Avaliação in vitro do potencial antimicrobiano e da atividade antiproliferativa da Guapira Graciliflora Mart. (joão-mole)

Abstract

The plants have been a rich source for therapeutic agents, serving as basis for the drug's synthesis, making an important source of new medicines for diseases that are yet without cure like infections and malignancies, in this context the Brazilian flora, due it's diversity, plays an important role in the discovery of potential antimicrobial drugs and antitumor. This work proposes to evaluate the antimicrobial potential of the hydroalcoholic extract of the Guapira Graciliflora Mart. (EOHG) thought the method of the microdilution in broth against strains of the Streptococcus mutans, Streptococcus salivarius, Streptococcus oralis, Streptococcus parasanguinis, Streptococcus mitis and Candida albicans, it's antiproliferative capacity in cell lines of squamous cell carcinome SCC 9, SCC 25 e HSC 3 by the essay MTT, additional to it's inducer potential of apoptosis observed by the test of annexin staining V/PI. The EOHG has presented antimicrobial activity over tested microorganisms, and the better results was observed in the bacteria S. mutans (12,50 µl/ µl), S. mitis (12,50 µl/ µl) and S. salivarius (6,25 µl/ µl), and in the clinical strains of Candida albicans (11) and Candida albicans (410), with CIMs of 0,5mg/ml and 2mg/ml, respectively. The EOHG, in the concentration of 200 µg/ml, have presented inhibition rates of 49% for the cells SCC9 and 63% for the cells HSC3 in the interval of 48h. The Rate of cellular apoptosis for HSC 3 was 19,29% on the time of 48h, additionally the tests of the annexin V/PI has revealed the induction of the cellular apoptosis, suggesting that the cellular membrane and nuclear have been damaged. Based in the results that have been presented, the Guapira Graciliflora Mart. is elected as a potential source of bioactive compound to be used in the treatment of oral infections and the CCEO.