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Platelet Surface CD62p and Serum Vitamin D Levels are Associated with Clopidogrel Resistance in Chinese Patients with Ischemic Stroke
Background: To explore the association of platelet activation markers, vitamin D, and antiplatelet drugs resistance in ischemic stroke patients. Methods: A total of 230 patients with ischemic stroke were enrolled in this study. Platelet aggregation, platelet activation marker (CD62p), and vitamin D were measured after 7-14 days of dual antiplatelet treatment (aspirin  + clopidogrel). All individuals were divided into a drug resistance group and a drug sensitive group according to the platelet maximum aggregation rate induced by antagonist adenosine diphosphate or arachidonic acid.
Source: Journal of Stroke and Cerebrovascular Diseases - February 20, 2019 Category: Neurology Authors: Bi-Chao Lu, Xiao-Jie Shi, Lin Liang, Na Dong, Zhi-Zhong Liu Source Type: research

Relationship between CYP2C19*2, *3 gene polymorphism and the recurrence in ischemic stroke patients treated with clopidogrel in China: A meta-analysis
The relationship between CYP2C19 *2,*3 gene variants and the recurrence in ischemic stroke patients treated with clopidogrel is still controversial according to the available published literature. To evaluate correlations between  CYP2C19 *2,*3 gene variants, metabolic typing according to *2, *3 SNPs (the polymorphism of rs4244285, rs4986893) and stroke recurrence, we performed this study through meta-analysis.
Source: Journal of Stroke and Cerebrovascular Diseases - October 7, 2022 Category: Neurology Authors: Yu Yan, Ruixiao Hao, Xiuyuan Zhao, Xiaoshuang Xia, Lin Wang, Xin Li Source Type: research

Platelet Count Predicts Adverse Clinical Outcomes After Ischemic Stroke or TIA: Subgroup Analysis of CNSR II
Conclusion: In ischemic stroke or TIA patients with platelet count within normal range, platelet count may be a qualified predictor for long-term recurrent stroke, mortality, and poor functional outcome. Introduction Platelets exert a critical role in the pathogenesis of atherosclerotic complications of cardio-cerebrovascular disease, contributing to thrombus formation, and embolism (1, 2). Previous literature reported that platelets of various size and density are produced by megakaryocytes of different size and stages of maturation in different clinical conditions, suggesting various platelet patterns in differen...
Source: Frontiers in Neurology - April 11, 2019 Category: Neurology Source Type: research

Evaluation and subgroup analysis of the efficacy and safety of intensive rosuvastatin therapy combined with dual antiplatelet therapy in patients with acute ischemic stroke
ConclusionsWithout increasing bleeding and statin-associated adverse events, intensive rosuvastatin therapy plus 7-day DAPT significantly reduced the risk of recurrent stroke, especially for subgroups with high-risk factors.Clinical trial registration. China Clinical Trial Registration Center (ChiCTR1800017809).
Source: European Journal of Clinical Pharmacology - December 29, 2022 Category: Drugs & Pharmacology Source Type: research

CYP2C19 Loss-of-Function Variants Associated with Long-term Ischemic Stroke Events During Clopidogrel Treatment in the Chinese Population
This study aims to determine whether CYP2C19 loss-of-function (LoF) variants were associated with long-term ischemic stroke risk in Chinese primary care patients treated with clopidogrel. Patients treated with clopidogrel were ascertained from a Chinese Electronic Medical Record linked with biobank for a retrospective cohort study. Their medical information was examined for the period from January 2018 to December 2021. Two CYP2C19 major loss of function variants (*2:rs4244285, *3: rs4986893) were genotyped. The clinical outcome was ischemic stroke event. Cox regression analysis was used to evaluate the association between...
Source: Clinical Pharmacology and Therapeutics - August 22, 2023 Category: Drugs & Pharmacology Authors: Peng Wu Ziqing Liu Zijian Tian Benrui Wu Jian Shao Qian Li Zhaoxu Geng Ying Pan Ke Lu Qiang Wang Tao Xu Kaixin Zhou Source Type: research

Association between insulin resistance and aspirin or clopidogrel resistance in Chinese patients with recent ischemic stroke/TIA.
Conclusions: Insulin resistance was an independent predictor for development of antiplatelet drug resistance in patients with recent minor ischemic stroke or TIA. More attention should be paid to recognize these patients and antithrombotic effect should be monitored when antiplatelet drugs were applied to these patients. PMID: 33455562 [PubMed - as supplied by publisher]
Source: Neurological Research - January 21, 2021 Category: Neurology Tags: Neurol Res Source Type: research

Cost Effectiveness of Genotype-Guided Antiplatelet Therapy in Asian Ischemic Stroke Patients: Ticagrelor as an Alternative to Clopidogrel in Patients with CYP2C19 Loss of Function Mutations
ConclusionThis study suggests that it is cost effective to screen for LOF mutations in the CYP2C19 gene in ischemic stroke populations, with ticagrelor as a substitute for clopidogrel in those with LOF mutations.
Source: Clinical Drug Investigation - September 20, 2020 Category: Drugs & Pharmacology Source Type: research

Association of clopidogrel high on-treatment reactivity with clinical outcomes and gene polymorphism in acute ischemic stroke patients: An observational study
High on-treatment platelet reactivity (HTPR) was suggested to be better correlated with recurrent ischemic events as compared with gene polymorphism, whereas most of the results were from white populations with acute coronary disease. The evidence is relatively limited regarding HTPR and its genetic determinants in predicting clinical outcomes of stroke among Chinese-Han patients. A prospective study including 131 Chinese-Han stroke patients treated with clopidogrel was analyzed. Platelet function was assessed by light transmission aggregometry (LTA)- adenosine diphosphate (ADP) method. HTPR was defined as 5 μM ADP ind...
Source: Medicine - April 1, 2020 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Treatment of progressive ischemic stroke with low ‑dose eptifibatide: A retrospective case‑control study
Exp Ther Med. 2022 Nov 22;25(1):22. doi: 10.3892/etm.2022.11721. eCollection 2023 Jan.ABSTRACTProgressive ischemic stroke (PIS) is a therapeutic challenge in clinical practice. The present retrospective study aimed to investigate the safety and effectiveness of eptifibatide in the treatment of PIS. The present study enrolled patients with PIS admitted to Xiangtan Central Hospital (Xiangtan, China) between March 2020 and March 2021 with National Institutes of Health Stroke Scale (NIHSS) progression scores of ≥2 points during the initial 72 h. Patients were then divided into two groups according to their different anti-pla...
Source: Experimental and Therapeutic Medicine - December 23, 2022 Category: General Medicine Authors: Long Luo Jinsheng Lin Ye Deng Zhigang Li Ying Yuan Wen Zhang Source Type: research

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