Abstract

PAH accumulation in renal cortical slices of rats is age-related different. Kinetic parameters were quantified using the Lineweaver-Burk analysis. The Michaelis constant for PAH uptake is 0.50 mM in all age groups, i.e., the affinity of PAH for the transport sites is the same. The maximum PAH concentrations (steady-state) in renal cortical slices from 5-, 20-, 33-, and 55-day-old rats are 0.91, 1.72, 2.57, and 1.72mM, respectively. This finding suggests that the number of transport sites is increasing during the postnatal development of the kidney.

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