نتایج جستجو برای: serotonin 5

تعداد نتایج: 1235556  

Journal: :The European Journal of Neuroscience 2009
Craig P Blomeley Enrico Bracci

Fast-spiking interneurons (FSIs) control the output of the striatum by mediating feed-forward GABAergic inhibition of projection neurons. Their neuromodulation can therefore critically affect the operation of the basal ganglia. We studied the effects of 5-hydroxytryptamine (5-HT, serotonin), a neurotransmitter released in the striatum by fibres originating in the raphe nuclei, on FSIs recorded ...

Journal: :Journal of Analytical Oncology 2021

Abstract: Intracellular tryptophan (Trp) is catabolized to a large repertoire of metabolites via two major pathways: indoleamine and 2, 3-dioxygenases (IDO/TDO) Trp hydroxylase (TPH) pathways. The catabolites possess diverse biological activities carry out various physiological functions. Several such as kynurenine (Kyn) serotonin promote while melatonin 5-methoxytryptophan (5-MTP) suppress can...

2010
Zofia E. Gagnon Sherry Dingman Rhys N. Thomas

Auxin a plant growth hormone, has a metabolic pathway that includes molecules and enzymes like those in animal brains. In this study, tomato plant seedlings (Lycopersicon esculenta) were used to investigate the fate of fluorine-tagged 5-hydroxytryptophan (PF-5-HTP) being developed for fluorine spectroscopy and imaging. Seedlings were treated with high or low concentrations of 5-HTP or PF-5-HTP ...

Journal: :The European respiratory journal 2008
A Fabre J Marchal-Sommé S Marchand-Adam C Quesnel R Borie M Dehoux C Ruffié J Callebert J-M Launay D Hénin P Soler B Crestani

Serotonin (5-hydroxytryptamine; 5-HT) is known to increase proliferation and collagen synthesis by fibroblasts. Two receptor subtypes, 5-HT2A and 5-HT2B, have been shown to play the most important roles in the lung. In the present study, the role of serotonin in lung fibrosis was investigated using the bleomycin mouse model. Serotonin concentrations in lung homogenates increased significantly o...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2005
Johnny Porter Michael Van Vrancken Connie Corll Hilary Thompson Frank Svec

The 5 HT(1A) receptor agonist 8-hydroxy-2-(di-n-propylamino)-tetraline (8-OH-DPAT) increases the food intake of satiated Zucker rats, both lean and obese. Associated with this increased intake are changes in the hypothalamic content of serotonin and its metabolite, 5-HIAA (5-hydroxyindole-3-acetic acid); serotonin is increased while the level of 5-HIAA is decreased. Analysis of individual 5-HIA...

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