About the Authors

Yuka Keyamura

Affiliations Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan, Division of Biological Chemistry, Department of Molecular Biology, Showa University School of Pharmacy, Tokyo, Japan

Chifumi Nagano

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Masayuki Kohashi

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Manabu Niimi

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Masanori Nozako

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Takashi Koyama

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Reiko Yasufuku

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Ayako Imaizumi

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Hiroyuki Itabe

Affiliation Division of Biological Chemistry, Department of Molecular Biology, Showa University School of Pharmacy, Tokyo, Japan

Tomohiro Yoshikawa

yoshikawa.tomohiro.a@otsuka.jp

Affiliation Free Radical Research Project, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan

Competing Interests

The authors, YK, CN, MK, MN, MN, TK, RY, AI, TY are employed by Otsuka Pharmaceutical Co., Ltd, and probucol was provided by Otsuka Pharmaceutical Co., Ltd. We do not have any other declarations such as consultancy or patents. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YK TY. Performed the experiments: YK CN MK M. Niimi M. Nozako TK RY AI TY. Analyzed the data: YK CN MK HI TY. Contributed reagents/materials/analysis tools: HI. Wrote the paper: YK HI TY.