International Archives of Allergy and Immunology

Original Paper

Eosinophil Peroxidase Deficiency in New Zealand White Mice

Ohmori J.a · Tokunaga H.a · Ezaki T.a · Maruyama H.b · Nawa Y.b

Author affiliations

aDepartment of Anatomy, Kumamoto University School of Medicine, Kumamoto, and bDepartment of Parasitology, Miyazaki Medical College, Miyazaki, Japan

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Int Arch Allergy Immunol 1996;111:30–35

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: December 15, 1995
Accepted: February 19, 1996
Published online: September 04, 2009
Issue release date: 1996

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: https://www.karger.com/IAA

Abstract

Eosinophil peroxidase (EPO) is one of the granule enzymes in the eosinophil-specific granules and is distinct from myeloperoxidase. Here we report that peroxidase activity was absent in eosinophils of New Zealand White (NZW) mice. When NZW, New Zealand Black and their F, mice were treated with cyclophosphamide followed by Toxocara canis infection, the kinetic changes in the number of eosinophils in peripheral blood, determined by counting in Hinkelman’s diluting fluid, were almost comparable among the three strains. However, when their blood films were stained for peroxidase reaction, eosinophils of NZW mice, but not of the other strains, lacked EPO activity, though their specific granules were stained by eosin Y Sudan black staining for phospholipid was also negative in eosinophils of NZW mice. EPO deficiency in NZW eosinophils was further confirmed by electron-microscopic observations and by measuring EPO activity in the extracts of eosinophil-rich cell suspensions. These results indicate that NZW eosinophils share most of the features with human EPO-deficient eosinophils, suggesting that the NZW mouse is a murine counterpart of human EPO deficiency.

© 1996 S. Karger AG, Basel




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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: December 15, 1995
Accepted: February 19, 1996
Published online: September 04, 2009
Issue release date: 1996

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: https://www.karger.com/IAA


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