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Current Molecular Pharmacology

Editor-in-Chief

ISSN (Print): 1874-4672
ISSN (Online): 1874-4702

Research Article

Combined Bazedoxifene and Genistein Ameliorate Ovariectomy-Induced Hippocampal Neuro-Alterations via Activating CREB/BDNF/TrkB Signaling Pathway

Author(s): Mai A. Samak*, Abeer A. Abdelrahman, Walaa Samy and Shaimaa A. Abdelrahman

Volume 16, Issue 6, 2023

Published on: 31 October, 2022

Article ID: e020922208452 Pages: 18

DOI: 10.2174/1874467215666220902112939

Price: $65

Abstract

Objectives: The scientific research community devotes stupendous efforts to control the arguable counterbalance between the undesirable effects of hormone replacement therapy (HRT) and post-menopausal syndrome. The recent emergence of 3rd generation selective estrogen receptor modulators and phytoestrogens has provided a promising alternative to HRT. Hence, we assessed the potential effects of combined Bazedoxifene and Genistein on hippocampal neuro-alterations induced by experimental ovariectomy.

Methods: For this purpose, we utilized forty-eight healthy sexually mature female Wistar rats assorted to control, ovariectomy (OVX), Genistein-treated ovariectomized (OVX+GEN) and Bazedoxifene and Genistein-treated ovariectomized (OVX+BZA+GEN) groups. Hippocampi samples from various groups were examined by H&E, silver stains and immunohistochemical examination for calbindin-D28k, GFAP, and BAX proteins. We also assessed hippocampal mRNA expression of ERK, CREB, BDNF and TrkB.

Results: Our histopathological results confirmed that combined BZA+GEN induced restoration of hippocampal neuronal architecture, significant reduction of GFAP and BAX mean area % and significant upregulation of calbindin-D28k immunoexpression. Furthermore, we observed significant upregulation of ERK, CREB, BDNF and TrkB mRNA expression in the BZA+GEN group compared to the OVX group.

Conclusion: Taken together, our findings have provided a comprehensive assessment of histological, immunohistochemical and cyto-molecular basis of combined Genistein and Bazedoxifene ameliorative impacts on hippocampal neuro-alterations of OVX rats via upregulation of Calbindin, CERB, BDNF, Trk-B and ERK neuronal expression.

Keywords: Bazedoxifene, genistein, ovariectomy, hippocampus, CREB/BDNF/TrkB pathway, neuro-alterations.

Graphical Abstract
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