Document Detail

Cytochemical studies on the cuticle and epidermis of Tubifex tubifex Müll. with special regard to the localization of polysaccharides, heavy metals and the DAB-reactivity.
MedLine Citation:
PMID:  146688     Owner:  NLM     Status:  MEDLINE    
The cuticle consits of collagenous fibres and of two types of mucopolysaccharides. The whole cuticle contain PAS-positive polysaccharides, but the acid ones are localized only in the surface zone, both in the epicuticle and in the supracuticular mucoid coat. On the surface-damaged region of the cuticle bacterial infection was observed, those intact mucoid coat may be essential in protection against bacterial infection. Microvilli of the supporting cells play significant role in repairing of cuticular injuries. Acid mucopolysaccharides of the cuticle and epidermis may function as traps for heavy metals, proved by their significant heavy metal content. The cytosol of the epidermal cells possess considerable DAB-reactivity. The enzyme, responsible for the DAB-reaction, may be transported by the microvilli towards the cuticular surface and can play central role in the detoxication of organic foreign compounds.
E Fischer; I Horváth
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Histochemistry     Volume:  54     ISSN:  0301-5564     ISO Abbreviation:  Histochemistry     Publication Date:  1977 Dec 
Date Detail:
Created Date:  1978-04-17     Completed Date:  1978-04-17     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  0411300     Medline TA:  Histochemistry     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  259-71     Citation Subset:  IM    
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MeSH Terms
3,3'-Diaminobenzidine / metabolism*
Annelida / metabolism*
Benzidines / metabolism*
Cytoplasm / metabolism
Glycosaminoglycans / metabolism*
Metals / metabolism*
Oligochaeta / metabolism*
Periodic Acid-Schiff Reaction
Skin / metabolism*,  ultrastructure
Reg. No./Substance:
0/Benzidines; 0/Glycosaminoglycans; 0/Metals; 91-95-2/3,3'-Diaminobenzidine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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