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Telmisartan for neuropathic pain

Marco Sisignano, Carlo Angioni, Chul-Kyu Park, Sascha Meyer Dos Santos, Holger Jordan, Maria Kuzikov, Di Liu, Sebastian Zinn, Stephan W Hohman, Yannick Schreiber, Béla Zimmer, Mike Schmidt, Ruirui Lu, Jing Suo, Dong-Dong Zhang, Stephan M G Schäfer, Martine Hofmann, Ajay S Yekkirala, Natasja de Bruin, Michael J Parnham, Clifford J Woolf, Ru-Rong Ji, Klaus Scholich, Gerd Geisslinger
Chemotherapy-induced peripheral neuropathic pain (CIPNP) is a severe dose- and therapy-limiting side effect of widely used cytostatics that is particularly difficult to treat. Here, we report increased expression of the cytochrome-P450 -epoxygenase CYP2J6 and increased concentrations of its linoleic acid metabolite 9,10-EpOME (9,10-epoxy-12Z-octadecenoic acid) in dorsal root ganglia (DRGs) of paclitaxel-treated mice as a model of CIPNP. The lipid sensitizes TRPV1 ion channels in primary sensory neurons and causes increased frequency of spontaneous excitatory postsynaptic currents in spinal cord nociceptive neurons, increased CGRP release from sciatic nerves and DRGs, and a reduction in mechanical and thermal pain hypersensitivity...
November 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
Salim S Al-Rejaie, Hatem M Abuohashish, Mohammed M Ahmed, Aws S Arrejaie, Abdulaziz M Aleisa, Shakir D AlSharari
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...
April 2015: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
Amteshwar Singh Jaggi, Nirmal Singh
The present study was designed to investigate the potential of telmisartan, an angiotensin AT(1) receptor, in chronic constriction injury-induced neuropathic pain in rats. Four loose ligatures were placed around the sciatic nerve to induce chronic constriction injury and neuropathic pain. Acetone drop, pin-prick, hot plate and paint brush tests were performed to assess cold allodynia; mechanical and heat hyperalgesia; and dynamic mechanical allodynia, respectively along with assessment of spontaneous pain and postural index in terms of foot deformity...
September 30, 2011: European Journal of Pharmacology
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