Kostanecki W, Radwan I, Mroczkowski T. The effect of X-ray irradiation upon the epithelial melanin unit of the hair bulb in hooded rat.
Arch Dermatol Res 1976;
256:297-303. [PMID:
984882 DOI:
10.1007/bf00572496]
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Abstract
A marked increase in the quantity of pigment in the upper bulb, penetration of melanosomes into the papillae and vacuolisation of the bulb keratinocytes occurred as early as 4--6 h after irradiation with a dose 600--1200 R. Afterwards considerable hyperpigmentations appeared in the proximal segments of dystrophic and catagen hairs and melanin was found in the catagen columns and beyond them. In most animals within 4--6 h after irradiation occurred a distinct vacuolisation of the Malpighian layer and the granular layer became more prominent.
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