Barrier lymphocytes in spondyloarthritis. Issue 4 (July 2020)

• Record Type: Journal Article
• Authors: Berlinberg, Adam; Kuhn, Kristine A.
• Is Part Of: Current opinion in rheumatology. Volume 32:Issue 4(2020:Jul.)
• Publication Date: 2020-07
• Subjects: barrier immunity -- intestine -- lymphocytes -- skin -- spondyloarthritis; Rheumatology -- Periodicals; Arthritis -- Periodicals; Review Literature -- Periodicals; Rheumatic Diseases -- Periodicals; 616.723
• DOI: 10.1097/BOR.0000000000000716
• Languages: English
• ISSNs: 1040-8711

Abstract

Abstract : Purpose of review: The clinical overlap between spondyloarthritis (SpA) and inflammation of barrier tissues such as the intestine and skin indicates a role of barrier tissue immunity in the development of SpA. Herein, we review the recent advances in understanding lymphocyte populations and functions within the intestine and skin implicated in the pathophysiology of SpA. Recent findings: A number of unique lymphocyte populations have been identified to be expanded within the gut and skin of patients with SpA, including γδ T cells, mucosa-associated invariant T (MAIT) cells, innate lymphoid cells (ILCs) and T resident memory (TRM ) cells. These cells respond to microbial cues at their barrier surface causing cellular activation and generation of interleukin (IL)-17, which is hypothesized to be the mechanism by which they contribute to SpA pathogenesis. Summary: Understanding how unique lymphocyte populations expand and produce IL-17 in the development of SpA provides insights into the pathophysiology of this disease as well as potential future therapeutic avenues.