Relationship between plasma ghrelin, insulin, leptin, interleukin 6, adiponectin, testosterone and longevity in the Baltimore Longitudinal Study of Aging

Sari Stenholm, E. Jeffrey Metter, George S. Roth, Donald K. Ingram, Julie A. Mattison, Dennis D. Taub, Luigi Ferrucci

Abstract

Background and aims: Caloric restriction (CR) is the most robust and reproducible intervention for slowing aging, and maintaining health and vitality in animals. Previous studies found that CR is associated with changes in specific biomarkers in monkeys that were also associated with reduced risk of mortality in healthy men. In this study we examine the association between other potential biomarkers related to CR and extended lifespan in healthy humans. Methods: Based on the Baltimore Longitudinal Study of Aging, "long-lived" participants who survived to at least 90 years of age (n=41, cases) were compared with "short-lived" participants who died between 72-76 years of age (n=31, controls) in the nested case control study. Circulating levels of ghrelin, insulin, leptin, interleukin 6, adiponectin and testosterone were measured from samples collected between the ages 58 to 70 years. Baseline differences between groups were examined with t-test or Wilcoxon test, and mixed effects general linear model was used for a logistic model to differentiate the two groups with multiple measurements on some subjects. Results: At the time of biomarkers evaluation (58-70 yrs), none of the single biomarker levels was significantly different between the two groups. However, after combining information from multiple biomarkers by adding the z-transformed values, the global score differentiated the long- and short-lived participants (p=0.05). Conclusions: In their sixties, long-lived and short-lived individuals do not differ in biomarkers that have been associated with CR in animals. However, difference between the groups was only obtained when multiple biomarker dysregulation was considered.

Original languageEnglish (US)
Pages (from-to)153-158
Number of pages6
JournalAging clinical and experimental research
Volume23
Issue number2
Publication statusPublished - Apr 2011
Externally publishedYes

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Keywords

  • Aging
  • Biomarkers
  • Caloric restriction
  • Longevity

ASJC Scopus subject areas

  • Aging
  • Geriatrics and Gerontology

Cite this

Stenholm, S., Metter, E. J., Roth, G. S., Ingram, D. K., Mattison, J. A., Taub, D. D., & Ferrucci, L. (2011). Relationship between plasma ghrelin, insulin, leptin, interleukin 6, adiponectin, testosterone and longevity in the Baltimore Longitudinal Study of Aging. Aging clinical and experimental research, 23(2), 153-158.