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Yan, Bing Chun,Park, Joon Ha,Kim, Sung Koo,Choi, Jung Hoon,Lee, Choong Hyun,Yoo, Ki-Yeon,Kwon, Young-Geun,Kim, Young-Myeong,Kim, Jong-Dai,Won, Moo-Ho Kluwer Academic/Plenum Publishers 2012 Cellular and molecular neurobiology Vol.32 No.8
<P>In the present study, we investigated neuronal death/damage in the gerbil hippocampal CA1 region (CA1) and compared changes in some trophic factors, such as brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF) and vascular endothelial growth factor (VEGF), in the CA1 between the adult and young gerbils after 5 min of transient cerebral ischemia. Most of pyramidal neurons (89%) were damaged 4 days after ischemia-reperfusion (I-R) in the adult; however, in the young, about 59% of pyramidal neurons were damaged 7 days after I-R. The immunoreactivity and levels of BDNF and VEGF, not GDNF, in the CA1 of the normal young were lower than those in the normal adult. Four days after I-R in the adult group, the immunoreactivity and levels of BDNF and VEGF were distinctively decreased, and the immunoreactivity and level of GDNF were increased. However, in the young group, all of their immunoreactivities and levels were much higher than those in the normal young group. From 7 days after I-R, all the immunoreactivities and levels were apparently decreased compared to those of the normal adult and young. In brief, we confirmed our recent finding: more delayed and less neuronal death occurred in the young following I-R, and we newly found that the immunoreactivities of trophic factors, such as BDNF, GDNF, and VEGF, in the stratum pyramidale of the CA1 in the young gerbil were much higher than those in the adult gerbil 4 days after transient cerebral ischemia.</P>
Yoo,Sang-jin,Cha,Young-han 한국산업경영학회 2002 한국산업경영학회 발표논문집 Vol.2002 No.2
In this study, an effective methodology to introduce knowledge management system into the retail business is suggested by overall analysis of examples those were carried out in business area. Different from existing studies, which focus on theoretical aspect only, this study focuses its attention on theoretical & practical aspect simultaneously and tries to find a long-term & integrated knowledge management strategy. With examining the examples of knowledge management, this study deals with the fundamental conception, the procedure and the organization of knowledge management. Moreover, this study practically analyzes the knowledge management system of the company named "H", one of the retail business companies. By clarifying the problems, which is involved in the knowledge management process of the above company, this study suggests an improvement methodology to introduce and settle down knowledge management system into retail business company for the future. This study has good results in the viewpoint that it gives a definite direction of knowledge management introduction. However, there is some limitation such as the insufficiency of examples and the omission of documented analysis. Therefore, this study leaves some task to be achieved in the future.
Haemophilus influenzae Type b 에 대한 급성 후두염의 치료 경험 2 례
이수영(Soo Young Lee),유상호(Sang Ho Yoo),이기선(Ki Sun Lee),홍미애(Mi Ae Hong),김순남(Soon Nam Kim) 대한소아알레르기호흡기학회 1998 소아알레르기 및 호흡기학회지 Vol.8 No.1
Epiglottitis is an uncommon but potentially life threatening infectious disease in young children. And it is rapidly progressing cellulitis of the epiglottis and adjacent structures that has the potential for causing abrupt, complete airway obstruction. The most common cause of acute epiglottitis is Haemophilius influenzae type b (Hib), therefore in USA, the acute epiglottitis is seen less commonly since the wide spread use of immunization against Hib. In Korea, there has been no report of acute epiglottitis caused by known bacterial organism, and a little investigation of the effects of the immunization against Hib, or Hib related respiratory diseases. In this report, we describe two cases of acute epiglottitis caused by Hib, occurred in non-immunized young-male children admitted to Ajou University Hospital. They had visited to the emergency center of Ajou University hospital with the complaints of acute fever, drooling, dysphagia and severe respiratory difficulties. In both cases, we observed the cherry-red colored, severely swollen epiglottis by the direct laryngoscopic examination. Hib was cultured in blood samples from both two cases, and the patients treated successfully by the 3 days of endotracheal intubation and proper antibiotics therapy without any complications such as pneumonia, meningitis, osteomyelitis, or pericarditis.
Comparative Morphological Characteristics of Mangrove Oysters
Yoo, Sung Kyoo,Ryu, Ho Young 한국수산학회 1984 한국수산과학회지 Vol.17 No.3
Three Kinds of mangrove oysters, highly commercial species in tropical waters, were collected in Cocineta Bay, Venezuella in 1976, at the mouth of Hoffman River, Liberia in 1978 and in West Coast of Benzina, Indonesia in 1984. Crassostrea rhizophorae from Venezuella showed some characteristics of most rounded shell form and greatest shell capacity. In addition, he fatness condition of 9.63% topped tht other two species. Crassostrea tulipa inhabiting Liberia was most elongated in outer shell form. Although shell capacity of this species was almost similar to Crassostrea rhizophorae, it took up intermediate position in fatness condition with 8.15%. Crassostrea belcheri from Indonesia, just rounded like C. rhizophorae, showed the biggest values in total weight and outer shell weight but fatness the least with 6.62%
유빈(Bin Yoo),정희순(Hee Soon Chung),한성구(Sung Koo Han),심영수(Young Soo Shim),김건열(Keun Youl Kim),한용철(Yong Chol Han) 대한내과학회 1987 대한내과학회지 Vol.32 No.5
N/A Carcinoma of the lung is generally considered as a disease of middle age and elderly. But lung cancer is now so prevalent that patients below the age of 40 years must be increaseing. We reviewed the records of 483 lung cancer patients who had been diagnosed in the department of internal medicine of Seoul National University Hospital from March 1984 to February 1986, and the clinical features of the young patients under 40 years were compared with those of the control group patients over 40 years. The results are summarized as follows; 1) Seven percent of 34 cases of 483 patients were belong to the young age group patients (less than 40 years). The youngest patient was 22 years old. 2) Male to female ratios of young group and the control group were 3.25:1, 5.9:1 respectively (p>0.05). 3) The mean duration of symptoms from the onset to the definite diagnosis was 2.7 months in young group and 2.3 months in the control group (p>0.3). 4) The most common initial symptoms in the young group were dyspnea (26.5%), hemoptysis (20.5%), cough or sputum (20.5/), chest pain (8.8%) which were also the most common initial symptoms in the control group. (p>0.25) The incidence of superior vena cava syndrome was significantly higher in the young age group (23.5%) than in the control group (7.1%) (p<0.05). 5) In the young group, the proportion of adenocarcinoma (35%) was significantly higher than that of the control group (18%) (p<0.05). 6) The proportion of smoker was significantly lower in the young age group (13 cases, 38.2%) than in the control group (77.7%). The histological type of 13 smokers of the young group was squamous cell carcinoma in 12 cases and adenocarcinoma in 1 case. 7) All non-small cell lung cancer patients in young group were belong to stage III. 8) Distant metastasis rate of the young group (74%) was significantly higher than that of the control group (54.8%) (p<0.05).
Yoo Chul Kim,Young Kyu Hong,Se Jin Oh,Seung Min Oh,Won Hyun Ji,Jae E. Yang,Sung Chul Kim 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.2
Heavy metal pollution has been a critical problem in agricultural field near at the abandoned metal mines and chemical amendments are applied for remediation purpose. However, biological activity can be changed depending on chemical amendments affecting crop productivity. Main purpose of this research was to evaluate biological parameters after applying chemical amendments in heavy metal polluted agricultural field. Result showed that soil respiration (SR) and microbial biomass carbon (MBC) were changed after chemical amendments were applied. Among three different amendments, lime stone (LS), steel slag (SS), and acid mine drainage sludge(AMDS), AMDS had an effect to increase SR in paddy soil. Comparing to control (93.98-170.33 mg kg<SUP>-1</SUP> day<SUP>-1</SUP>), average of 30% increased SR was observed. In terms of MBC, SS had an increased effect in paddy soil. However, no significant difference of SR and MBC was observed in upland soil after chemical amendment application. Overall, SR can be used as an indicator of heavy metal remediation in paddy soil.
TNF-like ligand 1A is a promising biomarker of disease activity in rheumatoid arthritis
( Yoo Jin Hong ),( Yun Jong Lee ),( Ki Chul Shin ),( Byoong Yong Choi ),( Sung Hae Chang ),( Hae Won Kim ),( In Ah Choi ),( Eun Young Lee ),( Eun Bong Lee ),( Yeong Wook Song ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1
Background: Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation of multiple joints. TN -like ligand 1A (TL1A), a ligand belonging to the TNF superfamily, is expressed by endothelial cells, lymphocytes, monocytes and plasma cells. These are also the key cell lineages participating in the pathogenesis of RA. Moreover, TL1A is up-regulated by proinflammatory cytokines TNF- and IL-1. We thereby examined the serum and synovial fluid levels of TL1A in patients with RA. In addition, we investigated the relationship between serum TL1A concentration and clinical parameters in RA patients. Methods: Serum samples were obtained from 232 patients with RA and 29 with osteoarthritis (OA). Thirty-eight and 27 synovial fluid (SF) samples were collected from respective group of patients. Additional 45 serum samples before and after (14 weeks) anti-TNF- treatment were collected from RA patients. TL1A concentrations were measured by ELISA. Clinical parameters were acquired at the time of sampling. Results: Serum concentrations of TL1A in RA patients were significantly higher than those in OA patients (mean±SD, 1327.4±3858.8 pg/ml vs. 150.3±269.6 pg/ml, p<0.0001). The SF levels of TL1A were elevated in patients with RA compared with those in OA (965.7±1617.2 vs. 271.4±238.9, p=0.013). Levels of TL1A were significantly increased in SF than serum in matched samples (RA; p=0.006, OA; p<0.0001). Serum levels of TL1A decreased substantially with anti-TNF- treatment (p=0.002). Serum levels of TL1A correlated well with DAS28-ESR (r=0.170, p=0.021), DAS28-CRP (r=0.166, p=0.037), SDAI (r=0.201, p=0.016), CDAI (r=0.195, p=0.011) and rheumatoid factor positivity (r=0.876, p=0.044). Conclusion: Serum and SF levels of TL1A were significantly increased in RA patients compared with OA patients, and correlated well with clinical parameters representing disease activity.Our results support that TL1A could be a potential biomarker in assessing disease activity and treatment response in RA patients.