Impaired Postnatal Development in C/EBP.BETA.-deficient Mice

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  • BAI Tao
    Department of Obstetrics and Gynecology, Wakayama Medical University Department of Obstetrics and Gynecology, The Second Affiliated Hospital of China Medical University
  • TANAKA Tetsuji
    Department of Obstetrics and Gynecology, Wakayama Medical University
  • YUKAWA Kazunori
    Department of Physiology, Wakayama Medical University
  • UMESAKI Naohiko
    Department of Obstetrics and Gynecology, Wakayama Medical University
  • MATSUMOTO Makoto
    Department of Host Defence, Research Institute of Microbial Disease, Osaka University
  • AKIRA Shizuo
    Department of Host Defence, Research Institute of Microbial Disease, Osaka University

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  • Impaired Postnatal Development in C/EBP-β-deficient Mice
  • Impaired Postnatal Development in C EBP ベータ deficient Mice

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Abstract

Tail DNA genotyping of fetal and neonatal mice from C/EBPβ heterozygous parents was performed to determine whether the decreased number of surviving C/EBPβ mutants was caused by prenatal or postnatal death. Eighty-four 3-week-old mice born of heterozygous parents had significantly lower numbers of C/EBPβ-deficient offspring than the expected Mendelian ratio (29.8%+/+, 65.5%+/-, 4.76%-/-, P<0.05). The genotypes of 72 fetal mice from intercrossed heterozygotes showed approximately the expected 1:2:1 Mendelian ratio (18.1% +/+, 52.8% +/-, 29.2% -/-, P>0.05). No difference in the proportions by sex could be detected in these perinates. This data indicates that C/EBPβ-deficient mice have unknown lethal problems between the embryonic stage and weaning.<br>

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