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자료유형
학술저널
저자정보
Kim, Hyo-Jung (Department of Toxicology, NationalInstitute of Safety Research) Oh, Mi-Hyune (Department of Toxicology, NationalInstitute of Safety Research) Sunwoo, Yu-Sin (Department of Toxicology, NationalInstitute of Safety Research) Seo, Kyung-Won (Department of Toxicology, NationalInstitute of Safety Research) Park, In-Won (College of Medicine, Hallym University) Moon, Byung-Won (Department of Toxicology, NationalInstitute of Safety Research)
저널정보
한국응용약물학회 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 제3권 제1호
발행연도
1995.1
수록면
85 - 90 (6page)

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Phenol, acetaminophen (AA) and salicylamide are all known to be sulfated in rats and mice. We have previously demonstrated that capacity-limited sulfation of xenobiotics in rats is due to the reduced availability of hepatic 3'-phosphoadenosine 5'-phosphosulfate (PAPS), the cosubstrate for sulfation, which in turn is limited by the availability of its precursor, inorganic sulfate. Because species differences have been reported in the extent of sulfation, this study was conducted to determine whether these xenobiotics lower hepatic PAPS and sulfate in ICR mice. All three substrates decreased serum sulfate concentrations in a dose- and time-dependent manner. However, contrary to the observations in rats, phenol markedly increased hepatic PAPS concentrations in a dose-dependent manner, 1 hr after ip injection of 0∼4 mmol/kg. Following ip injection of 4 mmol/kg phenol, hepatic PAPS concentraions were enhanced 2∼3 fold, 0.5-2 hr after dosing and returned to control values 3 hr after dosing, whereas AA and salicylamide had little effect on hepatic PAPS concentraions. In summary, these studies demonstrate that phenol markedly enhances hepatic PAPS concentrations in mice, whereas hepatic PAPS levels are not affected by AA and salicylamide. Our data suggest that 1) hepatic sulfation for high dosages of xenobiotics in ICR mice is not limited by the availability of cosubstrate and 2) there are significant species differences in the regulation of PAPS between rats and mice.

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