Urinary vitamin D binding protein: a potential novel marker of renal interstitial inflammation and fibrosis.
Urinary vitamin D binding protein: a potential novel marker of renal interstitial inflammation and fibrosis.
复制标题
尿维生素D结合蛋白:一种潜在的肾脏间隙炎症和纤维化的新颖标志物。
DOI:
10.1371/journal.pone.0055887
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
de Borst MH
中科院分区:
文献类型:
--
作者:
Mirković K;Doorenbos CR;Dam WA;Lambers Heerspink HJ;Slagman MC;Nauta FL;Kramer AB;Gansevoort RT;van den Born J;Navis G;de Borst MH
Non-invasive tubulointerstitial damage markers may allow better titration and monitoring of renoprotective therapy. We investigated the value of urinary vitamin D binding protein excretion (uVDBP) as a tubulointerstitial inflammation and fibrosis marker in adriamycin rats, and tested whether uVDBP parallels renal damage and responds to therapy intensification in humans. In adriamycin (ADR) rats, uVDBP was strongly elevated vs controls (CON) already 6 wks after nephrosis induction (ADR: 727±674 [mean±SD] vs CON: 9±12 µg/d, p<0.01), i.e. before onset of pre-fibrotic and inflammatory tubulointerstitial damage, and at all following 6-wk time points until end of follow up at 30 wks (ADR: 1403±1026 vs CON: 206±132 µg/d, p<0.01). In multivariate regression analysis, uVDBP was associated with tubulointerstitial macrophage accumulation (standardized beta = 0.47, p = 0.01) and collagen III expression (standardized beta = 0.44, p = 0.02) independently of albuminuria. In humans, uVDBP was increased in 100 microalbuminuric subjects (44±93 µg/d) and in 47 CKD patients with overt proteinuria (9.2±13.0 mg/d) compared to 100 normoalbuminuric subjects (12±12 µg/d, p<0.001). In CKD patients, uVDBP responded to intensification of renoprotective therapy (ACEi+liberal sodium: 9.2±13.0 mg/d vs dual RAAS blockade+low sodium: 2747±4013, p<0.001), but remained still >100-fold increased during maximal therapy vs normoalbuminurics (p<0.001), consistent with persisting tubulointerstitial damage. UVDBP was associated with tubular and inflammatory damage markers KIM-1 (standardized beta = 0.52, p<0.001), beta-2-microglobuline (st.beta = 0.45, p<0.001), cystatin C (st.beta = 0.40, p<0.001), MCP-1 (st.beta = 0.31, p<0.001) and NGAL (st.beta = 0.20, p = 0.005), independently of albuminuria. UVDBP may be a novel urinary biomarker of tubulointerstitial damage. Prospectively designed studies are required to validate our findings and confirm its relevance in the clinical setting.
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DOI:
10.1136/bmj.d4366
发表时间:
2011-07-26
期刊:
BMJ (Clinical research ed.)
影响因子:
--
作者:
Slagman MC;Waanders F;Hemmelder MH;Woittiez AJ;Janssen WM;Lambers Heerspink HJ;Navis G;Laverman GD;HOlland NEphrology STudy Group
通讯作者:
HOlland NEphrology STudy Group
影响因子:
16.2
作者:
Nauta FL;Boertien WE;Bakker SJ;van Goor H;van Oeveren W;de Jong PE;Bilo H;Gansevoort RT
通讯作者:
Gansevoort RT
影响因子:
19.6
作者:
BERTANI, T;CUTILLO, F;REMUZZI, G
通讯作者:
REMUZZI, G
影响因子:
5.5
作者:
Gekle, M;Knaus, P;Christensen, EI
通讯作者:
Christensen, EI
影响因子:
7.3
作者:
Kramer, AB;Laverman, GD;Navis, G
通讯作者:
Navis, G