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      Aktivitas Antidepresan Senyawa Aktif Tanaman Ruku-Ruku (Ocimum sanctum L.) dengan Inhibisi Serotonin Transporter secara In Silico

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      Date
      2022-07-08
      Author
      Annisa, Alifia Mutiara
      Kurniatin, Popi Asri
      Purwanto, Ukhradiya Magharaniq Safira
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      Abstract
      Delesi serotonin menjadi salah satu faktor utama penyebab depresi. Antidepresan berkembang pada target situs penting seperti pompa reuptake yaitu selective serotonin reuptake inhibitors (SSRIs) yang menginhibisi human serotonin transporter (hSERT). SSRI menjadi obat lini utama yang digunakan karena kerjanya selektif pada peningkatan serotonin dan efek yang ringan. Ruku-ruku memiliki metabolit sekunder yang berpotensi antidepresan. Penelitian ini bertujuan mengidentifikasi dan menganalisis interaksi senyawa aktif tanaman ruku-ruku yang dapat menginhibisi hSERT secara in silico. Tahap awal dilakukan skrining 60 ligan uji menggunakan PyRx dan prediksi bioavailabilitas, toksisitas, serta farmakokinetik menggunakan pkCSM dan AdmetSAR 1.0. Penambatan molekuler dilakukan dengan Autodock Vina 1.5.6. Hasil diperoleh 6 ligan yang berpotensi menginhibisi hSERT. Semua ligan tersebut berinteraksi dengan sekurangnya 6 residu penting yang terkonservasi pada tiga subsitus di situs pusat (S1) hSERT. Interaksi polar pada subsitus A, serta interaksi nonpolar pada subsitus B dan C. Ursolic acid memiliki ΔGbind paling negatif yaitu -10,7 kkal/mol dan Ki 0,014 µM, serta dapat menembus sawar-darah otak sehingga dapat bekerja pada target sistem saraf pusat.
       
      Serotonin deficiency is one of the major causes of depression. Antidepressant development at specific sites such as reuptake pumps, namely selective serotonin reuptake inhibitors (SSRIs) that act by inhibiting the human serotonin transporter (hSERT). SSRIs are the main drugs that used because their selective and mild effects on elevated serotonin levels. Ruku-ruku are known contain secondary metabolites that have antidepressant properties. The study was conducted with the purpose of identifying and analyzing the interactions of active compounds in the ruku-ruku plant that might inhibit hSERT. First step was screening of 60 ligands using PyRx and prediction of bioavailability, toxicity, and pharmacokinetics the use of pkCSM and AdmetSAR 1.0. Molecular docking was done with Autodock Vina 1.5.6. The results identified 6 ligands that could inhibit hSERT. All these ligands interact at six important conserved residues at three subsites at the central site (S1) of hSERT. Polar interactions at subsite A, as well as nonpolar interactions at subsites B and C. Ursolic acid has the most negative ΔG which is -10,7 kkal/mol and Ki value of 0,014 µM. This ligan can penetrate the blood-brain barrier so that it can work on the target of the central nervous system.
       
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      http://repository.ipb.ac.id/handle/123456789/112360
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