Objective: This study was designed to investigate the hypothesis that dietary quercetin (QUE) and coated sodium butyrate (SB) supplementation alleviate oxidative stress in the small intestine of diquat (DIQ)-challenged pullets. Methods: A total of 200 13-week-old pullets were divided into four groups: the control group (CON), the DIQ group, the QUE group, and the coated SB group, and injected intraperitoneally with either saline (CON) or diquat (DIQ, QUE, and SB) to induce oxidative stress on day 0. Results: On the first day, the malondialdehyde and superoxide dismutase (SOD) concentrations in the SB group were significantly different from those in the DIQ and QUE groups (p<0.05), and dietary supplementation with SB increased serum glutathione peroxidase (GSH-PX) levels compared with the DIQ group (p<0.05). Quercetin and SB increased the levels of CLAUDIN-1 and zonula occludens-1 (ZO-1) in the jejunum. On the tenth day of treatment, QUE attenuated the decrease in GSH-PX levels compared to those of the CON group (p<0.05), while SB increased SOD, GSH-PX, and total antioxidant capacity levels compared to those of the DIQ group. Nuclear factor erythroid 2-related factor 2 (NRF2) and heme oxygenase-1 (HO-1) mRNA levels in the QUE and SB groups increased (p<0.05) and CLAUDIN-1 mRNA levels in the QUE and SB groups were upregulated compared to those in the DIQ group ileum tissue. Conclusion: Supplementation of QUE and SB demonstrated the ability to relieve oxidative stress in pullets post DIQ-injection with a time-dependent manner and QUE and SB may be potential antioxidant additives for relieving oxidative stress and protecting the intestinal barrier of pullets.
Hyo Lim Lee;Jong Min Kim;Min Ji Go;Seung Gyum Joo;Tae Yoon Kim;Han Su Lee;Ju Hui Kim;Jin-Sung Son;Ho Jin Heo
Journal of Microbiology and Biotechnology
/
v.34
no.3
/
pp.606-621
/
2024
This study evaluated the hepatoprotective effect of fermented Protaetia brevitarsis larvae (FPB) in ethanol-induced liver injury mice. As a result of amino acids in FPB, 18 types of amino acids including essential amino acids were identified. In the results of in vitro tests, FPB increased alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) activities. In addition, FPB treatment increased cell viability on ethanol- and H2O2-induced HepG2 cells. FPB ameliorated serum biomarkers related to hepatoxicity including glutamic oxaloacetic transaminase, glutamine pyruvic transaminase, total bilirubin, and lactate dehydrogenase and lipid metabolism including triglyceride, total cholesterol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol. Also, FPB controlled ethanol metabolism enzymes by regulating the protein expression levels of ADH, ALDH, and cytochrome P450 2E1 in liver tissue. FPB protected hepatic oxidative stress by improving malondialdehyde content, reduced glutathione, and superoxide dismutase levels. In addition, FPB reversed mitochondrial dysfunction by regulating reactive oxygen species production, mitochondrial membrane potential, and ATP levels. FPB protected ethanol-induced apoptosis, fatty liver, and hepatic inflammation through p-AMP-activated protein kinase and TLR-4/NF-κB signaling pathways. Furthermore, FPB prevented hepatic fibrosis by decreasing TGF-β1/Smad pathway. In summary, these results suggest that FPB might be a potential prophylactic agent for the treatment of alcoholic liver disease via preventing liver injury such as fatty liver, hepatic inflammation due to chronic ethanol-induced oxidative stress.
This study was conducted to examine the effects of a supplemented Chungkukjang diet on oxidative stress and antioxidant nutrients in Streptozotocin (STZ, 45 mg/kg of BW, IP injection)-induced diabetic rats. Diets that contained soybean Chungkukjang powder (SC), Yakkong Chungkukjang powder (YC), and Yakkong Chungkukjang powder with black food added (YCB) were administered to the STZ-induced diabetic rats for seven weeks. The increased lipid peroxide contents of their serum and liver were slightly controlled by providing them three types of Chungkukjang. The retinol level in the serum was 7.5 times higher in the STZ-induced diabetic group after the provision of YC. The total antioxidant capacity (TAC) level in the serum was higher in the STZ-induced diabetic group after the provision of YCB. Also, the retinol and tocopherol levels in the liver of the STZ-induced diabetic rats increased after they were provided YCB, and the decreased reduced glutathione (GSH) /oxidized glutathione (GSSG) level in their liver improved after they were fed a diet that contained YC. Moreover, the decreased anthocyanin level in the liver of the STZ-induced diabetic group improved after the provision of three types of Chungkukjang powder. These findings suggest that the Chungkukjang diet is a valuable food for the management of the health of diabetic patients and for the prevention of diabetic complications.
Journal of the Korean Society of Food Science and Nutrition
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v.40
no.12
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pp.1726-1733
/
2011
We performed a randomized placebo-controlled trial to determine whether or not Ishige okamurae extract supplements modulate blood glucose and antioxidant systems in type 2 diabetic patients. A total of 46 patients were randomized to either an Ishige okamurae extract group or a placebo group. The patients consumed either 1,600 mg of Ishige okamurae extract or cornstarch supplement per day for 10 weeks. The lifestyle factors and dietary intake of patients were not altered during the 10 week trial period. After 10 weeks, the fasting blood glucose level was slightly decreased in the Ishige okamurae extract group, but a significant decrease was not observed. Also, glycosylated hemoglobin was significantly (p<0.01) decreased. Especially, low-glycosylated hemoglobin ($7.12{\pm}0.38%$ to $6.56{\pm}0.53%$) was significantly decreased compared to high-glycosylated hemoglobin ($8.65{\pm}0.92%$ to $8.60{\pm}0.85%$) in that group. The superoxide dismutase, catalase, and glutathione peroxidase levels were increased in the Ishige okamurae extract group compared to the placebo group. The increase of these enzymes was associated with the decrease of MDA concentration in the Ishige okamurae extract group, but a significant decrease was not observed. The Ishige okamurae extract supplement showed no adverse effects on liver and kidney functions. Findings from this study suggest that an Ishige okamurae extract supplement can help blood glucose status in type 2 diabetic patients without adverse effects.
Journal of the Korean Society of Food Science and Nutrition
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v.33
no.7
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pp.1206-1211
/
2004
This study was conducted to evaluate the effects of selenium binding yeast peptide supplementation on growth performance, tissue Se, serum glutathione peroxidase activity and meat quality in finishing pigs. A total of eighty (Duroc${\times}$Yorkshir${\times}$Landrace) pigs (82.88$\pm$1.23 kg average initial body weight) were used in a 35-day assay. Dietary treatments included 1) CON (basal diet), 2) SY1 (CON diet+0.05% selenium binding yeast peptide), 3) SY2 (CON diet+0.l% selenium binding yeast peptide) and 4) SY3 (CON diet+0.2% selenium binding yeast peptide). Overall period, average daily gain of pigs fed selenium binding yeast peptide diet was higher than that of pigs fed CON diet, however, there was not significant difference (p>0.05). L* (lightness) value of M. longissimus dorsi was higher in SY2 than CON and SY3 (p<0.05). a* (redness) value of M. longissimus dorsi was lower in CON than other treatments (p<0.05). Selenium content in serum was increased as adding selenium binding yeast peptide compared to pigs fed CON diet. However, there was not significantly different among the treatments (p>0.05). Selenium content of M. longissimus dorsi was higher in SY2 (0.021 $\mu$g/g) and SY3 (0.031 $\mu$g/g) than CON diet (0.008 $\mu$g/g) (p<0.05). Selenium content of kidney was increased in SY2 I and SY3 compared to pigs fed CON and SY1 (p<0.05). Selenium content of liver was higher in SY1 than CON (p<0.05). In conclusion, it is suggested that selenium content could be accumulated in M. longissimus dorsi, kidney and liver by selenium binding yeast peptide supplementation, and meat color of M. longissimus dorsi could be affected by selenium binding yeast peptide supplementation.
Journal of the Korean Society of Food Science and Nutrition
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v.22
no.4
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pp.381-391
/
1993
To evaluate the antioxidizing effect of flavonoid on fish oil and peroxidized fish oil, rats were fed with diets containing 5% corn oil (CO), 5% corn oil and 15% fresh fish oil (FO) or peroxidixed fish oil (PFO) for 4weeks. An half of FO and PFO group rats were injected with 10mg flavonoid (+)-catechin (a day per kg body weight) (FO-C and PFO-C). FO and FO-C group rats showed higher increase in body weight as compared to PFO, PFO-C group rats. Whereas, the opposite result was obtained in case of liver weight increase. In addition, catechin apparently reduced liver weight by 12~17%. Phospholipid, cholesterol, triglyceride and lipid peroxide content in serum and cholesterol, lipid peroxide content in liver and adipose tissue of PFO, PFO-C group rats were significantly higher than those of FO, FO-C one. These results suggested that catechin reduced the synthesis of lipid and protected effectively against lipid peroxidation. In fatty acids profile of neutral lipid and phospholipid, the ratio of polyunsaturated fatty acids (PUFA) versus saturated fatty acids (SFA) in PFO, PFO-C were lower than that of FO or FO-C because of ruduced PUFA. Contrary to our expectation, the enzyme activities of superoxide dismutase(SOD), catalase and glutathione peroxidase (GSH-Px) in rat liver of FO and FO-C group were lower than those of PFO and PFO-C group. These results were quite interesting and might be explained in terms of homeostasis. In case of total lipid in liver, $C_{20:5}$, $C_{22:6}$ fatty acids were decreased in rat fed peroxidized fish oil. In conclusion, catechin was considered to be an antioxidative and hepatoprotective drug and hypolipidemic agent.
The current study was performed to develop natural bio-active substances as additives for the production of high quality broiler chickens. A total of 120 male 3 day-old broiler chicks were randomly allocated to CON (control), GK2.5 (ginkgo leaf 2.5%), GK5.0 (ginkgo leaf 5.0%), PK2.5 (pumpkin 2.5%) and PK5.0 (pumpkin 5.0%) of five groups in cages (24 birds per group). All birds were fed corresponding diets from 3 to 35 d of age and determined growth performance and biological parameters including blood biochemical profiles, antioxidant status and intestinal microflora. During the entire feeding trial, GK5.0 and PK5.0 groups resulted in a significantly (P<0.05) higher FCR than GK2.5 and PK2.5 groups. Plasma triglyceride significantly (P<0.05) increased in GK5.0 group compared with the other groups, and the level of alanine transaminase (ALT) increased (P<0.05) in GK5.0 and PK5.0 groups compared with that in PK2.5 group. Dietary addition of ginkgo leaf and pumpkin significantly (P<0.05) increased superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in the small intestine. Also, the addition of 2.5% ginkgo leaf significantly (P<0.05) increased the activities of SOD, GSH-Px and glutathione-S-transferase (GST) in the liver. Futhermore, muscle GST activity significantly (P<0.05) enhanced by dietary addition of ginko leaf and pumpkin. However, the level of lipid peroxidation (MDA) in the small intestine and muscle turned to be higher (P<0.05) in PK5.0 group. The colony forming units (CFU) of E. coli in intestinal digesta significantly (P<0.05) decreased in both ginko leaf and pumpkin supplemented groups compared with CON group. In conclusion, dietary addition of 2.5% ginko leaf and pumpkin as dietary sources can be applicable for the production of high quality broiler chickens.
Chronic alcoholism is considered a common cause of malnutrition. Especially, micronutrient deficiency may playa critical role in the incidence of alcoholic liver diseases. This study was conducted to investigate the effect of folate deficiency and ethanol consumption on cholesterol metabolism and the antioxidative system in rats. Plasma concentration of total cholesterol was increased by ethanol administration in folate-fed rats. HDL-cholesterol tended to be higher in the folate-fed group, but it was not significant. The plasma and hepatic levels of malondialdehyde were increased after chronic ethanol feeding, but dietary folate depressed the plasma malondialdehyde content of rats. Ethanol or folate feeding did not significantly change alcohol dehydrogenase activity. But folate feeding increased catalase activity in ethanol-fed rats. There was no significant change in superoxide dismutase activity among the experimental groups. Glutathione peroxidase activity tended to decrease by chronic ethanol feeding, but dietary folate did not affectthe glutathione peroxidase activity of chronic ethanol-fed rats. Glutathionine-S-transferase activity was not affected by ethanol feeding or folate deficiency. The plasma and hepatic levels of retinol decreased after chronic ethanol feeding. The hepatic level of retinol significantly decreased in ethanol-fed rats by folate deficiency. The plasma level of $\alpha$-tocopherol tended to be low in the folate deficient group with ethanol feeding, but there was no difference among the experimental groups in the hepatic level of $\alpha$-tocopherol. These results demonstrate that chronic ethanol consumption changes the plasma cholesterol metabolism and antioxidative system of rats, and optimal folate feeding in ethanol-fed rats exerts protective effects to some extent.
Journal of the Korean Society of Food Science and Nutrition
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v.42
no.7
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pp.1043-1053
/
2013
We investigated the ability of soybean curd residue (SCR) and its fermented products to inhibit obesity and improve the blood lipid profiles of obese mice fed a high-fat diet. Samples were prepared by fermenting SCR with Aspergillus oryzae var effuses KACC 44990 (ASCR), a microbe used for the fermentation of traditional Korean Meju, and with Monascus pilosus IFO 4480 (MSCR), a microbe used for the production of red rice. In addition, AMSCR, a mixture composed of equal amounts of ASCR and MSCR, was also prepared. Male mice were divided into six groups and fed with either a normal diet, a high-fat diet, or a high-fat diet supplemented with SCR, ASCR, MSCR, or AMSCR. After 8 weeks, body weight gain, serum and hepatic lipid profiles, and the activities of enzymes that generate or scavenge reactive oxygen species (ROS) were evaluated. Compared with the high-fat diet group, all the test groups showed a significant reduction in body, organ, and epididymal fat weight gain. These effects were observed with supplements in the order AMSCR>ASCR>MSCR>SCR. Similarly, supplements of test samples reduced high levels of serum and hepatic triglycerides (TG), total cholesterol, and low-density lipoprotein (LDL) cholesterol caused by hight-fat diet, while high-density lipoprotein (HDL) cholesterol was increased. Interestingly, the ability of ASCR to lower serum TG was stronger than that of MSCR, while MSCR showed a stronger hypocholesterolemic effect than ASCR. Meanwhile, AMSCR returned comprehensively serum lipid levels to normal. In addition, hepatic damage was prevented with effects in the order AMSCR>ASCR>MSCR>SCR. Hepatic ROS generating system including xanthine oxidase (XO) and ROS scavenging system including superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione S-transferase (GST) were recovered to normal level by all test diets. In conclusion, this study suggests that SCR and its fermented products can inhibit obesity and improve lipid profiles.
Journal of the Korean Society of Food Science and Nutrition
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v.42
no.4
/
pp.570-576
/
2013
The purpose of this study was to investigate the effect of turmeric on antioxidative systems and oxidative damage in rats fed a high fat and cholesterol diet. A total 40 rats were divided into four experimental groups: a normal diet group (N), a high fat and cholesterol diet group (HF), a high fat and cholesterol diet group supplemented with 2.5% turmeric powder (TPA group) and a high fat and cholesterol diet group supplemented with 5% turmeric powder (TPB group). The serum glutamate oxaloacetate transaminase (GOT) and glutamate pyruvate transaminase (GPT) activity of the turmeric supplemented groups were decreased compared to the HF group. The GPT activity of the TPB group was especially and significantly decreased compared to the HF group. Hepatic superoxide dismutase (SOD) of the TPB group was significantly increased compared to the HF group. However, there were no significant differences in the activities of hepatic glutathione peroxidase (GSHpx) and catalase (CAT) among all experimental groups. Hepatic glutathione S-transferase (GST) activity in the TPA and TPB groups were increased compared to the HF group. Hepatic superoxide radical content in mitochondria of the 5% turmeric supplemented group was significantly decreased compared to the HF group. Hepatic hydrogen peroxide content in the cytosol and mitochondria of the turmeric-supplemented groups were decreased compared to the HF group. Hepatic carbonyl values in the mitochondria of the turmeric supplemented groups were significantly decreased compared to the HF group. Thiobarbituric acid reaction substance (TBARS) values in the liver were significantly reduced in turmeric supplemented groups compared to the HF group. These result suggest that turmeric powder may reduce oxidative damage through the activation of antioxidative defense systems in rats fed high fat and cholesterol diets.
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