Effect of Light-Dark Rhythm and Tocopherol on Genital Maturity of Male Rats

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The present study was focussed on examining the influence of reproductive function in rats kept in lamp light and continuous darkness conditions with different dietary tocopherol respectively (Toc-supplement group, Toc-nonsupplement group). dl-Alpha-tocopheryl acetate was used for the dietary tocopherol. Male rats of Sprague-Dawley strain were fed the diets for 45 days. The following are results of our experiment.<BR>1) The weight of the accessory reproductive organs were significantly decreased in Toc-nonsupplement group under continuous darkness condition, but the decreasing was restrained in Toc-supplement group under continuous darkness condition.<BR>2) It was not observed that growth of spermatocyte and spermatid in Toc-nonsupplement group under lamp light and continuous darkness conditions. On the other hand, it was observed in Toc-supplement group under lamp light and even continuous darkness conditions.<BR>3) Total-tocopherol in plasma of rats kept in continuous darkness condition was realized tendency of the decreasing.<BR>4) From these results, it was suggested that alpha-tocopherol have influence on maturity of the genital organs of rats which were restrained by continuous darkness condition.
公益社団法人日本栄養・食糧学会の論文