To investigate the availability of nitrogen decomposed and released from liquid pig manure (LPM), this experiment was performed with red pepper (Capsicum annuum L., cv. Hanbando), and Chinese cabbage (Brassioa campestris L., cv. Konaenggiyeureumbaechoo) in 2001. Based on the total nitrogen of chemical fertilizer, both red pepper and chinese cabbage were treated with three and four applications of LPM, respectively. Yield of red fruits in the red pepper was increased by an enhancement of LPM application. However, that of chinese cabbage was enhanced with a reducing supply of LPM. Biosynthesis of polyamine in both crops such as red pepper and chinese cabbage was large in the early growth stage and was not increased by LPM application. The high biosynthesis of bound polyamine, monoamine and diamine, in the early growth stage was changed in an increase of conjugated polyamine and polyamine with a process of crop growth. Inorganic components in the leaf of red pepper by LPM application were equal or slightly lower than in chemical fertilizer, however, from the middle growth stage, contents of phosphate and potassium were increased. Those of chinese cabbage were slightly decreased from the early growth stage to the late. Considering this experiment, the thoughtless supply of LPM has not resulted in certain crop damages, and an application of LPM to increase a yield was different from crop species at some extent.
Seo, Dae Yun;Lee, SungRyul;Figueroa, Arturo;Kwak, Yi Sub;Kim, Nari;Rhee, Byoung Doo;Ko, Kyung Soo;Bang, Hyun Seok;Baek, Yeong Ho;Han, Jin
Nutrition Research and Practice
/
v.6
no.6
/
pp.513-519
/
2012
Aged garlic extract (AGE) is known to have a protective effect against immune system, endothelial function, oxidative stress and inflammation. We examined the effects of exercise with and without aged garlic extract administration on body weight, lipid profiles, inflammatory cytokines, and oxidative stress marker in high-fat diet (HFD)-induced obese rats. Forty-five Sprague-Dawley rats were fed either a HFD (HFD, n = 40) or a normal diet (ND, n = 5) for 6 weeks and thereafter randomized into ND (n = 5), HFD (n = 10), HFD with AGE (n = 10), HFD with Exercise (n = 10), or HFD with Exercise+AGE (n = 10) for 4 weeks. AGE groups were administered at a dose of 2.86 g/kg body weight, orally. Exercise consisted of running 15-60 min 5 days/week with gradually increasing intensity. AGE (P<0.01), Exercise, and Exercise+AGE (P<0.001) attenuated body weight gain and food efficiency ratio compared to HFD. Visceral fat and liver weight gain were attenuated (P<0.05) with all three interventions with a greater effect on visceral fat in the Exercise+AGE than AGE (P<0.001). In reducing visceral fat (P<0.001), epididymal fat (P<0.01) and liver weight (P<0.001), Exercise+AGE was effective, but exercise showed a stronger suppressive effect than AGE. Exercise+AGE showed further additive effects on reducing visceral fat and liver weight (P<0.001). AGE significantly attenuated the increase in total cholesterol and low-density lipoprotein-cholesterol compared with HFD (P<0.05). Exercise+AGE attenuated the increase in triglycerides compared with HFD (P<0.05). Exercise group significantly decrease in C-reactive protein (P<0.001). These results suggest that AGE supplementation and exercise alone have anti-obesity, cholesterol lowering, and anti-inflammatory effects, but the combined intervention is more effective in reducing weight gain and triglycerides levels than either intervention alone.
We investigated the inhibitory effects of solvent extracts from dried yam on $H_2O_2$-induced oxidative stress and growth of cancer cell lines (HT1080 human fibrosarcoma and HT-29 human colon cancer cells). Yam (Dioscoreacea) has been recognized as a healthy food due to its various biological activities, such as anti-obesity, anti-constipation, anti-proliferation, and anti-mutagenic activities, as well as its ability to decrease blood glucose and cholesterol levels. In order to determine the protective effect on $H_2O_2$-induced oxidative stress, DCFH-DA (dichlorodihydrofluorescin diacetate) assay was conducted. Acetone with methylene chloride (A+M) extract of dried yam appeared to reduce the levels of intracellular reactive oxygen species (ROS) with dose responses. Among the fractions, 85% aq. methanol fraction showed the highest protective effect on production of lipid peroxides. Inhibitory effects of A+M and methanol (MeOH) extracts on the growth of HT1080 and HT-29 cancer cells increased in a dose dependent manner. The treatments of n-hexane, 85% aq. methanol and n-butanol fractions (${\geqq}0.5$ mg/ml concentrations) significantly inhibited the growth of both cancer cells (p<0.05). From these results, 85% aq. methanol fraction showed inhibitory effects on cellular oxidation and growth of human cancer cells, suggesting that this fraction may contain active compounds of dried yam.
Journal of the Korean Society of Food Science and Nutrition
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v.33
no.4
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pp.653-658
/
2004
Oxidative stress is currently suggested as a mechanism underyling diabetes. Accordingly, the present study was designed to evaluate the effect of Aralia elate water extracts (AEW) on activities of hepatic oxygen free radical generating and scavenging enzymes in streptozotocin (STZ)-induced diabetic rats. Male Wistar rats divided into nondiabetic group, diabetic group, and diabetic-AEW supplemented group. The extract was supplemented in 1.14% of raw Aralia elata/kg diet for 7 weeks. Diabetes was induced by injecting STZ (55 mg/kg BW, ip) once 2 weeks before sacrifying. The hepatic cytochrome P-450 content, xanthine oxidase and aminopyrine N-demethylase activities were significantly lowered in the diabetic group compared to the nondiabetic group. Whereas, the activities of aniline hydroxylase and oxygen free radical scavenging enzymes, superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glucose-6-phosphate dehydrogenase and glutathione S-transferase, were significantly higher in the diabetic group than in the nondiabetic group. However, the supplementation of AEW normalized these enzyme activities in STZ-induced diabetic rats. When the AEW was supplemented with the diabetic rats, hepatic glutathione content was markedly elevated as well as lipid peroxide level was significantly lowered compared to those of the diabetic group. Thus, these results suggested that AEW supplement enhanced the activities of oxygen species metabolizing enzymes in STZ-induced diabetic rats.
Journal of Physiology & Pathology in Korean Medicine
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v.23
no.2
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pp.351-359
/
2009
Etiological studies of diabetes and its complications showed that oxidative stress might play a major role, Therefore, many efforts have been tried to regulate free oxygen radicals for treating diabetes and its complications. Mori Fructus extract has been known to be effective for the antidiabetic, antihyperlipidemic and antiobesitic prescription, and composed of four crude herbs, The aim of this study was to investigate the effect of Mori Fructus extract in male ob/ob mouse with severe obesity, hyperinsulinemia, hyperglycemia, hyperlipidemia. Mice were grouped and treated for 5 weeks as follows. Both the lean (C57BL/6J black mice) and diabetic (ob/ob mice) control groups received standard chow. The experimental groups were fed with a diet of chow supplemented with 7.5, 15 and 30 mg Mori Fructus extract per 1 kg of body weight for 14 days. The effects of Mori Fructus extract on the ob/ob mice were observed by measuring the serum levels of glucose, insulin, lipid components, and the kidney levels of reactive oxygen species (ROS), MDA+HAE, GSH and also the enzyme activities involved in polyol pathway. Western blotting was performed using anti-AGE, anti-RAGE respectively. Mori Fructus extract lowered the levels of serum glucose and insulin in a dose dependent manner. Total cholesterol, triglyceride and free fatty acid levels were decreased, while the HDL-cholesterol level was increased, in Mori Fructus extract treated groups. Renal aldose reductase and sorbitol dehydrogenase activities were increased in the ob/ob mice, whereas those were inhibited in the Mori Fructus extract-administered groups. Mori Fructus extract inhibited the generation of ROS in the kidney. MDA+HAE level was increased and the GSH level was decreased in the ob/ob mice, whereas those were improved in the Mori Fructus extract-administered groups. Mori Fructus extract inhibited the expression of AGE, RAGE in the ob/ob mice. The results suggested that Mori Fructus exerted the antidiabetic and antihyperlipidemic activities by regulating the activities of polyol pathway enzymes, scavenging the ROS, decreasing the MDA+HAE level, increasing the GSH level and inhibiting the expression of AGE, RAGE in the ob/ob mice.
This study examined the antioxidant activity and neuroprotective effects of ethanol extracts obtained from Diospyros kaki core (DCE). The total polyphenol and flavonoid contents in DCE was 786.47±15.27 and 31.14±0.82 mg/g, respectively. In addition, DCE exhibited a dose-dependent induction of radical scavenging activity, determined by 1,1-diphenyl-picrylhydrazyl (DPPH), 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonicacid) (ABTS), ferric reducing antioxidant power (FRAP), and reducing power assays. The viability of HT22 hippocampal cells was examined to investigate the neuroprotective effect of DCE. DCE treatment did not induce cytotoxicity at concentrations below 1,000 ㎍/mL. Additionally, DCE treatment in the background of H2O2 induce oxidative stress revealed a significant increase in the survival rat, indicated by increased SOD activity and decreased levels of MDA, a lipid peroxidation product. Therefore, the results suggest that DCE can be used as a source of natural antioxidants source and a therapeutic agent for the treatment of brain disorders induced by oxidative stress and neuronal damage.
Journal of the Korean Society of Food Science and Nutrition
/
v.41
no.8
/
pp.1106-1111
/
2012
It is shown that the risk of chronic disease is increased not only by the concentration of fat in the diet but also by the composition of dietary fatty acids. We investigated the anti-oxidant effects of vitamin E on dietary polyunsaturated fatty acid-fed mice. Ninety male Sprague-Dawley rats were randomly divided into 9 groups: a normal diet group (C), 4 dietary polyunsaturated fatty acid diet groups (OA, LA, LNA, DHA), and 4 dietary polyunsaturated fatty acid diet with 0.05% vitamin E groups (OAE, LAE, LNAE, DHAE). The food efficiency in the dietary polyunsaturated fatty acid diet groups was higher than in the normal diet groups. The concentration of malondialdehyde (MDA) was significantly increased by LA and DHA fatty acids. Vitamin E significantly decreased LA and LHA-induced lipid peroxidation. The activity of superoxide dismutase and glutathione peroxidase was increased in the dietary polyunsaturated fatty acid diet groups compared to the control group, while these were decreased by supplements with vitamin E, except in the OAE group. Also, the protein expression of CYP2E1 was significantly increased in only the LNA group, while these were decreased by supplements with vitamin E. These results taken together indicate that vitamin E may have positive effects on a dietary polyunsaturated fatty acid diet-induced oxidative stress in brain tissue.
Li, Y.;Ma, Q.G.;Zhao, L.H.;Guo, Y.Q.;Duan, G.X.;Zhang, J.Y.;Ji, C.
Asian-Australasian Journal of Animal Sciences
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v.27
no.6
/
pp.907-915
/
2014
Alpha-lipoic acid (${\alpha}$-LA) is not only involved in energy metabolism, but is also a powerful antioxidant that can protect against hepatic oxidative stress induced by some drugs, toxins, or under various physiological and pathophysiological conditions. Here, we investigated the effect of ${\alpha}$-LA against liver oxidative damage in broilers exposed to aflatoxin $B_1$ ($AFB_1$). Birds were randomly divided into four groups and assigned different diets: basal diet, 300 mg/kg ${\alpha}$-LA supplementation in basal diet, diet containing 74 ${\mu}g/kg$$AFB_1$, and 300 mg/kg ${\alpha}$-LA supplementation in diet containing 74 ${\mu}g/kg$$AFB_1$, for 3 weeks. The results revealed that the addition of 300 mg/kg ${\alpha}$-LA protected against the liver function damage of broilers induced by chronic low dose of $AFB_1$ as estimated by a significant (p<0.05) change in levels of plasma total protein, albumin, alkaline phosphatase and the activities of liver glutamic-oxalacetic transaminase and glutamic-pyruvic transaminase. The histopathological analysis also showed that liver tissues were injured in the $AFB_1$ diet, but this effect was alleviated by the addition of 300 mg/kg ${\alpha}$-LA. Additionally, $AFB_1$ induced a profound elevation of oxidative stress in birds, as indicated by an increase in malondialdehyde level, a decrease in glutathione peroxidase activity and a depletion of the glutathione content in the liver. All of these negative effects were inhibited by treatment with ${\alpha}$-LA. Our results suggest that the inhibition of $AFB_1$-induced excess production of lipid peroxides and the maintenance of intracellular antioxidant status may play important roles in the protective effects of ${\alpha}$-LA against $AFB_1$-induced oxidative damage in the liver.
Adeyemi, Kazeem D.;Sabow, Azad B.;Aghwan, Zeiad A.;Ebrahimi, Mahdi;Samsudin, Anjas A.;Alimon, Abdul R.;Sazili, Awis Q.
Journal of Animal Science and Technology
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v.58
no.2
/
pp.6.1-6.11
/
2016
Background: Dietary supplementation of unsaturated fats in ruminants, if not stabilized, can instigate oxidative stress which can have negative impact on production performance and enhance the susceptibility to various diseases. The current study examined the effect of dietary 80 % canola oil and 20 % palm oil blend (CPOB) on serum fatty acids, antioxidant profile and biochemical indices in goats. Thirty Boer bucks (4-5 months old; initial BW, $20.34{\pm}0.77kg$) were randomly assigned to diets containing 0, 4 or 8 % CPOB and fed daily for a period of 90 days. Blood was sampled from the goats on 0, 30, 60 and 90 days of the trial and the serum was analyzed for fatty acids, cholesterol, glucose, total protein, antioxidants and lipid oxidation. Results: Neither diet nor sampling time influenced serum TBARS value, catalase, glutathione peroxidase and superoxide dismutase activities, LDL cholesterol, VLDL cholesterol, triglycerides, glucose and total protein. Goats fed 4 and 8 % CPOB had higher (P < 0.05) total cholesterol and HDL cholesterol than the control goats on day 30, 60 and 90. The proportion of C15:0 decreased with increasing level of CPOB on day 30 and 60. Serum C18:1n-9 increased with increasing level of CPOB in diet on day 60. The proportion of C18:3n-3 and C22:5n-3 increased (P < 0.05), while the proportion of C18:2n-6 decreased (P < 0.05) with increase in the level of CPOB on day 60 and 90. Dietary CPOB did not affect serum total carotenoid and ${\delta}$-tocopherol but did increase (P < 0.05) ${\alpha}$ and ${\gamma}$-tocopherol. Conclusion: Dietary canola oil and palm oil blend could be supplemented in diets without instigating oxidative stress in goats.
Hyperlipidemia has been reported to be associated with the development of fatty liver. Palmitic acid, a major saturated fatty acid, is involved in the development of diverse diseases. The activation of mitogen activated protein kinases (MAPKs), such as Jun N-terminal kinase (INKs) and p38 MAPK is implicated in the apoptosis in diverse cells. Thus, this study was conducted to investigate the effects of palmitic acid on apoptosis and its relationship between JNK and p38 MAPK in cultured rat hepatocytes. In the present study, palmitic acid (>50 uM) decreased cell proliferation and increased lactate dehydrogenase activity in hepatocytes, which was blocked by the treatment of SP600125 (a JNK inhibitor) and SB203580 (a p38 MAPK inhibitor). Indeed, palmitic acid decreased Bcl-2 expression but increased Bax expression in rat hepatocytes, which was blocked by the treatment of SP600125 and SB203580. In addition, palmitic acid decreased glutathione (GSH) content and increased lipid peroxide formation, which was blocked by the treatment of SP600125 and SB203580. Western immunoblotting analysis also revealed that palmitic acid increased JNK and p38 MAPK. In conclusion, palmitic acid induced apoptosis through oxidative stress via JNK and p38 MAPK activation in rat hepatocytes.
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