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Biomedical subjects

T HAYASHIDA

Publications and source records attributed to T HAYASHIDA.

42 records · Page 3Linked to original sources

Corticotropins (ACTH). X. Biological investigations on alpha-corticotropin.

Purified alpha-corticotropin has been reported to exercise the following biological effects: (a) stimulation of the adrenal glands in normal and hypophysectomized rats, (b) production of blood eosinopenia in hypophysectomized rats, (c) maintenance of muscle glycogen in hypophysectomized rats, (d) inhibition of growth-promoting activity of somatotropin, (e) stimulation of melanocytes in the skin of frogs, (f) mobilization of fat into the liver of fasted mice, (g) stimulation of the accessory sex glands of castrated-hypophysectomized male rats, (h) induction of deciduoma formation in hypophysectomized-oophorectomized rats, and (i) elevation of the total red cell volume in hypophysectomized rats. alpha-Corticotropin has also been shown for the first time to act in synergism with lactogenic hormone as an essential galactopoietic hormone. The ability of alpha-corticotropin to elicit biological responses in the absence of the adrenal cortex is discussed.

Adrenocorticotropic Hormone↗

The influence of adrenocorticotropic and growth hormones on antibody formation.

The influence of pituitary adrenocorticotropic hormone (ACTH) and growth hormone (somatotropin, STH), singly and in combination, has been studied in normal, young adult rats, with respect to antibody formation against Fraction IA of Pasteurella pestis. When ACTH was administered during the period of immunization, in a daily dose just sufficient to prevent body weight increase relative to the non-treated, immunized controls, serum antibody levels against the specific antigen employed were significantly depressed. The administration of STH alone resulted in a marked increase in body weight. The increase in antibody level was not significant at the 5 per cent level when compared with the control values. The same dosage of STH given simultaneously with ACTH maintained body weight at a level slightly above that of the controls, and resulted in an effective counteraction of the antibody depression produced by the latter hormone.

Adrenocorticotropic Hormone↗