Exposure Characteristics of the Analogous β-Carboline Alkaloids Harmaline and Harmine Based on the Efflux Transporter of Multidrug Resistance Protein 2

doi:10.3389/fphar.2017.00541

	Exposure Characteristics of the Analogous β-Carboline Alkaloids Harmaline and Harmine Based on the Efflux Transporter of Multidrug Resistance Protein 2
	Li, Shuping 2; Zhang, Yunpeng 2; Deng, Gang 2; Wang, Yuwen 2; Qi, Shenglan 2; Cheng, Xuemei 2; Ma, Yueming 3; Xie, Yan 1; Wang, Changhong 2
刊名	Frontiers in pharmacology
	2017
卷号	8 页码:541
ISSN号	1663-9812
DOI	10.3389/fphar.2017.00541
文献子类	Article
英文摘要	Harmaline and harmine occur naturally in plants and are distributed endogenously in human and animal tissues. The two β-carboline alkaloids possess potential for treating Alzheimer's disease, Parkinson's disease, depression and other central nervous system diseases. However, studies have showed that the two compounds have similar structures but with quite different bioavailability. The aim of this study was to elucidate the exposure difference and characterize the transport, metabolism, and pharmacokinetic properties of harmaline and harmine. The results showed that the harmaline and harmine transport across the Caco-2 and MDCK cell monolayers was varied as the time, concentration, pH and temperature changed. The absorption of harmaline and harmine was significantly decreased when ES (OATPs inhibitor), TEA (OCTs/OCTNs substrate), NaN (adenosine triphosphate inhibitor), or sodium vanadate (ATPase Na/K-dependent inhibitor) was added. However, when given MK571 and probenecid (the typical MRP2 inhibitor), the of harmine was increased (1.62- and 1.27-folds), and the efflux ratio was decreased from 1.59 to 0.98 and from 1.59 to 1.19, respectively. In addition, the uptake ratio of harmine at 1 μM was >2.65 in the membrane vesicles expressing human MRP2. Furthermore, harmine could slightly up-regulate the expression of MRP2, which implying harmine might be the substrate of MRP2. Particularly, the -value for harmine was ~1.49-folds greater than that of harmaline in human liver microsomes. It was worth noting that the -value of harmine was increased 1.96-folds after harmine co-administration with probenecid. To summarize, comprehensive analysis indicated that harmaline and harmine were absorbed by transcellular passive diffusion and a pH- and Na-dependent mechanism might be mediated by OATPs and OCTs/OCTNs. MRP2 but MDR1 or BCRP might be involved in the transport of harmine. Furthermore, harmine was more unstable and easily metabolized than harmaline. All these findings suggested that harmine not only appears be an MRP2 substrate, but also possesses weak metabolic stability, and eventually leads to a low oral bioavailability. Taken together, the elucidated absorption, transport, metabolism as well as pharmacokinetic characteristics of harmaline and harmine provide useful information for designing delivery systems, pharmacological applications and avoiding drug-drug interactions.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.183/handle/2S10ELR8/266519]
专题	中国科学院上海药物研究所
作者单位	1.Research Center for Health and Nutrition, Shanghai University of Traditional Chinese MedicineShanghai, China 2.The MOE Key Laboratory for Standardization of Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese MedicineShanghai, China; 3.Laboratory of Pharmacokinetics, Shanghai University of Traditional Chinese MedicineShanghai, China;
推荐引用方式 GB/T 7714	Li, Shuping,Zhang, Yunpeng,Deng, Gang,et al. Exposure Characteristics of the Analogous β-Carboline Alkaloids Harmaline and Harmine Based on the Efflux Transporter of Multidrug Resistance Protein 2[J]. Frontiers in pharmacology,2017,8:541.
APA	Li, Shuping.,Zhang, Yunpeng.,Deng, Gang.,Wang, Yuwen.,Qi, Shenglan.,...&Wang, Changhong.(2017).Exposure Characteristics of the Analogous β-Carboline Alkaloids Harmaline and Harmine Based on the Efflux Transporter of Multidrug Resistance Protein 2.Frontiers in pharmacology,8,541.
MLA	Li, Shuping,et al."Exposure Characteristics of the Analogous β-Carboline Alkaloids Harmaline and Harmine Based on the Efflux Transporter of Multidrug Resistance Protein 2".Frontiers in pharmacology 8(2017):541.