Serotonin and its metabolism in basal deuterostomes: insights from <i>Strongylocentrotus purpuratus</i> and <i>Xenoturbella bocki</i>. Squires, L. N., Rubakhin, S. S., Wadhams, A. A., Talbot, K. N., Nakano, H., Moroz, L. L., & Sweedler, J. V. Journal of Experimental Biology, 213(15):2647–2654, August, 2010.
Serotonin and its metabolism in basal deuterostomes: insights from <i>Strongylocentrotus purpuratus</i> and <i>Xenoturbella bocki</i> [link]Paper  doi  abstract   bibtex   
SUMMARY Serotonin (5-HT), an important molecule in metazoans, is involved in a range of biological processes including neurotransmission and neuromodulation. Both its creation and release are tightly regulated, as is its removal. Multiple neurochemical pathways are responsible for the catabolism of 5-HT and are phyla specific; therefore, by elucidating these catabolic pathways we glean greater understanding of the relationships and origins of various transmitter systems. Here, 5-HT catabolic pathways were studied in Strongylocentrotus purpuratus and Xenoturbella bocki, two organisms occupying distinct positions in deuterostomes. The 5-HT-related compounds detected in these organisms were compared with those reported in other phyla. In S. purpuratus, 5-HT-related metabolites include N-acetyl serotonin, γ-glutamyl-serotonin and 5-hydroxyindole acetic acid; the quantity and type were found to vary based on the specific tissues analyzed. In addition to these compounds, varying levels of tryptamine were also seen. Upon addition of a 5-HT precursor and a monoamine oxidase inhibitor, 5-HT itself was detected. In similar experiments using X. bocki tissues, the 5-HT-related compounds found included 5-HT sulfate, γ-glutamyl-serotonin and 5-hydroxyindole acetic acid, as well as 5-HT and tryptamine. The sea urchin metabolizes 5-HT in a manner similar to both gastropod mollusks, as evidenced by the detection of γ-glutamyl-serotonin, and vertebrates, as indicated by the presence of 5-hydroxyindole acetic acid and N-acetyl serotonin. In contrast, 5-HT metabolism in X. bocki appears more similar to common protostome 5-HT catabolic pathways.
@article{squires_serotonin_2010,
	title = {Serotonin and its metabolism in basal deuterostomes: insights from \textit{{Strongylocentrotus} purpuratus} and \textit{{Xenoturbella} bocki}},
	volume = {213},
	issn = {1477-9145, 0022-0949},
	shorttitle = {Serotonin and its metabolism in basal deuterostomes},
	url = {https://journals.biologists.com/jeb/article/213/15/2647/9729/Serotonin-and-its-metabolism-in-basal},
	doi = {10.1242/jeb.042374},
	abstract = {SUMMARY
            Serotonin (5-HT), an important molecule in metazoans, is involved in a range of biological processes including neurotransmission and neuromodulation. Both its creation and release are tightly regulated, as is its removal. Multiple neurochemical pathways are responsible for the catabolism of 5-HT and are phyla specific; therefore, by elucidating these catabolic pathways we glean greater understanding of the relationships and origins of various transmitter systems. Here, 5-HT catabolic pathways were studied in Strongylocentrotus purpuratus and Xenoturbella bocki, two organisms occupying distinct positions in deuterostomes. The 5-HT-related compounds detected in these organisms were compared with those reported in other phyla. In S. purpuratus, 5-HT-related metabolites include N-acetyl serotonin, γ-glutamyl-serotonin and 5-hydroxyindole acetic acid; the quantity and type were found to vary based on the specific tissues analyzed. In addition to these compounds, varying levels of tryptamine were also seen. Upon addition of a 5-HT precursor and a monoamine oxidase inhibitor, 5-HT itself was detected. In similar experiments using X. bocki tissues, the 5-HT-related compounds found included 5-HT sulfate, γ-glutamyl-serotonin and 5-hydroxyindole acetic acid, as well as 5-HT and tryptamine. The sea urchin metabolizes 5-HT in a manner similar to both gastropod mollusks, as evidenced by the detection of γ-glutamyl-serotonin, and vertebrates, as indicated by the presence of 5-hydroxyindole acetic acid and N-acetyl serotonin. In contrast, 5-HT metabolism in X. bocki appears more similar to common protostome 5-HT catabolic pathways.},
	language = {en},
	number = {15},
	urldate = {2021-07-27},
	journal = {Journal of Experimental Biology},
	author = {Squires, Leah N. and Rubakhin, Stanislav S. and Wadhams, Andinet Amare and Talbot, Kristen N. and Nakano, Hiroaki and Moroz, Leonid L. and Sweedler, Jonathan V.},
	month = aug,
	year = {2010},
	pages = {2647--2654},
}

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