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5HT3 receptors quantified in brain of serotonin-transporter-deficient mice

Published in Pain and Central Nervous System Week, March 8th, 2004

Scientists have quantified 5HT3 receptors in the brains of serotonin-transporter-deficient mice.

"Mice deficient in the serotonin transporter (5HTT) display highly elevated extracellular 5HT levels. 5HT exerts its effects via at least fourteen different cloned 5HT receptors located pre- and postsynaptically. In contrast to the other 5HT receptors, the 5HT3 receptor is a ionotropic receptor with ligand-gated cation channel function," investigators in Germany report.

"Since G-protein-coupled 5HT receptors show extensive adaptive changes in 5HTT-deficient mice, we investigated whether 5HT3 receptors are also altered in these mice," said Rainald Mossner...

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