PMID- 28837213 OWN - NLM STAT- MEDLINE DCOM- 20180611 LR - 20181202 IS - 2567-689X (Electronic) IS - 0340-6245 (Linking) VI - 117 IP - 10 DP - 2017 Oct 5 TI - Antithrombotic potency of ticagrelor versus clopidogrel in type-2 diabetic patients with cardiovascular disease. PG - 1981-1988 LID - 10.1160/TH17-04-0277 [doi] AB - Type-2 Diabetes Mellitus [T2DM] is associated with increased platelet reactivity and hypo-response to antiplatelet drugs. Ticagrelor, with its faster and more potent antiplatelet effects, was shown to reduce adverse events more than clopidogrel in the overall CAD patient population of PLATO trial, but the benefits did not reach statistical significance in the T2DM subgroup. To better understand these findings, we compared the antithrombotic effects of ticagrelor versus with clopidogrel in T2DM patients with cardiovascular disease. In a randomized, 2 treatment-sequence, crossover-design, T2DM patients (n=20, 57+/-8 years, 60 % male) received a loading-dose [LD] plus one week of daily-therapy [DT] of clopidogrel or ticagrelor. Treatment effects were assessed by measuring thrombus formation (Badimon Chamber) and platelet aggregation (Multiple Electrode Aggregometry (MEA) Analyzer and VerifyNow(R)) at 2- and 6-hour post-LD and on Day-7 of DT, in comparison with pre-treatment baseline. After 2 weeks of washout, patients switched to the second treatment under identical testing conditions. Ticagrelor significantly reduced thrombus formation versus baseline at 2- and 6-hour post-LD and Day-7 of DT (33 %, 40 % and 31 %, respectively, p<0.01 for all) whereas thrombus reductions with clopidogrel were much lower and significant only at 6-hour post-LD (16 %, 20 % and 17 %, respectively). Antithrombotic effect of ticagrelor at 6-hour was significantly stronger than clopidogrel (p<0.05). Platelet aggregation (MEA and VerifyNow(R)) was inhibited by both treatments but effects of ticagrelor were significantly stronger at each time-point. Ticagrelor exhibits a faster and more potent antithrombotic effect than clopidogrel in T2DM patients with cardiovascular disease, supporting its use in this population. FAU - Zafar, M Urooj AU - Zafar MU FAU - Baber, Usman AU - Baber U FAU - Smith, Donald A AU - Smith DA FAU - Sartori, Samantha AU - Sartori S FAU - Contreras, Johanna AU - Contreras J FAU - Rey-Mendoza, Juan AU - Rey-Mendoza J FAU - Linares-Koloffon, Carlos A AU - Linares-Koloffon CA FAU - Escolar, Gines AU - Escolar G FAU - Mehran, Roxana AU - Mehran R FAU - Fuster, Valentin AU - Fuster V FAU - Badimon, Juan J AU - Badimon JJ LA - eng SI - ClinicalTrials.gov/NCT01823510 GR - UL1 TR000067/TR/NCATS NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial DEP - 20170824 PL - Germany TA - Thromb Haemost JT - Thrombosis and haemostasis JID - 7608063 RN - 0 (Fibrinolytic Agents) RN - 0 (Platelet Aggregation Inhibitors) RN - A74586SNO7 (Clopidogrel) RN - GLH0314RVC (Ticagrelor) RN - K72T3FS567 (Adenosine) RN - OM90ZUW7M1 (Ticlopidine) SB - IM MH - Adenosine/administration & dosage/adverse effects/*analogs & derivatives MH - Aged MH - Blood Platelets/*drug effects/metabolism MH - Cardiovascular Diseases/blood/complications/diagnosis/*drug therapy MH - Clopidogrel MH - Coronary Thrombosis/blood/diagnosis/etiology/*prevention & control MH - Cross-Over Studies MH - Diabetes Mellitus, Type 2/blood/*complications/diagnosis MH - Female MH - Fibrinolytic Agents/*administration & dosage/adverse effects MH - Humans MH - Male MH - Middle Aged MH - Platelet Aggregation Inhibitors/*administration & dosage/adverse effects MH - Platelet Function Tests MH - Ticagrelor MH - Ticlopidine/administration & dosage/adverse effects/*analogs & derivatives MH - Time Factors MH - Treatment Outcome OTO - NOTNLM OT - Antiplatelet agents OT - clopidogrel OT - diabetes mellitus OT - thrombosis OT - ticagrelor EDAT- 2017/08/25 06:00 MHDA- 2018/06/12 06:00 CRDT- 2017/08/25 06:00 PHST- 2017/04/21 00:00 [received] PHST- 2017/06/26 00:00 [accepted] PHST- 2017/08/25 06:00 [pubmed] PHST- 2018/06/12 06:00 [medline] PHST- 2017/08/25 06:00 [entrez] AID - 17-04-0277 [pii] AID - 10.1160/TH17-04-0277 [doi] PST - ppublish SO - Thromb Haemost. 2017 Oct 5;117(10):1981-1988. doi: 10.1160/TH17-04-0277. Epub 2017 Aug 24.