2002 Fiscal Year Final Research Report Summary
An epidemiological on the relationships between artificial lights and metabolism of stress-related hormones
| Project/Area Number |
11470115
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Public health/Health science
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| Research Institution | National Institute for Environmental Studies |
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Principal Investigator |
KABUTO Michinori National Institute for Environmental Studies Acting Director for Health Researches, 環境健康研究領域, 主席研究官 (00113481)
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| Co-Investigator(Kenkyū-buntansha) |
KUROKAWA Yoshika National Institute for Environmental Studies Environmental Health Science Division Senior Researcher, 環境健康研究領域, 主任研究員 (30205231)
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| Project Period (FY) |
1999 – 2002
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| Keywords | melatonin / light at night / biological rhythm / melatonin hypothesis / estrogen |
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| Research Abstract |
In order to examine possible relationship between exposure to artificial light at night and melatonin function in humans, we carried out four studies. First, we tried to search for physiological parameters for indicating a phaseof individual intrinsic rhythm instead of blood melatonin, and did not succeed in finding such parameter within heart rate dynamics and skin color fluctuation. Second, we performed experimental studies of measuring urinary concentrations of melatonin in volunteers in two nights, bright night and dark night, and we could not observe any significant difference between the two values of melatonin. Third, we carried out epidemiological study.... Finally, we evaluated the level of exposure to artificial light at night in Japanese residences, and we ....
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Research Products
(6 results)
