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Observational Study
. 2020 Oct 19;12(10):3187.
doi: 10.3390/nu12103187.

Association between Serum Zinc Levels and Clinical Index or the Body Composition in Incident Hemodialysis Patients

Affiliations
Observational Study

Association between Serum Zinc Levels and Clinical Index or the Body Composition in Incident Hemodialysis Patients

Tatsunori Toida et al. Nutrients. .

Abstract

Background: The relationships between serum zinc levels and body composition or clinical outcomes of incident hemodialysis (HD) patients remain unclear.

Methods: This prospective observational study examined the relationships between serum zinc levels and clinical indexes, including body composition, in 142 incident HD patients using a bioelectrical impedance analysis. Patients were divided into three groups according to baseline serum zinc levels: tertile, <45, 45-59, and ≥60 µg/dL. The reference group was set as ≥60 µg/dL. Cox's regression analysis was performed to investigate the relationships between serum zinc categories and cardiovascular events and all-cause mortality after adjustments for potential confounders.

Results: Serum zinc levels positively correlated with the nutritional index and negatively correlated with fluid volume markers. In a mean follow-up of 2.5 years, there were 20 cases of cardiovascular events and 15 of all-cause mortality. In the Cox's regression analysis for cardiovascular events and all-cause mortality, the hazard ratio increased with a decrease in serum zinc levels, but was not significant.

Conclusion: Serum zinc levels were associated with nutritional and fluid volume markers in incident HD patients. To clarify the relationship between serum zinc levels and cardiovascular events or mortality, further studies with a larger number of cases will be necessary.

Keywords: hemodialysis; nutritional status; serum zinc levels.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flow of patients through the study.
Figure 2
Figure 2
Histogram of serum zinc levels at baseline.
Figure 3
Figure 3
Kaplan–Meier estimates and Log rank test for all-cause mortality (a) and cardiovascular disease (CVD)-free (b) rates among baseline serum zinc levels.

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