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Lipase expression in human skin.

F Jimenez-Acosta1, L Planas, N S Penneys

  • 1Department of Dermatology, University of Miami School of Medicine, Florida.

Journal of Dermatological Science
|May 1, 1990
PubMed
Summary
This summary is machine-generated.

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A new antibody targets human pancreatic lipase, aiding in diagnosing skin conditions. This lipase marker helps identify sebaceous and follicular tumors and aids in understanding lipid release in inflammatory skin diseases.

Area of Science:

  • Dermatology
  • Immunohistochemistry
  • Molecular Biology

Background:

  • Lipase is an enzyme crucial for lipid metabolism.
  • Understanding lipase expression in skin is important for diagnosing various dermatological conditions.
  • Previous studies have limited information on lipase localization in normal and diseased skin.

Purpose of the Study:

  • To investigate the immunohistochemical expression of human pancreatic lipase in normal and diseased skin.
  • To evaluate the utility of a monoclonal antibody against lipase as a diagnostic tool for skin tumors and inflammatory conditions.
  • To identify the molecular weight of lipase in pilosebaceous units.

Main Methods:

  • Immunohistochemistry was performed on formalin-fixed, paraffin-embedded skin biopsy specimens.

Related Experiment Videos

  • A monoclonal antibody against human pancreatic lipase was used.
  • Immunoblotting was employed to determine the molecular weight of lipase.

    • Main Results:

    • Lipase was detected in normal skin's sebaceous glands and hair follicle's external root sheath.
    • Lipase immunoreactivity was observed in mononuclear phagocytes in conditions involving lipid release, such as xanthomas and inflammatory fat necrosis.
    • Immunoblotting identified a major lipase protein in pilosebaceous homogenates at 42.7 kDa.

    Conclusions:

    • The anti-lipase antibody is a valuable reagent for confirming sebaceous and follicular differentiation in adnexal tumors.
    • Lipase expression in mononuclear phagocytes can indicate extracellular lipid release in inflammatory skin diseases.
    • This study provides insights into lipase's role in pilosebaceous structures and lipid metabolism in skin.