Synergistic interaction between meloxicam and aminoguanidine in formalin-induced nociception in mice
| Autor: | Dinesh Kumar, V. Ravi Prakash, Rathinam Arunadevi, Shailesh P. Dudhgaonkar, Surendra K. Tandan |
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| Rok vydání: | 2008 |
| Předmět: |
Male
Gastrointestinal toxicity Drug Evaluation Preclinical Thiazines Nitric Oxide Synthase Type II Pain Pharmacology Meloxicam Guanidines Mice Late phase Formaldehyde medicine Animals Pain Measurement Cyclooxygenase 2 Inhibitors biology Chemistry Anti-Inflammatory Agents Non-Steroidal Nociceptors Drug Synergism Nitric oxide synthase Thiazoles Anesthesiology and Pain Medicine Nociception Anesthesia biology.protein Drug Therapy Combination Analysis of variance Licking medicine.drug |
| Zdroj: | European Journal of Pain. 12:321-328 |
| ISSN: | 1090-3801 |
| DOI: | 10.1016/j.ejpain.2007.06.006 |
| Popis: | Objectives The objective of this study was to examine the nature of interaction between cyclooxygenase-2 inhibitor meloxicam and inducible nitric oxide synthase inhibitor aminoguanidine in formalin-induced nociception in mice and the possible therapeutic advantage. Methods Antinociceptive effect of meloxicam (1, 3, 10 and 30 mg/kg, oral) and aminoguanidine (10, 30, 100 and 300 mg/kg, oral) and their combinations was examined in formalin-induced paw licking model in mice. Analysis of variance and isobolographic method were employed to identify the nature of antinociceptive interaction. Results Higher doses of meloxicam (10 and 30 mg/kg) and aminoguanidine (100 and 300 mg/kg) produced significant reduction in paw licking time (antinociceptive) in late phase of formalin-induced nociception. Combination of sub-threshold dose of meloxicam (3 mg/kg) with increasing doses of aminoguanidine (10, 30, 100 and 300 mg/kg) resulted in synergistic antinociceptive effect. Similarly, co-administration of sub-threshold dose of aminoguanidine (30 mg/kg) with increasing doses of meloxicam (1, 3, 10 and 30 mg/kg) produced significant reduction in formalin-induced paw licking behaviour. The experimental ED 50 for combination with their confidence limits are below the confidence interval of theoretical line of additive interaction, suggesting synergistic nature of interaction between meloxicam and aminoguanidine in isobolographic analysis. Conclusion Co-administration of meloxicam and aminoguanidine showed synergistic antinociceptive effect which might possibly reduce gastrointestinal toxicity associated with the use of meloxicam. |
| Databáze: | OpenAIRE |
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