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Conocarpus erectus L., a plant with a high content of structural sugars, ions and phenolic compounds, shows antioxidant and antimicrobial properties promoted by different organic fractions

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Asian Pacific Journal of Tropical Biomedicine 2018年第9期8卷 463-470页

作者： Dayane Kelly dias do nascimento Santos Weslley Henrique de Oliveira Melo Anastassia Mariáh Nunes de Oliveira Lima Iranildo Joseda Cruz Filho Glaucia Manoella de Souza Lima Tulio Diego da Silva maiara Celine de Moura Marcia Silva do nascimento Ana Maria Souto Maior Thiago Henrique napoleao Cristiane Moutinho Lagos de Melo department of Biochemistry Biosciences Centre Federal University of Pernambuco department of Antibiotics Biosciences Centre Federal University of Pernambuco Center of Strategic Technologies of the Northeast

Objective: To evaluate the structural and chemical composition of plant and the antioxidant and antimicrobial activities promoted by hexanic, ethanolic and ethyl acetate fractions obtained from leaves of Conocarpus ***: Organic fractions were characterized through UPLC-MS and *** potential was performed through DPPH and molybdenum phosphate *** and antifungal assays were performed in accordance with Clinical and Laboratory Standards Institute ***: The obtained biomass of Conocarpus erectus leaves showed the high presence of glucose(0.45 g/L), cellulose(28.69%), na(55.126 μg/L) and K(31.163 μg/L).We identified seven compounds in the hexanic and ethyl acetate fractions, and eight compounds in ethanolic ***, phenolic compounds are prevalent in all organic fractions with values of(10.04 ± 0.24),(221.26 ± 1.84),(340.53 ± 0.84) mg/g GAE to hexanic, ethyl acetate and ethanolic fraction, *** results showed a high potential in ethyl acetate fraction(71.82 ± 6.87)% and(10.89 ± 0.05)% in DPPH and molybdenum phosphate techniques, *** ethanolic fraction showed moderate bacteriostatic and bactericidal activity against Staphylococcus aureus and presented a high fungistatic potential for all Candida species ***: Organic fractions obtained from leaves of Conocarpus erectus present antimicrobial and antioxidant properties, and these findings contribute to scientific information for the effectiveness on use of this plant in the development of a phytotherapic compound.

关键词： Combretaceae Phenolic compounds Antimicrobial activity Antioxidant

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Relationship between Th17 immune response and cancer

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World Journal of Clinical Oncology 2021年第10期12卷 845-867页

作者： Hanna Santos Marques Breno Bittencourt de Brito Filipe Antônio França da Silva Maria Luísa Cordeiro Santos Júlio César Braga de Souza Thiago Macêdo Lopes Correia Luana Weber Lopes nayara Silva de Macêdo Neres Rafael Santos Dantas Miranda Dórea Anna Carolina Saúde Dantas Lorena Lôbo Brito Morbeck Iasmin Souza Lima Amanda Alves de Almeida maiara raul.na de jesus dias Fabrício Freire de Melo Campus Vitória da Conquista Universidade Estadual do Sudoeste da BahiaVitória da Conquista 45083-900BahiaBrazil Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

Cancer is the second leading cause of death worldwide and epidemiological projections predict growing cancer mortality rates in the next *** has a close relationship with the immune system and,although Th17 cells are known to play roles in the immune response against microorganisms and in autoimmunity,studies have emphasized their roles in cancer *** Th17 immune response profile is involved in several types of cancer including urogenital,respiratory,gastrointestinal,and skin *** type of immune response exerts pro and antitumor functions through several mechanisms,depending on the context of each tumor,including the protumor angiogenesis and exhaustion of T cells and the antitumor recruitment of T cells and neutrophils to the tumor *** other factors,the paradoxical behavior of Th17 cells in this setting has been attributed to its plasticity potential,which makes possible their conversion into other types of T cells such as Th17/Treg and Th17/Th1 ***(IL)-17 stands out among Th17-related cytokines since it modulates pathways and interacts with other cell profiles in the tumor microenvironment,which allow Th17 cells to prevail in ***,the IL-17 is able to mediate pro and antitumor processes that influence the development and progression of various cancers,being associated with variable clinical *** understanding of the relationship between the Th17 immune response and cancer as well as the singularities of carcinogenic processes in each type of tumor is crucial for the identification of new therapeutic targets.

关键词： Cancer Immune response Th17 cells Interleukin-17 Tumor microenvironment Pathophysiology

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