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The phosphorylated analogue of DSIP enhances slow wave sleep and paradoxical sleep in unrestrained rats

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Abstract

Continued 10-h nocturnal intracerebroventricular infusion of 0.5 nmol P-DSIP, the phosphorylated analogue of delta-sleep-inducing peptide (DSIP), significantly increased slow wave sleep (22%) and paradoxical sleep (81%) in unrestrained rats. The increase in the amount of sleep was largely due to an increase in the number of sleep episodes. Larger and smaller doses were ineffective in doses ranging from 0.025 to 25 nmol. The sleep-promoting potency of P-DSIP was 5 times greater than that of DSIP compared by the same assay.

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Kimura, M., Inoué, S. The phosphorylated analogue of DSIP enhances slow wave sleep and paradoxical sleep in unrestrained rats. Psychopharmacology 97, 35–39 (1989). https://doi.org/10.1007/BF00443409

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