BACKGROUND: Normal metabolism of oxygen and exogenous factors constantly generate free radicals which could be harmful to the human body. Human need antioxidants to provide protection against free radicals, thus plants are a good source of natural antioxidants. Phyllanthus niruri (P. niruri) has been known to possess several medicinal properties and contain numerous active phytochemical. In this research, we conducted phytochemical screening and antioxidant assay of P. niruri extract along with the compounds rutin and quercetin, which are flavonoids possessing medicinal properties. This study was conducted to determine P. niruri, rutin and quercetin as antioxidant. METHODS:In this study, qualitative phytochemical screening was performed to detect phenol, flavonoid, saponin, tannin, steroid/triterpenoid, terpenoid and alkaloid in P. niruri extract. Antioxidant analysis of P. niruri, rutin and quercetin was conducted using total measured phenolic content, 2,2-diphenyl-1-picrylhydrazil (DPPH), 2,2'-azinobis-3-ethylbenzo-thiazoline-6-sulfonic acid (ABTS) and ferric reducing antioxidant power (FRAP) assays. RESULTS:The study revealed that P. niruri extract contained saponin, phenol, flavonoid and tannin based on phytochemical screening. In DPPH and ABTS assays quercetin possessed highest antioxidant activity with IC 50 value of 0.55 and 1.17 µg/ml respectively. Meanwhile, P. niruri extract showed the highest FRAP activity which was 373.95 µM Fe(II)/µg extract. Rutin possessed the lowest antioxidant activity in all antioxidant assays. CONCLUSION:This study confirmed that P. niruri extract and quercetin have great potential as a natural antioxidant source. KEYWORDS
<p class="Abstract">In this study, we evaluated the effects of ethanol extracts of Detam 1 soybean, Jati belanda leaf, and the combination toward expression of peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein alpha (C/EBPα), and stearoyl-CoA desaturase 1 (SCD1) genes in 3T3-L1 cells as anti-adipogenesis and anti-obesity. The differentiation of 3T3-L1 cells into adipocyte was conducted using induction medium consist of Dulbecco's Modified Eagle's Medium, 3-isobutyl-1-methylxanthine, insulin, dexamethasone, and fetal bovine serum. The expression of PPARγ, C/EBPα, and SCD1 gene was measured using real-time quantitative polymerase chain reaction (qPCR). Ethanol extract of Jati belanda at a concentration of 50 μg/mL was most effective to reduce PPARγ, C/EBPα, and SCD1 gene expression in 3T3-L1 cells. Ethanol extract of Detam 1 soybean failed to reduce PPARγ gene expression, whilst in the concentration of 50 μg/mL it was able to significantly reduce the C/EBPα and SCD1 gene expression. Both ethanol extracts of Detam 1 soybean and Jati belanda have potential as anti-adipogenesis and anti-obesity by suppressing adipogenesis-related gene expression, particularly C/EBPα and SCD1.</p><p><strong>Video Clip:</strong></p><p><a href="https://youtube.com/v/UWv9nChmF2Y">Maintaining 3T3-L1 cell culture</a>: 5 min 15 sec</p>
Fruit of Mangosteen (Garcinia mangostana L.) is well-known in Indonesia and other Southeast Asian countries. Studies have shown that extract of the pericarp of mangosteen contained mostly of xanthones exhibit many biological activities, especially as an antitumor. This study aimed to investigate the cytotoxic activity and selectivity of Mangosteen Peel Extract (MPE) and α-mangostin against two leukemia cell lines (HL-60 and K-562) and the normal lymphocyte cells from two different donors. The cytotoxic activity was performed using 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxyme-thoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay. Imatinib and Isotretinoin were used as a positive control to the K-562 and HL-60 cells, respectively. The MPE and α-mangostin revealed higher mortality toward leukemia cell lines rather than toward lymphocyte cells, with more than 80% of HL-60 and K-562 cells died at 6.25 and 25 μg/ml, respectively. MPE was more toxic and selective against K-562 with IC50 of 2.79 μg/ml and SI of 8.27, while α-mangostin was more toxic and selective against HL-60 with IC50 of 1.12 μg/ml and SI of 22.34. MPE and α-mangostin showed potent sensitivity and selectivity to leukemia cells, hence these are considered as promising sources for future leukemia treatment.
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