The effects of the serotonin1A (5-HT1A) receptor agonist buspirone on the plasma glucose and pancreatic hormones insulin and glucagon were investigated in rats. Buspirone elicited significant hyperglycemia and hyperglucagonemia, although it did not affect the insulin levels. Adrenodemedullation inhibited both the increase in blood glucose and glucagon levels. These results indicate that buspirone-induced hyperglycemia and hyperglucagonemia are mediated by adrenaline release from the adrenal gland.
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http://dx.doi.org/10.1254/jjp.60.145 | DOI Listing |
Eur J Pharmacol
January 2025
Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
Buspirone, a commonly prescribed medication for generalized anxiety disorder (GAD), is gaining attention for its narrow window of side effects such as lack of physical dependence, non-sedative properties as compared to other anxiolytic drugs. Its dose-specific therapeutic effects beyond anxiety highlights its clinical significance. Pharmacologically, buspirone activates serotonin-1A pre-synaptic autoreceptors and post-synaptic heteroreceptors which modulate serotonergic neurotransmission induced behavioral changes such as anxiolytic and nootropic effects.
View Article and Find Full Text PDFBehav Pharmacol
October 2024
Neuroscience Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi.
Omeprazole, a drug of choice for the management of gastric hyperacidity, influences serotonergic neurotransmission in brain regions and its long-term use is known to cause stress-related behavioral deficits including anxiety. Aim of the current study was to explore the effects of omeprazole treatment on immobilization-induced anxiety in rats, specifically on the role of serotonin (5-HT). In view of the role of serotonin-1A (5-HT1A) autoreceptor in the availability of 5-HT in brain regions, mRNA expression of this autoreceptor was performed in raphe nuclei.
View Article and Find Full Text PDFNeuroscience
August 2024
Departamento de Psicologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo (USP), 14040-901 Ribeirão Preto, SP, Brasil; Departamento de Psicologia, Uni-FACEF, 14401-135, Franca, SP, Brasil. Electronic address:
Despite significant advances in the study of fear and fear memory formation, little is known about fear learning and expression in females. This omission has been proven surprising, as normal and pathological behaviors are highly influenced by ovarian hormones, particularly estradiol and progesterone. In the current study, we investigated the joint influence of serotonin (5-HT) neurotransmission and estrous cycle phases (low or high levels of estradiol and progesterone) on the expression of conditioned fear in a group of female rats that were previously divided according to their response to stressful stimuli into low or high anxiety-like subjects.
View Article and Find Full Text PDFEur J Neurosci
May 2024
Memorial University of Newfoundland and Labrador, St. John's, Newfoundland, Canada.
Schizophrenia is a psychotic disorder with an increasing prevalence and incidence over the last two decades. The condition presents with a diverse array of positive, negative, and cognitive impairments. Conventional treatments often yield unsatisfactory outcomes, especially with negative symptoms.
View Article and Find Full Text PDFNaunyn Schmiedebergs Arch Pharmacol
May 2024
Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
The serotonin-1A receptors (5-HT) in the two cerebral hemispheres are differentially involved in memory. The distribution of 5-HT receptors in the left and right amygdala is different. Furthermore, evidence shows that the 5-HT receptors in the left and right amygdala work differently in memory function.
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