Effect of interleukin-6 polymorphisms on human longevity: A systematic review and meta-analysis

Danilo Di Bona, Sonya Vasto, Cristiano Capurso, Lene Christiansen, Luca Deiana, Claudio Franceschi, Mikko Hurme, Eugenio Mocchegiani, Maeve Rea, Domenico Lio, Giuseppina Candore, Calogero Caruso

Research output: Contribution to journalArticle

Abstract

Several studies have assessed changes in frequency of -174 interleukin (IL)-6 single nucleotide polymorphism (SNP) with age. If IL-6 tracks with disability and age-related diseases, then there should be reduction, in the oldest old, of the frequency of homozgyous GG subjects, who produce higher IL-6 levels. However, discordant results have been obtained. To explore the relationship between this polymorphism and longevity, we analyzed individual data on long-living subjects and controls from eight case-control studies conducted in Europeans, using meta-analysis. There was no significant difference in the IL-6 genotype between the oldest old and controls (Odds Ratio [OR] = 0.96; 95% C.I.: 0.77-1.20; p = 0.71), but there was significant between-study heterogeneity (I2 = 55.5%). In a subgroup analyses when male centenarians from the three Italian studies were included, the frequency of the IL-6 -174 GG genotype was significantly lower than the other genotypes (OR = 0.49; 95% C.I.: 0.31-0.80; p = 0.004), with no evidence of heterogeneity (I2 = 0%). Our data supports a negative association between the GG genotype of IL-6 SNP and longevity in Italian centenarians, with males who carry the genotype being two times less likely to reach extreme old age compared with subjects carrying CC or CG genotypes. These findings were not replicated in other European groups suggesting a possible interaction between genetics, sex and environment in reaching longevity.

Original languageEnglish
Pages (from-to)36-42
Number of pages7
JournalAgeing Research Reviews
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 2009

Keywords

  • IL-6
  • Longevity
  • Meta-analysis
  • Polymorphisms

ASJC Scopus subject areas

  • Ageing
  • Biochemistry
  • Biotechnology
  • Molecular Biology
  • Neurology

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    Di Bona, D., Vasto, S., Capurso, C., Christiansen, L., Deiana, L., Franceschi, C., Hurme, M., Mocchegiani, E., Rea, M., Lio, D., Candore, G., & Caruso, C. (2009). Effect of interleukin-6 polymorphisms on human longevity: A systematic review and meta-analysis. Ageing Research Reviews, 8(1), 36-42. https://doi.org/10.1016/j.arr.2008.09.001