| Autor: |
Higaki, Yuko, Yamada, Osamu, Okamura, Takamitsu, Mizoguchi, Hideaki, Kawashima, Makoto |
| Zdroj: |
Dermatology; February 2001, Vol. 202 Issue: 2 p94-98, 5p |
| Abstrakt: |
Background:Skin lesions from graft-versus-host disease (GVHD) show histological features of epidermal cell death with lymphocyte infiltration. Perforin and granzyme B are involved in the process of apoptosis induced by cytotoxic T lymphocytes (CTL). Objective:To elucidate the role of CTL in the mechanism of epidermal injury in GVHD. Methods:We studied immunohistochemical staining for granzyme B and perforin in the skin lesions of 8 patients who developed GVHD after bone marrow transplantation. Results:Granzyme-B-positive lymphocytes were CD8 positive and were observed in the epidermis of 3 out of 6 specimens in acute GVHD, and of 5 specimens of chronic GVHD except for 1 sclerotic type in which it was negative. Perforin-positive lymphocytes were observed in the epidermis of the specimens from 1 acute and 1 chronic GVHD. Conclusions:Granzyme B derived from CTL may be involved in the mechanisms of epidermal injury in GVHD. |
| Databáze: |
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