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A Murine Model of Hemodialysis Access-Related Hand Dysfunction
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Changes in Bone Turnover Markers Associated With a Single Dialysis Session.

Alix Mackowiak1, Antoine Bouquegneau2, Bernard Dubois2

  • 1Clinical Chemistry, Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium.

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Summary

Bone turnover markers (BTMs) like BALP, TRACP5b, and iPINP are reliable for CKD patients on dialysis. However, β-CTX-I levels are significantly impacted by dialysis, requiring cautious interpretation.

Keywords:
bone turnover markersdialysis membranehemodiafiltrationhemodialysis

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Area of Science:

  • Nephrology
  • Bone Metabolism
  • Biochemistry

Background:

  • Chronic kidney disease (CKD) disrupts mineral and bone metabolism, elevating fracture risk.
  • Bone turnover markers (BTMs) like BALP, TRACP5b, iPINP, and β-CTX-I are crucial for assessing bone health.
  • The behavior of BTMs during dialysis remains largely uncharacterized.

Purpose of the Study:

  • To evaluate the impact of dialysis techniques and membrane types on BTM concentrations.
  • To determine the clinical significance of BTM changes post-dialysis.

Main Methods:

  • Serum samples collected pre- and post-dialysis from CKD patients.
  • Analysis of BTM concentrations using nonparametric statistics.
  • Evaluation of clinical relevance using least significant change (LSC) thresholds.

Main Results:

  • BALP, TRACP5b, and iPINP showed minimal post-dialysis fluctuations, below clinical significance thresholds.
  • β-CTX-I demonstrated a significant decrease after hemodialysis, particularly with high-permeability membranes.
  • Observed changes in β-CTX-I exceeded LSC thresholds, indicating clinical relevance.

Conclusions:

  • BALP, TRACP5b, and iPINP are robust BTMs for CKD patients undergoing dialysis.
  • β-CTX-I is significantly influenced by dialysis parameters and warrants cautious interpretation in this population.