Model: Young (2- to 4-month-old) and aged (9- to 10-month-old) C57Bl/6JR mice, APP/PS1 mice, and 5xFAD mice 
Dosage: 0.2 mg/mL of doxycycline in drinking water starting at least 7 days before surgery and ceased 2 days before the partial cellular reprogramming window for engram tagging, after which it was immediately reintroduced

Gene Therapy Restores Cognitive Function in Aging and Alzheimer’s Disease

Delivering a gene therapy targeting ensembles of neurons that store memories restores learning and memory capabilities in mouse models of aging and Alzheimer’s disease.

(The study’s principal investigator, Professor Johannes Gräff | 24 Heures)

A partial cellular reprogramming gene therapy targeting memory trace cells restores facets of learning and memory in aged mice and those modeling Alzheimer’s disease.

Brain &amp; Neurons

Participants: Healthy middle-aged adults 
Dosage: 1200 mg/day of NR for 4 weeks

NR (nicotinamide riboside) raises blood NAD+ (nicotinamide adenine dinucleotide) levels more than NMN (nicotinamide mononucleotide) in healthy adults. 

Some of the researchers on the study, Dr. Christian Dölle (left) and Dr. Charalampos Tzoulis (middle) from the University of Bergen in Norway (image: uib.no). 

Model: Female New Zealand white rabbits 
Dosage: 20 mg/kg of fisetin

Fisetin reduces susceptibility to a heart condition called atrial fibrillation (AF) and eliminates age-promoting senescent cells in aged rabbits.  

On the right is Principal Investigator Gideon Koren, MD (image: brownhealth.org).

Cardiovascular

Model: 22-month-old male C57BL/6NIH mice 
Dosage: 400 mg/kg of NR for eight weeks, administered in food

Treating aged mice with the NAD+ (nicotinamide adenine dinucleotide) precursor NR (nicotinamide riboside) improves memory and reduces pro-inflammatory immune cells.

Senior members of the research team, Dr. Bruce R. Troen and Dr. Kenneth L. Seldeen (image: buffalo.edu).  

Elevating the naturally occurring molecule NAD+ (nicotinamide adenine dinucleotide) improves memory and corrects gene-splicing patterns in a worm and a mouse model for dementia. 

Senior author on the study, Dr. Evandro Fang (front left), with some students (image: evandrofanglab.com)

Search Result: cognitive impairment

Gene Therapy Targeting Memory-Encoding Neurons Restores Cognitive Function in Aging and Alzheimer’s Disease

NR Raises NAD+ Over 2-Fold More than NMN: New Study Comparing NAD+ Precursors

Natural Compound Fisetin Combats Heart Disease by Eliminating Senescent Cells: New Brown University Study

NAD+ Supplement Improves Memory & Brain Immune Cells, New Study Reveals

New Research: Correcting Gene Splicing with NAD+ Boosts Memory