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박병건,노용관,차경,김재곤,백병주 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3
The effect of glossopharyngeal nerve transection on the taste buds of the rat vallate papilla was examined by using the method of DNA nick-end labeling (TUNEL) and standard electron microscopic technique at 1,3,5,7,9 days after denervation. In general, the number and size of taste buds decreased as more days passed after denervation. They started decreasing on day 3 post denervation. In studies using TUNEL method, TUNEL postive cells markedly increased in their numbers one day post denervation, as compared with controls. The number of apoptotic taste bud cells per taste bud profile was averaged to be 0.64 and 0.44 for day 1 and 3 post denervation, respectively, whereas it was 0.10 in controls. In electron microscopy, apoptotic cells were identified by the presence of condensed and fragmentary nuclei in a cytoplasm, which resulted in increased density. In control rats, only few apoptotic cells were found. On days 1 and 3 post denervation, nerve fibers almost disappeared from the taste buds and some apoptotic cells were apparent. On days 7 and 9 post denervation, a few taste bud cells were still present in the epithelium of the bottom of the trench wall of the vallate papilla and most of them showed apoptotic changes. The results indicate that the death of taste bud cells in normal conditions is controlled by apoptosis and the decrease and disappearance of taste buds sfter denervation is also caused by apoptosis of taste bud cells.
아동 및 청소년기의 하악각부 피질골 두께에 관한 방사선학적 연구
백병주,김미라,노용관,김문현,김재곤 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.1
The purpose of this stufy was to determine the thickness of the cortical bone at the mandibular angle in children and adolescents. The subjects were composed of 153 subjects who were 3 to 17 years of age that had not been history of bone disease or metabolic disease and no dental caries or tooth loss on mandibular molars. The subjects were divided into three age groups, group Ⅰ(preschool children) was 3 to 5 years of age and group Ⅱ (school children) was 6 to 11 years of age and froup Ⅲ (adolescence) was 12 to 17 years of age. Panoramic radiographs of these patients were collected and measurements of the thickness of the cortical bone were obtained at the mandibular angle. The average thickness of the cortical bone in the group Ⅰ was 1.01±0.18 mm in boys and 1.07±0.22 mm in girls. In the group Ⅱ was 1.23±0.18 mm inboys and 1.32±0.18 mm in girls. In the group Ⅲ was 1.60±0.23 mm in boys and 1.58±0.20 mm in girls. Statistical analyses did not reveal any significant difference was exist between the right or left side of the mandible but difference was exist between the same age groups by sex, especially in group Ⅱ (p<0.01), except in group Ⅲ. The greater thickness of cortical bone in the older age group was shown to be statistically significant. The correlation coefficient between age and the thickness of the cortical bone at the mandibular angle showed a high value of r=0.76.
노용관 ( Yong Kwan Rho ),김연진 ( Yeon Jin Kim ),안지영 ( Ji Young Ahn ),서성준 ( Seong Jun Seo ),홍창권 ( Chang Kwun Hong ),송계용 ( Kye Yong Song ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.11
Adult xanthogranuloma is nearly indistinguishable from juvenile xanthogranuloma characterized by yellow-red nodules on the skin, normal lipid findings and the proliferation of xanthomatizied histiocytes with foamy Touton cells, histologically. But unlike juvenile xanthogranuloma, there is no visceral involvement, spontaneous regression and more solitary lesions. Multiple adult xanthogranulomas are rare entities that present more spontaneous involution. Here we report a case of a 39-year-old patient with multiple xanthogranulomas which developed on the face, trunk and extremities. Diagnostic workup revealed normal lipid profile and no extracutaneous manifestations. (Korean J Dermatol 2007;45(11):1176∼117)
노용관 ( Yong Kwan Rho ),유광호 ( Kwang Ho Yoo ),김범준 ( Beom Joon Kim ),김명남 ( Myeung Nam Kim ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.9
Hodgkin`s disease (HD) is a lymphoproliferative disorder that presents as a clinically asymptomatic mass or painless lymph node swelling. Cutaneous HD is a very rare manifestation in patients with HD. A 66-year-old man complained of a maculopapular rash waxing and waning for one year. A painful mass had developed on his left axilla 7 weeks prior to presenting. The biopsy specimens of both skin and lymph node revealed Hodgkin`s lymphoma with atypical lymphoid cells and Reed-Sternberg cells. We report a case of cutaneous involvement of HD, which had been presented as a maculopapular rash for one year. (Korean J Dermatol 2008;46(9):1262~1265)
노용관 ( Yong Kwan Rho ),유광호 ( Kwang Ho Yoo ),김지영 ( Ji Young Kim ),이갑석 ( Kap Sok Li ),서성준 ( Seong Joon Seo ),홍창권 ( Chang Kwun Hong ),송계용 ( Kye Yong Song ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.12
Spindle cell lipoma is a benign, subcutaneous neoplasm typically located on the neck, back and shoulder of men. Pseudoangiomatous spindle cell lipoma is a rare variant of spindle cell lipoma that is characterized by non-vascular branching spaces. A 64-year old man presented with 2 masses on the abdomen. Although 1 tumor had a very low fat component, it could be histologically diagnosed as pseudoangiomatous spindle cell lipoma due to CD 34 positive spindle cells, ropey collagen and blood vessels. We report a case of pseudoangiomatous spindle cell lipoma on the abdomen, which was diagnostically difficult due to a scanty fat component. (Korean J Dermatol 2008;46(12):1644∼1647)