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Related Experiment Video

Updated: Nov 1, 2025

Screening Assays to Characterize Novel Endothelial Regulators Involved in the Inflammatory Response
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Screening Assays to Characterize Novel Endothelial Regulators Involved in the Inflammatory Response

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Role of Endothelial Cells in Inflammatory Processes.

Kristof Graf, Jochen Niehus, Claus R Baumgarten

    International Archives of Allergy and Immunology
    |June 25, 2021
    PubMed
    Summary

    The vascular endothelium contains all key components of the kinin-kallikrein system, suggesting a local role in regulating inflammation and vascular tone.

    Keywords:
    BradykininEndotheliumGlandular kallikreinKininogen

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    Area of Science:

    • Vascular Biology
    • Biochemistry
    • Cell Biology

    Background:

    • The kinin-kallikrein system plays a crucial role in physiological processes.
    • Its presence and function within the vascular endothelium are not fully elucidated.

    Purpose of the Study:

    • To investigate the presence and activity of the kinin-kallikrein system components in endothelial cells.
    • To determine the potential role of this system in vascular wall functions.

    Main Methods:

    • Studied human umbilical vein (HUVEC) and bovine aortic endothelial cells (BAEC).
    • Measured kinin generation using radioimmunoassay and glandular kallikrein activity via colorimetric methods.
    • Utilized immunocytochemical staining for kallikrein localization.

    Main Results:

    • Confirmed the presence of all key elements of the kinin-kallikrein system in HUVEC and BAEC.
    • Quantified glandular kallikrein activity in both cell types.
    • Demonstrated that dextran sulfate significantly reduced kinin generation.

    Conclusions:

    • The vascular endothelium possesses a local kinin-kallikrein system.
    • This system may be involved in regulating local inflammatory responses.
    • It may also contribute to the modulation of vascular tone.