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Br J Dermatol. 1991 Sep;125(3):222-6.

Ultraviolet light induction of peripheral granulocytosis with splenomegaly: protection of mice with topical p-aminobenzoic acid (PABA).

Author information

  • 1Department of Dermatology, Ullevaal University Hospital, Oslo, Norway.

Abstract

Hairless mice were exposed to UVB irradiation from a Philips T1 12 light source. Mice that were exposed to UV-light and not protected with 5% p-aminobenzoic acid (PABA) showed a significantly higher number of peripheral blood granulocytes (P less than 0.001) and a significantly higher mean weight of both the spleen and the liver (P less than 0.001) than the non-irradiated controls. Light microscopy of the histology of the enlarged liver and spleen showed a proliferation of granulocytes and the reticuloendothelial cells. Treatment with topical PABA during the whole period of UV-exposure prevented the peripheral blood granulocytosis. These protected mice also had a significantly (P less than 0.001) lower mean weight for the liver and spleen than UV-exposed and non-protected mice.

PMID:
1911313
[PubMed - indexed for MEDLINE]
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