Analisis Single Nucleotide Polymorphism (SNP) -217 Gen Human Angiotensinogen (hAGT) pada Penderita Hipertensi di Rumah Sakit Syaiful Anwar secara PCR-Sekuensing

Siti Fatiyatur Rahmah, Nashi Widodo

Abstract


ABSTRAK

Hipertensi masih menjadi masalah kesehatan utama di dunia. Polimorfisme RAS (Renin Angiotensin System) dikatakan sebagai penentu hipertensi dan beberapa kerusakan organ target. Angiotensinogen merupakan protein awal dalam RAS yang memicu timbulnya hipertensi. Diketahui bahwa populasi skala besar ras Amerika dan Afrika yang terkena hipertensi, terjadi polimorfisme pada daerah 5’untranslated region di titik -217 A/G. Variasi basa pada titik -217 guanine atau adenine meningkatkan laju ekspresi gen angiotensinogen. Peningkatan ini terjadi akibat dari interaksi kuat antara faktor transkripsi GR dan C/EBP-β yang berikatan dengan daerah enhanser kemudian mempengaruhi laju transkripsi RNA polimerase III di daerah promoter gen angiotensinogen. Tujuan dari penelitian ini yaitu mengetahui adanya single nucleotide polymorphism (SNP) -217 gen human Angiotensinogen (hAGT) pada penderita hipertensi di Rumah Sakit Syaiful Anwar secara PCR-Sekuensing. Metode yang digunakan yaitu isolasi whole genome (QIAamp DNA Blood Mini Kit) dari 14 sampel darah pasien hipertensi, gen hAGT di amplifikasi dengan Polymerase Chain Reaction (PCR) dan disekuensing untuk mengetahui adanya SNP        -217. Analisis yang dilakukan yaitu menggunakan software AB sequence Scanner, Bioedit dan BLAST NCBI. Hasil analisis menunjukkan bahwa tidak ditemukan adanya SNP -217 gen hAGT pada sampel pasien. Namun terdapat varian -6A pada gen tersebut yang juga mampu memicu terjadinya hipertensi.

Kata Kunci : angiotensinogen, gen hAGT, hipertensi, SNP -217 A/G


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References


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