研究者業績

河西 稔

カワニシ ミノル  (Minoru Kawanishi)

基本情報

所属
藤田保健衛生大学 医学部 医学科 麻酔学 教授
学位
博士(医学)(名古屋大学)

J-GLOBAL ID
200901023483621467
researchmap会員ID
1000306291

学歴

 2

MISC

 30
  • Anesthesia 21 Century 5(1-15) 2003(821) 2003年  
  • 木村尚平, 河西稔, 高橋伸二, 川瀬守智, 波木京子
    日本ペインクリニック学会誌 10(2) 168-172 2003年  
  • Y Suzuki, J Sato, M Kawanishi, K Mizumura
    PAIN 99(3) 475-484 2002年10月  
    The maintenance of normoglycemia has been reported to reduce painful sensations in diabetic subjects. This suggests that lowering the tissue glucose concentration might inhibit the increased cutaneous nociceptor activities seen in a diabetic conditin. To test this hypothesis, we studied the effect of changing the glucose concentration in the superfusate of in vitro preparations (high, HG: 20 mM or normal glucose, NG: 6.7 mM) on the mechanical response of C-fiber polymodal receptors (C-polymodal receptors). Single fiber activities of C-polymodal receptors were recorded from skin-nerve in vitro preparations of streptozotocin-induced diabetic and age-matched control rats. Pressure stimulation was applied to the receptive field by a servo-controlled mechanical stimulator. C-polymodal receptors from diabetic preparations superfused with HG-solution showed increased spontaneous activity, lowered response threshold, increased response magnitude and a less adaptive response pattern to mechanical stimulation compared with those from control preparations superfused with NG-solution. C-polymodal receptors from diabetic preparations superfused with NG-solution showed no such changes. The responsiveness of C-polymodal receptors from control preparations was not different in NG- or HG-conditions. These data demonstrated that normalization of the glucose concentration normalized the responsiveness of C-polymodal receptors in diabetic animals. This response may be associated with the fact that normoglycemia reduces painful sensations in diabetic subjects. (C) 2002 International Association for the Study of Pain. Published by Elsevier Science B.V. All rights reserved.
  • Yoshiaki Suzuki, Jun Sato, Minoru Kawanishi, Kazue Mizumura
    Pain 99(3) 475-484 2002年10月  
    The maintenance of normoglycemia has been reported to reduce painful sensations in diabetic subjects. This suggests that lowering the tissue glucose concentration might inhibit the increased cutaneous nociceptor activities seen in a diabetic conditin. To test this hypothesis, we studied the effect of changing the glucose concentration in the superfusate of in vitro preparations (high, HG: 20 mM or normal glucose, NG: 6.7 mM) on the mechanical response of C-fiber polymodal receptors (C-polymodal receptors). Single fiber activities of C-polymodal receptors were recorded from skin-nerve in vitro preparations of streptozotocin-induced diabetic and age-matched control rats. Pressure stimulation was applied to the receptive field by a servo-controlled mechanical stimulator. C-polymodal receptors from diabetic preparations superfused with HG-solution showed increased spontaneous activity, lowered response threshold, increased response magnitude and a less adaptive response pattern to mechanical stimulation compared with those from control preparations superfused with NG-solution. C-polymodal receptors from diabetic preparations superfused with NG-solution showed no such changes. The responsiveness of C-polymodal receptors from control preparations was not different in NG- or HG-conditions. These data demonstrated that normalization of the glucose concentration normalized the responsiveness of C-polymodal receptors in diabetic animals. This response may be associated with the fact that normoglycemia reduces painful sensations in diabetic subjects. © 2002 International Association for the Study of Pain. Published by Elsevier Science B.V. All rights reserved.