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Najam A Sharif, Michelle Senchyna
PURPOSE: To determine the relative density and tissue localization of mRNAs for serotonin (5-hydroxytryptamine; 5HT) receptor subtypes in human ocular tissues and correlate with their possible functions in the eye. METHODS: Total RNA was extracted from human ocular tissues samples from multiple donors and transcribed into cDNA. An optimized reverse transcriptase polymerase chain reaction (RT-PCR) procedure was then used to amplify the signals using primers designed against human 5HT receptor cDNAs...
2006: Molecular Vision
S Krantic, P Guerrier, F Dubé
The neurohormone serotonin (5-hydroxytryptamine, 5HT) triggers meiosis reinitiation in prophase-arrested oocytes of Spisula solidissima. The original pharmacological profile of this response prompted us to examine whether it involved a novel type of 5HT receptor. In order to characterize these putative receptors, we performed [3H]5HT binding assays. Given the complexity of oocyte surface architecture, [3H]5HT-specific binding was measured in both plasma membrane and vitelline envelope fractions. Our data reveal the existence of a single class of 5HT-specific binding sites in each fraction...
April 15, 1993: Journal of Biological Chemistry
J L Plassat, U Boschert, N Amlaiky, R Hen
Serotonin (5-HT) is a neuromodulator that mediates a wide range of physiological functions by activating multiple receptors. Using a strategy based on amino acid sequence homology between 5-HT receptors that interact with G proteins, we have isolated a cDNA encoding a new serotonin receptor from a mouse brain library. Amino acid sequence comparisons revealed that this receptor was a distant relative of all previously identified 5-HT receptors; we therefore named it 5HT5. When expressed in Cos-7 cells and NIH-3T3 cells, the 5HT5 receptor displayed a high affinity for the serotonergic radioligand [125I]LSD...
December 1992: EMBO Journal
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