Clustering of Risk Factors in Parents of Patients With Type 1 Diabetes and Nephropathy
- Lena M. Thorn, MD12,
- Carol Forsblom, DMSC12,
- Johan Fagerudd, MD, DMSC12,
- Kim Pettersson-Fernholm, MD, DMSC12,
- Riika Kilpikari, MSC1,
- Per-Henrik Groop, MD, DMSC12 and
- on behalf of the FinnDiane Study Group
- 1Folkhälsan Institute of Genetics, Folkhälsan Research Center, Biomedicum Helsinki, Helsinki, Finland
- 2Department of Medicine, Division of Nephrology, Helsinki University Hospital, Helsinki, Finland
- Address correspondence and reprint requests to Per-Henrik Groop, MD, DMSc, Folkhälsan Research Center, Biomedicum Helsinki, POB 63, FIN-00014, University of Helsinki, Helsinki, Finland. E-mail: per-henrik.groop{at}helsinki.fi
Abstract
OBJECTIVE—To assess the impact of parental risk factors for diabetic nephropathy.
RESEARCH DESIGN AND METHODS—This cross-sectional study included 2,355 type 1 diabetic patients from the FinnDiane (Finnish Diabetic Nephropathy) study. Diabetic nephropathy was defined as macroalbuminuria (urinary albumin excretion rate >200 μg/min or >300 mg/24 h) or end-stage renal disease. Information was available from 4,676 parents. Parental scores were calculated based on the number of various traits in the parents.
RESULTS—Patients with diabetic nephropathy, compared with those without diabetic nephropathy, had a higher prevalence of maternal (41 vs. 35%, P = 0.046) and parental (62 vs. 55%, P = 0.044) hypertension, maternal stroke (7.6 vs. 5.1%, P = 0.044), and maternal (1.4 vs. 0.7%, P = 0.058) and parental (4.3 vs. 2.9%, P = 0.030) type 1 diabetes. If both, compared with none, of the parents had hypertension, the adjusted odds ratio (OR) for diabetic nephropathy in offspring was 1.56 (95% CI 1.13–2.15). The adjusted OR for diabetic nephropathy was 2.13 (1.36–3.33) for the parental hypertension–diabetes score (3–4 vs. 0 points) and 2.13 (1.37–3.33) for the parental hypertension–cardiovascular disease (CVD)–diabetes score (4–6 vs. 0 points). Fathers of patients with diabetic nephropathy, compared with those without diabetic nephropathy, had reduced overall survival (log-rank P = 0.04) and reduced cardiovascular survival (log-rank P = 0.03).
CONCLUSIONS—A cluster of parental hypertension, CVD, and diabetes is associated with diabetic nephropathy in type 1 diabetes, as is paternal mortality.
- CVD, cardiovascular disease
- FinnDiane, Finnish Diabetic Nephropathy
- UAER, urinary albumin excretion rate
Footnotes
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Published ahead of print at http://care.diabetesjournals.org on 2 March 2007. DOI: 10.2337/dc06-2033.
Additional information for this article can be found in an online appendix at http://dx.doi.org/10.2337/dc06-2033.
A table elsewhere in this issue shows conventional and Système International (SI) units and conversion factors for many substances.
The costs of publication of this article were defrayed in part by the payment of page charges. This article must therefore be hereby marked “advertisement” in accordance with 18 U.S.C Section 1734 solely to indicate this fact.
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- Accepted February 7, 2007.
- Received October 2, 2006.
- DIABETES CARE
