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2000
Volume 28, Issue 14
  • ISSN: 1386-2073
  • E-ISSN: 1875-5402

Abstract

Introduction

Sex hormones are important factors in maintaining brain function and acting as brain protectors. Recent research suggests that neuronal damage in brain aging may be linked to the methylation of the estrogen receptor α (ERα). However, the mechanism of Zuogui Pills (ZGW) in brain-aging ERα DNA methylation and neuronal repair remains unknown.

Methods

D-galactose-induced ovary removal mice were used as a model of aging. Changes in estrous cycle were detected in mice by vaginal cell smear. Animal behavior tests, including the Morris water maze (MWM) and new object recognition (NOR) test, were conducted. Hematoxylin-eosin (HE) and Nissl-staining were carried out to assess hippocampal neurogenesis. Enzyme-linked immunosorbent assay (ELISA) was performed for 5-methylcytosine methylation levels, and immunohistochemistry (IHC) and western blotting (WB) experiments were performed to assess ERα/DNA methyltransferase 1 (DNMT1) expression after ZGW treatment. Finally, bisulfite sequencing PCR (BSP) analysis was performed to identify methylated differentially expressed estrogen receptor 1 () gene in D-gal-induced senescent neurons before and after ZGW treatment.

Results

We found that ERα methylation was involved in the delayed brain ageing process of ZGW. Mechanistically, ZGW can improve the learning and memory ability of brain-aging mice, reduce the expression of 5-methylcytosine (5-mc) in serum, increase the amount of ERα, inhibit the expression of DNMT1, and significantly reduce methylated expression of the gene.

Conclusion

Our data suggested that ZGW slowed down D-gal-induced brain aging in mice, and these results showed that ZGW is beneficial for aging. It may be used for neuronal protection in aging.

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/content/journals/cchts/10.2174/0113862073306093240820113714
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Zuogui Pills Improve the Learning and Memory Ability of Brain-Aging Mice through the Estrogen Receptor ERα Methylation Pathway
Comb Chem High Throughput Screen 28, 2490 (2025); https://doi.org/10.2174/0113862073306093240820113714
/content/journals/cchts/10.2174/0113862073306093240820113714
/content/journals/cchts/10.2174/0113862073306093240820113714
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  • Article Type:     Research Article
Keyword(s): anti-aging; DNA methylation; ERα; ESRI gene; Memory; Zuogui pill

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