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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Increased expression of nerve growth factor receptor and neural endopeptidase in the lesional skin of melasma.
Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [et Al.] 2009 August
BACKGROUND: Characteristic clinical features of melasma are symmetry of hyperpigmentation and distribution related to trigeminal nerves, which suggest that the neural involvement could play a part in the pathogenic mechanisms of pigmentation.
OBJECTIVE: To evaluate whether some neuropeptides and neurotrophins and their receptors were associated with the pathogenesis of melasma.
METHODS: To investigate the involvement of neuronal system and neuropeptides in melasma, we examined the expression of nerve growth factor receptor (NGFR) and neural endopeptidase (NEP) in melasma lesional and nonlesional skin. Skin biopsies were obtained from lesional and nonlesional facial skin of six Korean women with melasma. Confocal laser scanning microscopic examination and western blot were performed.
RESULTS: Melasma lesions showed markedly greater expression of NGFR and NEP than nonlesional skin.
CONCLUSION: We suggest that neuroactive molecules, including NGF, is one of the critical factors for the pathogenesis of melasma, which may directly affect the microenvironment around melanocytes through a NGFR immunoreactivity (NGFR-IR) nerve fiber pathway, and higher levels of NEP in melasma has an important role in regulation of melanogenesis.
OBJECTIVE: To evaluate whether some neuropeptides and neurotrophins and their receptors were associated with the pathogenesis of melasma.
METHODS: To investigate the involvement of neuronal system and neuropeptides in melasma, we examined the expression of nerve growth factor receptor (NGFR) and neural endopeptidase (NEP) in melasma lesional and nonlesional skin. Skin biopsies were obtained from lesional and nonlesional facial skin of six Korean women with melasma. Confocal laser scanning microscopic examination and western blot were performed.
RESULTS: Melasma lesions showed markedly greater expression of NGFR and NEP than nonlesional skin.
CONCLUSION: We suggest that neuroactive molecules, including NGF, is one of the critical factors for the pathogenesis of melasma, which may directly affect the microenvironment around melanocytes through a NGFR immunoreactivity (NGFR-IR) nerve fiber pathway, and higher levels of NEP in melasma has an important role in regulation of melanogenesis.
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