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2016 ; 184
(1
): 11-8
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Insulin-like growth factor binding protein-2 as a novel biomarker for disease
activity and renal pathology changes in lupus nephritis
#MMPMID26616478
Ding H
; Kharboutli M
; Saxena R
; Wu T
Clin Exp Immunol
2016[Apr]; 184
(1
): 11-8
PMID26616478
show ga
Lupus nephritis (LN) is one of the most serious manifestations of systemic lupus
erythematosus. Invasive renal biopsy remains the gold standard for the diagnosis
and management of LN. The objective of this study is to validate serum
insulin-like growth factor binding protein-2 (IGFBP-2) as a novel biomarker for
clinical disease and renal pathology in LN. Eighty-five biopsy-proven lupus
nephritis patients, 18 chronic kidney disease (CKD) patients and 20 healthy
controls were recruited for enzyme-linked immunosorbent assay (ELISA) testing of
serum IGFBP-2 levels. Compared to CKD patients of origins other than lupus or
healthy controls, serum IGFBP-2 levels were elevated significantly in LN
patients. Serum IGFBP-2 was able to discriminate LN patients from the other two
groups of patients [area under the curve (AUC)?=?0·65, 95% confidence interval
(CI)?=?0·52-0·78; P = 0·043 for LN versus CKD; 0·97, 95% CI?=?0·93-1·00; P <
0·0001 for LN versus healthy controls]. Serum IGFBP-2 was a potential indicator
of both global disease activity and renal disease activity in LN patients,
correlated with serum creatinine levels (r?=?0·658, P?0·001, n?=?85) and urine
protein-to-creatinine levels (r?=?0·397, P?0·001, n?=?85). More importantly, in
19 concurrent patient samples, serum IGFBP-2 correlated with the chronicity index
of renal pathology (r?=?0·576, P?=?0·01, n?=?19) but not renal pathological
classification. In conclusion, serum IGFBP-2 is a promising biomarker for lupus
nephritis, reflective of disease activity and chronicity changes in renal
pathology.
|Adult
[MESH]
|Aged
[MESH]
|Area Under Curve
[MESH]
|Biomarkers/blood
[MESH]
|Creatinine/blood
[MESH]
|Cross-Sectional Studies
[MESH]
|Diagnosis, Differential
[MESH]
|Enzyme-Linked Immunosorbent Assay
[MESH]
|Female
[MESH]
|Humans
[MESH]
|Insulin-Like Growth Factor Binding Protein 2/*blood
[MESH]