Free functional annexin levels in plasma as a biomarker of cardiovascular risk

摘要

The present invention relates to a method for diagnosing the occurrence of a vascular dysfunction or a vascular injury in a subject, said method comprising a step consisting of determining in a plasma sample obtained from said subject the level of free annexin. The present invention further relates to a method for determining whether a subject is at risk for severe vasculopathy, cardiovascular complications and cardiovascular disease, said method comprising a step consisting of determining in a plasma sample obtained from said subject the level of free annexin. Preferably, the methods further comprise the steps consisting of determining the level of circulating phosphatidylserine positive (PS+) microparticles (MPs) in the plasma sample obtained from said subject and calculating the ratio free annexin / circulating PS+ MPs. The invention also relates to a kit for use in a method according to the invention and to a phosphatidylserine antagonist, for use in a method of treatment of severe vasculopathy, cardiovascular complications and cardiovascular disease in a subject having a decreased level of free annexin as compared to a free annexin reference level, wherein the method comprises a determination of the free annexin level in a plasma sample of said subject. Preferably, a phosphatidylserine antagonist is for use in a method of treatment of severe vasculopathy, cardiovascular complications and cardiovascular disease in a subject having a decreased ratio of free annexin / circulating PS+ MPs as compared to a free annexin / circulating PS+ MPs reference ratio, wherein the method further comprises the steps consisting of determining the circulating PS+ MPs level in said plasma sample and calculating the free annexin / circulating P8+ MPs ratio.