Table 2

Potential biological markers of aging

MarkerEvidence
Inflammatory index [24]: the sum of the log of circulating IL6 and that of TNFR1 [24]Associated with risk of mortality and disability over 10 years in two large cohort studies
Redox status [25] assessed as D‐ROM and TTLAssociated with mortality and disability in two large cohort studies but not more sensitive than clinical evaluation
Epigenetic clock : AR‐DNAmAssociated with chronologic age and mortality in four cohort studies; association with mortality has been questioned [39]
Telomere length [29]It declines with chronologic age but has high degree of variability
Concentration of P16INK4a in T lymphocytes [30]Associated with chronologic age
Vitamin D concentration Inversely associated with mortality in cross‐sectional studies
MarkerEvidence
Inflammatory index [24]: the sum of the log of circulating IL6 and that of TNFR1 [24]Associated with risk of mortality and disability over 10 years in two large cohort studies
Redox status [25] assessed as D‐ROM and TTLAssociated with mortality and disability in two large cohort studies but not more sensitive than clinical evaluation
Epigenetic clock : AR‐DNAmAssociated with chronologic age and mortality in four cohort studies; association with mortality has been questioned [39]
Telomere length [29]It declines with chronologic age but has high degree of variability
Concentration of P16INK4a in T lymphocytes [30]Associated with chronologic age
Vitamin D concentration Inversely associated with mortality in cross‐sectional studies

Abbreviations: AR‐DNAm, age‐related DNA methylation; D‐ROMS, reactive oxygen metabolites; IL6, interleukin 6; TNFR1, tissue necrosis factor receptor 1; TTL, total thiols levels; TNFR1, tissue necrosis factor receptor 1.

Table 2

Potential biological markers of aging

MarkerEvidence
Inflammatory index [24]: the sum of the log of circulating IL6 and that of TNFR1 [24]Associated with risk of mortality and disability over 10 years in two large cohort studies
Redox status [25] assessed as D‐ROM and TTLAssociated with mortality and disability in two large cohort studies but not more sensitive than clinical evaluation
Epigenetic clock : AR‐DNAmAssociated with chronologic age and mortality in four cohort studies; association with mortality has been questioned [39]
Telomere length [29]It declines with chronologic age but has high degree of variability
Concentration of P16INK4a in T lymphocytes [30]Associated with chronologic age
Vitamin D concentration Inversely associated with mortality in cross‐sectional studies
MarkerEvidence
Inflammatory index [24]: the sum of the log of circulating IL6 and that of TNFR1 [24]Associated with risk of mortality and disability over 10 years in two large cohort studies
Redox status [25] assessed as D‐ROM and TTLAssociated with mortality and disability in two large cohort studies but not more sensitive than clinical evaluation
Epigenetic clock : AR‐DNAmAssociated with chronologic age and mortality in four cohort studies; association with mortality has been questioned [39]
Telomere length [29]It declines with chronologic age but has high degree of variability
Concentration of P16INK4a in T lymphocytes [30]Associated with chronologic age
Vitamin D concentration Inversely associated with mortality in cross‐sectional studies

Abbreviations: AR‐DNAm, age‐related DNA methylation; D‐ROMS, reactive oxygen metabolites; IL6, interleukin 6; TNFR1, tissue necrosis factor receptor 1; TTL, total thiols levels; TNFR1, tissue necrosis factor receptor 1.

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