PMID- 23545236 OWN - NLM STAT- MEDLINE DCOM- 20140130 LR - 20151119 IS - 1872-9177 (Electronic) IS - 1769-7255 (Linking) VI - 9 IP - 3 DP - 2013 Jun TI - [Bone biomarkers in haemodialysis patients: bone alkaline phosphatase or ss-Crosslaps?]. PG - 154-9 LID - S1769-7255(13)00049-7 [pii] LID - 10.1016/j.nephro.2013.02.006 [doi] AB - BACKGROUND: Bone turnover (BT) abnormalities are frequently observed in patients with chronic kidney disease. Bone biopsy remains the gold standard for diagnosis; however, its invasive nature has led to its decreased utilisation. The serum parathyroid hormone (PTH) level is not a reliable bone marker (BM) for BT assessment. The latest international recommendations suggest the use of total alkaline phosphatase (t-ALP) or bone-specific alkaline phosphatase (b-ALP), but not ss-CrossLaps (CTX). We compared b-ALP, t-ALP, and CTX levels in patients on haemodialysis (HD). METHODS: All HD patients at a single institution following a standard 3x4 to 3x5 hours schedule were included in the study, provided they were free from liver disease. Serum intact PTH, t-ALP, b-ALP, and CTX values were compared at baseline and after 18 months of treatment. A kinetic study was performed for pre- and postdialysis CTX values over a 2-week period. We described the longitudinal evolution of these BMs in two typical patients. RESULTS: A total of 98 patients on HD (46% female) were evaluated. The mean age was 69.8+/-11 years and the mean duration of dialysis was 54.4+/-61 months. At baseline, CTX (2.1+/-1 mug/L) correlated well with b-ALP (18+/-11 mug/L; r=0.64; P<0.001) and PTH (221+/-165 pg/mL; r=0.62; P<0.001). The changes in these values at 18 months were also correlated (DeltaCTX compared with Deltab-ALP: r=0.51; P<0.001; Deltab-ALP compared with DeltaPTH: r=0.37, P<0.01). b-ALP and t-ALP (245+/-132 U/L) were closely correlated (r=0.78), as was their variation over 18 months (r=0.67), but t-ALP did not correlate with PTH, and correlated poorly with CTX (r=0.38). The CTX reduction ratio during standard dialysis was approximately 70 to 75% over each session, although predialysis values remained stable. CONCLUSION: In HD patients, mean CTX values are five times higher than the normal range. CTX appears to be an alternative to b-ALP for assessing BT. b-ALP remains the standard BM, despite being expensive, infrequently available in many laboratories, and not useful for patients with liver disease. CI - Copyright (c) 2013 Association Societe de nephrologie. Published by Elsevier SAS. All rights reserved. FAU - Jean, Guillaume AU - Jean G AD - NEPHROCARE Tassin-Charcot, 7, avenue du Marechal-Foch, 69110 Sainte Foy-Les-Lyon, France. guillaume-jean-crat@wanadoo.fr FAU - Souberbielle, Jean-Claude AU - Souberbielle JC FAU - Granjon, Samuel AU - Granjon S FAU - Lorriaux, Christie AU - Lorriaux C FAU - Hurot, Jean-Marc AU - Hurot JM FAU - Mayor, Brice AU - Mayor B FAU - Deleaval, Patrik AU - Deleaval P FAU - Chazot, Charles AU - Chazot C LA - fre PT - English Abstract PT - Journal Article TT - Quels marqueurs osseux chez les patients hemodialyses: phosphatases alcalines osseuses ou ss-CrossLaps? DEP - 20130329 PL - France TA - Nephrol Ther JT - Nephrologie & therapeutique JID - 101248950 RN - 0 (Biomarkers) RN - 0 (Parathyroid Hormone) RN - 0 (Peptide Fragments) RN - 0 (glutamyl-lysyl-alanyl-histidyl-aspartyl-glycyl-glycyl-arginine) RN - 9007-34-5 (Collagen) RN - EC 3.1.3.1 (Alkaline Phosphatase) SB - IM MH - Aged MH - Aged, 80 and over MH - Alkaline Phosphatase/*blood MH - Biomarkers/*blood MH - *Bone Remodeling MH - Bone and Bones/*enzymology MH - Collagen/*blood MH - Female MH - Humans MH - Male MH - Middle Aged MH - Parathyroid Hormone/*blood MH - Peptide Fragments/*blood MH - Prospective Studies MH - Renal Dialysis/*statistics & numerical data MH - Renal Insufficiency, Chronic/*blood/therapy EDAT- 2013/04/03 06:00 MHDA- 2014/01/31 06:00 CRDT- 2013/04/03 06:00 PHST- 2012/12/05 00:00 [received] PHST- 2013/02/13 00:00 [revised] PHST- 2013/02/26 00:00 [accepted] PHST- 2013/04/03 06:00 [entrez] PHST- 2013/04/03 06:00 [pubmed] PHST- 2014/01/31 06:00 [medline] AID - S1769-7255(13)00049-7 [pii] AID - 10.1016/j.nephro.2013.02.006 [doi] PST - ppublish SO - Nephrol Ther. 2013 Jun;9(3):154-9. doi: 10.1016/j.nephro.2013.02.006. Epub 2013 Mar 29.