• Title, Summary, Keyword: Immobilization

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Effects of Chungganhaewooltang on Serum Levels of Histamine and Corticosterone and Immune Response after Immobilization-Stress or Cold-Stress in Mice (청간해울탕(淸肝解鬱湯)이 생취에 Immobilization-Stress 및 Cold-Stress 부하후(負荷後) 혈중(血中)Histamine과 Corticosterone 함량(含量) 및 면역능(免疫能)에 미치는 영향(影響))

  • Kang, Bok-Hwan;Jung, Woo-Suk;Kim, Song-Baeg;Yoo, Sim-Keun
    • The Journal of Korean Obstetrics and Gynecology
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    • v.18 no.4
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    • pp.85-105
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    • 2005
  • Purpose : Investigate the effects of Chungganhaewooltang(CHT) on immobilization-stress or cold-stress in C576BL/6J mice. Methods : Male C57BL/6J 30 mice of weighting 18${\pm}$2g, were divided into sixs groups including the immobilization-stress group(5heads), after immobilization-stress CHT oral administration(500mg/kg) groups(5heads), cold-stress group(5heads) and after cold-stress CHT oral administration(500mg/kg) groups(5heads). then we observed changes in the serum histamine and corticosterone level and changes immune system Results : Immobilization-stress or cold-stress increased the serum level of histamine and corticosterone. CHT decreased the serum level of histamine and corticosterone increased by cold-stress. CHT inhibited the release of histamine from mast cells at the concentration of 0.1 mg/ml. In addition, immobilization-stress or cold-stress decreased the cell viability of murine thymocytes and splenocytes. CHT increased the cell viability of thymocytes decreased by immobilization-stress or cold-stress, but did not affect the cell viability of splenocytes decreased by immobilization-stress or cold-stress. Also immobilization-stress or cold-stress increased DNA fragmentation of thymocytes and splenocytes. CHT decreased DNA fragmentation of thymocytes increased by immobilization-stress or cold-stress, but did not affect DNA fragmentation of splenocytes increased by immobilization-stress or cold-stress. Immobilization-stress increased the population of thymic $CD4^+$ cells. CHT decreased the population of thymic $CD4^+$ cells increased by immobolization-stress. Immobilization-stress or cold-stress decreased the population of $B220^+$ cells and increased the population of $thy1^+$ cells. CHT decreased the population of $thy1^+$ cells increased by immobilization-stress or cold-stress. Immobilization-stress or cold-stress increased the population of splenic $CD4^+$ cells and $CD8^+$ cells. CHT decreased the population of splenic $CD4^+$ cells increased by immobolization-stress or cold-stress. Immobilization-stress or cold-stress decreased the production of ${\gamma}-interferon$(IFN) interleukin(IL)-2 and IL-4. CHT enhanced the production of ${\gamma}-IFN$ decreased by immobilization-stress or cold-stress but did not affect the production of IL-2 and IL-4 decreased by immobilization-stress or cold-stress. Furthermore, Immobilization- stress or cold-stress decreased the phagocytic activity of peritoneal macrophages and the production of nitric oxide. CHT enhanced the phagocytic activity and nitric oxide production decreased by cold-stress. Conclusion : CHT may be useful for the prevention and treatment of stress via suppression of serum histamine and corticosterone level and enhancement of immune response.

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Coating Immobilization Using Soy Protein Polymers: Technical Concepts and Importance to Quality

  • Hiscock, Donald F.;Merrifield, Thomas B.
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.5
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    • pp.60-66
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    • 2000
  • Coating immobilization is the process by which the wet coating applied to paper or paperboard reaches the final form. A coating immobilization point is defined as the solids content reached during drying where no further redistribution of coating materials occurs. Good control of coating immobilization is important in producing coated paper and paperboard with consistent high quality. This paper discusses the technical concepts of how coatings immobilize, and describes the importance of good immobilization control on coating holdout and coating structure. The use of soy protein polymers to modify the coating immobilization point is discussed. Soy proteins, because of their interaction with coating pigments, make a significant contribution to the immobilization characteristics of coastings. This technology gives the formulator options for changing the immobilization point to improve the performance of the coating. The importance of immobilization on casting uniformity, microporosity and sheet qualities is discussed, including binder migration, mottle, gluing, and print quality.

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An Overview of Techniques in Enzyme Immobilization

  • Nguyen, Hoang Hiep;Kim, Moonil
    • Applied Science and Convergence Technology
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    • v.26 no.6
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    • pp.157-163
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    • 2017
  • Immobilized enzymes have become the subject of considerable interest due to their excellent functional properties such as reusability, cost-effectiveness, and optimality during the past decades. Enzyme immobilization technology is not only used in industrial processes, but also a component technology of products for medical diagnostics, therapy, food industry, bio energy, and biomaterial detection. In this review, new methods for enzyme immobilization are introduced, and the advantages and disadvantages of a variety of techniques in enzyme immobilization will be also discussed.

Strategies in Protein Immobilization on a Gold Surface

  • Park, Jeho;Kim, Moonil
    • Applied Science and Convergence Technology
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    • v.24 no.1
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    • pp.1-8
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    • 2015
  • Protein immobilization on a gold surface plays an important role in the usefulness of biosensors that utilize gold-coated surfaces such as surface plasmon resonance (SPR), quartz crystal microbalance (QCM), etc. For developing high performance biosensors, it is necessarily required that immobilized proteins must remain biologically active. Loss of protein activity and maintenance of its stability on transducer surfaces is directly associated with the choice of immobilization methods, affecting protein-protein interactions. During the past decade, a variety of strategies have been extensively developed for the effective immobilization of proteins in terms of the orientation, density, and stability of immobilized proteins on analytical devices operating on different principles. In this review, recent advances and novel strategies in protein immobilization technologies developed for biosensors are briefly discussed, thereby providing an useful information for the selection of appropriate immobilization approach.

Immobilization of Lysozyme from Hen Egg by Crosslinking Method onto Chitosan Non-woven (키토산 섬유를 담체로 이용한 라이소자임 효소의 고정화)

  • Lee, So Hee
    • Textile Coloration and Finishing
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    • v.30 no.4
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    • pp.264-274
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    • 2018
  • Immobilization of lysozyme on chitosan non-woven using glutaraldehyde(GA) was investigated. For this, 100 % chitosan non-woven was prepared as novel support for the enzyme immobilization. In addition, free lysozyme activity was examined depending on various pH and temperature by measuring time. Moreover, the optimum immobilization conditions depending on various pH, temperature, immobilization time and lysozyme concentration was evaluated. In addition, thermal stability and storage stability of immobilized lysozyme were measured. The characteristics of immobilized lysozyme was examined by FT-IR, surface morphology, and MTT assay. The results are follows: the optimal immobilization of lysozyme were pH 7.0, $25^{\circ}C$, lysozyme concentration 1.5 mg/ml, immobilization time 240 min. The immobilized lysozyme showed higher thermal stability than the free trypsin. The immobilized lysozyme activity was retained 80 % of its initial activity at $4^{\circ}C$ over 30 days of storage. The lysozyme was immobilized effectively on chitosan non-woven by observation of surface morphology.

Effects of Kamikwibitang on Serum Levels of Corticosterone and Histamine and Immune Response after Immobilization Stress in Mice (가미귀비탕(加味歸脾湯)이 생쥐에 Immobilization Stress 부하후(負荷後) 혈중(血中) Corticosterone과 Histamine 함량(含量) 및 면역능(免疫能) 변화(變化)에 미치는 영향(影響))

  • Wi, Seok;Lee, Seung-Jun;Yoo, Sim-Keun
    • The Journal of Korean Obstetrics and Gynecology
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    • v.18 no.1
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    • pp.94-110
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    • 2005
  • The purpose of this research was to investigate the effects of Kamikwibitang water extract (KKT) on immobilization stress in C57BL/6J mice. KKT decreased the serum level of histamine and corticosterone increased by immobilization stress. In addition, KKT decreased the cell viability of thymocytes and enhanced the cell viability of splenocytes decreased by immobilization stress. Also, KKT decreased the viability of thymocytes and splenocytes in vitro. KKT decreased DNA fragmentation of splenocytes increased by immobilization stress. KKT decreased the population of thymic $CD4^+CD8^-$ cells increased by immobilization stress, and did not affect the population of $B220^+$ cells and the population of $Thy1^+$ cells changed by immobilization stress and enhanced the population of splenic $CD4^-CD8^+$ cells increased by immobilization stress. KKT enhanced the production of ${\gamma}-interferon$ and did not affect the production of interleukin-2 and interleukin-4 decreased by immobilization stress. Also, KKT decreased the phagocytic activity and the level of nitric oxide decreased by immobilization stress. These results indicate that KKT may be useful for the prevention and treatment of stress via suppression of serum histamine and corticosterone level and enhancement of specific-immune response.

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Optimized Conditions for In Situ Immobilization of Lipase in Aldehyde-silica Packed Columns

  • Seo Woo Yong;Lee Kisay
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.9 no.6
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    • pp.465-470
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    • 2004
  • Optimal conditions for the in situ immobilization of lipase in aldehyde-silica packed columns, via reductive amination, were investigated. A reactant mixture, containing lipase and sodium borohydride (NaCBH), was recirculated through an aldehyde-silica packed column, such that the covalent bonding of the lipase, via amination between the amine group of the enzyme and the aldehyde terminal of the silica, and the reduction of the resulting imine group by NaCBH, could occur inside the bed, in situ. Mobile phase conditions in the ranges of pH $7.0{\~}7.8$, temperatures between $22{\~}28^{circ}C$ and flow rates from $0.8{\~}1.5\;BV/min$ were found to be optimal for the in situ immobilization, which routinely resulted in an immobilization of more than 70 mg­lipase/g-silica. Also, the optimal ratio and concentration for feed reactants in the in situ immobilization: mass ratio [NaCBH]/[lipase] of 0.3, at NaCBH and lipase concentrations of 0.75 and 2.5 g/L, respectively, were found to display the best immobilization characteristics for concentrations of up to 80 mg-lipase/g-silica, which was more than a 2-fold increase in immobilization compared to that obtained by batch immobilization. For tributyrin hydrolysis, the in situ immobilized lipase displayed lower activity per unit mass of enzyme than the batch-immobilized or free lipase, while allowing more than a $45\%$ increase in lipase activity per unit mass of silica compared to batch immobilization, because the quantity of the immobilization on silica was aug­mented by the in situ immobilization methodology used in this study.

Effect of Samulanshintang on Rats stressed by Immobilization (구속(拘束)스트레스 흰쥐에 미치는 사물안신탕(四物安神湯)의 효능(效能)에 관(關)한 연구(硏究))

  • Kwon Bo-Hyung;Lee Sang-Ryong
    • Journal of Oriental Neuropsychiatry
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    • v.5 no.1
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    • pp.81-91
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    • 1994
  • This exoeriments were conducted to study anti-stress effects Samulanshintang on the weight change, ${\beta}-lipoprotein$, total cholesterol and triglyceride consentration of rats stressed by immobilization. The following results have been obtained : 1. Samulanshintang reduced significantly the body weight loss of rats stressed by immobilization. 2. Samulanshintang decreased significantly the serum cortisol level of rats stressed by immobilization. 3. Samulanshintang decreased significantly the serum ${\beta}-lipoprotein$ level of rats stressed by immobilization. 4. Samulanshintang decreased significantly the serum total cholesterol level of rats stressed by immobilization. 5. Samulanshintang decreased significantly the serum triglyceride level of rats stressed by immobilization. According to the above results, it is concluded that Samulanshintang has significant effect in reducing stress.

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Effects of Haeganjeon on Immobilization-Stress or Cold-Stress in Mice (해간전(解肝煎)이 생쥐의 Immobilization-Stress 및 Cold-Stress에 미치는 영향(影響))

  • Hwang, Tae-Won;Sim, Ho-Cherl;Kim, Song-Baeg;Yoo, Sim-Keun;Cho, Han-Back
    • The Journal of Korean Obstetrics and Gynecology
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    • v.18 no.3
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    • pp.51-66
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    • 2005
  • Purpose : Investigate the effects of Haeganjeon water extract (HGJ) on immobilization-stress or cold-stress in C57BL/6J mice. Methods : Male C57BL/6J 30 mice of weighting 18${\pm}$2g, were divided into sixs groups including the immobilization-stress group(5heads), after immobilization-stress HGJ oral administration(500mg/kg) groups(5heads), cold-stress group(5heads) and after cold-stress HGJ oral administration(500mg/kg) groups(5heads). then we observed changes in the serum histamine and corticosterone level and changes immune system. Results : HGJ decreased the serum level of histamine and corticosterone increased by immobilization-stress or cold-stress. HGJ inhibited the release of histamine from mast cells. In addition, HGJ enhanced the cell viability of thymocytes decreased by immobilization-stress or cold-stress and decreased DNA fragmentation of thymocytes increased by immobilization- stress or cold-stress. Also, HGJ increased the cell viability of splenocytes decreased by cold-stress and decreased DNA fragmentation of splenocytes increased by cold-stress. HGJ decreased the population of thymic CD4+ cells increased by immobolization-stress. HGJ increased the population of B220+ cells decreased by immobilization-stress and decreased the population of Thy1+ cells increased by immobilization-stress. Also, HGJ decreased the population of splenic CD4+ cells increased by immobolization-stress. HGJ enhanced the production of ${\gamma}-interferon$ decreased by immobilization-stress or cold-stress and increased the production of interleukin-4 decreased by immobilization-stress. Furthermore, HGJ enhanced the phagocytic activity decreased by immobilization-stress or cold-stress and enhanced the level of nitric oxide decreased by immobilization-stress or cold-stress. Conclusion : HGJ may be useful for the prevention and treatment of stress via suppression of serum histamine and corticosterone level and enhancement of immune response.

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A study of in situ immobilization of lipase by using an LC column with aldehyde-silica stationary phase

  • Seo, U-Yong;Hong, Seon-Hui;Lee, Gi-Se
    • 한국생물공학회:학술대회논문집
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    • pp.633-634
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    • 2001
  • The in situ immobilization of lipase in an LC column with aldehyde-silica stationary phase was optimized. The effects of feed composition, temperature, mobile phase pH and now rate on immobilization efficiency were investigated. Lipase activity after in situ immobilization was compared with free enzyme and batch immobilized enzyme.

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