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Published in: Pediatric Nephrology 12/2023

04-07-2023 | Albuminuria | Original Article

Plasma leucine-rich α-2-glycoprotein 1 – a novel marker of diabetic kidney disease in children and adolescents with type 1 diabetes mellitus?

Authors: Selda Ayça Altıncık, Didem Yıldırımçakar, Esin Avcı, Bayram Özhan, İlknur Girişgen, Selçuk Yüksel

Published in: Pediatric Nephrology | Issue 12/2023

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Abstract

Background

Glomerular endothelial dysfunction and neoangiogenesis play a significant role in the pathogenesis of diabetic kidney disease (DKD). Leucine-rich α-2 glycoprotein 1 (LRG1) is a recently discovered protein that participates in the molecular pathway of inflammation and angiogenesis. We aimed to investigate efficacy of LRG1 to predict estimated glomerular filtration rate (eGFR) decrease in children and adolescents with type 1 diabetes mellitus (T1DM).

Methods

The study comprised 72 participants with diabetes duration for ≥ 2 years. At study initiation, LRG1, urine albumin, eGFR (cystatin C-based, and Schwartz), HbA1c, and lipid values were evaluated and diabetes-related clinical features and anthropometric measurements were collected. These results were compared with final control values after ≥ 1 year. Patients were divided into subgroups according to presence of albuminuria progression, eGFR decrease, and metabolic control parameters.

Results

There was positive correlation between LRG1 level and Schwartz and cystatin C-based eGFR decline (r = 0.360, p = 0.003; r = 0.447, p = 0.001, respectively), and negative correlation between final cystatin C-based eGFR and LRG1 (p = 0.01, r = –0.345). Patients with cystatin C-based eGFR decrease > 10% had significantly higher LRG1 levels (p = 0.03), however, LRG1 was not different between albuminuria progression subgroups. A 0.282 μg/ml increase in LRG1 correlated with a 1% decrease in eGFR in simple linear regression analysis (β = 0.282, %CI 0.11–0.45, p = 0.001) and LRG1 was an independent predictor of GFR decline even in the presence of covariates.

Conclusions

Our study supports the relationship between plasma LRG1 and eGFR decline and suggests LRG1 may be an early marker of DKD progression in children with T1DM.

Graphical abstract

Appendix
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Literature
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go back to reference Pek SLT, Tavintharan S, Wang X (2015) Elevation of a novel angiogenic factor, leucine-rich- 2-glycoprotein (LRG1), is associated with arterial stiffness, endothelial dysfunction, and peripheral arterial disease in patients with type 2 diabetes. J Clin Endocrinol Metab 100:1586–1593. https://doi.org/10.1210/jc.2014-3855CrossRefPubMed Pek SLT, Tavintharan S, Wang X (2015) Elevation of a novel angiogenic factor, leucine-rich- 2-glycoprotein (LRG1), is associated with arterial stiffness, endothelial dysfunction, and peripheral arterial disease in patients with type 2 diabetes. J Clin Endocrinol Metab 100:1586–1593. https://​doi.​org/​10.​1210/​jc.​2014-3855CrossRefPubMed
20.
Metadata
Title
Plasma leucine-rich α-2-glycoprotein 1 – a novel marker of diabetic kidney disease in children and adolescents with type 1 diabetes mellitus?
Authors
Selda Ayça Altıncık
Didem Yıldırımçakar
Esin Avcı
Bayram Özhan
İlknur Girişgen
Selçuk Yüksel
Publication date
04-07-2023
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Nephrology / Issue 12/2023
Print ISSN: 0931-041X
Electronic ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-023-06019-4

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