| The Interactive Effect of Dietary Fat-Soluble Vitamin Levels on the Depression of Gonadal Development in Growing Male Rats Kept under Disturbed Daily Rhythm. | |
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MedLine Citation:
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PMID: 22293210 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The purpose of this study was to clarify the effects of nutrients on the gonadal development of male rats kept under constant darkness as a model of disturbed daily rhythm. In the present study we examined fat-soluble vitamins and their interactions in this test population. Four fat-soluble vitamins (vitamin A (V.A), vitamin D (V.D), vitamin E (V.E) and vitamin K (V.K)) were selected as experimental factors, and the dietary content of these vitamins was normal (AIN-93G) or three times the normal content. Lighting conditions (constant darkness or normal lighting) were also added as a factor. Four-week-old rats (Fischer 344 strain) were kept under constant darkness or normal lighting (12-h light/dark cycle) for 4 wk. The lighting condition and V.E, and the interactions between the lighting condition and V.E and between V.A and V.D were observed to affect the testes and epididymides weights. There was an influence of the lighting condition only on the seminal vesicles and prostate weights and the serum testosterone concentration. Among the constant darkness groups (D-groups), the highest value for testes weight was observed under the normal-V.A, normal-V.D and high-V.E diet. The interaction between lighting condition and V.E showed the testes weight increased slightly in response to changing to a high-V.E diet from a normal-V.E diet under normal lighting (N-group) but was greatly increased in response to this change in the D-group. It became clear that the amount of dietary V.E necessary for the gonadal development of rats increases when rats are kept under constant darkness. |
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Authors:
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Miho Hanai; Takatoshi Esashi |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of nutritional science and vitaminology Volume: 57 ISSN: 1881-7742 ISO Abbreviation: J. Nutr. Sci. Vitaminol. Publication Date: 2011 |
Date Detail:
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Created Date: 2012-02-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0402640 Medline TA: J Nutr Sci Vitaminol (Tokyo) Country: Japan |
Other Details:
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Languages: eng Pagination: 333-9 Citation Subset: IM |
Affiliation:
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Department of Nutrition and Life Science, Kanagawa Institute of Technology. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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