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All Journal HAYATI Journal of Biosciences Majalah Farmasi dan Farmakologi (Trends in Pharmacy and Pharmaceutical Sciences)
Rangga Meidianto Asri
Universitas Hasanuddin
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Medicine & Pharmacology

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Protective Effect of Green Algae Ulva reticulata Against Pseudomonas aeruginosa in Drosophila Infection Model Firzan Nainu; Rangga Meidianto Asri; M. Natsir Djide; Muhammad Ahsan; Rudi Arfiansyah; Sartini Sartini; Gemini Alam
HAYATI Journal of Biosciences Vol. 26 No. 4 (2019): October 2019
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (491.119 KB) | DOI: 10.4308/hjb.26.4.163

Abstract

The emergence of antibiotic-resistant Pseudomonas aeruginosa is one of main health issues in global communities. To overcome such threat, the discovery of novel antibacterial agents is indispensable. This study aimed to evaluate the in vivo antipseudomonal activity of Ulva reticulata extract in Drosophila model of infection. Ethanolic extract of Ulva reticulata was prepared using maceration method and the extract was subsequently assessed for its in vivo antibacterial effect against P. aeruginosa using survival assay, bacterial load enumeration, and gene expression analysis in the wildtype Drosophila. Survival and bacterial load analysis were further performed in a similar fashion on the mutant flies devoid of component responsible in the activation of immune responses against P. aeruginosa. Decline in the survival of infected host accompanied by augmentation of bacterial proliferation was documented in the wildtype Drosophila upon infection with P. aeruginosa. These phenotypic events were further amplified in immune-deficient mutant Drosophila. Nevertheless, improvement of host survivorship and reduction of bacterial burden were demonstrated in both wildtype or immune-deficient mutant flies upon treatment with Ulva reticulata extract after bacterial challenge. Our data demonstrated in vivo antipseudomonal activity of Ulva reticulata extract and thus provide a valuable information about its future potential for health promotion.
SKRINING POTENSI PROBIOTIK DAN SITOTOKSIK BAKTERI Weisella confusa ISOLAT DANGKE SAPI Nana Juniarti Natsir Djide; Rangga Meidianto Asri
Majalah Farmasi dan Farmakologi Vol. 23 No. 2 (2019): MFF
Publisher : Faculty of Pharmacy, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.562 KB) | DOI: 10.20956/mff.v23i2.6953

Abstract

Kasus kanker kolorektal mengalami peningkatan setiap tahunnya di seluruh dunia. Salah satu upaya pencegahan kanker kolorektal ialah melalui konsumsi probiotik. Weisella confusa tergolong dalam kelompok bakteri asam laktat, isolasi bakteri ini dangke merupakan hal yang baru dan aktivitas probiotik dari isolat ini belum diketahui. Penelitian ini bertujuan menguji sifat probiotik W. confusa isolat dangke dan potensi sitotoksiknya terhadap larva udang Artemia salina sebagai skrining awal efek antikanker. Metode pengujian sifat probiotik meliputi uji toleransi terhadap pH rendah dan uji toleransi terhadap garam empedu. Skrining efek sitotoksik dilakukan menggunakan metode BSLT(Brine Shrimp Lethality Test) menggunakan hasil fermentasi 72 jam dari isolat. Berdasarkan hasil pengujian, W. confusa isolat dangke menunjukkan sifat toleran terhadap pH 2 dan garam empedu 0,3%. Hasil uji sitotoksikmenunjukkan bahwa filtrat hasil fermentasi memiliki nilai LC50 lebih dari 1000 µg/ml yang menandakan sampel tidak berefek sitotoksik.Disimpulkan bahwabakteri W.confusa isolat dangke menunjukkan potensi sebagai probiotik namun tidak bersifat sitotoksik sehingga tidak berpotensi untuk dilanjutkan pada uji antiproliferasi terhadap sel kanker. Pengujian aktivitas biologis lainnya disarankan untuk mengetahui potensi lain dari bakteri ini.
Co-Authors Djide, Nana Juniarti Natsir Firzan Nainu Gemini Alam M. Natsir Djide Muhammad Ahsan Rudi Arfiansyah Sartini Sartini