Gadsie
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- Joined
- Jun 19, 2016
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- 288
Insomnia Caused by Serotonin Depletion is Due to Hypothermia
It is known that the very effective serotonin "depletor" PCPA gives cats and rats total insomnia. The reason for this seems pretty unclear but this study gives a possible explanation:
PCPA treatment reduced brain 5-HT to less than 12% of that of controls. PCPA-treated mice housed at 20°C spent significantly more time awake than controls. However, core body temperature decreased from 36.5°C to 35.1°C. When housed at 33°C, body temperature remained normal, and total sleep duration, sleep architecture, and time in each vigilance state were the same as controls. When challenged with 4°C, PCPA-treated mice experienced a precipitous drop in body temperature, whereas control mice maintained a normal body temperature.
It is known that the very effective serotonin "depletor" PCPA gives cats and rats total insomnia. The reason for this seems pretty unclear but this study gives a possible explanation:
PCPA treatment reduced brain 5-HT to less than 12% of that of controls. PCPA-treated mice housed at 20°C spent significantly more time awake than controls. However, core body temperature decreased from 36.5°C to 35.1°C. When housed at 33°C, body temperature remained normal, and total sleep duration, sleep architecture, and time in each vigilance state were the same as controls. When challenged with 4°C, PCPA-treated mice experienced a precipitous drop in body temperature, whereas control mice maintained a normal body temperature.