Abstract：
:The immunoglobulin (Ig) plasma levels are known to be, at least partially, genetically regulated, but all the genes involved are not known. Interleukin-1 (IL-1) is a potent proinflammatory cytokine able to serve as an adjuvant for immune responses. IL-1alpha gene is polymorphic, and at least one of the polymorphisms has been identified in the 5' regulatory region of the promoter, a biallelic base exchange (C-->T) at position -889. We set out to study whether the IL-1alpha genotype might contribute to the genetic component seen in the steady-state antibody levels of healthy individuals. Four hundred healthy blood donors (218 males and 182 females) were genotyped, and the plasma levels of IgM, IgG as well as IgG subclasses were measured. An association was found between IgG3 plasma levels and the IL-1alpha genotype; the 1.1 homozygotes had increased IgG3 levels compared with the 1.2 heterozygotes (P < 0.001 in males and P = 0.04 in females, Mann-Whitney U-test). A similar significant association was also found between IgM plasma levels and the IL-1alpha genotype in males, but it was no longer present in females; the 1.1 homozygotes had higher IgM levels than the 2.2 homozygotes (P = 0.03, Mann-Whitney U-test). The data suggest that IL-1alpha-mediated signals are critical for IgG3 and IgM responses, which are induced by thymus-independent antigens and are important in activating complement.
journal_name
Scand J Immunoljournal_title
Scandinavian journal of immunologyauthors
Kilpinen S,Laine S,Hulkkonen J,Hurme Mdoi
10.1046/j.1365-3083.2003.01231.xkeywords:
subject
Has Abstractpub_date
2003-03-01 00:00:00pages
296-302issue
3eissn
0300-9475issn
1365-3083pii
1231journal_volume
57pub_type
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journal_title：Scandinavian journal of immunology
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journal_title：Scandinavian journal of immunology
pub_type： 杂志文章
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