cial solution)-In vitro (washed human platelets) In vivo (C57BL/6J mice)0.50Without prolonging bleeding time in mice[97]Akt2 Storage & Stability Delphinidin-3-glucoside (comercial product)Fruit and vegetables: mulberries, grapes, blackberries, and red cabbage.-In vitro (gell-filtered human and murine platelets) In vivo (C57BL/6J mice)0.50Did not significantly affect bleeding time in mice[98]-Int. J. Mol. Sci. 2021, 22,13 ofTable 1. Contpound Natural Sources Tetramethylpyrazine (comercial product) Ligusticum chuanxiong, cacao beans, soybeans. Effects and Proposed Mechanisms Inhibits shear-induced platelet aggregation beneath somewhat higher shear price Inhibited P-selectin surface expression and microparticle release In Vitro or In Vivo Effects Concentration Ranges In Vitro Effects on Bleeding Bleeding was not determined, but no significant influences have been observed under relatively low shear rates ReferenceIn vitro (PRP from humans)0.9.7 mM[99]- Natural sources independent on the study described. Nd.: not determined. ADP: adenosine diphosphate, ADP: adenosine diphosphate, ATP: adenosine triphosphate, cAMP: cyclic adenosine monophosphate, CRP: collagen-related peptide, GP: glycoprotein, HUVEC: human umbilical vein endothelial cells, ITAM: immunoreceptor tyrosine-based activation motif, MAPKs: mMitogen-activated protein kinases, mtDNA: mitochondrial DNA, OH hydroxyl radical, PDI: protein disulfide isomerase, PKA: protein kinase A, PKC: protein kinase C, PLC: phospholipase C, PRP: pPlatelet-rich plasma, ROS: reactive oxygen species, SIPA: shear stress-induced platelet aggregation, TRAP-6: thrombin receptor-activating peptide-6, TXA2: thromboxane A2, VASP: vasodilator-stimulated phosphoprotein, vWF: Von Willebrand factor.Int. J. Mol. Sci. 2021, 22,14 of6. Prospective and Pitfalls in the Therapeutic Use of Antiplatelet Bioactive Compounds Most of the data presented above had been obtained from observational studies using platelet-rich plasma, washed platelets, or blood samples in vitro or making use of mice models [102]. Furthermore, the bioactive compounds were obtained commercially or present in aqueous, hydroalcoholic, or ethanolic extracts from various plant leaves or fruits. Thus, implementations of clinical IL-3 Storage & Stability trials with either the pure compounds or the extracts are essential to the development of novel, organic antithrombotic drugs. A vital problem to become evaluated for the use of the extracts from plants or fruit is definitely the type of solvents utilised to acquire the mixture of bioactive compounds, i.e., methanol, ethanol, and hydroalcoholic mixtures. Additionally, it is relevant to carry out the right and precise determination for each composition and quantities from the compounds to prevent toxicity nor non-desired unwanted effects. The majority of the available clinical trials use foods, mainly from berries, cocoa, or chocolate, and much less regularly extracts from berries and green tea [102]. It can be vital to point out the lack of trials using the type of extracts presented just before as a vital pitfall from the use of those nutraceutical extracts with antiplatelet or antithrombotic potential. Additionally, half with the trials performed within the final 20 years had been completed on healthful volunteers, whilst less than 20 involve individuals with no less than one cardiometabolic risk aspect. In the total quantity of trials with polyphenols within the final 20 years, although 20 analyzed vascular and endothelium responses, there is a lack of trials on platelet function and thrombosis [102]. Ultimately, an extra relevant reality for t