Regional distribution of substance P, neurokinin α and neurokinin β in rat spinal cord, nerve roots and dorsal root ganglia, and the effects of dorsal root section or spinal transection

1985 ◽  
Vol 359 (1-2) ◽  
pp. 152-157 ◽  
Author(s):  
Tatsuji Ogawa ◽  
Ichiro Kanazawa ◽  
Sadao Kimura
Neuroscience ◽  
1983 ◽  
Vol 10 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Y. Charnay ◽  
C. Paulin ◽  
J.-A. Chayvialle ◽  
P.M. Dubois

1994 ◽  
Vol 168 (1-2) ◽  
pp. 97-100 ◽  
Author(s):  
Keiko Maekawa ◽  
Masabumi Minami ◽  
Kazuki Yabuuchi ◽  
Takashi Toya ◽  
Yoshikazu Katao ◽  
...  

2012 ◽  
Vol 117 (4) ◽  
pp. 847-856 ◽  
Author(s):  
Masami Suzuki ◽  
Minoru Narita ◽  
Minami Hasegawa ◽  
Sadayoshi Furuta ◽  
Tomoyuki Kawamata ◽  
...  

Background Patients with peritoneal carcinomatosis often report abdominal pain, which is relatively refractory to morphine. It has been considered that a new animal model is required to investigate the mechanism of abdominal pain for the development of optimal treatments for this type of pain. Methods To prepare a peritoneal carcinomatosis model, highly peritoneal-seeding gastric cancer cells, 60As6, were implanted into the abdominal cavity. The nociceptive modality for pain-related behavior was assessed in terms of withdrawal behavior in response to mechanical stimuli and hunching behavior. Tissue samples from mouse dorsal root ganglia and spinal cord were subject to immunohistochemistry and real-time reverse transcription polymerase chain reaction. Results Mice with peritoneal dissemination showed significant hypersensitivity of the abdomen to mechanical stimulation and spontaneous visceral pain-related behavior. There was a significant increase in c-Fos-positive cells in the spinal cord in tumor-bearing mice. Those mice exhibited a remarkable increase in substance P-positive neurons in the dorsal root ganglia (control vs. tumor, 15.4 ± 1.1 vs. 24.2 ± 3.6, P < 0.05, n = 3). A significant decreases in μ-opioid receptor expression mainly in substance P-positive neurons was observed in tumor-bearing mice (69.3 ± 4.9 vs. 38.7 ± 0.9, P < 0.05, n = 3), and a relatively higher dose of morphine was required to significantly reverse the abdominal hypersensitivity. Conclusion Both the up-regulation of substance P and down-regulation of μ-opioid receptor seen in the dorsal root ganglia may be, at least in part, responsible for the abdominal pain-like state associated with peritoneal carcinomatosis.


1995 ◽  
Vol 78 ◽  
pp. 74
Author(s):  
Jørgan D. Schiønning ◽  
Marianne Korsgaard ◽  
Gorm Danscher ◽  
Bjarne Møller-Madsen

1991 ◽  
Vol 123 (1) ◽  
pp. 123-126 ◽  
Author(s):  
S.N. Schiffmann ◽  
E. Teugels ◽  
P. Halleux ◽  
R. Menu ◽  
J.-J. Vanderhaeghen

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