title: No association between mannose-binding lectin deficiency and H1N1 2009 infection observed during the first season of this novel pandemic influenza virus.
abstract: Genetic variations in host immunity may influence susceptibility to novel infections like the recently emergent pandemic influenza virus. Prior studies demonstrated that mannose-binding lectin (MBL) inactivates influenza. Furthermore, MBL deficiency is common and appears to predispose to respiratory virus infections. Therefore, we studied whether MBL deficiency played a role in infection with the novel H1N1 2009 influenza strain in exposed health care workers. In a nested case-control study, we observed no association between phenotypic MBL deficiency, variously defined, and predisposition to H1N1 2009 influenza in 63 pairs of seropositive and seronegative participants. MBL appears to currently have little impact on innate immune responses to H1N1 2009 influenza.
authors.affiliation: Victorian Infectious Diseases Service, Royal Melbourne Hospital, Parkville, Victoria, Australia. damon.eisen@mh.org.au
authors.forename: Damon P
authors.initials: DP
authors.lastname: Eisen
authors.forename: Caroline
authors.initials: C
authors.lastname: Marshall
authors.forename: Melinda M
authors.initials: MM
authors.lastname: Dean
authors.forename: Joe
authors.initials: J
authors.lastname: Sasadeusz
authors.forename: Michael
authors.initials: M
authors.lastname: Richards
authors.forename: Kirsty
authors.initials: K
authors.lastname: Buising
authors.forename: Allen
authors.initials: A
authors.lastname: Cheng
authors.forename: Paul D R
authors.initials: PD
authors.lastname: Johnson
authors.forename: Ian G
authors.initials: IG
authors.lastname: Barr
authors.forename: Emma S
authors.initials: ES
authors.lastname: McBryde
mesh_terms: D000914:Antibodies, Viral / Q000097:blood; D001315:Australia; D016022:Case-Control Studies; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006801:Humans; D056724:Immunity, Humoral; D007113:Immunity, Innate / Q000235:genetics; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology* / Q000472:pathogenicity; D007251:Influenza, Human / Q000097:blood / Q000453:epidemiology* / Q000235:genetics* / Q000276:immunology; D037601:Mannose-Binding Lectin / Q000235:genetics*; D058873:Pandemics; D010564:Personnel, Hospital; D011110:Polymorphism, Genetic; D017384:Sequence Deletion / Q000235:genetics*
chemical_list: D000914:Antibodies, Viral; C445619:MBL2 protein, human; D037601:Mannose-Binding Lectin