Related Experiment Video
Updated: May 28, 2026

Subcutaneous Angiotensin II Infusion using Osmotic Pumps Induces Aortic Aneurysms in Mice
Published on: September 28, 2015
[Pathophysiology and advances in the treatment of Hereditary Angioedema]
Andrea Aída Velasco-Medina1, Guillermina Cortés-Morales, Adriana Barreto-Sosa
1Servicio de Alergia e Inmunología Clínica, Hospital General de México. O.D.
Insights
Hereditary angioedema (HAE) is a genetic disorder causing swelling due to a C1 inhibitor enzyme defect. Treatments aim to manage bradykinin, the key mediator, offering new therapeutic avenues.
Area of Science:
- Genetics
- Immunology
- Pharmacology
Background:
- Hereditary angioedema (HAE) is an autosomal dominant disorder.
- It results from a deficient or dysfunctional C1 inhibitor enzyme.
- Bradykinin is the primary mediator of HAE attacks.
Purpose of the Study:
- To review the pathophysiology of hereditary angioedema.
- To discuss the different types and clinical manifestations of HAE.
- To summarize current and emerging treatment strategies for HAE.
Main Methods:
- Literature review of hereditary angioedema.
- Analysis of disease mechanisms and mediators.
- Overview of therapeutic interventions.
Main Results:
- HAE presents with recurrent angioedema, potentially affecting the periphery, GI tract, or larynx.
- Three main types of HAE exist, linked to C1 inhibitor levels, function, or Factor XII gene alterations.
- Various treatments are available, including enzyme replacement and bradykinin pathway inhibitors.
Conclusions:
- Understanding HAE pathophysiology is crucial for effective management.
- Targeting bradykinin production or its B2 receptor represents a significant advancement in HAE therapy.
- Personalized treatment approaches are essential for managing this rare genetic disease.
Abstract:
Hereditary angioedema is an autosomic dominant disease, caracterized by recurrent angioedema and caused by a defective enzime known as C1 inhibitor. The main mediator involved in the development of angioedema is bradikynin. There are three types of the disease, the first one related to a decrease in the production of the enzime, the second one caracterized by an altered function of the enzime and the third one due to an altered factor XII gene. The recurrent angioedema may be localized in the periphery, in the gastrointestinal system or laryngeal, the last one being life threatening. For its treatment there are a lot of drugs available, such as attenuated androgens, fresh frozen plasma, tranexamic acid or the enzime substitution by a C1 inhibitor concentrate purified from plasma, nanofiltered or recombinant. Recently, treatment has been directed toward the avoidance of baradykinin production or its action through its B2 receptor.
Related Concept Videos
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Angina IV: Management
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...
Heart Failure V: Medical Management
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
Cytotoxic Edema: Pathophysiology
