Bennis M, Repérant J, Ward R, Wasowicz M
Laboratoire de Neurosciences des Compartement, Faculté des Sciences Semlalia, Université Cadi Ayya, Marrakech, Maroc.
J Hirnforsch. 1996;37(2):281-8.
The NADPH-diaphorase histochemical technique, which reflects the activity of nitric oxide synthase was used in order to map the corresponding chameleon brain structures. In the forebrain, stained neurons were found particularly in the dorsal ventricular ridge and the ventral telencephalon, but no stained somata were observed in the cortical areas nor in the septum. In the midbrain, few NADPH-stained structures were seen. The stained cells were confined in the nucleus dorsomedialis, the nucleus geniculatus lateralis dorsalis, and the ventromedial hypothalamus. More caudally, some stained neurons were observed in the nucleus opticus mediodorsalis hypothalami posterior. In the brainstem, NADPH-stained cells were located in the optic tectum, the torus semicircularis, the substantia nigra, the ventral tegmental area, and all motor nuclei of the cranial nerves. The present results showed some striking differences and similarities with birds and mammals. Moreover, the presence of NADPH-staining in most of retinofugal, retinopetal and oculomotor nuclei suggests that nitric oxide system plays a prominent role in the visual and oculomotor functions.
为了描绘变色龙相应的脑结构，采用了反映一氧化氮合酶活性的NADPH黄递酶组织化学技术。在前脑，染色神经元尤其见于背侧室嵴和腹侧端脑，但在皮质区域和隔区未观察到染色的胞体。在中脑，可见少数NADPH染色结构。染色细胞局限于背内侧核、外侧背侧膝状核和腹内侧下丘脑。更靠尾侧的部位，在视交叉上核后内侧下丘脑核中观察到一些染色神经元。在脑干，NADPH染色细胞位于视顶盖、半规管隆起、黑质、腹侧被盖区以及所有脑神经运动核。目前的结果显示与鸟类和哺乳动物有一些显著的差异和相似之处。此外，在大多数视网膜传出、视网膜传入和动眼神经核中存在NADPH染色，这表明一氧化氮系统在视觉和动眼功能中起重要作用。
