Abstract | AIMS: The perforin mediated pathway is the major pathway of cytotoxicity induced by activated T cells and natural killer cells, and may be involved in the development of pulmonary fibrosis. METHODS: RESULTS:
Perforin and granzyme B expression were upregulated in infiltrating lymphocytes in lung tissue from patients with idiopathic pulmonary fibrosis compared with normal lung parenchyma. Perforin and granzyme B expression were upregulated predominantly in infiltrating mononuclear cells after bleomycin instillation in wild-type mice. Although the development of bleomycin induced pneumopathy was not completely prevented, the pathological grade of inflammation and fibrosis, and the number of apoptotic cells in lung tissue, were significantly decreased in perforin knockout mice compared with wild-type mice. CONCLUSIONS:
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Authors | H Miyazaki, K Kuwano, K Yoshida, T Maeyama, M Yoshimi, M Fujita, N Hagimoto, R Yoshida, Y Nakanishi |
Journal | Journal of clinical pathology
(J Clin Pathol)
Vol. 57
Issue 12
Pg. 1292-8
(Dec 2004)
ISSN: 0021-9746 [Print] England |
PMID | 15563670
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Antimetabolites, Antineoplastic
- Membrane Glycoproteins
- Pore Forming Cytotoxic Proteins
- RNA, Messenger
- Bleomycin
- Perforin
- Granzymes
- Gzmb protein, mouse
- Serine Endopeptidases
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Topics |
- Animals
- Antimetabolites, Antineoplastic
- Apoptosis
(immunology, physiology)
- Bleomycin
- Cytotoxicity, Immunologic
(immunology, physiology)
- Disease Models, Animal
- Granzymes
- Immunohistochemistry
(methods)
- In Situ Nick-End Labeling
(methods)
- Killer Cells, Natural
(immunology)
- Lung Diseases
(immunology, physiopathology)
- Membrane Glycoproteins
(analysis, physiology)
- Mice
- Mice, Knockout
- Perforin
- Pore Forming Cytotoxic Proteins
- Pulmonary Fibrosis
(chemically induced, immunology, physiopathology)
- RNA, Messenger
(analysis)
- Serine Endopeptidases
(analysis)
- T-Lymphocytes, Cytotoxic
(immunology)
- Up-Regulation
(immunology, physiology)
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