Chiba A, Oka S, Honma Y
Department of Biology, School of Dentistry at Niigata, Nippon Dental University, Japan.
Neurosci Lett. 1996 Jul 26;213(1):49-52. doi: 10.1016/0304-3940(96)12828-7.
We observed ontogenetic changes of neuropeptide Y (NPY)-like-immunoreactivity in the terminal nerve (TN) of the chum salmon, a teleost, and the cloudy dogfish, an elasmobranch. In the chum salmon, NPY-like-immunoreactive (NPY-IR) cells first appeared in the olfactory placode of embryos at 16 days after fertilization, and then extended sequentially and centrally in the olfactory system. Colocalization of NPY- and gonadotropin-releasing hormone (GnRH)-like-immunoreactivities was also observed in TN ganglion cells. In the cloudy dogfish, NPY-IR cells first appeared in the rudimental TN ganglion of the embryo at the 40 mm stage. Then, the NPY-IR cells and fibers in the TN system increased in density during late embryonic periods. Colocalization of NPY- and GnRH-like-immunoreactivities in TN ganglion cells was not found in the developing or the adult dogfish.
我们观察了鲑鱼（一种硬骨鱼）和云斑星鲨（一种软骨鱼）终末神经（TN）中神经肽Y（NPY）样免疫反应性的个体发生变化。在鲑鱼中，NPY样免疫反应性（NPY-IR）细胞在受精后16天首次出现在胚胎的嗅基板中，然后在嗅觉系统中依次向中央延伸。在TN神经节细胞中也观察到NPY与促性腺激素释放激素（GnRH）样免疫反应性的共定位。在云斑星鲨中，NPY-IR细胞在胚胎40毫米阶段首次出现在原始TN神经节中。然后，在胚胎后期，TN系统中的NPY-IR细胞和纤维密度增加。在发育中的或成年的星鲨中，未发现TN神经节细胞中NPY与GnRH样免疫反应性的共定位。
