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Solar urticaria in Korean patients
( Sung Min Kim ),( Young Ah Cho ),( Ji Su Lee ),( Ji Youn Hong ),( Jin Hee Kim ),( Joo Ran Hong ),( Hye In Cheon ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2020 대한피부과학회 학술발표대회집 Vol.72 No.1
Background: Solar urticaria (SU) is an uncommon type of photodermatoses characterized by erythematous wheal with pruritus after sunlight exposure, which shows a female predominance. Only a few studies to analyze the clinical features of SU were reported in Asia. Objectives: We aimed to analyze the clinical and photobiological characteristics of SU in Korea. Methods: We retrospectively investigated the medical records of patients with SU who visited the department of dermatology, Konkuk university medical center from January 2005 to January 2020. Results: Of a total of 44 patients, 36 (81.8%) were male and 8 (18.2%) were female. The mean age at onset was 17.6 years (range, 5-47) and the mean threshold time was 19.7 minutes. Among 32 patients who underwent phototesting, the action spectrum most commonly implicated was ultraviolet (UV) A only in 12 (37.5%), and then visible light (415nm) only was responsible for SU in 8 (25.0%). Three patients (9.4%) were induced by both UVA and visible light (415nm). Even 4 patients (12.5%) were triggered by only natural sunlight. Serum immunoglobulin E levels were measured in 33 patients, and 17 (51.5%) showed values higher than normal. The treatment most widely used were oral antihistamine (43.2%), followed by phototherapy (13.6%). Conclusion: SU is a rare photodermatosis in Korea, which shows a male preponderance. In this study, UVA and visible light (415nm) were predominant action spectrum of SU.
( Sul Lee ),( Hyung Joon Yoon ),( Eun Hye Jeon ),( Juseok Yang ),( Yong Jung Song ),( Hyun Jin Roh ),( Sang Hun Lee ),( Byung Su Kwon ),( Ki Hyung Kim ),( Dong Soo Suh ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-
Objective: The aim of this study is to evaluate oncologic outcomes of total abdominal radical hysterectomy (TARH), total laparoscopic radical hysterectomy (TLRH) and laparoscopic-assisted radical vaginal hysterectomy (LARVH) in early cervical cancer patients (stage IB2-3, tumor size≥2cm), analyzing the risk factors that may affect the clinical results. Methods: A total of 756 patients underwent radical hysterectomy between 2000 and 2019 from three university hospitals (Pusan National University Hospital, Yang-san Pusan National University Hospital, Ulsan University Hospital) were enrolled. Among them, 172 patients with stage IB2-3 were analyzed retrospectively. Results: Seventy-seven patients were treated with TARH, and 95 were managed via minimally invasive surgery (MIS), consisting of 35 with TLRH and 60 with LARVH. TARH group had better disease five-year disease free survival (DFS) and overall survival (OS) compared with MIS group (86.4% vs. 73.4 for DFS and 91.7 vs. 82.2 for OS), but not statistically significant in both (p=0.058 for DFS and p=0.119 for OS). When TARH and the LARVH group were compared, both five-year DFS and OS were not significant different (86.4 vs 82.2%; p=0.288 for DFS and 91.7 vs 84.4%; p=0.206 for OS). However, when TARH and the TLRH group were compared, TLRH group had significantly worse five-year DFS than TARH (86.4 vs 54.5%; p=0.008), but five-year OS was not significant different (91.7 vs 77.5%; p=0.127). Multivariate analysis showed that LN metastasis and TLRH surgical approaches were an independent prognostic factor for DFS in IB2-3 cervical cancers. Conclusion: Our findings provided the evidence that TLRH surgical approach was associated with worse DFS in IB2-3 cervical cancers but that of LARVH was not. Such results may have important implications of colpotomy method for MIS in cervical cancer.
A study on the relationship between psoriasis and suicide rate: a nationwide cohort study in Korea
( Sung Min Kim ),( Hyung Seok Son ),( Chang Yong Kim ),( Young Ah Cho ),( Ji Su Lee ),( Ji Youn Hong ),( Jin Hee Kim ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.1
Sung, Young-Chul,Lee, Sung-Hee,Kim, Byong-Moon,Kwak, Hyun-Hee,Kim, Hye-Ju,Yang, Se-Hwan,Chang, Jun,Park, Su-Hyung 대한면역학회 2007 Immune Network Vol.7 No.4
Although IL-12 has been widely accepted to playa central role in the control of pathogen infection, the use of recombinant IL-12 (rIL-12) as a vaccine adjuvant has been known to be ineffective because of its rapid clearance in the body. Methods: To investigate the effect of sustained release of IL-12 in vivo in the peptide and protein vaccination models, rIL-12 was encapsulated into poly (A<sub>DL</sub>-lactic-co-glycolic acid) (PLGA). Results: We found that codelivery of IL-12-encapsulated microspheres (IL-12EM) could dramatically increase not only antibody responses, but also antigen-specific CD4<sup>+</sup> and CD8<sup>+</sup> T cell responses. Enhanced immune responses were shown to be correlated with protective immunity against influenza and respiratory syncytial virus (RSV) virus challenge. Interestingly, the enhancement of CD8<sup>+</sup> T cell response was not detectable when CD4<sup>+</sup> T cell knockout mice were subjected to vaccination, indicating that the enhancement of the CD8<sup>+</sup> T cell response by IL-12EM is dependent on CD4<sup>+</sup> T cell help. Conclusion: Thus, IL-12EM could be applied as an adjuvant of protein and peptide vaccines to enhance protective immunity against virus infection.
Yang, Woo Seok,Yi, Young-Su,Kim, Donghyun,Kim, Min Ho,Park, Jae Gwang,Kim, Eunji,Lee, Sang Yeol,Yoon, Keejung,Kim, Jong-Hoon,Park, Junseong,Cho, Jae Youl The Korean Society of Ginseng 2017 Journal of Ginseng Research Vol.41 No.3
Background: Compound K (CK) is a bioactive derivative of ginsenoside Rb1 in Panax ginseng (Korean ginseng). Its biological and pharmacological activities have been studied in various disease conditions, although its immunomodulatory role in innate immunity mediated by monocytes/macrophages has been poorly understood. In this study, we aimed to elucidate the regulatory role of CK on cellular events mediated by monocytes and macrophages in innate immune responses. Methods: The immunomodulatory role of CK was explored by various immunoassays including cell-cell adhesion, fibronectin adhesion, cell migration, phagocytic uptake, costimulatory molecules, reactive oxygen species production, luciferase activity, and by the measurement of mRNA levels of proinflammatory genes. Results: Compound K induced cell cluster formation through cell-cell adhesion, cell migration, and phagocytic activity, but it suppressed cell-tissue interactions in U937 and RAW264.7 cells. Compound K also upregulated the surface expression of the cell adhesion molecule cluster of differentiation (CD) 43 (CD43) and costimulatory molecules CD69, CD80, and CD86, but it downregulated the expression of monocyte differentiation marker CD82 in RAW264.7 cells. Moreover, CK induced the release of reactive oxygen species and induced messenger RNA expression of proinflammatory genes, inducible nitric oxide synthase, and tumor necrosis factor-alpha by enhancing the nuclear translocation and transcriptional activities of nuclear factor kappa-B and activator protein-1. Conclusion: Our results suggest that CK has an immunomodulatory role in innate immune responses through regulating various cellular events mediated by monocytes and macrophages.
Su-hwan Lee,Pyeong Shin,Hui-su Bae,Jang-Hee Lee,Yang-Yeol Oh,Sang-Hun Lee,Tae-Hwan Rho,Beom-Heon Song,Jae-Yeong Cho,Kyoung-Bo Lee,Keon-Hui Lee,Ki-Hoon Park 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.6
Newly reclaimed tidal land is known to be in low status of soil fertility. The incorporation of crop residue is an effective method to improve soil properties and fertility in reclaimed saline soils. The objective of this study was to evaluate the efficiency of rice straw (RS) application to improve physico-chemical properties of saline-sodic soil and its contribution to productivity of whole crop barley. Increasing rate of rice straw improved growth parameter related to yield of whole crop barley, which increased tiller number significantly (p<0.05).The yield increased by 15% (F.W) and 9% (D.W) in rice straw-amended plots. The content of soil organic matter (SOM) in the surface soil (0-20cm) with rice straw incorporation increased by 5~9% (RS 2.5~RS 7.5) compared to RS 0, in which the content of SOM decreased after two consecutive cultivations. Rice straw incorporation promoted soil physico-chemical properties and nutrient-availability of the test crop, as indicated in change in soil bulk density, porosity and increased nutrient uptake of plant. Especially, the P content and uptake of whole crop barley increased with increasing the rate of rice straw application. In conclusion, the rice straw application at rates of 5.0-7.5 ton·ha<SUP>-1</SUP> in reclaimed saline soils effectively improved soil properties and crop productivity, which has potentials to reduce the loss of chemical fertilizers and facilitate the favorable condition for crop growth under adverse soil condition.
Optimal Design of Thinned Array Using a Hybrid Genetic Algorithm
Sang-Hoon Jung,Kang-In Lee,Hyun-Su Oh,Hyun-Kyo Jung,Hoongee Yang,Young-Seek Chung 한국전자파학회JEES 2021 Journal of Electromagnetic Engineering and Science Vol.21 No.4
In this paper, a hybrid genetic algorithm (GA) is proposed for thinning a two-dimensional planar array by combining the conventional GA with moving least squares (MLS). This enhances the convergence rate and the global search performance. The MLS method is used to estimate local interpolation functions from non-uniform sample data (the population and the value of the objective function in the GA), and to find new and better populations from the interpolated functions. By incorporating these improved populations into the next generation, the MLS-GA achieves improved search performance of the global optimum and a faster convergence rate compared to conventional GA alone. Moreover, a nonlinear chirp function is used for an efficient thinning design. To verify the proposed MLS-GA, it is applied to a test function and the results are compared to that of the GA. The algorithm is then applied to thin an array with a rectangular grid and circular boundary. The design objectives are to minimize the peak side-lobe level and gain loss while satisfying a given thinning coefficient and to compare the results with the GA.
Su Hwan Lee,Yang Yeol Oh,Jin Hee Ryu,Hak Sung Lee,Bang Hoon Kang,Hee Kyeong Ock,Kang Ho Jung 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.4
Soil salinization driven by groundwater distribution in the reclaimed land is one of the major limiting factors for crop cultivation and soil management. In this study, the effects of two different water table depth (G1 site with intermediate and deep vs. G2 site with shallow depth) of groundwater (on soil salinity, water and crop productivity were investigated. The rainfall event greatly impacted the groundwater recharging rate and salt leaching. The falling groundwatr table depth from 30 to 80 cm together with higher evaporation at G2 site caused soil salinization in the rhizosphere, whereas increases in soil salinity at G1 site was negligible. Overall, soil water content at G2 site was higher than that at G1 site. The positive correlation of soil salinity with soil water content (r² = 0.69) and negative with groundwater table (r² = 0.89) indicated hydraulic connection between groundwater table and soil surface. The deeply falling groudwater table with negative water balance (Evaporation > Rainfall) induced drought-combined salt stress to crop. Soybean was much more susceptible to soil salinty stress and excess-moisture injury than maize, suggesting that the crop selection and practices to reduce crop vulnerability to abiotic stresses(salt and water) should be considered for sustainable and stable agriculture in reclaimed land. Our results highlight that groundwater table depth would play a crucial role in founding cropland suitability and the optimum groundwater table to avoid salinization and excessve wetting might be 1.5 - 2.0 m.