Normal Anatomy and Physiology of the Spinal Cord Dorsal Horn

1988 ◽  
Vol 51 (2-5) ◽  
pp. 78-88 ◽  
Author(s):  
Alan R. Light
Keyword(s):  
Spinal Cord ◽  
Dorsal Horn ◽  
Spinal Cord Dorsal Horn ◽  
Normal Anatomy ◽  
Anatomy And Physiology ◽  
Spinal Cord Dorsal

scholarly journals Delta Opioid Receptors Presynaptically Regulate Cutaneous Mechanosensory Neuron Input to the Spinal Cord Dorsal Horn

Neuron ◽  
2014 ◽  
Vol 81 (6) ◽  
pp. 1443 ◽  
Author(s):  
Rita Bardoni ◽  
Vivianne L. Tawfik ◽  
Dong Wang ◽  
Amaury François ◽  
Carlos Solorzano ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Dorsal Horn ◽  
Opioid Receptors ◽  
Spinal Cord Dorsal Horn ◽  
Mechanosensory Neuron ◽  
Delta Opioid Receptors ◽  
Spinal Cord Dorsal

scholarly journals Intrathecal Injection of the ς1Receptor Antagonist BD1047 Blocks Both Mechanical Allodynia and Increases in Spinal NR1 Expression during the Induction Phase of Rodent Neuropathic Pain

2008 ◽  
Vol 109 (5) ◽  
pp. 879-889 ◽  
Author(s):  
Dae-Hyun Roh ◽  
Hyun-Woo Kim ◽  
Seo-Yeon Yoon ◽  
Hyoung-Sig Seo ◽  
Young-Bae Kwon ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Neuropathic Pain ◽  
Dorsal Horn ◽  
Mechanical Allodynia ◽  
Maintenance Phase ◽  
Spinal Cord Dorsal Horn ◽  
Induction Phase ◽  
Receptor Subunit ◽  
Aspartate Receptor ◽  
Spinal Cord Dorsal

Background Selective blockade of spinal sigma(1) receptors (Sig-1R) suppresses nociceptive behaviors in the mouse formalin test. The current study was designed to verify whether intrathecal Sig-1R antagonists can also suppress chronic neuropathic pain. Methods Neuropathic pain was produced by chronic constriction injury (CCI) of the right sciatic nerve in rats. The Sig-1R antagonist BD1047 was administered intrathecally twice daily from postoperative days 0 to 5 (induction phase of neuropathic pain) or from days 15 to 20 (maintenance phase). Western blot and immunohistochemistry were performed to determine changes in Sig-1R expression and to examine the effect of BD1047 on N-methyl-D-aspartate receptor subunit 1 expression and phosphorylation in spinal cord dorsal horn from neuropathic rats. Results BD1047 administered on postoperative days 0-5 significantly attenuated CCI-induced mechanical allodynia, but not thermal hyperalgesia, and this suppression was blocked by intrathecal administration of the Sig-1R agonist PRE084. In contrast, BD1047 treatment during the maintenance phase of neuropathic pain had no effect on mechanical allodynia. Sig-1R expression significantly increased in the ipsilateral spinal cord dorsal horn from days 1 to 3 after CCI. Importantly, BD1047 (30 nmol) administered intrathecally during the induction, but not the maintenance phase, blocked the CCI-induced increase in N-methyl-D-aspartate receptor subunit 1 expression and phosphorylation. Conclusions These results demonstrate that spinal Sig-1Rs play a critical role in both the induction of mechanical allodynia and the activation of spinal N-methyl-d-aspartate receptors in CCI rats and suggest a potential therapeutic role for the use of Sig-1R antagonists in the clinical management of neuropathic pain.

ALTERED DISTRIBUTION OF NEUROTRANSMITTERS IN THE SPINAL CORD DORSAL HORN IN AN EXPERIMENTAL PAINFUL NEUROPATHY

1992 ◽  
Vol 77 (Supplement) ◽  
pp. A812
Author(s):  
C. Sommer ◽  
J. A. Galbraith ◽  
H. M. Heckman ◽  
R. R. Myers
Keyword(s):  
Spinal Cord ◽  
Dorsal Horn ◽  
Spinal Cord Dorsal Horn ◽  
Painful Neuropathy ◽  
Spinal Cord Dorsal

Microglial refinement of spinal cord sensory circuitry regulates normal maturation of dynamic touch.

2021 ◽  
Author(s):  
Yajing Xu ◽  
Stephanie Koch ◽  
Alexander Chamessian ◽  
Qianru He ◽  
Mayya Sundukova ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Dorsal Horn ◽  
Normal Development ◽  
Physiological Role ◽  
Spinal Cord Dorsal Horn ◽  
Dynamic Touch ◽  
Tactile Sensitivity ◽  
Primary Afferent ◽  
Spinal Cord Dorsal

In the spinal cord dorsal horn, sensory circuits undergo remarkable postnatal reorganisation, including refinement of primary afferent A-fibres in the superficial layers, accompanied by decreased cutaneous sensitivity. Here we show a physiological role of microglia necessary for normal development of dorsal horn sensory circuits and tactile sensitivity. In the absence of microglial engulfment, superfluous A-fibre projections persist, leading to lifelong hypersensitivity to dynamic touch.

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