Clinical trial NCT02849691: Plasma Dipeptidyl-peptidase-4 Activities With No-reflow and Bleeding
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Dipeptidyl-peptidase-4
STEMI
PCI
No-reflow
Bleeding
Lead sponsor: Chinese PLA General Hospital
Sponsor class: OTHER
First posted: 2016-07-29
Enrollment: 747
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: PLA general hospital (PLAGH) is a large national tertiary-care center in the Beijing, China. The investigators enrolled all patients consecutively hospitalized in PLAGH, with a diagnosis of STEMI and needed PCI.

Brief 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.

Detailed 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.

Eligibility criteria: Inclusion Criteria:

* a diagnosis of STEMI and needed PCI

Exclusion Criteria:

* patients with cancer
* patients who used DPP4 inhibitor
* patients who used GLP1 analogue

Primary outcomes:
measure: a change in the prevalence of no-reflow
timeFrame: immediately after PCI
Secondary outcomes:
measure: in-hospital major adverse cardiac or cerebrovascular events
timeFrame: up to 2 week after PCI (until discharge)
measure: in-hospital complications
timeFrame: up to 2 week after PCI (until discharge)
measure: in-hospital major bleeding
timeFrame: up to 2 week after PCI (until discharge)
Other outcomes:
Locations:
Study officials:
References:
citation: Windecker S, Bax JJ, Myat A, Stone GW, Marber MS. Future treatment strategies in ST-segment elevation myocardial infarction. Lancet. 2013 Aug 17;382(9892):644-57. doi: 10.1016/S0140-6736(13)61452-X.
citation: Zhong J, Rajagopalan S. Dipeptidyl Peptidase-4 Regulation of SDF-1/CXCR4 Axis: Implications for Cardiovascular Disease. Front Immunol. 2015 Sep 25;6:477. doi: 10.3389/fimmu.2015.00477. eCollection 2015.
citation: Zhong J, Maiseyeu A, Davis SN, Rajagopalan S. DPP4 in cardiometabolic disease: recent insights from the laboratory and clinical trials of DPP4 inhibition. Circ Res. 2015 Apr 10;116(8):1491-504. doi: 10.1161/CIRCRESAHA.116.305665.
citation: Connelly KA, Zhang Y, Advani A, Advani SL, Thai K, Yuen DA, Gilbert RE. DPP-4 inhibition attenuates cardiac dysfunction and adverse remodeling following myocardial infarction in rats with experimental diabetes. Cardiovasc Ther. 2013 Oct;31(5):259-67. doi: 10.1111/1755-5922.12005.
citation: Shigeta T, Aoyama M, Bando YK, Monji A, Mitsui T, Takatsu M, Cheng XW, Okumura T, Hirashiki A, Nagata K, Murohara T. Dipeptidyl peptidase-4 modulates left ventricular dysfunction in chronic heart failure via angiogenesis-dependent and -independent actions. Circulation. 2012 Oct 9;126(15):1838-51. doi: 10.1161/CIRCULATIONAHA.112.096479. Epub 2012 Oct 3.