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Dengue Fever (DF) is an infectious disease caused by dengue virus (DENV) infection which is transmitted by Aedes aegypti and Aedes albopictus mosquito bite. There are approximately 50 million DENV cases annually in the world with 500 thousand cases hospitalized. Incidence rate of DENV infection is increasing in Indonesia every year. Specific antiviral that can inhibit or mitigate the progression of the disease have been investigated for many decades. However, until now, management of DENV patients is only supportive. Specific antiviral drug to DENV is not available yet. The objective of this study is to determine antiviral activity of Ceiba pentandra and Eugenia uniflora leaf extract against DENV replication in Huh7it-1 cell line. Study design was an experimental study with a Focus assay and MTT assay to determine the effectivity and toxicity, respectively. Ceiba pentandra leaf extract showed IC50, CC50 and SI of 15.49 µg/ml, 81.1 µg/ml and 5.23. In other hand, E. uniflora revealed IC50, CC50, and SI of 19.83 µg/ml, 134.42 µg/ml and 6.78. We concluded that C. pentandra and E. uniflora leaf extract have potential as antiviral drug to DENV. Further studies are needed to explore the substance of C. pentandra and E. uniflora leaf extract that have antiviral activities to DENV. [ABSTRACT FROM AUTHOR]

Dengue Fever (DF) in Indonesia has been a major health problem for the last 47 years, which keeps on rising until today. Quercitrin as one of the natural compounds, flavonol group and has been used in several types of research for their properties of anti-inflammation, anti-bacterial, anti-viral, and anti-fungi. The aim of this study was to explore the potency of quercitrin as an antiviral drug to dengue virus (DENV) in vitro and in silico. We used Focus assay, MTT assay, and docking analysis to determine IC50, CC50 and binding energy, respectively. The IC50, CC50 and Selectivity Index (SI) of quercitrin was 1.1 µg/ml, 38.8 µg/ml and 38 respectively. In silico study showed the binding energy between quercitrin and NS5 protein was −7,54 kkal/mol. The results obtained that Quercutrin as a good candidate for an antiviral drug to DENV in the future. [ABSTRACT FROM AUTHOR]