PMID- 29471066 OWN - NLM STAT- MEDLINE DCOM- 20180912 LR - 20200106 IS - 2299-5684 (Electronic) IS - 1734-1140 (Linking) VI - 70 IP - 2 DP - 2018 Apr TI - A pharmacokinetic study on lapatinib in type 2 diabetic rats. PG - 191-195 LID - S1734-1140(17)30311-0 [pii] LID - 10.1016/j.pharep.2017.09.003 [doi] AB - BACKGROUND: Diabetes mellitus (DM) is a complex metabolic disorder which affects the function of numerous tissues and alters the pharmacokinetic parameters of many drugs. As many oncological patients are diabetics, it is important to determine the influence of this chronic disease on the pharmacokinetics (PK) of anticancer drugs. Lapatinib is a tyrosine kinase inhibitor (TKI), approved for the treatment of human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer. The aim of the study was to compare the PK of lapatinib in normal and type 2 diabetes mellitus (T2DM) model rats. Additionally, the effect of lapatinib on blood glucose concentrations was examined. METHODS: The PK of lapatinib was studied in healthy rats (n=6, the healthy group) and T2DM model rats (n=6, the diabetic group). The rats received lapatinib orally as a single dose of 50mg. Plasma concentrations of lapatinib were measured with high-performance liquid chromatography method coupled with a tandem mass spectrometry. RESULTS: The plasma concentrations of lapatinib were increased in the T2DM model rats. There were statistically significant differences between the groups in C(max) (p=0.0104) and AUC(0-t) (p=0.0265). The reduction of glycaemia in the range of 1.2-41.5% and in the range of 4.1-36.8% was observed in the diabetic and healthy animals, respectively. CONCLUSIONS: Higher concentrations of lapatinib in the diabetic rats may suggest the need for application of lower doses of this TKI in patients with DM. CI - Copyright (c) 2017. Published by Elsevier B.V. FAU - Karbownik, Agnieszka AU - Karbownik A AD - Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, Poznan, Poland. Electronic address: agnieszkakarbownik@o2.pl. FAU - Szalek, Edyta AU - Szalek E AD - Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, Poznan, Poland. FAU - Sobanska, Katarzyna AU - Sobanska K AD - Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, Poznan, Poland. FAU - Klupczynska, Agnieszka AU - Klupczynska A AD - Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Poznan, Poland. FAU - Plewa, Szymon AU - Plewa S AD - Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Poznan, Poland. FAU - Grabowski, Tomasz AU - Grabowski T AD - Polpharma Biologics, Gdansk, Poland. FAU - Wolc, Anna AU - Wolc A AD - Department of Animal Science, Iowa State University, Ames, IA, USA; Hy-Line International, Dallas Center, IA USA. FAU - Moch, Marta AU - Moch M AD - Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, Poznan, Poland. FAU - Kokot, Zenon J AU - Kokot ZJ AD - Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Poznan, Poland. FAU - Grzeskowiak, Edmund AU - Grzeskowiak E AD - Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, Poznan, Poland. LA - eng PT - Journal Article DEP - 20170918 PL - Switzerland TA - Pharmacol Rep JT - Pharmacological reports : PR JID - 101234999 RN - 0 (Antineoplastic Agents) RN - 0 (Blood Glucose) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Quinazolines) RN - 0VUA21238F (Lapatinib) SB - IM MH - Animals MH - Antineoplastic Agents/pharmacokinetics MH - Blood Glucose/drug effects MH - Chromatography, High Pressure Liquid/methods MH - Diabetes Mellitus, Experimental/*blood MH - Diabetes Mellitus, Type 2/*blood MH - Lapatinib MH - Male MH - Protein Kinase Inhibitors/pharmacokinetics MH - Quinazolines/blood/*pharmacokinetics MH - Rats MH - Rats, Wistar MH - Tandem Mass Spectrometry/methods OTO - NOTNLM OT - Diabetic rats OT - Glycaemia OT - Lapatinib OT - Pharmacokinetics EDAT- 2018/02/23 06:00 MHDA- 2018/09/13 06:00 CRDT- 2018/02/23 06:00 PHST- 2017/04/28 00:00 [received] PHST- 2017/07/31 00:00 [revised] PHST- 2017/09/15 00:00 [accepted] PHST- 2018/02/23 06:00 [pubmed] PHST- 2018/09/13 06:00 [medline] PHST- 2018/02/23 06:00 [entrez] AID - S1734-1140(17)30311-0 [pii] AID - 10.1016/j.pharep.2017.09.003 [doi] PST - ppublish SO - Pharmacol Rep. 2018 Apr;70(2):191-195. doi: 10.1016/j.pharep.2017.09.003. Epub 2017 Sep 18.