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المؤلفAhmed, Ashraf Ibrahim
المؤلفAl-Nuaimi, Salma
المؤلفMustafa, Ayman
المؤلفZeidan, Asad
المؤلفAgouni, Abdelali
المؤلفDjouhri, Laiche
تاريخ الإتاحة2024-08-27T06:09:35Z
تاريخ النشر2024-01-01
اسم المنشورJournal of Pain Research
المعرّفhttp://dx.doi.org/10.2147/JPR.S467535
الاقتباسAhmed AI, Al-Nuaimi S, Mustafa A, Zeidan A, Agouni A, Djouhri L. Kv7 Channel Activators Flupirtine and ML213 Alleviate Neuropathic Pain Behavior in the Streptozotocin Rat Model of Diabetic Neuropathy. J Pain Res. 2024;17:2267-2278 https://doi.org/10.2147/JPR.S467535
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85197730839&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/58055
الملخصBackground & Objective: Chronic peripheral neuropathic pain (PNP) is a debilitating condition that is associated with many types of injury/diseases, including diabetes mellitus. Patients with longstanding diabetes develop diabetic PNP (DPNP), which is resilient to currently available drugs. The underlying molecular mechanisms of DPNP are still illusive, but Kv 7 channels that have been implicated in the pathogenesis of various types of chronic pain are likely to be involved. Indeed, using the streptozotocin (STZ) rat model of DPNP, we have previously shown that Kv 7 activation with their non-selective activator retigabine attenuated neuropathic pain behavior suggesting that these channels are implicated in DPNP pathogenesis. Here, we evaluated, in the same STZ model, whether the more potent and more selective Kv 7 channel openers flupirtine and ML213 attenuate STZ-induced pain hypersensitivity. Methods: Male Sprague Dawley rats (250– 300 g) were used. The STZ model involved a single injection of STZ (60 mg/kg, i.p.). Behavioral testing for mechanical and heat pain sensitivity was performed using a dynamic plantar aesthesiometer and Hargreaves analgesiometer, respectively. Results: STZ rats exhibited behavioral signs of mechanical and heat hypersensitivity as indicated by significant decreases in the mean paw withdrawal threshold (PWT) and mean paw withdrawal latency (PWL), respectively, at 35 days post-STZ treatment. Single injections of flupirtine (10 mg/kg, i.p.) and ML213 (5 mg/kg, i.p.) to STZ rats (35-days after STZ treatment) caused significant increases in the mean PWT, but not PWL, indicating attenuation of mechanical, but not heat hypersensitivity. Both flupirtine and ML213 were as effective as the positive control gabapentin (10/kg, i.p.), and their anti-allodynic effects were prevented by the Kv 7 channel-specific blocker XE991 (3 mg/kg, i.p.). Conclusion: The findings suggest that Kv 7 channels are involved in the mechanisms of mechanical but not heat hypersensitivity associated with DPNP, and that their activation may prove to be effective in alleviating DPNP symptoms.
راعي المشروعThe work is supported by a grant from Qatar Foundation (NPRP13s-0213–200352) to LD.
اللغةen
الناشرDove Press Ltd
الموضوعchronic pain
diabetic neuropathy
ion channels
K 7 channels v
rat model of pain
العنوانKv7 Channel Activators Flupirtine and ML213 Alleviate Neuropathic Pain Behavior in the Streptozotocin Rat Model of Diabetic Neuropathy
النوعArticle
رقم المجلد17
ESSN1178-7090
dc.accessType Open Access


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