Results 81 to 90 of about 28,974 (217)

Dysregulation of Astrocytic ATP/Adenosine Release in the Hippocampus Cause Cognitive and Affective Disorders: Molecular Mechanisms, Diagnosis, and Therapy

open access: yesMedComm, Volume 6, Issue 5, May 2025.
Reactive astrocytes release various molecules, which play a role in maintaining central nervous system (CNS) homeostasis. (1) Gliotransmitters, such as glutamate, γ‐aminobutyric acid (GABA), ATP, and D‐serine, are secreted by vesicular exocytosis. In addition, astrocytes can also release ATP and glutamate through (2) P2X7Rs, (3) connexin‐43 (Cx43 ...
Peter Illes   +4 more
wiley   +1 more source

5-Hydroxytryptamine, Glutamate, and ATP: Much More Than Neurotransmitters

open access: yesFrontiers in Cell and Developmental Biology, 2021
5-hydroxytryptamine (5-HT) is derived from the essential amino acid L-tryptophan. Although the compound has been studied extensively for its neuronal handling and synaptic actions, serotonin 5-HT receptors can be found extra-synaptically and not only in ...
Rafael Franco   +9 more
doaj   +1 more source

Activity-dependent release of Adenosine: a critical re-evaluation of mechanism [PDF]

open access: yes, 2008
Adenosine is perhaps the most important and universal modulator in the brain. The current consensus is that it is primarily produced in the extracellular space from the breakdown of previously released ATP.
Dale, Nicholas, Wall, Mark J.
core   +2 more sources

Harnessing nucleotide metabolism and immunity in cancer: a tumour microenvironment perspective

open access: yesThe FEBS Journal, Volume 292, Issue 9, Page 2155-2172, May 2025.
This review explores how changes in nucleotide metabolism affect the tumour microenvironment and immune responses in cancer. Here, we discuss the dual role of nucleotide metabolism in promoting cancer cell growth and shaping immune suppression. We highlight how therapies targeting nucleotide pathways can enhance immunotherapy efficacy, offering new ...
Hadil Suleiman   +5 more
wiley   +1 more source

Functions of Purinergic Receptors [PDF]

open access: yes, 2019
Purinergic receptors, also known as purinoceptors, are a family of plasma membrane molecules found in many mammalian tissues. Purinergic receptors are transmembrane receptors consisting of two main categories.
Sarikaya, Eren
core   +2 more sources

Extracellular ATP: an emerging multifaceted regulator of plant fitness

open access: yesPlant Biotechnology Journal, Volume 23, Issue 5, Page 1771-1782, May 2025.
Summary Adenosine 5′‐triphosphate (ATP) is the energy currency of living organisms and the primary form of organic phosphate (Po) involved in cellular metabolism. In plants, some ATP is released into the extracellular matrix (ECM) in response to various stimuli, where it functions as extracellular ATP (eATP), a key signalling molecule.
De Peng Yuan, Daewon Kim, Yuan Hu Xuan
wiley   +1 more source

Isolation and characterization of Pisum sativum apyrases, PsNTP9 and PsNTP9-DM, cloned and expressed in Escherichia coli [PDF]

open access: yes, 2019
Adenosine triphosphate (ATP) is widely known as a fuel source for many biochemical processes, and to a lesser degree also as a signaling molecule in plants and animals.
Wallen, Michael Andrew, Jr
core   +1 more source

Idiopathic Pulmonary Fibrosis Caused by Damaged Mitochondria and Imbalanced Protein Homeostasis in Alveolar Epithelial Type II Cell

open access: yesAdvanced Biology, Volume 9, Issue 4, April 2025.
By systematizing a large body of evidence and propose a cascade relationship between protein homeostasis, endoplasmic reticulum stress, mitochondrial dysfunction, and pro‐fibrotic factor, providing a theoretical basis for ATII cells dysfunction as a possible pathophysiological initiating event for idiopathic pulmonary fibrosis.
Zhaoxiong Dong   +6 more
wiley   +1 more source

New insights into purinergic receptor signaling in neuronal differentiation, neuroprotection, and brain disorders [PDF]

open access: yes, 2007
Ionotropic P2X and metabotropic P2Y purinergic receptors are expressed in the central nervous system and participate in the synaptic process particularly associated with acetylcholine, GABA, and glutamate neurotransmission. As a result of activation, the
Britto, Luiz R.G.   +7 more
core   +3 more sources

Metabolic Dialogue Shapes Immune Response in the Tumor Microenvironment

open access: yesEuropean Journal of Immunology, Volume 55, Issue 4, April 2025.
Metabolic antagonism in the TME suppresses CD8+ T cell function by depleting essential nutrients and generating toxic byproducts. Metabolic symbiosis between tumor cells and TAMs fosters an immunosuppressive microenvironment. Disrupting metabolic interactions can overcome immune suppression, boost antitumor immunity, and enhance immunotherapy efficacy.
Fengxia Gao   +3 more
wiley   +1 more source

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