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Sun Ginseng Protects Endothelial Progenitor Cells From Senescence Associated Apoptosis
임우석,정진영,반재준,임지연,이순태,주건,김만호 고려인삼학회 2012 Journal of Ginseng Research Vol.36 No.1
Endothelial progenitor cells (EPC) are a population of cells that circulate in the blood stream. They play a role in angiogenesis and, therefore, can be prognostic markers of vascular repair. Ginsenoside Rg3 prevents endothelial cell apoptosis through the inhibition of the mitochondrial caspase pathway. It also affects estrogen activity, which reduces EPC senescence. Sun ginseng (SG),which is heat-processed ginseng, has a high content of ginsenosides. The purpose of this study was to investigate the protective effects of SG on senescence-associated apoptosis in EPCs. In order to isolate EPCs, mononuclear cells of human blood buffy coats were cultured and characterized by their uptake of acetylated low-density lipoprotein (acLDL) and their binding of Ulex europaeus agglutinin I (ulex-lectin). Flow cytometry with annexin-V staining was performed in order to assess early and late apoptosis. Senescence was determined by β-galactosidase (β-gal) staining. Staining with 4′-6-Diamidino-2-phenylindole verifi ed that most adherent cells (93±2.7%) were acLDL-positive and ulex-lectin-positive. The percentage of β-gal-positive EPCs was decreased from 93.8±2.0% to 62.5±3.6% by SG treatment. A fl uorescence-activated cell sorter (FACS) analysis showed that 4.9% of EPCs were late apoptotic in controls. Sun ginseng decreased the apoptotic cell population by 39% in the late stage of apoptosis from control baseline levels. In conclusion, these results show antisenescent and antiapoptotic effects of SG in human-derived EPCs, indicating that SG can enhance EPC-mediated repair mechanisms. Endothelial progenitor cells (EPC) are a population of cells that circulate in the blood stream. They play a role in angiogenesis and, therefore, can be prognostic markers of vascular repair. Ginsenoside Rg3 prevents endothelial cell apoptosis through the inhibition of the mitochondrial caspase pathway. It also affects estrogen activity, which reduces EPC senescence. Sun ginseng (SG),which is heat-processed ginseng, has a high content of ginsenosides. The purpose of this study was to investigate the protective effects of SG on senescence-associated apoptosis in EPCs. In order to isolate EPCs, mononuclear cells of human blood buffy coats were cultured and characterized by their uptake of acetylated low-density lipoprotein (acLDL) and their binding of Ulex europaeus agglutinin I (ulex-lectin). Flow cytometry with annexin-V staining was performed in order to assess early and late apoptosis. Senescence was determined by β-galactosidase (β-gal) staining. Staining with 4′-6-Diamidino-2-phenylindole verifi ed that most adherent cells (93±2.7%) were acLDL-positive and ulex-lectin-positive. The percentage of β-gal-positive EPCs was decreased from 93.8±2.0% to 62.5±3.6% by SG treatment. A fl uorescence-activated cell sorter (FACS) analysis showed that 4.9% of EPCs were late apoptotic in controls. Sun ginseng decreased the apoptotic cell population by 39% in the late stage of apoptosis from control baseline levels. In conclusion, these results show antisenescent and antiapoptotic effects of SG in human-derived EPCs, indicating that SG can enhance EPC-mediated repair mechanisms.
A Study of the Housing Needs of the aged and Elderly Residential Facilities in an Urban Area
임우석 서울대학교행정대학원 2007 The Korean Journal of Policy Studies Vol.21 No.2
The purpose of this study is to find out the demand for residence ofcitizens on the paid elderly residential facilities that has been heightened for itsuse in recent days with the focus on the paid nursing home facilities and the paidelderly treatment facilities. The subject for the survey was 200 adults of 35 yearsor older who reside in Seoul, and for the final analysis, a total of 169 copies ofvalid samples was used. The following is the major result of the study. For thereason of post-retirement entry into the nursing home facilities, the mostresponses came from the fact that they could live with the similar age people asneighborhood or friend. Appropriate residential area would be preferred for 7-12pyeong (1 pyeong=3.3058m2) for single use, and 12-15 pyeong for couples, andfor the appropriate security deposit and monthly living expense at the time ofentering into the facilities, the highest response was for 50 million won and500,000 won for the paid nursing home facilities, and 10-20 million won and600,000 won for the paid elderly treatment facilities. The most important criteriafor using the facilities was in the sequence of entry costs, facilities and others,and the consideration on the facility operator would be in the sequence of facili-ty operation capability and social reliability. And, for the annexation (coestab-lishment) of paid nursing home facilities and elderly treatment facilities, theopinion as desirable was shown high (73.9%).