• Childhood Kidney Diseases
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• 제13권2호
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• pp.170-175
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• 2009

목적 : 국소성 분절성 사구체 경화증 환아들은 어떤 종류의 약물치료에도 잘 반응하지 않고 점차 말기 신부전으로 진행되는 경우가 많다. 본 연구는 미세 변화형 신증후군과 국소성 분절성 사구체 경화증 사이의 단백질 발현의 차이를 알아보고자 시행하였다. 방법 : 미세 변화형 신증후군과 국소성 분절성 사구체 경화증의 신장 조직 샘플로부터 단백질을 추출하였다. 추출한 단백질들에 대해 2차원 전기영동 시스템을 이용하여 개개의 단백체로 분리한 후 실버 염색을 하였다. 분리한 단백질은 MASCOT Peptide Mass Fingerprint 프로그램을 이용하여 동정하였다. 결과 : 미세변화형 신증후군과 국소성 분절성 사구체 경화증의 신장 조직에서 서로 상반된 발현 양상을 보여주었다. 이중 가장 크고 두드러지게 발현되는 부위를 잘라내어 단백질 분석을 시행한 결과 국소성 분절성 사구체 경화증에서만 glutathione S-transferase P1-1 단백질이 발현 되었다. 결론 : 상기 결과는 비록 국소성 분절성 사구체 경화증의 병태생리를 알기 위한 기초연구였으나 본 연구에서 밝혀진 glutathione S-transferase P1-1 은 향후 질병의 기전을 밝히는데 있어서 중요한 소견으로서 향후 지속적인 연구가 필요할 것으로 사료된다.

• 대한의생명과학회지
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• 제6권1호
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• pp.19-28
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• 2000

농도와 기간에 따른 바이러스 감염 및 항바이러스제인 amantadine병행 첨가 시 Maddin Darby canine kidney (MDCK) 세포 내의 free radical 해독계 효소인 glutathione S-transferase (GST)와 lactate dehydrogenase (LDH)의 활성 변동을 상호비교 관찰하였다. 바이러스에 감염된 MDCK세포는 감염 3일 후 1 TCID$_{50}$ 군은 80%이상, 10 TCID$_{50}$ 군은 거의 대부분의 단층세포가 탈락되는 병변 효과가 나타났다. Amantadine cytotoxic dose %가 증가함에 따라 MDCK 세포 내의 GST 및 LDH 활성은 농도에 따라 유의하게 감소되었고, 감염배지 내 LDH 활성은 대조군 보다 유의한 증가를 보였다. 인플루엔자 바이러스 type A 접종농도와 기간에 따른 MDCK세포 내의 GST및 LDH활성은 1 및 10 TCID$_{50}$ 감염군에서 감염 3일 후부터 유의하게 감소되었고, 감염배지 내의 LDH활성은 10배 이상 증가되었다. 인플루엔자 바이러스 type A 100 TCID$_{50}$ 감염과 amantadine병행 첨가 시 GST 및 LDH 활성은 바이러스만 감염한 군 보다 MDCK세포 내에서 대조군에 비하여 감소율이 낮았고, 감염배지 중 LDH 활성 역시 증가율이 낮았다. 또한 바이러스 감염 후 amantadine 90 $\mu\textrm{g}$/ml 첨가 시에 세포 내와 감염배지 중에서 가장 낮은 감소와 증가를 나타냈다.

• 환경생물
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• 제32권3호
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• pp.234-242
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• 2014

본 연구는 시험생물로서 말똥성게 (Hemicentrotus pulcherrimus)를 이용하여 내분비계장애물질인 bisphenol A(BPA)의 독성 및 시험생물로서의 적합성 등을 조사하였다. 말똥성게(H. pulcherrimus)의 수정 및 정상 배아발생에 미치는 BPA의 독성을 보기 위하여 농도(0, 300, 500, 800, 1000, 1500 ppb)에서 조사하였다. BPA 노출 시 수정률은 시험구간 내의 BPA 처리농도와 관계없이 유의적인 변화가 없었다. 정상 배아발생률은 BPA 농도가 높을수록 유의적인 감소를 나타냈으며, 800 ppb 농도부터 유의적인 감소를 보였다. 정상배아발생에 대한 독성값은 반수영향농도 ($EC_{50}$) 1056.1 ppb, 95% Cl 981.8~1163.9 ppb로 나타났다. 또한 무영향농도 (NOEC)와 최소영향농도(LOEC)는 500 ppb 및 800 ppb로 나타났다. BPA에 노출된 배아는 농도가 증가함에 따라 발생이 정체되는 현상이 나타났다. BPA에 노출된 pluteus 유생을 이용한 glutathione-S-transferase (GST) 유전자의 발현을 비교해본 결과 GST 유전자의 발현은 농도가 증가함에 따라 발현이 증가하였다. 본 연구 결과, 말똥성게 (H. pulcherrimus)의 초기 배아 발생 과정 중 800 ppb 이상에서 독성을 나타냈으며 GST 유전자는 BPA 노출에 따른 위해성 평가에 생체지표유전자로 유용하게 이용될 수 있다고 생각된다.

• Journal of Acupuncture Research
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• 제17권1호
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• pp.129-142
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• 2000

Gamdutang aqua-acupuncture solution(GAS), Gamdutang water-extracted solution(GWS) and Degamdutang aqua-acupuncture solution(DGAS) were prepared and tested for potential antitumor activities. It was used three biomarkers (quinone reductase, omithine decarboxylase, glutathione) to test chemopreventive potentials of GAS, GWS, DGAS. GAS was potent inducer of quinone reductase activity in Hepalclc7 murine hepatoma cells in culture, whereas GWS is less potent. GAS, GWS and DGAS were significantly induced quinone reductase activity in cultured rat normal liver cell, Ac2F. Glutathione levels were increased about 1.8-fold with GAS, 1.0-1.1 fold with GWS, DGAS in cultured murine hepatoma hepaiclc7 cells. In addition glutathione s-transferase levels were increased with GAS, GWS and DGAS. The effects of GAS, GWS and DGAS were tested on the growth of Acanthamoeba castellanii. Proliferation of Acanthamoeba castellanii was inhibited by GAS, GWS and DGAS at concentradons of $1{\times}$ and $5{\times}$. These results suggest that GAS has chemopreventive potential by inducing quinone reductase and quinone reductase activities, inhibition of ornithine decarboxylase activity, and increasing glutathione levels.

• 한국식품영양과학회지
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• 제28권6호
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• pp.1364-1368
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• 1999

This study was carried out to investigate the inhibiton effects of Coprinus comatus ethanol extract of edible mushroom on liver damage in benzo(a)pyrene (B(a)P) treated mice. The activities of serum aminotransferase, cytochrome P 450 and hepatic content of lipid peroxide after B(a)P treatment were increased than those of control, but those levels were significantly decreased by the treatment of Coprinus comatus ethanol extract. Whereas, the hepatic glutathione content and glutathione S transferase activity were decreased by B(a)P treatment than those of control, but those were increased by the treatment of Coprinus comatus ethanol extract. Also the activities of superoxide dismutase, catalase and glutathione peroxidase after B(a)P treatment were markedly increased than those of control, but those levels were decreased by the treatment of Coprinus comatus ethanol extract. These results suggest that Coprinus comatus ethanol extract have a protective effect on liver damage by benzo(a)pyrene through the mechanisms of decreasing lipid peroxide and activities of free radical generating enzymes.

• 약학회지
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• 제36권5호
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• pp.460-468
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• 1992

Several bichemical parameters related to free radicals were estimated in senile-prone (P) and resistant(R) strains of male senescence-accelerated mice(SAM) at 2, 5 and 11 months of age. The superoxide generation was increased with age in SAM-R/1 and SAM-P/2. Compared to SAM-R/1, more generation of superoxide was significantly noted in the SAM-P/2 liver. The activities of Cu/Zn-superoxide dismutase and catalase were decreased during aging and these activities in SAM-P/2 were significantly lower than in SAM-R/l liver. The activities of glutathione S-transferase were varied with aging, whereas SAM-P/2 showed lower levels compared to SAM-R/l. The gradual decreases of glutathione, protein bound-SH and nonprotein bound-SH contents were noted with increasing age. SAM-P/2 liver contained lesser amounts of glutathione and nonprotein bound-SH compared to SAM-R. In conclusion, superoxide generation was increased whereas the antioxidant enzyme activities were decreased during aging in SAM-R/1. In addition, SAM-P/2 strain showed more superoxide generation and less antioxidant enzyme activities than SAM-R/1 in the liver, thus we assume that these factors might accelerate the senescence of SAM-P/2 strain.

• 대한약리학회지
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• 제32권2호
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• pp.233-241
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• 1996

Previous studies have shown that glucocorticoid suppresses microsomal epoxide hydrolase(EH) gene expression and that EH expression is altered during pregnancy. The effects of progesterone on the expression of rat EH and certain glutathione S-transferase(GST) genes were examined in this study. Northern RNA blot analysis revealed that progesterone was effective in increasing hepatic EH mRNA levels at 12 h to 48 h after treatment with a maximal 9-fold increase being noted at 12 h time point. Nonetheless, multiple daily treatment with progesterone rather caused minimal relative increases in EH mRNA levels. GST Ya and Yb1/2 mRNA levels were also transiently elevated at 12 h after progesterone treatment, followed by gradual decreases from the maximal Increases at day 1, 2 and 5 post-treatment. These changes in EH and GST mRNA levels were noted only at a relatively high dose of progesterone. Furthermore, immunoblot analyses showed that rats treated with progesterone for 5 days failed to show EH or GST induction, indicating that progesterone-induced alterations in EH and GST mRNA levels do not reflect bona fide induction of the detoxifying enzymes. Concomitant progesterone treatment of rats with the known EH inducers including ketoconazole and clotrimazole failed to additively nor antagonistically alter EH mRNA levels. In contrast, dexamethasone substantially reduced ketoconazole- or clotrimazole-inducible EH expression. These results showed that progesterone stimulates the EH, GST Ya and Yb1/2 gene expression at early times followed by marked reduction in the RNA levels from the maximum after multiple treatment and that the changes in mRNA do not necessarily reflect induction of the proteins.

• Preventive Nutrition and Food Science
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• 제5권1호
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• pp.48-53
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• 2000

Inhibitory effects of the methanol extract, hexane extract, methanol soluble fraction (MSF) and juice from 3 weeks fermented Kimchi on the tumor formation in sarcoma-180 cell transplanted mice were studied. Effects of the solvent extracts and juice of the Kimchi on the levels of lipid peroxide, glutathione, and the enzyme activities of the liver were also investigated in normal and sarcoma-180 cell transplanted mice. At 32 days following trans-plantation, MSF reduced the tumor formation by 54% compared with the control group, resulting in the smallest tumor weight. Lipid peroxided content in liver increased by the transplantation of sarcoma-180 cells. However, it decreased when MSF of Kimchi was treated to the mice. MSF also suppressed xanthine oxidase activity in cytosol of the liver cells in mice transplanted by sarcoma-180 cells. Kimchi extracts had no inhibitory effect on hepatic aminopyrine-N-demethylase activity in sarcoma-180 cell transplanted or normal mice. Methanol extract and hexane extract of Kimchi slightly increased hepatic glutathione contents in sarcoma-180 treated mice. The injection of MSF from Kimchi markedly increased glutathione levels in the liver of sarcoma-180 treated mice. The injection of MSF from Kimchi markedly increased glutathione levels in the liver of sarcoma-180 treated mice compared to the controls. The MSF recovered the activities of hepatic glutathione reductase and glutathione S-transferase that decreased by the injection of sarcoma-180 cells. These results showed that MSF of Kimchi could suppress the growth of tumors, inhibiting lipid peroxide production and xanthine oxidase activity, in mice. We also suggested that Kimchi extract might play an important role in the prevention of cancer by enhancement of the glutathione level itself as well as via glutathione reductase and glutathione S-transferase.

• Journal of Microbiology and Biotechnology
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• 제14권1호
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• pp.158-161
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• 2004

Scenedesmus spp. were cultured for 51 days in newly developed medium, KEP I (Kim and Ecopeace: initials of corresponding author and environmental company) made with Bacterio-Mineral-Water (3%, v/v) that had been bio-reacted with swine urine medium to 10% (v/v) Bold's Basal medium, and investigated for cancer chemopreventive potential by measuring the induction of quinone reductase (QR), glutathione S-transferase (GST), and reduced glutathione (GSH), and inhibition of cytochrome P450 (CYP) 1A1 activity. The activitives of QR and GST of Scenedesmus spp. cultured in KEP I medium were increased by 3.0-fold and 1.5-fold, respectively. However, Scenedesmus spp. cultured in control medium (CT) increased the activitives of QR and GST by 1.8-fold and 1.3-fold, respectively. Scenedesmus spp. in KEP I medium strongly inhibited CYP 1Al activity. These results show that Scenedesmus spp. in KEP I medium has cancer chemopreventive potential and may be a candidate for further development as a chemopreventive agent.

• Journal of Nutrition and Health
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• 제23권6호
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• pp.418-426
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• 1990

발암물질인 2-acetylaminofluorence(2-AAF)과 Choline 결핍이 서로 다른 지방을 섭취한 쥐간의 지질과산물, Glucose 6-phosphatase (G6Pase)와 Glutathione S-transferase(GST) 활성도에 미치는 영향을 연구 하였다. 식이 지방은 쇠기름과 옥수수유를 사용하였으며 각 식이 지방군을 Choline 결핍군과 대조군으로 나누어 실험하였다. 식이섭취 3주와 5주째, 2-AAF 처리군과 비처리군으로 나누어 처리군에 매주 2회씩 총4회 2-AAF를 주사 한 뒤 식이섭취 10주 루 동물을 희생 시켰다. MIcrosome의 지질과산화물 함량은 2-AAF와 Choline결핍(CD)식이에 의해 옥수수유 군에서 증가하여 지질과산화 반응에 있어 2-AAF와 CD식이의 역활이 쇠기름을 섭취하였을때 보다 옥수수유를 섭취한 경우 더 중요함을 알 수 있었다. Microsome의 G6Pase활성은 유의적이지는 않으나 2-AAF와 CD식이에 의해 감소하는 경향을 보였으며 옥수수유의 섭취에 의해서는 유의적으로 감소하였다. GST활성은 식이지방에 따라 2-AAF나 CD식이에 의해 증가하였으며 이때 증가된 GST는 발암물질의 대사와 지질과산화물 형성에 대해 방어 작용을 한것으로 보인다.