• Nutritional Sciences
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• v.8 no.2
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• pp.89-96
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• 2005

To determine the deleterious effects of chronic alcohol consumption on bone especially in adolescents or young adults, 8 week-old Sprague Dawley male rats were fed with Lieber-Decarli ethanol liquid diet, containing $36\%$ of energy as ethanol, ad libitum (ethanol group) or isocaloric normal liquid diet (control group) for 7 weeks. Body weight was significantly lower in ethanol group than that in control group after 1 week of feeding to the end. liver weight and the ratio of liver or kidney weight to body weight in ethanol group were significantly increased when compared to those in control group. Ethanol group showed significantly lower serum protein and albumin levels (p<0.05), higher total cholesterol and HDL-cholesterol levels (p<0.05), and AST, ALT and BUN activities than control group, but serum triglyceride, Ca and phosphate levels were not different. Ethanol group had significantly lower tibial trabecular bone area and serum osteocalcin level than control group (p<0.05), but urinary Ca and NTx (cross-linked N-telopeptide of type I collagen) concentrations and serum testosterone and parathyroid hormone levels were not different. In conclusion, chronic alcohol consumption in growing young male rats may result in osteopenia through the reduction of bone formation as well as liver malfunction.

• Preventive Nutrition and Food Science
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• v.8 no.2
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• pp.119-123
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• 2003

To investigate the effects of the supplementation of carnitine and/or ${\gamma}$ -aminobutric acid (GABA), Sprague-Dawley male rats were orally treated with either an AIN-76 diet (control), a control diet plus ethanol (CE, 4 g ethanol/kg bw), CE plus L-carnitine (CEC, 0.5 g/kg bw), CE plus GABA (CEG, 0.5 g/kg bw), or CE plus L-carnitine plus GABA (CECG, 0.25 g/kg bw each) for 6 weeks. Serum triglyceride levels were increased in the CE group and were decreased significantly in the CEC, CEG and CECG groups. HDL-cholesterol was increased and LDL-cholesterol was decreased in the CEG and CECG groups compared with the CE group. Serum GOT and GPT levels increased by the chronic ethanol administration were decreased in the CEC group. In addition, we have evaluated the mRNA levels of carnitine palmitoyltransferase-I in those groups. Supplementation of carnitine/GABA had some recovery effects on the liver CPT-I mRNA levels which decreased by chronic ethanol administration. These results may suggest that supplementations of either L-carnitine or GABA aye effective on the recovery of chronic ethanol-related symptoms, but no combined effects were shown.

• Journal of Nutrition and Health
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• v.34 no.5
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• pp.525-531
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• 2001

The present study investigated the protective effects of green tea against acute ethanol-induced lipid peroxidation and the change of antioxidative enzyme activities in various regions of rat brain : cortex, cerebellum, striatum and hippocampus. The following parameters were examined : malondialdehyde(MDA) levels and activities of superoxide dismutase(SOD), catalase and glutathione peroxidase(GSH-Px). Male Sprague-Dawley rats were given the experimental containing 1% green tea powder or control diet for 4 weeks, and at the end of feeding diet group received acute ethanol(5g/kg body weight) or equicaloric sucrose solution intragastrically. Green tea powder significantly decreased MDA levels in the striatum compared to control-non alcohol treated group to 1% green tea-non alcohol treated group without altering the antioxidative enzyme activities. Green tea resulted in a significant increase in GSH-Px activities in the hippocampus compared to either control-non alcohol treated group(0.043units/mg protein) or 1% green tea-non alcohol treated group(0.071units/mg protein). In conclusion, these results suggest that moderate consumption of green tea leaves can exert protective effects against ethanol-induced oxidative stress in brain regions, by reducing MDA concentrations in the striatum and enhancing GSH-Px activities in the hippocampus. (Korean J Nutrition 34(5) : 525∼531, 2001)

• Journal of the Korean Society of Food Science and Nutrition
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• v.28 no.1
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• pp.205-211
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• 1999

Effects of Houttuynia cordata ethanol extracts on lipid metabolism and antioxidant enzymes in Sprague Dawley male rats were investigated. High fat used in the diet mixture included 10% of lard, 1% of cholesterol and 0.25% of sodium cholate. Total serum cholesterol contents of the rats fed Houttuynia cordata extracts were decreased compared to the control. On the other hand, HDL cholesterol contents were increased along with the decrease of athrogenic index. When high fat diet was fed, total serum cholesterol contents were significantly increased(p<0.01) with the athrogenic index increase of four times of the control. With the administration of Houttuynia cordata extract HDL cholesterol was increased by 53% in the high fat diet group. Antioxidant enzymes including GST and catalase activities were increased comparing the control. On the otherhand, the extracts lowered phospholipid(p<0.01), GOT, GPT, Cu,Zn SOD and alkaline phosphatase enzyme activities in the serum which are related to the liver functions. Therefore, the above results suggest that Houttuynia cordata ethanol extracts can help to maintain normal liver functions and help to protect from peroxidative damages caused by excess dietary fat intake.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.4
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• pp.538-543
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• 2011

This study was conducted for the antihyperlipidemic effect of ethanol extract from Portulaca oleracea in high fat diet-induced obese mice after having injected the ethanol extract from Portulaca oleracea to the obese mice with high fat diet. The 30 six-week-old male C57BL/6J mice were divided into 3 groups of 10 and fed for 5 weeks to be obese with high fat diet. Thereafter, for 4 weeks, ethanol extract from Portulaca oleracea was provided through oral injection to the 3 groups: control group (HFD), group injected with 75 mg/kg of ethanol extract from Portulaca oleracea (HFD+POE 75) and the group injected with 125 mg/kg of ethanol extract from Portulaca oleracea (HFD+POE 125). The serum and liver lipid and the alanine transaminase (ALT) and aspartate transaminase (AST) activity were measured. The result showed that there was no significant difference in weight gain and feed intake, and the feed efficiency ratio was significantly low in the group provided with ethanol extract from Portulaca oleracea. Serum total cholesterol was significantly low in the group of ethanol extract from Portulaca oleracea (HFD+POE 125). It appeared that all the groups provided with ethanol extract from Portulaca loeracea reduced plasma triglyceride significantly according to the ethanol extract from Portulaca oleracea dose. There was no dose dependency of HDL-cholesterol to the dose of ethanol extract of Portulaca oleracea. LDL-cholesterol was low in the group dosed with high ethanol extract from Portulaca oleracea (HFD+POE 125). There was difference of total cholesterol, triglyceride and total lipid contents in liver. AI (atherogenic index) and CRF (cardiac risk factor) were significantly low in the group with high dose of ethanol extract from Portulaca oleracea (HFD+POE 125). There was no difference of serum AST activity, however, serum ALT activity was significantly low in the group with high dose of ethanol extract from Portulaca oleracea (HFD+POE 125).

• Journal of Nutrition and Health
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• v.33 no.2
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• pp.124-133
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• 2000

This study evaluated the effects of chronic ethanol consumption and/or taurine supplementation on hepatic total, phospholipid fatty acid composition and the metabolism of rats fed one of three purified liquid diets for 8 weeks. the rats followed either the control diet (CD, ethanol-free and taurine-free diet); ethanol diet (ED, CD+ 50g ethanol/L) or ethanol-taurine diet (ETD, ED+3.75g taurne/L). Chronic ethanol consumption and/or dietary taurine supplementation were associated with altered hepatic total and phospholipid fatty acid composition. compared to the values for the control rats, ED or ETD significantly decreased the percentage of total monounsaturated fatty acids ($\Sigma$MUFA), and increased the percentage of total polyunsaturated fatty acids ($\Sigma$PUFA) of hepatic total lipids(p〈0.01). Percentages of 14:0(P〈0.01) and 16:0(p〈0.001) were sigificantly lower, and those of 18:0(p〈0.01), 20:0(p〈0.001), 20:3$\omega$6(p〈0.01) and 22:4$\omega$6(p〈0.01) in hepatic total fatty acid compositions were oserved in rats fed ETD versus those fed ED or ETD. No significant differences in hepatic total fatty acid compositions were observed in rats fed ETD versus those fed ED. Percentages of 24:0(p〈0.01), 16:1(p〈0.05), 20:1(p〈0.01), 18:2$\omega$6(p〈0.01) and 18:3$\omega$3(p〈0.05) in hepati phospholipids were significantly higher, and those of 14:0(p〈0.01), 16:0(p〈0.001), 20:3$\omega$3(p〈0.05) in hepatic phospholipids were significantly higher, and those of 14:0(p〈0.01), 16:0(p〈0.001), 20:3$\omega$3(p〈0.001), 22:6$\omega$3(p〈0.001) and $\Sigma$$\omega$3(P〈0.001) were significantly lower in rats fed ED or ETD compared to the values for the control rats. The Δ5 desaturation index(20:3$\omega$6⇒20:4$\omega$6) and elongation index (20:5$\omega$3⇒22:5$\omega$3) of hepatic phospholipid index (20:3$\omega$6⇒20:4$\omega$6) and decreased Δ4 desaturation index (22:5$\omega$3⇒22:6$\omega$3) compared to the values for the ED rats. These changes in hepatic fatty acid composition induced by chronic ethanol consumption and/or taurine supplementation might be associated with the modulations of physical properties of the hepatic cell membrane and its sensitivity to peroxidation damage.

• Archives of Pharmacal Research
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• v.29 no.3
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• pp.256-264
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• 2006

Salicornia herbacea L. (Chenopodiaceae) has been used as a seasoned vegetable by living in coastal areas. S. herbacea (SH) has been demonstrated to stimulate cytokine production, nitric oxide release, and to show anti-oxidative effect. In a series of investigations to develop potential anti-diabetic and/or anti-hyperlipidemic agents from Korean indigenous plants, 50% ethanol extract of Salicornia herbacea was found to prevent the onset of the hyperglycemia and hyperlipidemia induced by high fat diet in ICR mice. At 6 week old, the ICR mice were randomly divided into five groups; two control and three treatment groups. The control mice were to receive either a regular diet (RD) or high-fat diet (HFD), and the treatment groups were fed a high fat diet with either 350 mg/kg, 700 mg/kg of SH (SH350 and SH700) or 250 mg/kg of met-formin (MT250) for a 10-week period. SH not only reduced body weight but also corrected associated hyperglycemia and hyperlipidemia in a dose dependent manner. SH exerted beneficial effects on the plasma glucose and lipid homeostasis possibly ascribed to its specific effects on lipogenesis related genes (SREBP1a, FAS, GAPT), and PEPCK, glucose 6-phosphatase gene expressions in liver. Ethanol extract of S. herbacea has potential as a preventive agent for type 2 diabetes (and possibly hyperlipidemia) and deserves future clinical trial.

• Preventive Nutrition and Food Science
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• v.16 no.2
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• pp.95-103
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• 2011

This study was performed to investigate the antioxidant mechanism of tomato wine with varying lycopene content in rats fed a high fat diet (HFD). Male Sprague-Dawley rats were randomly divided into five groups (n=10 per group) and fed an HFD (35% of total energy from fat) plus ethanol (7.2% of total energy from alcohol), tomato wine with varying lycopene content (0.425 mg%, 1.140 mg% or 2.045 mg% lycopene) or an isocaloric control diet for 6 weeks. Mice fed HFD plus ethanol significantly increased erythrocyte hydrogen peroxide and thiobarbituric acid reactive substances (TBARS) levels with increases in activities of erythrocyte antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and glutathione reductase (GR) compared to pair-fed rats. Supplementation of tomato wine with varying lycopene content decreased ethanol-mediated increases of erythrocyte lipid peroxidation and antioxidant enzyme activities in HFD-fed rats, and tomato wine with higher lycopene appeared to be more effective. Tomato wine also dose-dependently lowered TBARS levels with decreased pro-oxidant enzyme, xanthine oxidase (XOD) activity in plasma of HFD-fed rats. In contrast to erythrocytes, the inhibitory effects of tomato wine on hepatic lipid peroxidation were linked to increased hepatic antioxidant enzymes (SOD and CAT) and alcohol metabolizing enzyme (alcohol dehydrogenase and aldehyde dehydrogenase) activities. There were no significant differences in hepatic XOD and cytochrome P450-2E1 activities among the groups. Together, our data suggest that tomato wine fortified with lycopene has the potential to protect against ethanol-induced oxidative stress via regulation of antioxidant or pro-oxidant enzymes and alcohol metabolizing enzyme activities in plasma, erythrocyte and liver.

• Korean Journal of Medicinal Crop Science
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• v.19 no.5
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• pp.319-324
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• 2011

This study was carried out to investigate the effect of Lythrum salicaria L. ethanol extract on anti-obesity effects in rat fed a high fat diet for 8 weeks to induce obese rat model. Male SD rats were divided into normal group, control (high fat diet) group, positive control (Garcinia Cambogia extracts) group, high fat group supplemented with ethanol extracts of Lythrum salicaria L. (EELS). The body weight gain and control (high fat diet) were increased by a high fat diet, but decreased in the EELS. At the end of the experiment, the body weight in high fat diet groups was higher than that of normal diet group, while the body weights of EELS and positive control group were significantly reduced by 16.62%, as compared with that of high fat diet group (p < 0.05). The levels of serum triglyceride, total cholesterol in EELS group were significantly decreased as compared with high fat diet group (p < 0.05). The liver and mesenteric adipose tissue weights of control (high fat diet) increase than that for normal group, whereas EELS and positive control group were significantly decreased (p < 0.05). Levels of triglyceride in liver were significantly lower in EELS group than those in high fat diet group (p < 0.05). These results indicate that Lythrum salicaria L. extract may improve lipid metabolism and reduce fat accumulation and body weight.

• Journal of Nutrition and Health
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• v.20 no.6
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• pp.432-441
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• 1987

This study was undertaken to investigate effects of alcohol and fat content in a balanced diet on growth, hepatic function and some biochemical indices of blood in growing rats. Fourty eight male rats of Sprague-Dawley strain weighing about 160g were divided into 4 groups ; high fat diet group, alcohol-adminstered high fat diet group, low fat diet group and alcohol-administered low fat diet group. High and low fat diet supplied 30% and 12%, respectively, of total calorie intake from fat and alcohol-treated groups received water containing 10% ethanol. Diets contained adequate amounts of all nutrients required for rats, including lipotropic agents(choline and methionine) to minimize effects of factors other than alcohol on liver function. Growth rate was lowest in alcohol-administered low-fat diet group, despite that their energy intake was equivalent to the others. For a 3-week study period, 21.86% and 23.61% of total calorie intake were derived from alcohol in alcohol-adminitered high fat diet group and low fat diet group, respectively. There was no influenced on vitamin B$_1$ status by alcohol consumption. Concentration of triglyceride in plasma increased with alcohol comsumption, and the effect was greater after 6 weeks than after 3 weeks of alcohol consumption . Difference of dietary fat content did not affect the level of triglyceride . The levels of total cholesterol and HDL-cholesterol in plasma were not influenced by alcohol consumption. Serum glutamate pyruvate transaminase activity and hepatic mitochondrial respiration rate did not differ between groups. The results indicate that neither moderate alcohol drinking for 6 weeks nor fat content with a balanced diet caused any dramatic change of metabolism and liver function in rats. However they suggest that even moderate alcohol consumption can affect growth of animals dramatically and the effect may be lessened with relatively high fat content in diet.