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Plasma Dipeptidyl-peptidase-4 Activities With No-reflow and Bleeding

Bleeding Clinical Trial

Clinical Trial Summary

Dipeptidyl-peptidase-4 (DPP4) is an important regulator of incretins and inflammation, and participates in the pathophysiological process of acute myocardial infarction (AMI). However clinical data of DPP4a in AMI patients is sparse. This study was to investigate the role of plasma DPP4 activity (DPP4a) in patients with ST-segment elevation myocardial infarction (STEMI) treated with percutaneous coronary intervention (PCI). This was a analysis of consecutive patients conducted at a tertiary referral center from January 2014 to October 2015. The investigators included 747 STEMI-patients, treated with PCI from January 2013 to October 2015. Blood samples were collected immediately at admission. The patients were divided into four groups according to DPP4a quartile.

Clinical Trial Description

ST-segment elevation myocardial infarction (STEMI) is an acute manifestation of coronary heart disease, remaining a frequent cause of death.A better understanding of risk factors and pathogenic mechanisms underlying STEMI may help improve the prognosis and life quality of these patients.Dipeptidyl peptidase 4 (DPP4) is an exopeptidase expressed on the surface of diverse cells, cleaving off amino-terminal dipeptides with either L-proline, L-alanine or serine at the penultimate position. As a cell surface protein, it participates in immune regulation, signal transduction and apoptosis. DPP4 also circulates as a soluble form in the plasma. Soluble DPP4 came from either membrane type clearance or secreted by cells like endothelial cells, with enzymatic activity. Plasma DPP4 activity (DPP4a) are elevated in several diseases, including type 2 diabetes, obesity, atherosclerosis and osteoporosis. Basic studies have showed that DPP4 inhibition leads improved survival and heart function after cardiac ischemia-reperfusion (I/R) injury, and this is partly due to activation of AKT (pAKT), pGSK3 and ANP pathways. Also inhibition of DPP4 can alleviate atherosclerosis and heart failure. Accordingly, one could hypothesize that high DPP4a may worsen myocardial I/R injury, causing poorer cardiovascular outcomes. However, no study has evaluated whether DPP4a is associated with adverse clinical outcomes in STEMI patients. ;

Study Design

Observational Model: Cohort, Time Perspective: Retrospective

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02849691
Study type Observational
Source Chinese PLA General Hospital
Contact
Status Completed
Phase N/A
Start date January 2014
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