Adsorption of norovirus and ostreid herpesvirus type 1 to polymer membranes for the development of passive samplers

Type Article
Date 2017-04
Language English
Author(s) Hubert Francoise1, Morga BenjaminORCID2, Renault Tristan3, Le Guyader Soizick1
Affiliation(s) 1 : IFREMER, LSEM SG2M, Lab Microbiol, Rue Ile Yeu,BP 21105, F-44311 Nantes 03, France.
2 : SG2M Stn La Tremblade, Lab Genet & Pathol Mollusques, La Tremblade, France.
3 : IFREMER, Dept Ressources Biol & Environm, Nantes, France.
Source Journal Of Applied Microbiology (1364-5072) (Wiley), 2017-04 , Vol. 122 , N. 4 , P. 1039-1047
DOI 10.1111/jam.13394
WOS© Times Cited 22
Keyword(s) norovirus, OsHV-1, Pacific oysters, passive samplers, seawater, sewage
Abstract Aims

This study was performed to develop passive sampling methodology for the detection of two viruses in seawater in the area of shellfish production, The Norovirus (NoV), a human pathogen implicated in gastroenteritis outbreaks linked to oyster consumption and the ostreid herpesvirus type 1 (OsHV-1) a virus associated with mass mortalities of Pacific oysters.
Methods and Results

Commercially membranes were tested for their capacity to adsorb virus: Zetapor, gauze, nylon, low density polyethylene (LDPE) and Polyvinylidene difluoride (PVDF). Laboratory exposures of membranes to contaminated water samples (stool, sewage, seawater) were performed. Our data shown that the amount of NoV GII genome per membrane measured with qRT-PCR increased with the time of exposure up to 24h, for all types of membranes except gauze. After 15 days of exposure, the amount of NoV GII per membrane continued to increase only for nylon and LDPE. The amount of OsHV-1 per zetapor membrane was significantly increased as soon as 4h of exposure, and after 24 h of exposure for all types of membranes. Exposure of membranes to serial dilutions of various samples revealed that the amount of NoV GII and OsHV-1 per membrane is significantly higher in diluted samples. The detection of NoV and OsHV-1 respectively with zetapor and PVDF membranes were found to be more efficient than direct analysis of sewage and sea water Conclusions: All membranes immerged in contaminated samples adsorbed NoV GII and OsHV-1. The amount of both virus increased with the time of exposure. Zetapor and PVDF membranes seems to be more adapted to NoV GII and OsHV-1 detection respectively.
Significance and Impact of the study

Membranes tested will be used as passive samplers to improve the detection of virus in oyster production areas. Also, passive samplers could be a valuable tool for microbiome analysis with New Generation Sequencing.
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Hubert Francoise, Morga Benjamin, Renault Tristan, Le Guyader Soizick (2017). Adsorption of norovirus and ostreid herpesvirus type 1 to polymer membranes for the development of passive samplers. Journal Of Applied Microbiology, 122(4), 1039-1047. Publisher's official version : , Open Access version :