• Title/Summary/Keyword: S-transferase

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Effect of Brief Treatment of Bromobenzene on the Liver $N /

  • 윤종국;채순님;신중규
    • Journal of Environmental Health Sciences
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    • v.24 no.3
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    • pp.18-21
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    • 1998
  • Bromobenzene 투여에 의한 간조직중 ATPase 활성을 관찰할 목적으로 흰쥐에 bromobenzene을 체중 kg당 400 mg을 복강으로 투여한 다음 4시간 후에 처치하여 다음과 같은 결과를 얻었다. Bromobenzene 투여로 인한 체중당 간무게는 유의하게 증가되었으나 간조직중 단백질 함량은 감소되었다. 혈청중 alanine aminotransferase 활성은 대조군과 별다른 차이를 볼수 없었다. 따라서 본 실험조건에서 Bromobenzene 처치 실험동물에서 간조직은 가역적상해로 생각되며 이러한 실험동물모델에 $Na^+/K^+$-ATPase 활성은 유의하게 (p<0.05)증가되었으며 이때 V$_{max}$ 치역시 대조군에 비하여 증가 되었다. 이때 간조직중 glutathione 함량은 감소되었으며 glutathione S-transferase 활성 및 cytochrome P-450 함량치는 증가되는 경향을 보였다.

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간손상에 대한 해독제 개발 및 안전성 평가 방법에 관한 연구

  • 유은영;김상건;정기화
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1994.04a
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    • pp.327-327
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    • 1994
  • 본 연구에서는 간손상에 대한 해독제의 연구 및 안전성 평가연구로서 H$_2$-rcccptor길항제와 한방에서 건위역으로 이용되는 생약추출물 (생강, 정향 및 후박나무의 수피추출물, 강활, 시호, 토복령 및 금은화)이 화합물로 유발된 간독성에 미치는 효과를 고찰하였다. 또한 식물의 2차 대사산물로서 식품, 의약품 및 화장품 향신료 등의 첨가제로 이용되는 monotcrpcnoids중 $\alpha$-pinene, limonenc, gcraniol 및 cincol 이 phase II 효소계중 glutathione S-transferase(GST)의 class alpha 및 mu family계 효소와 microsomal cpoxidc hydrolase(mEH)의 발현에 미치는 영향을 관찰하였다.

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THE ESSENTIAL ROLE OF PI3-KINASE IN THE INDUCTION OF GLUTATHIONE S-TRANSFERASE BY TERT-BUTYLHYDROQUINONE AND OLTIPRAZ: DIFFERENTIAL EFFECTS ON Nrf2/ARE ACTIVATION

  • Kim, Sang-Geon;Kang, Keon-Wook
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2001.05a
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    • pp.96-106
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    • 2001
  • The phase II detoxifying enzymes are inducible by a variety of compounds and play an essential role for the protection of cells. Many of chemoprotective agents trigger cellular signals for the phase II enzyme induction, which subsequently activate gene transcription through ARE activation.(omitted)

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Optimization of recombinant E. coli fermentation through biological manipulation and engineering control

  • Kim, Jeong-Yoon
    • The Microorganisms and Industry
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    • v.19 no.4
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    • pp.14-26
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    • 1993
  • Optimizing protein production in recombinant E. coli strains involves manipulation of genetic and environmental factors. In designing a production system, attention must be paid to gene expression efficiency, culture conditions and bioreactor configuration. Although not much emphasis was given to the physiology of host strains in this review, an understanding of the relationship between the physiology of host cell growth and the overproduction of a cloned gene protein is of primary importance to the improvement of the recombinant fermentation processes. Sometimes it is desirable to make use of gene fusion systems, e.g. protein A, polypeptide, gutathione-S-transferase, or pneumococcal murein hydrolase fusion, to facilitate protein purification.

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Effects of Ginseng on the Drug Metabolizing Enzymes (인삼이 간의 약물 대사 효소에 미치는 영향)

  • 김낙두
    • YAKHAK HOEJI
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    • v.28 no.1
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    • pp.29-33
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    • 1984
  • The paper aimed to review the influences of ginseng on the metabolism of foreign substances and on the activity of hepatic drug metabolizing enzyme system in mouse or rat liver. It has been known that ginseng components reduces the motality rates and the toxic effects induced by foreign materials. Chronic pretreatment of mouse or rat with ginseng extract fractions or saponin caused the increase in the metabolism of foreign materials and the activity of drug metabolizing enzymes, such as cytochrome $P_{450}$, NADPH cytochrome C reductase and glucuronyl S-transferase in liver. Thus, it may be concluded that decrease in toxic effect of foreign substances by ginseng pretreatment may be partly related to the induction of drug metabolizing enzymes in liver.

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