TY - JOUR
T1 - Dietary relevant mixtures of phytoestrogens inhibit adipocyte differentiation in vitro
AU - Taxvig, Camilla
AU - Specht, Ina Olmer
AU - Boberg, Julie
AU - Vinggaard, Anne Marie
AU - Nellemann, Christine
N1 - Copyright © 2013 Elsevier Ltd. All rights reserved.
PY - 2013
Y1 - 2013
N2 - Phytoestrogens (PEs) are naturally occurring plant components, with the ability to induce biological responses in vertebrates by mimicking or modulating the action of endogenous hormones. Single isoflavones have been shown to affect adipocyte differentiation, but knowledge on the effect of dietary relevant mixtures of PEs, including for instance lignans, is lacking. In the current study dietary relevant mixtures of isoflavones and their metabolites, lignans and their metabolites, coumestrol, and a mixture containing all of them, were examined for effects on adipogenesis in 3T3-L1 adipocytes, as well as tested for their PPARγ activating abilities. The results showed that mixtures of isoflavonoid parent compounds and metabolites, respectively, a mixture of lignan metabolites, as well as coumestrol concentration-dependently inhibited adipocyte differentiation. Furthermore, a mixture of isoflavonoid parent compounds, and a mixture of isoflavonoid metabolites were found to have PPARγ activating abilities. These results suggest that PEs can affect pathways known to play a role in obesity development, and indicate that the inhibitory effect on adipocyte differentiation does not appear to be strictly associated with PPARγ activation/inhibition. The current study support the hypothesis that compounds with endocrine activity can affect pathways playing a role in the development obesity and obesity related diseases.
AB - Phytoestrogens (PEs) are naturally occurring plant components, with the ability to induce biological responses in vertebrates by mimicking or modulating the action of endogenous hormones. Single isoflavones have been shown to affect adipocyte differentiation, but knowledge on the effect of dietary relevant mixtures of PEs, including for instance lignans, is lacking. In the current study dietary relevant mixtures of isoflavones and their metabolites, lignans and their metabolites, coumestrol, and a mixture containing all of them, were examined for effects on adipogenesis in 3T3-L1 adipocytes, as well as tested for their PPARγ activating abilities. The results showed that mixtures of isoflavonoid parent compounds and metabolites, respectively, a mixture of lignan metabolites, as well as coumestrol concentration-dependently inhibited adipocyte differentiation. Furthermore, a mixture of isoflavonoid parent compounds, and a mixture of isoflavonoid metabolites were found to have PPARγ activating abilities. These results suggest that PEs can affect pathways known to play a role in obesity development, and indicate that the inhibitory effect on adipocyte differentiation does not appear to be strictly associated with PPARγ activation/inhibition. The current study support the hypothesis that compounds with endocrine activity can affect pathways playing a role in the development obesity and obesity related diseases.
KW - 3T3-L1 Cells
KW - Adipocytes
KW - Animals
KW - Cell Differentiation
KW - Diet
KW - In Vitro Techniques
KW - Mice
KW - PPAR gamma
KW - Phytoestrogens
U2 - 10.1016/j.fct.2012.12.060
DO - 10.1016/j.fct.2012.12.060
M3 - Journal article
C2 - 23348407
VL - 55
SP - 265
EP - 271
JO - Food and Chemical Toxicology
JF - Food and Chemical Toxicology
SN - 0278-6915
ER -