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Year : 2012  |  Volume : 44  |  Issue : 6  |  Page : 694-698

Evaluation of the wound-healing activity of Hibiscus rosa sinensis L (Malvaceae) in Wistar albino rats

1 Department of Biotechnology, PRIST University, Vallam, Thanjavur, Tamil Nadu, India
2 Department of Biotechnology, Srimad Andavan College, Trichy, Tamil Nadu, India

Correspondence Address:
Anusha Bhaskar
Department of Biotechnology, PRIST University, Vallam, Thanjavur, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0253-7613.103252

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Objective: To investigate the wound-healing potency of the ethanolic extract of the flowers of Hibiscus rosa sinensis. Materials and Methods: The wound-healing activity of H. rosa sinensis (5 and 10% w/w) on Wistar albino rats was studied using three different models viz., excision, incision and dead space wound. The parameters studied were breaking strength in incision model, granulation tissue dry weight, breaking strength and collagen content in dead space wound model, percentage of wound contraction and period of epithelization in excision wound model. The granulation tissue formed on days 4, 8, 12, and 16 (post-wound) was used to estimate total collagen, hexosamine, protein, DNA and uronic acid. Data were analyzed by Analysis of Variance (ANOVA) test. P<0.05 was considered statistically significant. Results: The extract increased cellular proliferation and collagen synthesis at the wound site, as evidenced by increase in DNA, total protein and total collagen content of granulation tissues. The extract-treated wounds were found to heal much faster as indicated by improved rates of epithelialization and wound contraction. The extract of H. rosa sinensis significantly (P<0.001) increased the wound-breaking strength in the incision wound model compared to controls. The extract-treated wounds were found to epithelialize faster, and the rate of wound contraction was significantly (P<0.001) increased as compared to control wounds. Wet and dry granulation tissue weights in a dead space wound model increased significantly (P<0.001). There was a significant increase in wound closure rate, tensile strength, dry granuloma weight, wet granuloma weight and decrease in epithelization period in H. rosa sinensis-treated group as compared to control and standard drug-treated groups. Conclusion: The ethanolic extract of H. rosa sinensis had greater wound-healing activity than the nitrofurazone ointment.


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