Results 81 to 90 of about 2,520,144 (213)

The inimitable kynurenic acid: The roles of different ionotropic receptors in the action of kynurenic acid at a spinal level

Brain Research Bulletin, 2015
Kynurenic acid (KYNA) is a neuroactive metabolite that interacts with NMDA, AMPA/kainate and alpha 7 nicotinic receptors. The goal of this study was to clarify the roles of these receptors in the action of KYNA at a spinal level by using highly specific receptor antagonists alone or in triple combinations.
Gabor Tuboly, Lilla Tar, Zsuzsanna Bohar, Arpad Safrany-Fark, Zita Petrovszki, Gabriella Kekesi, Laszlo Vecsei, Arpad Pardutz, Gyongyi Horvath   +8 more
openaire   +3 more sources

Kaempferol Protects Intestinal Health in Chinese Forest Musk Deer Possibly by Regulating Intestinal Microbiota and Inhibiting the NF‐κB/NLRP3 Signaling Pathway

Integrative Zoology, EarlyView.
Kaempferol modulates the tryptophan metabolism pathway by increasing the abundances of Christensenellaceae R7 group, Bacteroides, and Blautia and reducing that of Rikenellaceae RC9 gut group, thereby significantly increasing the levels of ILA and IAA. This process inhibits the activation of NF‐κB/NLRP3 signaling pathway, reduces pro‐inflammatory factor
Xiangyu Liu, Zhanjun Ren, Xiuzhu Sun, Shuhui Wang   +3 more
wiley   +1 more source

Perturbations of tryptophan catabolism via the kynurenine pathway are associated with stage 2 postoperative outcomes in single ventricle heart disease

Physiological Reports
Preliminary evidence suggests perturbations of the kynurenine pathway (KP) of tryptophan metabolism in infants with single ventricle heart disease (SVHD). In 72 infants with SVHD undergoing stage 2 palliation (S2P) and 41 controls, we quantified serum KP
Jennifer Romanowicz, Sierra Niemiec, Ludmila Khailova, Tanner Lehmann, Christopher A. Mancuso, Max B. Mitchell, Gareth J. Morgan, Mark Twite, Michael V. DiMaria, Jelena Klawitter, Jesse A. Davidson, Benjamin S. Frank   +11 more
doaj   +1 more source

Potentiation effects of the positive allosteric modulator PTC‐174 on NMDA receptors in neonatal male rat substantia nigra dopaminergic neurons

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Positive allosteric modulators bind to secondary binding sites on the receptor and alter receptor conformation and activation, changing agonist potency and efficacy. PTC‐174 is a novel NMDA receptor positive allosteric modulator that particularly enhances activity of receptors containing GluN2C or GluN2D subunits.
Bangyuan Liu, Alasdair J. Gibb
wiley   +1 more source

NMDA receptor subunit‐dependent analysis of radiprodil inhibition in neonatal male rat substantia nigra dopaminergic neurons

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Radiprodil is a GluN2B subunit selective NMDA receptor negative allosteric modulator which is currently under clinical investigation as a possible anti‐epileptic drug for paediatric use. Our goal was to investigate the inhibition of dopaminergic neuron NMDA responses by radiprodil.
Bangyuan Liu, Alasdair J. Gibb
wiley   +1 more source

Selective excitatory effects of γ‐glutamyl‐glycine, a glutathione metabolite, on GluN1 NMDA and mGlu5 receptors impacting synaptic plasticity

British Journal of Pharmacology, EarlyView.
Background and Purpose Gamma‐glutamyl dipeptides are essentially produced after glutathione (GSH) degradation. While several γ‐glutamyl dipeptides have been detected in different organs and body fluids, their biological activity remains elusive. This is the case for γ‐Glutamyl‐Glycine (γ‐Glu‐Gly) which has been found in different brain areas.
Sandro Andreu, Victoria Gizzi, Ugo Pasco, Fatiha Sebih, Yattou Zitouni, Pablo Jimenez, Valérie Rolland, Alain Chavanieu, Sébastien Estaran, Matthieu Rousset, Thierry Cens, Guillaume Cazals, Pierre Charnet, Janique Guiramand, Catherine Cohen‐Solal, Claudine Ménard, Marie‐Céleste de Jésus Ferreira, Nathalie Chevallier, Sonia Cantel, Michel Vignes, Julien Roussel   +20 more
wiley   +1 more source

Mitochondrial Ca2+ uniporter haploinsufficiency leads to sexually dimorphic redox imbalance and metabolic remodelling in the mouse brain

The Journal of Physiology, EarlyView.
Abstract figure legend The genetic inactivation of one Mcu allele leads to sex‐specific changes in neuronal function in adult mice, that is, the firing of action potentials and the relationship between cytosolic and mitochondrial Ca2+ levels. The ability to produce NAD(P)H by stimulated neural tissue is largely preserved in male mice but delayed in ...
Jenna Gray, Girish Halemirle, Beatriz Ferrán, Hadyn Rose, Traci L. Redwine, Sophia Pham, Bo Hagy, Atul Pranay, Jennifer Giorgione, Stacy A. Hussong, Veronica Galvan, Kenneth Humphries, Holly Van Remmen, Mike Kinter, William E. Sonntag, Pankaj K. Singh, Carlos Manlio Díaz‐García   +16 more
wiley   +1 more source

A history of suicide attempts among individuals with schizophrenia is associated with tryptophan degradation via the salivary kynurenine pathway

BMC Psychiatry
Background Tryptophan, an essential precursor metabolite within the kynurenine pathway, has been implicated in the neurobiological mechanisms underlying both schizophrenia and associated suicidality. Despite this link, the lack of validated biomarkers to
Yi Yin, Ting Xie, Jinghui Tong, Junchao Huang, Baopeng Tian, Mengzhuang Gou, Song Chen, Shuping Tan, Zhiren Wang, Yongsheng Tong, Yanfang Zhou, Leilei Wang, Yunlong Tan   +12 more
doaj   +1 more source

Gq Signaling in Microglia Triggers Interferon Responses and Improves Outcome After Ischemic Stroke

Glia, Volume 74, Issue 10, October 2026.
Chemogenetic activation of Gq signaling in microglia ahead of ischemic stroke reduces infarct size in mice. Seven days after stroke, Gq‐primed microglia in the penumbra show enhanced interferon responses, altered branching patterns, and reduced phagocytosis.
Lynn Bitar, Marie‐Luise Brehme, Charlotte Oldenburg, Sara Isla Cainzos, Michael G. Kaul, Tobias Mummert, Malte Borggrewe, Thomas G. Oertner, Tim Magnus   +8 more
wiley   +1 more source

Microbiome‐Derived Tryptophan Metabolites Regulate AhR Signaling to Restore Epithelial Barrier Integrity in Inflammatory Bowel Disease

MicrobiologyOpen, Volume 15, Issue 5, October 2026.
The graphical abstract illustrates how microbiome‐derived indoles activate the aryl hydrocarbon receptor to restore the intestinal barrier. The picture contrasts the “leaky gut” state with the restored homeostasis achieved through AMPK, Nrf2, and IL‐22 signaling.
Mohammad Ali Mahdiabadi, Asma Moghaddam, Nafiseh Erfanian   +2 more
wiley   +1 more source