Planta Medica, Table of Contents Planta Med 2003; 69(4): 321-326DOI: 10.1055/s-2003-38886 Original Paper Pharmacology © Georg Thieme Verlag Stuttgart · New York Isolation of (+)-Catechin and (-)-Epicatechin from Actinidia arguta as Bone Marrow Cell Proliferation Promoting Compounds Fumihide Takano1 , Tomoaki Tanaka1 , Eiko Tsukamoto1 , Nobuo Yahagi1 , Shinji Fushiya1 1Experimental Station for Medicinal Plant Studies, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Aoba-ku, Sendai, Japan Recommend Article Abstract Buy Article Abstract The MeOH extract of stems of Actinidia arguta promoted proliferation of cultured bone marrow cells and stimulated formation of myeloid colonies from bone marrow cells. (+)-Catechin (1) and (-)-epicatechin (2) were isolated as active compounds from the MeOH extract. Compounds 1 and 2 stimulated the cell proliferation in a concentration-dependent manner in the range of 1 to 100 mg/mL. Compounds 1 and 2 also stimulated formation of myeloid colonies and enhanced the effect of interleukin-3 (IL-3) to increase the number of colony forming-units in culture (CFU-c). In an ex vivo experiment using a model mouse of decreasing bone marrow functions, orally administrated 1 (100 mg/kg/day) stimulated IL-3-induced CFU-c formation of the bone marrow cells. Key words Actinidia arguta - Actinidiaceae - (+)-catechin - (-)-epicatechin - bone marrow cells - proliferation - myeloid colony Full Text References References 1 Gentile P, Epremian B E. Approaches to ablating the myelotoxicity of chemotherapy. Crit Rev Oncol Hematol. 1987; 7 71-7 2 Danova M, Aglietta M. Cytokine receptors, growth factors and cell cycle in human bone marrow and peripheral blood hematopoietic progenitors. Hematologica. 1997; 82 622-9 3 Takatsuki F, Miyasaka Y, Kikuchi T, Suzuki M, Hamuro J. Improvement of erythroid toxicity by lentinan and erythropoietin in mice treated with chemotherapeutic agents. 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Combination cancer chemoprevention with green tea extract and sulindac shown in intestinal tumor formation in Min mice. J Cancer Res Clin Oncol. 2001; 127 69-72 Prof. Dr. S. Fushiya Dept. of Exp. Station for Medicinal Plant Studies Graduate School of Pharmaceutical Sciences Tohoku University Aobayama Aoba-ku Sendai 980-8578 Japan Email: fushiya@mail.pharm.tohoku.ac.jp Fax: +81-22-217-6798