• Log in with Facebook Log in with Twitter Log In with Google      Sign In    
  • Create Account
  LongeCity
              Advocacy & Research for Unlimited Lifespans

Photo

Nicotinamide riboside augments the human skeletal muscle NAD+ metabolome and induces transcriptomic and ....

nicotinamide riboside nad+ nr supplementation nad+ metabolome

  • Please log in to reply
No replies to this topic

#1 Engadin

  • Guest
  • 87 posts
  • 216
  • Location:Madrid, Spain.
  • NO

Posted 29 June 2019 - 02:35 PM


First posted by Frederick

 

 

S O U R C E :   bioRvx

 

 

F U L L   T E X T

 

 

 

Nicotinamide riboside augments the human skeletal muscle NAD+ metabolome and induces transcriptomic and anti-inflammatory signatures in aged subjects: a placebo-controlled, randomized trial

 

 

Abstract

 

 

NAD+ is modulated by conditions of metabolic stress and has been reported to decline with aging, but human data are sparse. Nicotinamide riboside (NR) supplementation ameliorates metabolic dysfunction in rodents. We aimed to establish whether oral NR supplementation in aged participants can increase the skeletal muscle NAD+ metabolome, and questioned if tissue NAD+ levels are depressed with aging. We supplemented 12 aged men with NR 1g per day for 21-days in a placebo-controlled, randomized, double-blind, crossover trial. Targeted metabolomics showed that NR elevated the muscle NAD+ metabolome, evident by increased nicotinic acid adenine dinucleotide and nicotinamide clearance products. Muscle RNA sequencing revealed NR-mediated downregulation of energy metabolism and mitochondria pathways. NR also depressed levels of circulating inflammatory cytokines. In an additional study, 31P magnetic resonance spectroscopy-based NAD+ measurement in muscle and brain showed no difference between young and aged individuals. Our data establish that oral NR is available to aged human muscle and identify anti-inflammatory effects of NR, while suggesting that NAD+ decline is not associated with chronological aging per se in human muscle or brain.

 

 

.

 


Edited by Engadin, 29 June 2019 - 02:36 PM.






Also tagged with one or more of these keywords: nicotinamide riboside, nad+, nr supplementation, nad+ metabolome

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users