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Journal of Virology, December 2005, p. 15351-15355, Vol. 79, No. 24
0022-538X/05/$08.00+0 doi:10.1128/JVI.79.24.15351-15355.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
A) in the Human Secretor (FUT2) Gene Provides Resistance to Symptomatic Norovirus (GGII) Infections
Ammi Grahn,2,
Kjell-Olof Hedlund,3
Hugo Johansson,4
Christer Wahlfrid,5
Göran Larson,2 and
Lennart Svensson6*
Departments of Virology,1 Bacteriology, Swedish Institute for Infectious Disease Control, Solna,3 Department of Clinical Chemistry, and Transfusion Medicine, Sahlgrenska University Hospital, Göteborg,2 Hospital Infection Control Unit, Clinical Microbiology and Immunology,4 Department of Medicine, University of Lund, Lund,5 Division of Molecular Virology, Medical Faculty, University of Linköping, 581 85 Linköping, Sweden6
Received 10 May 2005/ Accepted 21 September 2005
Noroviruses (formerly Norwalk-like viruses) are a major cause of acute gastroenteritis worldwide and are associated with a significant number of nosocomial and food-borne outbreaks. In this study we show that the human secretor FUT2 gene, which codes for an
(1,2)-fucosyltransferase synthesizing the H-type 1 antigen in saliva and mucosa, is associated with susceptibility to norovirus infections. Allelic polymorphism characterization at nucleotide 428 for symptomatic (n = 53) and asymptomatic (n = 62) individuals associated with nosocomial and sporadic norovirus outbreaks revealed that homozygous nonsense mutation (428G
A) in FUT2 segregated with complete resistance for the disease. Of all symptomatic individuals, 49% were homozygous (SeSe) and 51% heterozygous (Sese428) secretors, and none were secretor negative (se428se428), in contrast to 20% nonsecretors (se428se428) among Swedish blood donors (n = 104) (P < 0.0002) and 29% for asymptomatic individuals associated with nosocomial outbreaks (P < 0.00001). Furthermore, saliva from secretor-positive and symptomatic patients but not from secretor-negative and asymptomatic individuals bound the norovirus strain responsible for that particular outbreak. This is the first report showing that the FUT2 nonsecretor (se428se428) genotype is associated with resistance to nosocomial and sporadic outbreaks with norovirus.
These two authors contributed equally to this work.
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