Relation among mannose-binding lectin 2 genotype, β-cell autoantibodies, and risk for type 1 diabetes in Finnish children

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Aittoniemi, JKlin mikro Tampere, Finland (author)

Relation among mannose-binding lectin 2 genotype, β-cell autoantibodies, and risk for type 1 diabetes in Finnish children

Article/chapterEnglish2008

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Elsevier BV,2008
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LIBRIS-ID:oai:DiVA.org:liu-42374
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-42374URI
https://doi.org/10.1016/j.humimm.2008.01.007DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Mannose-binding lectin (MBL) is a key mediator of innate immunity, the insufficiency of which is caused by point mutations in the MBL2 gene. MBL insufficiency is associated with increased susceptibility to infections and certain autoimmune diseases, but its impact in the pathogenesis and risk of type 1 diabetes (T1D) is controversial. We investigated the significance of the MBL2 genotype on the risk of T1D in a Finnish study population comprising 470 diabetic children and 501 controls. Furthermore, the effect of MBL2 gene polymorphism on the emergence of β-cell autoantibodies in 289 unaffected children with human leukocyte antigen-conferred susceptibility to T1D was assessed. MBL genotype had no significant effect on the risk or onset age of T1D. However, children with the biallelic variant genotype reflecting total MBL deficiency tested positive more frequently for ≥3 autoantibodies compared with children with another genotype (odds ratio = 6.0, 95% confidence interval 1.3-28, p = 0.013). In conclusion, the MBL2 genotype did not affect susceptibility to T1D in children, and this finding does not support previous reports implicating a role of the MBL2 genotype as a factor predisposing to T1D. The association of the biallelic variant genotype with positivity for multiple autoantibodies suggests that intermolecular epitope spreading may be linked with impaired clearance of autoantigens as a result of MBL deficiency. © 2008 American Society for Histocompatibility and Immunogenetics.

Subject headings and genre

b-cell autoantibodies
Mannose-binding
lectin
Type 1 diabetes
MEDICINE
MEDICIN

Added entries (persons, corporate bodies, meetings, titles ...)

Turpeinen, HVirologen Turku, Finland (author)
Tiitanen, MNational Public Health Institute Helsinki, Finland (author)
Knip, MHospital for Children and Adolescents Helsinki, Finland (author)
Simell, OPaediatrics Turku, Finland (author)
Ilonen, JVirologen Turku, Finland (author)
Vaarala, Outi,1962-Linköpings universitet,Hälsouniversitetet,Pediatrik(Swepub:liu)outva41 (author)
Klin mikro Tampere, FinlandVirologen Turku, Finland (creator_code:org_t)

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In:Human Immunology: Elsevier BV69:2, s. 108-1110198-88591879-1166

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