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Study of cytotoxic, genotoxic and antioxidant activities of Styrax camporum hydroalcoholic extract and chemical markers, egonol and homoegonol, and their influence on genetic material damage and pre-neoplastic lesions.

Grant number: 11/21310-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2012
Effective date (End): February 28, 2015
Field of knowledge:Biological Sciences - Genetics - Mutagenesis
Principal researcher:Denise Crispim Tavares Barbosa
Grantee:Pollyanna Francielli de Oliveira
Home Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil


The Styracaceae family is popularly known due to the production of balsamic resins with bacteriostatic and fungicidal properties called for "benjoin," in which the benzoic acid is the main constituent. This resin is widely used in traditional medicine for the treatment of respiratory disorders. The genus Styrax is the most important representative of Styracaceae family because it has about 130 species and a wealth of information. This genus differs from other genera of the family by producing a resinous material secreted from injuries caused by the stem. Different classes of special metabolites as lignans, neolignans, benzofuran norlignans and triterpenes constituents were found as prevalent in the genus. The Styrax camporum Poh is popularly known as "benjoeiro", "estoraque-do-campo" and "cuia-do-brejo". An adult plant can reach a height from 60 to 10 meters and trunk diameter from 30 to 40 inches. In Brazil, it occurs in the Cerrado of Minas Gerais, São Paulo, Mato Grosso do Sul and in semi-deciduous forest of the Paraná Basin. The ethnopharmacology reports the use of S. camporum to treat stomach problems. Phytochemical studies have shown egonol and homoegonol benzofurans lignans as chemical markers of the genus Styrax. Some important biological activities have been described in the literature for these compounds, such as antiproliferative, antibacterial, antifungal and immunomodulatory activities. Since the biological activities displayed by the extract and the egonol and homoegonol compounds its may have important clinical applications, it is important to evaluate its effect on genetic material, as well as its influence on genomic and chromosomal lesions induced by different mutagens. In this sense, the aim of the study will be evaluate the possible cytotoxicity, genotoxicity and carcinogenicity activities of the S. camporum hydroalcoholic stems extract and its chemical markers, egonol and homoegonol, as well to evaluate its modulating effect of DNA damage induced by mutagens with different mechanisms of action. Additionally, this study aims to carry out a series of measurements of products of oxidative stress in order to better understand the effect of the extract and its chemical markers in the body. For these evaluations, systems-test in vivo and in vitro will be used.

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MIURA, BARBARA A.; FERREIRA, NATALIA H.; OLIVEIRA, POLLYANNA F.; DE FARIA, EMERSON H.; TAVARES, DENISE C.; ROCHA, LUCAS A.; CIUFFI, KATIA J.; NASSAR, EDUARDO J.. Functionalization of luminescent YVO4:Eu3+ nanoparticles by sol-gel. Journal of Luminescence, v. 159, p. 93-99, . (11/21310-2, 12/11673-3, 11/15757-4, 11/09823-4, 12/24427-0)
DE OLIVEIRA, POLLYANNA FRANCIELLI; FURTADO, RICARDO ANDRADE; ACESIO, NATHALIA OLIVEIRA; LEANDRO, LUIS FERNANDO; MONTANHEIRO, GIOVANNA; DE PADUA, FRANCISNELA CORREA; CORREA, MARIANA BELTRAME; BRAGUINI, CAIO GUEDES; PAULETTI, PATRICIA MENDONCA; TAVARES, DENISE CRISPIM. In Vivo Protective Activity of Styrax camporum Hydroalcoholic Extract against Genotoxicity Induced by Doxorubicin and Methyl Methanesulfonate in the Micronucleus and Comet Assays. Planta Medica, v. 78, n. 18, p. 1899-1905, . (11/21310-2, 08/10283-1)
FRANCIELLI DE OLIVEIRA, POLLYANNA; LEANDRO, LUIS FERNANDO; FURTADO, RICARDO ANDRADE; FERREIRA, NATALIA HELEN; PAULETTI, PATRICIA MENDONCA; BARBOSA ARAUJO, ALBA REGINA; UYEMURA, SERGIO AKIRA; TAVARES, DENISE CRISPIM. Styrax camporum, a typical species of the Brazilian cerrado, attenuates DNA damage, preneoplastic lesions and oxidative stress in experimental rat colon carcinogenesis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES, v. 84, n. 14, p. 582-592, . (11/21310-2, 13/13903-9)
DE OLIVEIRA, POLLYANNA FRANCIELLI; MUNARI, CARLA CAROLINA; NICOLELLA, HELOIZA DINIZ; SOLA VENEZIANI, RODRIGO CASSIO; TAVARES, DENISE CRISPIM. Manool, a Salvia officinalis diterpene, induces selective cytotoxicity in cancer cells. Cytotechnology, v. 68, n. 5, p. 2139-2143, . (11/21310-2)

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