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. 2020 Apr 23;12(4):387. doi: 10.3390/pharmaceutics12040387

Table 4.

The relationship between the affinity of the complex formed between CIP and the metal cation and pulmonary exposure to CIP after IT administration of the complex.

(CIP–Ca)2+ (CIP–Cu)2+ CIP solution
Ka (M−1) (from [31]) 100 906,900
Concentration (µM) needed to reduce the CIP Papp by 50% (from [31]) 40 0.04
ELF Cmax (µg/mL) after IT administration to rats (from [22]) 26.5 ± 17.7 142.3 ± 81.5 1.0 ± 0.4
CIP AUCELF to AUCplasma ratio after IT administration to rats (from [22]) 203 1069 9.8