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In Silico, In Vitro, and In Vivo Antinociceptive Potential of S-Naproxen Derivatives
Ubaidullah1, Naveed Muhammad2, Abad Khan1
1Department of Pharmacy, University of Swabi, Swabi, Khyber Pakhtunkhwa, Pakistan.
Chemistryopen
|March 27, 2026
Summary
New naproxen derivatives show significant analgesic effects, acting as cyclooxygenase (COX) inhibitors. These compounds were validated through in vitro, in vivo, and in silico methods, demonstrating potential for pain relief.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Computational Chemistry
Background:
- Naproxen is a widely used nonsteroidal anti-inflammatory drug (NSAID).
- Exploring novel naproxen derivatives can lead to improved analgesic agents.
- Understanding the mechanism of action, including COX inhibition, is crucial for drug development.
Purpose of the Study:
- To investigate the antinociceptive (pain-relieving) effects of selected naproxen derivatives.
- To evaluate their cyclooxygenase (COX) inhibitory activity.
- To explore their mechanism of action using in vitro, in vivo, and in silico approaches.
Main Methods:
- In vitro cyclooxygenase (COX-I/COX-II) inhibition assays.
- In vivo antinociceptive assays including acetic acid and hot plate tests.
- In silico molecular simulation studies to assess binding interactions.
Main Results:
- Several naproxen derivatives exhibited potent COX-1 and COX-2 antagonistic effects.
- All tested derivatives showed significant analgesic effects in vivo at various concentrations.
- Molecular simulations indicated favorable binding interactions with COX enzymes for most derivatives.
Conclusions:
- The investigated naproxen derivatives possess significant analgesic properties.
- Their mechanism involves COX inhibition and potentially central pathways.
- These findings suggest potential for developing novel pain-relieving medications.
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