Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study

Background: Sodium harmony is closely correlated with the progression of chronic kidney disease (CKD). Objectives: The current study aims to explore the significance of the circadian rhythm of urinary sodium excretion in CKD management and to help establish individualized salt restriction strategies...

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Main Authors: Yu He, Jiawen Li, Jialing Rao, Weiyan Lai, Qin Wei, Haiteng Li, Yuxuan Li, Hui Peng, Jun Zhang
Format: Article
Language:English
Published: SAGE Publishing 2025-06-01
Series:Therapeutic Advances in Chronic Disease
Online Access:https://doi.org/10.1177/20406223251344474
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author Yu He
Jiawen Li
Jialing Rao
Weiyan Lai
Qin Wei
Haiteng Li
Yuxuan Li
Hui Peng
Jun Zhang
author_facet Yu He
Jiawen Li
Jialing Rao
Weiyan Lai
Qin Wei
Haiteng Li
Yuxuan Li
Hui Peng
Jun Zhang
author_sort Yu He
collection DOAJ
description Background: Sodium harmony is closely correlated with the progression of chronic kidney disease (CKD). Objectives: The current study aims to explore the significance of the circadian rhythm of urinary sodium excretion in CKD management and to help establish individualized salt restriction strategies. Design: This is a prospective study among inpatients with CKD. Methods: The study included 715 participants with CKD from the Third Affiliated Hospital of Sun Yat-Sen University. Multivariable Cox regression models and restricted cubic splines were employed to explore the independent and joint associations of 24-h urinary sodium and sodium rhythm with prognosis of CKD. Results: During a median follow-up of 6.92 years, 286 major renal events, 112 MACE, 160 deaths, and 321 composite events were documented. 24-h urinary sodium was not associated with any outcomes. However, there were dose–response associations of diurnal sodium/24-h urinary sodium with major renal events ( p overall  < 0.001, p nonlinearity  = 0.016) and composite events ( p overall  < 0.001, p nonlinearity  = 0.129). Compared with the combination of low 24-h sodium and normal sodium rhythm, the combination of high 24-h sodium and abnormal sodium rhythm had the highest risk of incident major renal events (hazard ratio, 1.62; 95% confidence interval, 1.04–2.51). A significant interaction was observed between sodium intake and sodium rhythm in associations with composite events ( p for interaction = 0.015). Conclusion: The circadian rhythm of sodium excretion emerges as a novel and potentially more sensitive risk factor for the prognosis of CKD. Furthermore, the association between sodium intake and progression of CKD was notably pronounced among individuals with abnormal sodium rhythms. Efforts to implement individualized salt restriction strategies are warranted.
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spelling doaj-art-99fb06a203d84661b30febd71495d3592025-08-20T03:31:53ZengSAGE PublishingTherapeutic Advances in Chronic Disease2040-62312025-06-011610.1177/20406223251344474Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective studyYu HeJiawen LiJialing RaoWeiyan LaiQin WeiHaiteng LiYuxuan LiHui PengJun ZhangBackground: Sodium harmony is closely correlated with the progression of chronic kidney disease (CKD). Objectives: The current study aims to explore the significance of the circadian rhythm of urinary sodium excretion in CKD management and to help establish individualized salt restriction strategies. Design: This is a prospective study among inpatients with CKD. Methods: The study included 715 participants with CKD from the Third Affiliated Hospital of Sun Yat-Sen University. Multivariable Cox regression models and restricted cubic splines were employed to explore the independent and joint associations of 24-h urinary sodium and sodium rhythm with prognosis of CKD. Results: During a median follow-up of 6.92 years, 286 major renal events, 112 MACE, 160 deaths, and 321 composite events were documented. 24-h urinary sodium was not associated with any outcomes. However, there were dose–response associations of diurnal sodium/24-h urinary sodium with major renal events ( p overall  < 0.001, p nonlinearity  = 0.016) and composite events ( p overall  < 0.001, p nonlinearity  = 0.129). Compared with the combination of low 24-h sodium and normal sodium rhythm, the combination of high 24-h sodium and abnormal sodium rhythm had the highest risk of incident major renal events (hazard ratio, 1.62; 95% confidence interval, 1.04–2.51). A significant interaction was observed between sodium intake and sodium rhythm in associations with composite events ( p for interaction = 0.015). Conclusion: The circadian rhythm of sodium excretion emerges as a novel and potentially more sensitive risk factor for the prognosis of CKD. Furthermore, the association between sodium intake and progression of CKD was notably pronounced among individuals with abnormal sodium rhythms. Efforts to implement individualized salt restriction strategies are warranted.https://doi.org/10.1177/20406223251344474
spellingShingle Yu He
Jiawen Li
Jialing Rao
Weiyan Lai
Qin Wei
Haiteng Li
Yuxuan Li
Hui Peng
Jun Zhang
Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
Therapeutic Advances in Chronic Disease
title Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
title_full Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
title_fullStr Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
title_full_unstemmed Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
title_short Joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease: a prospective study
title_sort joint effects of sodium intake and circadian rhythm of urinary sodium excretion on prognosis of chronic kidney disease a prospective study
url https://doi.org/10.1177/20406223251344474
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