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Effects of Water Extracts of Persimmon Leaves to Cadmium Toxicity in Rats by Inhalation Exposure  

Kang Sung Ho (Department of The Third Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University)
Chun Byung Yeol (Department of Preventive Medicine, College of Medicine, Kyungpook National University)
Kim Sang Duck (Department of The Third Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University)
Song Young Son (Department of The Third Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University)
Lee Ki Nam (Department of The Third Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University)
Jeung Jae Yeal (Department of The Third Medicine, Professional Graduate School of Oriental Medicine, Wonkwang University)
Publication Information
Journal of Physiology & Pathology in Korean Medicine / v.16, no.1, 2002 , pp. 78-88 More about this Journal
Abstract
Experimental animals were divided into 5 groups; normal, cadmium control, and 3 experimental groups. Cadmium control and experimental groups were exposed to 1 mg/㎥ of cadmium aerosol in air by inhalation exposure for 6 hours/day, 5 days/week during 4 weeks. Dosages of 20, 40, and 80mg/kg of extracts of persimmon leaves were intraperitoneally injected to experimental groups respectively and several toxicological parameters and induction of metallothionein were measured from the rats that inhaled cadmium aerosol in air. The results of this study were as follows. Cadmium concentration that cadmium control and experimental groups were inhaled was 0.980±0.061 mg/㎥. Mass median diameter of cadmium aerosol for inhalation exposure was 4.93±0.483㎛. Cadmium content of normal group in lung was 0.088㎍/g and the highest cadmium content in lung, 55.492㎍/g was from 80mg/kg dose group. Cadmium concentration of normal group in blood was 0.348㎍/100㎖ and the highest cadmium concentration in blood, 2.642㎍/100㎖ was from cadmium control. Cadmium concentration of normal group in liver was 0.010㎍/g and the highest cadmium concentration in liver, 31.100㎍/g was from 20mg/kg dose group. Cadmium concentration of normal group in kidney was 0.030㎍/g and the highest cadmium concentration in kidney, 2.526㎍/g was from cadmium control. Cadmium concentration of normal group in intestine was O.064㎍/g and the highest cadmium concentration in intestine, 0.300㎍/g was from 80mg/kg dose group. The highest cadmium concentration in urine by week was 6.080㎍/day from 20mg/kg dose group in the fouth week and the highest cadmium concentration in feces by week was 341.731㎍/day from 20mg/kg dose group in the fouth week. Metallothionein concentration of normal group in lung was 5.769㎍/g and the highest in lung, 30.986㎍/g was from 80mg/kg dose group. Metallothionein concentration of normal group in liver was 38.856㎍/g and the highest in liver, 169.378㎍/g was from 40mg/kg dose group. Metallothionein concentration of normal group in kidney was 22.228㎍/g and the highest in kidney, 47.898㎍/g was from 80mg/kg dose group. Metallothionein concentration of normal group in intestine was 2.170㎍/g and the highest in intestine, 13.642㎍/g was from 80mg dose group.
Keywords
Cadmium; Inhalation Exposure; Metallothionein;
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