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.
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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
de Borst MH
中科院分区:
综合性期刊3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

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非侵入性肾小管间质损伤标记物可能有助于更好地滴定和监测肾保护治疗。我们研究了尿维生素D结合蛋白排泄(uVDBP)作为阿霉素大鼠肾小管间质炎症和纤维化标志物的价值,并测试了uVDBP是否与人类肾损伤平行以及对治疗强化的反应。阿霉素(ADR)组大鼠在肾病诱导后6周,uVDBP较对照组(CON)显著升高(ADR:727±674 [平均值±SD] vs CON:9±12 µg/d,p<0.01),即在纤维化前和炎性肾小管间质损伤发生前,以及在6周后的所有时间点,直至30周随访结束(ADR:1403±1026 vs CON:206±132 µg/d,p<0.01)。在多变量回归分析中,uVDBP与肾小管间质巨噬细胞蓄积(标准化β = 0.47,p = 0.01)和III型胶原表达(标准化β = 0.44,p = 0.02)相关,与白蛋白尿无关。        在人类中,与100例正常白蛋白尿受试者(12±12 µg/d,p<0.001)相比,100例微量白蛋白尿受试者(44±93 µg/d)和47例有明显蛋白尿的CKD患者(9.2±13.0 mg/d)的uVDBP升高。在CKD患者中,uVDBP对强化肾保护治疗有反应(ACEi+自由钠:9.2±13.0 mg/d vs双重RAAS阻断+低钠:2747±4013,p<0.001),但在最大剂量治疗期间与正常白蛋白尿相比仍增加>100倍(p<0.001),与持续的肾小管间质损伤一致。UVDBP与肾小管和炎症损伤标记物KIM-1(标准化β = 0.52,p<0.001)、β-2-微球蛋白(st. β = 0.45,p<0.001)、胱抑素C(st. β = 0.40,p<0.001)、MCP-1(st. β = 0.31,p<0.001)和NGAL(st. β = 0.20,p = 0.005)相关,与白蛋白尿无关。            UVDBP可能是肾小管间质损伤的一种新的尿生物标志物。需要专业设计的研究来验证我们的发现并确认其在临床环境中的相关性。
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.
DOI: 10.1136/bmj.d4366
发表时间: 2011-07-26
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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
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发表时间: 1986-10-01
影响因子: 19.6
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发表时间: 2003-10-15
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发表时间: 2003-09-01
影响因子: 7.3
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