Efeitos anti-inflamatório e antitumoral dos constituintes de Qualea grandiflora no tumor de Ehrlich

• Autor(a) principal: Quilles, Marcela Bassi [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/127548
• topic: Mamas - Cancer - Prevenção; Apoptose; Neovascularização; Vochysiaceae; Imunologia clínica; Plantas - Compostos bioativos; Apoptosis

Breast cancer is a leading cause of death among women, followed by cervix cancer. The treatments normally used are highly aggressive, and most often causing deleterious effects on host cells. Macrophages are the first cells to be activated to participate in an immune response itself, cells are able to secrete more than hundred biologically active products, among these, reactive nitrogen species and cytokines that act in the context of immune and / or inflammatory. Qualea grandiflora Mart (Q. grandiflora) family Vochysiaceae is a plant of the Brazilian Cerrado, used in folk medicine in the treatment of ulcers, gastritis, amebiasis, bloody diarrhea, intestinal cramps and inflammation. Previous studies in our laboratory have shown that species Qualea sp. showed in vitro antitumor activity extremely selective murine breast tumor (line LM3) and also has anti-inflammatory characteristics by the significant inhibition of the production of immune mediators NO, IL-1 and IL-12 by murine peritoneal macrophages activated with LPS. From these results, we propose to evaluate this work an alternative form of treatment for breast cancer by employing a crude extract (EH), a fraction terpene (FT) derived from the hexane extract of Q. grandiflora and substance isolated β-sitosterol (BS) in an experimental model of Ehrlich concomitant evaluation of the immunological effects of the tested substances in the animal. As standard drug of experiments, we used Taxol ® (Paclitaxel-TX). It has been determined in vitro cytotoxicity of peritoneal exudate cells of mice and Ehrlich tumor cells after incubation with the different treatments using the technique of MTT analysis of VEGF angiogenesis by measuring the ocorência apoptosis in tumor cells by techniques Tunel and annexin V as well as the inhibition of nitric oxide (NO) and TNF-α, IL-1, IL-12 and IL-6. In addition, it was determined the rate of in vivo tumor inhibition and histological analysis by light ...