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Paroxysmal cold hemoglobinuria.

M Djaldetti1

  • 1Department of Medicine "B", Hasharon Hospital, Petah-Tiqua, Israel.

CRC Critical Reviews in Clinical Laboratory Sciences
|January 1, 1978
PubMed
Summary
This summary is machine-generated.

Paroxysmal cold hemoglobinuria (PCH) is a rare autoimmune disorder causing red blood cell destruction due to cold hemolysins. Preventing cold exposure and warming the patient remain the most effective treatments for PCH.

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Area of Science:

  • Hematology
  • Immunology
  • Autoimmune Diseases

Background:

  • Paroxysmal cold hemoglobinuria (PCH) is a rare autoimmune hemolytic anemia.
  • Characterized by the presence of cold hemolysins causing red blood cell destruction upon cold exposure.

Purpose of the Study:

  • To review the clinical and hematological features of PCH.
  • To discuss the mechanisms of red blood cell destruction in PCH.
  • To outline the differential diagnosis between PCH and cold hemagglutinin disease (CHD).

Main Methods:

  • Review of case reports from 24 patients with PCH.
  • Discussion of electron microscope and biochemical studies.
  • Analysis of immunological properties of Donath-Landsteiner antibodies and complement function.

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Main Results:

  • Cold hemolysins are the primary cause of red cell destruction in PCH after cold exposure.
  • Red cell membrane alterations may also contribute to hemolysis.
  • The Donath-Landsteiner antibody and complement play roles in the cold and warm phases of the reaction.

Conclusions:

  • Warming the patient and preventing cold exposure are the most effective treatments for PCH.
  • Further research into treatment strategies beyond supportive care is warranted.