Telomeres and the natural lifespan limit in humans

Troels Steenstrup, Jeremy D Kark, Simon Verhulst, Mikael Thinggaard, Jacob V B Hjelmborg, Christine Dalgård, Kirsten Ohm Kyvik, Lene Christiansen, Massimo Mangino, Timothy D Spector, Inge Petersen, Masayuki Kimura, Athanase Benetos, Carlos Labat, Ronit Sinnreich, Shih-Jen Hwang, Daniel Levy, Steven C Hunt, Annette L Fitzpatrick, Wei ChenGerald S Berenson, Michelangela Barbieri, Giuseppe Paolisso, Shahinaz M Gadalla, Sharon A Savage, Kaare Christensen, Anatoliy I Yashin, Konstantin G Arbeev, Abraham Aviv

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Abstrakt

An ongoing debate in demography has focused on whether the human lifespan has a maximal natural limit. Taking a mechanistic perspective, and knowing that short telomeres are associated with diminished longevity, we examined whether telomere length dynamics during adult life could set a maximal natural lifespan limit. We define leukocyte telomere length of 5 kb as the 'telomeric brink', which denotes a high risk of imminent death. We show that a subset of adults may reach the telomeric brink within the current life expectancy and more so for a 100-year life expectancy. Thus secular trends in life expectancy should confront a biological limit due to crossing the telomeric brink.

OriginalsprogEngelsk
TidsskriftAging
Vol/bind9
Udgave nummer4
Sider (fra-til)1130-1142
ISSN1945-4589
DOI
StatusUdgivet - 2017

Emneord

  • leukocytes
  • life-expectancy
  • longevity
  • maximal lifespan
  • sex

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