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안삼근,강형철,안상열,이균필,변희섭 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4
본 연구는 집성 염색 무니목 개발을 위하여 사용 가능한 수종과 3종류의 염료를 사용하여 염색시간, 염색온도, 함수율 및 Flitch 제작에 대하여 연구한 결과는 다음과 같다. 실험에 사용한 4수종 중에서 선삭성이 불량한 은수원 사시나무를 제외한 3수종인 소나무와 이태리 포플러, 마티카가 사용 가능한 수종으로 밝혀졌다. Stain은 번지거나 얼룩이 지는 현상, Dylon은 침투 불균일로 부적당하였으나 Fine은 염색상태가 양호하였다. 염색시간은 5시간 이상 되어야 염색정도가 양호하였고, 염색온도는 90℃에서 가장 적당하였으며 생재와 기건재 및 포수재에 대한 영향은 큰 차이가 없었다. Flitch제작에 적당한 함수율은 9%이었다. This study was carried out to develop laminated dyeing wood, for which usable three sixties of trees and 3 kinds of dye stuffs were used to investigate dyeing time, dyeing temperature, moisture content and manufacture of flitch, the results were as follows: Out of four species of trees used in the experiment, it was found that three species, Pinus densiflora, Populus euramercana and Dyrea costulata were usable excluding Populus tomentiglandulosa whose cutting ability was bad. As to influence according to the kind of dye stuff, the Stain of low price could be used as a coloring agent but it was not proper as a dyeing agent due to spreading or staining phenomenon. As Dylon which was generally used to dye textile penetrated them uneven, dyeing only their surface, it was also found improper to be used. On the other hand, the dyed condition was good with Fine. The dyed condition was good when dyeing time was more than 5 hours and it was the most adequate when the temperature was at 90℃. There was no significant difference between their influence on green, dried and saturated wood.-In the manufacture of Flitch, the most appropriate moisture content was 9%.
Adverse fetal outcomes in pregnant rabbits experimentally infected with rabbit hepatitis E virus
Ahn, Hee-Seop,Han, Sang-Hoon,Kim, Yong-Hyun,Park, Byung-Joo,Kim, Dong-Hwi,Lee, Joong-Bok,Park, Seung-Yong,Song, Chang-Seon,Lee, Sang-Won,Choi, Changsun,Myoung, Jinjong,Choi, In-Soo 3M Company 2017 Virology Vol.512 No.-
<P>Hepatitis E virus (HEV) causes severe hepatitis in pregnant women, with associated poor fetal outcomes. To study HEV viral pathogenesis, pregnant rabbits were infected with low-and high-dose rabbit HEV at 2 weeks gestation. HEV was identified in the serum, feces, and liver tissue of infected rabbits, and dose-dependent fetal mortality rates ranging from 67% to 80% were observed. The aspartate transaminase (AST)/alanine transaminase ratio was significantly higher (P < 0.01) in high-dose infected rabbits than low-dose infected and negative control rabbits 14 days post infection (dpi). Tumor necrosis factor-alpha (TNF-alpha) was significantly higher in low dose (P < 0.01) and high-dose infected rabbits (P < 0.001) than in negative controls 7 dpi. High-dose HEV-infected rabbits produced significantly more interferon-gamma (IFN-gamma; P < 0.05) than negative control rabbits at 7 and 14 dpi. High levels of AST, TNF-alpha, and IFN-gamma may substantially influence adverse fetal outcomes in pregnant rabbits infected with high-dose HEV.</P>
( Ji Hee Yu ),( Jae Hee Ahn ),( Hye Jin Yoo ),( Ji A Seo ),( Sin Gon Kim ),( Kyung Mook Choi ),( Sei Hyun Baik ),( Dong Seop Choi ),( Chol Shin ),( Nan Hee Kim ) 대한내과학회 2015 The Korean Journal of Internal Medicine Vol.30 No.6
Background/Aims: Obstructive sleep apnea (OSA) is associated with an increased risk of obesity and non-alcoholic fatty liver disease (NAFLD), but it remains unclear whether the risk of NAFLD is independently related to OSA regardless of visceral obesity. Thus, the aim of the present study was to examine whether OSA alone or in combination with excessive daytime sleepiness (EDS) or short sleep duration was associated with NAFLD independent of visceral fat in Korean adults. Methods: A total of 621 participants were selected from the Korean Genome and Epidemiology Study (KoGES). The abdominal visceral fat area (VFA) and hepatic fat components of the participants were assessed using computed tomography scans and they were then categorized into four groups depending on the presence of OSA and EDS. Results: The proportions of NAFLD were 21.1%, 18.5%, 32.4%, and 46.7% in participants without OSA/EDS, with only EDS, with only OSA, and with both OSA and EDS, respectively. A combination of OSA and EDS increased the odds ratio (OR) for developing NAFLD (OR, 2.75; 95% confidence interval [CI], 1.21 to 6.28) compared to those without OSA/EDS, and this association remained significant (OR, 2.38; 95% CI, 1.01 to 5.59) even after adjusting for VFA. In short sleepers (< 5 hours) with OSA, the adjusted OR for NAFLD was 2.50 (95% CI, 1.08 to 5.75) compared to those sleeping longer than 5 hours without OSA. Conclusions: In the present study, OSA was closely associated with NAFLD in Korean adults. This association was particularly strong in those with EDS or short sleep duration regardless of VFA.
Hemophagocytic lymphohistiocytosis diagnosed by brain biopsy
Ju, Hee Young,Hong, Che Ry,Kim, Sung Jin,Lee, Ji Won,Kim, Hyery,Kang, Hyoung Jin,Park, Kyung Duk,Shin, Hee Young,Chae, Jong-Hee,Phi, Ji Hoon,Cheon, Jung-Eun,Park, Sung-Hye,Ahn, Hyo Seop The Korean Pediatric Society 2015 Clinical and Experimental Pediatrics (CEP) Vol.58 No.9
Hemophagocytic lymphohistiocytosis (HLH) is characterized by fever, splenomegaly, jaundice, and pathologic findings of hemophagocytosis in bone marrow or other tissues such as the lymph nodes and liver. Pleocytosis, or the presence of elevated protein levels in cerebrospinal fluid, could be helpful in diagnosing HLH. However, the pathologic diagnosis of the brain is not included in the diagnostic criteria for this condition. In the present report, we describe the case of a patient diagnosed with HLH, in whom the brain pathology, but not the bone marrow pathology, showed hemophagocytosis. As the diagnosis of HLH is difficult in many cases, a high level of suspicion is required. Moreover, the pathologic diagnosis of organs other than the bone marrow, liver, and lymph nodes may be a useful alternative.
Evening Chronotype Is Associated With Metabolic Disorders and Body Composition in Middle-Aged Adults
Yu, Ji Hee,Yun, Chang-Ho,Ahn, Jae Hee,Suh, Sooyeon,Cho, Hyun Joo,Lee, Seung Ku,Yoo, Hye Jin,Seo, Ji A,Kim, Sin Gon,Choi, Kyung Mook,Baik, Sei Hyun,Choi, Dong Seop,Shin, Chol,Kim, Nan Hee Issued for the Endocrine Society by the Williams & 2015 The Journal of clinical endocrinology & metabolism Vol.100 No.4
Yoo, Keon Hee,Lee, Soo Hyun,Sung, Ki Woong,Koo, Hong Hoe,Chung, Nak Gyun,Cho, Bin,Kim, Hack Ki,Kang, Hyoung Jin,Shin, Hee Young,Ahn, Hyo Seop,Baek, Hee Jo,Han, Dong Kyun,Kook, Hoon,Hwang, Tai Ju,Kim, Wiley Subscription Services, Inc., A Wiley Company 2011 American journal of hematology Vol.86 No.1
<P><B>Abstract</B></P><P>We report the outcome of 236 pediatric umbilical cord blood transplantations (UCBT) performed in Korea. Given that the sources of the grafts were mostly unrelated donors (<I>n</I> = 226; 95.8%), only the results of unrelated UCBT were included for all statistics. The most frequent primary disease was acute leukemia (<I>n</I> = 167). In total, 91.7% of recipients were seropositive for cytomegalovirus (CMV). The median doses of nucleated cells and CD34+ cells were 4.84 × 10<SUP>7</SUP>/kg and 2.00 × 10<SUP>5</SUP>/kg, respectively. The median times to neutrophil (>0.5 × 10<SUP>9</SUP>/L) and platelet recovery (>20 × 10<SUP>9</SUP>/L) were 18 and 45 days, respectively. Grade 2–4 acute graft‐versus‐host‐disease (GVHD) and chronic GVHD developed in 41.1 and 36.1% of cases, respectively. Forty‐five patients developed CMV disease. The 5‐year overall and event‐free survival were 47.5 and 36.9%, respectively. Multivariate analysis revealed that adverse factors for survival of the whole cohort were total body irradiation‐based conditioning (<I>P</I> = 0.007), salvage transplant (<I>P</I> = 0.001), failure to achieve early complete chimerism (<I>P</I> < 0.0005), and CMV disease (<I>P</I> = 0.001). The outcomes of the single‐ and double‐unit UCBT (<I>n</I> = 64) were similar, while double‐unit recipients were heavier (<I>P</I> < 0.0005) and older (<I>P</I> < 0.0005). We conclude that double‐unit UCBT is a reasonable option for older or heavier children and that the thorough surveillance of CMV infection and the development of an effective CMV therapeutic strategy may be especially important for Korean children, whose CMV seroprevalence exceeds 90%. Am. J. Hematol., 2011. © 2010 Wiley‐Liss, Inc.</P>
Genetic Variants in Interleukin-2 and Risk of Lymphoma among Children in Korea
Song, Nan,Han, So-Hee,Lee, Kyoung-Mu,Choi, Ji-Yeob,Park, Sue-K,Jeon, Su-Jee,Lee, Yun-Hee,Ahn, Hyo-Seop,Shin, Hee-Young,Kang, Hyoung-Jin,Koo, Hong-Hoe,Seo, Jong-Jin,Choi, Ji-Eun,Kang, Dae-Hee Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2
To estimate the genetic susceptibility for childhood lymphoma, we conducted an association study for 23 cases and 148 controls. Total 1536 tag single nucleotide polymorphisms (SNPs) were selected in 138 candidate gene regions related to immune responses, apoptosis, the cell cycle, and DNA repair. Twelve SNPs were significantly associated with the risk of lymphoma ($P_{trend}$ <0.05) in six genes ($IL1RN$, $IL2$, $IL12RB1$, $JAK3$, $TNFRSF13B$, and $XRCC3$). The most significant association was seen for $IL2$ variant rs2069762 ($OR_{TG+GG}$ vs. TT=3.43 (1.29-9.11), $P_{trend}$=0.002, min$P$=0.005). These findings suggest that common genetic variants in $IL2$ might play a role in the pathogenesis of childhood lymphoma.
Yoon, Hoi Soo,Im, Ho Joon,Moon, Hyung Nam,Lee, Jae Hee,Kim, Hee-Jin,Yoo, Keon Hee,Sung, Ki Woong,Koo, Hong Hoe,Kang, Hyung Jin,Shin, Hee Young,Ahn, Hyo Seop,Cho, Bin,Kim, Hack Ki,Lyu, Chuhl Joo,Lee, M Blackwell Publishing Ltd 2010 Pediatric transplantation Vol.14 No.6
<P>Yoon HS, Im HJ, Moon HN, Lee JH, Kim H-J, Yoo KH, Sung KW, Koo HH, Kang HJ, Shin HY, Ahn HS, Cho B, Kim HK, Lyu CJ, Lee MJ, Kook H, Hwang TJ, Seo JJ. The outcome of hematopoietic stem cell transplantation in Korean children with hemophagocytic lymphohistiocytosis.Pediatr Transplantation 2010: 14:735–740. © 2010 John Wiley & Sons A/S.</P><P>Abstract: </P><P>Chemoimmunotherapy-based treatments have improved the survival of patients with HLH, but outcomes of the patients are still unsatisfactory. We report here the outcome of Korean children with HLH who underwent HSCT, which was analyzed from the data of a nation-wide HLH registry. Retrospective nation-wide data recruitment for the pediatric HLH patients diagnosed between 1996 and 2008 was carried out by the Histiocytosis Working Party of the Korean Society of Hematology. Nineteen patients who received HSCT among the total of 148 enrolled children with HLH were analyzed for the transplant-related variables and events. The probability of five-yr survival after HSCT was 73.3% with a median follow-up of 57. Two months compared to 54.3% for the patients who were treated with chemoimmunotherapy only (p<I> </I>=<I> </I>0.05). The reasons for HSCT were active disease after eight wk of initial treatment (n = 9), relapsed disease (n = 5), and FHL (n = 5). Fourteen patients are currently alive without disease after HSCT, four patients died of treatment-related events (infection in two and graft failure in two) at early post-transplant period, and one patient died of relapse at one yr post transplantation. The survival of patients who were transplanted because of active disease after eight wk of initial treatment was worse compared to those patients who had inactive state at that time (60.6% vs. 100%, respectively, p<I> </I>=<I> </I>0.06). Of the four patients who received transplants using cord blood, three died of graft failure (n = 2) and relapse (n = 1). The five-yr probability of survival after HSCT according to the donor type was 85.7% for the MRDs (n = 6), 87.5% for the MUDs (n = 8), and 40% for the MMUDs (n = 5) (p<I> </I>=<I> </I>0.03). Other variables such as age, CNS involvement at the time of diagnosis, the etiology of HLH (familial or secondary), and the conditioning regimens had no influence on the five-yr OS of the HLH patients who underwent HSCT. HSCT improved the survival of the patients who had familial, relapsed, or severe and persistent SHLH in the Korean nation-wide HLH registry. Although numbers were small, these results are similar to other reports in the literature. The disease state after initial treatment, the stem cell source of the transplant, and the donor type were the important prognostic factors that affected the OS of the HLH patients who underwent HSCT.</P>
Umbilical Cord Blood Transplantation
Ahn, Hyo Seop,Shin, Hee Young The Korean Association of Immunobiologists 2003 Immune Network Vol.3 No.2
The number of umbilical cord blood transplantation is increasing worldwide as it has expanded the ability of the transplantaion community to meet the growing needs of their patients. Clinical data over the last decade show promising results in transplantation using both related as well as unrelated cord bloods. Cord blood banks are essential for the clinical use for transplantation and are now established around the world with the major efforts to standardize banking in collection, processing and distribution of cord blood for providing the highest quality stem cells for the patients. In Korea, Medipost, Histostem and some regional cord blood banks were established some years ago and collected thousands of cord blood for public but it had some limitations and was not expanded as the cord blood transplantation was not covered by medical insurance. Recently with the change in the policy of medical insurance to cover the cord blood transplantation, several venture companies are showing great interests in cord blood banking and trying to establish private cord blood banks in Korea. This review article discusses the current status of cord blood transplantaion and also the clincial use of stem cells from cord blood.