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Jino Baek,Jin Hyang Jung,Wan Wook Kim,Seung Ook Hwang,Jeeyeon Lee,Jin Gu Kang,Yee Soo Chae,Soo Jung Lee,Ji Yun Jeong,Ji Young Park,Jeong Woo Lee,Jung Dug Yang,Hye Jung Kim,Hoyong Park 한국유방암학회 2015 Journal of Breast Disease Vol.3 No.1
Most local recurrences following mastectomy with flap reconstruction develop in the superficial skin and subcutaneous fat layer or at the mastectomy site. However, there is a possibility of local recurrence in the reconstructed tissue with lymphangiogenesis into the reconstructed flap if the flap was harvested from a distant organ. We herein report a case of a patient with invasive carcinoma that exhibited extensive lymphovascular invasion and tumor emboli at the initial diagnosis and repeatedly recurred not only in the original breast skin and tissue, but also in the reconstructed flap.
Comprehensive soil quality assessment in urban forests using biological indices
Jino Son,Yun-Sik Lee,Kijong Cho 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
and evaluated mainly physico-chemical properties. In the present study, several biological indices were applied to determine whether biological indices could provide a more comprehensive understanding in terms of soil quality assessment in urban forests. Microbe and invertebrate biological indices (i.e. biodiversity of both microbe and invertebrate, enzyme activity of microbe, feeding activity of invertebrate) were examined at 6 urban forests with different levels of disturbance in Seoul, Korea. The results showed that feeding activity and biodiversity were significantly and positively intercorrelated, but not with the enzyme activity. We also examined whether these biological indices could be modeled as functions of soil physico-chemical characteristics. To develop a predictive model, we applied principal component regression. The results showed that first principal component represented more than 33% of the total variance of biological indices and gave a good relationship with soil physico-chemical characteristics (R2=0.71). The predictive model developed in this study can be used for qualitative but not for quantitative assessment of soil quality.
T-Cell Dysfunction and Inhibitory Receptors in Hepatitis C Virus Infection
Lee, Jino,Suh, William I.,Shin, Eui-Cheol The Korean Association of Immunobiologists 2010 Immune Network Vol.10 No.4
Dysfunction of the virus-specific T cells is a cardinal feature in chronic persistent viral infections such as one caused by hepatitis C virus (HCV). In chronic HCV infection, virus-specific dysfunctional CD8 T cells often overexpress various inhibitory receptors. Programmed cell death 1 (PD-1) was the first among these inhibitory receptors that were identified to be overexpressed in functionally impaired T cells. The roles of other inhibitory receptors such as cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) and T cell immunoglobulin and mucin domain-containing molecule 3 (Tim-3) have also been demonstrated in T-cell dysfunctions that occur in chronic HCV patients. Blocking these inhibitory receptors in vitro restores the functions of HCV-specific CD8 T cells and allows enhanced proliferation, cytolytic activity and cytokine production. Therefore, the blockade of the inhibitory receptors is considered as a novel strategy for the treatment of chronic HCV infection.
Yun-Sik Lee,Jino Son,Yongeun Kim,Myung-seob Kim,Kijong Cho 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10
In recent, the ISO has suggested a new guideline by using an avoidance behavior of soil invertebrates for the use of screening tools in the evaluation of soil contamination. In this study, we used a collembolan, Paronychiurus kimi which is native to Korea, as a test species because of its ecological relevance to Korean soil. The objectives of this study were to evaluate whether the exposure time (24, 48, 72, 96 and 120 h) and cadmium concentration (50, 100, 200 and 400 mg/kg of dry soil) affect the avoidance behavior of P. kimi. Twenty collembolans were introduced to the center of the soil which divided into two sections; cadmium untreated soil was placed in one of the section, and the cadmium treated soil was placed in the opposite section. To minimize soil structural effect on the avoidance behavior, the both soils were compacted by applying unidirectional force to the soil surface. The avoidance behaviors of P. kimi were not significantly affected by cadmium concentrations after 24 and 48 h of exposure, but were significant after 72-120 h. There results showed that avoidance behavior appears to be a good endpoint for the use in evaluation of soil contamination with 72 h of exposure duration.
Effect of fenoxycarb (juvenile hormone agonist) on biological traits of Paranura rosea (Collembola)
Yun-Sik Lee,Jino Son,Yongeun Kim,Myung-seob Kim,Kijong Cho 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.10
In this study, the toxic effects of fenoxycarb on biological traits of nontarger arthropod P. rosea, Collembola. The tests were assessed in the OECD artificial soil under two different exposure condtions, one was exposed in the bulk soil, and the other was exposed in the compacted soil which unidirectional force was applied to the soil surface. In the bulk system, survived adults and hatched juveniles were counted after 28-day exposures, and in the compact system, survived adults, eggs, hatched juveniles and molts were counted everyday until no more hatching. The toxic effect of fenoxycarb on survival and juvenile production of P. rosea in the bulk system was more toxic than that of the compact system. Juveniles and eggs were seriously affected as compared with toxic effect for adults. Particularly, toxic effect on hatching rate (3.75 mg/kg EC50juvenile) were very higher than that on oviposition (200.868 mg/kg EC50egg) or survival rate of adults ( >1200 mg/kg LC50). The molting freauency of P. rosea was decreased in a concentration dependent manner. These results suggest that the IGRs fenoxycarb exhibit significant impacts on the biological traits of non-target organisms P. rosea and its toxic effects are differently assessed depending on the exposure conditions.