| Behavioral and IL-2 Responses to Diosgenin in Ovariectomized Rats. | |
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MedLine Citation:
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PMID: 22559733 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Neuroimmune system is involved in communication between the endocrine and nervous systems, which may take part in the effects of dioscorea, reversing changes of anxiety-like behavior and interleukin (IL)-2 levels in the brains of ovariectomized (OVX) rats. This study was aimed at evaluating administration of diosgenin, an ingredient of dioscorea, on neuroimmune and behavioral functions in OVX animals. One month after ovariectomy, female Wistar rats were fed daily with diosgenin (0, 10, 50 or 100 mg/kg/day) and the elevated plus-maze and learned helplessness tests were used to measure anxiety-like and depressive behaviors after 23 and 24 days of diosgenin treatment, respectively. In the learned helplessness test, the rats needed to cross from one compartment of the shuttle box to the opposite compartment to avoid or escape the shock. If the rat failed to escape the shock in 10 sec, a "failure" was recorded. Two days after the behavioral tests, the brain was removed to measure levels of IL-2 which was used as an indicator of neuroimmune function. Anxiety-like behavior in the OVX rats was not affected by diosgenin treatment. However, avoidance behavior in the learned helplessness test in the OVX rats with high anxiety (HA) levels was improved by treatment with diosgenin at the dosage of 10mg/kg/day. Interestingly, the number of failures in the same test was increased when the dosage of diosgenin was increased to 50 mg/kg/day, and this was accompanied by an increase in IL-2 levels in the pituitary gland. In addition, treatment with 100 mg/kg/day of diosgenin resulted in decreased IL-2 levels in the amygdala and prefrontal cortex of the OVX rats with low anxiety levels, and in increased IL-2 levels in the amygdala of OVX HA rats. These results show that chronic diosgenin treatment influences IL-2 levels in the brain of OVX rats and affects depressive behavior in OVX HA rats, but not OVX low anxiety rats. |
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Authors:
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Ying-Jui Ho; Sheng-Yao Tai; Cornelius R Pawlak; An-Li Wang; Chun-Wen Cheng; Ming-Hong Hsieh |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Chinese journal of physiology Volume: 55 ISSN: 0304-4920 ISO Abbreviation: Chin J Physiol Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-05-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7804502 Medline TA: Chin J Physiol Country: China (Republic : 1949- ) |
Other Details:
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Languages: eng Pagination: 91-100 Citation Subset: IM |
Affiliation:
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School of Psychology, Chung Shan Medical University Hospital, Chung Shan Medical University, Taichung 40201, Taiwan, Republic of China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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