کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8293392 | 1536744 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Leucine rich α-2 glycoprotein is a potential urinary biomarker for renal tubular injury
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
Our research group identified leucine rich α-2 glycoprotein (LRG) as a novel serum biomarker for various inflammatory diseases such as rheumatoid arthritis and inflammatory bowel disease. In inflammatory diseases, LRG expression is up-regulated at the site of inflammation, in accordance with the induction of LRG in many cell types by various inflammatory cytokines. Recently, urinary LRG was reported as a possible biomarker for several renal diseases, but the mechanism of LRG excretion in urine is still unclear. In this study, by analyzing a mouse albumin (ALB) overload model that is commonly used to study proteinuria-induced renal tubular injury, we provided evidence that urinary LRG is produced in renal tubular epithelial cells by interleukin-1β (IL-1β) that is released during proteinuria-induced renal damage. In this model, urinary LRG became detectable after ALB overload. In kidney, mRNA expression of LRG together with that of NACHT LRR and PYD domains-containing protein 3 (NLRP3) and IL-1β was significantly up-regulated in ALB-overloaded mice, compared to PBS-treated mice. By pathological analysis of kidney, LRG was detected in the injured proximal tubules, distal tubules and collecting ducts in ALB-overloaded mice. Accordingly, in vitro stimulation of mouse renal cortical tubular epithelial cells with excessive ALB led to LRG mRNA up-regulation and its protein secretion, which was effectively blocked by IL-1 receptor antagonist. These results suggest that urinary LRG could be applied to a biomarker detecting renal tubular injury in various renal diseases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 498, Issue 4, 15 April 2018, Pages 1045-1051
Journal: Biochemical and Biophysical Research Communications - Volume 498, Issue 4, 15 April 2018, Pages 1045-1051
نویسندگان
Hyun Lee, Minoru Fujimoto, Tomoharu Ohkawara, Hiromi Honda, Satoshi Serada, Yoshio Terada, Tetsuji Naka,