Jove
Visualize
Contact Us

Related Experiment Videos

[Mammalian collagenases: physiological and pathophysiological aspects].

B C Adelmann-Grill

    Arzneimittel-Forschung
    |January 1, 1982
    PubMed
    Summary

    This study explores how mammalian collagenases are regulated. Collagenases break down collagen in tissues under normal and pathological conditions. The authors review how these enzymes are made, activated, and inhibited. They emphasize the role of regulatory mechanisms at different stages. The findings suggest that collagenase activity is tightly controlled. This regulation includes synthesis of proenzymes, activation of latent enzymes, and inhibition by TIMPs. Substrate specificity for different collagen types is also a key factor. The study contributes to understanding how tissue remodeling is managed. It highlights the importance of these regulatory processes in maintaining tissue homeostasis.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Substantivity to hair and skin of l-labelled collagen hydrolysates under application simulating conditions.

    International journal of cosmetic science·2009
    Same author

    Transforming growth factor-beta controls cell-matrix interaction of microvascular dermal endothelial cells by downregulation of integrin expression.

    The Journal of investigative dermatology·1996
    Same author

    Differentiation stage and cell cycle position determine the chemotactic response of fibroblasts.

    Folia histochemica et cytobiologica·1996
    Same author

    [Pulmonary manifestations of systemic scleroderma: pathophysiologic and clinical significance of the activation of lung fibroblasts].

    Pneumologie (Stuttgart, Germany)·1995
    Same author

    Biochemical events in cervical ripening dilatation during pregnancy and parturition.

    Journal of obstetrics and gynaecology (Tokyo, Japan)·1995
    Same author

    Pathogenetic and clinical significance of fibroblast activation in scleroderma lung disease.

    Respiration; international review of thoracic diseases·1995
    JoVE
    x logofacebook logolinkedin logoyoutube logo
    ABOUT JoVE
    OverviewLeadershipBlogJoVE Help Center
    AUTHORS
    Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
    LIBRARIANS
    TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
    RESEARCH
    JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
    EDUCATION
    JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
    Terms & Conditions of Use
    Privacy Policy
    Policies

    Area of Science:

    • Enzymology within molecular biology
    • Connective tissue biology in physiological sciences
    • Matrix metalloproteinase research in pharmacology

    Background:

    Understanding how tissues break down collagen is crucial for health and disease. Prior research has shown that collagenases play roles in tissue remodeling and repair. However, the precise regulation of these enzymes remains unclear. No prior work had resolved how collagenase activity is controlled at multiple stages. This gap motivated a deeper look into the mechanisms governing collagenase behavior. Established knowledge includes the basic structure of collagenases and their involvement in tissue turnover. Yet, the interplay between synthesis, activation, and inhibition is not fully understood. This paper contributes by examining these regulatory layers in detail.

    Purpose Of The Study:

    The aim of this work is to explore the biochemical and cellular regulation of mammalian collagenases. The specific problem involves understanding how these enzymes function under normal and pathological conditions. The motivation stems from the need to clarify how collagen resorption is controlled. This study seeks to identify the mechanisms that regulate collagenase activity. It focuses on enzyme synthesis, activation, and inhibition. The goal is to determine how these processes affect collagen breakdown. By analyzing these factors, the authors aim to provide a comprehensive view of collagenase regulation. This could help in understanding tissue degradation in diseases like arthritis.

    Keywords:
    collagenase regulationtissue remodelingmatrix metalloproteinasecollagen degradation

    Frequently Asked Questions

    The authors propose that collagenase activity is regulated at synthesis, activation, and inhibition stages.

    TIMPs modulate active collagenase levels by binding to and inhibiting the enzyme.

    Substrate specificity determines which collagen types are degraded, influencing tissue remodeling.

    pH influences the activation of latent collagenase enzymes, affecting their functional state.

    Proenzyme synthesis is regulated by transcriptional and translational mechanisms.

    Related Experiment Videos

    Main Methods:

    The study reviews existing literature on collagenase biology. It examines how proenzymes are synthesized and activated. The approach includes analyzing regulatory mechanisms at different stages. The tools used are biochemical assays and cell culture techniques. The authors assess the role of inhibitors in controlling active enzymes. They also investigate substrate specificity for various collagen types. The synthesis of findings is based on prior experimental data. The review approach emphasizes regulatory interactions and their implications.

    Main Results:

    The strongest finding is that collagenase activity is tightly regulated at multiple stages. Proenzyme synthesis is controlled by transcriptional and translational mechanisms. Activation of latent enzymes is influenced by pH and proteolytic cleavage. Inhibitors like TIMPs modulate active collagenase levels. Substrate specificity varies among collagen types, affecting tissue breakdown. These results suggest that collagen resorption is a highly coordinated process. The findings highlight the importance of regulatory checkpoints. They also reveal how dysregulation may contribute to pathological conditions.

    Conclusions:

    The authors propose that collagenase regulation involves multiple layers of control. These include synthesis, activation, and inhibition mechanisms. The findings suggest that substrate specificity is a key factor in tissue remodeling. The synthesis of evidence indicates that collagenases are not constitutively active. Instead, their activity is modulated by environmental and cellular signals. The authors suggest that these regulatory mechanisms are crucial for maintaining tissue homeostasis. They also note that disruptions in these processes may lead to pathological collagen degradation. These conclusions align with the study's aim to clarify collagenase regulation.

    The authors suggest that dysregulated collagenase activity may contribute to diseases like arthritis.