• 식물조직배양학회지
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• 제26권1호
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• pp.53-58
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• 1999

Superoxide dismutase (SOD) 고생산세포주로 선발된 카사바 (Manihot esculenta Crantz) 배양세포에 감마선을 처리하여 세포생장과 SOD, peroxidase (POD), catalase (CAT)의 항산화효소 활성을 조사하였다. 카사바 캘러스는 계대배양 후 약 15일에 대수증식생장기에 진입한 후 30일에 최대생장을 나타내었으며 계속적인 배양에 따라 생장이 현저히 감소하였다. SOD와 POD의 비활성도 (units/mg protein)는 계대배양 직후에 가장 높았으며 대수증식 초기까지 감소한 후 다시 배양후기까지 증가하였다. CAT 활성은 세포생장과 비례하여 활성변화를 나타내었으며 계대배양 직후와 배양후기에 낮은 활성을 나타내었다. 계대배양 7일째의 카사바 캘러스에 감마선을 처리한 한 결과, 처리 후 14일째 배양세포는 방사선량에 비례하여 세포생장에 크게 영향을 주어 50Gy와 70Gy에서 각각 약 50%와 80%의 생장이 억제되었다. 이 시기의 SOD와 POD는 방사선량에 비례하여 증가하여 70Gy를 조사한 경우 각각 4배, 2.5배 증가하였으나 CAT은 방사선에 거의 영향을 받지 않았다. 카사바 캘러스배양에서 계대배양, 배양후기의 세포노화 및 배지내 영양고갈에 따른 배양스트레스는 SOD와 POD에 의해 주로 조절되고 있음이 시사되었다.

• Journal of Ginseng Research
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• 제40권2호
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• pp.185-195
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• 2016

Background: To investigate the effect of pectinase-treated Panax ginseng (GINST) in cellular and male subfertility animal models. Methods: Hydrogen peroxide ($H_2O_2$)-induced mouse spermatocyte GC-2spd cells were used as an in vitro model. Cell viability was measured using MTT assay. For the in vivo study, GINST (200 mg/kg) mixed with a regular pellet diet was administered orally for 4 mo, and the changes in the mRNA and protein expression level of antioxidative and spermatogenic genes in young and aged control rats were compared using real-time reverse transcription polymerase chain reaction and western blotting. Results: GINST treatment ($50{\mu}g/mL$, $100{\mu}g/mL$, and $200{\mu}g/mL$) significantly (p < 0.05) inhibited the $H_2O_2$-induced ($200{\mu}M$) cytotoxicity in GC-2spd cells. Furthermore, GINST ($50{\mu}g/mL$ and $100{\mu}g/mL$) significantly (p < 0.05) ameliorated the $H_2O_2$-induced decrease in the expression level of antioxidant enzymes (peroxiredoxin 3 and 4, glutathione S-transferase m5, and glutathione peroxidase 4), spermatogenesis-related protein such as inhibin-${\alpha}$, and specific sex hormone receptors (androgen receptor, luteinizing hormone receptor, and follicle-stimulating hormone receptor) in GC-2spd cells. Similarly, the altered expression level of the above mentioned genes and of spermatogenesis-related nectin-2 and cAMP response element-binding protein in aged rat testes was ameliorated with GINST (200 mg/kg) treatment. Taken together, GINST attenuated $H_2O_2$-induced oxidative stress in GC-2 cells and modulated the expression of antioxidant-related genes and of spermatogenic-related proteins and sex hormone receptors in aged rats. Conclusion: GINST may be a potential natural agent for the protection against or treatment of oxidative stress-induced male subfertility and aging-induced male subfertility.

• 한국수산과학회지
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• 제23권2호
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• pp.109-124
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• 1990

A rapid processing method for fish sauce of high quality stability and favorable flavor was investigated using mackerel waste as starting material. The chopped waste was homogenized with water and hydrolyzed by commercial proteolytic enzymes such as Complex enzyme-2000($2.18\cdot10^4$ U/g solid, Pacific Chem. Co.) and Alcalase ($1.94\cdot10^4$ U/g solid, Novo) in a cylindrical vessel with 4 baffles and 6-bladed turbine impeller. Optimal pH and temperature for the hydrolysis with Complex enzyme-2000 were 8.0 and $50^{\circ}C$, and those with Alcalase were 9.0 and $55^{\circ}C$. In both cases, the reasonabe amount of added water and enzyme concentration based on the waste weight were $40\%,\;3\%$ and hydrolyzing time was 100 min. Thermal treatment of the hydrolysate with $6\%$ of invert sugar for 2 hours at $90^{\circ}C$ was adequated to inactivation of the enzymes and pasteurization of the hydrolysate. Flavor, taste and color of the hydrolysate were improved during the thermal treatment in which the browning reaction products might participate and result in antioxidative and bactericidal effects. Combined use of $0.005\%$ of Caryophylli flos with $6\%$ of invert sugar was also effective for the improvement of taste. Yield of the fish sauce based on the total nitrogen of the raw waste was $93.7\~94.9\%$, and $87.6\~87.9\%$ of the total nitrogen in the fish sauce was in the from of amino nitrogen. The pH, salinity and histamine content of the fish sauce prepared with $15\%$ of table salt were $6.1\~6.2$, $14.0\~14.5\%$ and less than $10mg\%$, respectively. The fish sauce was stable on bacterial growth during the storage of 60 days at $26\pm3^{\circ}C$ and the quality was also maintained.

• 한국수산과학회지
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• 제23권2호
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• pp.125-136
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• 1990

To develope a rapid processing method for fish sauce, processing conditions of fish sauce from sardine waste was investigated. The chopped waste was homogenized and hydrolyzed by commercial proteolytic enzymes such as Complex enzyme-2000($2.18\cdot10^4$ U/g solid) and Alcalase($1.94\cdot10^4$ U/g solid) in a cylindrical vessel with 4 baffles and 6-bladed turbine impeller. Optimal temperature for the case of hydrolysis with Complex enzyme-2000 was 50 and that with Alcalase was $55^{\circ}C$. In both cases, the reasonable pH, amount of water for homo-genization, enzyme concentration and hydrolyzing time were 8.0, $40\%$ (W/W), $3\%$ and 100 min, respectively. Heating of the filtrated hydrolysate for 2 hours at $90^{\circ}C$ with $6\%$ of invert sugar was suitable for pasteurization of the hydrolysate and inactivation of enzymes. Flavor, taste and color of the hydrolysate was improved during the thermal treatment in which the browning reaction products might participate and result in antioxidative and bactericidal effects. Combined use of $0.005\%$ of Caryophylli flos with invert sugar was also effective for the improvement of taste. Yield of the fish sauce based on the total nitrogen in the raw sardine waste was $91.2\~92.3\%$ and $87.2\~87.8\%$ of the total nitrogen in the fish sauce was in the form of amino nitrogen. The pH, salinity and histamine content of the fish sauce prepared with $15\%$ of table salt were $6.1\~6.2$, $14.2\~14.4\%$ and less than $10mg\%$, respectively. The fish sauce was stable during the storage of 60 days at $26\pm3^{\circ}C$ on bacterial growth and its quality was also maintained.

• Journal of Nutrition and Health
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• 제35권4호
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• pp.431-438
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• 2002

본 연구에서는 녹차 건분 식이나 항산화 비타민 보충식이가 뇌 조직의 항산화능 증진효과를 가지고 있는지를 보고자, 생후 9개월령과 12개월령 Sprague-Dawley종 실험동물에게 3% 녹차 건분식이와 항산화 비타민 보충식이를 3주간 공급하였다 희생 후 뇌 조직을 대뇌, 소뇌, 선조체, 해마로 나누어 malondialdehyde (MDA)의 함량과 catalase, superoxide dismutase (SOD) , glutathione peroxidase (GSH-Px)의 활성을 측정하였다. 본 실험 결과를 종합하여 볼 때, 3% 녹차 건분 식이의 공급은 선조체 내 SOD활성과 대뇌 내 GSH-Px활성을 12개월령에서 증가시키는 것으로 나타났고, 녹차군과 항산화 비타민군의 항산화능에는 서로 유의적인 차이가 없었다. 가령에 따라 부위별 뇌조직의 MDA 함량은 증가하였고, GSH-Px 활성은 감소하는 것으로 나타났다 이러한 결과는 3% 녹차 건분 식이의 항산화능 증진효과가 녹차 건분에 함유된 항산화 비타민에 기인한 것일 수 있으며 , 가령에 따라 항산화 효소 활성의 변화가 효소의 종류에 따라 달라질 수 있다는 것을 보여준다.

• 한국식품과학회지
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• 제37권4호
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• pp.624-630
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• 2005

본 연구는 천연물에서의 생리활성물질 동정의 일환으로 Ficus Carica Linnoeus(FCL)로부터 60kDa의 FCL glycoprotein(무화과 당단백질)을 추출한 후, 무화과 당단백질의 첨가에 따른 과산화 지질 라디칼 억제능력 및 생질의 혈장 콜레스테롤 수준과 간 해독효소활성의 개선효과를 평가하였다. In vitro에서 리놀렌산 자동산화반응에 기초한 과산화 지질 라디칼 억제능력을 실험한 결과, 무화과 당단백질을 섭취시킨 농도가 증가함에 따라 과산화 지질 라디칼 억제율은 증가하였다. 한편, 생쥐에게 14일 동안 무화과 당단백질을 50 및 100mg/kg 농도로 섭취시킨 그룹과 무화과 당단백질을 섭취시킨 후 Triton WR-1339를 투여한 생쥐 그룹에서 혈액 및 간조직을 채취하여 혈장 콜레스테롤의 수준변화 및 해독효소의 활성을 측정한 결과, 100mg/kg 농도로 무화과 단백질을 섭취시킨 그룹에서 TC와 LDL-콜레스테롤의 수준은 유의적 감소효과가 나타났다(p<0.05). 또한 Triton WR-1339에 의해 고지혈증이 유발된 생쥐그룹에서도 TC와 LDL-콜레스테롤 수준이 유의적 억제능력을 보였는데, 특히 100mg/kg 농도에서 그 개선 효과는 더욱 분명하였다(p<0.01). 간의 해독효소 중 항산화 기능을 하는 SOD, CAT 그리고 GPx의 활성은 모두 증가되었는데, 특히 GPx는 100mg/kg의 농도에서 유의성을 보이며 증가하였다(p<0.01). 따라서 이러한 결과를 종합하면, 무화과 당단백질이 해득효소의 활성을 증가시킴으로써 체내의 ROS의 수준을 감소시키고, 이러한 항산화 효과가 혈중 콜레스테롤의 수준을 감소시키는데 영향을 미친 것으로 사료된다.

• 한국작물학회지
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• 제53권4호
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• pp.440-446
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• 2008

상시담수 하에서 발아 및 안정적인 입모를 확보하는 것은 담수직파에서 매우 중요한 일이다. 일반적으로 담수 조건에 서는 유묘생장이 억제되지만, 담수 처리 시 초기생육이 우수한 익산429와 담수 처리 시 생육이 저조하며 생존율이 낮은 Woodrose 2품종에 대해 발아 및 초기생육기간 담수 처리하여 혐기대사와 관련된 ADH활성과 항산화효소들의 변화를 관찰하였다. 1. 담수 처리 시 벼는 유아만 신장하며 뿌리는 신장하지 못했고, 익산429가 Woodrose보다 담수상태에서 생존기간이 길었고 생장도 빨랐다. 그러나 무 처리에서는 Woodrose의 생육이 빨랐다. 2. ADH활성은 담수 처리 시 무 담수에 비해 급격히 증가하였고, 익산429가 Woodrose보다 활성이 오래 유지되었는데, 처리 7일째는 익산429가 무처리에 비해 약 7배, Woodrose는 약 2.5배 증가하였다. 4. SOD, POX, CAT 활성 모두 담수 처리에서 무 담수보다 낮았다. 그러나 SOD는 담수시 무 담수에 비해 크게 활성이 낮지는 않았으며 품종 간에는 익산429의 활성이 무 담수 및 담수 처리 모두 Woodrose보다 높았고 담수 시에도 익산429가 Woodrose보다 높게 유지되었다. POX 활성변화는 담수시 익산429가 지속적으로 증가한 반면 Woodrose는 큰 변화가 없었다. CAT활성은 담수 처리 초기부터 아주 낮은 활성을 보여 처리기간 동안 거의 증가하지 않았으나 무 담수시에는 3일까지 활성이 크게 증가하였다. 따라서 담수 처리 시 발아 및 초기생육기간 동안 담수내성이 약한 품종에서 SOD와 POX의 역할이 크고 ADH활성이 높게 유지되어 에너지를 공급할 수 있는 품종이 담수 시 초기생육에 유리할 것으로 사료된다.

• Food Science and Biotechnology
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• 제17권1호
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• pp.106-113
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• 2008

The antioxidant and anti-inflammatory protective effects of $\beta$-glucan from barley on RAW 264.7 murine macrophage cells induced by lipopolysaccharide (LPS) were examined. The RAW 264.7 murine macrophages were preincubated with various concentrations ($0-200\;{\mu}g/mL$) of $\beta$-glucan and stimulated with LPS to induce oxidative stress and inflammation. The $\beta$-glucan treatments were found to reduce thiobarbituric acid-reactive substance (TBARS) accumulation, and enhance glutathione levels and the activities of antioxidative enzymes, including superoxide dismutase (SOD), catalase, glutathione reductase, and glutathione peroxidase (GSH-px) in the LPS-stimulated macrophages as compared to the LPS-only treated cells. Nitric oxide (NO) production was significantly suppressed in a dose-dependent manner (p<0.05) with an $IC_{50}$ of $104\;{\mu}g/mL$. Further treatment with $\beta$-glucan at $200\;{\mu}g/mL$ suppressed NO production to 2% of the LPS-control, and suppressed the levels of inducible nitric oxide synthase (iNOS) protein and mRNA in a dose-dependent manner. The specific DNA binding activity of nuclear factor ${\kappa}B\;(NF{\kappa}B)$ was significantly suppressed by $\beta$-glucan treatment with an $IC_{50}$ of $220\;{\mu}g/mL$ in a dose-dependent manner. Finally, barley $\beta$-glucan ameliorates NO production and iNOS expression through the down-regulation of $NF{\kappa}B$ activity, which may be mediated by attenuated oxidative stress in RAW 264.7 macrophages.

• Toxicological Research
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• 제16권2호
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• pp.125-131
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• 2000

The ethanol extract of Rhus verniciflua Stokes (RVS), the Korean Lacquer tree, was subsequentely isolated and fractioned into two portions using distilled water (SED) and 99% ethanol (SEE) as elution buffers through silica gel column (4x28 em, 22 $\AA$. 28~200 mesh). To know the antioxidative effect of the RVS extracts, primary hepatocytes were exposed to hydroxyl radical generated by 20 mU/$m\ell$ glucose oxidase with SED or SEE for 4 hr. The addition of 100$\mu\textrm{g}$/$m\ell$ SED in culture medium showed good protection from glucose oxidase (GO)-mediated cytotoxicity of hepatocytes, showing approximately equivalent to control. When the hepatocytes were incubated with 100 $\mu\textrm{g}$/$m\ell$ SED or SEE only for 4 hr. the activities of cell-associated superoxide dismutase (SOD) and catalase were elevated up to 1.22 fold and 1.4 fold, respectively, compared to control. Further increase, 1.88fold in SOD activity or 1.64fold in catalase activity, was also observed when the hepatocytes were incubated with 100 units/$m\ell$ of commercial SOD or catalase for 4 hr. Moreover. the glucose oxidase-mediated cytotoxicity in cultured hepatocytes was generally reduced upon addition of lysate obtained from SED or SEE-stimulated hepatocytes in a dose-dependent manner. From these results, we suggest that, in cultured hepatocytes, RVS ethanol extract can efficiently reduce cytotoxicity induced by glucose oxidase and may increase the activity of cell-associated SOD and/or catalase, thereby preventing and/or scavenging superoxides and hydroxyl radicals in this experiment.

• Journal of Ginseng Research
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• 제39권3호
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• pp.206-212
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• 2015

Background: Ginseng total saponin (GTS) contains various ginsenosides. These ginsenosides are widely used for treating cardiovascular diseases in Asian communities. The aim of this study was to study the effects of GTS on cardiac injury after global ischemia and reperfusion (I/R) in isolated guinea pig hearts. Methods: Animals were subjected to normothermic ischemia for 60 minutes, followed by 120 minutes of reperfusion. GTS significantly increased aortic flow, coronary flow, and cardiac output. Moreover, GTS significantly increased left ventricular systolic pressure and the maximal rate of contraction ($+dP/dt_{max}$) and relaxation ($-dP/dt_{max}$). In addition, GTS has been shown to ameliorate electrocardiographic changes such as the QRS complex, QT interval, and RR interval. Results: GTS significantly suppressed the biochemical parameters (i.e., lactate dehydrogenase, creatine kinase-MB fraction, and cardiac troponin I levels) and normalized the oxidative stress markers (i.e., malondialdehyde, glutathione, and nitrite). In addition, GTS also markedly inhibits the expression of interleukin-$1{\beta}$ (IL-$1{\beta}$), IL-6, and nuclear factor-${\kappa}B$, and improves the expression of IL-10 in cardiac tissue. Conclusion: These data indicate that GTS mitigates myocardial damage by modulating the biochemical and oxidative stress related to cardiac I/R injury.