Factors affecting the progression of renal dysfunction and the importance of salt restriction in patients with type 2 diabetic kidney disease.

Abstract:

BACKGROUND:Type 2 diabetic kidney disease (DKD) is the most common cause of end-stage renal failure, and the prevention of its progression has been a topic of discussion. METHODS:Sixty type 2 DKD patients were retrospectively evaluated for 1 year. Factors independently affecting the annual Ccr decline were examined by multivariable linear regression analysis. Patients were further divided into 2 groups based on their degree of renal function, and between-group differences at study initiation were evaluated. RESULTS:Ccr values were 21.0 ± 11.8 mL/min/1.73 m(2) at study initiation, and 15.7 ± 10.9 mL/min/1.73 m(2) after 1 year of observation. The multivariable linear regression analysis indicated salt intake (standardized coefficient: -0.34, P = 0.010) and urinary protein excretion (standardized coefficient: -0.33, P = 0.011) to be factors independently affecting the annual Ccr decline. Although decliners (-9.8 ± 4.7 mL/min/1.73 m(2)/year) had a significantly higher salt intake than non-decliners (-1.1 ± 3.8 mL/min/1.73 m(2)/year) at study initiation, this difference disappeared at the end of the study as a result of intensive dietary education. In 21 decliners with an additional year of follow-up, the annual Ccr decline significantly improved from -10.1 ± 5.3 to -5.3 ± 7.4 mL/min/1.73 m(2)/year (P = 0.02). CONCLUSION:Salt intake and urinary protein excretion were associated with annual Ccr decline in type 2 DKD patients. Furthermore, dietary education covering salt intake may have positively affected the change in Ccr.

journal_name

Clin Exp Nephrol

authors

Kanauchi N,Ookawara S,Ito K,Mogi S,Yoshida I,Kakei M,Ishikawa SE,Morishita Y,Tabei K

doi

10.1007/s10157-015-1118-y

subject

Has Abstract

pub_date

2015-12-01 00:00:00

pages

1120-6

issue

6

eissn

1342-1751

issn

1437-7799

pii

10.1007/s10157-015-1118-y

journal_volume

19

pub_type

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