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KMID : 0381920060360020109
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Korean Journal of Microscopy
2006 Volume.36 No. 2 p.109 ~ p.118
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Study on the Physicochemical Change of Human Hair Shaft Following Radiation with Ultraviolet
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Chang Byung-Soo
Na Su-Kyung
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Abstract
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The physicochemical properties of damaged hair by irradiation of ultraviolet-B (UV-B) have been investigated by using transmission electron microscope and scanning electron microscope. The range of irradiation of hair irradiated for expectative 6 hours, 12 hours, 24 hours and 48 hours with stimulated ultraviolet ray. The treated hairs showed characteristic morphological damage pattern in the cornified cell of matrix and the cuticle following time past. The various sized vacuoles in the endocuticle of the cuticular cells was formed. The statistically significant differences in diameter of cuticular cell were observed in terms of tranverse swelling by formation of vacuoles. The hair cortex and matrix undergo long term exposure to UV-B radiation. The macrofibrils of cortex appeared to be affected most by UV-B, although the morphology and volume of melanin granule was not changed. The physicochemical destruction of hair matrix and cuticular cells is largely accelerated by long term irradiation of UV-B.
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KEYWORD
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Endocuticle, Hair, Melanin granule, Macrofibril, Ultraviolet
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