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자료유형
학술저널
저자정보
Ko, Jeong-Hyeon (Department of Pharmacology and Medicinal Toxicology Research Center, Center for Advanced Medical Education, Inha University College of Medicine by BK-21 Project) Lee, Tong-Joo (Department of Orthopedic Surgery, Inha University Hospital) Park, Chang-Shin (Department of Pharmacology and Medicinal Toxicology Research Center, Center for Advanced Medical Education, Inha University College of Medicine by BK-21 Project) Jang, Eun-Hee (Department of Pharmacology and Medicinal Toxicology Research Center, Center for Advanced Medical Education, Inha University College of Medicine by BK-21 Project) Oh, Yun-Mi (Department of Pharmacology and Medicinal Toxicology Research Center, Center for Advanced Medical Education, Inha University College of Medicine by BK-21 Project) Kang, Ju-Hee (Department of Pharmacology and Medicinal Toxicology Research Center, Center for Advanced Medical Education, Inha University College of Medicine by BK-21 Project)
저널정보
대한독성유전단백체학회 Molecular & cellular toxicology Molecular & cellular toxicology 제4권 제1호
발행연도
2008.1
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5 - 10 (6page)

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The effect of obesity on the drug-metabolizing enzymes remains an important issue for clinician since obesity is a world wide epidemic problem. However, little is known about the effects of obesity on flavincontaining monooxygenase (FMO) production and activity. We show here for the first time that in vivo FMO activity determined by urinary ranitidine (RA) metabolites ratio in human, was higher in subjects with a high body mass index (BMI, kg/$m^2$, 21.97-30.32) than in those with an intermediate BMI (range 19.38-21.83). Moreover, there was a significant correlation between FMO activity and BMI in 209 subjects. In high fat diet-induced obese mice, we also observed that the hepatic expression of FMO (225% of lean mice) and the activity measured by the RA Noxidation rate ($513{\pm}58.1$ vs. $349{\pm}66.0$ pmol/hr per mg protein) were significantly higher than in lean mice fed a control diet. Unknown factors rather than leptin or insulin appeared to regulate the hepatic FMO production. Thus, FMO activity may be increased in obese or overweight individuals. Moreover, the regulation of FMO activity in subjects with morbid obesity, with or without complications and its clinical implications, should be investigated further.

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