Related Experiment Video
Updated: Mar 19, 2026
Rapid Determination of the Thermal Nociceptive Threshold in Diabetic Rats
Published on: May 17, 2012
The effect of spinally administered WIN 55,212-2, a cannabinoid agonist, on thermal pain sensitivity in diabetic rats
Samane Jahanabadi1, Mohamad Reza Hadian2, Javad Shamsaee3
1Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Faculty of Pharmacy, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Objectives:
Diabetic neuropathy (DN) is a common complication of diabetes that leads to allodynia, impaired nerve conduction, and progressive sensory loss. The aim of this study was to observe the effect of a high-affinity cannabinoid receptors agonist, WIN 55,212-2, on thermal hyperalgesia, nerve conduction velocity and sciatic nerve histopathology in diabetic rats.
Materials And Methods:
Diabetes was induced in rats using a single dose of streptozotocin (45 mg/kg IP).
Results:
Intrathecal (IT) administration of WIN55, 212-2 (1, 10, 100 µg/10 µl, IT), produced antinociceptive effects in the hot plate test and also improved nerve conduction velocity (100 µg/10 µl, IT) and sciatic nerve histology.
Conclusion:
These data show that cannabinoids have potent antinociceptive effects through direct actions in the spinal dorsal horn of nociceptive pathway. This suggests that intrathecally administered cannabinoids may offer hopeful strategies for the treatment of diabetic neuropathic pain.
