ラットの腎臓の組織構造における系統差

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  • MURATA Nanae
    National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries
  • YABUKI Akira
    Laboratry of Veterinary Anatomy, Faculty of Agriculture, Kagoshima University
  • MATSUMOTO Mitsuharu
    Laboratry of Veterinary Anatomy, Faculty of Agriculture, Kagoshima University
  • NISHINAKAGAWA Hayao
    Laboratry of Veterinary Anatomy, Faculty of Agriculture, Kagoshima University
  • SUZUKI Shusaku
    Laboratry of Veterinary Anatomy, Faculty of Agriculture, Kagoshima University

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タイトル別名
  • Strain Differences in Morphometrical Characteristics of Rat Kidneys

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To clarify the strain differences in the morphology of the rat kidneys, we investigated the morphometrical characteristics of the kidneys of Slc:Wistar, Slc:SD, and F344/NSlc rats. The diameter of the renal corpuscles in female F344/N rats is smaller than that in female Wistar rats. Although sex differences (males > females) were shown in SD and F344/N rats, no effects of castration were detected in any of the groups. Strain-dependent differences in the percentage of renal corpuscles with a cuboidal parietal layer were found in both male and female groups. The highest percentage of them was noted in male Wistar rats. Effects of castration were observed in female Wistar and male F344/N rats, and the values after castration were significantly higher than those in the intact animals. As for the number of proximal convoluted tubular nuclei, no strain differences were detected in either the male or female groups. Although a sex difference was found in SD rats (female>male), no effects of castration were detected in any of the groups. In female F344/N rats, numerous numbers of PAS-positive granules, which were observed in the proximal convoluted and straight tubular epithelia, were noted. Orchiectomy induced an increase of these granules in male SD and F344/N rats, but ovariectomy showed no effects on them in any strains. This is the first study to clarify the strain differences in the morphological characteristics of the kidneys in ordinary rat strains.<br>

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