Tumor necrosis factor-alpha and the cytokine network in psoriasis Fator de necrose tumoral-alfa e a rede de citocinas na psoriase

New molecular methods of research have greatly expanded the knowledge about the role of cytokines in several diseases, including psoriasis. The work orchestrated by these peptides is essential for the communication between resident inflammatory cells (keratinocytes and endothelial cells) and infiltr...

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Published in:Anais brasileiros de dermatología Vol. 87; no. 5; pp. 673 - 683
Main Authors: Arles Martins Brotas, José Marcos Tellas Cunha, Eduardo Henrique Jorge Lago, Cristiane Chaves Nascentes Machado, Sueli Coelho da Silva Carneiro
Format: Journal Article
Language:English
Published: Sociedade Brasileira de Dermatologia 01-10-2012
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Summary:New molecular methods of research have greatly expanded the knowledge about the role of cytokines in several diseases, including psoriasis. The work orchestrated by these peptides is essential for the communication between resident inflammatory cells (keratinocytes and endothelial cells) and infiltrating cells (neutrophils, lymphocytes, Langerhans cells). This is a complex network due to redundancy, synergism and, sometimes, the antagonism of cytokines, which prevents full understanding of the pathogenesis of the disease. Currently, it seems premature to try to establish a main actor, but TNFalpha participates in all stages of psoriatic plaque development, as we shall see.A introdução de novos métodos moleculares de investigação ampliou muito o conhecimento sobre o papel das citocinas em diversas doenças, entre elas a psoríase. O trabalho orquestrado desses polipeptídeos é fundamental na comunicação entre as células inflamatórias residentes (queratinócitos e células endoteliais) e infiltrantes (neutrófilos, linfócitos, células de Langerhans). Trata-se de uma rede complexa devido à redundância, ao sinergismo e, por vezes, ao antagonismo das citocinas, o que dificulta a compreensão da fisiopatogenia da doença a partir de um mecanismo linear. No momento atual, parece precoce tentar estabelecer um regente, mas o TNF-alfa se destaca em todos os passos do desenvolvimento da placa psoriásica, como veremos a seguir.
ISSN:0365-0596
1806-4841
DOI:10.1590/S0365-05962012000500001