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RESEARCH ARTICLE

Synovial Tissue Response to Treatment with TNF Blockers in Peripheral Spondyloarthritis

The Open Rheumatology Journal 30 December 2011 RESEARCH ARTICLE DOI: 10.2174/1874312901105010127

Abstract

This review describes the synovial response to treatment in peripheral spondyloarthritis (SpA). A series of recent studies demonstrates that the synovial histopathology is largely homogenous between different SpA subtypes and can be strongly modulated by effective treatment such as tumor necrosis factor (TNF) blockade. This includes a dramatic reduction of the infiltration with inflammatory cells (with the intriguing exception of B lymphocytes and plasma cells), a modulation of structural features such as vascularity, intimal lining layer hyperplasia, and ectopic lymphoid neogenesis, and a down-regulation of a variety of mediators involved in tissue damage. The analysis of tissue response to targeted therapies appears to be a novel and elegant approach to study the immunopathology of human peripheral SpA in vivo. Moreover, detailed cellular and molecular analysis of synovial features allows to identify synovial biomarkers of clinical response to therapeutic interventions which can be used in future early phase clinical trials in SpA.

Keywords: Spondyloarthritis, TNF blockade, Synovial tissue, Synovial biomarkers..
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