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Serum indoxyl sulfate predicts adverse cardiovascular events in patients with chronic kidney disease

Pei-Chun Fan, J. Chang, Chia-Ni Lin, Cheng-Chia Lee, Yi-Ting Chen, P. Chu, George Kou, Yueh-an lu et al.

Journal of the Formosan Medical Association = Taiwan yi zhi, 2019

147 participants · 50 citations

Abstract

BACKGROUND/PURPOSE

Indoxyl sulfate (IS) is a protein-binding molecule that exhibits cardiovascular (CV) toxicity. This study determined whether the serum IS level can be used to predict the risk of major adverse CV events (MACEs) in patients with chronic kidney disease (CKD).

METHODS

We studied 147 patients with CKD stage 1-5 over a 3-year follow-up period. IS was measured through mass spectrometry. Patients' demographics were collected and analyzed to predict outcomes by using multivariable Cox regression.

RESULTS

Forty-seven (32.0%) patients had MACEs. IS remained significantly associated with MACEs after multivariable regression analysis. The area under the receiver operating characteristic curve for IS levels was 0.708 (95% confidence interval: 0.618-0.798).

CONCLUSION

IS may have a critical role in the prediction of CV disease in patients with CKD. Further large-scale investigations are warranted and suggested.

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