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PCI Interface HDTV 수신카드의 인식률 개선
서영하(Young-Ha Seo),김용득(Yong-Deak Kim) 한국멀티미디어학회 2009 한국멀티미디어학회 학술발표논문집 Vol.2009 No.1
본 논문은 LGDT3303(VSB IC)를 사용한 PCI 지상파 HDTV 수신카드의 인식률 개선에 관한 것이다. Desktop 시스템에서 초기 부팅시 LGDT3303 IC가 장착된 PCI HDTV card 인식률 개선방법에 대해 설명하였으며 양산제품 출하 후 PCI HDTV 인식불량 현상을 없애므로써 SCR(Service Call Rate)및 제품 유지보수 비용을 감소시킬 수 있다.
오미자칠해목 추출물의 과산화수소로 유발된 PC12뇌세포 사멸과 스코폴라민으로 유발된 렛드 동물모델에 대한 개선 효과
박은국,한경훈,허재혁,김남기,배문형,서영하,용윤중,정선용,최춘환,Park, Eun-kuk,Han, Kyung-Hoon,Heo, Jae-Hyeok,Kim, Nam-Ki,Bae, Mun-Hyoung,Seo, Young-Ha,Yong, Yoon-joong,Jeong, Seon-Yong,Choi, Chun-Whan 한국식품영양학회 2020 韓國食品營養學會誌 Vol.33 No.3
Cognitive impairment is considered to be key research topics in the field of neurodegenerative diseases and in understanding of learning and memory. In the present study, we investigated neuroprotective effects of Schisandra chinensis (SC) and Ribes fasciculatum (RF) extracts in hydrogen peroxide-induced neuronal cell death in vitro and scopolamine-induced cognitive impairment in Sprague Dawley<sup>®</sup> (SD) rat in vivo. Apoptotic cell death in neuroblastic PC12 cell line was induced by hydrogen peroxide for 1 hour at 100 μM. However, mixture of SC and RF treatment prevented peroxide induced PC12 cell death with no neurotoxic effects. For in vivo experiment, the effect of SC and RF extracts on scopolamine-induced cognitive impairment in SD rat was evaluated by spontaneous alternation behavior in Y-Maze test. After 30 min scopolamine injection, the scopolamine-induced rats presented significantly decreased % spontaneous alteration and acetylcholine level, compared to non-induced group. However, treatment of SC+RF extracts rescued the reduced % spontaneous alteration with acetylcholine concentration from hippocampus in scopolamine-induced rats. These results suggested that mixture of SC and RF extract may be a potential natural therapeutic agent for the prevention of cognitive impairment.
과산화수소로 유도된 SH-SY5Y 신경세포 사멸에 대한 오미자·칠해목 추출혼합물의 보호효과
박은국,한경훈,이승희,김남기,배문형,서영하,용윤중,정선용,최춘환,Park, Eun-kuk,Han, Kyung-Hoon,Lee, Seung-Hee,Kim, Nam-Ki,Bae, Mun-Hyoung,Seo, Young-Ha,Yong, Yoon-joong,Jeong, Seon-Yong,Choi, Chun-Whan 한국식품영양학회 2018 韓國食品營養學會誌 Vol.31 No.6
In neuronal cell deaths, oxidative stress is normally implicated with a most of these deaths occurring in neurodegenerative disorders such as the Alzheimer's and Parkinson's diseases. In this study, the neuroprotective effects of Schisandra chinensis (SC) and Ribes fasciculatum (RF) extracts on hydrogen peroxide ($H_2O_2$)-induced oxidative stress in neuroblastic cell line were investigated. For an hour, hydrogen peroxide of $100{\mu}M$ concentration, was induced on neuroblastic cells, causing apoptic cell death. For the neuroprotection, a sample of neuroblastic cells had been pre-treated with SC and RF extracts for 24 hours before application of the hydrogen peroxide. No neurotoxic effects were observed in the cells that had been treated by SC and RF. This prove that the treatment of SC and RF extract prevented apoptotic cell death of neuroblastic cell line exposed to oxidative injury. In addition, applying both SC and RF extracts at a 7:3 ratio increased the neuronal cell survival rate, compared to individual treatments of SC and RF extract. This study suggests that SC and RF extracts may be potential therapeutic agents for the prevention of neuronal cell death.