神経分泌と前葉細胞

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タイトル別名
  • Correlation between Development of the Hypothalamo-neurohypophysial
  • シンケイ ブンピツ ト ゼン ヨウ サイボウ 6
  • Neurosecretory System and Differentiation of Anterior Pituitary Cells in the Rabbit
  • VI.家兎における視床下部-下垂体後葉神経分泌系の発達と前葉細胞の分化との関連

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説明

Fetal and post-natal development of the hypothalamo-neurohypophysial neurosecretory system (HNS) and adenohypophysis were observed from the neurosecretory point of view.<br>By the 20th day after coitus, the HNS of the fetus was formally organized, but it was not so complicated as that of the adult. The neurosecretory substance appeared in the neurons of the supraoptic and paraventricular regions on the 20th day after coitus, whereas no demonstrable neurosecretory substance was found in the nerve fibers of the hypothalamo-hypophysial tract and neurohypophysis. It began to appear in the neurohypophysis of the fetus by the 25th day after coitus and increased gradually in concentration in the neurohypophysis throughout fetal and infant life. The earliest sign of production of neurosecretory material was observed as a kind of nuclear secretion. The cytoplasmic secretory actively was found to follow the initial activity of the nucleus.<br>All cells of the anterior pituitary were basophilic until the 25th day after coitus. PAS-positive basophils appeared in the dorsal part and zona tuberalis of the adenohypophysis on the 28th day after coitus. Acidophils which appeared in small numbers could be identified by their staining reaction on the 30th day after coitus. They increased gradually in number and size from birth onward.<br>From the results mentioned above, it was postulated that the basophils and acidophils of the adenohypophysis were developed by the neurosecretory substance.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 33 (6), 452-460, 1963

    公益社団法人 日本畜産学会

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