Platelets lipidomics study of blood stasis rat model by using liquid chromatography‐tandem mass spectrometry

This study analyzed a lipidomic profile of platelets from blood stasis rats by liquid chromatography-tandem mass spectrometry. The blood stasis rat was established by low-dose continuous subcutaneous injection of adrenaline, and the evaluation indexes included hemorheology and platelet aggregation. Principal component analysis and partial least-squares discriminant analysis were used to analyze platelet lipidomics, and p-value < 0.05, fold change > 1.5, and variable importance plot > 2 were used to screen potential biomarkers. Then, the biomarkers were optimized by the receiver operating characteristic curve. Compared with the normal rat, the blood stasis model group's whole blood viscosity and platelet aggregation rate were also significantly increased at different shear rates (p < 0.05). Twenty-four potential lipid biomarkers showed significant changes in platelets between the two groups. Among them, six long-chain acylcarnitine components and three sphingosine components showed a consistent downward trend, suggesting that these two kinds of components may play an essential role in the process of platelet aggregation. Liquid chromatography-tandem mass spectrometry-based lipidomics studies provide much information to understand the pathology of platelets in blood stasis.