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정미란,차정단,이영은 한국조리과학회 2005 한국식품조리과학회지 Vol.21 No.1
The antibacterial activities of methanol extract and systematic solvent fractions(-hexane, chloroform, ethyl acetate, and butanol) from Korean common type figs at different ripening stages were tested by the broth dilution method against 8 representative food-poisoning bacteria- : L. monocytogenes, S. aureus, S. enteritidis, E. cols 0157:H7, E. cols, Y. enterocolitico, V. parahaemolvticus, and S. ttphimurium. The methanol extracts of unripened Ⅰ and Ⅱ showed stronger activity than that of the ripened figs especially against L. monocytogenes, S. enteriridis, E. toll 0157:H7, V. parahaemolvticus and S. nphimurium in 10 mg/mL. The systematic solvent fractions showed stronger antibacterial activities than the methanol extract, even at the lower concentrations. The hexane fraction of ripened Figs showed higher growth inhibition than those of unripened Ⅰ and Ⅱ against L. monocytogenes, E. colt 0157.117, Y. enterocolitica and V. parahaemolvtieus. The chloroform fraction showed strong antibacterial activity in all ripening stages against E. soli 0157:H7 and V. parahaemolyticus. The butanol fraction showed better inhibition activity in unripened I and II than in the ripened figs. The hexane and chloroform fractions showed inhibition activity of more than 75% against E. coli 0157:117, V. parahaemohvicus in 0.5 mg/mL. Each fraction showed a little different antibacterial activity according to the ripening stages of the fruits and the tested strains. Especially, rigs in the unripened II stage revealed superior activity relatively and the hexane and chloroform tractions revealed the strongest activity, followed by the butanol fraction, while the ethylacetare and water fractions hardly showed any activity.
정미란,차정단,윤순일,한종현,이영은 동아시아식생활학회 2005 동아시아식생활학회지 Vol.15 No.1
Fig(Ficus carica L.) which belongs to Moraceae family has been used as digestion promoter, cure for ulcerative inflammation and eruption in Korea. Figs have very short preservation period and can be kept only 1 week even in the refrigeration system. The possibility of wine-making from Korean figs was tested by analyzing the fermentation characteristics, proximate analysis and free sugar contents of wine made of slices with 20% sugar addition. Ethanol fermentation of the figs by Saccharomyces cerevisiae was done rapidly. The ethanol contents, pH, total acidity and sugar content were 12.1%, 3.91, 0.42% and 9.9 °Brix, respectively. The results from the sensory evaluation were as follows. The wine made from the sliced figs were better than that from fig juices in their sensory scores. The wine made with frozen figs was not different from that made with fresh ones. To improve the quality of wine, the addition of dried leaf powder in the concentration of 100 ppm were tried and found it was superior to the one made without leaf.
Potassium alum과 비우식성 감미료의 병용이 Streptococcus mutans의 성장에 미치는 영향
김윤정,차정단,김지영,김강주,이흥수 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.3
Traditionally, Koreans have used potassium alum by mouth rinse when they suffered from stomatitis. This study was carried out to investigate the combined effect of potassium alum with aspartame, sorbitol and xylitol on the growth of Streptococcus mutans (S. mutans). The relative growth ratio of S. mutans JC-2 cultured at different concentrations of potassium alum and different concentrations of aspartame, sorbitol and xylitol was examined. The combined effect of different concentrations of potassium alum with 0.5% and 10.0% of aspartame, sorbitol and xylitol was examined. The lowest minimum inhibitory concentration of potassium alum was 5.0mg/ml against S. mutans JC-2. The relative growth ratio of potassium alum on S. mum JC-2 was affected at the concentration of 2.0mg/ml. The growth of S. mutans JC-2 decreased at the concentration of 10.0% of aspartame and sorbitol. Also, a combination of potassium alum and sugar substitutes was more effective against S. mum than the use of one sugar substitute alone. The inhibitory effect of potassium alum and sugar substitutes on S. mutans may be an important mechanism of caries prevention by potassium alum.
Cha, Jeong-Dan,Moon, Sang-Eun,Kim, Hye-Young,Lee, Jeong-Chae,Lee, Kyung-Yeol Marcel Dekker 2009 Immunological investigations Vol.38 No.6
<P>Artemisia capillaris (A. capillaris) is used in traditional Korean herbal medicine for its believedanti-inflammatory activities. Previous studies have suggested that the essential oil of A. capillaris contains the active components responsible for its pharmacological effect, even though the mechanism for its action is unclear. This study examined the inhibitory effects of the essential oil of A. capillaris on the lipopolysaccharide (LPS)-induced production of nitric oxide (NO) and prostaglandin E(2) (PGE(2)). The essential oil significantly inhibited the production of NO in the LPS-stimulated RAW 264.7 macrophages, which was mediated by the down-regulation of inducible NO synthase (iNOS) expression but not by its direct cytotoxic activity. The essential oil also blocked the secretion of PGE(2) and the expression of cyclooxygenase-2 (COX-2) in the LPS-stimulated cells. Western blot analysis showed that the essential oil inhibited the phosphorylation of IkappaB-alpha, nuclear translocation of p65, and subsequent activation of NF-kappaB. In addition, the essential oil suppressed the LPS-stimulated activation of mitogen-activated protein kinases (MAPKs) as well as the AP-1 DNA-binding activity. Moreover, MAPK inhibitors significantly reduced the LPS-induced production of NO and PGE(2). Collectively, we suggest that the oil inhibits the expression and production of inflammatory mediators by blocking the MAPK-mediated pathways and inhibiting the activation of NF-kappaB and AP-1.</P>
Cha, Jeong‐,Dan,Li, ShengJin,Cha, In‐,Ho Wiley Subscription Services, Inc., A Wiley Company 2011 Head & neck Vol.33 No.5
<P><B>Abstract</B></P><P><B>Background</B></P><P>Increased cytoplasmic HuR expression has been noted in several cancer types, where it may contribute to the increased cyclooxygenase‐2 (COX‐2) expression observed during tumorigenesis and metastasis.</P><P><B>Methods</B></P><P>To assess the correlation between COX‐2 and HuR in oral squamous cell carcinoma (OSCC), the expression patterns of HuR and COX‐2 were assessed via immunohistochemistry analyses of 103 OSCC samples.</P><P><B>Results</B></P><P>Cytoplasmic HuR expression was significantly associated with COX‐2 expression (<I>p</I> < .025) and lymph node metastasis (<I>p</I> < .050) and distant metastasis (<I>p</I> < .025). In multivariate analysis, cytoplasmic HuR expression was identified as an independent prognostic parameter for reduced overall survival. The inhibition of HuR expression by siRNA or leptomycin B (LMB) caused a reduction in the inducibility of COX‐2 in oral cancer cells.</P><P><B>Conclusion</B></P><P>Our results indicate that the cytoplasmic expression of HuR is associated with COX‐2 expression in OSCCs and HuR can regulate COX‐2 expression in oral cancer cell lines. © 2010 Wiley Periodicals, Inc. Head Neck, 2011</P>
Cha, Jeong-Dan,Lee, Jeong-Ho,Choi, Kyung Min,Choi, Sung-Mi,Park, Jeong Hye Hindawi Publishing Corporation 2014 Evidence-based Complementary and Alternative Medic Vol.2014 No.-
<P>Cryptotanshinone (CT), a major tanshinone of medicinal plant <I>Salvia miltiorrhiza</I> Bunge, demonstrated strong antibacterial activity against clinic isolated methicillin and vancomycin-resistant <I>Staphylococcus aureus</I> (MRSA and VRSA) in this experiment. The CT was determined against clinic isolated MRSA 1–16 with MIC and MBC values ranging from 4 to 32 and 8 to 128 <I><I>μ</I></I>g/mL; for MSSA 1-2 from 16 to 32 <I><I>μ</I></I>g/mL and 64 to 128 <I><I>μ</I></I>g/mL; for VRSA 1-2 from 2 to 4 <I><I>μ</I></I>g/mL and 4 to 16 <I><I>μ</I></I>g/mL, respectively. The range of MIC<SUB>50</SUB> and MIC<SUB>90</SUB> of CT was 0.5–8 <I><I>μ</I></I>g/mL and 4–64 <I><I>μ</I></I>g/mL, respectively. The combination effects of CT with antibiotics were synergistic (FIC index <0.5) against most of tested clinic isolated MRSA, MSSA, and VRSA except additive, MRSA 4 and 16 in oxacillin, MRSA 6, 12, and 15 in ampicillin, and MRSA 6, 11, and 15 in vancomycin (FIC index < 0.75–1.0). Furthermore, a time-kill study showed that the growth of the tested bacteria was completely attenuated after 2–6 h of treatment with the 1/2 MIC of CT, regardless of whether it was administered alone or with ampicillin, oxacillin, or vancomycin. The results suggest that CT could be employed as a natural antibacterial agent against multidrug-resistant pathogens infection.</P>