• Journal of Life Science
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• v.13 no.4
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• pp.457-462
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• 2003

Houttuynia Cordata thunb has been used as folk medicine for analgesics, beriberi, edema, hepatitis and icterus etc. We investigated, the effects of Houttuynia Cordata thunb administration on protective in liver of 2,3,7,8-tetrachlorodibenzo-p-dioxin(TCDD) treated rats. Seven days after the injection of TCDD(1${\mu}g$/kg), Houttuynia Cordata thunb (200mg/kg) was administered into rats intraperitoneally for four weeks. We examined the antioxidative enzymatic activity by measuring the level of GOT, GPT in serum and MDA, GSH, GSSG, GPx, SOD and Catalase in liver tissue of rats. GOT activity of Houttuynia Cordata thunb and TCDD administered group(HTT) showed 49.00% of inhibitive effect compared to TCDD-treated abnormal group(TTA). GPT level of HTT group was decreased to the level of Non TCDD-treated group(NTT). MDA content in the TTA group was 1.27 times increased compared to NTT group. HTT group was inhibited by 69.53% compared to TTA group. GSH contents in HTT group was 1.91 times increased compared to TTA group. GSSG contents in HTT group was 46.72% decreased compared to TTA group. SOD and Catalase in TTA group were lower than in NTT group, but SOD and Catalase in HTT group were increased by 82% and 55.45% respectively compared to TTA group.

• Journal of the Korean Society of Food Science and Nutrition
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• v.34 no.8
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• pp.1157-1163
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• 2005

The current study examined the effects of radish loaves powder on hepatic antioxidative system in rats fed high-cholesterol diet. Sprague-Dawley male rats weighing 100$\pm$10 g were randomly assigned to normal group (N group), normal diet with 5$\%$ radish leaves powder supplemented group (NR group) and high-cholesterol groups, which were sub-divided into radish leaves powder free diet group (HC group) and 2.5$\%$ (HRL group), 5$\%$ (HRM group), 10$\%$ (HRH group) radish leaves powder supplemented groups. Hepatic super oxide dimutase activity was no significant differences. Hepatic glutathione peroxidase activity was sig-nificantly increased in 5$\%$, 10$\%$ radish leaves powder supplemented groups. Hepatic hydrogen peroxide contents in cytosol were no significantly differences Hepatic hydrogen peroxide contents in mitochondria were sig-nificantly reduced in radish leaves powder supplemented groups. Hepatic superoxide radical contents in mi-crosome were significantly reduced in radish leaves powder supplemented groups. Hepatic superoxide radical contents in mitochondria were significantly reduced in 5$\%$, 10$\%$ radish leaves powder supplemented groups. Hepatic TBARS values were significantly reduced in 5$\%$, 10$\%$ radish leaves powder supplemented groups. Hepatic lipofuscin contents were no significant difference in high-cholesterol groups. Hepatic carbonyl values were significantly reduced in 5$\%$, 10$\%$ radish leaves powder supplemented groups among high-cholesterol groups. The results indicate that radish leaves may reduce oxidative damage by activating antioxidative de-fense system of liver in rats fed high-cholesterol diets.

• Journal of the Korean Geographical Society
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• v.36 no.4
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• pp.474-482
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• 2001

The purpose of this study is to investigate the formation and development processes of beach resort by fabric construction in a island environment. The results are as follows. (1) The research area(Tong-ri beach, Bokil-myon, Chollanam-do)has been transformed to belch by sedimentary environmental change since latter half of 1800's. (2) The mean slope of beach face is 0.96°, and the difference of attitude between beach and mud flat face is 75cm. (3) The mean particle size of beach surface sediment is 3.53$\Phi$. This value is very finer than that of any other beach in Korea peninsula. But its value is coarser than that of mud flat surface sediment. (4) The particle size distribution of core sediment is become changed to fine particle in 70cm depth. This value is corresponded to difference of altitude between beach face and mud flat face. (5) The analysis of aerial photographs after 1970 indicates that sedimentation process was not brisked since 1970's. Consequently, the research ares has been developed by sedimentary environmental change for sea-level rise effect and wave height energy rise effect.

• Journal of Life Science
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• v.16 no.6
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• pp.984-988
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• 2006

Lipopolysaccharide(LPS) was posttreated after the 14 day-pretreatment of Ulva lactuca fractions(ULF), and their correlativity to enzymatic activity alteration was investigated in the liver of rats. ULF was intraperitoneally administered into rats at dose of $1m{\ell}/kg$ of 100 mg/kg concentration for 14 days. On the day 15, $1m{\ell}/kg$ of LPS was injected. The corelativity was examined by measuring the changed values of superoxide dismutase(SOD) in mitochondrial fraction and catalase(CAT), glutathione peroxidase(GPx) in liver homogenate. The results showed that LPS treatment decreased the high values of SOD, CAT, GPx to the low values, but ULF pretreatment increased the low values of SOD, CAT, GPx to the high values. It was suggested that ULF, LPS and antioxidative enzymes like SOD, CAT, GPx had the corelativity of the high-low-high pattern and that the ULF pretreatment played the proper preventive role in the protection against the LPS treatment-induced enzymatic inactivity in the water fraction.