Objective：To study the distribution of gelsolin in human platelet and plasma,and the association with blood-stasis syndrome（BSS） of coronary heart disease（CHD）.Methods：Sixty patients with CHD（30 in BSS group and 30 in non-BSS group） and 30 healthy subjects（control group） were included in this study.The classification of the syndrome was based on clinical symptoms and signs.Gelsolin concentration in platelet rich plasma（PRP）,platelet poor plasma（PPP）,filamentous actin（F-actin） and group-specific component globulin （Gc-globulin） of PPP were determined by enzyme-linked immunosorbent assay（ELISA）.The fluorescence intensity of CD62p and cytoplasmic calcium（[Ca^（2＋）]_i） in human platelets of patients and healthy persons was measured with flow cytometry.Results：Compared with the control group,gelsolin in PRP of the BSS group increased significantly（P0.01）,while that in PPP of the BSS and non-BSS groups decreased markedly（P0.05）, the CD62p,[Ca^（2＋）]_i of platelet,F-actin,and Gc-globulin of the BSS and non-BSS groups increased significantly （P0.01）.Compared with the non-BSS group,the gelsolin concentration in PRP of BSS group increased significantly（P0.01）,the[Ca^（2＋）]_i of platelet of the BSS group increased markedly（P0.01）,while the F-actin and Gc-globulin of the BSS group had no statistical defference（P0.05）.Conclusions：Gelsolin concentration in PRP was increased and accompanied by the elevated[Ca^（2＋）]_i of platelet in CHD with BSS,while gelsolin in PPP were lowered markedly.We speculate that plasma gelsolin may clear F-actin from circulation,thus resulting in depletion of plasma gelsolin significantly.This,in addition to the increased calcium influx of platelets,may lead to the gelsolin abnormal expression on platelets during the process of BSS in CHD.Therefore,platelet gelsolin may serve as a new potential biomarker and a therapeutic target of BSS in CHD.
The development of novel and efficient antiplatelet agents that have few adverse effects and methods that improve antiplatelet resistance has long been the focus of international research on the prevention and treatment of cardiovascular and cerebrovascular diseases.Recent advances in platelet proteomics have provided a technology platform for high-quality research of platelet pathophysiology and the development of new antiplatelet drugs.The study of blood stasis syndrome(BSS)and activated blood circulation of traditional Chinese medicine(TCM)is one of the most active fields where the integration of TCM and western medicine in China has been successful.Activated blood circulation herbs(ABC herbs)of Chinese medicine are often used in the treatment of BSS.Most ABC herbs have antiplatelet and anti-atherosclerosis activity,but knowledge about their targets is lacking.Coronary heart disease(CHD),BSS,and platelet activation are closely related.By screening and identifying activated platelet proteins that are differentially expressed in BSS of CHD,platelet proteomics has helped researchers interpret the antiplatelet mechanism of action of ABC herbs and provided many potential biomarkers for BSS that could be used to evaluate the clinical curative effect of new antiplatelet drugs.In this article the progress of platelet proteomics and its advanced application for research of BSS and ABC herbs of Chinese medicine are reviewed.
Gelsolin is an important cytoskeletal protein of platelets and studies have shown a close relationship between gelsolin and cardiovascular disease.However,the role of gelsolin in the development of coronary heart disease(CHD) is unclear.In this study,we record the distribution of gelsolin in human platelets and plasma and its association with different types of CHD.This study included 114 cases,with 33 stable angina pectoris(SAP) cases,81 acute coronary syndrome(ACS) cases—composed of 39 unstable angina pectoris(UAP) and 42 acute myocardial infarction(AMI) cases,and 31 healthy control participants.Gelsolin concentration in platelet rich plasma(PRP) and platelet poor plasma(PPP),actin filament(F-actin) and Gc-globulin of PPP were determined by enzyme-linked immunoadsorbent assay(ELISA).The fluorescence intensity of CD62p and cytoplasmic calcium([Ca2+] i) in human platelets measured by flow cytometry.We also used turbidimetry to detect the platelet aggregation rate(PAR).We analyzed the correlation between platelet gelsolin concentration and CD62p or plasma F-actin levels among each different patient group.Compared with the control group,the gelsolin level in PRP of UAP and AMI groups increased significantly(P<0.01),while the gelsolin level in PPP of all the three patient groups decreased markedly(P<0.01),and the CD62p,PAR,[Ca2+] i of platelets,F-actin and Gc-globulin of the UAP and AMI groups increased significantly(P<0.01).Compared with the SAP group,the gelsolin level in PRP,the PAR,[Ca2+] i of platelets and CD62p of other two groups increased significantly(P<0.01),F-actin of the AMI group increased markedly(P<0.01).Platelet cytoskeleton protein dynamics vary among the different types of CHD.Platelet gelsolin levels are markedly increased and accompanied by increased platelet activity,F-actin and [Ca2+] i of ACS patients,while gelsolin levels in PPP are markedly lower.Abnormally increased platelet gelsolin levels show high positive correlation with the level of platelet activity.Therefore,platelet gelsolin migh
