Expression of kinin B1 receptors in the spinal cord of streptozotocin-diabetic rat

Brice Ongali, Maria Martha Campos, Mihai Petcu, Donata Rodi, Frank Cloutier, Jean-Guy Chabot, Gaétan Thibault, Réjean Couture
Neuroreport 2004 November 15, 15 (16): 2463-6
Previous studies have reported cardiovascular and nociceptive responses after intrathecal injection of kinin B1 receptor (B1R) agonists in the model of streptozotocin (STZ)-diabetic rat (diabetic). The aim of this study was to measure the early up-regulation of B1R binding sites and mRNA in the thoracic spinal cord of diabetic and control rats. Data show significant increases of specific B1R binding sites in the dorsal horn of diabetic rats 2 days (+315%), 7 days (+303%) and 21 days (+181%) after STZ treatment. Levels of mRNA were significantly increased (+68%) at 2 and 7 days but not at 21 days. These data bring the first molecular evidence for an early up-regulation of B1R in the spinal cord of diabetic rat.

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