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Updated: Jun 25, 2026
12:23
Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Heparin-induced skin lesions
1Department of Laboratory Medicine, Hamilton Civic Hospitals General Division, Ontario, Canada.
British Journal of Haematology
|February 1, 1996
Summary
Heparin-induced skin lesions consistently involve IgG antibodies that activate platelets. This antibody formation occurs even without thrombocytopenia, indicating a broader role in heparin-related complications.
Area of Science:
- Immunology
- Hematology
- Dermatology
Background:
- Heparin-induced skin lesions are a known complication of heparin therapy.
- The role of heparin-dependent antibodies in these lesions, particularly in the absence of thrombocytopenia, requires further clarification.
Purpose of the Study:
- To investigate the presence and significance of heparin-dependent, platelet-activating IgG in patients with heparin-induced skin lesions.
- To determine if this antibody formation correlates with the development of thrombocytopenia or other thrombotic complications.
Main Methods:
- Sera from six patients with heparin-induced skin lesions were tested.
- Assays were performed to detect heparin-dependent, platelet-activating IgG.
- Clinical data regarding thrombocytopenia and thrombotic events were analyzed.
Main Results:
- All six patients demonstrated potent heparin-dependent, platelet-activating IgG in their sera.
- Only two patients developed thrombocytopenia, and both experienced thrombotic complications.
- One patient without thrombocytopenia developed adrenal hemorrhagic infarction, a complication associated with heparin-induced thrombocytopenia.
Conclusions:
- Heparin-dependent, platelet-activating IgG is a consistent finding in patients with heparin-induced skin lesions.
- The presence of this antibody is not solely dependent on the development of thrombocytopenia.
- These antibodies may play a role in heparin-induced skin lesions and associated complications, even without significant platelet reduction.
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