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21. Immunohematologic disorders.

Deepa H Trivedi1, James B Bussel

  • 1Weill Medical College of Cornell University and New York Presbyterian Hospital, 525 E. 67th Street, New York, NY 10031, USA.

The Journal of Allergy and Clinical Immunology
|February 20, 2003
PubMed
Summary
This summary is machine-generated.

Immunohematologic disorders involve immune reactions causing blood cell deficiencies like hemolytic anemia, thrombocytopenia, and neutropenia. These conditions arise from various immune system dysfunctions and can affect fetuses and newborns.

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Area of Science:

  • Hematology
  • Immunology
  • Pathology

Background:

  • Immunohematologic disorders are characterized by immune-mediated damage to blood cells.
  • These disorders commonly manifest as cytopenias, including hemolytic anemia, thrombocytopenia, and neutropenia.

Purpose of the Study:

  • To provide a comprehensive overview of immunohematologic disorders.
  • To elucidate the underlying immune mechanisms driving these conditions.
  • To discuss clinical manifestations and specific scenarios like fetal/neonatal cytopenias and transfusion reactions.

Main Methods:

  • Literature review of immunohematologic disorders.
  • Analysis of immune mechanisms including autoimmunity, immunodeficiency, and alloantibody formation.
  • Categorization of clinical presentations and etiological factors.

Main Results:

  • Immune reactions are the primary cause of hematologic diseases, particularly cytopenias.
  • Mechanisms include systemic autoimmunity, immunodeficiency, drug reactions, and transplacental alloantibody transfer.
  • Antibodies to clotting factors and transfusion reactions represent other significant immune-related hematologic events.

Conclusions:

  • Immunohematologic disorders encompass a diverse range of conditions stemming from immune system dysregulation.
  • Understanding these immune mechanisms is crucial for diagnosis and management.
  • These disorders have significant implications across various patient populations, from neonates to transfusion recipients.