Related Experiment Video
Updated: Sep 5, 2026
Prehospital Thrombolysis: A Manual from Berlin
Published on: November 26, 2013
Effect of Intracoronary Recombinant Human Prourokinase on Myocardial Perfusion and Clinical Outcomes in STEMI
Chonghuai Gu1,2, Xin Hu2, Haihong Liu2
1Department of Cardiovascular, The Second Hospital of Dalian Medical University, 116023 Dalian, Liaoning, China.
Background:
This study aimed to investigate whether intracoronary administration of recombinant human prourokinase (rhPro-UK) improves coronary blood flow, attenuates post-reperfusion inflammatory responses, and enhances clinical outcomes in patients with acute myocardial infarction.
Methods:
In this prospective, single-blind, randomized, controlled clinical trial, 136 ST-segment elevation myocardial infarction (STEMI) patients undergoing emergency percutaneous coronary intervention (PCI) at Anqing Municipal Hospital (August 2021-June 2023) were randomized 1:1:1 to intracoronary rhPro-UK (n = 44), tirofiban (n = 44), or saline groups (n = 48). Perioperative serum levels of creatine kinase-MB (CK-MB), high-sensitivity cardiac troponin T (hs-cTnT), interleukin-6 (IL-6), interleukin-8 (IL-8), tumor necrosis factor-alpha (TNF-α), and soluble suppression of tumorigenicity-2 (sST2) were measured. Serum sST2 was re-evaluated at 1 month (28 ± 7 days) post-PCI. Major adverse cardiovascular events (MACE) were assessed via clinic visits or telephone follow-up at 12 months.
Results:
The cohort had a mean age of 60.6 ± 11.5 years and was predominantly male (89.0%). At 12 months, the rhPro-UK group had the lowest MACE incidence (log-rank p = 0.039). Multivariable Cox regression confirmed reduced MACE risk in the rhPro-UK group (hazard ratio [HR] 0.22, 95% confidence interval [CI]: 0.05-0.99, p = 0.049). The final intra- and postoperative corrected TIMI frame count (cTFC) results demonstrated that both the tirofiban group and the rhPro-UK group exhibited superior efficacy in alleviating the slow/no-reflow phenomenon compared with the saline control group. At 48 hours post-PCI, rhPro-UK significantly reduced CK-MB and hs-cTnT levels compared to saline (p < 0.05). Both rhPro-UK and tirofiban groups exhibited lower IL-6, IL-8, and TNF-α levels at 24, 48, and 72 hours (p < 0.05). At 1-month follow-up, sST2 levels were markedly reduced in the rhPro-UK group (12.9 ± 3.3 pg/mL) versus tirofiban (18.7 ± 4.9 pg/mL) and saline (24.4 ± 15.7 pg/mL) (p = 0.001).
Conclusion:
Intracoronary rhPro-UK administration during emergency PCI in STEMI patients reduces post-reperfusion inflammation and fibrosis, limits infarct size, and improves clinical outcomes.
Trial Registration:
Chinese Clinical Trial Registry (ChiCTR; http://www.chictr.org.cn; Identifier: ChiCTR2100047095).