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"Artemisinin merupakan obat antimalaria yang paling efektif saat ini. Namun, artemisinin memiliki kelemahan utama yang menghambat efikasinya yaitu sifatnya yang kurang larut dalam air. Kelarutan artemisinin yang rendah dalam air dapat menyebabkan laju disolusi dan bioavailabilitas yang rendah. Tujuan dari penelitian ini adalah untuk membuat formulasi zat aktif antimalaria artemisinin dalam Self Emulsifying Drug Delivery System untuk meningkatkan laju disolusi obat dan untuk mengetahui efek penambahan polimer polivinil pirolidon sebagai inhibitor pengendapan. Formulasi Self Emulsifying Drug Delivery System diuji kestabilan emulsi secara visual, ukuran partikel, zeta potensial, dan disolusi in vitro. Uji kestabilan emulsi menunjukkan penambahan kosentrasi surfaktan mampu meningkatkan kestabilan. Spektrum Fourier Transform Infrared Spectroscopy menunjukkan interaksi yang terdapat pada formulasi hanya berupa interaksi fisik tanpa adanya perubahan gugus fungsi. Formulasi SEDDS dapat membentuk emulsi dalam medium lambung atau usus dengan ukuran partikel 121 nm - 492 nm dengan nilai indeks polidispersitas 0,36 - 0,59. Zeta potensial formulasi Self Emulsifying Drug Delivery System sebesar -30 mV. Penambahan polivinil pirolidon dapat menghambat terjadinya pengendapan dan meningkatkan pelepasan obat artemisinin dari semula 30% pada medium HCl dan 28 % pada medium buffer fosfat pH 6,8 menjadi sebesar 77% pada medium HCl 0,1 N dan 95% pada medium buffer fosfat pH 6,8 selama 6 jam.......Artemisinin is the most effective antimalarial drug today. However, artemisinin has low solubility in water that reduces its efficacy. The low solubility of artemisinin in water causes a low dissolution rate and bioavailability. The purpose of this study is to prepare a Self Emulsifying Drug Delivery System for artemisinin to increase the rate of drug dissolution and to determine the effect of polyvinyl pyrrolidone polymer as a precipitation inhibitor. The Self Emulsifying Drug Delivery System was prepared by mixing artemisinin in various compositions of polysorbate 20 or polysorbate 80, polyethylene glycol 400, and oleic acid. The formulations were tested for emulsion stability, particle size, zeta potential, and in vitro dissolution. The emulsion stability test showed that the addition of surfactant concentration increased the stability of the emulsion. The Fourier Transform Infrared Spectroscopy spectrum showed that the molecular interactions observed were only physical interactions without any changes in functional groups. The Self Emulsifying Drug Delivery System could make emulsion in the stomach or intestine medium with a droplet size of 121 nm - 492 nm and polydispersity index value of 0.36 - 0.59. The zeta potential of the Self Emulsifying Drug Delivery System formulation is -30 mV. The addition of polyvinyl pyrrolidone inhibited precipitation and increased the release of artemisinin drugs from 30% in HCl medium and 28% phosphate buffer medium to 77% in HCl medium and 95% in phosphate buffer medium for 6 hours."

"[Munculnya fenomena resistensi dari berbagai obat malaria yang telah digunakan untuk melawan penyakit malaria merupakan suatu ancaman bagi dunia kesehatan untuk mencari terobosan baru dalam melawan penyakit malaria. Salah satunya dengan strategi pengobatan secara kombinasi. ACT (Artemisinin Combination Therapy) obat standar sebagai antimalaria. Ekstrak tanaman Akar Pasak Bumi (Eurycoma longifolia) diketahui memiliki potensi antimalaria. Dalam penelitian ini bertujuan menguji kombinasi ekstrak Akar Pasak Bumi (PB) dan ACT. Dengan menguji 2 dosis terdiri dari PB 60mg/kgBB tambah ACT 1.7 mg/kgBB; PB 75 mg/kgBB tambah ACT 1.7 mg/kgBB. Desain penelitian ini menggunakan eksperimental in vivo pada mencit (Mus musculus) yang terinfeksi Plasmodium berghei. Berdasarkan hasil analisa peningkatan parasitemia hari ke-4 menggunakan SPSS menunjukkan hasil tidak bermakna (p>0.05) pada kedua kelompok uji ketika dibandingkan dengan kontrol positif (ACT). Hal ini ditunjang dengan presentase inhibisi kedua kelompok (68.4%;54.46%) lebih kecil daripada kontrol positif (70%). Dapat disimpulkan bahwa kedua dosis kombinasi tidak bersifat sebagai antimalaria. Kombinasi dosis ekstrak akar pasak bumi 60 mg/kgBB dan ACT 1.7 mg/kgBB merupakan kelompok yang memiliki presentase daya hambat yang paling baik berdasarkan presentase daya hambat pada hari ke-4.;The emergence of the phenomenon of resistance from the malaria drug that has been used to combat malaria is a threat to the health of the world to search for new breakthroughs in the fight against malaria. One way by using combination treatment strategies. ACT (Artemisinin Combination Therapy) is a standard drug as anti-malaria. The extract of Pasak Bumi root (Eurycoma longifolia) had been known to have anti-malaria potency. This study aimed to test a combination of the extract of Pasak bumi root and ACT. By testing two doses consisting of PB 60 mg/kgBB and ACT 1.7 mg/kgBB; PB 75 mg/kgBB and ACT 1.7 mg/kgBB. Design of this study using an experimental in vivo in a mice (Mus musculus) infected by Plasmodium berghei. Based on the analysis of the increase in parasitemia day 4 using SPSS shows the results are not significant in both groups combination compared with positive control (ACT). It is supported with a percentage of inhibition of the two groups (68.4%;54.46%) is smaller than the positive control(70%). It can be concluded that both of doses combination is not as anti-malaria. Doses combination of PB 60 mg/kgBB and ACT 1.7 mg/kgBB has the best percentage of inhibition parasitemia, The emergence of the phenomenon of resistance from the malaria drug that has been used to combat malaria is a threat to the health of the world to search for new breakthroughs in the fight against malaria. One way by using combination treatment strategies. ACT (Artemisinin Combination Therapy) is a standard drug as anti-malaria. The extract of Pasak Bumi root (Eurycoma longifolia) had been known to have anti-malaria potency. This study aimed to test a combination of the extract of Pasak bumi root and ACT. By testing two doses consisting of PB 60 mg/kgBB and ACT 1.7 mg/kgBB; PB 75 mg/kgBB and ACT 1.7 mg/kgBB. Design of this study using an experimental in vivo in a mice (Mus musculus) infected by Plasmodium berghei. Based on the analysis of the increase in parasitemia day 4 using SPSS shows the results are not significant in both groups combination compared with positive control (ACT). It is supported with a percentage of inhibition of the two groups (68.4%;54.46%) is smaller than the positive control(70%). It can be concluded that both of doses combination is not as anti-malaria. Doses combination of PB 60 mg/kgBB and ACT 1.7 mg/kgBB has the best percentage of inhibition parasitemia]"