Phytoestrogen -zearalanol ameliorates memory impairment and neuronal DNA oxidation in ovariectomized mice
Clinics
;
68(9): 1255-1262, set. 2013. graf
Article
in English
| LILACS
| ID: lil-687753
ABSTRACT
OBJECTIVE:
The aim of this study was to evaluate the effect of a novel phytoestrogen, α-Zearalanol, on Alzheimer's disease-related memory impairment and neuronal oxidation in ovariectomized mice.METHODS:
Female C57/BL6 mice were ovariectomized or received sham operations and treatment with equivalent doses of 17β-estradiol or α-Zearalanol for 8 weeks. Their spatial learning and memory were analyzed using the Morris water maze test. The antioxidant enzyme activities and reactive oxygen species generation, neuronal DNA oxidation, and MutT homolog 1 expression in the hippocampus were measured.RESULTS:
Treatment with 17β-estradiol or α-Zearalanol significantly improved spatial learning and memory performance in ovariectomized mice. In addition, 17β-estradiol and α-Zearalanol attenuated the decrease in antioxidant enzyme activities and increased reactive oxygen species production in ovariectomized mice. The findings indicated a significant elevation in hippocampi neuronal DNA oxidation and reduction in MutT homolog 1 expression in estrogen-deficient mice, but supplementation with 17β-estradiol or α-Zearalanol efficaciously ameliorated this situation.CONCLUSION:
These results demonstrate that α-Zearalanol is potentially beneficial for improving memory impairments and neuronal oxidation damage in a manner similar to that of 17β-estradiol. Therefore, the compound may be a potential therapeutic agent that can ameliorate neurodegenerative disorders related to estrogen deficiency. .
Full text:
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Index:
LILACS (Americas)
Main subject:
Zeranol
/
Ovariectomy
/
Oxidative Stress
/
Phytoestrogens
/
Estradiol
/
Alzheimer Disease
/
Memory Disorders
Type of study:
Evaluation studies
Limits:
Animals
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2013
Type:
Article
/
Project document
Affiliation country:
China
Institution/Affiliation country:
Yunnan University/CN
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