Low-Grade Albuminuria and Incidence of Cardiovascular Disease Events in Nonhypertensive and Nondiabetic Individuals

  • Johan Ärnlöv
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Jane C. Evans
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • James B. Meigs
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Thomas J. Wang
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Caroline S. Fox
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Daniel Levy
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Emelia J. Benjamin
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Ralph B. D’Agostino
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...
  • Ramachandran S. Vasan
    From the National Heart, Lung and Blood Institute’s Framingham Heart Study (J.Ä., J.C.E., T.J.W., C.S.F., E.J.B., D.L., R.B.D., R.S.V.), National Heart, Lung and Blood Institute, Bethesda, Md (C.S.F., D.L.); Cardiology Section (E.J.B., R.S.V.), Preventive Medicine and Epidemiology (E.J.B., D.L., R.S.V.), Department of Medicine, Boston University School of Medicine, Boston, Mass; Mathematics Department, Boston University, Boston, Mass (R.B.D.); Cardiology Division (T.J.W.), General Medicine Division...

Bibliographic Information

Other Title
  • The Framingham Heart Study

Abstract

<jats:p> <jats:bold> <jats:italic>Background—</jats:italic> </jats:bold> Data are limited with regard to the relations of low-grade albuminuria (below the microalbuminuria threshold) and incidence of cardiovascular disease (CVD) events in nondiabetic, nonhypertensive individuals. </jats:p> <jats:p> <jats:bold> <jats:italic>Methods and Results—</jats:italic> </jats:bold> We examined the association of urinary albumin excretion (spot urine albumin indexed to creatinine [UACR]) and the incidence of CVD events and all-cause mortality in 1568 nonhypertensive, nondiabetic Framingham Offspring Study participants (mean age, 55 years; 58% women) free of CVD. On follow-up (median, 6 years), 54 participants (20 women) developed a first CVD event, and 49 (19 women) died. After adjustment for established risk factors, increasing UACR was associated with greater risk of CVD (hazards ratio [HR] per SD increment in log UACR, 1.36; 95% CI, 1.00 to 1.87) and death (HR per SD increment in log UACR, 1.55; 95% CI, 1.10 to 2.20). Participants with UACR greater than or equal to the sex-specific median (≥3.9 μg/mg for men, ≥7.5 μg/mg for women) experienced a nearly 3-fold risk of CVD (adjusted HR, 2.92; 95% CI, 1.57 to 5.44; <jats:italic>P</jats:italic> <0.001) and a borderline significantly increased risk of death (adjusted HR, 1.75; 95% CI, 0.95 to 3.22; <jats:italic>P</jats:italic> =0.08) compared with those with UACR below the median. The increased CVD risk associated with UACR at or above the median remained robust in analyses restricted to individuals without microalbuminuria (n=1470) and in subgroups with intermediate (n=1469) and low (n=1186) pretest probabilities of CVD. </jats:p> <jats:p> <jats:bold> <jats:italic>Conclusions—</jats:italic> </jats:bold> In our community-based sample of middle-aged nonhypertensive, nondiabetic individuals, low levels of urinary albumin excretion well below the current microalbuminuria threshold predicted the development of CVD. Our observations add to the growing body of evidence that challenges the notion that UACR <30 μg/mg indicates “normal” albumin excretion. </jats:p>

Journal

  • Circulation

    Circulation 112 (7), 969-975, 2005-08-16

    Ovid Technologies (Wolters Kluwer Health)

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