Table 2 Liver microsomal stability of cordycepin tested with rat and human liver microsomes (mean ± SD, n = 3).

From: A novel nucleoside rescue metabolic pathway may be responsible for therapeutic effect of orally administered cordycepin

 

Rat liver microsome

Human liver microsome

NADPH

+

+

+

+

Pentostatin

+

+

+

+

CLint (mL/min/kg)

ND

392.2 ± 31.3

ND

390.0 ± 51.4

ND

181.4 ± 13.9

ND

179.1 ± 5.3

Fh (%), well-stirred modela

ND

12.4 ± 0.9

ND

12.5 ± 1.5

ND

10.3 ± 0.7

ND

10.4 ± 0.3

Fh (%), parallel-tube modela

ND

0.1 ± 0.0

ND

0.1 ± 0.1

ND

0.0 ± 0.0

ND

0.0 ± 0.0

  1. NADPH, Nicotinamide adenine dinucleotide phosphate; CLint, intrinsic clearance; Fh, fraction that escapes hepatic metabolism; ND, not determined.
  2. The CLint and Fh for groups indicated ND could not be calculated as cordycepin was stable for the time period tested.
  3. aWell-stirred and parallel-tube models were adopted from ref.51