



- Công bố khoa học và công nghệ Việt Nam
Công nghệ sinh học liên quan đến y học, y tế
Vũ Thị Thơm(1), Vũ Phương Thảo, Vũ Ngọc Trung, Nguyễn Thị Thúy Mậu
Mối liên quan giữa độ ngưng tập tiểu cầu với kiểu gen CYP2C19*2, CYP2C19*3 và một số yếu tố khác trên 54 bệnh nhân đau thắt ngực không ổn định tại Viện Tim mạch Việt Nam
The relationship between platelet aggregation and CYP2C19*2, CYP2C19*3 genotypes with other factors in patients with unstable angina
TC Khoa học Y dược – Đại học Quốc gia Hà Nội
2018
01
74-81
2615-9309
Đa hình di truyền (ĐHDT) gen CYP2C19 liên quan đến chuyển hóa thuốc clopidogrel thông qua đo độ ngưng tập tiểu cầu (NTTC) ở bệnh nhân đau thắt ngực không ổn định. Nghiên cứu nhằm xác định tần số phân bố đa hình gen CYP2C19 và ảnh hưởng của chúng cùng một số yếu tố khác lên độ NTTC. Nghiên cứu tiến hành trên 54 bệnh nhân theo phương pháp mô tả cắt ngang. Kết quả tần số kiểu gen CYP2C19*1/*1, *1/*2, *1/*3, *2/*2 và *2/*3 lần lượt là 44,4%, 33,3%, 7,4%, 11,1% và 3,8%. Tỷ lệ tác dụng gen chuyển hóa thuốc bình thường, giảm và kém lần lượt là 44,4%, 40,7% và 14,9%. ĐHDT gen CYP2C19 có ảnh hưởng lên độ NTTC. Với alen CYP2C19*2, độ NTTC của kiểu gen GA cao hơn kiểu gen GG (p=0,016). Độ NTTC có sự khác biệt giữa nhóm tác dụng chuyển hóa bình thường và (giảm+kém) (p=0,027). Trong nghiên cứu này, tần số alen CYP2C19*2 khá cao trong khi tần số alen CYP2C19*3 tương đối thấp. Hơn nữa, alen *2 có tác động rõ rệt đến độ NTTC. Tuy nhiên, nghiên cứu chưa thấy sự ảnh hưởng của yếu tố phi di truyền lên độ NTTC.
The genetic polymorphism of CYP2C19 is associated with clopidogrel metabolism through the measurement of platelet aggregation in patients with unstable angina. This study was aimed to determine the frequency of CYP2C19 polymorphism and the effect of CYP2C19 genotype as well as other factors on platelet aggregation. The study was conducted on 54 patients by the crosssectional method. The genotypes proportion of CYP2C19*1/*1, *1/*2, *1/*3, *2/*2 and *2/*3 were 44.4%, 33.3%, 7.4%, 11.1% and 3.8%, respectively. The results with CYP2C19 phenotype were 44.4% of extensive metabolizers (EM), 40.7% of intermediate metabolizers (IM) and 14.9% of poor metabolizers (PM). For CYP2C19*2, heterozygous genotype (GA) had higher platelet aggregation than homozygous genotype (GG) with significant difference (p=0.016). Platelet aggregation showed a significant difference between EM and (IM+PM) (p=0.027). The study results show that the prevalence of CYP2C19*2 allele was quite high while the rate of CYP2C19*3 allele was relatively low. Moreover, CYP2C19*2 had a clear effect on platelet aggregation.
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