Rivero-Melián C, Arvidsson J
Department of Anatomy, Karolinska Institute, Stockholm, Sweden.
Exp Brain Res. 1992;91(1):12-20. doi: 10.1007/BF00230009.
Brain stem projections from each of the L1-L6 lumbar dorsal root ganglia (DRGs) were investigated in adult rats following DRG injections of choleragenoid-horseradish peroxidase. All these DRGs projected throughout the rostrocaudal extent of the gracile nucleus (Gr). Labeling from L1-L6 DRGs was transported to successively more dorsomedial areas of Gr. Investigation of the Gr projections from the DRGs revealed a somatotopic organization which was most prominent in the middle part of Gr. The cuneate nucleus showed smaller projections from all investigated DRGs. Minor projections to the internal basilar nucleus, external cuneate nucleus, medial vestibular nucleus, ventral cochlear nucleus and trigeminal sensory nuclei were also found from some of the DRGs.
在成年大鼠中，向腰1 - 6背根神经节（DRG）注射霍乱毒素 - 辣根过氧化物酶后，研究了来自每个腰1 - 6背根神经节的脑干投射。所有这些背根神经节都投射到薄束核（Gr）的整个 rostrocaudal 范围。来自腰1 - 6背根神经节的标记物被转运到薄束核越来越靠背内侧的区域。对背根神经节向薄束核的投射研究揭示了一种躯体定位组织，在薄束核中部最为明显。楔束核显示来自所有研究的背根神经节的投射较小。从一些背根神经节还发现了向基底内侧核、外侧楔束核、内侧前庭核、腹侧耳蜗核和三叉神经感觉核的少量投射。
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