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The International Journal of Lower Extremity Wounds
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Effect of Centella asiatica L (Umbelliferae) on Normal and Dexamethasone-Suppressed Wound Healing in Wistar Albino Rats

B. Somashekar Shetty, Msc, PhD

Department of Biochemistry, Melaka Manipal Medical College, Manipal, India, somashekarshetty{at}yahoo.com

S. L. Udupa, Msc, PhD

Department of Biochemistry, KMC International Centre, Manipal, India

A. L. Udupa, MD, PhD

Department of Pharmacology, Kasturba Medical College, Manipal, India

S. N. Somayaji, Msc, PhD

Department of Anatomy, Melaka Manipal Medical College, Manipal, India

Centella asiatica is a reputed medicinal plant used in the treatment of various skin diseases in the Indian system of medicine. The objective of the study presented in this article was to evaluate the wound-healing potential of the ethanolic extract of the plant in both normal and dexamethasone-suppressed wound healing. The study was done on Wistar albino rats using incision, excision, and dead space wounds models. The extract of C asiatica significantly increased the wound breaking strength in incision wound model compared to controls (P < .001). The extract-treated wounds were found to epithelize faster, and the rate of wound contraction was significantly increased as compared to control wounds (P < .001). Wet and dry granulation tissue weights, granulation tissue breaking strength, and hydroxyproline content in a dead space wound model also increased at statistically significant levels as shown. The extract of the leaves had the effect of attenuating the known effects of dexamethasone healing in all wound models (P < .001, P < .05). The results indicated that the leaf extract promotes wound healing significantly and is able to overcome the wound-healing suppressing action of dexamethasone in a rat model. These observations were supported by histology findings.

Key Words: Centella asiatica • wound healing • incision wound • excision wound • dead space wound • dexamethasone

The International Journal of Lower Extremity Wounds, Vol. 5, No. 3, 137-143 (2006)
DOI: 10.1177/1534734606291313
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