| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
In the maintenance treatment of schizophrenia, prescription regimens and new drugs are designed to keep drug concentrations as constant as possible in order for antipsychotics to block the dopamine D2 receptor in the brain. However, our results have revealed that the appearance and disappearance of hallucinations within a day in patients with schizophrenia is not always related to the degree of blockade of dopamine D2 receptors by antipsychotics, but rather the presence of circadian rhythms. Moreover, hallucinations more frequently occurred at night. Thus, if psychotic symptoms remain after the acute phase treatment of schizophrenia, it does not seem necessary to sustain blockade of dopamine receptors as in the acute phase; rather, the treatment focusing on circadian rhythm of symptoms may be effective.
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