Front Pharmacol. 2020 Jun 12;11:883. doi: 10.3389/fphar.2020.00883. eCollection 2020.
Conventional Pig as Animal Model for Human Renal Drug Excretion Processes: Unravelling the Porcine Renal Function by Use of a Cocktail of Exogenous Markers.
Frontiers in pharmacology
Laura Dhondt, Siska Croubels, Peter De Paepe, Steven C Wallis, Saurabh Pandey, Jason A Roberts, Jeffrey Lipman, Pieter De Cock, Mathias Devreese
Affiliations
Affiliations
- Department of Pharmacology, Toxicology and Biochemistry, Ghent University, Merelbeke, Belgium.
- Heymans Institute of Pharmacology, Ghent University, Ghent, Belgium.
- UQ Centre for Clinical Research, The University of Queensland, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia.
- Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia.
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia.
- Department of Pharmacy, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia.
- Division of Anaesthesiology Critical Care Emergency and Pain Medicine, Nîmes University Hospital, University of Montpellier, Nîmes, France.
- Department of Pharmacy, Ghent University Hospital, Ghent, Belgium.
- Department of Paediatric Intensive Care, Ghent University Hospital, Ghent, Belgium.
PMID: 32595506
PMCID: PMC7303324 DOI: 10.3389/fphar.2020.00883
Abstract
Over recent years, pigs have been promoted as potential animal model due to their anatomical and physiological similarities with humans. However, information about the contribution of distinct renal elimination processes [glomerular filtration rate (GFR), effective renal plasma flow (ERPF), tubular secretion, and reabsorption] in pigs is currently limited. Therefore, a cocktail of renal markers, consisting of iohexol (GFR), para-aminohippuric acid (ERPF and net tubular anion secretion), pindolol (net tubular cation secretion), and fluconazole (net tubular reabsorption) was administered intravenously to 7-week-old male conventional pigs. Plasma and urinary concentrations were determined using validated analytical methods. The clearance of iohexol (GFR) was 97.87 ± 16.05 ml/min/m² (mean ± SD). The ERPF, calculated as the renal clearance of PAH, was 226.77 ± 62.45 ml/min/m², whereas the net tubular secretion of PAH was 130.28 ± 52.62 ml/min/m². The net tubular secretion of R-pindolol and S-pindolol was 13.53 ± 12.97 and 18.01 ± 39.23 ml/min/m², respectively. The net tubular reabsorption of fluconazole was 78.32 ± 13.52 ml/min/m². Overall, this cocktail of renal markers was considered to be safe for use in pigs since no adverse effects were observed. Iohexol, PAH and fluconazole were considered suitable renal marker to assess the porcine renal function. Pindolol seems less appropriate due to the high degree of nonrenal clearance in pigs. The values of GFR, ERPF, and anion secretion are within the same range for both human and pig. Regarding the tubular reabsorption of fluconazole, slightly higher values were obtained for pigs. Nevertheless, these results indicate the conventional pig could be an appropriate animal model to study renal drug elimination processes in humans.
Copyright © 2020 Dhondt, Croubels, De Paepe, Wallis, Pandey, Roberts, Lipman, De Cock and Devreese.
Keywords: animal model; fluconazole; iohexol; para-aminohippuric acid; piglet; pindolol; renal function
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