Highlights
- •NAC use was associated with reduced risk for progression to ESRDd.
- •Risk reduction was apparent in women, younger age, hypertension, the absence of diabetes mellitus and congestive heart failure.
- •The cumulative effect of NAC necessitate a prospective study.
Abstract
Background
We aimed to evaluate the potential benefits of N-acetylcysteine (NAC) on the risk of chronic kidney disease (CKD) progression to dialysis-requiring
end-stage renal disease (ESRDd).
Methods
In a population-based cohort study of 145,062 individuals, 123,608 CKD patients who
were followed up for 10 years were included, and CKD patients treated with NAC (ICD-9-CM) were compared with
those who were not treated. Using propensity score matching, we analyzed the predictors
of CKD progression to ESRDd by Cox proportional hazards regression with adjustments
for sex, age, and comorbidities, and evaluated the effect of NAC using cumulative
defined daily dose (cDDD).
Results
NAC use was associated with a reduced risk for progression to ESRDd [hazard ratio
(HR), 0.819; 95% confidence interval (CI), 0.781–0.965; P = 0.017]. Risk reduction was proportional to cDDD in NAC users compared with that in
NAC non users (HR, 0.835, 0.811, and 0.799 for cDDD 91–180, 181–360, and >360, respectively; P for trend = 0.018). Risk reduction was apparent in women (P = 0.001) and in younger-aged patients of 18–29 years (P = 0.021) and 30–39 years (P = 0.033), in the presence of hypertension (P = 0.003), and in the absence of diabetes mellitus (P = 0.042) and congestive heart failure (P = 0.036).
Conclusion
NAC use was associated with a reduced risk for progression to ESRDd. These results,
obtained from retrospective data, indicate that a prospective study is warranted.
Keywords
Abbreviations:
CKD (chronic kidney disease), ESRD (end-stage kidney disease), NAC (N-acetylcysteine), COPD (chronic obstructive pulmonary disease), NHI (National Health Insurance), NHIRD (NHI Research Database), ICD-9-CM (International Classification of Disease, Ninth Revision, Clinical Modification), ESRDd (dialysis-requiring ESRD), CHF (congestive heart failure), CCI (Charlson comorbidity index), DDD (defined daily dose), cDDD (cumulative DDD), HR (hazard ratio), CI (confidence interval), ACEI (angiotensin-converting-enzyme inhibitor), ARB (angiotensin receptor blocker)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: June 17, 2017
Accepted:
June 12,
2017
Received in revised form:
June 11,
2017
Received:
April 5,
2017
Identification
Copyright
© 2017 European Federation of Internal Medicine. Published by Elsevier B.V. All rights reserved.