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논문 기본 정보

자료유형
학술저널
저자정보
Vo Dang Khoa (가천대학교) Nguyen Thi-Thao-Linh (College of Pharmacy Gachon University) 맹한주 (가천대학교)
저널정보
한국약제학회 Journal of Pharmaceutical Investigation Journal of Pharmaceutical Investigation 제52권 제3호
발행연도
2022.5
수록면
341 - 351 (11page)
DOI
10.1007/s40005-022-00563-1

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Purpose This study aimed to investigate the effects of 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) on the expression levels of organic cation/carnitine transporter 1 (OCTN1) as well as the pharmacokinetics and biodistribution of ergothioneine, an OCTN1 substrate, in rats. Methods Rats pretreated with 1,25(OH)2D3 (2.56 nmol/kg/day) for four days were administered ergothioneine (2 mg/kg) intravenously. The expression levels of rat OCTN1 (rOCTN1) in organs were determined using real-time quantitative polymerase chain reaction. Ergothioneine levels in plasma, urine, and organs (with and without intravenous injection of exogenous ergothioneine) were determined using liquid chromatography-tandem mass spectrometry. Results 1,25(OH)2D3 pretreatment resulted in a significant decrease in rOCTN1 mRNA expression levels in the kidney and brain, a significant increase in basal plasma levels of ergothioneine (from 48 h), and a significant decrease in the tissueplasma partition coefficient (Kp) in all tissues (except the heart and lungs) and the basal urine levels of ergothioneine. After intravenous administration, the pharmacokinetic profiles of ergothioneine were consistent with the basal levels of endogenous ergothioneine, with an increase in AUC ∞ by 85%, a significant decrease in total clearance by 49%, and a decrease in Vss by 32% in 1,25(OH)2D3-treated rats. The Kp value and urinary recovery of ergothioneine also decreased in the 1,25(OH)2D3- treated group. Conclusion This study showed the effects of 1,25(OH)2D3 on the expression and function of rOCTN1 by investigating the interaction between 1,25(OH)2D3 and ergothioneine. Dose adjustment and possible changes in bioavailability should be considered before the co-administration of vitamin D or its active forms and OCTN1 substrates.

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