The effect of bath application of dopamine (DA) and serotonin (HT) was studied in the isolated perfused dorsal root ganglia (DRG) of 30-36 days old rats by means of intracellular technique. 92% of investigated cells responded to the application of DA and 87%--to HT. DA and HT evoked depolarization in most of cells (64.6 and 73.7% of cells, respectively). Responses were dose-dependent and reversible. Depolarization caused by the DA and HT application was accompanied by a decrease in the input resistance (Rm) and alteration of the action potential shape. Hyperpolarization was followed by an increase of Rm. It was demonstrated that both DA and HT influenced predominantly DRG neurons with membrane biophysical characteristics inherent in small cells. Possibility of modulation of the afferent impulsation on the level of the primary sensory neurons is supposed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Effect of Screen Time and Sugar Consumption Reduction on Sleep Bruxism in Children: A Randomised Clinical Trial.
J Oral Rehabil
January 2025
Universidad CES, Medellín, Colombia.
Objective: Sleep bruxism (SB) is associated with alterations in dopamine and serotonin, which are related to increased consumption of added sugar and overuse of screens. The aim of this study was to compare the effect of the interventions 'Food, Fun and Family' (FFF) and Counselling and Education (CE) on the frequency of SB in children.
Methods: A randomised clinical trial was conducted.
Population pharmacokinetics of blonanserin in Japanese adolescent and adult patients with schizophrenia.
Drug Metab Pharmacokinet
November 2024
Clinical Research, Drug Development Division, Sumitomo Pharma Co., Ltd., 33-94, Enoki-cho, Suita, Osaka, 564-0053, Japan. Electronic address:
The second-generation antipsychotic blonanserin is a highly selective, full antagonist of dopamine D and D and serotonin 5-HT receptors. It is currently prescribed for patients with schizophrenia in Japan. We aimed to develop a population pharmacokinetic model of oral blonanserin, including data from 12 to 77 years old patients, to assess the covariates that influence blonanserin pharmacokinetics and evaluate appropriate dosage regimens in adolescents versus adults.
View Article and Find Full Text PDFEmotional words evoke region- and valence-specific patterns of concurrent neuromodulator release in human thalamus and cortex.
Cell Rep
January 2025
School of Neuroscience, Virginia Tech, Blacksburg, VA 24060, USA. Electronic address:
Words represent a uniquely human information channel-humans use words to express thoughts and feelings and to assign emotional valence to experience. Work from model organisms suggests that valence assignments are carried out in part by the neuromodulators dopamine, serotonin, and norepinephrine. Here, we ask whether valence signaling by these neuromodulators extends to word semantics in humans by measuring sub-second neuromodulator dynamics in the thalamus (N = 13) and anterior cingulate cortex (N = 6) of individuals evaluating positive, negative, and neutrally valenced words.
View Article and Find Full Text PDFBackground: Psychotic symptoms may manifest in Alzheimer's disease (AD), especially in advanced disease stages and in patients with higher polygenic risk scores for schizophrenia (SCZ-PRS). Such genetic risk seems also to influence grey matter volume (GMV) alterations in patients with psychosis. Since multiple neurotransmitter systems, namely dopamine (DA) and serotonin (5-HT), have been implicated in psychosis, the aim of this study was to investigate whether a SCZ-PRS may explain variance in the association between GMV and the cerebral distribution of DA and 5-HT.
View Article and Find Full Text PDFBackground: Down syndrome (DS, trisomy 21) is the most frequent genetic cause of intellectual disability (ID), prevalent in approximately 1 in 900 live births (Loane et al., 2013). People with DS are at high risk to develop Alzheimer's disease dementia (AD) (Lott & Head, 2001).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!