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한국인 음주자들의 혈청 Gamma Glutamyl Transferase 활성도에 관한 연구
金輝俊,安智榮,金昌世 순천향대학교 1992 논문집 Vol.15 No.2
The enzyme r-glutamyl transpeptidase(GGT) catalyzes the hydrolysis of r-glutamyl peptides such as glutathione and the transfer of their r-glutamyl moieties to amino acids and peptides. Since GGT was discovered in 1950 by Hanes et al., it has been established as useful supportive liver function test in various hepatobiliary diseases. Since Zein et al. found in 1970 that serum GGt activities were markedly increased in chronic alcoholism, even though both transaminase and alkaline phosphatase(ALP) being normal, a number of studies have shown a elvations of GGT in alcoholism and good correlation between GGT and amount of alcohol intake. Recently, it has been suggested that serum GGT activity may have a value as a sereening test for alcoholism. This study was conducted on 459 male adults who were examined periodically for physical checkup at Chunan hospital of Soonchunhyang University College of Medicine in October, 1991, with structural questionaire about their drinking habits. Among 459 male adults serum GGT was determined in 236 healthy men consisted of 40 teetotalers and 196 drinkers assessed by history taking, physical examination, and liver function test. This study was attempted with following objectives : 1) to investigate a correlation between serum GGT activity and amount of alcohol intake(grams of pure ethanol per week) and between serum GGT activity and duration of alcohol intake by years, and 2) to investigate whether increased serum GGT activity reflects amount of alcohol intake and duration. The result obtained are as follows; 1) The means of serum GOT in 40 teetotalers and 196 healthy drinkers were 24.8±6.0 U/L and 25.1±5.3 U/L, respectively. The means of two groups showed no statistically significant difference at p >0.05. 2) The means of serum GPT in 40 teetotalers and 196 healthy drinkers were 23.7±8.2 U/L and 22.5±7.3 U/L, respectively. The means of two groups showed no statistically significant difference at p>0.05. 3) The means of serum GGT in 40 teetotalers and 196 healthy drinkers were 24.3±7.3 U/L and 38.9±20.3 U/L, respectively. The mean of serum GGT in healthy drinkers is higher than the mean of serum GGT in teetotalers. The means of two groups showed statistically significant difference at p<0.05. 4) In 196 healthy drinkers the increase of serum GGT activity was paralleled with increasing alcohol intake. Means of serum GGT activities of 5 groups classified by amount of alcohol intake showed statistically significant difference at p<0.05. But serum GGT activity was increased only in long-standing frinkers over 20 years according to duration of alcohol intake. 5) The probability of being a heavy drinker was increased with increasing serum GGT activity and presumably increased to 60% at 80U/L or more of serum GGT activity. 6) Serum GGT activity showed statistically significant correlation with amount of alcohol intake(r=0.3237) and weak correlation with duration of alcohol intake(r=1.1971).
항히스타민제의 대리결과변수로서 히스타민에 의한 피내주사반응 유용성에 대한 고찰
한나영, 송병정, 백현문, 정에벤, 유영훈, 전지현, 구성우, 윤휘열, 권광일 충남대학교 약학대학 의약품개발연구소 2017 藥學論文集 Vol.32 No.-
In this study, it is reviewed that histamine-induced wheal and flare responses are potential sur-rogate endpoints for predicting the clinical effects of antihistamines in patients with allergic skin diseases. Histamine plays an important role in allergic response by inducing degranulation of mast cells due to allergen exposure and mediating the inflammatory reaction. Thus, suppression of histamine-induced wheal and flare has been noted as surrogate markers for efficacy of Hl receptor antagonists. In addition, allergy skin prick test and intradermal test using histamine have been used to diagnose the histamin-induced allergic reaction. However, it has been well known that allergic diseases are not only mediated by histamine. but also by var-ious immunological inflammatory responses. Previous studies reported that there is a lack of evidence about the correlation between antihistamines to predict clinical efficacy and antihistamine efficacy, although hista-mine-induced wheal and flare responses may be useful indicators of the dose-response relationship. In con-clusion, the evaluation for the suppression of wheal and flare after histamine injection is reasonable for de-termining the treatment of allergic simple skin diseases, but there is a limit to evaluate the efficacy in com-plex inflammatory diseases mediated IgE or T cells, or other immune complex. Therefore, further studies are needed to identify additional surrogate endpoints to predict the therapeutic effect of antihistamines in other inflammatory diseases such as allergic rhinitis, atopic conjunctivitis, allergic asthma, and so on.
( Hwi-geon Yun ),( Dong-jun Kim ),( Ji-hoon Lee ),( Ji-in Ma ),( Won-seok Gwak ),( Soo-dong Woo ) 한국잠사학회 2017 International Journal of Industrial Entomology Vol.35 No.1
The two-spotted spider mite (Tetranychus urticae ) has sustained damage on more than 200 host plants worldwide. Many farmers have relied on chemical acaricides to control mite, but the abuse of acaricides has caused serious resistance to mite. To overcome this problem, microbial control using entomopathogenic fungi have been studied. Entomopathogenic fungi have been an important role against the control of pest, and most of their culture products have been demonstrated to have virulence against pest population. In this study, we evaluated and compared the virulence of culture filtrates, aerial conidia and blastospores of selected Metarhizium anisopliae 4-2 and Beauveria bassiana 2R-3-3-1, respectively, among two-spotted spider mite-pathogenic fungi. As a result, the virulence was confirmed in all treatments, and the accumulated mortality rates were between 77 and 100% within 7 days. Especially, treatment with the fungal culture filtrate alone exhibited quite high virulence, and combined treatment with aerial conidia or blastospores enhanced activity. However, the median lethal time of treatments was not significantly different. When two isolates were compared, M. anisopliae 4-2 showed higher virulence than B. bassiana 2R-3-3-1. These results suggest that the selected two fungal isolates and their culture products could be used effectively for the control of two-spotted spider mite.
Construction of hyper baculovirus expression vector by the optimization of enhancer factors
Ji Hoon Lee,Won Seok Gwak,Ji In Ma,Hwi Geon Yun,Dong Jun Kim,Soo Dong Woo 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The baculovirus expression vector system (BEVS) is an effective and widely used system for the production of recombinantproteins in insect cells or larvae. However, the expression efficiency of recombinant proteins using the polyhedrin promotercould not acquire the protein yields observed for native polyhedrin. In this study, we tried to develop hyper expressionvector by the optimal combination of previously reported various enhancer factors. The selected enhancer factors for optimalexpression consists homologous region5 (hr5), VP39 promoter and burst sequences. Seven recombinant viruses were madeto compare EGFP expression level. Each recombinant viruses showed different expression levels respectively, and themost of expression level was observed with higher than those of the previous vectors. This study suggests a new optionfor hyper expression of useful recombinant protein using the BEVS.
Hwi Geon Yun,Dong Jun Kim,Ji Hoon Lee,Ji In Ma,Won Seok Gwak,Soo Dong Woo 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The two-spotted spider mite, Tetranychus urticae, and gray mold disease caused by Botrytis cinerea, are importantpest and plant disease. To control these, many people have been relied on chemical methods for a long time. However,their continuous use has resulted in resistance of pest and disease. To surmount or avoid these problems, we evaluatedantifungal activity of the selected fungi with high virulence to mite to explore the potential for the dual control of notonly T. urticae but also B. cinerea. To maximize the use of spores and cultural filtrates, the virulence to mite was evaluatedusing culture products, and effective culture condition was investigated against blastospore production and antifungal activity.Consequently, the 2 fungal isolate selected in this study were confirmed to have diverse potential and would be usedeffectively for dual control agents against the two-spotted spider mite and plant diseases