• 생명과학회지
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• 제10권4호
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• pp.347-353
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• 2000

This study was designed to investigate the effects of silkworm (Bombyx mori L.) powder (SWP) on oxygen radicals and their scavenger enzymes in liver membranes of rats. Sprague-Dawley(SD) male rats(160$\pm$10g) were fed basic diet (control group), and experimental diets(SWP-200 and SWP-400 groups) added 200 and 400 mg/kg BW/day for 6 weeks. Hydroxyl radical (.OH) levels resulted in a consistent decreases (4.0% and 7.2%, 5.0% and 14.1%, respectively) in liver mitochondria and microsomes of SWP-200 SWP-400 groups compared with control group, and O2 radical level was significantly decreased about 12% in liver cytosol of SWP-400 group compared with control group. Lipid peroxide(LPO) levels were significantly decreased (14.4% and 9.1%, respectively) in liver mitochondria and microsomes of SWP-400 group only compared with control group. Oxidized protein (OP) levels were remarkably decreased about 12.7% and 16.3% in liver microsomes only of SWP-200 and SWP-400 groups, but significant difference between liver mitochondria could not obtained. Mn-SOD activities were remarkably increased (15.8% and 25.2%, respectively) in mitochondria of SWP-200 and SWP-400 groups, but significant difference between Cu, Zn-SOD activities in these group could be not obtained. GSHPx activity was significantly increased in liver cytosol of SWP-400 group compared with control group. These results suggest that silkworm powder may play an effective role in a attenuating a oxidative stress and increasing a scavenger enzyme activity in liver membranes.

• 한국잠사곤충학회지
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• 제41권3호
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• pp.141-146
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• 1999

This study was designed to investigate the effects of silkworm powder (SWP) on oxygen radicals and their scavenger enzymes in serum of rats. Sprague Dawley (SD) male rats (160${\pm}$10g) were fed experimental diets (SWP-200and SWP-400 groups)added 200 and 400mg/kg BW/day for 6 weeks. Triglyceride (TG)levels were significantly inhibited (10% and 25%) in SWP-200 and SWP-400 groups, but there were no singificant differences in total, LDL-and HDL-cholesterol levels in both SWP-200 and SWP-400 groups. Hydroxyl radical ($.$OH) formations resulted in a marked decreases (about 20%) in both SWP-200 and SWP-400 groups compared with control group. Superoxide radical (O2.-)and hydrogen peroxide formations resulted in a significant decreases in SWP-400 group compared with control group. Lipid peroxide (LPO)and oxidized protein(>C=O group) productions resulted in a significant decreases (SOD) and catalase (CAT) activiteies were remarkably increased (10∼25% and 40∼50%)in SWP-200 and SWP-400groups. Glutathione peroxidase(GSHPX) activities were significantly increased (about 10%) in SWP-400 groups compared with control group. These results suggest that anti-aging effect of silkworm powder (SWP) may play a pivotal role in attenuation a various chronic degenerative diseases age-related changes.

• 생명과학회지
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• 제10권6호
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• pp.570-576
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• 2000

This study was designed to investigate the effects of mulberry (Morus alba L.) leaf extract (MLE) on oxygen radicals and their scavenger enzymes in brain membranes of rats. Sprague-Dawley (SD) male rats (160$\pm$10 g) were fed basic diet (control group), and experimental diets (MLE-100 and MLE-300 groups) added 100 and 300 mg/kg BW/day for 6 weeks. Hydroxyl radical (.OH) lecels resulted in significant decreases (13.4% and 21.1%, 12.0% and 13.4%, respectively) in brain mitochondria and microsome of MLE-100 and MLE-300 groups compared with control group. Superoxide radical ($O_2$) levels were significantly decreased about 12% in brain cytosol of MLE-300 group compared with control group. Lipid peroxide (LPO) levels were effectively inhibited (18.1% and 12.3%, respectively) in brain mitochondria and microsomes of MLE-300 groups compared with control group. Oxidized protein (OP) levels were significantly decreased (14.2%, and 10.9%, respectively) in brain mitochondria and microsomes of MLE-300 groups compared with control group. Mn-SOD activities in brain mitochondria were significantly increased (13.5% and 18.6%, respectively) in MLE-100 and MLE-300 groups, and Cu/Zn-SOD activities in brain cytosol were also effectively increased (about 17.7%) in MLE-300 groups compared with control group. GSHPx activities in brain cytosol were remarkably increased (17.2% and 23.9%, respectively) in MLE-100 and MLE-300 groups compared with control group. These results suggest that anti-aging effect of mulberry leaf extract (MLE) may play a pivotal role in attenuating a various age-related changes in brain.

• 생명과학회지
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• 제10권5호
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• pp.504-510
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• 2000

This study was designed to investigate the effects of mulberry (Morus alba L.) leaf extract (MLE) on oxygen radicals and their scavenger enzymes in liver membranes of rats. Sprague-Dawley (SD) male rats (160$\pm$10 g) were fed basic diet (control group), and experimental diets (MLE-100 and MLE-300 groups) added 100 and 300 mg/kg BW/day for 6 weeks. Hydroxyl radical (.OH) levels resulted in a significant decreases (15.2% and 18.1%, 5.6% and 8.0%, respectively) in liver mitochondria and microsomes could be not obtained. These are no significant differences in superoxide radical ($O_2$) levels of liver cytosol in MLE-100 and MLE-300 groups compared with control group. Lipid peroxide (LPO) levels were slightly decreased about 13.6% and 6.1% in liver mitochondria and microsomes of MLE-300 group compared with control group. Oxidized protein (OP) levels were remarkably decreased about 16.9% and 27.2% in liver microsomes only of MLE-100 and MLE-300 group compared with control group. Mn-SOD activities in liver mitochondria were remarkably increased (18.2% and 28.7%, respectively) in MLE-100 and MLE-300 groups, and Cu,Zn-SOD activities in liver cytosol were also significantly increased (11.3% and 20.2%, respectively) in MLE-100 and MLE-300 groups compared with control group. Mn-SOD activities in liver mitochondria were remarkably increased (18.2% and 28.7%, respectively) in MLE-100 and MLE-300 groups, and Cu,Zn-SOD activities in liver cytosol were also significantly increased (11.3% and 20.2%, respectively) in MLE-100 and MLE-300 groups compared with control group, but significant difference between GSHPx activities in liver cytosol could be not obtained. These results suggest that anti-aging effect of mulberry leaf extract (MLE) may play a pivotal role in attenuating a various age-related changes.

• 생명과학회지
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• 제10권6호
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• pp.577-583
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• 2000

This study was designed to investigate the effect of silk fibroin (Mw 500)power (SFP) on oxygen radicals and their scavenger enzymes in liver membranes of rats. Sprague-Dawley (SD) male rats (160$\pm$10 g) were fed basic diet (control group), and experimental diets (SFP-2.5 and SFP-5.0 groups) added 2.5 and 5.0 g/kg BW/day for 6 weeks. Hydroxyl radical (.OH) levels resulted in a considerable decreases (5.8% and 8.4%, 3.7% and 11.1%, respectively) in liver motochondria and micorsomes of SFP-2.5 and SFP-5.0 groups compared with control group, and $O_2$radical level was remarkably decreased about 15% and 20% in liver cytosol of SFP-2.5 and SFP-5.0 groups compared with control group. Lipid peroxide (LPO) levels were significantly decreased (8.3% and 18.0%, 13.4% and 18.4%, respectively) in liver mitochondria and microsomes of SFP-2.5 and SFP-5.0 groups compared with control group. Oxidized protein (OP) levels were remarkably decreased about 11.6% in liver mitochondria of SFP-5.0 group compared with control group. Mn-SOD activities were remarkably in creased (17.6% and 28.8%, respectively) in mitochondria of SFP-2.5 and SFP-5.0 groups, and Cu/Zn-SOD activities were also effectively in creased (about 14.4%) in liver cytosol of SFP-5.0 groups, but significant difference between GSHPx activity in liver cytosol of these two groups could be not obtained. These results suggest that anti-aging effect of silk fibroin may play an effective anti-aging role in a aattenuating a oxidative stress and increasing a scavenger enzyme activity in liver membranes.

• 한국잠사곤충학회지
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• 제42권2호
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• pp.93-98
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• 2000

This study was designed to investigate the effect of silkworm powder on oxygen radicals and their scavenger enzymes in brain membrances of SD rats. Hydroxyl radical (OH) levels resulted in a considerable decreases in brain mitochondria fraction. Superoxide radical (O$_2$) levels were a slightly decreased in brain cytosol fraction. Lipid peroxide (LPO) and Oxidized protein (OP) levels were significantly decreased in brain mitochondria and microsomes fraction. Mn-superoxide dismutase (SOD) activity was remarkably increased in the mitochondria fraction. Cu and Zn-SOD activities were effectively increased in brain cytosol fraction. GSHPx activity was considerably increased in brain cytosol fraction. These results suggest that anti-aging effect of silkworm plays an effective role in attenuating an oxidative stress and increasing a scravenger enzyme activity in brain membranes.

• 한국잠사곤충학회지
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• 제41권3호
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• pp.135-140
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• 1999

This study was designed to investigate the effects of mulberry leaf extract (MLE) on oxygen radicals and their scavenger enzymes in serum of rats. Sprague-Dawley (SD) male rats (160${\pm}$10g) were fed experimental diets (MLE-100 and MLE-300 groups) added 100 and 300mg/kg BW/day for 6weeks. Triglyceride (TG) levels were significantly inhibited (10% and 20%) in MLE-100and MLE-300 groups, but there were no significant differences in total, LDL-and HDL- cholesterol levels in both MLE-100 and MLE-300 groups. Hydroxyl radical ($.$OH) formations resulted in a marked decreases(20∼25%) in MLE-100 and MLE-300 groups compared with control group, while superoxide radical (O2.-)and hydrogen peroxide formations resulted in a considerable decreases(7∼10% and 5∼10%) in MLE-100 and MLE-300 groups compared with control group. Lipid peroxide (LPO)and oxidized protein(>C=O group) productions resulted in a significant decreases (10% and 6∼10%) in MLE-100 and MLE-300 groups compared with control group. Superoxide dismutase (SOD)and catalase (CAT) activities were remarkably increased (30% and 40∼55%) in MLE-100 and MLE-300 groups, but glutathione peroxidase (GSHPX) activities were significantly increased (10∼15%) in MLE-100 and MLE-300 groups compared with control group. These results suggest that anti-aging effect of mulberry leaf extract (MLE) may play a pivotal role in attenuating a various agerelated changes.

• 생명과학회지
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• 제10권4호
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• pp.340-346
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• 2000

This study was designed to investigate the effects of silk fibroin(Mw 500) powder (SFP) on oxygen radicals and the scavenger enzymes in brain membranes of rats. Spragu-Dawley(SD) male rats(160${\pm}$10g) were fed basic diet(control group), and experimental diets(SFP-2.5 and SFP-5.0 groups) added 2.5 and 5.0g/kg BW/day for 6 weeks. Hydroxyl radical($.$OH) levels resulted in a decreases(6.6% and 9.7%, 2.8% and 11.9%, respectively) in brain mitochondria and microsomes of SFP-2.5 and SFP-5.0 groups compared with control group, but were significantly decreased in these membrances of SFP-5.0 group only. Superoxide radical (O2) levels were a slightly decreased (2.0% and 9.1%, respectively) in brain cytosol of SFP-2.5 and SFP-5.0 groups compared with control group. Lipid peroxide(LPO) levels were significantly decreased (12.9% and 21.9%, 13.2% and 22.5%, respectively) in brain mitochondria and microsomes of SFP-2.5 and SFP-5.0 groups compared with control group. Oxidized protein (OP) levels were significantly decreased (16.7% and 15.7%, respectively) in brain microsomes of SFP-2.5 and SFP-5.0 group compared with control group, but significantly difference between in brain mitochondria of these two groups could not be obtained. Mn-SOD activities were remarkably increased (11.2% and 24.2%, respectively) in mitochodria of SFP-2.5 and SFP-5.0 groups. CuZn-SOD activities were effectively increased (7.7% and 19.6%, respectively) in brain cytosol of SFP-2.5 and SFP-5.0 groups, but significant difference between control and SFP-2.5 groups could be not obtained. GSHPx activities were considerably increased (5.3% and 11.7%, respectively) in brain cytosol of SFP-2.0 and SFP-5.0 groups compared with control group. There results suggest that anti-aging effect of silk fibroin may play an effective learning and memory role in a attenuating a oxidative stress and increasing a scavenger enzyme activity in brain membranes.

• 한국수산과학회지
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• 제33권2호
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• pp.87-92
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• 2000

간장중의 활성산소 및 제거효소의 활성에 미치는 영향을 평가하기 위하여 미역의 건조분말을 $10{\%},\;20{\%},\;40{\%}$-첨가 조제한 미역국수 ($10{\%},\;20{\%},\;40{\%}\;FBA-noodle$)를 4주동안 SD계 흰쥐에 투여하여 미역국수의 생리작용을 평가하였다. $10{\%},\;20{\%},\;40{\%}$ FBA-noodle의 투여그룹의 mitochondria의 ${\cdot}OH$ 생성은 대조그룹 대비 각각 $20{\%},\;25{\%},\;35{\%}$의 현저한 OH 생성 억제효과가 인정되었다. 또한 $10{\%},\;20{\%},\;40{\%}$ FBA-noodle의 투여그룹의 microsome의 ${\cdot}OH$ 생성도 대조그룹 대비 $12{\~}20{\%}$의 유의적인 ${\cdot}OH$ 생성 억제효과가 인정되었다. $10{\%},\;20{\%},\;40{\%}$ FBA-noodle의 microsome의 $H_2O_2$의 생성은 유의적인 억제효과를 인정할 수 없었지만, cytosol중의 $O_2^({\cdot}-)$ 생성은 $20{\%},\;40{\%}$ FBA-noodle에서 $10{\%}$의 $O_2^({\cdot}-)$의 생성 억제효과가 인정되었다. $10{\%},\;20{\%},\;40{\%}$ FBA-noodle 투여그룹의 간장 mitochondria의 Mn-SOD 활성은 대조그룹 대비 $10{\~}15{\%}$의 Mn-SOD 활성의 증가효과가 인정되었다. 간장 microsome의 Mn-SOD 활성은 $10{\%} 및 20{\%}$ FBA-noodle 투여그룹은 Mn-SOD 활성의 유의적인 증가 효과를 인정할 수 없었지만, $40{\%}$ FBA-noodle 투여그룹은 $12{\%}$의 유의적인 Mn-SOD 활성 증가효과가 인정되었다. 또한 $10{\%},\;20{\%},\;40{\%}$ FBA-noodle의 투여그룹의 간장 cytosol의 Cu, Zn-SOD 활성은 대조그룹 대비 $10{\~}20{\%}$의 Cu, Zn-SOD 활성의 유의적인 증가효과가 인정되었다. 한편 간장 cytosol의 글루타치온 퍼옥시다아제 (GSHPx) 활성을 평가하여 보면 $10{\%}, 20{\%}, 40{\%}$ FBA-noodle 투여그룹의 cytosol의 GSHPx 활성은 대조그룹 대비 $20{\~}40{\%}$의 매우 효과적인 GSHPx활성의 증가효과가 인정되었다. $10{\%}, 20{\%}, 40{\%}$ FBA-noodle 투여그룹의 mitochondria의 LPO의 함량을 비교하여 보면 $10{\%}$ FBA-noodle은 유의적인 LPO의 생성 억제효과를 인정할 수 없었지만, $20{\%},\;40{\%}$ FBA-noodle은 $10{\%}$의 유의적인 LPO 생성 억제효과가 인정되었다. $10{\%},\;20{\%},\;40{\%}$ FBA-noodle 투여그룹의 microsome의 LPO의 함량은 $10{\%}$ FBA-noodle은 유의적인 LPO의 생성 억제효과를 인정할 수 없었지만, $20{\%} 및 40{\%}$ FBA-noodle은 약 $10{\~}12{\%}$의 유의적인 LPO 생성 억제효과가 인정되었다.

• 한국균학회지
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• 제29권1호
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• pp.41-46
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• 2001

SD계 랫트를 사용하여 6주 동안 탄수화물 대용으로 50% 및 100%의 Lentinus tuber-regium(LTR)-첨가 투여그룹의 산화적 스트레스 및 방어체계에 미치는 영향을 평가하였다. LTR-50 및 LTR-100 투여그룹은 대조그룹 대비 21.7% 및 16.4%의 매우 유의적인 ${\cdot}OH$ 라디칼의 생성 억제효과가 인정되었고, 이들 두 투여그룹은 대조그룹 대비 약 10%의 $H_2O_2$의 생성 억제효과 및 $6{\sim}10%$ 정도의 바람직한 NO의 생성 억제효과가 인정되었다. 그렇지만 이들 LTR 투여에 의하여 ${O_2}^-$ 라디칼의 생성 억제효과는 인정할 수 없었다. 이들 활성산소의 공격에 의한 산화적 스트레스로서 LPO의 생성은 LTR 투여에 의하여 대조그룹 대비 $6{\sim}12%$의 유의적인 LPO의 생성 억제효과가 인정되었고, OP의 생성은 이들 LTR의 부여에 의하여 대조그룹 대비 5.0% 및 12.8%의 생성 억제효과가 인정되었다. 이들 LTR-50, LTR-100 투여그룹은 대조그룹에 비해 $15{\sim}50%$의 매우 유의적인 SOD의 활성 증가효과가 인정되었고, 또한 이들 LTR투여그룹의 GSHPx은 대조그룹 대비 $10{\sim}25%$의 매우 유의적인 GSHPx의 활성 증가효과가 인정되었다. 한편 CAT의 활성에 미치는 LTR투여의 영향도 대조그룹 대비 $60{\sim}90%$의 매우 유의적인 CAT의 활성 증가효과가 인정되었다. 이상의 결과에서 탄수화물 대용으로 사용된 유용버섯 LTR의 투여는 ${\cdot}OH$ 라디칼, $H_2O_2$ 및 NO의 생성 및 그로 인한 LPO 및 OP 같은 산화적 스트레스를 효과적으로 억제할 수 있을 뿐만 아니라 SOD, GSHPx 및 CAT 같은 방어효소의 활성을 매우 효과적으로 증가할 수 있기 때문에 노화를 매우 효과적으로 억제할 수 있을 것으로 기대된다.