The effect of mulberry (Morus alba L.) leaf extract(MLE) on oxidative stress and membrane fluidity in brain membranes of SD rats fed with 100 and 300 mg/kg BW/day were carried out for 6 weeks. Cholesterol accumulations resulted in a consistent decreases (4.6% and 5.6%, respectively) in brain mitochondria and microsomes of MLE-300 group compared with control group. Membrane fluidities were dose-dependently increased (2.2% and 5.1%, 5.0% and 15.2%) in brain mitochondria and microsomes of MLE-100 and MLE-300 groups compared with control group. Basal oxygen radicals(BORs) in brain mitochondria and microsomes were significantly inhibited (15.7% and 25.1%, 9.0% and 12.4%, respectively) by MLE-100 and MLE-300 groups compared with control group. Induced oxygen radicals(IORs) in brain mitochondria and microsomes were significantly inhibited (8.9% and 13.1%, 16.5% and 23.2%, respectively) by MLE-100 and MLE-300 groups compared with control group. Lipid peroxide (LPO) levels were significantly decreased (8.5% and 18.1%, 7.6% and 12.3%) in brain mitochondria and microsomes of MLE-100 and MLE-300 groups compared with control group. Oxidized protein (OP) levels were dose-dependently decreased (4.3% and 14.2%, 10.0% and 10.9%, respectively) in brain microsomes of MLE-100 and MLE-300 groups compared with control group. These results suggest that MLE may play an effective role in an attenuating an oxidative stress and increasing a membrane fluidity in brain membranes.
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$) levels were significantly decreased about 12% in brain cytosol of MLE-300 group compared with control group. Lipid peroxide (LPO) levels were effectively inhibited (18.1% and 12.3%, respectively) in brain mitochondria and microsomes of MLE-300 groups compared with control group. Oxidized protein (OP) levels were significantly decreased (14.2%, and 10.9%, respectively) in brain mitochondria and microsomes of MLE-300 groups compared with control group. Mn-SOD activities in brain mitochondria were significantly increased (13.5% and 18.6%, respectively) in MLE-100 and MLE-300 groups, and Cu/Zn-SOD activities in brain cytosol were also effectively increased (about 17.7%) in MLE-300 groups compared with control group. GSHPx activities in brain cytosol were remarkably increased (17.2% and 23.9%, respectively) in MLE-100 and MLE-300 groups compared with control group. These results suggest that anti-aging effect of mulberry leaf extract (MLE) may play a pivotal role in attenuating a various age-related changes in brain.
This study was designed to investigate the effects of silkworm (Bombyx mori L.) powder (SWP) on oxygen radicals and their scavenger enzymes in liver membranes of rats. Sprague-Dawley(SD) male rats(160$\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.
Sprague-Dawley male rats were fed experimental diet, and also were orally daministerred with 3.0% ultra low viscosity (ULV) sodium alginate-added functional drink(AL-3.0% group : HAEJOMIN), 5.0% polyedxtrose(PD)-added drink(PD-5.0group) and 2.5% polydextrose-added drink(PD-2.5 group) for 8 weeks. Effect of rhese dietary fiber-added functional drinks on body weight, feed and gross efficincies, triglyceride and cholesterol levels, LDL- cholesterol levels, hydroxyl radical and malondialdehyde levels, and superoxide dismutase (SOD) activity in serum of SD rats were evaluated. Administration of AL-3.0 drink and PD-5.0 drink resulted in a marked inhibition in increase of body weight compared with control and PD-2.5 groups for 8 weeks. Inhibition effect in body weight in 3.0% alginic acid-added drink )AL-3.0 froup_ showed a same trend in 5.0% polydextrose(PD)-added drink (PD-5.0 group)(p<0.001). Therefore, it is found that inhibition effects of obesity in 3.0% alginic acid-added drink were higher 2 times than that in same concentration of polydextrose(PD)-added drink. Triglyceride and cholesterol levels in AL-3.0 and PD-5.0 groups significantly decreased to 25$\sim$30% compared with control group(p<0.01$\sim$0.001), but there were no significant differences in these drinks. LDL-cholesterol levels in AL-3.0 group significantly decreased about 15% compared with PD-5.0 group, but atherogenic index in AL-3, 0 group showed a similar trend to that in PD-5.0 group. Hydroxyl radical formations and lipid peroxide(LPO) levels in AL-3, 0 and PD-5.0 groups significantly decreased to 15% and 20%, respectively, compared with control group(p, 0.05$\sim$0.01), but there were no significant differences in these drinks. Superoxide, dismutase(SOD) activity in AL-3.0 group significantly higher (about 255) than those in control and PD-5.0 groups(p<0.01). These results suggest that administration of ULV-sodium alginate-added functional drink(HAEJOMIIN) effectively can not only inhibit obesity, but also can intervent chronic degenerative disease and aging process.
Curcumin is a major active component of the food flovour tumeric. It has been used for the treatment of many diseases such as inflammatory and infectious diseases, cancer and other disease due to its antioxidant properties. Curcumin is a powerful scavenger of many free radicals such as superoxide anion, hydroxyl radical and nitric oxide. The objective of this study was to investigate the antioxidative effects of curcumin against hydrogen peroxide on semen quality during in vitro storage of boar semen. The sperm treated with different concentration of curcumin (1, 5 and 10 ${\mu}M$) in the presence or absence of hydrogen peroxide (250 ${\mu}M\;H_2O_2$) were incubated for 3, 6 and 9 hr at $37^{\circ}C$ and analyzed sperm characteristics such as motility, membrane integrity (MI), lipid peroxidation (LPO), reactive oxygen species (ROS) and DNA fragmentation (DF). The sperm motility and MI in $H_2O_2$ treated group ($47.8%{\pm}6.8$ and $24.8%{\pm}2.2$) were significantly decreased when compare to curcumin treated group ($79.8%{\pm}2.7$ and $34.6%{\pm}1.0$, respectively) irrespective of incubation periods(p<0.05). The LPO of spermatozoal plasma membrane was measured by thiobarbituric acid (TBA) reactions for malondialdehyde (MDA), MDA level in control ($11.6{\pm}0.6\;nmol/L{\times}10^6$) and curcumin groups ($10.7{\pm}0.3\;nmol/L{\times}10^6$) were lower than those of curcumin plus $H_2O_2$ ($17.1{\pm}0.8\;nmol/L{\times}10^6$) or $H_2O_2$ group ($22.5{\pm}1.9\;nmol/L{\times}10^6$) from 3 to 9 hr incubation periods. The DF by sperm chromatin dispersion (SCD) test and ROS production measured by 2',7'-dichlorofluorescein (DCF) fluorescence intensity were no significantly difference through all experimental groups (p>0.05). Correlation among evaluation methods for sperm quality, motility vs MI and DF vs ROS was positively correlated while motility vs DF and ROS vs LPO were negatively correlated in all treatment groups. These results demonstrate that curcumin can effectively improve the sperm quality during in vitro storage of boar semen through its hydrogen peroxide scavenging mechanism as an antioxidant.
This study was designed to investigate the effects of sea tangle(Laminaria japonica) extract (Dasi-Ex group: dry base $4.0{\%}$) and fucoidan-added (Fuco-I, II, III group: fucoidan of $1.0{\%}, 2.0{\%}, 3.0{\%}$ added to Dasi-EX) drinks on lipid metabolism of stressed mice. ICR male mice ($20 {\pm} 2 g$) were fed experimental diets and given free through water bottle filled with these beverages instead of water for 18 days including sociopsychological stress of 4 days. Dasi-Ex and Fuco-I, II, III groups resulted in slight decreases $3{\$}$ in body weight gain and $6{\~}12{\%}$ in feed and gross efficiencies compared with control groups. Serum protein contents were slightly increased $1{\~}5{\%}$ by administrations of these beverages compared with control group, reflecting inhibitory effect of sociopsychological stress by increase of protein levels. Significant differences in serum cholesterol contents of Dasi-Ex and Fuco-I groups could not be obtained, but Fuco-II and III groups resulted in marked decreases ($13{\~}17{\%}$) in serum cholesterol contents compared with control group. LDL-cholesterol contents resulted in marked decreases ($about 20 and 25{\%}$, respectively) in Fuco-II and III groups, whereas HDL-cholesterol content was significantly increases ($about 16{\%}$) in Fuco-III group compared with control group. Fuco-I, II and III groups resulted in a marked decreases ($15{\%}, 20{\%} and 40{\%}$, respectively) in atherogenic index (AI) compared with control group. Significant differences in serum lipid peroxide (LPO) contents of Dasi-Ex and Fuco-I groups could not be obtained, but Fuco-II and III groups resulted in a significant decrease about $10{\%}$ in serum LPO contents compared with control group. These results suggested that fucoidan drinks added sea tangle could significantly inhibited chronic degenerative diseases by improvement of effective lipid metabolism or fucoidan component.
Journal of the Korean Society of Food Science and Nutrition
/
v.20
no.2
/
pp.111-120
/
1991
In order to investigate the cellular peroxidative damage due to heated oil intake and the preventive effect of vitamin E on it rats were fed heated corn oil with acid value of 4.02 at the level of 10 Cal% and three different levels of vitamin E that were 0, 40 and 200 mg/kg diet. Control group was fed fresh corn oil and 40mg/kg diet of vitamin E. After ech feeding period of 0, 3 and 6 weeks, liver superoxide dismutase (SOD), glutathione peroxidase (GPX) activities and microsomal content of vitamin E and lipid peroxide (LPO) were measured as well as cellular morphology was examined. SOD activities and LPO contents were higher, while GPX activities and vitamin e contents were lower in heated oil groups than control group. Electromicroscopic observation revealed the loss of inner mitochondrial membrane and cristae and irregular arrangement of nuclear membrane and chromatin in heated oil groups. As dietary vitamin e level was increased, SOD activity and LPO content were decreased, but GPX activity and vitamin E content in the liver increased and cellular peroxidative damage reduced progressively. This phenomena was more remarkable in 6 weeks of feeding than 3 weeks.
White-skinned sweet potato (Ipomoea batatas L.) has been traditionally used for diabetes treatment and management in many countries. In this experiment, methanol extract of white-skinned sweet potato (WSPMe) at a dose of 100 or 200 mg/kg body weight was tested to evaluate its effect on renal damage in streptozotocin (STZ)-induced diabetic rats. Its efficacy was compared with that of insulin secretogogue, glimepiride ($50\;{\mu}g/kg$ body weight). Experimental diabetes was induced by a single dose of STZ (45 mg/kg, i.p.) injection. The WSPMe and glimepiride were administered orally for 14 days and the effects on glucose, renal markers including blood urea nitrogen (BUN), creatinine and lactate dehydrogenase (LDH), lipid peroxide (LPO) level, antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathion-S-transferase (GST) activities in kidney were studied. An increase in BUN, creatinine, LDH, glucose, LPO levels and decrease in SOD, CAT, GPx and GST features were observed in diabetic control rats. Administration of WSPMe at a dose of 200 mg/kg body weight caused a significant improvement in blood glucose, LPO level, renal markers, lipid peroxidation markers and increased antioxidant levels in diabetic kidney. In conclusion, the WSPMe was found to be effective in reducing oxidative stress, thus confirming the ethnopharmacological use of I. batatas L. in protecting diabetes and its complications.
Kim, Ju-Sung;Hong, Min-Jung;Kim, Do-Rim;Park, Eun-Hwa;Chang, Mun-Seog;Park, Seong-Kyu
The Korea Journal of Herbology
/
v.27
no.2
/
pp.37-42
/
2012
Objectives : The purpose of this study is to examine the antioxidant effects on male mouse reproductive cells of the extract of Platycladi Semen. Methods : The extract was studied for diphenyl-picryl-hydrazyl (DPPH) radical scavenging activity, cell viability by a modified MTT assay, the effects on $H_2O_2$-induced cytotoxicity by MTT assay, lipid peroxidation by malondialdehyde (MDA) formation and super oxide dismutase (SOD), respectively. Results : The results showed that the extract scavenged DPPH radical in a dose-dependent manner by up to 74.87%. The cell viability of the extract was within 72~96% on Leydig cells and GC-2 cells at concentrations of 1, 5, 10, 50 and 100 ug/ml. The hydrogen peroxide-induced cytotoxicity of Leydig cells was protected to 72.09% by the extract at concentration of 100 ${\mu}g/ml$. The hydrogen peroxide-induced lipid peroxidation of MDA formation was decreased to 1.80 and 1.65 nmoles/mg protein by the extract at concentrations of 50 and 100 ${\mu}g/ml$. The extract at all concentrations, SOD activity was not significantly changed. Conclusions : In conclusion, the extract of Platycladi Semen has antioxidant effects on Leydig cells and protect male reproductive system against oxidative stress.
Objectives : Previously we reported that the roots of Panax ginseng C.A. Meyer (Araliaceae) increased sperm count and motility. also induced spermatogenesis via cAMP-responsive element modulator(CREM) activation in rat testes. In this study, for the first step of spermatogenesis in germ cell lines, the antioxidant activity of Panax ginseng were examined in mouse GC-1 spermatogonia cells. Methods : The extract was studied on diphenyl-picryl-hydrazyl (DPPH) radical scavenging activity, GC-1 cell viability by a modified MIT assay. H202-induced cytotoxicity by MIT assay and lipid peroxidation by malondialdehyde (MDA) formation. respectively. Results: The results showed that the extract scavenged DPPH radical with the IC50 being 0.631 mg/mi. The extract at concentrations of 5, and 10, 50, 100, 250 ${\mu}$g/mi increased GC-1 cell viability significantly(p < 0.05, and p < O.O1). Hydrogen peroxide-induced cytotoxicity (73.8%, p < O.O1) was blocked by the extract at concentrations of 50, and 100, 250, 500 ${\mu}$g/ml significantly (p < 0.05, and p < O.O1). The extract at concentrations of 10. and 50 ${\mu}$g/ml decreased the MDA formation on hydrogen peroxide-induced lipid peroxidation. Conclusions : In conclusion, the extract of Panax ginseng has potent antioxidant activity and increases the survival rate of GC-1 spg cells against $H_20_2$-induced cytotoxicity.
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