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    Selective estrogen receptor-beta (SERM-beta) compounds modulate raphe nuclei tryptophan hydroxylase-1 (TPH-1) mRNA expression and cause antidepressant-like effects in the forced swim test

    Access Status
    Fulltext not available
    Authors
    Clark, J.
    Alves, S.
    Gundlah, C.
    Rocha, B.
    Birzin, E.
    Cai, S.
    Flick, R.
    Hayes, E.
    Ho, K.
    Warrier, Sudha
    Pai, L.
    Yudkovitz, J.
    Fleischer, R.
    Colwell, L.
    Li, S.
    Wilkinson, H.
    Schaeffer, J.
    Wilkening, R.
    Mattingly, E.
    Hammond, M.
    Rohrer, S.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Clark, J. and Alves, S. and Gundlah, C. and Rocha, B. and Birzin, E. and Cai, S. and Flick, R. et al. 2012. Selective estrogen receptor-beta (SERM-beta) compounds modulate raphe nuclei tryptophan hydroxylase-1 (TPH-1) mRNA expression and cause antidepressant-like effects in the forced swim test. Neuropharmacology. 63 (6): pp. 1051-1063.
    Source Title
    Neuropharmacology
    DOI
    10.1016/j.neuropharm.2012.07.004
    ISSN
    0028-3908
    School
    School of Biomedical Sciences
    URI
    http://hdl.handle.net/20.500.11937/44992
    Collection
    • Curtin Research Publications
    Abstract

    Estrogen acts through two molecularly distinct receptors termed estrogen receptor alpha (ERa) and estrogen receptor beta (ERß) which bind estradiol with similar affinities and mediate the effects of estrogen throughout the body. ERa plays a major role in reproductive physiology and behavior, and mediates classic estrogen signaling in such tissues as the uterus, mammary gland, and skeleton. ERß, however, modulates estrogen signaling in the ovary, the immune system, prostate, gastrointestinal tract, and hypothalamus, and there is some evidence that ERß can regulate ERa activity. Moreover, ERß knockout studies and receptor distribution analyses in the CNS suggest that this receptor may play a role in the modulation of mood and cognition. In recent years several ERß-specific compounds (selective estrogen receptor beta modulators; SERM-beta) have become available, and research suggests potential utility of these compounds in menopausal symptom relief, breast cancer prevention, diseases that have an inflammatory component, osteoporosis, cardiovascular disease, and inflammatory bowel disease, as well as modulation of mood, and anxiety. Here we demonstrate an antidepressant-like effect obtained using two SERM-beta compounds, SERM-beta1 and SERM-beta2. These compounds exhibit full agonist activity at ERß in a cell based estrogen response element (ERE) transactivation assay. SERM-beta1 and 2 are non-proliferative with respect to breast as determined using the MCF-7 breast cancer cell-based assay and non-proliferative in the uterus as determined by assessing the effects of SERM-beta compounds on immature rat uterine weight and murine uterine weight. In vivo SERM-beta1 and 2 are brain penetrant and display dose dependent efficacy in the murine dorsal raphe assays for induction of tryptophan hydroxylase mRNA and progesterone receptor protein. These compounds show activity in the murine forced swim test and promote hippocampal neurogenesis acutely in rats. Taken together these data suggest that ERß may play an important role in modulating mood and the ERß specific compounds described herein will be useful tools for probing the utility of an ERß agonist for treating neuroendocrine-related mood disturbance and menopausal symptoms. Highlights: SERM-beta1 and 2 are selective, non-proliferative, brain penetrant ERß modulators. SERM-beta compounds modulated the levels of TPH1 mRNA and PR protein in raphe nuclei. SERM-beta compounds promoted neurogenesis and showed antidepressant activity in vivo. © 2012 Elsevier Ltd. All rights reserved.

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