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정희원 ( Hee Won Jung ),김선욱 ( Sun Wook Kim ),진호준 ( Ho Jun Chin ),김철호 ( Cheol Ho Kim ),김광일 ( Kwang Il Kim ) 대한내과학회 2013 대한내과학회지 Vol.85 No.2
Background/Aims: A U-shaped relationship between body mass index (BMI) and mortality has been reported. However, controversy exists as to whether skeletal muscle mass affects mortality in healthy older adults. We evaluated the independent association of BMI or appendicular skeletal muscle mass (ASM) with mortality in elderly people. Methods: A total of 4,261 consecutive subjects older than 65 years who underwent health examinations at Seoul National University Gangnam Center between 2005 and 2009 were included in the analysis. ASM, ASM/height² and ASM/weight were estimated by bioelectrical impedance analysis. Sarcopenia was defined as a relative skeletal muscle mass of 1-2 SD below (class I) or more than 2 SD below (class II) the gender-specific mean for healthy young adults. BMI was grouped into five groups (A-E). Results: During the follow-up period (27.2 ± 13.5 months), 63 subjects died. The subjects who died were significantly older and had a male predominance, increased levels of inflammatory markers and poor nutritional statuses. In a fully adjusted Cox proportional hazards model, BMI was not associated with mortality. However, class I sarcopenia (HR 2.11, 95% CI 1.17 3.79) and class II sarcopenia (HR 3.47, 95% CI 1.62-7.43), defined by ASM/height², were related to all-cause mortality. This association was not observed when sarcopenia was defined by ASM/weight. Class II sarcopenia defined by ASM/height² was associated with cancer-related mortality (HR 5.73, 95% CI 2.22-14.78), but not with cardiovascular mortality (HR 1.56, 95% CI 0.17 14.27). Conclusions: This study indicates that lower skeletal muscle mass is a risk marker for cancer-related and all cause mortality in Korean elderly people. (Korean J Med 2013;85:167-173)
개인별 유전자 네트워크 구축 및 페이지랭크를 이용한 환자 특이적 암 유발 유전자 탐색 방법
정희원 ( Jung Hee Won ),박지우 ( Park Ji Woo ),안재균 ( Ahn Jae Gyoon ) 한국정보처리학회 2021 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.10 No.12
Cancer patients can have different kinds of cancer driver genes, and identification of these patient-specific cancer driver genes is an important step in the development of personalized cancer treatment and drug development. Several bioinformatic methods have been proposed for this purpose, but there is room for improvement in terms of accuracy. In this paper, we propose NPD (Network based Patient-specific Driver gene identification) for identifying patient-specific cancer driver genes. NPD consists of three steps, constructing a patient-specific gene network, applying the modified PageRank algorithm to assign scores to genes, and identifying cancer driver genes through a score comparison method. We applied NPD on six cancer types of TCGA data, and found that NPD showed generally higher F1 score compared to existing patient-specific cancer driver gene identification methods.
정희원 ( Hee Won Chung ),유종진 ( Jong Jin Yoo ),최병용 ( Byoong Yong Choi ),조현정 ( Hyun Jung Cho ),강은하 ( Eun Ha Kang ),송영욱 ( Yeong Wook Song ),이윤종 ( Yun Jong Lee ) 대한류마티스학회 2013 대한류마티스학회지 Vol.20 No.5
Primary Sjogren`s syndrome (pSS) is characterized by chronic inflammation and dysfunction in exocrine organs; however, it also has protean clinical features, including neuropsychiatric symptoms. A major neurological manifestation is peripheral neuropathy and involvement of the central nervous system is uncommonly described in pSS. A 52-year-old female was admitted because of depression, dysarthria, gait abnormality, and memory disturbance, which had developed over two months, and was diagnosed as pSS. She was treated successfully with high-dose glucocorticoid and cyclophosphamide pulse therapy without recurrence during the follow-up period of two years. Herein, we describe the first Korean case of pSS presenting with rapidly progressive cognitive impairment along with a review of the literature.
정희원(Hee Won Jung),안윤형(Yun Hyung Ahn),조민영(Min Young Cho) 한국전지학회 2022 한국전지학회지 Vol.2 No.1
리튬이차전지의 기술력 발전에 따라 IT 소형기기 중심에서 ESS 및 EV 등 시장범위가 확대되었으며, 지금도 4차산업과 연관된 로봇, 항공, 의료 분야 등 다양한 응용분야에 사용되고 있다. 사용량의 확대에 따라 오용 및 사용환경 영향으로 인한 전기적, 화재적 사고 발생 빈도가 증가하고 안전성 확보 이슈가 대두됨에 따라 국제적으로 표준 및 규제 강화가 추진되고 있는 상황이다. 본 논문에서는 리튬이차전지의 안전성과 관련하여 표준의 동향을 분석하고 향후 대응 체계 구축의 중요성을 알아본다. With the development of lithium secondary battery technology, the market has expanded from small IT devices to ESS and EV, and it is also being used in various application fields such as robots, aviation, and medical fields so on, related to the 4th industry. With the increase in usage, the frequency of electrical and fire accidents due to misuse and environmental impacts increases, and as safety issues arise, international standards and regulations are being strengthened. In this paper, we analyze the trend of standards related to the safety of lithium secondary batteries and examine the importance of establishing a response system in the future.