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  • Title: [The pathogenesis of inflammatory dermatoses, especially psoriasis].
    Author: Bos WE, Thio HB, Neumann HA, van der Fits L, Prens EP.
    Journal: Ned Tijdschr Geneeskd; 2006 Jan 28; 150(4):179-83. PubMed ID: 16471231.
    Abstract:
    The skin contains a variety of cell types and mediators, which together constitute the skin's immune system and play a key role in protecting the human body against dangers from outside. Dysregulation of the skin's immune system, however, frequently occurs and can result in undesirable inflammatory processes in the skin. A typical example of an undesirable inflammation in the skin is the chronic inflammatory skin disease psoriasis. In the pathogenesis of psoriasis, both genetic and environmental factors play a key role. In psoriasis, the complex interactions between T-lymphocytes, antigen-presenting cells, keratinocytes and pro-inflammatory cytokines and chemokines are disturbed. The two most widely accepted hypotheses are: (a) psoriasis is a T-cell mediated autoimmune disease, and (b) psoriasis is the result of a too finely adjusted system for regulating inflammation in the skin. The result of both mechanisms is a chronic inflammatory reaction fuelled by pro-inflammatory type-I cytokines that lead to the psoriasis-skin phenotype. With the development ofbiologicals, it has become feasible to target specific molecules in the immune process, for example type-I cytokines and the molecules present on pathogenic T-cells. This approach has already proved successful in the treatment of rheumatoid arthritis and Crohn's disease, creating novel therapeutic options for psoriasis and other inflammatory dermatoses.
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