Avaliação das atividades citotóxicas e imunomoduladora de paládio(II) contendo o ligante DMBA= N,N-dimetilbenzilamina.
Year: 2014
Type: dissertation
Abstract: The cancer manifestation caused by uncontrolled growth of cells, affects millions of individuals and is a major cause of death worldwide. Considering that the drugs currently available for the treatment of limited efficacy (such as cisplatin) commonly linked to high toxicity, the search for new compounds capable of fighting cancer cells is urgently needed. With this growing interest in investigating new substances that are not toxic, but selective. Compounds of palladium(II) have been studied as an alternative to available drugs showing be promising for its low toxicity and ability to stimulate antitumor immune response. Macrophages are the first cells to be activated to participate in an immune response itself and cells are able to secrete more than hundred biologically active products, among these, reactive nitrogen species and active cytokines in the immune response and tissue formation. In this work seven compounds of palladium(II) were tested for potential antitumor and immune being: [Pd(dmba) (μ-Cl)]2 (1), [Pd(dma)(μ-N3)]2•H2O (2), [Pd (dmba)(μ-NCO)]2 (3), [Pd(dmba)Cl(isn)] (4), [Pd(dmba)(N3)(isn)] (5), [Pd(dmba)(NCO)(isn)] (6) {DMBA = N, Ndimethylbenzylamine; ISN = -isonicotinamide; Cl = chloro; N3 = azide; and NCO = cyanate}; and [Pd(C-dmba)(NCS)(dppp)] (7) = {DMBA = N,N‟ – dimethylbenzylamine; NCS= thiocyanate and DPPP = difenilfosfinapropano}. The compounds were tested by colorimetric assay of MTT, 3 [4,5-dimethylthiazol-2-yl] -2,5-diphenyl-tetrazolium. Compounds that showed better results (3.4 and 7, compared with cisplatin) were subjected to the MTT assay in order to trace their cytostatic and cytotoxic profile against LM3 cell line (murine mammary carcinoma), and analysis of apoptosis Flow Cytometry results involving cytotoxicity on these two cell types showed that each compound acts differently. Featured, against LM3 lineage compound 3 showed efficacy at a concentration of 25 mg / mL, as compound 4 showed the best ...
Source: Americanae (AECID Library)
Language: Portuguese
Subfield: Oncology
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W577883244