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Applied and Environmental Microbiology, August 1998, p. 3118-3122, Vol. 64, No. 8
Service d'Hygiène,
Received 26 February 1998/Accepted 20 May 1998
Four methods of extraction and three methods of concentration of
three enteric viruses from mussels were comparatively evaluated by
reverse transcriptase PCR (RT-PCR). Shellfish were experimentally contaminated by immersion in seawater seeded with astrovirus, hepatitis
A virus, or poliovirus. Sixty-gram samples of mussel tissues were
processed by using borate buffer, glycine solution, saline beef, and
saline beef-Freon extraction methods. The viruses were concentrated by
precipitation with polyethylene glycol 6000 (PEG 6000) or PEG 8000 or
by organic flocculation. RT-PCR was performed with RNA extracts from
crude shellfish extracts and concentrates with and without Sephadex
LH20 filtration. The glycine solution and borate buffer extraction
methods resulted in significantly more RT-PCR-positive samples than the
saline beef extraction method. We assessed the efficiency of 20 combinations of extraction and concentration methods. The borate
buffer-organic flocculation, borate buffer-PEG 6000, and glycine
solution-PEG 6000 combinations gave RT-PCR-positive results for all 27 samples analyzed for the three viruses. Detoxification of the samples
by Sephadex LH20 filtration significantly decreased the efficiency of
RT-PCR virus detection.
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Reverse Transcriptase PCR Detection of Astrovirus, Hepatitis A
Virus, and Poliovirus in Experimentally Contaminated Mussels:
Comparison of Several Extraction and Concentration
Methods
*
Corresponding author. Mailing address: Service
d'Hygiène, Faculté de Médecine, 28 place Henri
Dunant, 63000 Clermont Fd Cedex, France. Phone: (33)4 73 60 80 07. Fax:
(33) 4 73 26 54 32. E-mail:
Ousmane.Traore{at}u-clermont1.fr.
Applied and Environmental Microbiology, August 1998, p. 3118-3122, Vol. 64, No. 8
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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