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. 2013 Oct;36(10):3227-33.
doi: 10.2337/dc13-0281. Epub 2013 Jun 18.

Association between remission of macroalbuminuria and preservation of renal function in patients with type 2 diabetes with overt proteinuria

Hiroki Yokoyama  1 , Shin-ichi Araki, Jun Honjo, Shinichiro Okizaki, Daishiro Yamada, Ryushi Shudo, Hitoshi Shimizu, Hirohito Sone, Tatsumi Moriya, Masakazu Haneda
Affiliations

Association between remission of macroalbuminuria and preservation of renal function in patients with type 2 diabetes with overt proteinuria

Hiroki Yokoyama et al. Diabetes Care. 2013 Oct.

Abstract

Objective: Studies on the rate of remission of macroalbuminuria in patients with type 2 diabetes mellitus (T2DM) and the effects of reduction in albuminuria on renal prognosis in a primary care setting are absolutely lacking.

Research design and methods: A total of 211 T2DM patients with albuminuria≥300 mg/g were enrolled in a prospective observational study (mean of 4.5 years). The incidence of patients with remission of macroalbuminuria at every 1-year study time point after starting intensified diabetes treatment and the factors associated with remission were evaluated. The association of reduction in albuminuria with renal events (doubling of serum creatinine and end-stage renal disease) was also investigated.

Results: During the 5-year study period, remission to microalbuminuria occurred in 116 patients and the 5-year cumulative incidence was 58.3%. Notably, most cases (82.8%) obtained remission at the 1-year study time point. The remission rate increased with achieving therapeutic targets for blood pressure and blood glucose. Remission and reduction in albuminuria of ≥50% were associated with preservation of renal function. In particular, patients who obtained both remission and 50% reduction at the 1-year study time point exhibited a significantly reduced risk for renal events as compared with those with no remission and no reduction (adjusted hazard ratio 0.30 [95% CI 0.12-0.76]).

Conclusions: Remission of macroalbuminuria occurs frequently and is associated with the preservation of renal function in T2DM patients. The initial adequate diabetes treatment aimed at reducing albuminuria may lead to improved renal prognosis in the primary care setting.

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