ArticleJournal of pharmacokinetics and biopharmaceutics1991
Moment analysis of drug disposition in kidney. V: In vivo transepithelial transport of p-aminohippurate in rat kidney.
Article in Journal of pharmacokinetics and biopharmaceutics, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 13 citations in OpenAlex.
- Effects of fosfomycin and imipenem/cilastatin on nephrotoxicity and renal excretion of vancomycin in rats.Pharmaceutical research · 1998Article
- Discrepancies in pharmacokinetic parameter estimation between bolus and infusion studies in the perfused rat hindlimb.Journal of pharmacokinetics and biopharmaceutics · 1995Article
- Quantitative analysis of drug handling by the kidney using a physiological model of renal drug clearance.European journal of clinical pharmacology · 1993Article
- Moment analysis of drug disposition in kidney. VI: Assessment of in vivo transmembrane transport of p-aminohippurate in tubular epithelium.Journal of pharmacokinetics and biopharmaceutics · 1991Article
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5 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
A new method that can assess the kinetics of in vivo transepithelial transport in rat kidney has been established. The method is based upon a multiple-indicator dilution experiment and the moment analysis theory. After simultaneous bolus injections of p-aminohippurate (PAH) and inulin into the right renal artery, blood samples were taken from the carotid artery and urine was separately collected from right and left ureters. The characteristic response for the first passage of drugs through the right kidney was evaluated by taking blood circulation into consideration. To determine the mean artery-to-vein transit time and the extraction ratio in the kidney, an intravenous injection was also performed as a reference experiment for deconvolution. The urinary excretion curve corresponding to the first passage was obtained as the difference between both kidneys. The mean artery-to-lumen transit time (mean transepithelial transit time, Tcell) was computed by subtracting the mean urinary transit time of inulin from that of secreted PAH. Since transport across the luminal membrane into the lumen from tubular epithelial cells can influence the cellular residence time of drugs, Tcell and the single-pass mean residence time in epithelial cells (Tcell,sp) can be thought of describing luminal membrane transport. The value of Tcell obtained for 0.1 mM PAH was 22 sec and it was prolonged to 61 sec in the presence of probenecid, suggesting an inhibitory effect on transport across the luminal membrane. On the other hand, antiluminal membrane transport into cells from blood is characterized by the volume of distribution in the kidney (VdPAH). VdPAH was remarkably decreased by treatment with probenecid, indicating an inhibitory effect on antiluminal membrane transport. The effects of probenecid on both sides of epithelial cell membrane transport were first demonstrated in vivo. The present method is useful for the analysis of in vivo transepithelial transport including antiluminal and luminal membrane transport for drugs excreted via tubular secretion.
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