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also described in [ 1], included 253 long lived individuals (median survival 100 years; age range: 89-114) and 341 genetically matched controls.
This suggests that the higher PARP-1 activity in leukocytes from long lived individuals is rather a consequence but not the cause of longevity.
The long lived individuals were enrolled by Elixir Pharmaceuticals between 2001 and 2003 using a protocol that matched the NECS and samples were genotyped using the Illumina 370 and 610 arrays.
The models additionally fitted random factors for year and individual to account for nonindependence among multiple observations (361 observations for 161 males, 83 of which bred more than once; see Table S2), especially among longer lived individuals.
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It appears that the long-lived individuals may experience lower levels of oxidative stress, allowing them to survive with less ROS-related enzymatic activity than the short-lived individuals.
Hence, even larger GWAS (>50 000 long-lived individuals) may be required to identify additional longevity loci, preferably in the most stringent phenotype, i.e. the oldest old.
From MFRTA three basic predictions can be made: long-lived individuals or species should produce fewer mitochondrial Reactive Oxygen Species (mtROS) than short-lived individuals or species; a decrease in mtROS production will increase lifespan; and an increase in mtROS production will decrease lifespan.
Centenarians escape the most common age-related diseases, which may be why they are exceptionally long-lived individuals [ 3].
In this case, the changes responsible for aging are supposed to be the same in the long-lived and short-lived individuals, only the reaction rates change.
Overall lifetime reproductive success of long-lived individuals in these different situations may or may not be similar; currently no data on this is available.
Two common APOE alleles are either significantly depleted (ε4 allele) or enriched (ε2 allele) in long-lived individuals as compared to controls.
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CEO of Professional Science Editing for Scientists @ prosciediting.com