• Journal of Life Science
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• v.28 no.1
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• pp.83-89
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• 2018

This study was attempted to investigate the effects of Duchesnea chrysantha (DC) on antioxidative activities by in vivo. Rats were divided into four experimental groups which are composed of normal diet group (N group), high fat high cholesterol diet group (HF group), high fat high cholesterol diet with 5% DC powder supplemented group (DA group) and high fat high cholesterol diet with 10% DC powder supplemented group (DB group). Supplementation of DC powder groups resulted in increased activities of hepatic glutathione peroxidase and catalase. The microsomal superoxide radical contents of the DA and DB groups were significantly reduced compared to the high fat high cholesterol diet group. The mitochondrial superoxide radical contents of the DB group were significantly reduced compared to the high fat high cholesterol diet group. Hepatic hydrogen peroxide contents in cytosol were significantly reduced 5% and 10% DC powder supplemented group. The carbonyl values contents in mitochondria and microsome of the DA and DB groups were significantly reduced compared to the HF group. Thiobarbituric acid reaction substance (TBARS) values in liver were reduced in 10% DC powder supplemented group compared to the HF group. These results suggest that DC powder may have a strong regulatory effect in the activation of the antioxidative defense system.

• Journal of Nutrition and Health
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• v.36 no.4
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• pp.352-358
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• 2003

This study was performed to investigate the effects of liquid culture of Agaricus blazei on the lipid metabolism and enzyme activities in growing male rats. Sprague-Dawley rats were given four different types of diets for a succeeding period of 5 weeks, respectively: a normal diet group (7% corn oil), a high fat diet group (7% com oil + 15% lard), a 20 or 30% Agaricus diet groups (high fat diet + 20 or 30% Agaricus in water) according to the levels of Agaricus supplementation. The body weight gains, food intake, food efficiency ratios, and hepatic, kidney, spleen and pancreas weights of the rats fed 20 or 30% Agaricus diets were similar to those of the rats fed high fat diet. The epididymal fat pad weight of the rats fed high fat diet and 20 or 30% Agaricus diets were significantly higher than that of the rats fed normal diet. The concentrations of serum triglyceride, total cholesterol, LDL-cholesterol and HDL-cholesterol, and the activity of glutamic pyruvic transaminase in the rats fed 30% Agaricus diet were significantly lower than those in the rats 114 high fat diet. But the concentrations of hepatic total cholesterol and triglyceride of rats fed the 20 or 30% Agaricus diets were similar to those of rats fed the high fat diet. The HDL-oholesterol/total-cholesterol ratio of the rat fed 30% Agaricus diet was significantly higher than that of the rats fed high fat diet, The activity of glutamic oxaloacetic transaminase in the rats fed 20 or 30% Agaricus diets were similar to those in the rats fed high fat diet. There were no differences in the concentrations of total protein, hemoglobin and glucose, and the activities of alkaline phosphatase, and the atherogenic index in the serum among the experimental groups. These results showed that the 30% Agaricus diet feeding decreased the total cholesterol, the triglyceride and the LDL-cholesterol, and increased the HDL-oholesterol/total cholesterol ratio in serum of rats.

• Journal of Physiology & Pathology in Korean Medicine
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• v.28 no.4
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• pp.371-378
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• 2014

This study was designed to investigate the antihyperlipidemic activity of aqueous extracts of Kyeongokgo (KOG), Kyeongokgo Dansambang (KDB), and Kyeongokgo Gamibang (KGB) on the hyperlipidemic rats induced by high-fat diet. The animals were divided into 4 groups of the hyperlipidemic control group, the KOG-fed group, the KDB-fed group and the KGB-fed group, and received oral administration of each prescription with diet for a period of six weeks. The changes in the body weight, the amount of food intake, the liver weight, the epididymal fat weight, and the plasma levels of total cholesterol, triglyceride, HDL-cholesterol and LDL-cholesterol were measured. In all experimental groups, the weight of liver and epididymal fat decreased significantly. There was a significant decrease in the amount of food intake, the weight of liver and epididymal fat, the plasma level of total cholesterol, and HDL-cholesterol in the KDB-fed and the KGB-fed groups. In addition, KGB-fed group represented a significant decrease in the triglyceride. These results suggest that the aqueous extracts of Kyeongokgo Dansambang and Kyeongokgo Gamibang have a good antihyperlipidemic activity and a potential to treat hyperlipidemia.

• Journal of Physiology & Pathology in Korean Medicine
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• v.24 no.1
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• pp.67-73
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• 2010

The purpose of this study was to investigate the effects of Crataegii Fructus on the diet-induced hyperlipidemia in rats. Rats were divided into 4 groups, normal group(supplied enough water and feeds only), high fat diet administered group(supplied high fat diet for 4 weeks, Control group) and Crataegii Fructus administered group(supplied high fat diet and Crataegii Fructus lyophilization extract for 4 weeks, 397.3 mg/kg(rat) in sample A, 662.5 mg/kg(rat) in sample B). Body weight, liver weight and serum lipid levels were evaluated. The water extract of Crataegii Fructus decreased liver weight and triglyceride in high fat diet induced hyperlipidemia in rats, and increased HDL-cholesterol.

• Nutritional Sciences
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• v.3 no.1
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• pp.11-17
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• 2000

This study was intended to examine whether dehydroepiandrosterone (DHEA) and dietary fat level or source could modulate glutathione utilizing detoxifying system activity and the cytosolic NADPH generation in rat liver. Male Sprague-Dawley rats were fed semipurifed diet containing either 2%(w/w) corn oil (low level of corn oil diet: 5 ca% of fat) 15% corn oil (high level of corn oil diet: 31 cal% of fat) or 13% sardine oil plus 2% corn oil(high level of fish oil diet: 31 cal% of fat) for 9 weeks. Half of the rats in each diet group were fed a diet supplemented with 0.2% DHEA (w/w). DHEA administration increased plasma total cholesterol level in low corn oil diet-fed rats. The high fish oil diet significantly decreased plasma total cholesterol level compared to the high corn oil diet. Plasma triglyceride level was not significantly changed by DHEA administration and dietary fat level and source. Fasting plasma glucose level was increased by DHEA administration and fish oil diet. Glucose 6-phosphate dehydrogenase activity in liver tissue was significantly increased by DHEA administration and high fat diet, especially fish oil diet. Malic enzyme activity in liver tissue was significantly increased by DHEA administration and high fat diet, especially fish oil diet. Malic enzyme activity in liver tissue was significantly increased by DHEA administration. DHEA suppressed the glutathione peroxidase, glutathione-dependent enzymes compared to the low corn oil diet, while fish oil diet elevated the activity of glutathione peroxidase and glutathione reductase compared to corn oil diet. These results suggest that DHEA administration and high level of corn oil diet may suppress the cellular detoxifying system activity through reduction of glutathione utilization, while the fish oil diet did not show these effects.

• Journal of Nutrition and Health
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• v.34 no.2
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• pp.123-131
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• 2001

The purpose of this study was to investigate the effects of diet composition on serum leptin and lipids profiles in rats. At the baseline, seven 4-week-old Sprague-Dawley rats, male, were sacrificed and the remaining rats were divided into five groups and each group was fed one of the following five dietary regiments for 2 weeks and 6 weeks;the control diet AIN76(CAL, n=2l), high-carbonhydrate(rice)(HCR, n=2l), high-carbohydrate(flour)(HCF, n=2l), high-fat(corn oil)(HFO, n=2l), high-fat(beef tallow)(HFB, n=2l). Serum leptin was determined by a double antibody ELISA assay at the baseline(n=7), 6 week(n=35) and 10 week of age(n=70). At 6 weeks of age, the increase in the Food Efficiency Ratio(FER) was related to adipocyte hyperplasia in rats on HFB diets. The serum triglyceride, total cholesterol, and LDL-cholesterol increased significantly in HFB group, and decreased in HFO group compared to control group. The HFC group showed significant increase in serum triglyceride level compared with control group. After 2 weeks and 6 weeks, noticeably high increases in epididymal adipose tissue fat cell mass and numbers were observed with the HFB fed group. Serum leptin levels increased as body weight increased over the period of time(4weeks; 1.50$\pm$0.13ng/ml versus 10weeks; 2.08$\pm$-.13ng/ml). And this result shows that there are 193% higher in rats fed high fat-beef tallow diet than the control diet. Serum leptin levels of the HFB group(4.01$\pm$0.39mg/ml) were significantly higher than that of the HFO(2.06$\pm$0.5613ng/ml), CAL(2.08$\pm$0.1313ng/ml), HCR(2.41$\pm$0.2113ng/ml) and HCF(2.80$\pm$0.4713ng/ml) at p<0.05. The serum leptin concentration was positively correlated with the amount of epididymal fat pads(r=0.47 p<0.01), serum triglyceride(r=0.49, p<0.001), tatal cholesterol(r=0.48, p<0.001), LDL-cholesterol(r=0.58, p<0.001), atherogenic index(r=0.67, p<0.001), and inversely correlated with HDL-cholesterol(r=-0.65, p<0.001). In conclusion, the changes in composition of dietary fat and carbohydrate intake could affect changes in concentration of serum lipids and leptin. Especially, the high-fat diet with animal fat source could increase circulating leptin level. (Korean J Nutrition 34(2) : 123-131, 2001)

• Biomedical Science Letters
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• v.9 no.4
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• pp.215-222
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• 2003

As the obesity has been known to be related with the hyperlipidemia, cardiovascular disease, cerebral apoplexy, fatty liver, and other chronic diseases, recent researches have focused on the functional food materials and their anti-obesity activities. This study was performed to study the effects of vanilloid family capsaicin, major pungent ingredient of hot chillies and peppers, on anti-obesity activities. ICR male mice were fed one of the pellet diet, basal diet, and high fat diet with capsaicin (45 $\mu\textrm{g}$/day) solution for 5 days. Mice in the corresponding control groups were given water for 5 days. In results, capsaicin reduced body weights in any diet groups. Percent weight and cell size of the abdominal white adipose tissue in mice on the high fat diet with capcaicin were significantly lower compared with those in mice on the high fat diet with water. However, percent brown adipose tissue weight per body weight in mice on the high fat diet was not affected by capsaicin. Capsaicin reduced the levels of s-triglyceride and s-total cholesterol in the pellet diet or high fat diet groups. There was no difference in the s-protein levels between the capsaicin group and the control water group. These data indicate that 1) orally administered capsaicin has a reducing effect on the blood triglyceride and total cholesterol levels, and 2) capsaicin has lowering effects on the body weight, percent weight and cell size of the abdominal white adipose tissue.

• Journal of Nutrition and Health
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• v.35 no.10
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• pp.1015-1022
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• 2002

This study was conducted to examine the effects of dietary xylooligosaccharides on hepatic HMG-CoA reductase activity and morphological exchange of liver in rats fed high fat diet. Sprague-Dawley male rats weighing 100 $\pm$ 10 g were randomly divided into four groups, two normal diets and two high fat diets containing 1% cholesterol and 10% lard. Two normal diets were classified into a basal diet (normal group) and 10% xylooligosaccharide diet (NX group). The high fat diet groups were classified into a HF group without xylooligosaccharides diet and HFX group supplemented 10% xylooligosacchride diet. Experimental diets were fed ad libidum to the rats for 4 weeks and then they were sacrificed. The body weight of high fat diet (HF group) was increased more than that of normal group, but it was significantly decreased by xylooligosacchrides supplementation. The food intake was not significantly different among the all groups. The weight of liver, small intestine and cecum of all xylooligosaccharide supplemented groups were significantly heavier than those of normal and HF groups. The activity of hepatic HMG-CoA reductase, a rate limiting enzyme of cholesterol biosynthesis, in xylooligosaccharide supplemented groups was higher than that of HF group. Light micrographs revealed that the structures of hepatocytes in xylooligosaccharide supplemented groups were preserved well, compared to HF group. The xylooligosaccharide supplementation exerted a lipid-lowering action by decreasing cholesterol and triglycerides contents in hepatic tissue. In conclusion, the activity of hepatic HMG-CoA reductase and damage of liver in rats fed high fat diets were improved by dietary xylooligosaccharides.

• Journal of Physiology & Pathology in Korean Medicine
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• v.17 no.6
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• pp.1412-1418
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• 2003

This experimental study was designed to investigate the effects of Yukgunja-tang(YGJT) on the change of weight and serum total cholesterol, HDL-cholesterol, LDL-cholesterol, triglyceride, free fatty acid, total lipid, phospholipid level in obese mice induced by high fat diet. I fed normal group fed normal diet and administered DDW 0.2㎖ during 7 weeks, control group fed high fat diet and administered DDW 0.2㎖ during 7 weeks, sample A group fed high diet and administered YGJT 300mg/kg 0.2㎖ during 7 weeks, sample B group fed high diet and administered YGJT 500mg/kg 0.2㎖ during 7 weeks. The results were as follows ; 1. Sample A and Sample B were significantly decreased body weight(4weeks) and serum free fatty acid level in comparison with control group. 2. Sample A was significantly decreased body weight(7weeks), serum total cholesterol level and serum total lipid level, but significantly increased serum HDL-cholesterol level in comparison with control group. 3. Sample A was decreased serum LDL-cholesterol level, serum triglyceride level and serum phospholipid level in comparison with control group. 4. Sample B was increased serum HDL-cholesterol level in comparison with control group. 5. Sample B was decreased body weight(7weeks), serum total cholesterol level, serum LDL-cholesterol level, serum triglyceride level, serum total lipid level and serum phospholipid level in comparison with control group. According to above results, I suggest YGJT is able to be used for the herbal medication of obesity.

• Nutrition Research and Practice
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• v.4 no.3
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• pp.191-195
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• 2010

There is an increasing interest in curcumin (Curcuma longa L.) as a cardiovascular disease (CVD) protective agent via decreased blood total cholesterol and low-density lipoprotein-cholesterol (LDL-cholesterol) level. The aim of this study was to investigate further the potential mechanism in the hypocholesterolemic effect of curcumin by measuring cholesterol 7a-hydroxylase (CYP7A1), a rate limiting enzyme in the biosynthesis of bile acid from cholesterol, at the mRNA level. Male Sprague-Dawley rats were fed a 45% high fat diet or same diet supplemented with curcumin (0.1% wt/wt) for 8 weeks. The curcumin diet significantly decreased serum triglyceride (TG) by 27%, total cholesterol (TC) by 33.8%, and LDL-cholesterol by 56%, respectively as compared to control group. The curcumin-supplemented diet also significantly lowered the atherogenic index (AI) by 48% as compared to control group. Hepatic TG level was significantly reduced by 41% in rats fed with curcumin-supplemented diet in comparison with control group (P < 0.05). Conversely, the curcumin diet significantly increased fecal TG and TC. The curcumin diet up-regulated hepatic CYP7A1 mRNA level by 2.16-fold, compared to control group p (P < 0.05). These findings suggested that the increases in the CYP7A1 gene expression may partially account for the hypocholesterolemic effect of curcumin.