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Sökning: WFRF:(Kockum K.) > Fink K.

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  • Longinetti, E., et al. (författare)
  • SARS-COV2 exposure rates and serological response of people living with MS
  • 2022
  • Ingår i: Multiple Sclerosis Journal. - : Sage Publications. - 1352-4585 .- 1477-0970. ; 28:Suppl. 3, s. 515-516
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Introduction: Some multiple sclerosis (MS) disease-modifying therapies (DMTs) are  associated with blunted humoral vaccination responses, but relevance for SARS-CoV-2 infection is unclear.Objectives: To determine  SARS-CoV-2  exposure  rates  and  formation of antibody memory among participants of the COMparison Between   All   immunoTherapies   for   MS   (COMBAT-MS;   NCT03193866) and the Immunomodulation and MS Epidemiology (IMSE) studies.Aim: To determine SARS-CoV2 serological response of people living with MS (pwMS).Methods: Using  a  multiplex  bead-based  assay  we  determined  SARS-CoV-2  spike  and  nucleocapsid  antibody  levels  in  3,723  pwMS   in   paired   serum   samples   (n=7,157)   donated   prior   (Results: Specificity and sensitivity of the assay for SARS-CoV-2 was  100%  and  99.7%,  respectively.  The  proportion  of  positive  samples for SARS-CoV-2 differed moderately across DMTs with the highest values among cladribine-treated (7.4%) and the lowest number  among  rituximab-treated  pwMS  (3.9%). Similarly,  the  proportion of positive cases not reported in the Swedish MS registry varied from 100% for cladribine to 33.3% among untreated pwMS.  Comparing levels  of  antibodies  titers  showed  that  levels  were lower among those treated with rituximab or fingolimod vs interferon treated pwMS. Point estimates indicated a similar trend comparing rituximab or fingolimod vs untreated pwMS.Conclusions: Overall  rates  of  SARS-CoV-2  antibody  positivity  after  the  first COVID-19  wave  differed  only  moderately  across  DMTs,  while  antibody  levels were  lower  with  rituximab  or  fingolimod  compared  to  interferon-treated pwMS.  This  indicates  quantitative  rather  than  qualitative  differences  in  the humoral  response to infection.
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  • Bomfim, I L, et al. (författare)
  • The immunogenetics of narcolepsy associated with A(H1N1)pdm09 vaccination (Pandemrix) supports a potent gene-environment interaction.
  • 2017
  • Ingår i: Genes and immunity. - : Springer Science and Business Media LLC. - 1476-5470 .- 1466-4879. ; 18, s. 75-81
  • Tidskriftsartikel (refereegranskat)abstract
    • The influenza A(H1N1)pdm09 vaccination campaign from 2009 to 2010 was associated with a sudden increase in the incidence of narcolepsy in several countries. Narcolepsy with cataplexy is strongly associated with the human leukocyte antigen (HLA) class II DQB1*06:02 allele, and protective associations with the DQB1*06:03 allele have been reported. Several non-HLA gene loci are also associated, such as common variants of the T-cell receptor-α (TRA), the purinergic receptor P2RY11, cathepsin H (CTSH) and TNFSF4/OX40L/CD252. In this retrospective multicenter study, we investigated if these predisposing gene loci were also involved in vaccination-associated narcolepsy. We compared HLA- along with single-nucleotide polymorphism genotypes for non-HLA regions between 42 Pandemrix-vaccinated narcolepsy cases and 1990 population-based controls. The class II gene loci associations supported previous findings. Nominal association (P-value<0.05) with TRA as well as suggestive (P-value<0.1) associations with P2RY11 and CTSH were found. These associations suggest a very strong gene-environment interaction, in which the influenza A(H1N1)pdm09 strain or Pandemrix vaccine can act as potent environmental triggers.Genes and Immunity advance online publication, 23 March 2017; doi:10.1038/gene.2017.1.
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