Your browser doesn't support javascript.
loading
A/H1N1 hemagglutinin antibodies show comparable affinity in vaccine-related Narcolepsy type 1 and control and are unlikely to contribute to pathogenesis.
Lind, Alexander; Marzinotto, Ilaria; Brigatti, Cristina; Ramelius, Anita; Piemonti, Lorenzo; Lampasona, Vito.
Afiliação
  • Lind A; Department of Clinical Sciences, Clinical Research Center (CRC), Skåne University Hospital SUS, Lund University, Malmö, Sweden.
  • Marzinotto I; San Raffaele Diabetes Research Institute, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
  • Brigatti C; San Raffaele Diabetes Research Institute, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
  • Ramelius A; Department of Clinical Sciences, Clinical Research Center (CRC), Skåne University Hospital SUS, Lund University, Malmö, Sweden.
  • Piemonti L; San Raffaele Diabetes Research Institute, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
  • Lampasona V; San Raffaele Diabetes Research Institute, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy. lampasona.vito@hsr.it.
Sci Rep ; 11(1): 4063, 2021 02 18.
Article em En | MEDLINE | ID: mdl-33603024
An increased incidence of narcolepsy type 1 (NT1) was observed in Scandinavia following the 2009-2010 influenza Pandemrix vaccination. The association between NT1 and HLA-DQB1*06:02:01 supported the view of the vaccine as an etiological agent. A/H1N1 hemagglutinin (HA) is the main antigenic determinant of the host neutralization antibody response. Using two different immunoassays, the Luciferase Immunoprecipitation System (LIPS) and Radiobinding Assay (RBA), we investigated HA antibody levels and affinity in an exploratory and in a confirmatory cohort of Swedish NT1 patients and healthy controls vaccinated with Pandemrix. HA antibodies were increased in NT1 patients compared to controls in the exploratory (LIPS p = 0.0295, RBA p = 0.0369) but not in the confirmatory cohort (LIPS p = 0.55, RBA p = 0.625). HA antibody affinity, assessed by competition with Pandemrix vaccine, was comparable between patients and controls (LIPS: 48 vs. 39 ng/ml, p = 0.81; RBA: 472 vs. 491 ng/ml, p = 0.65). The LIPS assay also detected higher HA antibody titres as associated with HLA-DQB1*06:02:01 (p = 0.02). Our study shows that following Pandemrix vaccination, HA antibodies levels and affinity were comparable NT1 patients and controls and suggests that HA antibodies are unlikely to play a role in NT1 pathogenesis.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Vacinas contra Influenza / Glicoproteínas de Hemaglutininação de Vírus da Influenza / Anticorpos Antivirais / Afinidade de Anticorpos / Narcolepsia Tipo de estudo: Etiology_studies / Observational_studies / Risk_factors_studies Limite: Adolescent / Adult / Aged / Child / Humans / Middle aged Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Vacinas contra Influenza / Glicoproteínas de Hemaglutininação de Vírus da Influenza / Anticorpos Antivirais / Afinidade de Anticorpos / Narcolepsia Tipo de estudo: Etiology_studies / Observational_studies / Risk_factors_studies Limite: Adolescent / Adult / Aged / Child / Humans / Middle aged Idioma: En Ano de publicação: 2021 Tipo de documento: Article