Spermidine and spermine are enriched in whole blood of nona/centenarians

Home of Kyle J. Norton for The Better of Living & Living Health Human aging is a biological process, no one can stop, but delay it. It is possible that one person looks younger than his or her biological if one engages in healthy living life style and eating healthily by increasing the intake of good healthy food such as whole grain, fruits, vegetables, beans and legumes, etc. and reducing the consumption of harmful foods, such as saturated fat, trans fat, artificial ingredients, etc.
Spermidine is a naturally occurring polyamine involved in multiple biological processes, including DNA metabolism, autophagy and aging.
Spermidine and spermine are enriched in whole blood of nona/centenarians
Polyamines (putrescine, spermidine, and spermine) are a family of molecules that derive from ornithine through a decarboxylation process. They are essential for cell growth and proliferation, stabilization of negative charges of DNA, RNA transcription, translation, and apoptosis. In a cross-sectional observational study to determine whole-blood polyamines levels from 78 sex-matched unrelated individuals divided into three age groups: Group 1 (31-56 years, n=26, mean age 44.6±6.07), group 2 (60-80 years, n=26, mean age 68.7±6.07), and group 3 (90-106 years, n=26, mean age 96.5±4.59). The total content of polyamines is significantly lower in groups 2 and 3 compared to group 1 (p=3.6×10(-12)), indicated that the total content of polyamines is significantly lower in groups 2 and 3 compared to group 1 (p=3.6×10(-12)). Interestingly, this reduction is mainly attributable to the lower putrescine content. Group 2 displays the lowest levels of spermidine and spermine. On the other hand, nona/centenarians (group 3) display a significantly higher median relative percentage content of spermine with respect to total polyamines, compared to the other groups (13.2% vs. 14.1% vs. 30.6%, p=6.0×10(-4)). For the first time, we report profiles of polyamines from the whole blood of healthy nona/centenarians, and our results confirm and extend previous findings on the role of polyamines in determining human longevity(3).
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Sources
(3) http://www.ncbi.nlm.nih.gov/pubmed/22950434

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