PT  - JOURNAL ARTICLE
AU  - Salim S. Al-Rejaie
AU  - Hatem M. Abuohashish
AU  - Mohammed M. Ahmed
AU  - Aws S. Arrejaie
AU  - Abdulaziz M. Aleisa
AU  - Shakir D. AlSharari
TI  - Telmisartan inhibits hyperalgesia and inflammatory progression in a diabetic neuropathic pain model of Wistar rats
AID  - 10.17712/nsj.2015.2.20140511
DP  - 2015 Apr 01
TA  - Neurosciences Journal
PG  - 115--123
VI  - 20
IP  - 2
4099  - http://nsj.org.sa/content/20/2/115.short
4100  - http://nsj.org.sa/content/20/2/115.full
SO  - Neurosciences (Riyadh)2015 Apr 01; 20
AB  - Objective: To evaluate the potential therapeutic value of telmisartan (TMT) against diabetic neuropathy (DN) and associated pain in Wistar rats.Methods: Peripheral DN was induced by a single intraperitoneal streptozotocin injection (55 mg/kg), and 3 weeks later TMT treatment was started (5 and 10 mg/kg/day), and continued for 4 weeks. Mechanical nociceptive threshold, motor coordination, and thermal nociceptive threshold tests were performed before and after TMT treatment. In serum, glucose, pro-inflammatory cytokines including tumor necrosis factor-α, interleukin-1β, and interleukin-6 were assessed. Nerve growth factor (NGF) levels and histopathological changes were estimated in the sciatic nerve. This study was conducted at the Experimental Animal Care Center, Department of Pharmacology, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia between January 2013 and May 2014.Results: We observed a significant reduction in mechanical nociceptive threshold, motor coordination, and thermal nociceptive threshold in diabetic animals. The TMT treatment significantly enhanced the reduced mechanical nociceptive threshold. The untreated diabetic animals revealed a significant decrease in sciatic NGF, which was markedly attenuated by TMT. The elevated serum levels of cytokines in diabetic animals were inhibited by the TMT treatments. Histopathological evaluation showed obvious nerve degeneration in the diabetic group that was eliminated in the TMT treated diabetic groups.Conclusion: Telmisartan has a potential neuro-protective effect on peripheral DN; this is mediated through its anti-inflammatory effects and its dual properties as an angiotensin receptor blocker, and a partial peroxisome proliferator activator receptor-g ligand.