The evidence based wound healing activity of Lawsonia inermis Linn

B Shivananda Nayak, Godwin Isitor, E M Davis, G K Pillai
Phytotherapy Research: PTR 2007, 21 (9): 827-31
The ethanol extract of Lawsonia inermis (200 mg/kg/day) was used to evaluate the wound healing activity on rats using excision, incision and dead space wound models. The animals were divided into three groups of six each in the excision model and two groups of six each in the incision model and dead space models. The topical application was made in the case of excision wound model, whereas, oral treatment was done with incision and dead space wound models. The following differences were noted in the group of experimental animals which were treated with an extract of L. inermis when compared with the control and reference standard animals: a high rate of wound contraction (p < 0.001), a decrease in the period of epithelialization (p < 0.001), high skin breaking strength (p < 0.001), a significant increase in the granulation tissue weight (p < 0.001) and hydroxyproline content (p < 0.05). The extract-treated animals showed 71% reduction in the wound area when compared with controls which was 58%. Histological studies of the tissue obtained on day 10 from the extract-treated group showed increased well organized bands of collagen, more fibroblasts and few inflammatory cells when compared with the controls which showed inflammatory cells, scanty collagen fibres and fibroblasts. Enhanced wound contraction, increased skin breaking strength, hydroxyproline and histological findings suggest the use of L. inermis in the management of wound healing.

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