Folic Acid Deficiency Does Not Adversely Affect Oocyte Meiosis in Mice

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抄録

Spindle defect and chromosome misalignment occuring in oocyte meiosis induce nondisjunction. Nondisjunction causes Down syndrome, also known as trisomy 21. Folic acid (FA) is an essential nutrient composition for fetal growth and development. It has been reported that FA nutritional status is associated with the risk of Down syndrome. However, to our knowledge, little is known about the effect of FA deficiency on abnormal oocytes (spindle defects, chromosome misalignments and immature oocyte) in vivo. In the present study, we investigate the effects of FA deficiency on oocyte meiosis in female mice. In order to induce FA deficiency in mice, female Crl:CD1 mice were fed a FA-free diet for 58 d. The diet also contained an antibiotic which has functions on limiting FA formation by intestinal microorganisms. The level of FA deficiency was determined by measuring the concentration of FA in the liver, hemocyte, uterus, ovary, and urine. FA concentrations in these samples from the FA-deficient group were 50-90% lower. Despite this, the frequency of abnormal oocytes was no different between the FA-deficient and control groups (20.0% vs 14.6%). According to the past research, FA transporter was strongly expressed in oocytes. Hence, it is possible that FA-free diets may not affect the concentration of oocyte FA in mice. To sum up these data, our study concluded that FA deficiency did not adversely affect oocyte meiosis.

収録刊行物

  • Journal of Nutritional Science and Vitaminology

    Journal of Nutritional Science and Vitaminology 62(6), 375-379, 2016

    一般財団法人 学会誌刊行センター

各種コード

  • NII論文ID(NAID)
    130005332258
  • NII書誌ID(NCID)
    AA00703822
  • 本文言語コード
    ENG
  • ISSN
    0301-4800
  • NDL 記事登録ID
    027809640
  • NDL 請求記号
    Z53-B484
  • データ提供元
    NDL  J-STAGE 
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