Please use this identifier to cite or link to this item: http://repository.ipb.ac.id/handle/123456789/105454
Title: Bakteriofag Spesifik Escherichia coli strain 275 Diisolasi dari Sungai Ciliwung di Bogor, Jawa Barat
Other Titles: Escherichia coli strain 275-Specific Bacteriophage Isolated from Ciliwung River in Bogor, West Java.
Authors: Budiarti, Sri
Rusmana, Iman
Nabila
Issue Date: 2021
Publisher: IPB University
Abstract: Infeksi Saluran Kemih (ISK) adalah infeksi yang banyak disebabkan oleh Escherichia coli, salah satunya Escherichia coli strain 275. Bakteri ini diketahui memiliki resistensi terhadap antibiotik, sehingga dalam penanganannya menjadi kurang efektif. Alternatif untuk mengurangi kasus resistensi bakteri ialah terapi bakteriofag. Bakteriofag menginfeksi secara spesifik sel bakteri target dengan memanfaatkan sistem metabolismenya. Sumber bakteriofag ditemukan di habitat sel bakteri inang, diantaranya terdapat di aliran sungai. Tujuan penelitian ini adalah mengisolasi bakteriofag spesifik Escherichia coli strain 275 penyebab ISK dari Sungai Ciliwung di Bogor, Jawa Barat. Isolat fag CK 1 dan CK2 berhasil diisolasi pada titik tengah sungai Ciliwung. Filtrat sampel bakteriofag disiapkan lalu diuji menggunakan metode Double Layer Agar (DLA) dan diindikasikan dengan munculnya plak, selanjutnya dilakukan purifikasi fag. Fag dihitung menggunakan rumus Plaque Forming Units (PFU) pada pengenceran fag 10-4 hingga 10-6 dengan rataan 17,7 x 107 PFU/mL. Uji efektivitas bakteriolitik menggunakan metode spektrofotometer pada kultur Escherichia coli strain 275 dengan fag (kontrol positif) dan tanpa fag (kontrol negatif) yang diamati tiap 1 jam selama 8 jam. Hasil efektivitas fag CK1 dan CK2 menunjukkan efektivitas tinggi pada jam ke-3 dan seterusnya. Efektivitas fag CK1 dan CK2 memiliki tingkat virulensi yang tinggi sesuai dengan jumlah titernya.
Urinary Tract Infection (UTI) is an infection that is mostly caused by Escherichia coli, one of it is Escherichia coli strain 275. An alternative to reduce cases of antibiotics resistant-bacterium is bacteriophage therapy. Bacteriophages infect specific target bacterial cells by utilizing their metabolic system. Sources of bacteriophages are found in the habitat of host bacterial cells, including the river. The aim of this study was to isolate the specific bacteriophage Escherichia coli strain 275 that causes UTI from the Ciliwung River in Bogor, West Java. The CK 1 and CK2 phage isolates were isolated at the midpoint of the Ciliwung river. Bacteriophage sample filtrate was prepared then tested using the Double Layer Agar (DLA) method and indicated by the appearance of plaque, then phage purification was carried out. Phages were calculated with an average of 17.7 x 107 PFU / mL. The bacteriolytic effectiveness test used spectrophotometer method with phage (positive) and without phage (negative) which were observed every 1 hour for 8 hours. The results of the effectiveness of CK1 and CK2 phages showed high effectiveness at the 3rd hour onwards. The effectiveness of CK1 and CK2 phages had a high virulence level according to the number of titers.
URI: http://repository.ipb.ac.id/handle/123456789/105454
Appears in Collections:UT - Biology

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