Pharmacological effects of a synthetic quinoline, a hybrid of tomoxiprole and naproxen, against acute pain and inflammation in mice: a behavioral and docking study

Document Type : Original Article


1 Pharmaceutical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

2 Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran

3 Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

4 Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran


Objective(s): In the present study, we investigated the potential anti-nociceptive activity and acute anti-inflammatory effect of a synthetic quinoline compound (2-(4-Methoxyphenyl)benzo[h]quinoline-4-carboxylic acid, QC), possessing structural elements of both naproxen and tomoxiprole drugs.
Materials and Methods: The anti-nociceptive activity of QC was evaluated using chemical- and thermal-induced nociception models and its acute anti-inflammatory effect was evaluated by xylene-induced ear edema test in mice.
Results: QC displayed a dose dependent effect in both acute anti-nociceptive tests (writhing and hot plate). This compound at dose of 6.562 mg/kg showed a high anti-nociceptive effect near equal to  diclofenac 5 mg/kg. It also showed high anti-inflammatory effects (less than 6.562 mg/kg) comparable to those of reference drugs diclofenac (5 mg/kg) and celecoxib (100 mg/kg). Docking study showed that this quinoline derivative could inhibit COX-2 enzyme strongly.
Conclusion: QC showed high anti-nociceptive and anti-inflammatory effects comparable to reference drugs and can exert its anti-nociceptive and anti-inflammatory activities through COX-2 inhibition.


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