THE DEGENERATION AND REGENERATION OF THE ADRENAL CORTEX IN THE CAT AFTER INJURY
- VernacularTitle:猫的肾上腺皮质损伤后的再生及变性
- Author:
Chiakuei MU
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1953;0(01):-
- CountryChina
- Language:Chinese
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Abstract:
The adrenal cortex of 11 adult cats of both sexes were partially removedand the mode of their degeneration and regeneration was studied. The regenera-tion began from the peripheral glomerulosa in form of bands protruding into thewound. The newly formed glomerulosal layer would give rise to the fasciculataand successively the reticularis. When the glomerulosa alone was injured or re-moved, such as in the shallow part of the wound, the fasciculata inside remain-ed healthy and came in direct contact with the regenerated capsule. Similarly,when the fasciculata degenerated, the reticularis still remained intact. In view of these findings, it is concluded that the cells of the superficiallayer may proliferate and give rise to cells in the deeper layers during regenera-tion. Once the zones are well differentiated each of them is maintained as anindependent unit, as there is no degeneration of inner zones following the removalof outer zones. Previous hypotheses of cellular migration or zonation formulatedby various authors are discussed. Since there was no transitional form betweenthe capsular cells and the cells of fasciculata, the hypothesis that glomerulosalcells originated from the capsule is denied. Although some glomerulosal cells wereseen in the substance of the capsule in certain sections, they were found, whentraced in serial sections, to be a protrution of the neighbouring glomerulosallayer. Extracellular pigments were found in the early stages of the wound butin the later stages pigments were found only inside the cells. The pigmentcells, therefore, are believed to be macrophage in nature.
