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정문경 ( Mun Kyung Chung ),김용철 ( Yong Cheol Kim ),전은경 ( Eun Kyoung Jeon ),이근호 ( Keun Ho Lee ),맹이소 ( Lee So Maeng ),한제호 ( Je Ho Han ),문성대 ( Sung Dae Moon ) 대한내과학회 2008 대한내과학회지 Vol.75 No.4
하나의 부신 세포에서 피질과 수질의 특징이 함께 공존하는 피질-수질세포에 관한 예들이 1960년대 이후로 보고되어 왔다. 저자들은 갈색세포종의 임상적 특징을 보이지만, 수술 후 갈색세포종의 임상증상과 생화학적 특징이 정상으로 회복되었으며 광학현미경상 부신 피질 선종의 특징을 보이지만, 면역조직화학 검사와 전자현미경 검사에서 피질-수질세포를 보인 1예를 경험하였기에 문헌고찰과 함께 국내 처음으로 보고하는 바이다. The coexpression of cortical and medullary features in a single adrenal cortical cell has been recognized, leading to terms such as cortico-medullary cells. Here, we reported a case of adrenocortical adenoma consisting of cortico-medullary cells that clinically mimicked pheochromocytoma. A 52-year-old woman was admitted to our hospital complaining of an 8-month history of paroxysmal palpitation with refractory hypertension. A 24-hour urine study revealed increased norepinephrine and metanephrine levels. Computed tomography of the abdomen revealed a 1.0×0.9-cm mass in the left adrenal gland. The patient subsequently underwent unilateral laparoscopic adrenalectomy for a presumptive pheochromocytoma. Light microscopic findings of the left adrenal mass indicated an adrenocortical adenoma, but electron microscopy identified lipid vacuoles and smooth endoplasmic reticulum, along with dense core neurosecretory granules, so-called cortico-medullary cells. This is the first report of the detection of cortico-medullary cells in adrenocortical adenoma presenting as pheochromocytoma in Korea. (Korean J Med 75:479-483, 2008)
Lee, Ji-Young,Kim, Su Yeon,Mo, Eun-Yeong,Kim, Eun-Sook,Han, Je-Ho,Maeng, Lee-So,Lee, An-Hee,Eun, Jung Woo,Nam, Suk Woo,Moon, Sung-Dae Lychnia 2014 International journal of oncology Vol.45 No.2
<P>Mutations of the HRPT2 gene, which are responsible for hyperparathyroidism-jaw tumor (HPT-JT) syndrome, have been implicated in the development of a high proportion of parathyroid carcinomas. The aim of this study was to investigate differences in expression of the most important genes connected with parathyroid carcinoma between HPT-JT syndrome due to an HRPT2 splicing mutation, normal parathyroid tissue and sporadic parathyroid adenoma. Total RNAs were extracted from parathyroid carcinoma in HPT-JT syndrome harbouring HRPT2 splicing mutation or sporadic parathyroid adenoma and normal parathyroid gland, and subjected to Illumina DASL-based gene expression assay. Unsupervised hierarchical clustering analysis was used to compare gene expression in HPT-JT syndrome, sporadic parathyroid adenoma and normal parathyroid glands. We identified differentially regulated genes in HPT-JT syndrome and sporadic parathyroid adenoma relative to normal parathyroid glands using a combination of Welch's t-test and fold-change analysis. Quantitative PCR, RT-PCR and IHC were used for validation. Sixteen genes differentially regulated in the parathyroid carcinoma were associated with signal pathways, MAPK, regulation of actin cytoskeleton, prostate cancer and apoptosis. FGFR1 expression was confirmed to be significantly upregulated by validation experiments. Our gene expression profiling experiments suggest that upregulated FGFR1 expression appears to be associated with parathyroid carcinoma in HPT-JT syndrome due to an HRPT2 splicing mutation.</P>
導入 機器의 效率的 活用을 위한 敎授-學習 敎材의 開發 : 8 個 學科 共同 硏究
李昌甲,孟琦錫,李載元,朴萬植,廷吉煥,金鍾悟,朴景采,李英浩,李東周,邕章祐,柳盛淵,趙澤東,姜理錫,李殷雄,李興浩,金健中,韓相玉,金良模,張錫明,朴俊灝,洪鳳植,金太均,金再韓,宋海永,盧載星 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1
In this study, through the combined effort and collaboration of 8 engineering education departments, teaching-learning processes and models were reviewed, and printed and bound student manuals developed on 120 different tasks and subjects. Audio-visual supportive material, already in use in laboratories, was added to form a complete teaching-learning package. In addition to promoting the maximum use of the newly acquired equipment, this study will also contribute to the development of laboratory practice, the in-service training of technical high schools teachers and help in the development of their own instructional program.
위장관 : 급성 TNBS-유발 대장염에서 동종 골수이식에 의한 치료 효과
맹이소 ( Lee So Maeng ),장은덕 ( Eun Duck Chang ),채현석 ( Hiun Suk Chae ),김진수 ( Jin Soo Kim ),민정요 ( Jeong Yo Min ),손혜숙 ( Hye Sook Sohn ),노상영 ( Sang Young Rho ),김형근 ( Hyung Keun Kim ),조영석 ( Young Suk Cho ),최규용 대한소화기학회 2009 대한소화기학회지 Vol.54 No.1
목적: 골수에서 유래한 세포들은 여러 병적인 환경에서 조직을 유지하는 데 기여한다. 저자들은 흰쥐의 실험 대장염에서 골수 이식 시 대장염의 치료에 대해 골수유래세포들의 역할을 알아보기 위해 연구를 시행하였다. 대상 및 방법: 실험에 사용한 흰쥐는 3개의 군으로 나누어 대조군 (50% ethanol), 2,4,6-trinitrobenzene sulfinic aicd (TNBS군) 장염군, TNBS+골수이식군(BMT군)으로 하였다. 장염을 유발하기 위해 50% 알코올에 녹인 TNBS (5.0 mg/마리)를 일주일에 한 번씩 2주 동안 항문을 통해 투여하였다. 동종 골수 이식은 TNBS 투여 3주 전에 green fluorescence protein (GFP)를 지닌 수컷 유전자 도입 쥐의 골수 세포를 야생형 생쥐의 꼬리 정맥에 투여하였다. 모든 동물은 TNBS 투여 후 일주일 후에 희생하여 대장을 추출하였다. 골수이식이 되었는지를 확인하기 위해 GFP에 대한 면역조직화학검사를 시행하였고 상피하 근육섬유모세포의 존재를 확인하기 위해 vimentin과 α-SMA에 대한 면역조직검사를 시행하였다. 결과: 장염의 정도는 TNBS군에서 가장 심하였고 골수이식에 의해 유의하게 감소하였다(p<0.05). GFP 양성 세포는 주로 선와의 니쉐 부위에서 염색되었으며 골수 이식군에서만 양성이었다. 근육섬유세포에 대한 vimentin, α-SMA에 대한 염색도 주로 선와 니쉐에서 양성이었고 대조군이나 TNBS군에 비해 골수 이식군에서 많았다. 결론: 흰쥐의 급성 대장염 치료에 골수이식은 효과적이며 골수유래세포는 선와니쉐 부위에서 근육섬유세포로 분화되어 장염의 치료에 관여한다. Background/Aims: Bone marrow-derived cells (BMDC) contribute to tissue maintenance under many kinds of pathologic conditions. We carried out a study to see how BMDC play a role in the treatment of experimental murine colitis. Methods: We divided the animals into 3 groups and treated them with 50% ethanol (control group), 2,4,6-trinitrobenzene sulfinic acid colitis (TNBS group), and TNBS+bone marrow transplant (BMT group). To induce colitis, TNBS (5.0 mg/mouse) dissolved in 50% ethanol was injected into anus weekly for two weeks. Bone marrow transplantations were performed using bone marrow of male transgenic mouse (donor) with green fluoresence protein (GFP) into female wild type mouse (recipient) three weeks before TNBS instillation. All animals were sacrificed, and colons were extracted one week after the last TNBS instillation. We measured microscopic scores of mucosal injury and investigated the GFP expression for bone marrow engraftment. The immunostaining of vimentin and α-smooth muscle actin (α-SMA) for myofibroblasts was performed. Results: The score of mucosal injury in the TNBS group was much more severe than those in control, and reduced significantly by BMT (p<0.05). GFP-positive cells were almost deposited in pericryptal niche of BMT group but not at all in both control and TNBS group. Most of myofibroblasts stained with both vimentin and SMA also infiltrated into pericryptal niche. But, the number of myofibroblasts stained with vimentin and SMA in both control and TNBS group was smaller than that in BMT group. Conclusions: BMDC deposited on pericryptal niche might have a significant role in repairing acute experimental murine colitis. (Korean J Gastroenterol 2009;54:20-27)
Therapeutic Potential of Differentiated Mesenchymal Stem Cells for Treatment of Osteoarthritis
Ham, Onju,Lee, Chang Youn,Kim, Ran,Lee, Jihyun,Oh, Sekyung,Lee, Min Young,Kim, Jongmin,Hwang, Ki-Chul,Maeng, Lee-So,Chang, Woochul MDPI 2015 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.16 No.7
<P>Osteoarthritis (OA) is a chronic, progressive, and irreversible degenerative joint disease. Conventional OA treatments often result in complications such as pain and limited activity. However, transplantation of mesenchymal stem cells (MSCs) has several beneficial effects such as paracrine effects, anti-inflammatory activity, and immunomodulatory capacity. In addition, MSCs can be differentiated into several cell types, including chondrocytes, osteocytes, endothelia, and adipocytes. Thus, transplantation of MSCs is a suggested therapeutic tool for treatment of OA. However, transplanted naïve MSCs can cause problems such as heterogeneous populations including differentiated MSCs and undifferentiated cells. To overcome this problem, new strategies for inducing differentiation of MSCs are needed. One possibility is the application of microRNA (miRNA) and small molecules, which regulate multiple molecular pathways and cellular processes such as differentiation. Here, we provide insight into possible strategies for cartilage regeneration by transplantation of differentiated MSCs to treat OA patients.</P>
( Ji Hyun Lee ),( Chul Seung Kay ),( Lee So Maeng ),( Se Jeong Oh ),( An Hi Lee ),( Jeong Deuk Lee ),( Chi Wha Han ),( Sang Hyun Cho ) 대한피부과학회 2009 Annals of Dermatology Vol.21 No.4
Background: Radiation therapy (RT) including tomotherapy has been widely used to treat primary tumors, as well as to alleviate the symptoms of metastatic cancers. Objective: The primary purpose of this study was to examine the characteristics of the clinical features and pathophysiological mechanisms associated with acute radiation dermatitis in cancer patients that received tomotherapy, and compare the results to patients treated by conventional radiation therapy. Methods: The study population consisted of 11 patients that were referred to the dermatology department because of radiation dermatitis after receiving tomotherapy; all patients were evaluated for clinical severity. The patients were assessed and identified using the National Cancer Institute Common Toxicity Criteria version (CTC) 3.0. We performed biopsies of the skin lesions that were examined for apoptosis using the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labelling (TUNEL) assay and stained immunohistochemically with monoclonal antibodies to CD8, CD4 and TGF-β. As a positive control, patients with radiation dermatitis treated with conventional radiation therapy were also studied. Results: The results of the clinical features of the skin of tomotherapy patients were the following: grade 1 (36%), grade 2 (55%) and other changes (9%). Among the population that had skin lesions due to acute radiation dermatitis, the mean number of positive cells per high power field (HPF) was the following: there were 30.50±7.50 TUNEL-positive cells, 34.60±12.50 CD8+T cells, 5.19±3.17 CD4+T cells and 9.95±1.33 TGF-β positive cells measured per HPF. The mean number of positive cells per HPF for the patients that received conventional radiation therapy was: TUNLEL-positive cells in 7.5±1.64, CD8-, CD4- and TGF-β-positive cells in 12.50±3.73, 3.16±1.47, 6.50±1.97. Conclusion: We found that the number of TUNEL-positive cells and CD8+T cells were higher in the lesions of patients receiving tomotherapy compared to the lesions of the patients receiving conventional radiation therapy. These findings suggest that tomotherapy without dose modification may cause significantly more severe forms of radiation dermatitis by apoptosis and cytotoxic immune responses than conventional radiation therapy. (Ann Dermatol 21(4) 358~363, 2009)