Table 3 Blood biochemical parameters and concentrations of pro- and anti-inflammatory cytokines after chronic high dose of S-CPP.

From: Pharmacokinetics, biodistribution and toxicology of novel cell-penetrating peptides

  

PBS (n = 5)

L-S-CPP (n = 7)

D-S-CPP (n = 8)

Biochemistry

units

Mean ± SEM

Mean ± SEM

Mean ± SEM

Glucose

mmol/L

16.5 ± 0.4

14.8 ± 1.1

15.4 ± 1.1

Blood Urea Nitrogen

mmol/L

7.8 ± 0.0

6.3 ± 0.0

6.9 ± 0.0

Creatinine

mmol/L

18.0 ± 0.9

18.0 ± 0.4

18.0 ± 0.4

Phosphate

mmol/L

2.8 ± 0.2

3.0 ± 0.2

2.8 ± 0.1

Calcium

mmol/L

2.3 ± 0.1

2.6 ± 0.2

2.5 ± 0.0££££

Total protein

g/L

46.8 ± 1.2

52.4 ± 0.1

50.6 ± 1.4

Albumin

g/L

20.0 ± 0.6

23.4 ± 0.7$$

21.9 ± 0.7

Alanine Transaminase

U/L

35.4 ± 3.8

82.0 ± 11.5$$

99.9 ± 17.2$$$

Alkaline Phosphatase

U/L

42.8 ± 4.5

54.9 ± 5.3

66.4 ± 6.8£

γ-Glutamyl Transferase

106/mm3

10.0 ± 0.0

10.0 ± 0.0

10.0 ± 0.0

Total Bilirubin

µmol/L

1.0 ± 0.0

2.3 ± 0.5

1.4 ± 0.4

Cholesterol

mmol/L

4.1 ± 0.1

4.85 ± 0.3

4.5 ± 0.1££

Cytokines (pg/mL)

 

Mean

Mean

Mean

Interleukin 1β

IL-1β

OOR < 

OOR < or 3.3

OOR < 

Interleukin 2

IL-2

OOR < or 0.4

OOR < or 0.8

OOR < or 0.9

Interleukin 4

IL-4

OOR < 

OOR < 

OOR < 

Interleukin 5

IL-5

OOR < or 2.7

OOR < or 6.0

OOR < or 5.0

Interleukin 10

IL-10

OOR < or 12.5

OOR < or 23.3

20.3

Granulocyte–macrophage colony-stimulating factor

GM-CSF

OOR < 

OOR < 

OOR < 

Interferon γ

INF-γ

3.0

2.9

4.0

Tumor necrosis factor α

TNFα

44.7

44.7

26.1

  1. Mice were injected i.v. twice a day for 5 days (total of 10 injections) and sacrificed by an intracardiac perfusion. Normal levels of γGT (γ Glutamyl Transferase, U/l) and TB (total bilirubin, µmol/l) do not exceed 10, whereas creatinine should not go over 18 µmol/l. Injected dose was 3.6 mg  kg−1. Biochemistry data are presented as the mean ± SEM, and cytokines as the mean of duplicates (PBS) or triplicate (L/D-S-CPP) in pg/ml when it was possible because most data were out of range (OOR) and extrapolated by the software. Statistical analysis: Unpaired t-test (£p < 0.05, ££p < 0.01; ££££p < 0.0001) or Mann–Whitney ($$p < 0.01; $$$p < 0.001), PBS versus S-CPP injected. The differences measured remained within normal ranges for a mouse. Pro-inflammatory cytokines : TNF-α, IFN-ɣ, GM-CSF, IL-1ß, IL-2 and anti-inflammatory cytokines : IL-5, IL-4, IL-10. Note: Overall values are very low. Certain points stand out for TNFα but the vast majority of values are near the detection limit.