Abstract:
:TRP channels have been discovered as a specialized group of somatosensory neurons involved in the detection of noxious stimuli. Desensitization of TRPV1 located on dorsal root and trigeminal ganglia exhibits analgesic effect and makes it potential therapeutic target for treatment of neuropathic pain. With this background, the present study was aimed to investigate the protective effect of niflumic acid, a TRPV1 modulator, on stavudine (STV)-induced neuropathic pain in rats. Stavudine (50 mg/kg) was administered intravenously via tail vein in rats to induce neuropathic pain. Various behavioral tests were performed to access neuropathic pain (hyperalgesia and allodynia) on 7th, 14th, 21st, and 28th days. Electrophysiology (motor nerve conduction velocity; MNCV) and biochemical estimations were conducted after 28th day. Niflumic acid (10, 15, and 20 mg/kg) was administered intraperitoneally and evaluated against behavioral, electrophysiological (MNCV), and biochemical alterations in stavudine-treated rats. Pregabalin (30 mg/kg) was taken as reference standard and administered intraperitoneally. Four weeks after stavudine injection, rats developed behavioral, electrophysiological (MNCV), and biochemical (oxidative, nitrosative stress, and inflammatory cytokines, TRPV1) alterations. Niflumic acid restored core and associated symptoms of peripheral neuropathy by suppressing oxidative-nitrosative stress, inflammatory cytokines (TNF-α, IL-1β) and TRPV1 level in stavudine-induced neuropathic pain in rats. Pharmacological efficacy of niflumic acid (20 mg/kg) was equivalent to pregabalin (30 mg/kg). In conclusion, niflumic acid attenuates STV-induced behavioral, electrophysiological and biochemical alterations by manipulating TRP channel activity in two manners: (1) direct antagonistic action against TRPV1 channels and (2) indirect inhibition of TRP channels by blocking oxidative and inflammatory surge. Therefore, NA can be developed as a potential pharmacotherapeutic adjunct for antiretroviral drug-induced neuropathy.
journal_name
Inflammopharmacologyjournal_title
Inflammopharmacologyauthors
Marwaha L,Bansal Y,Singh R,Saroj P,Sodhi RK,Kuhad Adoi
10.1007/s10787-016-0285-0subject
Has Abstractpub_date
2016-12-01 00:00:00pages
319-334issue
6eissn
0925-4692issn
1568-5608pii
10.1007/s10787-016-0285-0journal_volume
24pub_type
杂志文章abstract::Allanblackia gabonensis (Guttiferae) is a plant used in the African traditional medicine as remedies against pain, rheumatism, inflammations. In the present work, the analgesic effect of aqueous extract has been evaluated using acetic acid, formalin, hot-plate test, tail immersion and paw-pressure test. The anti-infla...
journal_title:Inflammopharmacology
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更新日期:2003-01-01 00:00:00
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更新日期:2018-12-01 00:00:00
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pub_type: 杂志文章,已发布勘误
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更新日期:2019-02-01 00:00:00
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更新日期:2019-08-01 00:00:00