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Related Experiment Video

Updated: Apr 11, 2026

Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells

Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells

Published on: January 29, 2014

Paroxysmal cold hemoglobinuria.

Satish Shanbhag¹, Jerry Spivak¹

¹Division of Hematology, Department of Medicine, The Johns Hopkins University School of Medicine, Suite 4500, 301 building 4940 Eastern Ave, Baltimore, MD 21224, USA.

Hematology/Oncology Clinics of North America

|June 5, 2015

Summary

This summary is machine-generated.

Paroxysmal cold hemoglobinuria (PCH) is a rare autoimmune hemolytic anemia. This complement-mediated condition involves a P antigen antibody, causing red blood cell destruction, particularly in cold conditions.

Keywords:

Autoimmune hemolytic anemia Coombs negative hemolysis Donath-Landsteiner PCH Syphilis

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Area of Science:

Hematology
Immunology
Autoimmune Diseases

Background:

Paroxysmal cold hemoglobinuria (PCH) is a rare autoimmune hemolytic anemia.
It is characterized by complement-mediated intravascular hemolysis.
PCH presents acutely in children post-viral infection and chronically with malignancies or syphilis.

Purpose of the Study:

To summarize the key features of paroxysmal cold hemoglobinuria.
To highlight the underlying immunological mechanism.
To outline current treatment strategies.

Main Methods:

Review of existing literature on PCH.
Analysis of the immunological basis of PCH.
Summary of clinical presentations and treatment outcomes.

Main Results:

PCH involves a biphasic antibody targeting the P antigen on red blood cells.
The antibody mediates red blood cell lysis upon temperature change.
Hemolysis is complement-dependent and intravascular.

Conclusions:

PCH is a distinct autoimmune hemolytic anemia with a specific antibody and mechanism.
Treatment is primarily supportive, including transfusions.
Immunosuppressive therapy may be beneficial in severe or refractory cases.