Unique Mutations in Mouse Hepatitis Virus Reduce Virus Replication: Preclinical Findings

SynopsisAll coronaviruses contain a small domain called the macrodomain, or Mac1, within the nonstructural protein 3 (nsp3). Mac1 binds to and removes a molecule called mono-ADP-ribose (MAR) that a...

Role of nadR Gene in Growth and Virulence of Streptococcus suis Bacteria: Preclinical Findings

SynopsisStreptococcus suis serotype 2 (SS2) is a harmful bacterium in pigs that can also infect humans. This study investigated the role of the nadR gene, which helps make and transport NAD+ inside...

Nicotinamide Riboside Restores NAD+ Metabolism and Improves Recovery in COVID-19: Preclinical Findings

SynopsisSevere COVID-19 initially causes lung infection and inflammation. Some patients develop Post-Acute Sequelae of COVID (PASC), experiencing ongoing lung problems, fatigue, and cognitive issue...

Nicotinamide Riboside Reduces Alcohol-Induced Inflammation and Oxidative Stress in Immune Cells: Preclinical Findings

SynopsisMacrophages play an important role in inflammation and oxidative stress caused by alcohol. Researchers studied how nicotinamide riboside (NR), a precursor of NAD+, affects alcohol-induced i...

Nicotinamide Riboside Increases Stress Sensitivity and Alters Blood Cell Composition in Aging: Preclinical Findings

SynopsisNicotinamide riboside (NR) is a precursor to NAD⁺, a key molecule for cellular energy that declines with age. Aging can cause reduced brain and immune function, changes in blood, and greate...

Nicotinamide Riboside Improves Blood Cell Formation in Aging and Ataxia Telangiectasia: Preclinical Findings

SynopsisNAD+ supplements can boost mitochondrial health and DNA repair, which benefits stem cells in aging or disease. This study tested nicotinamide riboside (NR) in mice with reduced blood stem c...

Nicotinamide Riboside Helps Improve Symptoms in Lupus: Preclinical Findings

SynopsisThe protein PPP2R2A helps regulate the immune system, and in lupus-prone mice, T cells lacking this protein caused less autoimmunity and kidney damage. Without PPP2R2A, T cells produced mor...

Nicotinamide Riboside and Nicotinamide Mononucleotide Prevent Oxidative Stress in Blood Vessel Cells From COVID-19 Patients: Preclinical Findings

SynopsisCOVID-19 is associated with vascular endothelial dysfunction, but mechanisms remain unclear. This study exposed human aortic endothelial cells (HAECs) to plasma from hospitalized COVID-19 p...

NAD+ Levels Control Inflammatory Responses in Immune Cells: Preclinical Findings

SynopsisNAD+ is important for cell metabolism and inflammation, but how it affects immune cells is not well understood. This study looked at how changing NAD+ levels using nicotinamide riboside (NR...

How NAD+ Recycling Pathways Influence Virulence in Pneumonia Bacteria: Preclinical Findings

SynopsisNAD is an essential molecule found in all living cells. Some bacteria, like Streptococcus pneumoniae, cannot make NAD from scratch and must recycle it by importing related compounds such as...

Counteracting CD38-Induced NAD+ Depletion Reduces Multiple Organ Fibrosis: Preclinical Findings

SynopsisSystemic sclerosis (SSc) involves fibrosis in multiple organs, but its cause is not fully understood. NAD+ decline with age and disease, often due to increased CD38 activity (an NADase), ma...

Nicotinamide Riboside Protects Neurons More Effectively Than NAD+: Preclinical Findings

Synopsis Loss of NAD+ is common in neurodegenerative diseases. Excitotoxicity, caused by excessive stimulation of neurons, leads to nerve damage. This study found that nicotinamide riboside (NR), ...

NAD+ Biosynthesis Enzyme Protects Aortic Smooth Muscle Cells: Preclinical Findings

Synopsis The walls of the aorta weaken with age and stress, risking serious damage. Smooth muscle cells (SMCs) in the aorta need NAD+, made by the enzyme NAMPT, for health. In humans with aortic d...

Nicotinamide Riboside Supplementation Supports Immune Regulation in Human Cells and Blood: Clinical Findings

Objectives To investigate how NR influences the migration of macrophages and the underlying mechanisms behind this effect. Journal Cells Key Outcomes Ex Vivo: NR treatment increased levels of ...

Nicotinamide Riboside Supplementation Reduces Inflammatory Markers in Immune Cells from Healthy Subjects and Psoriasis Patients: Clinical Findings

Objectives To examine how ex-vivo NR supplementation affects adaptive immunity in CD4+ T cells extracted from healthy subjects and those with mild-moderate psoriasis, and to investigate the in viv...

Nicotinamide Riboside Supplementation Boosts NAD+ and Lowers Inflammatory Immune Signaling in Lupus: Clinical Findings

Objectives To explore the anti-inflammatory effects of NR in monocytes (a type of white blood cell; immune cell) extracted from young, healthy subjects following supplementation. Additionally, the...

Nicotinamide Riboside Supplementation Combined with Other Nutrients Accelerates Recovery in COVID-19 Patients: Clinical Findings

Objectives To investigate supplementation of the combined metabolic activators (CMA), consisting of L-serine, N-acetyl-L-cysteine (NAC), NR, and L-carnitine tartrate for the treatment of patients ...

Emerging Role of Nicotinamide Riboside in Health and Diseases: Review

SynopsisAmong NAD⁺ precursors, nicotinamide riboside (NR) stands out for its safety, effectiveness, and oral bioavailability. A newly identified form of vitamin B3, NR boosts NAD+ in cells and has ...

Exploring NAD+ Metabolism in Host–Pathogen Interactions: Review

SynopsisNAD+ is found in all living cells and is controlled by its production, recycling, and breakdown. It is already a drug target for diseases like cancer, neurodegeneration, and inflammation, a...