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Publication : Cardioprotection and lifespan extension by the natural polyamine spermidine.

First Author	Eisenberg T	Year	2016
Journal	Nat Med	Volume	22
Issue	12	Pages	1428-1438
PubMed ID	27841876	Mgi Jnum	J:241152
Mgi Id	MGI:5897926	Doi	10.1038/nm.4222
Citation	Eisenberg T, et al. (2016) Cardioprotection and lifespan extension by the natural polyamine spermidine. Nat Med 22(12):1428-1438

abstractText

Aging is associated with an increased risk of cardiovascular disease and death. Here we show that oral supplementation of the natural polyamine spermidine extends the lifespan of mice and exerts cardioprotective effects, reducing cardiac hypertrophy and preserving diastolic function in old mice. Spermidine feeding enhanced cardiac autophagy, mitophagy and mitochondrial respiration, and it also improved the mechano-elastical properties of cardiomyocytes in vivo, coinciding with increased titin phosphorylation and suppressed subclinical inflammation. Spermidine feeding failed to provide cardioprotection in mice that lack the autophagy-related protein Atg5 in cardiomyocytes. In Dahl salt-sensitive rats that were fed a high-salt diet, a model for hypertension-induced congestive heart failure, spermidine feeding reduced systemic blood pressure, increased titin phosphorylation and prevented cardiac hypertrophy and a decline in diastolic function, thus delaying the progression to heart failure. In humans, high levels of dietary spermidine, as assessed from food questionnaires, correlated with reduced blood pressure and a lower incidence of cardiovascular disease. Our results suggest a new and feasible strategy for protection against cardiovascular disease.

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Publication : Cardioprotection and lifespan extension by the natural polyamine spermidine.

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