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Original Article

Inhibitory potential of rambutan seeds extract and fractions on adipogenesis in 3T3-L1 cell line

Sylvia Soeng, Endang Evacuasiany, Wahyu Widowati, Nurul Fauziah, Visi Tinta Manik, Maesaroh Maesaroh.

Cited by (2)

Objective: Type 2 diabetes is a global health problem with increasing prevalence related to several conditions; one of these is due to obesity. Rambutan (Nephelium lappaceum L) seeds contain various phenolic compounds. The present study was designed to evaluate the phytochemical content and the inhibitory potential of rambutan seeds extract and fractions on glucose-6-phosphate dehydrogenase (G6PDH), α-glucosidase, and triglyceride activities ex vivo in 3T3-L1 cell line (pre-adipocytes) for an antidiabetic and antidiapogenesis agent screening.
Methods: Phytochemical analysis was performed using modified Farnsworth method. Cytotoxicity or cell viability of rambutan seed extracts (distillated ethanol 70%) and fractions (hexane, ethyl acetate, butanol and water fractions) were assayed using MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Triglyceride (TG) level, G6PDH and α-glucosidase acitivity and inhibitory activities were determined by commercial assay kits.
Results: Extract and fractions of rambutan seed contained alkaloid, terpenoid, triterpenoid and phenol; flavonoid, tannin, saponin and steroid were undetected. The lowest cytotoxic activity and safe substances on 3T3-L1 cell were rambutan seed extract and hexane fraction. Rambutan seed extract at the dose of 50 µg/ml was the most active to lower G6PDH and α-glucosidase as well as TG level.
Conclusion: Rambutan seed extract and hexane fraction have the phytochemical bioactive content to posses inhibitory potential on G6PDH and α-glucosidase as well as TG level in the present experimental set of 3T3-L1 cell lines.

Key words: 3T3-L1, anti-adipogenesis, antidiabetic, Nephelium lappaceum L, triglyceride

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