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Table 2 Summary of goodness-of-fit based on the minimum value of objective function (MVOF), of eight assumptions within the modeling of L-DOPA in plasma and brainECF.

From: Evaluation of blood-brain barrier transport and CNS drug metabolism in diseased and control brain after intravenous L-DOPA in a unilateral rat model of Parkinson's disease

Assumption

Results

MVOF

V4

V5

Q4

Q5

K40

K50

NONE

general

-2814

11100

16100

20,9

25,3

0,211

0,135

 

SE

 

3840

6970

3,74

9,24

0,033

0,0132

 

CV(%)

 

34,6

43,3

17,9

36,5

15,6

9,78

V5 = V4

general

-2808

12700

 

22,9

20,1

0,193

0,161

 

SE

 

5700

 

4,33

7,13

0,0329

0,0185

 

CV(%)

 

44,9

 

18,9

35,5

17

11,5

k50 = k40

general

-2803

13200

12000

20,1

26

0,175

 
 

SE

 

3870

4990

3,36

8,77

0,0226

 
 

CV(%)

 

29,3

41,6

16,7

33,7

12,9

 

Q5 = Q4

general

-2813

11400

14400

22

 

0,211

0,135

 

SE

 

3080

3700

3,18

 

0,027

0,0127

 

CV(%)

 

27

25,7

14,5

 

12,8

9,41

V5 = V4 & k50 = k40

general

-2804

13000

 

21,4

24,3

0,179

 
 

SE

 

3410

 

3,2

5,56

0,0199

 
 

CV(%)

 

26,2

 

15

22,9

11,1

 

V5 = V4 & Q5 = Q4

general

m.t.

13000

 

22

 

0,19

0,17

 

SE

 

-

-

-

-

-

-

 

CV(%)

 

-

-

-

-

-

-

k50 = k40 & Q5 = Q4

general

-2801

13900

10600

21,7

 

0,173

 
 

SE

 

8290

6610

7,79

 

0,0276

 
 

CV(%)

 

59,6

62,4

35,9

 

16

 

V5 = V4 & k50 = k40 & Q5 = Q4

general

-2801

13300

 

22,4

 

0,175

 
 

SE

 

3310

 

3,17

 

0,0201

 
 

CV(%)

 

24,9

 

14,2

 

11,5

 
  1. The assumption 'NONE' is where all parameters were estimated.
  2. V = volume of distribution, Q = inter-compartmental clearance, k = elimination rate constant