Efektivitas Kombinasi Vankomisin dan Vitamin C terhadap Pertumbuhan MRSA (Methicillin Resistant Staphylococcus aureus) (Effectiveness of Vancomycin and Vitamin C Combination on MRSA (Methicillin Resistant Staphylococcus aureus) Growth)

Ulin Nuha Jazmin (Program Studi Pendidikan Dokter Fakultas Kedokteran Universitas Jember)
Dini Agustina (Departemen Mikrobiologi Fakultas Kedokteran Universitas Jember)
Rony Prasetyo (Departemen Ilmu Kesehatan Masyarakat Fakultas Kedokteran Universitas Jember)

e-Journal Pustaka Kesehatan
Vol 6 No 1 (2018)

Nephrotoxicity due to prolonged use of vancomycin becomes a big issue in patients with MRSA infections and the use of vitamin C has been proved to decrease this side effect. Vitamin C with its combination with antibiotic will halt MRSA growth by forming Reactive Oxygen Species (ROS). This study aimed to determine the effect of vancomycin and vitamin C combination in order to halt the MRSA growth and the minimum concentration of vitamin C which can decrease the Minimum Inhibitory Concentration (MIC) of vancomycin. This study used a quasi experimental design with 7 groups, 1 as negative control which only given vancomycin and 6 other groups which given vancomycin and vitamin C with following concentration 0,4; 0,8; 1,6; 3,2; 6,4; and 12,8 mg/mL. We used microdilution method with 4 repetitions to measure the MIC value. This study revealed that there were no difference between control and other groups, the MIC of vancomycin is 1 µg/mL. Combination effect was measured by Fractional Inhibitory Concentration Index (FICI) calculation which showed indifferent effect to all groups. This study concluded that combination of vancomycin and vitamin C effect has no difference with control group and by adding vitamin C until 12,8 mg/mL did not decrease MRSA growth. Keywords: MRSA, vancomycin, vitamin C, Minimum Inhibitory Concentration (MIC)