• Journal of Microbiology and Biotechnology
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• 제14권3호
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• pp.570-575
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• 2004

Three different strains of carotenoid accumulating XantlwphyUomyces dendrorhous mutants, JH1, JH2, and JH3, were isolated by NTG (N-methyl-N'-nitro-N-nitrosoguanidine) mutagenesis, which might potentially be useful for animal feed as well as for studies on the regulation and biosynthesis of astaxanthin. Mutants were selected based on the capability of growth and carotenoid production on the YM agar plate containing chemical inhibitor, $\beta$-ionone. Astaxanthin-overproducing mutant JH1 produced 4.032 mg astaxanthinlg dry cell weight, and this value was about 15-folds higher than that of wild-type. $\beta$-Carotene-overproducing mutant JH2 produced 0.273 mg $\beta$-carotene/g dry cell weight, and this was 4-folds increase from that of wild-type. In contrast, JH3 was a white-colored mutant that was unable to produce carotenoid pigment.

• Journal of Acupuncture Research
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• 제23권5호
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• pp.167-175
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• 2006

Objectives : We studied the effects of Radix Asteris herbal acupuncture solution (RAHAS) on the type I hypersensitivity. Methods : In vivo, we measured compound 48/80 induced active systemic anaphylactic shock, anti-DNP IgE induced passive cutaneous anaphylaxis (PCA) and acetic acid induced microvascular permeability using ICR mice. In vitro, we showed effects on cytotoxicity and ${\beta}$-hexosaminidase release from RBL-2H3 cells. Results : In vivo, RAHAS pretreatments at $BL_{13}$ and optional points inhibited active systemic anaphylactic shock induced by compound 48/80 and microvascular permeability increased by acetic acid. PCA was only inhibited by RAHAS pretreatments at $BL_{13}$. In vitro, RAHAS treatments inhibited ${\beta}$-hexosaminidase release. Conclusion : These results suggest that RAHAS may be beneficial in the prevention of type I hypersensitive inflammatory response.

• Korean Journal of Acupuncture
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• 제23권3호
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• pp.111-122
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• 2006

Objectives : We studied the effects of Scutellariae Radix pharmacopuncture solution (SRHAS) on the type 1 hypersensitivity. Methods : In vivo, we measured compound 48/80-induced active systemic anaphylactic shock using ICR mice and anti-DNP IgE-induced passive cutaneous anaphylaxis (PCA) using Sprague Dawley rats. In vitro, we showed effects on cytotoxicity and ${\beta}-hexosaminidase$ release from RBL-2H3 cells. Results : In vivo, SRHAS pretreatments (100% or 50%) at BL13 inhibited active systemic anaphylactic shock induced by compound 48/80. PCA was only inhibited by pretreatments of SRHAS at optional points. In vitro, $0.1{\sim}2%$ SRHAS treatments did not affect cell viability while ${\beta}$-hexosaminidase release was significantly inhibited. Conclusions : These results suggest that SRHAS may be beneficial in the inhibition of type I hypersensitive inflammatory response.

• 보건교육건강증진학회지
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• 제28권4호
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• pp.51-61
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• 2011

Objectives: The main purpose of this study was to examine factors associated with depression of middle school students in relation to self-esteem, type A behavior pattern, and locus of control. Methods: A survey was administered to a convenience sample of 309 middle school students. The data analysis procedure included frequency distribution, t-test, ANOVA, Pearson correlation coefficients, and stepwise multiple regression using depression as the dependent variable. Results: The prevalence of depression was 27.2%. Stepwise multiple regression revealed that the factors such as self-esteem(${\beta}$=0.422, p<0.001), type A behavior pattern(${\beta}$=0.166, p<0.001), and locus of control(${\beta}$=-0.165, p<0.001) turned out to be significant affecting factors. Forty nine percent of variance in depression was explained by these factors(40% of variance by self-esteem). Conclusions: The findings suggest that personal internalizing variables should be considered when developing mental health education program to prevent the occurrence of depression for middle school students.

• 지역사회간호학회지
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• 제28권2호
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• pp.216-225
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• 2017

Purpose: The purpose of the study was to analyze the effects of self-care behavior, empowerment, and social support on glycosylated hemoglobin in patients with type 2 diabetes. Methods: The data were collected during the period of July 1 to July 31, 2016. In total, 172 participants were recruited from outpatients who had been diagnosed with type 2 diabetes at a health care center, a health promotion center at National Health Insurance Corporation, and a tertiary hospital. Statistical data were analyzed with SPSS 20.0 using frequency analysis, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficients, and hierarchical regression analysis. Results: The study results showed that self-care behavior (${\beta}=-.34$, p<.001), empowerment (${\beta}=-.34$, p<.001), and social support (${\beta}=-.20$, p=.018) were found to be influential factors affecting glycosylated hemoglobin, with an overall descriptive power of 69%. Conclusion: Self-care behavior, empowerment, and social support are considered to be important factors in blood glucose management for the patients with type 2 diabetes. Therefore, self-caring blood glucose programs and internal synchronizing education through social support and empowerment need to be improved.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1997년도 춘계학술대회
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• pp.116-116
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• 1997

Complex formation of practically insoluble dexamethasone dipropionate (DDP) with ${\beta}$-cyclodextrin (${\beta}$-CD), dimethyl-${\beta}$-cyclodextrin (DMCD), trimethyl-${\beta}$-cyclodextrin (TMCD), 2-hydroxypropyl-${\beta}$-cyclodextrin (HPCD) and sulfobutyl ether ${\beta}$-cyclodextrin (SBCD) in water was investigated by solubility method at various temperatures. Water solubility of DDP was found to be 1.78 $\mu\textrm{g}$/$m\ell$ at 37$^{\circ}C$. Propylene glycol (PG)-water cosolvent increased the solubility of DDP, but the solubilization was not sufficient (8.93 $\mu\textrm{g}$/$m\ell$ in 20% PG). The addition of CD markedly increased the solubility of DDP in water, and A$\sub$L/ type phase solubility diagrams were obtained with ${\beta}$-CD, TMCD, HPCD and SBCD, where the apparent stability constants of the soluble complexes at 25$^{\circ}C$ were determined to be 1388, 216, 1054, and 1992 M$\^$-1/, respectively. However, DMCD remarkably increased the solubility of DDP, and showed an A$\sub$P/ type diagram, suggesting that DMCD forms a soluble complex of high order with DDP. The stability constant for the DDP-DMCD complex at 25$^{\circ}C$ was determined to be 19132 M$\^$-1/. The thermodynamic parameters were calculated for the inclusion complex formation in aqueous solution. CD (1${\times}$10$\^$-2/M) remarkably decreased the partition coefficients of DDP between isopropyl myristate/water in the order of TMCD < ${\beta}$-CD < HPCD < SBCD < DMCD, and in squalane/water system in the order of HPCD < TMCD < ${\beta}$-CD < DMCD < DMCD $\leq$ SBCD. This finding represents that, in a o/w type cream, cyclodextrin complexation with DDP may result in high concentration of DDP in aqueous phase. The permeation of DDP through a cellophane membrane was highly suppressed by the addition of CD, and the degree of suppression was different among CDs, indicating that CD may control the skin permeation of DDP. The dissolution rates of solid dispersions with CDs were much faster than those of drugs alone and corresponding physical mixtures. All DDP-CD solid dispersions exceeded the equilibrium solubility. Consequently these results suggest that complex formation of DDP with CDs may provide useful means to markedly enhance the solubility, and CDs are useful in the semi-solid preparations such as creams and gels for topical application.

• 대한화장품학회지
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• 제42권2호
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• pp.163-171
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• 2016

스테로이드 호르몬인 glucocorticoid (GC)는 glucocorticoid receptor (GR)와 결합하여 염증 유전자의 발현을 억제함으로써 강력한 항염 효과를 준다. 따라서 GR을 활성화하는 GC 제제들이 개발되어 피부염의 치료제로 사용되어 왔다. 그러나 이러한 GC 제제들은 피부 장벽 기능 저하, 진피층 두께 감소 등의 부작용을 유발하여 피부를 손상시키고 피부 노화를 유발한다. 특히 GC 성분은 11 beta-hydroxysteroid dehydrogenase type 1 ($11{\beta}$-HSD1)에 의해 활성화되어 GR의 활성을 높이는 것으로 보고되어 있다. 이에 본 연구에서는 스테로이드 제제인 dexamethasone에 의해 증가된 $11{\beta}$-HSD1의 발현을 효과적으로 억제할 수 있는 천연 소재를 발굴하고자 하여, 초두구 추출물에서 유래한 alpinetin에서 유의한 효과가 있음을 확인하였다. Alpinetin은 진피 섬유아세포에서 dexamethasone에 의해 발현이 증가한 $11{\beta}$-HSD1를 억제함과 동시에 GR의 활성 및 cortisol의 생성을 감소시켰다. 또한 사람 섬유아세포 및 3D skin model을 이용한 평가에서, alpinetin은 dexamethasone에 의한 콜라겐 감소와 진피층 두께 감소를 효과적으로 회복시켰다. 따라서, 본 연구 결과로부터 alpinetin은 $11{\beta}$-HSD1의 발현 증가에 의한 피부 스트레스 및 피부 노화를 효과적으로 예방할 수 있을 것으로 사료되었다.

• 한국잠사학회:학술대회논문집
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• 한국잠사학회 2003년도 International Symposium of Silkworm/Insect Biotechnology and Annual Meeting of Korea Society of Sericultural Science
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• pp.145-146
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• 2003

Overproduction of transforming growth factor (TGF)-$\beta$l has been implicated in the pathogenesis of fibrotic diseases. TGF-$\beta$l plays a crucial role in the accumulation of extracellular matrix (ECM) in human and experimental glomerular diseases. However, it remains unclear whether inhibition of TGF- $\beta$l overproduction would suppress TGF- $\beta$l induced ECM accumulation. To inhibit the overproduction of TGF- $\beta$l in experimental glomerulonephritis induced by anti-Thy 1.1 antibody, we introduced antisense oligodeoxynucleotides (ODN) fur TGF- $\beta$l into the nephritic kidney by the HVJ-liposome-mediated gene transfer method. (omitted)

• 한국미생물·생명공학회지
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• 제23권6호
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• pp.687-694
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• 1995

Alkalophilic Bacillus sp. HJ-12 producing $\beta $-1, 4-D-arabinogalactanase was isolated from soil in the alkalic condition, pH 10.0. $\beta $-1, 4-D-arabinogalactanase was maximaly produced in the medium consisting of 2% soybean arabinogalactan (SAG), 0.5% yeast extract, 0.5% polypeptone, 0.5% NaCl, 0.1% K$_{2}$HPO$_{4}$, 0.02% MgSO$_{4}$$\cdot $7H$_{2}$O, 0.1% Na$_{2}$CO$_{3}$ under the aerobic condition (pH 8.2). $\beta $-1, 4-D-arabinogalactanase is inducible enzyme so that its activity has been increased 10 fold in the SAG medium than in the glucose medium. Through the ammonium sulfate precipitation, DEAE- Sephadex A-50 ion chromatography, and Sephadex G-75 gel chromatography procedures, this enzyme was purified with a single protein of 11% vield and 110 fold's purity. $\beta $-1, 4-D-arabinogalactanase is endo type enzyme producing ollgosaccharide from SAG.

• Mycobiology
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• 제41권3호
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• pp.159-163
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• 2013

A chemical mutagenesis technique was employed for development of mutant strains of Sparassis crispa targeting the shortened cultivation time and the high ${\beta}$-glucan content. The homogenized mycelial fragments of S. crispa IUM4010 strain were treated with 0.2 vol% methyl methanesulfonate, an alkylating agent, yielding 199 mutant strains. Subsequent screening in terms of growth and ${\beta}$-glucan content yielded two mutant strains, B4 and S7. Both mutants exhibited a significant increase in ${\beta}$-glucan productivity by producing 0.254 and 0.236 mg soluble ${\beta}$-glucan/mg dry cell weight for the B4 and S7 strains, respectively, whereas the wild type strain produced 0.102 mg soluble ${\beta}$-glucan/mg dry cell weight. The results demonstrate the usefulness of chemical mutagenesis for generation of mutant mushroom strains.