ArticleBritish journal of pharmacology2012
Antiplatelet and antithrombotic effect of F 16618, a new thrombin proteinase-activated receptor-1 (PAR1) antagonist.
Article in British journal of pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Protease-activated receptors in health and disease.Physiological reviews · 2023Review
- The domino effect triggered by the tethered ligand of the protease activated receptors.Thrombosis research · 2020Review
- Factors Affecting the Formation and Treatment of Thrombosis by Natural and Synthetic Compounds.International journal of molecular sciences · 2020Review
- Interspecies comparison of simultaneous thrombin and plasmin generation.Scientific reports · 2020Article
- Novel Antiplatelet Therapies for Atherothrombotic Diseases.Arteriosclerosis, thrombosis, and vascular biology · 2019Review
- Human endoglin as a potential new partner involved in platelet-endothelium interactions.Cellular and molecular life sciences : CMLS · 2018Article
- Targeting PAR1: Now What?Trends in pharmacological sciences · 2017Review
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposeNew antithrombotic agents with the potential to prevent atherothrombotic complications are being developed to target receptors on platelets and other cells involved in plaque growth. The aim of this study was to investigate the antiplatelet effects of F 16618, a new non-peptidic PAR1 (thrombin receptor) antagonist. EXPERIMENTAL APPROACH: We investigated the inhibitory effect of F 16618 on human platelet aggregation ex vivo, in whole blood and washed platelets, by using a multiple-electrode platelet aggregometer based on impedance and an optical aggregometer, respectively. Its effects on whole-blood haemostasis (clot parameters) were analysed with the ROTEM thromboelastometry device and the platelet function analyser PFA-100. A guinea-pig model of arterial thrombosis was used to investigate its effects on thrombus formation in vivo. KEY
resultsF 16618 inhibited PAR1 agonist peptide (SFLLR-peptide)-induced washed platelet aggregation ex vivo. This effect was concentration-dependent and exhibited a competitive inhibition profile. Washed platelet aggregation, as well as P-selectin expression induced by thrombin, were significantly inhibited by 10 µM F 16618. In whole-blood experiments, 20 µM F 16618 inhibited SFLLR-induced platelet aggregation by 49%. In contrast, it had no effect on whole-blood haemostasis. In the guinea-pig model of carotid thrombosis, 0.32 mg·kg(-1) F 16618 doubled the occlusion time. CONCLUSIONS AND IMPLICATIONS: F 16618 was shown to have strong antithrombotic activity in vivo and moderate antiplatelet effects ex vivo. As these effects were not associated with major effects on physiological haemostasis, this molecule is a good antiplatelet drug candidate for use either alone or in combination with current treatments.
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