Abstract
Isolated, perfused rat hindlimb consists of skeletal muscle, skin, bone, and adipose. Hence, it is a heterogeneous preparation composed of slowly equilibrating tissues of different characteristics and fractional flow rates. This paper shows how caution should be exercised in interpreting the results following bolus administration and subsequent statistical moment analysis of intravascular markers (51Cr-erythrocytes and125I-albumin) and lipophilic barbiturates. For the intravascular markers, the events in the hindlimb are overshadowed by events in the connecting tubing and cannulas, due to their comparable volumes. For the barbiturates, these estimates appear to apply to short-term effects as the volume estimates obtained following infusion to steady state are greater than after bolus administration. For the extravascular markers,14C-sucrose,14C-urea, and3H-water, no such time dependency was shown. However, it is only from the outflow profiles following bolus administration that events in the tissue beds can be elucidated.
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N. B. Ruderman, M. N. Goodman, M. Berger, and S. Hagg. Effect of starvation on muscle glucose metabolism: studies with the isolated perfused rat hindquarter.Fed. Proc. 36:171–176 (1977).
W. L. Sexton, R. J. Korthuis, and M. H. Laughlin. Ischaemia-reperfusion injury in isolated rat hindquarters.J. Appl. Physiol. 68:387–392 (1990).
A. Bonen, M. G. Clark, and E. J. Henriksen. Experimental approaches in muscle metabolism: hindlimb perfusion and isolated muscle incubations.Am. J. Physiol. 266:E1-E16 (1994).
J. M. Díaz-García, A. M. Evans, and M. Rowland. Application of the axial dispersion model of hepatic drug elimination to the kinetics of diazepam in the isolated perfused rat liver.J. Pharmacokin. Biopharm. 20:171–193 (1992).
R. Hori, Y. L. He, Y. Saito, A. Kamiya, and Y. Tanigawara. Moment analysis of drug distribution in kidney. V:In vivo transepithelial transport of p-aminohippurate in rat kidney.J. Pharmacokin. Biopharm. 19:51–70 (1991).
T. Sakane, M. Nakatsu, A. Yamamoto, M. Hashida, H. Sezaki, S. Yamashita, and T. Nadai. Assessment of drug disposition in the perfused rat brain by statistical moment analysis.Pharm. Res. 8:683–689 (1991).
P. L. Williams and J. E. Riviere. Estimation of physiological volumes in the isolated perfused porcine skin flap.Res. Commun. Chem. Pathol. Pharmacol. 66:145–158 (1989).
R. Gubser, C. DiFrancesco, and M. H. Bickel. Uptake of lipophilic model compounds into the isolated perfused rat epididymal adipose tissue.J. Pharmacol. Exp. Ther. 237:967–971 (1986).
T. Kakutani, K. Yamaoka, M. Hashida, and H. Sezaki. A new method for assessment of drug disposition in muscle: application of statistical moment theory to local perfusion systems.J. Pharmacokin. Biopharm. 13:609–631 (1985).
Z. Y. Wu, L. P. Rivory, and M. S. Roberts. Physiological pharmacokinetics of solutes in the isolated perfused rat hindlimb: characterization of the physiology with changing perfusate flow, protein content and temperature using statistical moment analysis.J. Pharmacokin. Biopharm. 21:653–688 (1993).
A. C. Heatherington and M. Rowland. Estimation of reference spaces in the perfused rat hindlimb.Eur. J. Pharm. Sci. 2:261–270 (1994).
S. Toon and M. Rowland. Structure-pharmacokinetic relationships among the barbiturates in the rat.J. Pharmacol. Exp. Ther. 225:752–763 (1983).
A. C. Heatherington and M. Rowland. Development of a physiologically-based pharmacokinetic model in the rat hindlimb preparation: estimation of reference spaces.J. Pharm. Pharmacol. 45(Suppl. 2):1116 (1993).
A. C. Heatherington and M. Rowland Distribution of 5-alkyl-5-ethyl barbituric acids in the perfused rat hindlimb.Eur. J. Pharm. Sci. 2(1, 2):113 (1994).
L. Balk, J. Meijer, J. W. DePierre, and L. E. Appelgreen. The uptake and distribution of3H-benzo[a]pyrene in the Northern pike (Esox lucius). Examination by whole-body autoradiography and scintillation counting.Toxicol. Appl. Pharmacol. 74:430–449 (1984).
N. Benowitz, R. P. Forsyth, K. L. Melmon, and M. Rowland. Lidocaine disposition kinetics in monkey and man. I. Prediction by a perfusion model.Clin. Pharmacol. Ther. 16:87–98 (1974).
H. S. Chen and J. F. Gross. Estimation of tissue-to-plasma partition coefficients used in physiological pharmacokinetic models.J. Pharmacokin. Biopharm. 7:117–125 (1979).
S. Björkman, D. R. Stanski, D. Verotta, and H. Harashima. Comparative tissue concentration profiles of fentanyl and alfentanil in humans predicted from tissue/blood partition data obtained in rats.Anesthesiology 72:865–873 (1990).
S. W. Martin, A. J. Stevens, B. S. Brennan, M. L. Reis, M. Rowland, and J. B. Houston. Regional drug delivery: Permeability characteristics of the rat 6-day-old air pouch model of inflammation.Pharm. Res. (in press).
E. Nara, M. Masegi, T. Hatono, and M. Hashida. Pharmacokinetic analysis of drug absorption from muscle based on a physiological diffusion model: effect of molecular size on absorption.Pharm. Res. 9:161–168 (1992).
K. S. Pang, F. Barker, A. J. Schwab, and G. A. Goresky.14C urea and58Co EDTA as reference indicators in hepatic multiple indicator dilution studies.Am. J. Physiol. 259:G32-G40 (1990).
R. L. Dedrick, M. F. Flessner, J. M. Collins, and J. S. Schultz. A distributed model of peritoneal transport. InFrontiers in Peritoneal Dialysis, Field, Rich, and Associates, New York, 1986, pp. 31–36.
R. Studer and J. Potchen. The radioisotopic assessment of regional microvascular permeability to macromolecules.Microvasc. Res. 3:35–48 (1971).
L. Bent-Hansen. Whole body capillary exchange of albumin.Acta Physiol. Scand. 603(Suppl.):5–10 (1991).
H. Wiig, M. DeCarlo, L. Sibley, and E. M. Renkin. Interstitial exclusion of albumin in rat tissues measured by a continuous infusion method.Am. J. Physiol. 263:H1222-H1233 (1992).
B. Haraldsson. Physiological studies of macromolecular transport across capillary walls. Studies on continuous capillaries in rat skeletal muscle.Acta Physiol. Scand. 553(Suppl.):1–40 (1986).
C. A. Goresky. A linear method for determining liver sinusoidal and extravascular volumes.Am. J. Physiol. 204:626–640 (1963).
R. Kawai, A. Nakashima, I. Akasaka, Y. Takahashi, and M. Ohtawa. Measurement of vascular, interstitial and intracellular volumes in rats. Advances in Simultaneous Pharmacokinetic/Pharmacodynamic Modelling, 2nd International Symposium, The Netherlands, 1994.
A. C. Heatherington. A physiological based pharmacokinetic model for drug distribution. Ph.D. Thesis. University of Manchester, England (1994).
C. A. Goresky and M. Silverman. Effect of correction of catheter distortion on calculated liver sinusoidal volumes.Am. J. Physiol. 207:883–892 (1964).
L. Bent-Hansen. Initial plasma disappearance and tissue uptake of131I-albumin in normal rabbits.Microvasc. Res. 41:345–356 (1991).
L. Bent-Hansen. Initial plasma disappearance and distribution volume of131I-albumin and125I-fibrinogen in man.Acta Physiol. Scand. 136:455–461 (1989).
P. Sejrsen, W. P. Paaske, and O. Henriksen. Capillary permeability of131I-albumin in skeletal muscle.Microvasc. Res. 29:265–281 (1985).
M. Ichikawa, S. C. Tsao, T. H. Lin, S. Miyauchi, Y. Sawada, T. Iga, M. Hanano, and Y. Sugiyama. Albumin-mediated transport phenomenon observed for ligands with high membrane permeability. Effect of the unstirred water layer in the Disse space of rat liver.J. Hepatol. 16:38–49 (1992).
B. B. Brodie, J. J. Burns, L. C. Mark, P. A. Lief, E. Bernstein, and E. M. Papper. The fate of pentobarbital in man and dog and a method for its estimation in biological material.J. Pharmacol. Exp. Ther. 109:26–34 (1953).
Y. Igari, Y. Sugiyama, S. Awazu, and M. Hanano. Comparative physiologically based pharmacokinetics of hexobarbital, phenobarbital, and thiopental in the rat.J. Pharmacokin. Biopharm. 10:53–75 (1982).
R. N. Upton, C. Nancarrow, C. F. McLean, L. E. Mather, and W. B. Runciman. Thein vivo blood, fat and muscle concentrations of lignocaine and bupivacaine in the hindquarters of sheep.Xenobiotica 21:13–22 (1991).
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Heatherington, A.C., Rowland, M. Discrepancies in pharmacokinetic parameter estimation between bolus and infusion studies in the perfused rat hindlimb. Journal of Pharmacokinetics and Biopharmaceutics 23, 441–462 (1995). https://doi.org/10.1007/BF02353468
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DOI: https://doi.org/10.1007/BF02353468