Abstract:
BACKGROUND:Chemical peeling is one of the dermatological treatments available for certain cutaneous diseases and conditions or improvement of cosmetic appearance of photoaged skin. OBJECTIVES:We assessed the photochemopreventive effect of several clinically used chemical peeling agents on the ultraviolet (UV)-irradiated skin of hairless mice. METHODS:Chemical peeling was done using 35% glycolic acid dissolved in distilled water, 30% salicylic acid in ethanol, 10% or 35% trichloroacetic acid (TCA) in distilled water at the right back of UV-irradiated hairless mice every 2 weeks in case of glycolic acid, salicylic acid, and 10% TCA and every 4 weeks in case of 35% TCA for totally 18 weeks after the establishment of photoaged mice by irradiation with UVA+B range light three times a week for 10 weeks at a total dose of 420 J/cm(2) at UVA and 9.6 J/cm(2) at UVB. Tumor formation was assessed every week. Skin specimens were taken from treated and non-treated area for evaluation under microscopy, evaluation of P53 expression, and mRNA expression of cyclooxygenase (COX)-2. Serum level of prostaglandin E(2) was also evaluated. RESULTS:All types of chemical peeling reduced tumor formation in treated mice, mostly in the treated area but also non-treated area. Peeling suppressed clonal retention of p53 positive abnormal cells and reduced mRNA expression of COX-2 in treated skin. Further, serum prostaglandin E(2) level was decreased in chemical peeling treated mice. CONCLUSIONS:These results indicate that chemical peeling with glycolic acid, salicylic acid, and TCA could serve tumor prevention by removing photodamaged cells.
journal_name
J Dermatol Scijournal_title
Journal of dermatological scienceauthors
Abdel-Daim M,Funasaka Y,Kamo T,Ooe M,Matsunaka H,Yanagita E,Itoh T,Nishigori Cdoi
10.1016/j.jdermsci.2010.08.002subject
Has Abstractpub_date
2010-10-01 00:00:00pages
21-8issue
1eissn
0923-1811issn
1873-569Xpii
S0923-1811(10)00256-2journal_volume
60pub_type
杂志文章abstract::SV-40 transformed human keratinocytes (SVHK cells) were stimulated with epidermal growth factor (EGF) and ultraviolet B (UVB) irradiation. Following the stimulation, cell growth, apoptosis, and the activities of mitogen-activated protein (MAP) kinase families were analyzed. EGF (100 ng/ml) increased SVHK cell number c...
journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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abstract:BACKGROUND:Autophagy is a highly conserved cellular catabolic pathway for degradation and recycling of intracellular components in response to nutrient starvation or environmental stress. Endoplasmic reticulum (ER) homeostasis can be disturbed by physiological and pathological influences, resulting in accumulation of m...
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journal_title:Journal of dermatological science
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abstract:BACKGROUND:Currently available topical treatments for actinic keratosis (AK) are associated with substantial side-effects. OBJECTIVES:To evaluate the efficacy and safety of topical SR-T100 gel in treating AK. METHODS:A multicenter, randomized, double-blinded phase III trial was conducted. Patients with at least two c...
journal_title:Journal of dermatological science
pub_type: 杂志文章,多中心研究,随机对照试验
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abstract::The effect of DOPA and glutathione (GSH) on enzyme systems for 5-S-cysteinyl-DOPA (5SCD) genesis in murine melanoma cells cultured in tyrosine- and cystine-free medium were studied. DOPA at its optimum concentration (10(-5) M) when added alone did not alter tyrosinase, glutathione-S-transferase or gamma-glutamyl trans...
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abstract:BACKGROUND:1 alpha,25-Dihydroxyvitamin D3 (1 alpha,25(OH)2D3), the active form of vitamin D, suppresses keratinocyte proliferation, promotes keratinocyte differentiation, and induces involucrin expression. Peroxisome proliferation-activated receptors (PPARs) are ligand-activated transcription factors. It has been repor...
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abstract:BACKGROUND:Comprehensive data regarding the epidemiology of chronic urticaria (CU) in general populations are scant. OBJECTIVES:To investigate the prevalence, incidence, and comorbidities of CU in general population. METHODS:The data were sourced from the National Health Insurance Research Database (NHIRD) for 2009-2...
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abstract:BACKGROUND:Pruritus and discomfort are often present in patients with xerosis and atopic dermatitis. Several studies suggest an important role of diet in skin pathophysiology. OBJECTIVE:This study evaluated the effect of dietary fatty acids in the skin physiology via an itch-related animal model with and without suppl...
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pub_type: 杂志文章
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更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:Strategies combining anti-vascular therapy and vascular imaging may facilitate the prediction of early response and outcome in cancer treatment. OBJECTIVE:The aim of this study was to investigate the relationship between the tumor-associated vasculature in melanoma and to develop an approach for melanoma tr...
journal_title:Journal of dermatological science
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abstract::Examining damage (inactivation) of antioxidant enzymes in the cells and the pattern of recovery after a single UV exposure might be a useful method for analyzing the mechanisms of chronic UV irradiation, because chronic UV irradiation means repeated single exposures. We irradiated human skin fibroblasts with a single ...
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
pub_type: 杂志文章
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更新日期:2012-08-01 00:00:00
abstract::We have developed a new cell culture system which is of benefit for the research of dermal-epidermal interaction. In this system, normal human keratinocytes are cultured on the upper surface of a permeable collagen membrane, on the undersurface of which human fibroblasts are simultaneously and separately cultured in a...
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pub_type: 杂志文章
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