ObjectiveBy the study of histological feature of the regenerated nerve at different time after operation,to explore the mechanism of the peripheral nerve regenerationwhen the distal nerve stump is repaired by a smaller proximal end with artery sleeve briding.MethodsFour Wistar rats were served as the donors of arteris for bridging.Sixteen Wistar rats were randomized into 2 groups (n =8 per group).In control group,the right sciatic nerves were cut off and received epineurial suture.In experimental group,the right sciatic nerves received artery sleeve bridging in different size.HE staining was taken to observe the histological changes of the regenerated nerve at 7,14,21 and 28 days after operation.ResultsThe new regenerated axons need about 21 days to pass the bridging gap.Twenty-eight days after operation,the number of the regenerated axons in distal segment was greater than that of the proximal in the experimental group.The regenerated axons were matured and more regular.Conclusion The functional reserve of repaired nerve is exists when the proximal end is smaller than the distal in size by means of amplification effect.And the method of artery sleeve bridging provides a better situation for functional reserve.

0.05) .The total survival rate of N group and H I group was significantly higher than H II group(P0.05) .The abdominal stinking leak was more severe and death rate was higher in N group and H I group than H II group.Conclusion:Dry heat environment in the desert could obviously impair the total survival rate of pigs.

In traditional Chinese medicine, premature ovarian failure is attributed to the menstrual diseases such as amenorrhea, infertility, premenopausal and postmenopausal syndromes. The Zhejiang TCM gynecology schools are good at dialectical treatment of the above menstrual diseases similar to premature ovarian failure, especially Gynecology of Xiaoshan Zhulin Temple, Gynecology of Haining Chen Mushan, Gynecology of Ningbo Song's Family and Gynecology of Hangzhou He's Family. This paper summarizes the characteristics and experience of the four Zhejiang TCM gynecology schools in the dialectical treatment of premature ovarian failure, which can be used for reference.