Table 2 Pharmacokinetic (PK) parameters of JH-ENT-01 and dilazep

From: Design of an equilibrative nucleoside transporter subtype 1 inhibitor for pain relief

 

JH-ENT-01

Dilazep

PK PARAMETER

Plasma

Brain

Spinal Cord

TG

DRG

Plasma

Brain

Spinal Cord

TG

DRG

Tmax (time of Cmax) [h]

0.50

1.50

0.50

1.50

0.17

0.50

0.17

1.50

1.50

0.17

Cmax (maximum observed concentration) [ng/mL]

164

309

97

159

641

409

166

313

525

1531

Tlast (time of last measurement) [h]

24

24

12

24

24

8

8

8

8

24

Clast (conc. at Tlast) [ng/mL]

0.26

3.27

6.99

3.83

4.25

0.51

0.67

0.93

2.80

1.64

AUClast (area 0-Tlast) [h ng/ mL]

760

1630

588

1042

2647

588

482

865

1340

1620

AUCinf (area 0-infinity) [h ng/mL]

761

1646

609

1084

2677

589

483

866

1345

1641

t1/2 (terminal half-life) [h]

2.48

3.38

2.13

7.56

4.91

0.83

0.84

0.78

1.23

9.05

Vz/F (volume of distr. based on terminal phase) [L/kg]

141

89

152

302

79

61

75

39

39

239

Cl/F (clearance as Dose/AUCinf) [L/h/ kg]

39

18

49

28

11

51

62

35

22

18

MRTinf (mean residence time, 0-infinity) [h]

3.75

4.62

4.01

4.87

4.65

1.29

1.72

1.50

1.50

1.64

  1. PK parameters calculated by WinNonlin non-compartmental modeling of averaged (n = 3 per time point, over 24 h) concentration-time plasma and tissue obtained after subcutaneous administration of 30 mg/kg of JH-ENT-01 and 29 mg/kg dilazep dihydrochloride (equimolar to 30 mg/kg JH-ENT-01).