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- W2051771732 abstract "Time-consuming studies in search of an endogenously occurring sleep substance started early in this century. The historical background of this field of sleep science is briefly reviewed. The search for “sleep-promoting substance (SPS)” started in 1972. A bioassay technique was developed based on the monitoring of the circadian sleep-waking rhythm in freely moving male rats. The partially purified SPS from the brainstem of 24-h sleep-deprived rats caused a reduction in locomotor activity and an increase in both slow wave sleep and paradoxical sleep, when nocturnally administered by either the intraperitoneal or intracer-ebro ventricular route. SPS is composed of at least 4 different effective fractions, including uridine. The sleep-inducing and sleep-maintaining potencies of several putative sleep substances were compared. Circadian variations in their effectiveness were apparant. The role of sleep substances in sleep regulation is discussed. Time-consuming studies in search of an endogenously occurring sleep substance started early in this century. The historical background of this field of sleep science is briefly reviewed. The search for “sleep-promoting substance (SPS)” started in 1972. A bioassay technique was developed based on the monitoring of the circadian sleep-waking rhythm in freely moving male rats. The partially purified SPS from the brainstem of 24-h sleep-deprived rats caused a reduction in locomotor activity and an increase in both slow wave sleep and paradoxical sleep, when nocturnally administered by either the intraperitoneal or intracer-ebro ventricular route. SPS is composed of at least 4 different effective fractions, including uridine. The sleep-inducing and sleep-maintaining potencies of several putative sleep substances were compared. Circadian variations in their effectiveness were apparant. The role of sleep substances in sleep regulation is discussed." @default.
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- W2051771732 date "1986-01-01" @default.
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- W2051771732 title "Sleep and sleep substances" @default.
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- W2051771732 doi "https://doi.org/10.1016/s0387-7604(86)80071-7" @default.
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