Biology (Dec 2024)

Immune-Inflammatory Response in Lifespan—What Role Does It Play in Extreme Longevity? A Sicilian Semi- and Supercentenarians Study

  • Giulia Accardi,
  • Anna Calabrò,
  • Rosalia Caldarella,
  • Calogero Caruso,
  • Marcello Ciaccio,
  • Marta Di Simone,
  • Mattia Emanuela Ligotti,
  • Serena Meraviglia,
  • Rosa Zarcone,
  • Giuseppina Candore,
  • Anna Aiello

DOI
https://doi.org/10.3390/biology13121010
Journal volume & issue
Vol. 13, no. 12
p. 1010

Abstract

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Studying models of healthy aging and exceptional longevity is crucial to understanding a possible longevity signature, as most show resistance to age-related diseases. In particular, semi- and supercentenarians are a highly selected group, having survived significant adversities, including the Spanish flu and COVID-19 pandemics, indicating distinctive immune system characteristics. This paper analyzes the inflammatory scores (INFLA-score, Systemic Inflammation Response Index (SIRI)) and Aging-Related Immune Phenotype (ARIP) indicators calculated from the dataset of the DESIGN project, including 249 participants aged 19–111 years, aiming to understand the immune-inflammatory (IMFLAM) role in achieving longevity. Statistical analyses, including linear regression and one-way ANOVA, were performed to explore the correlations between these parameters and age. Both INFLA-score and SIRI showed a significant increase with age. However, no statistical differences were found when comparing the values of semi- and supercentenarians to other age groups, which are similar to adults and lower than younger centenarians. Regarding ARIP values, it is noteworthy that when comparing the CD8+ Naïve/Effector scores between groups, no significant differences were observed between the semi- and supercentenarian group and the other groups. These results support the idea that the control of IMFLAM response can promote extreme longevity.

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