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Changes in plasma sclerostin level associated with use of a medium cut-off dialyzer in end-stage renal disease

Seon-Ho Ahn1, Mi Mi Ko2, Ju Hung Song1

  • 1Division of Nephrology, Department of Internal Medicine, Wonkwang University Hospital, Wonkwang University School of Medicine Hospital, Iksan, Republic of Korea.

Kidney Research and Clinical Practice
|March 22, 2021
PubMed
Abstract

Insights

Medium cut-off (MCO) dialyzers effectively remove larger middle molecules in end-stage renal disease patients, suppressing sclerostin increase without albumin loss. This improves dialysis adequacy and patient outcomes.

Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Biomarker Research

Background:

  • Larger middle molecules contribute to cardiovascular complications in end-stage renal disease (ESRD).
  • High-flux dialyzers inadequately remove these larger middle molecules.
  • Medium cut-off (MCO) membranes show potential for enhanced removal of larger middle molecules.

Purpose of the Study:

  • To evaluate the long-term effects of MCO membranes on larger middle molecule levels in ESRD patients.
  • To assess the impact of MCO membranes on specific biomarkers like sclerostin, GDF-15, and FGF-23.
  • To compare the efficacy of MCO membranes versus standard dialyzers in improving dialysis adequacy.

Main Methods:

  • Prospective analysis of 34 ESRD patients over 12 months.
  • Patients were divided into control and MCO membrane groups.
  • Plasma levels of sclerostin, GDF-15, FGF-23, and small solutes were measured, along with single-pool Kt/V (spKt/V) and reduction ratios.

Main Results:

  • MCO dialyzers significantly increased solute clearance for larger middle molecules.
  • Plasma sclerostin levels showed no significant increase in the MCO group and a significant difference compared to the control group.
  • Dialytic adequacy (spKt/V) improved significantly in the MCO group without albumin loss.

Conclusions:

  • MCO dialyzers enhance dialytic adequacy in ESRD patients.
  • MCO membranes effectively suppress the increase of plasma sclerostin levels.
  • MCO dialyzers offer a safe and effective option for managing larger middle molecules in ESRD without compromising protein levels.
Keywords:
DialysisMembranesMolecular weightRenal insufficiency

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