Document Detail


The origin, structure and occurrence of corpora amylacea in the bovine mammary gland and in milk.
MedLine Citation:
PMID:  688369     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Corpora amylacea were present in variable numbers in the mammary glands of 8 lactating cows but they were not observed in the glands of pregnant or virgin heifers. In primiparous cows they were relatively simple bodies composed of 2--3 concentric layers but in multiparous animals, more complex multilayered structures were also noted. Corpora amylacea were formed in alveoli lined with actively secreting cells. The initial stage of their formation involved the aggregation, fusion and compaction of casein micelles in the alveolar milk. The resulting structure acted as a nucleus for further growth which occurred by the addition of material of micellar origin to its surface. Bodies containing a large proportion of crystalline material were common. Contact of corpora amylacea with the alveolar epithelium often caused flattening or irreversible damage to the secretory cells. The corpora amylacea recovered from milk corresponded in appearance to various stages in their growth seen in the mammary gland. They were usually present in the colostrum of multiparous cows but never in that from primiparous animals. In only 1 cow was the colostrum and milk found to be consistently free of corpora amylacea.
Authors:
B E Brooker
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Cell and tissue research     Volume:  191     ISSN:  0302-766X     ISO Abbreviation:  Cell Tissue Res.     Publication Date:  1978 Aug 
Date Detail:
Created Date:  1978-11-29     Completed Date:  1978-11-29     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0417625     Medline TA:  Cell Tissue Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  525-38     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Caseins*
Cattle
Colostrum / analysis*
Female
Mammary Glands, Animal / ultrastructure*
Milk / analysis*
Pregnancy
Chemical
Reg. No./Substance:
0/Caseins

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


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