Results 81 to 90 of about 26,899 (190)

Impaired Motor Function in a Zebrafish Stathmin‐2 Knockout Model

Developmental Neurobiology, Volume 86, Issue 4, October 2026.
ABSTRACT Stathmin‐2 (STMN2) is a microtubule‐associated protein that plays a role in the stability of microtubules in axons of the nervous system of animals. In this study, we generated a novel zebrafish STMN2 knockout (KO) model. STMN2 is represented by two genes in the zebrafish genome: stmn2a and stmn2b.
Tyler J. N. Gurberg, Ziyaan A. Harji, Christian J. Rampal, Joséphine Sacy‐Richer, Amy Wang, Esteban C. Rodríguez, Gary A. B. Armstrong   +6 more
wiley   +1 more source

Dorso‐Ventral and Night‐Day Regulation of Extracellular K+ Dynamics in Mouse Hippocampal Astrocytes

Glia, Volume 74, Issue 9, September 2026.
Hippocampal astrocytic K+ buffering varies by region and time. Ventral astrocytes show faster K+ accumulation due to reduced Kir4.1 function. Such regional divergence is modulated by circadian shifts in Kir4.1 and gap junction coupling. ABSTRACT Astrocytes regulate extracellular potassium (K+) through multiple mechanisms operating across distinct ...
Nariman Kiani, Kabeer Abubakar, Tin Luka Petanjek, Monique Esclapez, Anton Ivanov, Christophe Bernard   +5 more
wiley   +1 more source

Transfer of Potentially Toxic Metal(loid)s From Ultramafic Soils in a Tri‐Trophic Food Chain Experiment

Ecological Research, Volume 41, Issue 5, September 2026.
Potentially toxic metal(loid)s (PTMs) bioaccumulated across a plant‐herbivore‐predator food chain. Irrespective of soil concentrations, female crickets actively selected PTM‐enriched leaves, while predatory mantids showed no developmental impairment. Trophic transfer of PTMs was rather influenced more by a function of intrinsic species traits than by ...
João Marcelo‐Silva, Tean Francois Joubert, Stefan John Siebert, Bianca Greyvenstein   +3 more
wiley   +1 more source

Activation of GHSRs Facilitates the Excitability of Dentate Gyrus Granule Cells and Short‐Term Spatial Memory via Multiple Ionic and Signaling Mechanisms

Advanced Biology, Volume 10, Issue 8, August 2026.
Ghrelin excites the dentate gyrus (DG) granule cells via GHSR‐mediated modulation of diverse ionic channels and activation of D1R, cAMP, and EPAC2. Similarly, overnight calorie restriction alters neuronal excitability in a ghrelin‐dependent manner. Infusion of ghrelin directly into the DG improves short‐term spatial memory in the Y‐maze, providing ...
Chidiebele S. Oraegbuna, Phani K. Kola, Simon L. Griggs, Saobo Lei   +3 more
wiley   +1 more source

Interaction of the Gut Microbiota and the Enteric Nervous System: Implications in Gastrointestinal Disorders Associated With Autism Spectrum Disorder

Autism Research, Volume 19, Issue 8, August 2026.
ABSTRACT Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impairments in social interaction, restricted interests, and repetitive behaviors. In addition to these core behavioral symptoms, gastrointestinal (GI) disorders are frequently reported, ranging from severe constipation to diarrhea.
Baptiste Ganachaud, María José Mendoza‐León, Justine Marchix, Alonso Fernandez Tello, Catherine Le Berre Scoul, Ma Cecilia Opazo, Michel Neunlist, Claudia A. Riedel, Martial Caillaud, Hélène Boudin   +9 more
wiley   +1 more source

Early Developmental Neuronal Activity Impacts Oligodendrocyte Differentiation Through AMPA Receptors

Glia, Volume 74, Issue 8, August 2026.
In early brain development, neuronal activity reduces OPC differentiation. Decreased neuronal activity changes oligodendrocyte gene expression, including upregulating glutamate receptor genes. AMPA signaling regulates the final stages of OPC differentiation.
Tessa E. Allen, Graham Peet, Luis E. Gomez Wulschner, Won Chan Oh, Wendy B. Macklin   +4 more
wiley   +1 more source

Astrocytic mGluR5 Regulation of Synaptic Transmission is Activity‐Dependent in Adult Rats

Glia, Volume 74, Issue 8, August 2026.
In adulthood, astrocytic mGluR5 increases synaptic efficacy through presynaptic A2ARs. This occurs when a small number of synapses are activated simultaneously. This pathway is abolished when numerous synapses are recruited. ABSTRACT Data accumulated over the last two decades have demonstrated that astrocytes play key roles in the regulation of ...
Sarah Mountadem, Muna L. Hilal, Dylan Pommier, Dorian Arnouil, Valentin Clément Langlais, Vincent Simon, Aurélie Amadio, Marie Miegebielle, Sébastien Marais, Charlène Joséphine, Astrid Cannich, Marjorie Varilh, Julien Bourel, Daniela Cota, Giovanni Marsicano, Alexis‐Pierre Bemelmans, Philippe Ciofi, Stéphane Henri Richard Oliet, Aude Panatier   +18 more
wiley   +1 more source

Pufferfish exposure and presumed tetrodotoxicosis in Australian dogs: 372 cases (2007–2018)

Australian Veterinary Journal, Volume 104, Issue 8, Page 497-508, August 2026.
Introduction Tetrodotoxin (TTX) is a neurotoxin found in pufferfish that results in the blockade of excitatory conduction and clinical signs including gastrointestinal upset and paralysis. The objectives of this study were to describe the epidemiology of pufferfish exposure and presumed tetrodotoxicosis in dogs, and to determine associations with the ...
J Hanson, CR Sharp, EM Leister
wiley   +1 more source

Memantine prevents acute stress‐induced memory deficits by reversing sex‐dependent pathophysiological glutamatergic alterations in the dorsal hippocampus

British Journal of Pharmacology, Volume 183, Issue 16, Page 4939-4952, August 2026.
Abstract Background and Purpose The neural mechanisms underlying effects of acute stress on memory are poorly understood. We demonstrated previously that acute stress produces identical spatial memory deficits in male and female mice but through distinct molecular mechanisms, with females exhibiting up‐regulation of N‐methyl‐D‐aspartate (NMDA) receptor
Sebastiano A. Torrisi, Lidia Diolosà, Giuseppe Aceto, Claudia Marchetti, Federica Geraci, Konstantinos Partsinevelos, Silvia Rizzo, Margherita Grasso, Filippo Caraci, Francesco Bellia, Giovanni Li Volti, Angela Maria Amorini, Marcello D′Ascenzo, Gian Marco Leggio   +13 more
wiley   +1 more source

Chemical properties and biological activities of three highly purified major tetrodotoxin analogues

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
Tetrodotoxin (TTX), the pufferfish toxin, has the potential to cause fatal food poisoning because of its potent voltage-gated sodium channel (Nav) blocking activity.
Mari YOTSU-YAMASHITA, Yuta KUDO, Kyoka SATO, Osamu CHIBA, Yuko CHO, Ryuichi WATANABE, Toshiyuki SUZUKI, Keiichi KONOKI   +7 more
doaj   +1 more source