Yoshiaki Shirataki

TL;DR: Among the seven cell lines, HSC-2 and HL-60 cells were the most sensitive to the cytotoxic action of these compounds, and an undetectable expression of Bcl-2 protein in control and drug-treated H SC-2 cells may explain the relatively higher sensitivity of this cell line to stilbenes and flavonoids.

TL;DR: It is demonstrated that gold kiwifruit extracts contain valuable, various bioactive materials, which can be separated with each other, although each fraction did not show any specific antimicrobial action.

TL;DR: The therapeutic value of persimmon peel extracts as potential antitumor and MDR‐reversing agents is indicated and the cytotoxic activity was not correlated with the radical intensity of the fractions.

TL;DR: In this article, five new resveratrol oligomers; pauciflorols A, C, B, isovaticanols B and C (8), and three new oligostilbene glucosides; paupliflorosides A (11), B (13), C (14), and C(15), were isolated from the stem bark of Vatica paucifera (Dipterocarpaceae) together with known 17 resveraratrol oligomer (4, 5, 7, 9, 10, 12 and

TL;DR: Four fractions showed higher cytotoxic activity against tumor cell lines such as human oral squamous cell carcinoma (HSC‐2) and human submandibular gland carcinomas (HSG) and higher multidrug resistance (MDR) reversal activity, than (±)‐verapamil as positive control.