Results 21 to 30 of about 73,229 (276)

Astrocytes and Microglia Are Resistant to NAD+-Mediated Cell Death Along the ARTC2/P2X7 Axis

open access: yesFrontiers in Molecular Neuroscience, 2020
ADP-ribosylation of the P2X7k splice variant on mouse T cells by Ecto-ADP-ribosyltransferase ARTC2.2 in response to its substrate extracellular nicotinamide adenine dinucleotide (NAD+) triggers cell death. Since NAD+ is released as a danger signal during
Björn Rissiek   +7 more
doaj   +1 more source

miR-146a impedes the anti-aging effect of AMPK via NAMPT suppression and NAD+/SIRT inactivation

open access: yesSignal Transduction and Targeted Therapy, 2022
Nicotinamide adenine dinucleotide (NAD+) is indispensable for the anti-aging activity of the sirtuin (SIRT) family enzymes. AMP-activated protein kinase (AMPK) upregulates NAD+ synthesis and SIRT activity in a nicotinamide phosphoribosyltransferase ...
Hui Gong   +15 more
doaj   +1 more source

A generic HTS assay for kinase screening: Validation for the isolation of an engineered malate kinase. [PDF]

open access: yesPLoS ONE, 2018
An end-point ADP/NAD+ acid/alkali assay procedure, directly applicable to library screening of any type of ATP-utilising/ADP producing enzyme activity, was implemented.
Romain Irague   +8 more
doaj   +1 more source

Exogenous NAD+ Stimulates MUC2 Expression in LS 174T Goblet Cells via the PLC-Delta/PTGES/PKC-Delta/ERK/CREB Signaling Pathway

open access: yesBiomolecules, 2020
Background: MUC2, a major component of the mucus layer in the intestine, is associated with antimicrobial activity and gut immune system function. Currently, mucin is mainly known for its critical function in defense against toxic molecules and pathogens.
Seongho Ma, Jiah Yeom, Young-Hee Lim
doaj   +1 more source

The Impact of NAD Bioavailability on DNA Double-Strand Break Repair Capacity in Human Dermal Fibroblasts after Ionizing Radiation

open access: yesCells, 2023
Nicotinamide adenine dinucleotide (NAD) serves as a substrate for protein deacetylases sirtuins and poly(ADP-ribose) polymerases, which are involved in the regulation of DNA double-strand break (DSB) repair molecular machinery by various mechanisms ...
Maria Svetlova   +3 more
doaj   +1 more source

Calmodulin Is the Fundamental Regulator of NADK-Mediated NAD Signaling in Plants

open access: yesFrontiers in Plant Science, 2019
Calcium (Ca2+) signaling and nicotinamide adenine dinucleotide (NAD) signaling are two basic signal regulation pathways in organisms, playing crucial roles in signal transduction, energy metabolism, stress tolerance, and various developmental processes ...
Li Tai   +9 more
doaj   +1 more source

Extracellular Degradation Into Adenosine and the Activities of Adenosine Kinase and AMPK Mediate Extracellular NAD+-Produced Increases in the Adenylate Pool of BV2 Microglia Under Basal Conditions

open access: yesFrontiers in Cellular Neuroscience, 2018
Cumulating evidence has indicated NAD+ deficiency as a common central pathological factor of multiple diseases and aging. NAD+ supplement is highly protective in various disease and aging models, while two key questions have remained unanswered: (1) Does
Jie Zhang   +5 more
doaj   +1 more source

Impaired nicotinamide adenine dinucleotide (NAD+) metabolism in diabetes and diabetic tissues: Implications for nicotinamide‐related compound treatment

open access: yesJournal of Diabetes Investigation, 2020
One of the biochemical abnormalities found in diabetic tissues is a decrease in the cytosolic oxidized to reduced forms of the nicotinamide adenine dinucleotide ratio (NAD+/NADH also known as pseudohypoxia) caused by oxidation of excessive substrates ...
Lan Fan, Jose M. Cacicedo, Yasuo Ido
doaj   +1 more source

Activation of Akt by advanced glycation end products (AGEs): involvement of IGF-1 receptor and caveolin-1. [PDF]

open access: yesPLoS ONE, 2013
Diabetes is characterized by chronic hyperglycemia, which in turn facilitates the formation of advanced glycation end products (AGEs). AGEs activate signaling proteins such as Src, Akt and ERK1/2.
Su-Jung Yang   +7 more
doaj   +1 more source

Nutraceutical activation of Sirt1: a review

open access: yesOpen Heart, 2022
The deacetylase sirtuin 1 (Sirt1), activated by calorie restriction and fasting, exerts several complementary effects on cellular function that are favourable to healthspan; it is often thought of as an ‘anti-aging’ enzyme. Practical measures which might
James J DiNicolantonio   +2 more
doaj   +1 more source

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