To study the resistance to standard dosage of clopidogrel among Iranian patients following percutaneous coronary intervention measured by platelet aggregation test.Patients undergoing percutaneous coronary intervention in Imam Hussein Medical center, Tehran, Iran, who were under treatment with aspirin, but had no history of clopidogrel usage, entered the study. Patients received standard dosage...

objective: some of the adverse effects of aspirin including peptic ulcers, gastrointestinal bleeding and aspirin resistance compelled researchers to find a suitable alternative with fewer adverse effects. in this clinical trial, we aimed to find the effective antiplatelet dose of garlic. materials and methods: this randomized controlled clinical trial (rct) was conducted on 62 healthy volunteer...

A series of novel 2-aminopyrimidine and 2-Substituted-4,6-diaminopyrimidine derivatives have been synthesized and their anti platelet aggregation activities were assessed against ADP and arachidonic acid- induced platelet aggregation in human plasma using light transmission aggregometry. None of the compounds showed satisfactory activity against the aggregation induced by ADP. However, satisfac...

Ethanol is known to inhibit platelet aggregation. In order to examine effects of ethanol on platelet aggregation, isolated platelet-rich plasma and platelet suspension are often used. However, it remains to be clarified whether and how ethanol affects platelet aggregation in whole blood. In this concise study, we examined effects of ethanol on platelet aggregation induced by different stimulant...

Platelet aggregation is an important in vitro test to assess platelet aggregation response in IHD. The present prospective case control study was undertaken to evaluate the platelet aggregation response in IHD and the effects of aspirin therapy on it. Platelet aggregation was conducted on whole blood by the Chrono- Log whole blood Aggrometer model 540-VS. Various agonists used for platelet aggr...

a series of indole-based aryl(aroyl)hydrazone analogs of antiplatelet indole-3-carboxaldehyde phenylhydrazone were synthesized by the schiff base formation reaction and their antiplatelet activity was assessed using human platelet rich plasma. the platelet concentrate was obtained using a two-step centrifugation protocol and adp, arachidonic acid and collagen were used as inducers of platelet a...

The purpose of this study was to evaluate in vitro the effects of hydrocortisone and aminophylline on adenosine diphosphate (ADP)-induced platelet aggregation in horses. Blood samples from 30 healthy Thoroughbred horses were collected by via jugular venipuncture to assess platelet aggregation. Platelet-rich and platelet-poor plasma were prepared from all samples by centrifugation and divided in...

Previous observations that platelet guanosine 3’. 5’-monophosphate (cyclic GMP) accumulation occurred during platelet aggregation and also in the presence of nitroprusside. which inhibits aggregation. prompted an evaluation of the effects of nitroprusside. nitric oxide. and related agents on human platelet aggregation. Adenosine diphosphate (ADP) was employed to induce irreversible aggregation ...

Objective: Some of the adverse effects of aspirin including peptic ulcers, gastrointestinal bleeding and aspirin resistance compelled researchers to find a suitable alternative with fewer adverse effects. In this clinical trial, we aimed to find the effective antiplatelet dose of garlic. Materials and Methods: This randomized controlled clinical trial (RCT) was conducted on 62 healthy volunteer...

Genetic variation in the platelet endothelial aggregation receptor 1 (PEAR1) gene, most notably rs12041331, is implicated in altered on-aspirin platelet aggregation and increased cardiovascular event risk. We prospectively tested the effects of aspirin administration at commonly prescribed doses (81, 162, and 324 mg/day) on agonist-induced platelet aggregation by rs12041331 genotype in 67 healt...