期刊
CLIMACTERIC
卷 19, 期 6, 页码 568-573出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/13697137.2016.1238452
关键词
Royal jelly; estrogen; memory impairment; depression; ovariectomized rat; postmenopausal; syndrome; fatty acids; sterols
资金
- Japan Society for Menopause and Women's Health under JMWH Bayer Grant
- Yamada Bee Company under Yamada Research Grant
- Kanae Foundation for the Promotion of Medical Science under Asia Oceania Collaborative Research Grants
- Japan Menopause Society under JMS Bayer Schering Pharma Grant
- Grants-in-Aid for Scientific Research [15H05644, 16K08277, 16K15151] Funding Source: KAKEN
Objective: Royal jelly (RJ) from honeybees (Apis mellifera) has estrogenic activity. Estrogen deficiency after menopause leads to a high risk of memory impairment and depression as well as metabolic syndrome and osteoporosis. We here investigated the effect of RJ on memory impairment and depression-like behaviors in ovariectomized (OVX) rats. Methods: OVX rats were administered with RJ for 82 days. Hippocampus-dependent spatial memory and depression-like behaviors were assessed by the Morris water maze test and the forced swimming test, respectively. The weights of body, brain and uterus and the contents of protein and myelin galactolipids including galactosylceramide and sulfatide were measured. Results: Memory impairment and depression-like behaviors in OVX rats were recovered to the levels of sham-operated rats by RJ administration. Increased body weight and decreased uterine weight in OVX rats were recovered to the levels of sham-operated rats by 17 beta-estradiol (E2) administration but not by RJ administration. In contrast, brain weight was slightly increased by RJ administration but not by E2 administration. The contents of protein and myelin galactolipids were higher in the brains of RJ-administered OVX rats than in the brains of E2-administered OVX rats. Conclusion: The results suggest that RJ has a beneficial effect on neurological symptoms of a menopausal disorder.
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