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임채욱,이극선,오옥희,이현수,임철부 중앙대학교 약학연구소 2000 약학 논총 Vol.14 No.-
The 15 synthesized p-aminosalicylate esters derivatives were evaluated for their antimicrobial activities, in vitro, against Mycobacterium phlei (CACC 75432), Staphylococcus aureus (CHA 78311), Bacillus subtilis (CAUCC 310) and Escherichia coli (P32). Bivalent ligand derivatives (1-6) showed weaker activities than their parent p-aminosalicylate(PAS) in vitro. But some of thiouera derivatives (8 and 10) gave stronger activities against Mycobacterium phlei and Staphylococcus aureus than their parent p-aminosalicylate.
Sun Og Lee,He Kyoung Lim,Kwang Yun Cho,김진철,최경자,Kyoung Soo Jang 한국식물병리학회 2007 Plant Pathology Journal Vol.23 No.2
A total of 39 essential oils were tested for antifungal activities as volatile compounds against five phytopathogenic fungi at a dose of 1 μl per plate. Five essential oils showed inhibitory activities against mycelial growth of at least one phytopathogenic fungus. Origanum vulgare essential oil inhibited mycelial growth of all of the five fungi tested. Both Cuminum cyminum and Eucalyptus citriodora oils displayed in vitro antifungal activities against four phytopathogenic fungi except for Colletotrichum gloeosporioides. The essential oil of Thymus vulgaris suppressed the mycelial growth of C. gloeosporioides, Fusarium oxysporum and Rhizoctonia solani and that of Cymbopogon citratus was active to only F. oxysporum. The chemical compositions of the five active essential oils were determined by gas chromatography-mass spectrometry. This study suggests that both E. citriodora and C. cyminum oils have a potential as antifungal preservatives for the control of storage diseases of various crops.
Lee, Sun-Og,Choi, Gyung-Ja,Jang, Kyoung-Soo,Lim, He-Kyoung,Cho, Kwang-Yun,Kim, Jin-Cheol The Korean Society of Plant Pathology 2007 Plant Pathology Journal Vol.23 No.2
A total of 39 essential oils were tested for antifungal activities as volatile compounds against five phytopathogenic fungi at a dose of 1 ${\mu}l$ per plate. Five essential oils showed inhibitory activities against mycelial growth of at least one phytopathogenic fungus. Origanum vulgare essential oil inhibited mycelial growth of all of the five fungi tested. Both Cuminum cyminum and Eucalyptus citriodora oils displayed in vitro antifungal activities against four phytopathogenic fungi except for Colletotrichum gloeosporioides. The essential oil of Thymus vulgaris suppressed the mycelial growth of C. gloeosporioides, Fusarium oxysporum and Rhizoctonia solani and that of Cymbopogon citratus was active to only F. oxysporum. The chemical compositions of the five active essential oils were determined by gas chromatography-mass spectrometry. This study suggests that both E. citriodora and C. cyminum oils have a potential as antifungal preservatives for the control of storage diseases of various crops.
간성상세포의 수축 및 성장에 대한 Angiotensin 2 수용체 길항제의 억제 효과
백순구 ( Baeg Sun Gu ),조호성 ( Jo Ho Seong ),석기태 ( Seog Gi Tae ),김정민 ( Kim Jeong Min ),이병준 ( Lee Byeong Jun ),최윤종 ( Choe Yun Jong ),김현수 ( Kim Hyeon Su ),이동기 ( Lee Dong Gi ),권상옥 ( Kwon Sang Og ),이건일 ( Lee G 대한소화기학회 2003 대한소화기학회지 Vol.42 No.2
Backgrounds/Aims: This study aimed to investigate the effects of angiotensin II (ANG II) and its receptor antagonist (losartan) on the contraction and growth of HSCs. Methods: HSCs were isolated from Sprague Dawley rat and cultured at various conditions as follows: control, pretreatment of 10(-5) M ANG II, pretreatment of 10(-5) M endothelin, and pretreatment of 10(-5) M ANG II and 10(-6) M losartan. We conducted morphologic analysis with cellular area and length by image analysis system to estimate cell growth in each group. In addition, we measured the change of intracellular calcium currents via electrophysiological methods to evaluate the contractile effect of ANG II and losartan on HSCs. Results: At the fifth day of incubation, the mean cellular area of ANG II-pretreated group and ANG II with losartan-pretreated group were 704.68±22.6 um2 and 332.90±32.6 um2, respectively. This difference was statistically significant (p<0.05). ANG II induced an increase in the intracellular calcium current by 22.0±3.0% compared with basal current level (p<0.05). However, when losartan was pretreated, ANG II did not cause a significant increase in calcium current (3.1±0.8%, p>0.05). Conclusion: ANG II accelerates the contraction and growth of HSCs, while its receptor blocker, losartan, inhibits the contraction and growth of HSCs (Korean J Gastroenterol 2003;42:134-141)