Potential immunosuppressive and antiinflammatory activities of Malaysian medicinal plants characterized by reduced cell surface expression of cell adhesion molecules.
In the search for agents effective against immune-mediated disorders and inflammation, we have screened Malaysian medicinal plants for the ability to inhibit the expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) on the surface of murine endothelial cells (F-2), and mouse myeloid leukaemia cells (M1), respectively. Of 41 kinds (29 species, 24 genera, 16 families) of Malaysian plants tested, 10 and 19 plant samples significantly downregulated the expression of ICAM-1 and VCAM-1, respectively. Bioassay-directed fractionation of an extract prepared from the bark of Goniothalamus andersonii showed that its ingredients, goniothalamin (1) and goniodiol (2) inhibited the cell surface expression of both ICAM-1 and VCAM-1. The present results suggest that Malaysian medicinal plants may be abundant natural resources for immunosuppressive and antiinflammatory substances.
Tanaka
S
S
Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan. stanaka@nodai.ac.jp
Yoichi
S
S
Ao
L
L
Matumoto
M
M
Morimoto
K
K
Akimoto
N
N
Honda
G
G
Tabata
M
M
Oshima
T
T
Masuda
T
T
bin Asmawi
M Z
MZ
Ismail
Z
Z
Yusof
S M
SM
Din
L B
LB
Said
I M
IM
D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D000911:Antibodies, Monoclonal; D004727:Endothelium / Q000187:drug effects; D006801:Humans; D007166:Immunosuppressive Agents / Q000494:pharmacology*; D018799:Intercellular Adhesion Molecule-1 / Q000187:drug effects*; D008296:Malaysia; D008519:Medicine, Traditional; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology*; D011753:Pyrones / Q000494:pharmacology; D051381:Rats; D014407:Tumor Cells, Cultured / Q000187:drug effects; D019010:Vascular Cell Adhesion Molecule-1 / Q000187:drug effects*
D000893:Anti-Inflammatory Agents; D000911:Antibodies, Monoclonal; D007166:Immunosuppressive Agents; D010936:Plant Extracts; D011753:Pyrones; D019010:Vascular Cell Adhesion Molecule-1; C446739:goniodiol; D018799:Intercellular Adhesion Molecule-1; C103280:goniothalamin