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Restraint stress effects on glutamate signaling protein levels in the rats' frontal cortex: Does β1 adrenoceptor activity matter?
Front Pharmacol
January 2025
Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.
Introduction: Stress-evoked dysfunctions of the frontal cortex (FC) are correlated with changes in the functioning of the glutamatergic system, and evidence demonstrates that noradrenergic transmission is an important regulator of this process. In the current study, we adopted a restraint stress (RS) model in male Wistar rats to investigate whether the blockade of β1 adrenergic receptors (β1AR) with betaxolol (BET) in stressed animals influences the body's stress response and the expression of selected signaling proteins in the medial prefrontal cortex (mPFC).
Methods: The study was divided into two parts.
Homeostatic regulation of a motor circuit through temperature sensing rather than activity sensing.
bioRxiv
January 2025
University of Missouri-Columbia, Division of Biological Sciences, Missouri, United States of America.
Homeostasis is a driving principle in physiology. To achieve homeostatic control of neural activity, neurons monitor their activity levels and then initiate corrective adjustments in excitability when activity strays from a set point. However, fluctuations in the brain microenvironment, such as temperature, pH, and other ions represent some of the most common perturbations to neural function in animals.
View Article and Find Full Text PDFScaled and Weighted Laplacian Matrices as Functional Descriptors for GPCR Ligands.
J Comput Chem
January 2025
Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán, CDMX, Mexico.
The G protein-coupled receptor (GPCR) pharmacology accounts for a significant field in research, clinical studies, and therapeutics. Computer-aided drug discovery is an evolving suite of techniques and methodologies that facilitate accelerated progress in drug discovery and repositioning. However, the structure-activity relationships of molecules targeting GPCRs are highly challenging in many cases since slight structural modifications can lead to drastic changes in biological functionality.
View Article and Find Full Text PDFβ-adrenergic receptor-induced E-S potentiation in the dorsal and ventral hippocampus.
Front Synaptic Neurosci
December 2024
Laboratory of Physiology, Department of Medicine, University of Patras, Patras, Greece.
β-adrenergic receptors (β-ARs) play a critical role in modulating learning, memory, emotionality, and long-term synaptic plasticity. Recent studies indicate that β-ARs are necessary for long-term potentiation (LTP) induction in the ventral hippocampus under moderate synaptic activation conditions that do not typically induce LTP. To explore potential dorsoventral differences in β-AR-mediated effects, we applied the β-AR agonist isoproterenol (10 μM, 30 min) to dorsal and ventral hippocampal slices, recording field excitatory postsynaptic potentials (fEPSPs) and population spikes (PSs) from the CA1 region.
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