鸣禽间脑听觉卵圆核壳区脑啡肽的免疫组织化学？…

应用尼氏染色及脑啡肽免疫组织化学方法研究了鸣禽白腰文鸟（Ｌｏｎｃｈｕｒａ ｓｔｒｉａｔａ）间脑听觉中－卵圆核（ｎ．Ｏｖｏｉｄａｌｉｓ Ｏｖ）中心核及其壳区（ｓｈｅｌｌ）的形态学特征，再应用神经示踪剂ＢＤＡ（ｂｉｏｔｉｏｎｙｌａｔｅｄ ｄｅｘｔｒａｎ ａｍｉｎｅ）对壳区的神经投射了研究，结果发现（１）脑啡肽免疫组织方法尼氏染色更能区分中心核及壳区，仅Ｏｖ壳区存在脑啡肽纤维或细胞，而忠订户站不存在；

MET-ENKAPHALINERGIC IMMUNOREACTIVITY AND NEURAL CONNECTIVITY OF THE SHELL REGIONS OF THALAMIC NUCLEUS OVOIDALIS IN THE SONGBIRD

By use of Nissl staining and Met enkaphalinergic immunochemistry, the auditory relay thalamic nucleus, ovoidalis (Ov) is studied in the songbird,Lonchura striata. Then the neural projections of the shell regions of Ov are investigated by employment of a neural tract tracer, biotinated dextran amine (BDA). The results are as follows: (1) The Ov core and the Ov shell could be distinguished by use of Nissl staining and Met enkaphalinergic immunochemistry. The enkaphalinergic fibers and cells are distributed in the Ov shell, but absent in the Ov core; (2) The Ov shell sends fibers to the telencephalon, the auditory Field L2b, L1 and L3, and to the hypothalamus, the ventromedial nucleus (VMN) and the nucleus anterior medialis hypothalumi (AM); (3) The Ov shell receives projections from the nucleus robust archistriatum (RA) in the telencephalon and from the interface between the nucleus intercollicularis (ICo) and the mecencepalicus lateralis pars dorsalis (MLd) in the midbrain, respectively. It is first shown at present study that the Ov shell in the songbird is also connected with the hypothalamus as that in the non songbird reported previously. The results provide neural basis for the changes of endocrine activities caused by auditory vocalization regulation.