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Complement C3 and Risk of Diabetic Microvascular Disease: A Cohort Study of 95202 Individuals from the General Population.
- Source :
-
Clinical chemistry [Clin Chem] 2018 Jul; Vol. 64 (7), pp. 1113-1124. Date of Electronic Publication: 2018 Mar 09. - Publication Year :
- 2018
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Abstract
- Background: Whether the complement system is involved in the development of diabetic microvascular disease is unknown. We tested the hypothesis that high concentrations of complement C3 are associated with increased risk of diabetic retinopathy, nephropathy, and neuropathy in individuals from the general population.<br />Methods: We studied 95202 individuals from the general population with baseline measurements of complement C3, genotyped for rs1065489, rs429608, and rs448260 determining concentrations of complement C3, and enrolled in the Copenhagen General Population Study from 2003 through 2013, following them until April 10, 2013. Rs1065489, rs429608, and rs448260 were identified with genome-wide association scans in 3752 individuals from the Copenhagen City Heart Study.<br />Results: The cumulative incidence was increased from the lowest tertile to the highest tertile of complement C3 for diabetic retinopathy (log-rank trend, P = 1 × 10 <superscript>-20</superscript> ), nephropathy ( P = 7 × 10 <superscript>-15</superscript> ), and neuropathy ( P = 5 × 10 <superscript>-10</superscript> ). Multifactorially adjusted hazard ratios for a 1 SD higher concentration of complement C3 were 1.87 (95% CI, 1.61-2.18) for diabetic retinopathy, 1.90 (1.62-2.23) for diabetic nephropathy, and 1.56 (1.29-1.89) for diabetic neuropathy. The multifactorially adjusted hazard ratio for individuals with the highest vs lowest tertile of complement C3 was 3.29 (1.78-6.07) for retinopathy, 2.71 (1.42-5.16) for nephropathy, and 2.40 (1.26-4.54) for neuropathy.<br />Conclusions: High baseline concentrations of complement C3 were associated with increased risk of diabetic retinopathy, nephropathy, and neuropathy in individuals from the general population. These epidemiological findings were substantiated by a Mendelian randomization approach, potentially indicating causality.<br /> (© 2018 American Association for Clinical Chemistry.)
- Subjects :
- Cohort Studies
Denmark epidemiology
Diabetic Angiopathies epidemiology
Diabetic Angiopathies genetics
Diabetic Nephropathies blood
Diabetic Nephropathies epidemiology
Diabetic Nephropathies genetics
Diabetic Neuropathies blood
Diabetic Neuropathies epidemiology
Diabetic Neuropathies genetics
Diabetic Retinopathy blood
Diabetic Retinopathy epidemiology
Diabetic Retinopathy genetics
Humans
Prospective Studies
Risk Factors
Complement C3 metabolism
Diabetic Angiopathies blood
Population Surveillance
Subjects
Details
- Language :
- English
- ISSN :
- 1530-8561
- Volume :
- 64
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Clinical chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 29523638
- Full Text :
- https://doi.org/10.1373/clinchem.2018.287581