Phytotherapeutic Approaches to Common Dermatologic Conditions

Brown, Donald J.; Dattner, Alan M.

doi:10.1001/archderm.134.11.1401

Cited by 83 publications

(55 citation statements)

References 18 publications

(14 reference statements)

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“…It seems that its use has been more disseminated from the XIII century on, and it was initially utilized for healing wounds. It was employed as unguent and ointment, as an antiseptic and an anti-inflammatory, during the North American Civil War and the World War [1][2][3][4][5] . Few experimental models have been carried out for the evaluation of the anti-inflammatory activity of the C. officinalis.…”

Section: Introductionmentioning

confidence: 99%

“…Few experimental models have been carried out for the evaluation of the anti-inflammatory activity of the C. officinalis. One of these models was conducted by means of the induction of ear edema by croton oil and another one by the use of carrageenan-induced paw edema [4][5][6] . Patrick et al 7 carried out a study with European C. officinalis flowers by the use of the chorioallantoic membrane (CAM) of chicken fertilized egg.…”

Section: Introductionmentioning

confidence: 99%

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Angiogenic activity of Calendula officinalis flowers L. in rats

Parente¹,

Andrade²,

Brito³

et al. 2011

Acta Cir. Bras.

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Purpose:In this work, angiogenic activity of Calendula officinalis L. (Asteraceae) ethanolic extract and dichloromethane and hexanic fractions were evaluated, considering medicinal properties, especially healing activity, are attributed to this plant. Methods: Models using 36 rats and 90 embryonated eggs were used to evaluate healing and angiogenic activities of extracts and fractions of the plant, through the induction of skin wounds and the chorioallantoic membrane, respectively. The effect of vascular proliferation was also tested from the study to verify the intensity of expression of vascular endothelial growth factor (VEGF) in cutaneous wounds in rats. Results: The angiogenic activity of the extract and the fractions was evidenced in both experimental models. It was verified that this effect is not directly related to the expression of VEGF and it could be associated to other pro-angiogenic factors. Conclusion: The healing activity referred to C. officinalis is related, among other factors, to its positive effect on angiogenesis, characterized by the induction of neovascularization. Key words: Calendula. Wound Healing. Neovascularization, Physiologic. Plants, Medicinal. Rats. RESUMOObjetivo: Neste trabalho a atividade sobre a angiogênese do extrato etanólico (EEC) e das frações diclorometano e hexânica das flores de Calendula officinalis L. (Asteraceae) cultivada no Brasil foram avaliados, visto que propriedades medicinais têm sido atribuídas às flores da planta, destacando-se a atividade cicatrizante. Métodos: Modelos utilizando 36 ratos e 90 ovos embrionados foram usados para avaliar as atividades cicatrizante e angiogênica dos extratos e frações da planta, por meio da indução de feridas cutâneas e da membrana corioalantóide, respectivamente. O efeito proliferativo vascular foi também testado a partir do estudo imunoistoquímico, realizado para verificar a intensidade da expressão do fator de crescimento endotelial vascular (VEGF) na derme de ratos. Resultados: A atividade angiogênica do extrato e das frações foi evidenciada nos dois modelos experimentais empregados. Foi evidenciado que este efeito não estava diretamente relacionado à expressão do VEGF, podendo estar associado a outros fatores pró-angiogênicos. Conclusão: A atividade cicatrizante referida a C. officinalis está relacionada ao seu efeito positivo sobre a angiogênese, e este foi caracterizado pela indução de neovascularização. Descritores: Calendula. Cicatrização de Feridas. Neovascularização Fisiológica. Plantas Medicinais. Ratos.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Angiogenic activity of Calendula officinalis flowers L. in rats

Parente¹,

Andrade²,

Brito³

et al. 2011

Acta Cir. Bras.

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“…This layer isolates the wound site from the environment, reducing the permeability and exudation of the wound (Brown, Dattner, 1998;Bedi, Shenefelt, 2002) and promoting tissue repair. Tannins also exhibit vasoconstrictor and anti-inflammatory properties (Mota et al, 1985;Kapu et al, 2001) and stimulate the growth of epidermis, aiding reepithelialization (Palermo et al, 2002;.…”

Section: Introductionmentioning

confidence: 99%

Wound-healing evaluation of ointment from Stryphnodendron adstringens (barbatimão) in rat skin

Hernandes

Pereira

Palazzo

et al. 2010

Braz. J. Pharm. Sci.

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This study evaluated the cicatrizant effect of an ointment containing 1% of the ethyl-acetate fraction extracted from the stem bark of "barbatimão" (Stryphnodendron adstringens), in wounds made in the skin of rats, after 4, 7 and 10 days of treatment. Control wounds were treated with a base ointment without extract. The proliferation of keratinocytes in the area of reepithelialization was evaluated by counting the number of epithelial cells that were blocked in metaphase by vincristine sulfate. The length of the reepithelialized margin and the contraction of the wound were measured. Topical application of the "barbatimão" ointment stimulated proliferation of the keratinocytes, but had no effect on the length of the epithelium or on the contraction of the wounds. Uniterms:Stryphnodendron adstringens/pharmacognosy. Stryphnodendron adstringens/ cicatrizant effect. "Barbatimão"/pharmacognosy. Wound/healing/experimental study. Reepithelialization.Neste estudo, avaliou-se a atividade cicatrizante de uma pomada contendo uma fração acetato de etila 1% obtida de cascas de "barbatimão" (Stryphnodendron adstringens) em feridas excisionais na pele de ratos após 4, 7 e 10 dias de tratamento. Feridas controle foram tratadas com pomada base, sem extrato. A proliferação dos queratinócitos na área reepitelizada foi avaliada através da contagem do número de queratinócitos bloqueados em metáfase, pelo sulfato de vincristina. O comprimento da margem reepitelizada e a contração das feridas foram mensurados. As feridas tratadas com barbatimão apresentaram um maior número de mitoses do que aquelas tratadas com a pomada base, em todos os tempos avaliados. A aplicação tópica da pomada de "barbatimão" estimulou a proliferação epitelial contudo não teve efeito sobre a migração dos queratinócitos ou sobre a contração das feridas. Unitermos:Stryphnodendron adstringens/farmacognosia. Stryphnodendron adstringens/efeito cicatrizante. "Barbatimão"/farmacognosia. Feridas/cicatrização/estudo experimental. Reepitelização. INTRODUCTIONIn cutaneous lesions, tannins bind to the proteins of the injured tissues, precipitating them (Fernandez et al., 2002) and creating a protective layer (Neto et al., 1996). This layer isolates the wound site from the environment, reducing the permeability and exudation of the wound (Brown, Dattner, 1998;Bedi, Shenefelt, 2002) and promoting tissue repair. Tannins also exhibit vasoconstrictor and anti-inflammatory properties (Mota et al., 1985;Kapu et al., 2001) and stimulate the growth of epidermis, aiding reepithelialization (Palermo et al., 2002;. Reepithelialization involves the proliferation and migration of cells from the edges of the wound, and is regulated by mechanisms involving genes, growth factors, integrins, extracellular matrices (ECM) and metalloproteinases (MMPs) (Santoro, Gaudino, 2005).Stryphnodendron Martius, Leguminosae, popularly known as "barbatimão", is a Brazilian savannah tree. Extracts of the stem bark from species of Stryphnodendron have several medically useful properties, such as antiinflamma...

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“…Tree bark extracts, including that of Quercus rubras, have been used traditionally by the native elders of Vancouver Island to treat illnesses ranging from digestive tract ailments to dermatologic complaints [12]. Oak bark contains tannin and has a significant astringent property that is thought to coagulate surface proteins of cells, which causes a reduction in permeability and secretions [13]. The reduced skin irritation observed with salicyclic acid relative to conventional topical acne treatments has been attributed to its anti-infl ammatory effects.…”

Section: Introductionmentioning

confidence: 99%