PMID- 35183887 OWN - NLM STAT- MEDLINE DCOM- 20220315 LR - 20220531 IS - 1873-264X (Electronic) IS - 0731-7085 (Linking) VI - 212 DP - 2022 Apr 1 TI - Tamsulosin alters the pharmacokinetics of metformin via inhibition of renal multidrug and toxin extrusion protein 1 and organic cation transporter 2 in rats. PG - 114666 LID - S0731-7085(22)00087-5 [pii] LID - 10.1016/j.jpba.2022.114666 [doi] AB - Among the endocrine and metabolic disorders, type-2 diabetes mellitus (T2DM) and benign prostatic hyperplasia (BPH) are common progressive diseases related to aging. Metformin and tamsulosin as the first-choice drug for patients with T2DM and BPH, respectively, are often co-administered to male patients with T2DM and BPH. However, whether concomitantly administering metformin and tamsulosin leads to drug-drug interactions (DDIs) remains unclear. This study aimed to evaluate the effect of tamsulosin on the pharmacokinetics of metformin and explore the relevant underlying mechanism. The plasma, urine, and tissue concentrations of metformin were analyzed using HPLC, and metformin cell uptake was analyzed using LC-MS/MS. In addition, western blotting was used to investigate the expression of Oct1, Oct2, and Mate1. As demonstrated by comparison with metformin alone, tamsulosin significantly increased the area under concentration-time curves (AUC(0-t)), the maximum plasma concentration (C(max)) and the decreased 24 h cumulative urinary excretion of metformin after single or multiple-dose administration in rats, as well as increased the kidney tissue concentration of metformin after multiple-dose. In addition, tamsulosin treatment significantly inhibited the expression of Mate1 and Oct2 in rat kidneys, but Oct1 and Mate1 did not show a significant difference in the liver. Consistently, tamsulosin inhibited OCT2 and MATE1 expressions and decreased metformin uptake in HEK293 cells. Notably, serum LCA level in the co-administration group was increased by 34% and 39% after multiple-dose (7 and 14 consecutive days, respectively) administration compared to the metformin alone group. Altogether, our data suggest that tamsulosin could increase systemic exposure and reduce excretion of metformin via inhibiting Oct2 and Mate1-mediated transport cooperatively. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Saad, Abdulaziz Ahmed A AU - Saad AAA AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Zhang, Fan AU - Zhang F AD - Department of Pharmacy, the First Hospital of Lanzhou University, Lanzhou 730000, China. FAU - Refat, Moath AU - Refat M AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Mohammed, Eyad Abdulwhab H AU - Mohammed EAH AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Zhang, Mingkang AU - Zhang M AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Chen, Yuyue AU - Chen Y AD - Department of Pharmacy, the First Hospital of Lanzhou University, Lanzhou 730000, China. FAU - Al Hamyari, Bandar AU - Al Hamyari B AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Alafifi, Jameel AU - Alafifi J AD - School of Pharmacy, Lanzhou University, Lanzhou 730000, China. FAU - Wu, Xin'an AU - Wu X AD - Department of Pharmacy, the First Hospital of Lanzhou University, Lanzhou 730000, China. Electronic address: wuxa@lzu.edu.cn. LA - eng PT - Journal Article DEP - 20220216 PL - England TA - J Pharm Biomed Anal JT - Journal of pharmaceutical and biomedical analysis JID - 8309336 RN - 0 (Organic Cation Transport Proteins) RN - 0 (Organic Cation Transporter 2) RN - 0 (Slc22a2 protein, rat) RN - 9100L32L2N (Metformin) RN - G3P28OML5I (Tamsulosin) SB - IM MH - Animals MH - Chromatography, Liquid MH - HEK293 Cells MH - Humans MH - Kidney/metabolism MH - Male MH - *Metformin MH - Organic Cation Transport Proteins/metabolism/pharmacology MH - Organic Cation Transporter 2/metabolism MH - Rats MH - Tamsulosin/pharmacology MH - Tandem Mass Spectrometry OTO - NOTNLM OT - Metformin OT - Multidrug and toxin extrusion 1 OT - Organic cation transporter 2 OT - Pharmacokinetic interaction OT - Tamsulosin EDAT- 2022/02/21 06:00 MHDA- 2022/03/16 06:00 CRDT- 2022/02/20 20:33 PHST- 2021/11/17 00:00 [received] PHST- 2022/01/30 00:00 [revised] PHST- 2022/02/13 00:00 [accepted] PHST- 2022/02/21 06:00 [pubmed] PHST- 2022/03/16 06:00 [medline] PHST- 2022/02/20 20:33 [entrez] AID - S0731-7085(22)00087-5 [pii] AID - 10.1016/j.jpba.2022.114666 [doi] PST - ppublish SO - J Pharm Biomed Anal. 2022 Apr 1;212:114666. doi: 10.1016/j.jpba.2022.114666. Epub 2022 Feb 16.