Platelet-Derived Microparticle Count in β-Thalassemia Patients with Direct Labeling Monoclonal Antibody CD62P and CD41
Abstract
Jumlah Platelet Derived Microparticles pada Pasien Thalassemia β dengan Metode Pelabelan Langsung Antibodi Monoklonal CD62P dan CD41
Kejadian tromboemboli berpotensi komplikasi klinis yang mengancam jiwa ditemukan pada pasien thalassemia β. Patogenesis keadaan hiperkoagulasi pada pasien thalassemia β akibat dari degradasi rantai globin α berlebih dalam sel darah merah yang menghasilkan akumulasi besi labil intraseluler, dan mengarah pada stres oksidatif serta sel darah merah yang lebih kaku dan cacat, dengan akibat kerusakan prematur. Proses ini dikaitkan dengan hilangnya distribusi asimetris normal dari fosfatidilserin membran dan paparannya pada permukaan luar membran sel darah, yang meyebabkan pembentukan kompleks tenase, kompleks protrombinase dan trombin. Peningkatan trombin mengarah pada aktivasi trombosit dan sintesis platelet derived microparticles yang selanjutnya berkontribusi pada pembentukan trombus. Tujuan dari penelitian ini adalah mengetahui peningkatan jumlah platelet derived microparticles dengan metode pelabelan langsung antibodi monoklonal CD62P dan CD41 pada pasien thalassemia β dibanding dengan subjek normal. Penelitian ini merupakan suatu penelitian kuantitatif dengan metode analitik potong lintang yang dilakukan di RSUP Dr. Hasan Sadikin Bandung dan Rumah Sakit Kanker Dharmais Jakarta antara bulan Agustus dan September 2019. Enam puluh pasien, dibagi secara merata menjadi kelompok thalassemia β dan kelompok kontrol, diberi label oleh CD62P dan CD41 antibodi monoklonal. Hasil penelitian menunjukkan kelompok thalassemia β memiliki jumlah trombosit 197x103/uL (58–1.261) dengan jumlah median platelet derived microparticles 10.553 partikel/uL (779–90.971) dibanding dengan 1.861 partikel/uL ( 1,244–3,174) pada kelompok normal (p<0,05). Simpulan, jumlah platelet derived microparticles pada pasien thalassemia β adalah 5,7 kali lebih besar daripada pada subjek normal.
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DOI: https://doi.org/10.15395/mkb.v52n2.1836
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