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DOI: 10.1055/s-2004-832629
Red Clover Extracts Stimulate Differentiation of Human Osteoblastic Osteosarcoma HOS58 Cells
Publication History
Received: April 27, 2004
Accepted: June 25, 2004
Publication Date:
18 October 2004 (online)
Abstract
Different extracts from red clover (Trifolium pratense L.) were tested for their ability to stimulate the activity of osteoblastic osteosarcoma cells (HOS58). As a key marker of osteoblasticity we chose the activity of alkaline phosphatase (ALP). Whereas butanol and methanol extracts had no influence on either ALP or cellular protein production, enzyme activity was increased significantly on incubation with chloroform extracts. All extracts were analysed for isoflavone content. The data clearly suggest a role for red clover isoflavonoids in the stimulation of osteoblastic cell activity.
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L. Krenn
Institute of Pharmacognosy
University of Vienna
Althanstraße 14
1090 Vienna
Austria
Fax: +43-1-4277-9552
Email: liselotte.krenn@univie.ac.at