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Estrogen receptor α-mediated adiposity-lowering and hypocholesterolemic actions of the selective estrogen receptor modulator acolbifene

International Journal of Obesity volume 29, pages 1236–1244 (2005)Cite this article

Abstract

OBJECTIVE:

The selective estrogen receptor (ER) modulator (SERM) acolbifene (ACOL), a potent and pure antiestrogen in the mammary gland and uterus, exerts beneficial pro-estrogenic actions on energy balance, insulin sensitivity and lipid metabolism. ACOL binds ERs α and β, both of which have been involved in the metabolic actions of estrogen. This study aimed at determining the identity of the ER involved in the beneficial metabolic actions of ACOL.

DESIGN AND MEASUREMENTS:

ACOL was administered for 4 weeks to male and female wild-type and ERα knockout (KO) mice, and indices of energy balance as well as plasma and liver lipid concentrations were determined.

RESULTS:

ERα KO mice were heavier, gained more fat mass and had larger adipose depots than their wild-type counterparts. In both genders, ACOL decreased fat gain (50%) and white adipose tissue mass in male and female wild-type, but not in ERα KO mice. ACOL reduced plasma cholesterol in female wild-type mice (−27%), whereas the compound remained ineffective in their ERα KO counterparts. Plasma triglycerides were unaffected by ACOL. Finally, ACOL decreased liver cholesterol and triglyceride concentrations only in wild-type female animals.

CONCLUSION:

The beneficial metabolic actions of the SERM ACOL on adiposity and on plasma and liver lipids are entirely due to its interaction with the ERα.

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Acknowledgements

We gratefully acknowledge the invaluable professional assistance of Josée Lalonde and Céline Martel. This work was supported by a grant from the Natural Sciences and Engineering Research Council of Canada to YD.

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Authors and Affiliations

  1. Department of Anatomy and Physiology, Faculty of Medicine, Laval Hospital Research Center, Laval University, Quebec City, Quebec, Canada

    C Lemieux, D Richard & Y Deshaies

  2. Department of Anatomy and Physiology, Faculty of Medicine, Molecular Endocrinology and Oncology Research Center of Laval University Hospital Research Center, Laval University, Quebec City, Quebec, Canada

    D Phaneuf & F Labrie

  3. Molecular Oncology Group, Royal Victoria Hospital, Montreal, Quebec City, Quebec, Canada

    V Giguère

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  1. C Lemieux
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Correspondence to Y Deshaies.

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Lemieux, C., Phaneuf, D., Labrie, F. et al. Estrogen receptor α-mediated adiposity-lowering and hypocholesterolemic actions of the selective estrogen receptor modulator acolbifene. Int J Obes 29, 1236–1244 (2005). https://doi.org/10.1038/sj.ijo.0803014

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