Methaqualone produces large increases in plasma corticosterone in rats. This effect does not involve a direct stimulation of either the adrenal glands or pituitary, nor is it the result of a significant alteration in the clearance of circulating corticosterone. Methaqualone may therefore be influencing brain mechanisms which ultimately regulate hypothalamic CRH secretion, although a peripheral site of action has not yet been ruled out.
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http://dx.doi.org/10.1016/0091-3057(82)90046-6 | DOI Listing |
Cell Biochem Biophys
January 2025
Department of Zoology, University of Allahabad, Prayagraj, Uttar Pradesh, 211002, India.
The present study investigated the role of the neurotensin/NTS in the modulation of the lipopolysaccharide/LPS induced dysfunction of the sympatho-adrenal-medullary system/SAM using both the NTS receptor 1/NTSR agonist PD149163/PD and antagonist SR48692 /SR. Forty eight mice were maintained in eight groups; Group I/control, Groups II, III, IV, and VII received LPS for 5 days further Group III/IV/VII received PD low dose/PD, PD high dose /PD and SR for 28 days respectively. Group V/VI received similar only PD and PD dose respectively whereas Group VIII was exposed to only SR for 28 days.
View Article and Find Full Text PDFEndocrine
January 2025
H. N. B. Govt P.G. College, Department of Zoology, Naini, Uttar Pradesh, India.
Purpose: Chronic exposure to synthetic glucocorticoids/GCs, widely in use to treat many diseases, may compromise the hypothalamic-pituitary-adrenal/HPA axis leading to a condition of adrenal insufficiency/AI. This study demonstrates the efficacy of the melatonin/MEL in amelioration of chronic dexamethasone (DEX)-induced AI.
Methods: Mice (Parkes Strain/Male/8 weeks old/30-33 g) were maintained in four groups (10 mice/group) for 30 days: Group 1/Control received intraperitoneal (i.
Neuropharmacology
January 2025
Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), 29590 Málaga, Spain; Unidad de Gestión Clínica de Salud Mental, Hospital Regional Universitario de Málaga, 29010 Málaga, Spain. Electronic address:
Lysophosphatidic acid (LPA) and the endocannabinoid system (ECS) are critical lipid signaling pathways involved in emotional regulation and behavior. Despite their interconnected roles and shared metabolic pathways, the specific contributions of LPA signaling through the LPA receptor to stress-related disorders remain poorly understood. This study investigates the effects of LPA receptor deficiency on emotional behavior and neurotransmitter-related gene expression, with a focus on sex-specific differences, using maLPA-null mice of both sexes.
View Article and Find Full Text PDFSci Rep
January 2025
Laboratory of Pharmacology, Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan.
Recently, exposure to sounds with ultrasound (US) components has been shown to modulate brain activity. However, the effects of US on emotional states remain poorly understood. We previously demonstrated that the olfactory bulbectomized (OBX) rat depression model is suitable for examining the effects of audible sounds on emotionality.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Functional Biochemistry of the Nervous System, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow 117485, Russia.
Traumatic brain injury (TBI) is one of the primary causes of mortality and disability, with arterial blood pressure being an important factor in the clinical management of TBI. Spontaneously hypertensive rats (SHRs), widely used as a model of essential hypertension and vascular dementia, demonstrate dysfunction of the hypothalamic-pituitary-adrenal axis, which may contribute to glucocorticoid-mediated hippocampal damage. The aim of this study was to assess acute post-TBI seizures, delayed mortality, and hippocampal pathology in SHRs and normotensive Sprague Dawley rats (SDRs).
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