Results 81 to 90 of about 26,870 (181)

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

Endothelium‐ and epithelium‐derived novel endogenous catecholamines as modulators of the autonomic nervous system

British Journal of Pharmacology, Volume 183, Issue 15, Page 4091-4110, August 2026.
Abstract Catecholamines are classically viewed as neuronal transmitters and adrenal hormones; however, accumulating evidence demonstrates that sources other than nerve fibres and adrenal medulla play a fundamental role in local organ regulation. Physiological paradoxes, such as preserved organ function after denervation or transplantation, challenge a ...
Mariana G. de Oliveira, Edson Antunes, Fabiola Zakia Monica, Gilberto De Nucci   +3 more
wiley   +1 more source

Dexmedetomidine Rapidly Relieves Stress‐Induced Hyperalgesia via Presynaptic α2‐Adrenergic Inhibition at Orbitofrontal–Insular Glutamatergic Synapses

MedComm, Volume 7, Issue 7, July 2026.
This study identified a maladaptive OFC–AIC glutamatergic circuit in stress‐induced hyperalgesia induction. This critical circuit provides an α2‐AR‐dependent braking target for dexmedetomidine to alleviate excessive glutamatergic transmission and hyperalgesia. ABSTRACT Dexmedetomidine (Dex), an α2‐adrenergic receptor (α2‐AR) agonist, is widely used for
Hui Rong, Yang‐Xun Zhang, Huijie Zhu, Yinyao Li, Yunfan Hou, Yun‐Yong Xie, Lu‐Yao Li, Bei‐Bei Zhang, Shu‐Tao Xie, Wei Zhang, Qi‐Peng Zhang, Xiao‐Yang Zhang, Jing‐Ning Zhu, Xiaoping Gu, Zhengliang Ma   +14 more
wiley   +1 more source

GLP‐1 Receptors Are Enriched in the Lymphatic Endothelium and Their Pharmacological Activation With Semaglutide Improves the Pumping Capacity of Lymphatic Vessels

Microcirculation, Volume 33, Issue 5, July 2026.
ABSTRACT Objectives Recent clinical studies have suggested that glucagon‐like peptide‐1 receptor (GLP‐1R) agonists may be effective therapies to treat or reduce the risk of developing secondary lymphedema. In this study, we aimed to (1) determine if GLP‐1Rs are present in the lymphatic vasculature and characterize their expression, and (2) assess the ...
Mary E. Schulz, Victoria L. Akerstrom, Joseph H. Dayan, Jorge A. Castorena‐Gonzalez   +3 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

On the Constitution of Tetrodotoxin

Chemical and Pharmaceutical Bulletin, 1958
Tsuda, Kyosuke, Kawamura, Masaaki, Hayatsu, Ryoichi   +2 more
openaire   +3 more sources

On the Structure of Tetrodotoxin

Chemical and Pharmaceutical Bulletin, 1964
Tsuda, Kyosuke, Tachikawa, Ryuji, Sakai, Kiyoshi, Tamura, Chihiro, Amakasu, Osamu, Kawamura, Masaaki, Ikuma, Susumu   +6 more
openaire   +3 more sources

Tetrodotoxin: a brief history.

Proceedings of the Japan Academy. Series B, Physical and biological sciences, 2008
Tetrodotoxin (TTX), contained in puffer, has become an extremely popular chemical tool in the physiological and pharmacological laboratories since our discovery of its channel blocking action in the early 1960s. This brief review describes the history of discovery of TTX action on sodium channels, and represents a story primarily of my own work.
openaire   +2 more sources

Effects of Tetrodotoxin on Safety, and Sensory and Respiratory Systems: A Dose-Escalating Study in Healthy Volunteers. [PDF]

Eur J Pain
Kuijpers KWK, Van Der Schrier R, Dahan A, Van Velzen M.   +3 more
europepmc   +1 more source