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Related Experiment Video

Updated: Jun 19, 2026

Measurement of Heme Synthesis Levels in Mammalian Cells

Measurement of Heme Synthesis Levels in Mammalian Cells

Published on: July 9, 2015

SIGNIFICANCE OF THE HEMOSIDEROSIS OF PERNICIOUS ANEMIA.

P D McMaster¹, P Rous, L C Larimore

¹Laboratories of The Rockefeller Institute for Medical Research.

The Journal of Experimental Medicine

|October 30, 2009

Summary

This summary is machine-generated.

Pernicious anemia siderosis does not indicate portal hemolysis. Subcutaneous free hemoglobin introduction causes similar liver siderosis, suggesting non-hemolytic origins for pernicious anemia iron deposition.

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Area of Science:

Hematology
Pathology
Physiology

Background:

Pernicious anemia is characterized by hemosiderin deposition in the liver.
The origin of this iron deposition has been debated, with some suggesting a hemolytic cause in the portal region.

Purpose of the Study:

To investigate the cause of hemosiderin deposition in pernicious anemia.
To determine if portal region hemolysis is responsible for liver siderosis in pernicious anemia.

Main Methods:

Subcutaneous administration of free hemoglobin in experimental models.
Observation of hemosiderin deposition in liver and kidneys following hemoglobin administration.

Main Results:

Repeated subcutaneous introduction of small amounts of free hemoglobin resulted in liver siderosis identical to that seen in pernicious anemia.
Larger amounts of hemoglobin led to renal pigmentation comparable to or exceeding hepatic pigmentation.

Conclusions:

Selective liver hemosiderin deposition in pernicious anemia does not prove a hemolytic cause in the portal region.
The findings support the hypothesis that siderosis in pernicious anemia may result from systemic hemoglobin introduction rather than localized hemolysis.