• 생명과학회지
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• 제13권5호
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• pp.658-667
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• 2003

환경 스트레스에 대해 내성을 가지는 것으로 알려진 명아주과에 속하는 근대(지상부길이 15 cm)를 이용하여, 다양한 염 농도에서의 건물함량 측정을 통한 생장반응과 항산화 효소(SOD, APX, GR)의 효과를 밝히기 위하여 다양한 농도(0, 50, 200, 1000 mM NaCl)의 염을 처리한 후 24시간 동안의 효소의 활성변화를 측정하였다. 근대는 처리 2시간째 200 mM NaCl처리구 에서 SOD, APX, GR의 최대활성을 보였으며, 50 mM NaCl처리구에서 가장 낮은 활성을 나타내었다. PAGE에 의한 isoforms의 확인결과, 근대는 3개의 SOD isoforms(Fe-SOD, CuZn-SOD, Mn-SOD)를 함유하고 있었으며, major isoform은 CuZn-SOD로 밝혀졌다. APX의 경우, 9개의 bands 중 특별히 저분자 isoforms (No. 7,8)의 강한 발현양상을 보였다. SOD의 경우 50 mM NaCl처리에서 Mn-SOD isoform의 불활성을 보여 활성의 증감에 있어 Mn-SOD가 직접적인 연관성을 가질 것으로 생각된다. 근대의 항산화 효소는 염 처리후 단시간내 효소 활성의 증가양상(특별히 처리후 2시간째 200 mM NaCl처리구)을 보여, 고농도 염 환경하에서 항산화시스템의 빠른 작동을 통해 염스트레스에 의해 생성된 활성산소를 제거함으로써 염에 의한 산화적 스트레스에 대해 효과적으로 대처해 나가는 것으로 생각된다. 검색어-근대, 염, 활성산소, SOD, APX, GR.

• 대한한의학회지
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• 제17권2호
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• pp.133-144
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• 1996

This study investigated the effect of InJinORyungSan on the nephrotoxicity in rat treated with cyclosporin A. Control group were injected with cyclosporin A alone. whereas test group were injected with cyclosporin A and InJinORyungSan extract. In the control group, blood urea nitrogen(BUN), serum creatinine(S-Cr) and renal lipid peroxidation(LPO) level were significantly increased, but renal superoxide dismutase(SOD) activity was significantly decreased. In the kidney of control group, the destruction of distal convoluted tubules(DCT) and proximal convoluted tubules(PCT) were observed in renal cortex, lymphocytes and fibroblast were appeared in the portion of DCT destruction. However, in the test group, BUN, S-Cr and renal LPO level were significantly decreased as compared with control group, on the other hand, renal SOD activity was significantly increased. In the kidney of test group, the destruction of DCT and PCT were repaired as compared with control group. These results demonstrated that InJinORyungSan. can be attributed to recovery from nephrotoxicity, We consider that activated SOD by InJinORyungSan suppress renal LPO or production of free radicals induced by cyclosporin A.

• 생명과학회지
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• 제20권10호
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• pp.1476-1482
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• 2010

본 연구는 생후 6주령의 Sprague Dawley계 수컷 흰쥐 25마리를 대상으로 하여 5그룹(통제군, 수영군 4그룹)으로 분류하여 4주간의 1% 콜레스테롤 식이로 고지혈증을 유도한 후, 6주간의 수영을 운동강도(무부하, 저부하, 중부하, 고부하)에 따라 실시하였으며, 지질과산화 생성반응과 간조직의 항산화효소 활성도에 미치는 영향을 분석한 결과, MDA 생성 반응에서는 통제군에 비해 수영그룹 모두가 유의하게(p<0.001) 낮게 나타났고, 수영그룹 간의 비교에서는 중부하수영군이 나머지 3그룹에 비해 유의하게(p<0.001) 낮게 나타났다. 또한, SOD 활성도에서는 통제군에 비해 수영그룹 모두가 유의하게(p<0.01) 높게 나타났으며, 수영그룹간 비교에서는 저부하수영군에 비해 무부하, 중부하, 고부하수영군이 유의하게(p<0.01) 높게 나타났다. 이상의 결과로 보아, 규칙적인 수영은 운동강도에 따라 고지혈증 상태에서의 산화적 스트레스에 의한 MDA 생성 반응을 선택적으로 억제시키고, SOD 효소 활성을 증가시켜 대표적인 항산화시스템을 효과적으로 개선시키는데 도움을 줄 것으로 생각된다.

• Journal of Ginseng Research
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• 제36권4호
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• pp.411-417
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• 2012

Ginseng seeds were treated with different autoclaving temperatures and autoclaving times, and extracted with 80% methanol to measure changes in antioxidant activity. The antioxidant activity of ginseng seeds treated by autoclaving was measured by 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity, 2,2'-aziono-bis(3-ethylbenzthiazoline)-6-sulfonic acid radical scavenging activity, superoxide dismutase SOD-like activity, ferric reducing antioxidant power (FRAP), and total phenolic compound content. As autoclaving temperature and time were increased, the L lightness value decreased and the redness value tended to increase. Total phenolic compound content was about three times higher in ginseng seeds treated with autoclaving at 130°C than in ginseng seeds that were not treated. DPPH radical scavenging activity and ABTS radical scavenging activity increased as autoclaving temperature and time were increased. In particular, when the concentration was 100 ppm, the ABTS radical scavenging activity was 91.80% in ginseng seeds treated by autoclaving at $130^{\circ}C$, which was the highest antioxidant activity. FRAP and SOD-like antioxidant activity tended to increase significantly as autoclaving temperature and time were increased.

• 동의생리병리학회지
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• 제21권6호
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• pp.1520-1524
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• 2007

The purpose of this study was to investigate the effects of Houttuynia cordata Thunb and Oriental Herb Mixture Extract (HCTM) through anti-oxidation against the hepatotoxicity-inducing lipopolysaccharide (LPS) in HCTM and LPS-treated rats. HCTM of 100 mg/kg concentration was intraperitoneally administered into rats at dose of 1.5 ml/kg for 20 days. On the day 21, 1.5 ml/kg of LPS was injected 5 hours before anesthetization. The activity of superoxide dismutase (SOD) was measured in mitochondrial fraction and malondialdehyde (MDA), catalase (CAT), glutathione peroxidase (GPx) were measured in liver homogenate. LPS-treatment markedly increased the levels of MDA and significantly decreased those of SOD, CAT and GPx. But HCTM pretreatment significantly increased those of SOD, CAT and GPx by 86.9%, 57.2% and 72.7% respectively. Moreover HCTM pretreatment decreased the levels of MDA. These results showed the HCTM had the effects against the hepatotoxicity-inducing LPS in the anti-oxidation. This suggested that HCTM could be used for functional beverage.

• 한국산림과학회지
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• 제88권2호
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• pp.221-228
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• 1999

사방오리나무(Alnus firma)가 공해에 대해서 내성을 가지는 이유를 구명하기 위해서 광합성 등 생리적인 특성과 몇 가지 antioxidant 관여 효소를 분석하였다. 이를 위해서 공단이 많은 오염지역(여천산업단지)에서도 잘 자라는 사방오리나무 개체목과 피해를 받은 개체목을 각각 선발하였다. 그리고 비교를 위해서 오염원이 거의 없는 청정지역(수원)에서도 비슷한 생장을 하고 있는 개체목을 각각 1997년도에 선발하였다. 광합성능력, 기공전도도, 증산량, 엽록소함량, Rubisco, Antioxidant 효소(Superoxide dismutase(SOD) 그리고 Glutathione reductase(GR))의 활성 모두, 오염지역에서 잘 자라며 가시적인 피해를 보이지 않는 개체목의 경우 가시적인 피해가 있는 개체의 경우보다 높은 것으로 조사되었다. 이는 오염물질로부터 자신을 보호하여 정상적인 생장을 유지하기 위한 생물학적인 보상(Biological compensation)을 하는 것이라고 추정된다.

• Toxicological Research
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• 제35권3호
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• pp.249-255
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• 2019

Cadmium is a strong toxic heavy metal which presents in paints and liquid wastes and causes oxidative stress in fish. On the other hand, lead is widely used for different purposes, e.g. lead pipes, it targets vital organs such as liver and kidney causing biochemical alterations. The present study evaluates the effects of 60 days exposure to Cd and Pb either single or combined together in African catfish. Sixty-four fishes were divided into 3 groups and exposed to $CdCl_2$ (7.02 mg/L) or $PbCl_2$ (69.3 mg/L) or a combination of them along with control group. Activities of acid phosphatase (ACP), lactate dehydrogenase (LDH) and glucose-6-phosphate dehydrogenase (G-6-PDH) were estimated. Moreover, gill, liver and kidney were assayed for activities of superoxide dismutase (SOD), catalase (CAT) and levels of glutathione (GSH) and malondialdehyde (MDA). Individual exposure showed that both Cd and Pb significantly decreased LDH activity and SOD activity in the kidney. Pb significantly increased G-6-PDH activity and decreased GSH level in the gill. CAT activity in liver and kidney elevated significantly on Cd exposure while lead caused a significant depletion in the liver and significant elevation in the kidney. Both Cd and Pb significantly increased MDA levels in liver and kidney while Pb increased its level in gills. The combined exposure resulted in normalization of LDH, G-6-PDH activity, and CAT activity in liver and kidney as well as GSH level in both tissues and MDA in gill and kidney. The combination increased SOD activity and MDA level in liver and decreased SOD activity in kidney and GSH level in gills. In conclusion, the antioxidant system of African catfish was adversely affected by prolonged exposure to Cd and Pb. The combined exposure caused less damage than individual exposure and returned most parameters to those of controls.

• Journal of Microbiology and Biotechnology
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• 제26권11호
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• pp.1881-1890
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• 2016

Manganese superoxide dismutase (MnSOD) is a vital enzyme that protects cells from free radicals through eliminating superoxide radicals ($O^{2-}$). Hirudin, a kind of small active peptide molecule, is one of the strongest anticoagulants that can effectively cure thrombus diseases. In this study, we fused Hirudin to the C terminus of human MnSOD with the GGGGS linker to generate a novel dual-feature fusion protein, denoted as hMnSOD-Hirudin. The hMnSOD-Hirudin gene fragment was cloned into the pET15b (SmaI, CIAP) vector, forming a recombinant pET15b-hMnSOD-Hirudin plasmid, and then was transferred into Escherichia coli strain Rosetta-gami for expression. SDS-PAGE was used to detect the fusion protein, which was expected to be about 30 kDa upon IPTG induction. Furthermore, the hMnSOD-Hirudin protein was heavily detected as a soluble form in the supernatant. The purification rate observed after Ni NTA affinity chromatography was above 95%. The hMnSOD-Hirudin protein yield reached 67.25 mg per liter of bacterial culture. The identity of the purified protein was confirmed by western blotting. The hMnSOD-Hirudin protein activity assay evinced that the antioxidation activity of the hMnSOD-Hirudin protein obtained was $2,444.0{\pm}96.0U/mg$, and the anticoagulant activity of the hMnSOD-Hirudin protein was $599.0{\pm}35.0ATU/mg$. In addition, in vitro bioactivity assay showed that the hMnSOD-Hirudin protein had no or little cytotoxicity in H9c2, HK-2, and H9 (human $CD_4{^+}$, T cell) cell lines. Transwell migration assay and invasion assay showed that the hMnSOD-Hirudin protein could suppress human lung cancer 95-D cell metastasis and invasion in vitro.

• BMB Reports
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• 제34권1호
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• pp.66-72
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• 2001

To investigate the mechanism of adriamycin (ADM) resistance in the ADM resistant subline PC-14/ADM, we examined the expressions of p-glycoprotein (P-gp), topoisomerase I (Topo I) and II (Topo II), glutathione-S-transferases (GSTs), tissue transglutaminase (t-TG), epidermal growth factor receptor (EGFR), and E-cadherin and the activity of superoxide dismutase (SOD) in PC-14 and PC-14/ADM cells. There was no change in the cellular levels of P-gp, Topo I, Topo II, and the two isoforms of GSTs. However, SOD activity in PC-14/ADM cells was 2.38 fold higher than that in PC-14 cells. A marked induction of the t-TG expression was also observed in PC-14/ADM cells. In addition to those changes, expressions of EGFR and E-cadherin were down regulated in PC-14/ADM cells. Therefore, molecular modifications such as an increase in SOD activity, induction of the t-TG expression, and down regulation of EGFR and E-cadherin expressions may play important roles in PC-14/ADM cells during the development of ADM resistance.

• 방사선산업학회지
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• 제4권3호
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• pp.203-207
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• 2010

Radiation-induced late injury to normal tissue is a primary area of radiation biology research. The present study was undertaken to investigate whether the late effect of the ionizing radiation appears as an age-related oxidative status in the brain. Three groups of 4-month old C57BL/6 mice that were exposed to $^{137}Cs$ ${\gamma}-rays$ at a single dose (5 Gy) or fractionated doses ($1Gy{\times}5times$, or $0.2Gy{\times}25times$) at 2 months old were investigated for the oxidative status of their brains with both young (2-month) and old (24-month) mice. A significant (p<0.05) decrease in superoxide dismutase (SOD) activity was observed in old mice brains compared with that of the young mice. malondialdehyde (MDA) content was significantly (p<0.05) increased in the old mice brain. However, any significant difference in SOD activity and MDA contents of the irradiated brain was not observed compared to age-matched control group mice. SOD activity and MDA content were observed within good parameters of brain aging and there were no late effects on the age-related oxidative level in the ${\gamma}-ray$ irradiated mice brains.