Serotonin (5-HT) plays pivotal roles in many physiological processes including reproduction of crustaceans, which are mediated 5-HT receptors. The distributions of 5-HT and its receptor have never been explored in Portunus pelagicus. To validate the targets which indirectly indicate the roles of 5-HT in this crab, we have investigated the distribution of 5-HT in the central nervous system (CNS) and ovary using immunohistochemistry and tissue expression of its receptor by RT-PCR. In the brain, 5-HT immunoreactivity (-ir) was detected in clusters 6, 7, 8, 11, 14, 15 and the fibers. In the ventral nerve cord (VNC), 5-HT-ir was detected in pairs of neurons and the fibers connected to the neurons. In the ovary, 5-HT-ir was intense in the oocyte step 1 (Oc1) and Oc2, and its intensity was slightly decreased in Oc3 and Oc4. The 5-HT receptor was molecularly characterized to be type 7, and it was strongly expressed in the eyestalk, brain, VNC, mature ovary and muscle. Due to the presence of 5-HT receptor we suggest that 5-HT acts primarily at the CNS and ovary, thus implicating its role in reproduction especially in the development of oocytes though its exact function in this crab needed to be explored further.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.acthis.2019.151457 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Pharmacological characterization of cannabidiol as a negative allosteric modulator of the 5-HT receptor.
Cell Signal
January 2025
Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada. Electronic address:
Promising clinical evidence suggests that psychedelic compounds, like lysergic acid diethylamide (LSD), have therapeutic value for treatment of psychiatric disorders. However, they often produce hallucinations and dissociative states, likely mediated by the serotonin (5-HT) receptor 5-HT, raising challenges regarding therapeutic scalability. Given the reported antipsychotic effects of cannabidiol (CBD) and its promiscuous binding at many receptors, we assessed whether CBD could modulate 5-HT signaling.
View Article and Find Full Text PDFExploring the mechanism and effective compounds of Changan Granule on diarrhea-predominant irritable bowel syndrome via regulating 5-hydroxytryptamine signaling pathway in brain-gut axis.
Phytomedicine
December 2024
School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China. Electronic address:
Background: Changan Granule (CAG) is a drug product developed from a traditional Chinese medicine (TCM) empirical prescription for diarrhea-predominant irritable bowel syndrome (IBS-D). The action mechanism and effective compounds of CAG in the treatment of IBS-D are not well understood.
Purpose: This study aimed to investigate the effectiveness, action mechanism and effective compounds of CAG for treating IBS-D.
Probing the Molecular Mechanisms of Kratom's Antipsychotic Effects through a Multi-modal Computational Approach.
Curr Pharm Des
January 2025
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri 38039, Turkey.
Background: Psychosis, marked by detachment from reality, includes symptoms like hallucinations and delusions. Traditional herbal remedies like kratom are gaining attention for psychiatric conditions. This was aimed at comprehending the molecular mechanisms of Kratom's antipsychotic effects utilizing a multi-modal computational approach.
View Article and Find Full Text PDFNovel therapeutic approaches targeting 5-HT7 receptors outside the central nervous system.
J Recept Signal Transduct Res
January 2025
Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.
Serotonin (5-HT) is a neurotransmitter found throughout the human body that regulates many physiological events arising from the brain and central nervous system (CNS), such as sleep and appetite. However, it has many other functions in systems outside. In addition to the routine expression of 5-HT7 receptors in CNS regions, such as the pituitary gland, spinal cord, and hippocampus, many studies have reported the expression of these receptors in pathological conditions outside.
View Article and Find Full Text PDFAcute administration of NLX-101, a Serotonin 1A receptor agonist, improves auditory temporal processing during development in a mouse model of Fragile X Syndrome.
J Neurodev Disord
January 2025
Graduate Neuroscience Program, University of California, Riverside, CA, USA.
Background: Fragile X syndrome (FXS) is a leading known genetic cause of intellectual disability and autism spectrum disorders (ASD)-associated behaviors. A consistent and debilitating phenotype of FXS is auditory hypersensitivity that may lead to delayed language and high anxiety. Consistent with findings in FXS human studies, the mouse model of FXS, the Fmr1 knock out (KO) mouse, shows auditory hypersensitivity and temporal processing deficits.
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!