| Autor: |
André Luiz Lourenço, Max Seidy Saito, Luís Eduardo Gomes Dorneles, Gil Mendes Viana, Plínio Cunha Sathler, Lúcia Cruz de Sequeira Aguiar, Marcelo de Pádula, Thaisa Francielle Souza Domingos, Aline Guerra Manssour Fraga, Carlos Rangel Rodrigues, Valeria Pereira de Sousa, Helena Carla Castro, Lucio Mendes Cabral |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Molecules, Vol 20, Iss 4, Pp 7174-7200 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1420-3049 |
| DOI: |
10.3390/molecules20047174 |
| Popis: |
The incidence of hematological disorders has increased steadily in Western countries despite the advances in drug development. The high expression of the multi-resistance protein 4 in patients with transitory aspirin resistance, points to the importance of finding new molecules, including those that are not affected by these proteins. In this work, we describe the synthesis and biological evaluation of a series of N,N'-disubstituted thioureas derivatives using in vitro and in silico approaches. New designed compounds inhibit the arachidonic acid pathway in human platelets. The most active thioureas (compounds 3d, 3i, 3m and 3p) displayed IC50 values ranging from 29 to 84 µM with direct influence over in vitro PGE2 and TXA2 formation. In silico evaluation of these compounds suggests that direct blockage of the tyrosyl-radical at the COX-1 active site is achieved by strong hydrophobic contacts as well as electrostatic interactions. A low toxicity profile of this series was observed through hemolytic, genotoxic and mutagenic assays. The most active thioureas were able to reduce both PGE2 and TXB2 production in human platelets, suggesting a direct inhibition of COX-1. These results reinforce their promising profile as lead antiplatelet agents for further in vivo experimental investigations. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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