Indonesian Journal of Cancer Chemoprevention
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Kaempferia galanga L. Rhizome As a Potential Dental Plaque Preventive Agent
Full text linkDental plaque prevention can be achieved by inhibition of mouth cavity microbes to built biofilm. Kaempferia galanga rhizome has been known as a potential antibacterial agent. This research aimed to reveal the potency of Kaempferia galanga extract and essential oil as anti plaque active agents, based on their in vitro inhibitory activity against the planktonic growth and biofilm of Streptococcus mutans ATCC 21752. Kaempferia galanga extract was obtained by defatting dried-pulverized samples in petroleum ether prior to immersion in 70% ethanol. The fresh rhizome was steam-hydro distilled for 6 h to yield the essential oil. Antibacterial and anti biofilm assays were measured by micro dilution technique on polystyrene 96-wells micro titer plates at 37°C. The percentage of inhibition was calculated by comparing the absorbance of samples to the vehicle (control) measured by micro plate reader at 595 nm. Biofilms formed were first stained by 1% crystal violet. The above assays were performed in triplicates. This study revealed that both K. galanga rhizome essential oil and ethanolic extract showed antibacterial and antibiofilm activity towards S. mutans. The ethanol extract showed MIC90 value at 0.091% w/v and MBC at 2.724% w/v for antibacterial activity; IC50 at 0.048 % w/v for anti biofilm formation activity; and EC50 at 0.052%w/v for biofilm degradation activity. Until the highest concentration tested (0.6%w/v), the MIC90 and MBC values of the essential oil were not revealed, but higher biofilm inhibitory activity i.e. IC50 at 0.025 % w/v; and EC50 at 0.034 %w/v were observed. Key words: biofilm inhibitor, antibacterial, Kaempferia galang
QSAR Analysis of Rocaglamide Derivatives Cytotoxic Activities Using LFER Hansch Model
Full text linkRocaglamide derivatives are the compounds which have featuring cyclopenta[b]tetra-hydrobenzofuran skeleton. Until now it includes more than 50 naturally occurring derivatives. They were chosen to be interesting candidates for possible therapeutic agents primarily in the field of cancer chemotherapy due to their cytotoxic activities data against various cancer cells. A quantitative structure activity relationship (QSAR) studies were done to investigate physicochemical properties of molecule which contribute to their activities. Series of rocaglamide derivatives have been used and analyzed using linear free energy regression Hansch model for their cytotoxic activities against MONO-MAC-6 leukemia cells, RAJI lymphoma cells and MEL-JUSO melanoma cells. Results showed that the best QSAR equations were revealed involving C Log P and CMR parameters with nonlinear regression relationships in cytotoxic activities of rocaglamide derivatives against cancer cells above. Keywords: QSAR, Rocaglamide, LFER Hansc
Fatty Acids Composition of Red and Purple Pomegranate (Punica granatum L) Seed Oil
Full text linkThe aim of this investigation was to determine the content and composition of fatty acid in seed oil of red and purple pomegranate (Punica granatum L). The extraction process was performed by Soxhlet extractor with petroleum ether as solvent. The separation and identification of pomegranate seed oil was done by using GCMS. The total oil content of red and purple pomegranate were 128 g/kg d.w and 103 g/kg d.w respectively. Both showed the same major fatty acids as palmitic, stearic, oleic, linoleic and punisic acid. Oleic acid (19-21%) and linoleic acid (20-21%) were found as the most dominant fatty acids in red pomegranate, whereas purple pomegranate seed oil was dominated by oleic acid (41-43%) and punicic acid (0-25%). Neutral lipid fraction of red and purple pomegranate seed oils was more dominant than glycolipid and phospholipid. Neutral lipid fraction of red and purple pomegranate seed oil were 89 % and 91% respectively. Glycolipid fraction of red and purple pomegranate seed oil were 8 % and 5 %, whereas phosholipid fraction of red and purple pomegranate seed oil were 3 % and 4 %. The punicic acid content of total lipid of purple pomegranate seed oil (PPSO) (0-25%) was higher than red pomegranate (RPSO) (9-16%). On the contrary neutral lipid of red pomegranate showed higher punicic acid content (54-75%) than the purple pomegranate (14-55%). Glycolipid of red pomegranate contained punicic acid (0-42%). The punicic acid content of the phospholipid fraction of red pomegranate was higher (0-22 %) than the one of purple pomegranate (0-2%).Key words : fatty acid, pomegranate, Punica granatum, punicic acid, seed oi
Apoptosis and Antioxidant Activities of Catharanthus rosues [L] G.Don Extract on Breast Cancer Cell Line
Full text linkTapak dara or Madagascar Periwinkle (Catharanthus roseus [L] G.Don), a natural plant, is empirically reported to have promising anticancer activity. To elucidate its mechanism, a research was conducted to investigate the possible ethanol extract of C. roseus in inducing apoptosis on breast cancer cell line (T47D). Antioxidant activity of C. roseus was investigated as well. Sub-G1 flowcytometric apoptotic analysis result showed that extract of C. roseus at 6.25 μg/mL induced apoptosis for 26.365%. Increasing extract concentration resulted an increasing apoptotic level as well, extract at concentration of 12.5 μg/mL induced apoptosis for 22.235%. Meanwhile doxorubicin at concentration of 10 μg/mL induced apoptosis for 36.055%. The antioxidant activity was determined by using in vitro assay: inhibition of 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity. Antioxidant activity of C. roseus extract were compared to quercetin and butylated hydroxyanisol (BHA), as positive controls. The results showed that DPPH IC50 of C. roseus extract, quercetin and BHA were 358.411 μg/mL, 19.200 μg/mL and 94.178 μg/mL, respectively. We suggest that C. roseus extract had a potential anticancer activity by inducing apoptosis.Key words : antioxidant, DPPH, Catharanthus roseus, apoptosis, breast cancer, T47