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HLA-G expression in the skin of patients with systemic sclerosis. | LitMetric

AI Article Synopsis

Article Abstract

Objective: To determine HLA-G expression in skin biopsies from patients with systemic sclerosis (SSc), and its association with epidemiological, clinical, and laboratory variables and survival.

Methods: Paraffin-embedded skin biopsies obtained from 21 SSc patients (14 limited SSc, 7 diffuse SSc) and from 28 healthy controls were studied. HLA-G expression was evaluated by immunohistochemistry.

Results: HLA-G molecules were detected in 57% of skin biopsies from patients with SSc (9 from limited SSc, 3 from diffuse SSc), whereas no control sample expressed HLA-G (p=0.000004). In patients, HLA-G molecules were consistently observed within epidermal and some dermal cells. HLA-G expression was associated with a lower frequency of vascular cutaneous ulcers (p=0.0004), telangiectasias (p=0.008), and inflammatory polyarthralgia (p=0.02). After a 15-year followup, SSc patients who exhibited HLA-G survived longer than patients who did not.

Conclusion: HLA-G is expressed in skin biopsies from patients with SSc, and this is associated with a better disease prognosis. This suggests a modulatory role of HLA-G in SSc, as observed in other skin disorders.

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http://dx.doi.org/10.3899/jrheum.080552DOI Listing

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