ADRENERGIC-NERVE FIBERS IN THE HUMAN FETAL SCIATIC-NERVE

被引:0
作者
KOISTINAHO, J
机构
来源
ACTA ANATOMICA | 1991年 / 140卷 / 04期
关键词
HUMAN; SCIATIC NERVE; ADRENERGIC; NEUROPEPTIDE-Y; ENDONEURIUM; EPIPERINEURIUM; DEVELOPMENT;
D O I
暂无
中图分类号
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号
100101 ;
摘要
The adrenergic inervation was studied in the human sciatic nerve at the gestational age of 16, 17, 18 and 21 weeks. Formaldehyde-induced catecholamine fluorescence, tyrosine hydroxylase (TH) and neuropeptide Y (NPY) peroxidase-antiperoxidase immunohistochemistry methods were used. At the gestational age of 16, 17 and 18 weeks no adrenergic or NPY-positive nerve fibers were seen. At 21 weeks both fluorescence microscopy and TH immunohistochemistry showed adrenergic nerve fibers around arterioles in the epiperineurium and single nerve fibers in the endoneurium not related to blood vessels. The number of adrenergic nerve fibers appeared to be higher in the sciatic than in the tibial segment of the nerve. At this age, as at earlier stages of gestation, no NPY-positive nerve fibers were seen either in the epiperineurium or in the endoneurium. The results suggest that adrenergic nerve fibers may be associated with the epiperineurial blood vessels in the human sciatic nerve, and that the innervation starts to develop between 18 and 21 weeks of gestational age.
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页码:369 / 372
页数:4
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