Fight Aging! Newsletter, June 19th 2017
This study is the first to show that downregulation of PAPP-A expression in adult mice can significantly extend life span.
Importantly, this beneficial longevity phenotype is distinct from the dwarfism of long-lived PAPP-A KO, Ames dwarf, Snell dwarf and growth hormone receptor (GHR) KO mice with germ-line mutations. Thus, downregulation of PAPP-A expression joins other treatment regimens, such as resveratrol, rapamycin and dietary restriction, which can extend life span when started in mice as adults. In a recent study, inducible knockdown of the GHR in young adult female mice increased maximal, but not median, life span. Tissue-specific PAPP-A KO models would provide insight into the tissues and organs that contribute to extended life span and healthspan.
Measurable Amyloid Buildup Occurs Significantly Before Alzheimer's Disease
https://www.fightaging.org/archives/2017/06/measurable-amyloid-buildup-occurs-significantly-before-alzheimers-disease/
Named and formally recognized age-related diseases are the late stages of processes of damage that start much earlier in life. So it is never a surprise to see that specific forms of damage strongly associated with any one specific age-related disease can be detected in smaller amounts earlier in old age, and that the people with more of that damage have a higher risk of later exhibiting the disease state. In the case of the research materials noted here, the disease is Alzheimer's, and the damage is accu...
Source: Fight Aging! - Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
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