve molluscan shellfish, such as oysters, filter large volumes of water as part of their feeding activities and are able to accumulate and concentrate different types of pathogens, particularly noroviruses, from fecal human pollution. Based on our previous observation of a specific binding of the Norwalk strain (prototype norovirus genogroup I) to the oyster digestive tract through an A-like carbohydrate structure indistinguishable from human blood group A antigen and on the large diversity between strains in terms of carbohydrate-binding specificities, we evaluated the different ligands implicated in attachment to oysters tissues of strains representative of two main genogroups of human norovirus. The GI.1 and GII.4 strains differed in that the latter recognized a sialic acid-containing ligand, present in all tissues, in addition to the A-like ligand of the digestive tract shared with the GI.1 strain. Furthermore, bioaccumulation experiments using wild-type or mutant GI.1 Viruslike particles showed accumulation in hemocytes largely, but not exclusively, based on interaction with the A-like ligand. Moreover, a seasonal effect on the expression of these ligands was detected, most visibly for the GI.1 strain, with a peak in late winter and spring, a period when GI strains are regularly involved in oyster-related outbreaks. These observations may explain some of the distinct epidemiological features of strains from different genogroups.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00011/12215/9045.pdf

DOI:10.1128/AEM.00148-10

Editor: | Amer Soc Microbiology
Relação: | http://archimer.ifremer.fr/doc/00011/12215/
Formato: | application/pdf
Fonte: | Applied And Environmental Microbiology (0099-2240) (Amer Soc Microbiology), 2010-08 , Vol. 76 , N. 16 , P. 5621-5630
Fonte: | 2010 American Society for Microbiology