Annals of dermatology · 2016
Expression of Epidermal c-Kit+ of Vitiligo Lesions Is Related to Responses to Excimer Laser.
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Park Oun Jae, Han Ji Su, Lee Sang Hyung, Park Chan-Sik, Won Chong Hyun, Lee Mi Woo, Choi Jee Ho, Chang Sung Eun
Аннотация
BACKGROUND: The survival and growth of melanocytes are controlled by the binding of stem cell factor to its cell surface receptor c-kit+ (CD117). We have observed that c-kit+ melanocytes existed in some lesions of vitiligo, while Melan A+ cells were absent.
OBJECTIVE: To verify possible relation between c-kit+ expression and treatment response in non-segmental vitiligo lesions.
METHODS: Skin biopsies were done from the center of the 47 lesions from the 47 patients with non-segmental vitiligo. Expression of c-kit+ and Melan A, and amounts of melanin in the epidermis were assessed in each lesion, and treatment responses to excimer laser were evaluated.
RESULTS: Thirty-five of the 47 lesions (74.5%) had c-kit+ phenotypes. There was significant difference of c-kit staining value between good responders in 3 months of excimer laser treatment (average of 24 sessions) and the others.
CONCLUSION: c-Kit expression in vitiliginous epidermis may be related to better treatment responses to excimer laser.
OBJECTIVE: To verify possible relation between c-kit+ expression and treatment response in non-segmental vitiligo lesions.
METHODS: Skin biopsies were done from the center of the 47 lesions from the 47 patients with non-segmental vitiligo. Expression of c-kit+ and Melan A, and amounts of melanin in the epidermis were assessed in each lesion, and treatment responses to excimer laser were evaluated.
RESULTS: Thirty-five of the 47 lesions (74.5%) had c-kit+ phenotypes. There was significant difference of c-kit staining value between good responders in 3 months of excimer laser treatment (average of 24 sessions) and the others.
CONCLUSION: c-Kit expression in vitiliginous epidermis may be related to better treatment responses to excimer laser.