biochanin/breast neoplasms

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The sulfated conjugate of biochanin A is a substrate of breast cancer resistant protein (ABCG2).

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The aim of the study was to investigate the role of breast cancer resistance protein (BCRP, ABCG2) in the transport of biochanin A and its metabolites. Transport studies were carried out in MDCK/bcrp1 as well as in control cells, and samples were analysed for biochanin A aglycone and metabolites

Metabolism of the isoflavones genistein and biochanin A in human breast cancer cell lines.

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There is substantial variation in the growth inhibition of different human breast cancer cell lines by the isoflavones genistein and biochanin A. ZR-75-1 and BT-20 cells are > or = 2- to 4-fold less sensitive to these isoflavones than are MCF-7 cells, whereas T47D cells have a sensitivity similar to

Antiproliferative Activity of Combined Biochanin A and Ginsenoside Rh₂ on MDA-MB-231 and MCF-7 Human Breast Cancer Cells.

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Breast cancer is the most frequently diagnosed cancer in women worldwide. The antiproliferative activities of biochanin A (BA) and ginsenoside Rh₂ were determined by evaluating their inhibitory effect on MDA-MB-231 human breast cancer cell proliferation. The combination of BA with Rh₂ was also

Biochanin A Modulates Cell Viability, Invasion, and Growth Promoting Signaling Pathways in HER-2-Positive Breast Cancer Cells.

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Overexpression of HER-2 receptor is associated with poor prognosis and aggressive forms of breast cancer. Scientific literature indicates a preventive role of isoflavones in cancer. Since activation of HER-2 receptor initiates growth-promoting events in cancer cells, we studied the effect of

Biochanin A promotes proliferation that involves a feedback loop of microRNA-375 and estrogen receptor alpha in breast cancer cells.

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BACKGROUND Biochanin A and formononetin are O-methylated isoflavones that are isolated from the root of Astragalus membranaceus, and have antitumorigenic effects. Our previous studies found that formononetin triggered growth-inhibitory and apoptotic activities in MCF-7 breast cancer cells. We

Biochanin A inhibits breast cancer tumor growth in a murine xenograft model.

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OBJECTIVE Our objective was to determine the effect of the flavonoid biochanin A (BCA), administered alone or in combination with the flavonoids quercetin and epigallocatechin-3-gallate (EGCG), on the growth of human breast cancer MCF-7 cells in a murine xenograft animal model. METHODS MCF-7 tumors

The red clover (Trifolium pratense) isoflavone biochanin A inhibits aromatase activity and expression.

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Biochanin A is an isoflavone isolated from red clover (Trifolium pratense), and is a commercially available nutraceutical for women suffering from postmenopausal symptoms. Isoflavones resemble the structure of oestrogen, and display agonistic and antagonistic interactions with the oestrogen

Development of a food compositional database for the estimation of dietary intake of phyto-oestrogens in a group of postmenopausal women previously treated for breast cancer and validation with urinary excretion.

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The scientific literature contains evidence suggesting that women who have been treated for breast cancer may, as a result of their diagnosis, increase their phyto-oestrogen (PE) intake. In the present paper, we describe the creation of a dietary analysis database (based on Dietplan6) for the

Phytoestrogen concentration determines effects on DNA synthesis in human breast cancer cells.

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Thirteen isoflavonoids, flavonoids, and lignans, including some known phytoestrogens, were evaluated for their effects on DNA synthesis in estrogen-dependent (MCF-7) and -independent (MDA-MB-231) human breast cancer cells. Treatment for 24 hours with most of the compounds at 20-80 microM sharply

Effects of the isoflavonoid biochanin A on the transport of mitoxantrone in vitro and in vivo.

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The aim of our study was to investigate the effect of biochanin A on the accumulation and transport of mitoxantrone in breast cancer resistance protein (BCRP)-expressing normal cells and its impact on the pharmacokinetics (PK) and tissue distribution of mitoxantrone. In accumulation studies, the

The role of metabolism in mammary epithelial cell growth inhibition by the isoflavones genistein and biochanin A.

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The basis for the differential sensitivity of cultured normal human mammary epithelial (HME) cells and a transformed human breast cancer MCF-7 cell line to growth inhibition by the isoflavone genistein and its 4'-methyl ether derivative, biochanin A, was examined. In HME cells genistein is 5-fold

Combined effects of multiple flavonoids on breast cancer resistance protein (ABCG2)-mediated transport.

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OBJECTIVE The purpose of this study was to determine the dynamic parameter (EC50) of flavonoids apigenin, biochanin A, chrysin, genistein, kaempferol, hesperetin, naringenin, and silymarin for breast cancer resistance protein (BCRP) inhibition when used alone, and to evaluate their potential

Effects of flavonoids genistein and biochanin a on gene expression and their metabolism in human mammary cells.

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Genistein (GEN) and biochanin A (BCA), dietary isoflavones, possess breast cancer-preventive properties. Our objective was to examine the effect of physiologically relevant concentrations of BCA and GEN on gene expression in normal (HMEC), immortalized but nontumorigenic (MCF12A), and tumorigenic

Inhibition of P-glycoprotein by natural products in human breast cancer cells.

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Multidrug resistance (MDR) is one of the most significant obstacles in cancer chemotherapy. One of the mechanisms involved in the development of MDR is the over-expression of P-glycoprotein (P-gp). It is widely known that natural compounds found in vegetables, fruits, plant-derived beverages and

Anticarcinogenic effects of isoflavones may be mediated by genistein in mouse mammary tumor virus-induced breast cancer.

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Isoflavones are known to exert anticancer effects. These effects were examined using two isoflavones, biochanin A and daidzein, in a mouse mammary tumor virus (MMTV)-induced spontaneous breast cancer model. Emphasis was placed on isoflavone metabolism by the intestinal microflora and changes in

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