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민준홍 ( Joon Hong Min ),서현민 ( Hyun Min Seo ),이현주 ( Heun Joo Lee ),박지혜 ( Ji Hye Park ),최종원 ( Chong Won Choi ),이가영 ( Ga Young Lee ),김원석 ( Won Serk Kim ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.2
Diffuse dermal angiomatosis is an acquired, benign vascular proliferation with poorly circumscribed, violaceous, and livedoid plaques with frequent ulceration. Histologically, there is diffuse and interstitial proliferation of CD31- positive endothelial cells and myofibroblasts within the dermis. Endothelial atypia, mitoses, and vasculitis are lacking. Here we describe a 52-year-old male who presented with erythematous and purpuric patches on the trunk and lower extremities for 2 years. Histologic examination demonstrated a dense proliferation of endothelial cells in the papillary and reticular dermis. Small vascular spaces and extravasated erythrocytes were noted. Immunohistochemical staining using anti-CD31 antibody was positive. (Korean J Dermatol 2013;51(2):144∼147)
The Photoprotective Effect of <i>S</i> -Methylmethionine Sulfonium in Skin
Kim, Won-Serk,Seo, Hyun-Min,Kim, Wang-Kyun,Choi, Joon-Seok,Kim, Ikyon,Sung, Jong-Hyuk MDPI 2015 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.16 No.8
<P><I>S</I>-Methylmethionine sulfonium (SMMS) was reported to have wound-healing effects; we therefore have investigated the photoprotective effect of SMMS in the present study. SMMS increased the viability of keratinocyte progenitor cells (KPCs) and human dermal fibroblasts (hDFs) following ultraviolet B (UVB) irradiation, and reduced the UVB-induced apoptosis in these cells. SMMS increased the phosphorylation of extracellular signal-regulated kinases (ERK), and the inhibitor of the mitogen-activated protein kinase pathway significantly decreased the SMMS-induced viability of KPCs and hDFs. In addition, SMMS attenuated the UVB-induced reactive oxygen species (ROS) generation in KPCs and hDFs. SMMS induced the collagen synthesis and reduced the matrix metalloproteinase-1 expression in UVB-irradiated hDFs. In animal studies, application of 5% and 10% SMMS before and after UVB-irradiation significantly decreased the UVB-induced erythema index and depletion of Langerhans cells. In summary, SMMS protects KPCs and hDFs from UVB irradiation, and reduces UVB-induced skin erythema and immune suppression. Therefore, SMMS can be used as a cosmetic raw material, and protect skin from UVB.</P>
고준희(Ko, Joon-Hee),이병찬(Lee, Byung-Chan),임재석(Lim, Jae-Serk),박수진(Park, Su-Jin),장서일(Chang, Seo-Il) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.10
Using GIS data of C-si as basic data when making noise map of road traffic, we estimated exactly the noise excess areas and consequently suggested the population and the area exposed to road traffic noise accurately. We made 3D noise map to assess regional distribution of noise quantitatively. The noise map consists of noise prediction model based on data base such as traffic volume and speed changes for estimating quantitatively the noise and 3D urban space model which includes locations of noise sources, 3D buildings, topography and roads. We made noise standard map according to land use conditions and compared this map to road traffic noise map, and consequently made excess noise map. Using excess noise map, we assessed areas which exceed environmental noise level standards and noise guidelines quantitatively and effectively through GIS spatial analysis, and consequently more accurate noise exposed area and noise exposed population could be estimated. To show buildings' outer walls noise exposure, we analyzed 3D urban noise distributions using 3D-analysis of GIS.