Bulhões AAVDC, Estevão LRDM, Florencio-Silva R, Simoes RS, Leite AGB, Cunha DMSDS, Ramos CS, Soares ÉBDA, D’Emery MB, Câmara CAGD, Evêncio-Neto J. Effects of the healing activity of rosemary-of-Chapada (Lippia gracilis Schauer) on cutaneous lesions in rats.
Acta Cir Bras 2022;
37:e370104. [PMID:
35416859 PMCID:
PMC9000978 DOI:
10.1590/acb370104]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/25/2021] [Indexed: 11/22/2022] Open
Abstract
Purpose:
To evaluate the effects of rosemary leaf essential oil-based ointments on the
healing of rat skin lesions.
Methods:
Sixty adult male rats, with dorsal excisional skin wounds made surgically
under anesthesia, were divided into three groups (n = 20): Sham group
(untreated wounds); control group (CG, wounds treated with vehicle); and
essential oil (EO) treated group (wounds treated with essential oil-based
ointments), administered topically once daily. Skin wounds were evaluated at
4, 7, 14, and 21 days after EO or vehicle treatments. Lesions were analyzed
macroscopically for the contraction degree. Formalin-fixed paraffin-embedded
sections of skin wounds were used for histopathological evaluation.
Results:
Macroscopic evaluation showed wounds edges with thin crust without firmness
and yellowish color, along with an improvement in wound contraction in EO
group when compared to the other groups. A reduced inflammatory reaction,
along with newly formed small diameter capillaries and more organized and
elongated collagen fibers, were more frequently observed in EO group than in
the other groups. Moreover, blood vessel number and collagen fibers density
were significantly higher in EO group.
Conclusions:
Skin lesion treatment with rosemary leaf essential oil-based ointments
accelerates the initial stages of healing, reduces inflammation, and
increases angiogenesis, collagen fibers density, and wound contraction in
rats.
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