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Leaf Essential Oil from Three Exotic Mytaceae Species Growing in the Botanical Garden of Rio de j.neiro, Brazil

American j.urnal of Plant Sciences 2016年第6期7卷 834-840页

作者： Antonio C. Siani marcos j. nakamura Gabrielle P. das Neves Sérgio da S. Monteiro Mônica Freiman S. Ramos Departamento de Química de Produtos Naturais Instituto de Tecnologia em Fármacos Fundacao Oswaldo Cruz Rio de Janeiro Brazil Fórum Itaboraí de Política Ciência e Cultura na Saúde Fundacao Oswaldo Cruz Palácio Itaboraí Petrópolis Brazil Departamento de Medicamentos Faculdade de Farmácia Faculdade de Farmácia Universidade Federal do Rio de Janeiro CCS Bloco K Cidade Universitária Rio de Janeiro Brazil

The leaf essential oils of three Myrtaceae species: Melaleuca leucadendra, Lophostemon confertus and Ugni molinae, non-native to Brazil and growing in the Rio de j.neiro Botanical Garden, were obtained by hydrodistillation and analyzed by GC and GC-MS. Oil yields from fresh leaves were 0.76%, 0.08%, and 0.04%, respectively. Sixty-seven percent of M. leucadendra oil was made up of monoterpenes, wherein 1,8-cineole was largely predominant (49%), followed by α-terpineol (7.6%) and terpinen-4-ol (4.3%). The sesquiterpene profile was characterized by a significant amount of viridiflorol (29%). Oil from L. confertus was 42% monoterpenes;the most predominant constituents being α-pinene (20.8%) and α-thuj.ne (7.1%). Total sesquiterpenes (55.4%) comprised spathulenol (28%), globulol (14%), and aromadendrene derivatives (8.5%) as the main species. U. Molinae oil was exclusively composed of sesquiterpenes, with a predominance of β-elemene (44%) followed by β-caryophyllene (7.1%), and bicyclogermacrene (6.7%);guaiol-type alcohols made up 30% of its profile. To the best of our knowledge, this is the first time U. Molinae leaf oil composition has been described. The composition of M. leucadendra oil corresponded to a chemotype described for a species growing in Cuba, but was different from that produced by M. leucadendra growing in Egypt, Tunisia, and elsewhere in Brazil. The profile of the L. confertus leaf oil showed high similarity with those described for Australian native specimens, in particular in relation to the relevant presence of α-pinene, aromadendrenes, and the guaiol-type alcohols.

关键词： Melaleuca leucadendra Lophostemon confertus Ugni molinae Myrtaceae Essential oil

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Viscum Album Modulates Apoptotic Related Genes in Melanoma Tumor of Mice

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American j.urnal of Molecular Biology 2014年第2期4卷 49-58页

作者： Anamaria da Silva Facina Gil Facina Ismael Dale Cotrim Guerreiro da Silva Giovana Aparecida Goncalves Fernando Augusto de Almeida Silvana Aparecida Alves Correa de Noronha Samuel marcos Ribeiro de Noronha Mary Uchiyama nakamura Departament of Dermatology Federal University of Sao PauloSao PauloBrazil Department of Gynecology Federal University of Sao PauloSao PauloBrazil Department of Surgery Federal University of Sao PauloSao PauloBrazil Departament of Obstetrics Federal University of Sao PauloSao PauloBrazil

Cancer is a maj.r public health problem throughout the world. It is estimated that one third of the American population will develop the disease at some time during their lifetimes. Among these, melanoma will account for 7% of the cases. In Brazil, in 2012, it is estimated that over six thousand new melanoma cases occurred. During recent years, the incidence of melanoma has increased, mainly due to a more constant exposure of the skin to sunlight. In this work, our aim is to assess the expression of apoptotis-related genes melanoma tumors in mice treated with Viscum album (VA). This will allow us to better understand the molecular mechanisms underlying tumor cell death activation caused by this compound. Our results clearly demonstrate upregulation of pro apoptotic genes (Trp53bp2, Nol3, Fadd, Tnfsf10, Traf1, Traf2, Cflar, Card10, Nod1, Casp 2, Casp7, Xiap, Dad1, and Dffb). Further bioinformatics-based tool analysis allowed us to assess which specific cell death-related intracellular pathways were activated by VA treatment. Two maj.r effects of VA in melanoma cells could be observed: generation of an immunomudulatory Th-1 like action, recruiting several interleukines, and cell death activation through Caspase7, associated uspstream with Card10 and downstream with CAD. In summary, VA modulates apoptosis related genes in cancer melanoma cells. Although a deeper study should be conducted, VA seems to interfere with important signaling pathways within melanoma cells that control the cellular mechanisms of apoptosis activation. Therapeutic approaches using VA as an antineoplastic and adj.vant medication compounding should be considered.

关键词： Viscum Album Melanoma Apoptosis Pathways PCR Array Immunohistochemistry

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