Michaloudi H, Dinopoulos A, Karamanlidis A N, Papadopoulos G C, Antonopoulos J
Department of Anatomy, School of Veterinary Medicine, University of Thessaloniki, Greece.
Anat Embryol (Berl). 1988;178(3):259-70. doi: 10.1007/BF00318229.
Cortical and brain stem neurons projecting to the spinal cord in the hedgehog were studied by means of the horseradish peroxidase (HRP) tracing method. HRP injections were placed in the first cervical segments, in the cervical enlargement (C5-T3) and in the lumbar enlargement. Following injections in the first cervical segments and in the cervical enlargement labelled neurons were observed in the somatic motor and somatic sensory cortices, the paraventricular and the dorsomedial hypothalamic nucleus, the lateral hypothalamic area, the nuclei of field H of Forel, the red nucleus, the mesencephalic reticular formation, the deep layers of the superior colliculus, the Edinger-Westphal nucleus, the periaqueductal grey, the mesencephalic trigeminal nucleus, the loci coeruleus and subcoeruleus, the nuclei raphe dorsalis, centralis superior, raphe magnus, raphe pallidus, and raphe obscurus, the rhombencephalic reticular formation, the lateral, medial and caudal vestibular nuclei, the nucleus ambiguus, the nucleus of the solitary tract and the gracile nucleus. After HRP injections in the lumbar enlargement, labelled neurons were not found in the cortex, the dorsomedial hypothalamic nucleus, the nuclei of field H of Forel, the superior colliculus and the mesencephalic trigeminal nucleus. These results show that cortical and brain stem projections to the spinal cord are comparable to those described in other species.
采用辣根过氧化物酶（HRP）追踪法，对刺猬中投射至脊髓的皮质和脑干神经元进行了研究。将HRP注射到第一颈段、颈膨大（C5 - T3）和腰膨大。在第一颈段和颈膨大注射后，在躯体运动和躯体感觉皮质、室旁核和下丘脑背内侧核、下丘脑外侧区、Forel氏H区核、红核、中脑网状结构、上丘深层、动眼神经副核、导水管周围灰质、中脑三叉神经核、蓝斑和蓝斑下核、背侧中缝核、中央上核、中缝大核、中缝苍白核和中缝隐核、后脑网状结构、外侧、内侧和尾侧前庭核、疑核、孤束核和薄束核中观察到标记神经元。在腰膨大注射HRP后，在皮质、下丘脑背内侧核、Forel氏H区核、上丘和中脑三叉神经核中未发现标记神经元。这些结果表明，皮质和脑干向脊髓的投射与其他物种中描述的投射相当。
