물집유사천포창, 보통천포창 및 낙엽천포창에서 Matrix Metalloproteinase-2, -3, -9의 발현에 관한 연구

전지선 ( Ji Sun Chun ),윤숙정 ( Sook Jung Yun ),김성진 ( Seong Jin Kim ),이승철 ( Seung Chul Lee ),원영호 ( Young Ho Won ),이지범 ( Jee Bum Lee ) 대한피부과학회 2009 大韓皮膚科學會誌 Vol.47 No.11

Background: Matrix metalloproteinases (MMPs) participate in extracellular matrix degradation and may play an important role in basal membrane damage in many dermatologic diseases. Recent studies implicated the importance of MMP-9 in the pathogenesis of bulla formation of bullous pemphigoid (BP). Various autoimmune bullous diseases are strongly associated with desmosome or hemidesmosome pathologies, and show an increased level of lesional MMP and exposed autoantigens from these structures. Objective: This study evaluated the level of MMP-2, -3, and -9 in three types of autoimmune bullous disease [BP, pemphigus vulgaris (PV), pemphigus foliaceus (PF)] with the aim of investigating the role of MMPs in the pathogenesis of autoimmune bullous diseases. Methods: Sample specimens were obtained from skin lesions of patients with BP (n=12), PV (n=10), and PF (n=12), and from normal controls (n=8). The immunohistochemical expression of MMP-2, -3, and -9 was analyzed and serum levels of MMP-2, -3, and -9 were measured by enzyme-linked immunosorbant assay (ELISA). The results were analyzed with reference to graded levels of clinical severity. Results: Expression of dermal MMP-2, -3, and -9 were increased in BP, PV, and PF (p=0.036, 0.022, and 0.015, respectively). However, decreased expression of the three MMPs in the epidermis of skin lesions may have resulted from epidermal destruction. ELISA-determined serum levels of MMP-2, -3, and -9 increased in BP, PV and PF. Interestingly, MMP-2 was significantly increased in the sera of BP patients (p=0.015), consistent with the previous studies concerning the role of gelatinase (MMP-2 and -9) in the pathogenesis of BP. In BP patients, clinical severity was proportional to increased levels of MMP-2 in both skin lesions and and sera. Conclusion: The increased expression of MMP-2, -3, and -9 in skin lesions and sera may reflect the involvement of these enzymes in the mechanism of bulla formation in autoimmune bullous diseases including BP. In addition, expression of MMP and clinical severity may be closely connected. (Korean J Dermatol 2009;47(11):1261~1266)

최근 20년(1987∼2006)간 광주, 전남 지역에 발생한 피부 악성 종양 1,430예에 관한 통계적 고찰

전지선 ( Ji Sun Chun ),윤숙정 ( Sook Jung Yun ),이지범 ( Jee Bum Lee ),김성진 ( Seong Jin Kim ),원영호 ( Young Ho Won ),이승철 ( Seung Chul Lee ) 대한피부과학회 2009 大韓皮膚科學會誌 Vol.47 No.6

Background: The incidence of cutaneous malignant tumors has recently markedly increased due to the increased longevity of life, along with the changes of social and environmental factors. However, few articles have reported on these changes, from a statistical aspect, of malignant skin tumors in Gwangju City and Chonnam Province. Objective: Our purpose was to clarify the recent trends and changes in the incidence and clinical patterns of cutaneous malignant tumors observed in Gwangju City and Chonnam Province and to compare them with the previously reported data. Methods: A total of 1,430 cases were pathologically diagnosed as cutaneous malignant tumor during a 20 year period between January 1987 and December 2006 at the Department of Dermatology in Chonnam National University Hospital. The tumor incidence and its changes, the age and gender distribution and the anatomical sites were investigated. Results: The average annual incidence of cutaneous malignant tumors among the total number of outpatients was 1.4±0.5%. The incidence of cutaneous malignant tumors increased with time in 10-year intervals, from 1±0.25% (1987∼1996) to 1.83±0.38% (1997∼2006). Among the malignant tumors, the incidence of basal cell carcinoma (BCC) was increased up to 1.14% (1997∼2006) as compared to 0.05% (1987∼1996). The most common tumor among the 1,430 patients with cutaneous malignant tumor was BCC (58.96%), followed by squamous cell carcinoma (SCC) (17.58%), malignant melanoma (MM) (10.01%), metastatic carcinoma (3.57%) and malignant lymphoma (3.01%). The mean age of onset of the patients who were diagnosed with cutaneous malignant tumors was 63.64 years old (males: 62.23, females: 63.61) in this study. There was a similar incidence of malignant skin tumors between the males and females (1:1.04). The most common site for the development of malignant skin tumors were the head and neck where 94.54% of the BCCs and 63.3% of SCCs developed. The nose (33.02%) was the most preferential site for BCC, followed by the cheek (20.72%). SCC most frequently developed in the cheek (20.72%), followed by the lower lip (10.76%). The most frequent site for the development of MM was the sole and heel (36.37%) rather than the head and neck (14.7%). Conclusion: The total number of patients and the incidence of malignant skin tumors have gradually increased in the area of Gwangju City and Chonnam Province. Especially, BCC has markedly increased and this is mainly due to the increment of aged people in this area, along withsocial and environmental factors. (Korean J Dermatol 2009;47(6):667∼673)

백반증에서 표피내 Peroxiredoxin 1의 발현

전근 ( Gen Quan ),박미선 ( Mei Shan Piao ),최지영 ( Jee Young Choi ),전지선 ( Ji Sun Chun ),이지범 ( Jee Bum Lee ),이승철 ( Seung Chul Lee ) 대한피부과학회 2008 大韓皮膚科學會誌 Vol.46 No.6

Background: Although the pathogenesis of vitiligo isn`t fully understood, a recent study demonstrates that oxidative stress plays an important role to induce vitiligo. Peroxiredoxin (Prx) is a novel peroxidase family to remove hydrogen peroxide using thioredoxin system, which is consisted of thioredoxin, thioredoxin reductase, and NADPH. Objective: This study aimed to investigate the change of expression of Prx I to elucidate the role of oxidative stress in the pathogenesis of vitiligo. Methods: Sample specimens were obtained from the lesional skin of vitiligo patients, and non-depigmented skin was obtained from the perilesional area as control samples. The skin samples were immediately frozen using liquid nitrogen, and then section samples were prepared to perform immunohistochemical staining with antibodies for Prx I. Some of the skin biopsy samples were used for primary culture of keratinocytes. Protein extracts from the expanded keratinocytes were prepared for Western blot analysis of Prx I. Results: In vitiligo, the ubiquitous expression of Prx I in all layers of epidermis, which was also observed in the normal perilesional skin, was reduced in the depigmented lesion of vitiligo patients. The reduction of Prx I was remarkable from the lesions which were exposed to sunlight. Consistently, Prx I expression from the lesional keratinocytes were noticeably reduced in comparison with that from perilesional keratinocytes. Conclusion: Our results showing that Prx I is impaired in the epidermis of depigmented lesions of vitiligo patients suggest that oxidative stress is an important factor to induce vitiligo. (Korean J Dermatol 2008;46(6):736∼741)

제주도 숨은물벵뒤 습지 서식 Betaproteobacteria의 종다양성 및 신분류군 분포

신영민 ( Young Min Shin ),김태의 ( Tae Ui Kim ),최아영 ( Ah Young Choi ),전지선 ( Jee Sun Chun ),이상훈 ( Sang Hoon Lee ),김하늘 ( Ha Neul Kim ),이하나 ( Ha Na Yi ),조재형 ( Jae Hyung Jo ),조장천 ( Jang Cheon Cho ),장광엽 ( Kwang 한국환경생물학회 2011 환경생물 : 환경생물학회지 Vol.29 No.3

The species diversity of Betaproteobacteria in the Sumunmulbengdui Wetland Area of Jeju Island was studied using culture based techniques, and candidates for novel taxa were screened. Twenty two novel bacterial strains belonging to Betaproteobacteria were isolated, which could be assigned to 16 genera of 4 families, namely Burkholderiaceae (3 strains), Comamonadaceae (8 strains), Oxalobacteraceae (5 strains), Neisseriaceae (5 strains), and an unassigned group belonging to Burkholderiales (1 strain) based 16S rRNA gene sequences. The genus Chromobacterium contained three candidates of novel species, and each of the genera Burkholderia, Comamonas, Pelomonas and Herbaspirillum contained two candidates respectively. Through the analysis of membrane fatty acid profiles and physiological properties using API 20NE as well as morphological and cultural properties, each of the isolates was found to form potentially novel species. Brief description of 22 potential candidates for new species or subspecies is given accordingly.