This 2022 review explores the critical role of NAD⁺ in skeletal muscle health, particularly in the contexts of aging and exercise. It outlines how NAD⁺ functions as a coenzyme in metabolic pathways and as a substrate for enzymes like sirtuins (SIRTs), PARP-1, and CD38. The paper discusses how aging and
This review article highlights the critical role of nicotinamide adenine dinucleotide (NAD⁺) deficiency in various diseases and aging processes. It discusses how NAD⁺ deficiency is observed in models of cerebral ischemia, myocardial ischemia, diabetes, and aging. The deficiency results from factors like poly(ADP-ribose) polymerase-1 (PARP-1) activation, decreased nicotinamide phosphoribosyltransferase (Nampt)
This 2017 review explores the critical role of nicotinamide adenine dinucleotide (NAD⁺) in aging and age-related diseases. NAD⁺ is essential for cellular metabolism, DNA repair, and stress responses. The study highlights that NAD⁺ levels decline with age, contributing to various pathologies, including neurodegenerative diseases, cardiovascular conditions, and muscle atrophy. The
This 2020 review explores how diabetes disrupts NAD⁺ metabolism, leading to reduced NAD⁺/NADH ratios (pseudohypoxia) due to increased substrate oxidation. In type 1 diabetes, NAD⁺ depletion is driven by poly(ADP-ribose) polymerase (PARP) activation, while in type 2 diabetes, decreased AMP-activated protein kinase (AMPK) activity impairs NAD⁺ biosynthesis via downregulation of
