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Safety and Tolerability of Spermidine Supplementation in Mice and Older Adults With Subjective Cognitive Decline

Safety and Tolerability of Spermidine Supplementation in Mice and Older Adults With Subjective Cognitive Decline

Claudia Schwarz, Slaven Stekovic, Miranka Wirth, Gloria Benson, Philipp Royer, Stephan J Sigrist, Thomas Pieber, Christopher Dammbrueck, Christoph Magnes, Tobias Eisenberg, Tobias Pendl, Jens Bohlken, Theresa Köbe, etc.

Aging (Albany NY). 2018 Jan 8;10(1):19-33.

PMID: 29315079

Abstract:

Supplementation of spermidine, an autophagy-inducing agent, has been shown to protect against neurodegeneration and cognitive decline in aged animal models. The present translational study aimed to determine safety and tolerability of a wheat germ extract containing enhanced spermidine concentrations. In a preclinical toxicity study, supplementation of spermidine using this extract did not result in morbidities or changes in behavior in BALBc/Rj mice during the 28-days repeated-dose tolerance study. Post mortem examination of the mice organs showed no increase in tumorigenic and fibrotic events. In the human cohort (participants with subjective cognitive decline, n=30, 60 to 80 years of age), a 3-month randomized, placebo-controlled, double-blind Phase II trial was conducted with supplementation of the spermidine-rich plant extract (dosage: 1.2 mg/day). No differences were observed between spermidine and placebo-treated groups in vital signs, weight, clinical chemistry and hematological parameters of safety, as well as in self-reported health status at the end of intervention. Compliance rates above 85% indicated excellent tolerability. The data demonstrate that spermidine supplementation using a spermidine-rich plant extract is safe and well-tolerated in mice and older adults. These findings allow for longer-term intervention studies in humans to investigate the impact of spermidine treatment on cognition and brain integrity.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP124209	Spermidine		124-20-9	Price

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