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Related Experiment Videos

Cathepsin D activity in isolated odontoblasts.

A Linde, B Persliden

    Calcified Tissue Research
    |May 31, 1977
    PubMed
    Summary
    This summary is machine-generated.

    An acid proteinase, identified as cathepsin D, was found in rat incisor predentine. This enzyme may play a role in the calcification process by degrading proteoglycans and glycosaminoglycans.

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    Area of Science:

    • Biochemistry
    • Dental Research
    • Enzymology

    Background:

    • Odontoblasts are crucial for dentin formation.
    • Predentine composition and its role in mineralization are not fully understood.
    • Enzymes in predentine may influence dentinogenesis.

    Purpose of the Study:

    • To identify acid proteinases in isolated odontoblast-predentine material.
    • To investigate the potential role of these enzymes in dentin calcification.
    • To characterize the identified enzyme.

    Main Methods:

    • Isolation of odontoblast-predentine material from rat incisors.
    • Enzyme activity assays to detect acid proteinase.
    • Enzyme identification and characterization.

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    Main Results:

    • High acid proteinase activity was detected in the isolated material.
    • The enzyme was identified as cathepsin D (EC 3.4.23.5).
    • The findings suggest cathepsin D is present during active dentin formation.

    Conclusions:

    • Cathepsin D is present in rat incisor predentine.
    • The enzymatic degradation of proteoglycans and glycosaminoglycans by cathepsin D may be significant for dentin calcification.
    • Further research is needed to elucidate the precise role of cathepsin D in mineralization.