Collagen fibril ultrastructure alters after glycanolytic digestion.

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  • Author(s): Quacci D;Quacci D; Dell'Orbo C; Diaz G
  • Source:
    Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft [Ann Anat] 1992 Dec; Vol. 174 (6), pp. 569-74.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: G. Fischer Country of Publication: Germany NLM ID: 100963897 Publication Model: Print Cited Medium: Print ISSN: 0940-9602 (Print) Linking ISSN: 09409602 NLM ISO Abbreviation: Ann Anat Subsets: MEDLINE
    • Publication Information:
      Original Publication: Jena [Germany] ; New York : G. Fischer, c1992-
    • Subject Terms:
      Cartilage/*ultrastructure ; Chondroitin Lyases/*pharmacology ; Collagen/*ultrastructure ; Hyaluronoglucosaminidase/*pharmacology; Animals ; Cattle ; Nose/anatomy & histology
    • Abstract:
      Fixed fragments of bovine nasal septum cartilage were digested for six hours either with testicular hyaluronidase or streptomyces hyaluronidase or flavobacter chondroitinase ABC, and observed with a transmission electron microscope. Collagen fibril diameters (D) were measured to evaluate the effect of enzymatic digestion on the fibril size. This resulted in an increased frequency (17% to 47%) of "thin" fibrils (80 to 32 nm), followed by a decrease (65% to 31%) of the frequency of "mid" fibrils (32 to 64 nm). The frequency of "thick" fibrils (over 64 nm) showed a moderate increase (18% to 22%). Considering the relationship between fibril diameter, fibril volume and collagen content, the apparently relevant increase in number of the "thin" fibrils corresponds to an alteration of only 4% of the total collagen. On the other hand the increase of the "thick" fibrils implies a conspicuous alteration of 20% of the total collagen. The observed fibril rearrangement after digestion may be explained in terms of the wrap of matrix proteoglycans around each fibril. The enzymatic removal of the proteoglycans could make "mid" collagen fibrils free to regress into "thin" as well as to merge together into "thick" fibrils.
    • Accession Number:
      9007-34-5 (Collagen)
      EC 3.2.1.35 (Hyaluronoglucosaminidase)
      EC 4.2.2.- (Chondroitin Lyases)
    • Publication Date:
      Date Created: 19921201 Date Completed: 19930203 Latest Revision: 20191028
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/s0940-9602(11)80324-9
    • Accession Number:
      1476256