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 RESEARCH ARTICLE
Year : 2008  |  Volume : 40  |  Issue : 4  |  Page : 170-174

The effects of topical (gel) astemizole and terfenadine on wound healing


Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal, Karnataka, India

Correspondence Address:
C Mallikarjuna Rao
Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7613.43164

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Objective: To develop topical gel preparations of astemizole and terfenadine and to investigate the actions of the gels on the healing of incision and excision wounds in male albino rats. Materials and Methods: Gels containing 1% astemizole, with varying concentrations of carbopol 934 (polymer), were prepared. Similarly, 1% terfenadine gels were made. The formulations were evaluated for release rate and stability. Incision and excision wounds were inflicted on male albino rats under ketamine anesthesia, taking aseptic precautions. The animals were divided into two groups. They were given a topical application of either astemizole or terfenadine gel, at a dose of 100 mg per wound, once daily, for 10 days in the case of incision wounds and till the time of complete closure in the case of excision wounds. On the 11 th day, breaking strength of the incision wound was measured. In the excision wound model, wound closure rate, epithelization time, scar features and hydroxyproline content of scar tissue were studied from the day of wounding till the day of the scab falling off, with no residual raw area. Results: Gels prepared using 0.8% carbopol 934 and 1% of drug in gel base were found to be stable. The gels of astemizole and terfenadine significantly (P < 0.05) promoted the phases of healing such as collagenation (in incision wounds), wound contraction and epithelization (in excision wounds). Conclusion: The gels of astemizole and terfenadine might play an important role in wound management program.






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