Document Detail

Origin, structure, composition and age-dependence of mineralized dense bodies (concretions) in the midgut epithelium of the adult housefly, Musca domestica.
MedLine Citation:
PMID:  898179     Owner:  NLM     Status:  MEDLINE    
The epithelial cells of the midgut in 1-40 day old adult female houseflies were examined by electron microscopic X-ray microalnalytic and histochemical techniques in order to study the mode of genesis, chemical nature and age-associated distribution of dense bodies. Dense bodies contain high concentration of phosphorus sulphur, chlorine, calcium, iron and copper; they are therfore termed concretions. Concretionary material is initially deposited within Golgi vesicles, lamellar bodies and residual bodies. The average size of the concretion granules and the concentration of the sequestered material increases with age, while new concretions are continually formed throughout life. With advancing age, concretions accumulate in the epithelial cells and occupy a considerable proportion of the cytoplasm in old flies. It is postulated that the concretions sequester superfluous minerals and may play an important role in the excretory system of the adult housefly.
R S Sohal; P D Peters; T A Hall
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Tissue & cell     Volume:  9     ISSN:  0040-8166     ISO Abbreviation:  Tissue Cell     Publication Date:  1977  
Date Detail:
Created Date:  1977-10-20     Completed Date:  1977-10-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0214745     Medline TA:  Tissue Cell     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  87-102     Citation Subset:  IM    
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MeSH Terms
Acid Phosphatase / metabolism
Age Factors
Calcium / analysis
Chlorine / analysis
Copper / analysis
Cytoplasmic Granules / analysis,  ultrastructure
Epithelium / enzymology,  ultrastructure
Houseflies / enzymology,  ultrastructure*
Intestines / enzymology,  ultrastructure
Iron / analysis
Phosphorus / analysis
Sulfur / analysis
Reg. No./Substance:
7439-89-6/Iron; 7440-50-8/Copper; 7440-70-2/Calcium; 7704-34-9/Sulfur; 7723-14-0/Phosphorus; 7782-50-5/Chlorine; EC Phosphatase

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

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