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Arch Dermatol Res. 1993;285(7):379-84.

Lymphocyte infiltration of the skin in transgenic mice carrying the human interleukin-2 gene.

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  • 1Department of Dermatology, Keio University School of Medicine, Tokyo, Japan.


Inflammatory lesions of the skin such as erythema, depigmentation and hair loss were observed in C57/BL6(B6) transgenic mice that carried an intact human genomic interleukin-2 gene (gIL-2 transgenic mice). Accumulation of T lymphocytes in the perivascular and periadnexal areas of the dermis was the first change, followed by dermal papillary oedema, which occurred before the development of macroscopic skin lesions. In 3- or 4-week-old transgenic mice with slight erythema and depigmentation of the skin, there was an increase in the number of perivascular lymphocytes accompanied by the diffuse infiltration of neutrophils and monocytes in the damaged skin. These morphological skin changes were not observed in non-transgenic mice, which were bred together with transgenic litter mates. These findings suggest that lymphocyte infiltration of the perivascular space of the skin is a primary event of exogenously introduced human interleukin-2 gene, resulting in secondary cutaneous changes in gIL-2 transgenic mice.

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