Oxidative Balance Score and Chronic Kidney Disease

Area of Science:

• Nephrology
• Nutritional Epidemiology
• Oxidative Stress Research

Background:

• The oxidative balance score (OBS) quantifies an individual's pro- and antioxidant exposure.
• Renal disease encompasses conditions affecting kidney function, including chronic kidney disease (CKD) and end-stage renal disease (ESRD).

Purpose of the Study:

• To investigate the association between the oxidative balance score (OBS) and the prevalence and incidence of renal disease.
• To determine if a higher OBS correlates with a lower risk of developing kidney damage.

Main Methods:

• Utilized data from the Reasons for Geographic and Racial Differences in Stroke cohort study.
• Calculated OBS based on 13 dietary and lifestyle pro- and antioxidant factors.
• Employed multivariable logistic regression and Cox proportional hazards models to assess associations with albuminuria, CKD, and ESRD.

Main Results:

• A cohort of 19,461 participants was analyzed, with baseline prevalence of albuminuria at 12.9% and CKD at 10.1%.
• Higher OBS quartiles demonstrated a significant inverse association with the prevalence of CKD (p for trend <.01).
• No significant associations were found between OBS and the incidence of albuminuria or ESRD in fully adjusted models.

Conclusions:

• Elevated OBS is associated with a lower prevalence of chronic kidney disease (CKD).
• The current study did not establish a clear temporal relationship between OBS and the incidence of end-stage renal disease (ESRD).
• Further research is needed to clarify the long-term impact of oxidative balance on renal disease progression.