ÉTUDE VOLUMÉTRIQUE DE L'INTERRÉNAL ANTÉRIEUR AU COURS DE LA SMOLTIFICATION DE SALMO SALAR L.
ABSTRACT The interrenal of fish represents the embryological and functional homologue of mammalian adrenal cortex. The planimetric evaluation of interrenal area, dispersed in cephalic lymphoid kidney, shows, during the »smoltification« of Salmon, Salmo salar L., a marked and significative hypertroph...
| Published in: | Acta Endocrinologica |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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Bioscientifica
1960
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| Online Access: | http://dx.doi.org/10.1530/acta.0.xxxiii0142 https://eje.bioscientifica.com/view/journals/eje/XXXIII/I/acta_XXXIII_I_013.xml |
| Summary: | ABSTRACT The interrenal of fish represents the embryological and functional homologue of mammalian adrenal cortex. The planimetric evaluation of interrenal area, dispersed in cephalic lymphoid kidney, shows, during the »smoltification« of Salmon, Salmo salar L., a marked and significative hypertrophy of this glandular tissue. The absolute and relative volume of interrenal is increased of about 100 % in the smolt , migrating form, versus the parr , sedentary form. The blood supply exhibits a great development. The glandular hypertrophy and hyperaemia are concomitant with nuclear and nucleolar hypertrophy and with a gradual vacuolisation of the cells, facts previously described. These results are discussed in connection with preceeding datas obtained on pituitary gland and thyroid in Salmo salar L. during »smoltification«. They are characterized by a definite secretory and excretory activity of fuchsinophilic cells of the middle glandular region of the pituitary gland, with a statistically significative increase of their percentage, and by a functional activation of the thyroid gland. They are confronted with experimental and clinical papers on vertebrate endocrinology. The histological and biochemical observations, in mammals as in Salmon, suggest a synergic relationship among various hormones: Corticotrophin, somatotrophin, thyroid function and adrenocortical activity. |
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