ISSN:
1432-0878
Keywords:
Enamel
;
Ameloblasts
;
Colchicine
;
Lysosomes
;
Resorption
;
Rat (Sprague-Dawley)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The lysosomal systems in maturation-ameloblasts affected by colchicine were examined using trimetaphosphatase cytochemistry. Demineralized segments of rat incisor were incubated for trimetaphosphatase. At all time intervals, lysosomal structures exhibited reduced enzyme reactivity and were clustered in the Golgi region of the cell. Both ruffle-ended and smooth-ended ameloblasts maintained essentially normal morphology up to 4 h after colchicine injection, except for some migration of organelles. After 8 h, the ruffled border was markedly modified and the associated dense granular material was no longer present. Changes in the lysosomal system and ruffled border indicate interference by colchicine with a putative resorptive function of the maturation-ameloblasts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00297237
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