| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Research Abstract |
To elucidate the physiological significance and controlling mechanism of peripheral clocks, the biological clocks in obese diabetic ob/ob mice were studied. The impairment of circadian clocks in ob/ob mice was (1) found in the peripheral tissues, but not in the suprachiasmatic nucleus (central clock), (2) detectable before the development of metabolic abnormalities, and (3) improved by short-term treatment with leptin. These results suggest that the impairment of peripheral clocks is not a result of metabolic derangement and that leptin signaling is important for maintaining the peripheral clock functions.
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