Increased expression of low density granulocytes in juvenile-onset systemic lupus erythematosus patients correlates with disease activity

Midgley, A and Beresford, MW ORCID: 0000-0002-5400-9911 (2016) Increased expression of low density granulocytes in juvenile-onset systemic lupus erythematosus patients correlates with disease activity. LUPUS, 25 (4). pp. 407-411.

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Official URL: http://dx.doi.org/10.1177/0961203315608959

Abstract

Neutrophils are implicated in a wide range of non-infectious inflammatory conditions. A subset of neutrophils in the peripheral circulation of systemic lupus erythematosus (SLE) patients has been described and termed low density granulocytes (LDGs). This study investigates the expression of LDG in juvenile-onset SLE (JSLE) patients compared to controls, and any correlations with disease activity.Neutrophils and LDGs were isolated from JSLE (n = 13) and paediatric non-inflammatory control patients (n = 12). Cell populations were assessed and compared using flow cytometry and morphological analysis. Standard clinical data, which included disease activity markers/scores, were collected for each patient.Significantly increased LDG expression (%mean ± SEM, range) was observed in JSLE patients (10.4 ± 3.26, 3.41-36.3) compared to controls (2.4 ± 0.44, 0.36-5.27; p = 0.005). A statistically significant positive correlation was observed between LDG expression and the British Isles Lupus Activity Group (correlation coefficient 0.685; p = 0.010) and SLE Disease Activity Index (correlation coefficient 0.567; p = 0.043) and the biomarker of dsDNA-antibodies (correlation coefficient 0.590; p = 0.043).Here we observe increased expression in LDGs in JSLE patients, which correlate with dsDNA antibody concentration and scores of disease activity. These correlations indicate that the increased LDG expression observed in this study may have a potential role in the pathogenesis of JSLE, and may be a useful biomarker.

Item Type:	Article
Uncontrolled Keywords:	Neutrophil sub population, low density granulocytes, JSLE
Depositing User:	Symplectic Admin
Date Deposited:	21 Sep 2016 08:37
Last Modified:	19 Jan 2023 07:30
DOI:	10.1177/0961203315608959
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3003260