Gillette R G, Kramis R C, Roberts W J
R.S. Dow Neurological Sciences Institute, Good Samaritan Hospital and Medical Center, Portland, OR 97209-1595.
Neurosci Lett. 1993 Jul 9;157(1):67-71. doi: 10.1016/0304-3940(93)90644-z.
The spinal projections of small-caliber (presumably nociceptive) afferents arising from lumbar spinal joints and muscles were examined using anterograde transport of WGA-HRP. Injections of WGA-HRP into these structures gave rise to similar, rostro-caudally extensive patterns of spinal labeling indicating that many afferents innervating one facet joint or paraspinal muscle terminate bilaterally in laminae I-II, V-VIII, and X of the lumbar, sacral, and thoracic spinal cord. These diffuse patterns of terminal arborization are reminiscent of visceral input and contrast with the more restricted unilateral terminal fields reported for afferents innervating more distal hindlimb tissues.
使用WGA-HRP顺行运输法，研究了源自腰椎关节和肌肉的小口径（推测为伤害性）传入神经的脊髓投射。向这些结构注射WGA-HRP后，在脊髓上产生了相似的、沿头尾方向广泛分布的标记模式，表明许多支配一个小关节或椎旁肌的传入神经在腰、骶和胸段脊髓的I-II、V-VIII和X层双侧终止。这些终末分支的弥散模式使人联想到内脏传入，与报道的支配更远端后肢组织的传入神经更局限的单侧终末野形成对比。
