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Dose-Response Relationship Between Thrombin-Activatable Fibrinolysis Inhibitor (TAFI) and Stroke: A Chinese Case-Control Study

Huixu Dai, Jingpu Shi, Qiao He, Hao Sun

Department of Clinical Epidemiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)

Med Sci Monit 2017; 23:4376-4381

DOI: 10.12659/MSM.906628

Available online:

Published: 2017-09-11


BACKGROUND: Because TAFI (thrombin-activatable fibrinolysis inhibitor) antigen varies widely among different populations, we performed this case-control study to explore the relationship between TAFI levels and stroke in a Chinese population.
MATERIAL AND METHODS: Our population-based case-control study included 217 stroke patients and 218 healthy controls. The plasma TAFI level was measured by immune turbidimetry. Univariate and multivariate logistic regression analyses were used to analyze the association between different TAFI levels and stroke and its subtypes. Restricted cubic spline (RCS) combined with logistic regression analysis were used to explore the dose-response relationship between TAFI levels and stroke.
RESULTS: The plasma TAFI levels of cases were much higher than in the control group (p=0.038) and this difference persisted even after adjustment (OR=2.2). In the elderly (aged over 60) and female subgroups, TAFI levels in stroke patients were higher than those in controls, and the results were also noted in ischemic stroke. The dose-response curve showed that, as a whole, with the increase of TAFI levels, the relative risk of stroke first increased and then decreased (p=0.0127). Similarly, in general, with the increase of TAFI levels, the curve showed that the relative risk of ischemic stroke first increased and then decreased (p=0.0110).
CONCLUSIONS: There was a definite correlation between TAFI levels and stroke in this Chinese population, and with the increase of TAFI levels, the relative risk of stroke or ischemic stroke first increased and then decreased.

Keywords: Carboxypeptidase U, Case-Control Studies, Dose-Response Relationship, Drug, Stroke



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