PMID- 29731189 OWN - NLM STAT- MEDLINE DCOM- 20191001 LR - 20191210 IS - 1876-4738 (Electronic) IS - 0914-5087 (Linking) VI - 72 IP - 5 DP - 2018 Nov TI - Potent effect of prasugrel on acute phase resolution of intra-stent athero-thrombotic burden after percutaneous intervention to acute coronary syndrome. PG - 403-410 LID - S0914-5087(18)30111-4 [pii] LID - 10.1016/j.jjcc.2018.04.004 [doi] AB - BACKGROUND: Recent studies suggested protruding thrombus and atheroma after stent placement could be a substrate for subsequent adverse ischemic events. Although protruded atherothrombotic burden can be assessed as intra-stent tissue (IST) by optical coherence tomography (OCT), the effects of potent antiplatelet therapy on the acute phase resolution of IST in patients with acute coronary syndrome (ACS) was unknown. METHODS: Ninety-six consecutive ACS patients with multi-vessel disease were enrolled in this prospective registry. In combination with aspirin, either clopidogrel or prasugrel was selected according to the date of enrolment. OCT examination was done immediately after percutaneous coronary intervention (post-PCI) and 10 days after index PCI (follow-up acute phase) to calculate averaged IST score as semi-quantitative measures of IST. High residual platelet reactivity (HRPR) was defined as platelet reactivity units (PRU)>/=240 by VerifyNow P2Y12 assay (Accumetrics Inc., San Diego, CA, USA). RESULTS: Thirty two patients (38 stents) were enrolled in the prasugrel group and sixty four patients (72 stents) in the clopidogrel group. Averaged IST scores post-PCI were similar between the two groups (0.68+/-0.41 vs. 0.68+/-0.40, p=0.99), which decreased in all of the prasugrel group and in 87.5% of the clopidogrel group (p=0.02). Consequently, changes in averaged IST score (delta averaged IST score) were significantly greater in the prasugrel group compared to those in the clopidogrel group (-0.411+/-0.288 vs. -0.299+/-0.270, p=0.045). The frequency of HRPR was significantly lower in the prasugrel group (10.0% vs 32.4%, p=0.028). CONCLUSIONS: Prasugrel plus aspirin achieved greater acute phase reduction of IST than clopidogrel plus aspirin, which might underlie the clinical benefit of potent antiplatelet therapy in ACS. (UMIN000018751). CI - Copyright (c) 2018. Published by Elsevier Ltd. FAU - Tsukiyama, Yoshiro AU - Tsukiyama Y AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. FAU - Kozuki, Amane AU - Kozuki A AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Shinke, Toshiro AU - Shinke T AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. Electronic address: shinke@med.kobe-u.ac.jp. FAU - Otake, Hiromasa AU - Otake H AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. FAU - Kijima, Yoichi AU - Kijima Y AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Masano, Tomoya AU - Masano T AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Nagoshi, Ryoji AU - Nagoshi R AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Shibata, Hiroyuki AU - Shibata H AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Takeshige, Ryo AU - Takeshige R AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. FAU - Yanaka, Ken-Ichi AU - Yanaka KI AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. FAU - Shite, Junya AU - Shite J AD - Osaka Saiseikai Nakatsu Hospital, Division of Cardiology, Osaka, Japan. FAU - Hirata, Ken-Ichi AU - Hirata KI AD - Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20180504 PL - Netherlands TA - J Cardiol JT - Journal of cardiology JID - 8804703 RN - 0 (Platelet Aggregation Inhibitors) RN - A74586SNO7 (Clopidogrel) RN - G89JQ59I13 (Prasugrel Hydrochloride) RN - R16CO5Y76E (Aspirin) SB - IM MH - Acute Coronary Syndrome/physiopathology/*surgery MH - Aged MH - Aspirin/therapeutic use MH - Blood Platelets/drug effects MH - Clopidogrel/therapeutic use MH - Drug Therapy, Combination MH - Female MH - Humans MH - Male MH - Middle Aged MH - Percutaneous Coronary Intervention/*adverse effects MH - Plaque, Atherosclerotic/drug therapy/etiology MH - Platelet Aggregation Inhibitors/*therapeutic use MH - Postoperative Complications/*drug therapy/etiology MH - Prasugrel Hydrochloride/*therapeutic use MH - Prospective Studies MH - Registries MH - Stents/adverse effects MH - Thrombosis/*drug therapy/etiology MH - Tomography, Optical Coherence MH - Treatment Outcome OTO - NOTNLM OT - Acute phase OT - Intra-stent tissue OT - Optical coherence tomography OT - Platelet reactivity OT - Prasugrel EDAT- 2018/05/08 06:00 MHDA- 2019/10/02 06:00 CRDT- 2018/05/08 06:00 PHST- 2017/12/20 00:00 [received] PHST- 2018/03/11 00:00 [revised] PHST- 2018/04/02 00:00 [accepted] PHST- 2018/05/08 06:00 [pubmed] PHST- 2019/10/02 06:00 [medline] PHST- 2018/05/08 06:00 [entrez] AID - S0914-5087(18)30111-4 [pii] AID - 10.1016/j.jjcc.2018.04.004 [doi] PST - ppublish SO - J Cardiol. 2018 Nov;72(5):403-410. doi: 10.1016/j.jjcc.2018.04.004. Epub 2018 May 4.