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Acquired angioedema.

Marco Cicardi1, Andrea Zanichelli

  • 1Dipartimento di Scienze Cliniche "Luigi Sacco" Università di Milano, Milano Italy, Ospedale L,Sacco Milano, Italy. marco.cicardi@unimi.it.

Allergy, Asthma, and Clinical Immunology : Official Journal of the Canadian Society of Allergy and Clinical Immunology
|July 30, 2010
PubMed
Summary
This summary is machine-generated.

Acquired angioedema (AAE) results from C1 inhibitor deficiency, causing bradykinin-mediated swelling. Treatments focus on acute attack management and prophylaxis to prevent recurrent, life-threatening angioedema episodes.

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Area of Science:

  • Immunology
  • Complement System
  • Vascular Biology

Background:

  • Acquired angioedema (AAE) involves C1 inhibitor deficiency, complement hyperactivation, and bradykinin release.
  • AAE presents with recurrent, unpredictable edema of skin, GI tract, and airways, often linked to lymphoproliferative disorders.
  • Autoantibodies against C1 inhibitor are common in AAE patients.

Purpose of the Study:

  • To outline the pathophysiology of acquired angioedema.
  • To discuss current therapeutic strategies for acute attacks and prophylaxis.
  • To highlight the importance of managing associated conditions.

Main Methods:

  • Review of existing literature on AAE pathophysiology and treatment.
  • Analysis of clinical presentations and therapeutic outcomes.
  • Synthesis of information on diagnostic and management approaches.

Main Results:

  • AAE pathophysiology involves complement and contact-kining system dysregulation.
  • Acute attacks managed with C1-INH, ecallantide, or icatibant.
  • Prophylaxis includes antifibrinolytics and androgens; antifibrinolytics show better results.

Conclusions:

  • Effective AAE management requires addressing acute symptoms and preventing recurrences.
  • Treatment selection depends on individual patient response and disease severity.
  • Managing underlying conditions may resolve AAE in some cases.