Results 91 to 100 of about 5,023 (210)

In vitro and in vivo study of butyrylfentanyl and 4‐fluorobutyrylfentanyl in female and male mice: Role of the CRF1 receptor in cardiorespiratory impairment

open access: yesBritish Journal of Pharmacology, Volume 182, Issue 1, Page 104-130, January 2025.
Abstract Background and Purpose Fentanyl analogues have been implicated in many cases of intoxication and death with overdose worldwide. The aim of this study is to investigate the pharmaco‐toxicology of two fentanyl analogues: butyrylfentanyl (BUF) and 4‐fluorobutyrylfentanyl (4F‐BUF).
Sabrine Bilel   +10 more
wiley   +1 more source

Changes in neuromuscular structure and functions of human colon during ageing are region-dependent [PDF]

open access: yes, 2018
Objective: To determine if human colonic neuromuscular functions decline with increasing age.Design: Looking for non-specific changes in neuromuscular function, a standard burst of electrical field stimulation (EFS) was used to evoke neuronally mediated (
Ahmed, Shafi   +13 more
core   +2 more sources

The Fatal Mushroom Neurotoxin Muscarine is Released from a Harmless Phosphorylated Precursor upon Cellular Injury

open access: yesAngewandte Chemie International Edition, Volume 63, Issue 52, December 20, 2024.
l‐(+)‐Muscarine is one of the most toxic mushroom metabolites. We identified its congener 4’‐phosphomuscarine in the fool's funnel and in various fiber cap mushrooms, and chemically and pharmacologically characterized this new natural product. As hydrolysis of its ester releases muscarine, our results help estimate the true toxin content of these ...
Sebastian Dörner   +7 more
wiley   +1 more source

Advancing Neural Networks: Innovations and Impacts on Energy Consumption

open access: yesAdvanced Electronic Materials, Volume 10, Issue 12, December 2024.
A comparative study of ANN and SNN including biological neural networks is presented. An inefficiency of 5–8 orders of magnitude is indicated for modern ANN approaches, with the worst Transformer ANN over CPU. The most efficient implementation of the SNNs is biological neurons with only 100 fJ per synaptic weight update, next is inorganic Mosaic ...
Alina Fedorova   +9 more
wiley   +1 more source

Regulation of Src Family Tyrosine Kinases in the Rat Striatum by Muscarinic Acetylcholine Receptors [PDF]

open access: yes, 2017
Acetylcholine is an important neurotransmitter in the mammalian brain. This transmitter binds to muscarinic acetylcholine receptors (mAChR) to regulate activity of a variety of intracellular signaling molecules.
Faris, Hunter
core  

Morphologic evaluation and Ca2+ mobilization by glicose and acetylcholine in human pancreatic cells [PDF]

open access: yes, 2007
AIMS: The proposal of this study was to analyze morphology of the organelles and cytoskeleton in human pancreatic cells cultured and the mobilization of the cytosolic calcium ([Ca2+]c) in response to glucose and ACh by fluorimetry method.
Cardoso, Daniela Espinha   +5 more
core   +3 more sources

The varieties of the psychedelic experience: A preliminary study of the association between the reported subjective effects and the binding affinity profiles of substituted phenethylamines and tryptamines [PDF]

open access: yes, 2018
Classic psychedelics are substances of paramount cultural and neuroscientific importance. A distinctive feature of psychedelic drugs is the wide range of potential subjective effects they can elicit, known to be deeply influenced by the internal state of
Erowid, Earth   +6 more
core   +2 more sources

Photo‐BQCA: Positive Allosteric Modulators Enabling Optical Control of the M1 Receptor

open access: yesAngewandte Chemie International Edition, Volume 63, Issue 47, November 18, 2024.
Photoswitchable allosteric modulators for the Class A of a G protein‐coupled receptor, themuscarinic acetylcholine receptor subtype 1 (M1R) were developed based on the allosteric modulator benzyl quinolone carboxylic acid (BQCA) exploiting its flat structure–activity relationships.
Hubert Gerwe   +8 more
wiley   +1 more source

Novel fused arylpyrimidinone based allosteric modulators of the M1 muscarinic acetylcholine receptor [PDF]

open access: yes, 2016
Benzoquinazolinone 1 is a positive allosteric modulator (PAM) of the M1 muscarinic acetylcholine receptor (mAChR), which is significantly more potent than the prototypical PAM, 1-(4-methoxybenzyl)-4-oxo-1,4-dihydroquinoline- 3-carboxylic acid (BQCA). In
Capuano, Ben   +8 more
core   +2 more sources

Early postnatal low-protein nutrition, metabolic programming and the autonomic nervous system in adult life [PDF]

open access: yes, 2012
Protein restriction during lactation has been used as a rat model of metabolic programming to study the impact of perinatal malnutrition on adult metabolism.
Clarice Gravena   +3 more
core   +1 more source

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