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Cystatin C as risk factor for cardiovascular events and all-cause mortality in the general population. The Tromsø Study
Toft, Ingrid Solbu, Marit Kronborg, Jens Mathisen, Ulla D. Eriksen, Bjørn O. Storhaug, Hilde Melsom, Toralf Løchen, Maja-Lisa Mathiesen, E. B. Njølstad, Inger
Toft, Ingrid
Solbu, Marit
Kronborg, Jens
Mathisen, Ulla D.
Eriksen, Bjørn O.
Storhaug, Hilde
Melsom, Toralf
Løchen, Maja-Lisa
Mathiesen, E. B.
Njølstad, Inger
Abstract
Background: Glomerular filtration rate < 60 mL/min/1.73m2 is associated with increased cardiovascular risk. Cystatin C is believed to be a better tool than creatinine for detection of mild renal dysfunction ( > 60 mL/min/1.73m2) and possibly a more sensitive marker for cardiovascular risk and all-cause mortality. We examined the association of cystatin C with cardiovascular morbidity and all-cause mortality in a prospective population-based study. Methods: Cystatin C was measured in 2852 men and 3153 women in the Tromsø Study 1994/95. Gender-specific associations during 12 years of follow-up for all-cause mortality and 9.5 years for myocardial infarction (MI) and ischaemic stroke were assessed (Cox proportional hazard ratios, HRs). Results: During follow-up, 591 MIs, 293 ischaemic strokes and 1262 deaths occurred. In women, HR for all-cause mortality was increased in the upper cystatin C quartile (≥0.93 mg/L) compared with the lowest quartile (≤0.73 mg/L); 1.38, 95% confidence interval 1.04–1.84. A significant interaction with gender was observed. One SD (0.17 mg/L) increase in cystatin C was associated with 9% higher risk of death in women, also when persons with a cancer history were excluded. Crude HRs for MI and ischaemic stroke were increased in both genders, but the associations did not persist after multivariable adjustments. No independent associations with end points were observed in non-gender-specific analyses. Conclusions: Cystatin C was not independently associated with fatal and non-fatal MI or ischaemic stroke in the general population. However, cystatin C was a risk factor for all-cause mortality in women.
Keywords
Date
2012
Type
Journal article
Journal
Nephrology Dialysis Transplantation
Book
Volume
27
Issue
7
Page Range
2780-2787
Article Number
ACU Department
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Open Access Status
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Controlled