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Previous studies showed that Leunca herb ethanolic extract (LHE) has cytotoxic activity in several cancer cell lines such as HepG2 and HT-29. The extract also demonstrated as potential agent to be developed as co-chemotherapeutic in combination with doxorubicin and cisplatin. The combination is supposed to reduce occurance of cell resistance and toxicity towards normal cell. In order to verify safety before being applied to human, toxicological and genotoxic evaluation of the extract is important to be done. This research was therefore aimed to investigate acute toxicity and genotoxic activity of LHE. The acute toxicity study was carried out in three groups of 5 mice that was orally administrated by LHE at different doses consisting 300, 2000 and 5000 mg/kgBW. Mortality and sign of toxicity were observed during 7 days. Genotoxic activity was carried out using Mononuclear Polychromatic Erythrosite (MNPCE) assay at a doses range of 250, 500, and 1000 mg/kgBW. Cyclophosphamide (CYP) at the dose of 50 mg/kg was used as positive control. The result showed that LHE did not cause lethal effect on animal model up to doses of 5000 mg/kgBW. However, toxicity signs were found in animal model on day 0-6 of the observation. LHE had lower genotoxic activity compared to cyclophosphamide at the doses of 250, 500, and 1000 mg/kg. The low genotoxic activity and acute toxicity of LHE suggested that the extract might be safe to be used as medicine.

Sunlight contains UV radiation which will have an impact on the skin if exposed continuously and cause premature aging of the skin. The use of cosmetic products that contain antioxidant compounds is needed to avoid premature aging due to exposure to UV rays. Antioxidants used in cosmetics generally come from synthetic compounds, namely BHT (Butyl hydroxytoluene) whose use will have a negative impact on the skin if used in the long term, so in this study, Moringa oleifera leaf was used as a natural antioxidant. The purpose of this study is to determine the antioxidant activity of Moringa leaf water extract by calculating IC50 and using a comparison standard of vitamin C. The method used in this study is the stratified maceration method with measurement of antioxidant activity using the DPPH method. The results showed that the aqueous extract of Moringa leaves contains secondary metabolites of flavonoids, tannins, saponins, and alkaloids that play a role in antioxidant activity. The test results of Moringa leaf water extract showed moderate antioxidant activity with an IC50 value of 87.54 ppm, while the comparison control vitamin C obtained an IC50 of 483.53 ppm. This is because vitamin C has been oxidized so that the ability to donate protons to DPPH free radicals is also reduced.

Ekstrak kulit apel hijau (Pyrus malus L.) mengandung senyawa Quercetin yang mampu menurunkan ekspresi Bcl-2. Penelitian ini bertujuan untuk mengetahui aktivitas sitotoksik dan induksi apoptosis ekstrak etanol kulit apel hijau (EEKAH) pada model sel kanker payudara MCF-7. Serbuk kulit apel hijau diekstraksi menggunakan pelarut etanol 70% dengan metode ultrasonik. Uji sitotoksik terhadap sel kanker payudara MCF-7 dengan metode MTT Assay pada konsentrasi EEKAH yaitu 31,25; 62,5; 125; 250; 500 dan 1000 µg/mL. Hasil uji sitotoksik dihitung nilai IC50menggunakan regresi linier. Pengamatan induksi apoptosis dengan konsentrasi ½ IC50(442,5 μg/ml) dan IC50 (885 μg/ml) menggunakan flowcytometry. Analisis data dianalisis menggunakan analisis statistik One Way Anova. Hasil penelitian menunjukan bahwa EEKAH memiliki aktivitas sitotoksik dengan nilai IC50 sebesar 885 µg/ml. Persentase rata-rata fase apoptosis total EEKAH pada konsentrasi ½ IC50sebesar 30,2% (p>0,05) dan IC50 sebesar 47,9% (p<0,05) dibandingkan kontrol sel sebesar 12,7%. EEKAH mampu menginduksi apoptosis terhadap sel MCF-7. Kata kunci: MCF-7, Pyrus malus L., Sitotoksisitas, Apoptosis  Green apple peel extract (Pyrus malus L.) contains Quercetin compound which decrease Bcl-2 expression. The aims of this study was to determined the cytotoxic activity and apoptosis induction of green apple peel ethanol extract (GASEE) on MCF-7 breast cancer cells. The green apple peel powder was extracted using 70% ethanol solvent by ultrasonic method. Cytotoxic test against MCF-7 breast cancer cells using the MTT Assay method at the GASEE concentration, namely 31.25; 62.5; 125; 250; 500 and 1000 µg/mL. The results of the cytotoxic test calculated the IC50 value using linear regression. Determination of apoptosis induction with a concentration of ½ IC50 (442.5 µg/mL) and IC50 (885 µg/mL) using flowcytometry. Data analysis was analyzed using statistical analysis One Way Anova. The results showed that GASEE has cytotoxic activity with an IC50 value of 885 µg/ml. Average percentage of total apoptosis phase are ½ IC50 concentration of 30.2% (p>0.05) and IC50 of 47.9% (p<0.05) than cell control of 12.6%. GASEE can apoptosis induced against MCF-7 cells.

One of the efforts to cure breast cancer is a combination of the chemotherapeutic agent with medicinal plants. This study was conducted to examine the activity of the combination between doxorubicin, curcuma rhizome (Curcuma xanthorriza Roxb.) ethanolic extract (CEE), and awar-awar leaves (Ficus septica Burm.f.) ethanolic extract (AAE) in inducing apoptosis and modulating the cell cycle progression in breast cancer T47D cells. The combination activity was performed using three series of concentration, 1/3; 1/6 and 1/12 of IC50, The combination index (CI) of doxorubicin, CEE and AEE was determined under MTT assay. The result showed that the combination of 10 µM, 5 µg/ml, 1 µg/ml concentrations of  doxorubicin, CEE and AEE respectively result in synergistic effect with CI values less than 1. The treatment exhibited the cell accumulation in S phase (27.7%) against T47D breast cancer cells confirmed through cell cycle examination by flow cytometry. These results provided the evidence that CEE and the AEE can be developed as co-chemotherapeutic agents combined with doxorubicin to improve the effectiveness of breast cancer treatment.Keywords : Curcuma xanthorriza Roxb., Ficus septica Burm.f., doxorubicin, cell cycle.