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Research ArticleOriginal Article
Open Access

Interaction of allopurinol and non-steroidal anti-inflammatory drugs on the carrageenan-induced rat paw edema

Abdurhman S. Al-Arfaj, Ali A. Mustafa, Suliman R. Alballa, Ali S. Tuwaijri and Abdullah N. Al-Dalaan
Saudi Medical Journal September 2003, 24 (9) 936-940;
Abdurhman S. Al-Arfaj
PO Box 34471, Riyadh 11468, Kingdom of Saudi Arabia. Tel. +966 (1) 4672573. Fax. +966 (1) 4672511. E-mail: [email protected]
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  • For correspondence: [email protected]
Ali A. Mustafa
Department of Pharmacology, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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Suliman R. Alballa
Department of Medicine, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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Ali S. Tuwaijri
Department of Medicine, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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Abdullah N. Al-Dalaan
Department of Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia.
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Abstract

OBJECTIVE: To find out the effect of combining allopurinol with non-steroidal anti-inflammatory drugs on carrageenan-induced rat paw edema.

METHODS: The study was carried out at the College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia, over the period 1999 to 2000. Male wistar rats were randomly divided into 12-16 rats in each group. Edema was induced by subplantar injection of 0.1 ml of carrageenan (10 mg/ml) and the resulting edema volume was measured by plethysmograph, 3 hours after the injections. Saline of 0.9% (0.1 ml/100 g) was administered to the first group serving as control. The second and third groups received variable concentration of allopurinol (12.5, 25, 50 mg/kg) and tenoxicam (0.0625, 0.125, 0.25 mg/kg) 30 minutes before carrageenan injection. The fourth group received a combination of tenoxicam and allopurinol. Similar procedures were carried out with respect to diclofenac at 1.25, 2.5, 5.0 mg/kg and indomethacin at 0.25, 0.5, 1.0 mg/kg. The activities of the drugs were expressed as percentage inhibition of edema.

RESULTS: Pre-treatment of the rats with the 4 drugs individually resulted in dose-dependent reduction of volume of paw edema. The combination of allopurinol and diclofenac acted synergistically to reduce edema. A similar synergistic action was obtained when allopurinol was combined with indomethacin. By contrast, tenoxicam-allopurinol combination resulted in antagonistic action and produced an effect on edema, which was less than their individual inhibitory action.

CONCLUSION: Combining allopurinol with either diclofenac or indomethacin produced synergistic inhibitory action on rat's paw edema. However, tenoxicam, when combined with allopurinol, produced antagonism.

  • Copyright: © Saudi Medical Journal

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Saudi Medical Journal: 24 (9)
Saudi Medical Journal
Vol. 24, Issue 9
1 Sep 2003
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Interaction of allopurinol and non-steroidal anti-inflammatory drugs on the carrageenan-induced rat paw edema
Abdurhman S. Al-Arfaj, Ali A. Mustafa, Suliman R. Alballa, Ali S. Tuwaijri, Abdullah N. Al-Dalaan
Saudi Medical Journal Sep 2003, 24 (9) 936-940;

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Interaction of allopurinol and non-steroidal anti-inflammatory drugs on the carrageenan-induced rat paw edema
Abdurhman S. Al-Arfaj, Ali A. Mustafa, Suliman R. Alballa, Ali S. Tuwaijri, Abdullah N. Al-Dalaan
Saudi Medical Journal Sep 2003, 24 (9) 936-940;
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© 2025 Saudi Medical Journal Saudi Medical Journal is copyright under the Berne Convention and the International Copyright Convention.  Saudi Medical Journal is an Open Access journal and articles published are distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC). Readers may copy, distribute, and display the work for non-commercial purposes with the proper citation of the original work. Electronic ISSN 1658-3175. Print ISSN 0379-5284.

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