Plasma dimethylarginine levels in chronic hemodialysis patients are independent of the type of dialyzer applied

Muriel P C Grooteman, Inge M P M J Wauters, Tom Teerlink, Jos W R Twisk, Menso J Nubé

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BACKGROUND: Asymmetric dimethylarginine (ADMA) levels are increased in hemodialysis (HD) patients. Reports on the effect of various dialysis strategies on ADMA, symmetric dimethylarginine (SDMA) and L-arginine levels are inconclusive.

PATIENTS/METHODS: In this randomized crossover study, 15 patients were dialyzed for 4 weeks with 4 dialyzers, differing in biocompatibility and flux. Dimethylarginine and L-arginine levels were assessed at baseline, and after 4 weeks both before and after HD.

RESULTS: During HD, ADMA and SDMA levels decreased significantly with all dialyzers. Dimethylarginine and L-arginine levels remained stable after 4 weeks of HD with each membrane. After pooling all data, values were mainly explained by variation between time points and patients, not by the type of dialyzer.

CONCLUSION: Despite an intradialytic decrease in dimethylarginines, no changes occurred after 4 weeks of HD with either membrane. Furthermore, the variability of AMDA, SDMA and L-arginine levels was far more dependent on patient-related factors than on the type of dialyzer applied.

Original languageEnglish
Pages (from-to)281-9
Number of pages9
JournalBlood Purification
Issue number3
Publication statusPublished - 2007

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