树qu排尿的昼夜节律及其在视交叉上核损毁后的变化

Circadlan Rhythm of Urination and Its Change After Suprachiasmatic Nucleus Lesion in Tree Shrews

摘要: 为探讨树qu视交叉上核是否参与泌尿昼夜节律的调控，对正常树qu及视交叉上核损毁后的树qu排尿的昼夜时间规律进行了观测分析。结果表明，正常树qu排尿呈现明显的昼夜节律——白天尿量为全天尿量的(88.52±15.40)%；视交叉上核损毁后，树qu排尿的昼夜节律明显变——白天尿量仅为全天尿量的(62.86±18.18)%，同时树qu的尿量(特别是夜间的尿量)明显憎多。以上结果说明视交叉上核在树qu体内也参与了泌尿昼夜节律的调节。

Abstract: Urine every 2 h in all day was consecutively collected from normal and with suprachiasmatic ucleus (SCN) lesions of tree shrews.The circadian rhythm of urination was analysed.The results showed that there was obvious circadian rhythm of urination in normal tree shrews.Uric amount of the day light was (88.52±15.40)% of the all day uric amount.The difference between day and night was rather significant.After SCN lesions,uric amount of the day was(62.86±18.18)% of the total uric amount of the all day.It showed that the circadian rhythm disappeared.In the meantime,the average uric amount of 24hour obviously increased and the uric amount increased at night.It suggested that SCN was an important oscillator of circadian rhythm in the tree shrew.