Table 2 Major changes obtained in haematology and coagulation measurements (group mean values ± standard deviation) in male and female rats treated intravenously for 4 weeks and 2 weeks of recovery period with 0 (vehicle = 0.9% saline solution), 5, 9 and 15 mg/kg/day of SET-M33 peptide.

From: Safety evaluations of a synthetic antimicrobial peptide administered intravenously in rats and dogs

Sex

Dose (mg/kg/day)

Haematology and coagulation week 4 of treatment—Group mean values

Hct (L/L)

Hb (g/dL)

RBC (× 1012/L)

Retic (× 1012/L)

Retic (%)

MCH (pg)

MCHC (g/dL)

MCV (fL)

WBC (× 109/L)

HDW (g/dL)

L (× 109/L)

LUC (× 109/L)

Plt (× 109/L)

SPT (sec)

SAPT (sec)

Male

0

0.454 ± 0.0145

15.3 ± 0.45

8.49 ± 0.32

0.139 ± 0.0233

1.64 ± 0.253

18.00 ± 0.49

33.70 ± 0.71

53.50 ± 0.79

10.00 ± 1.761

2.94 ± 0.097

8.67 ± 1.283

0.08 ± 0.022

779 ± 143.1

23.0 ± 6.54

37.6 ± 5.65

5

0.401** ± 0.0198

13.5** ± 0.48

7.55** ± 0.306

0.152 ± 0.0283

2.00* ± 0.352

17.90 ± 0.38

33.80 ± 0.76

53.00 ± 1.15

10.76 ± 1.713

3.21** ± 0.126

9.73 ± 1.418

0.08 ± 0.027

917* ± 95.4

21.8 ± 0.82

36.5 ± 6.18

9

0.348** ± 0.0275

11.9** ± 0.84

6.81** ± 0.538

0.076** ± 0.0292

1.10** ± 0.357

17.40* ± 0.39

34.20 ± 0.73

51.0** ± 1.71

11.36 ± 2.206

3.30** ± 0.174

10.30 ± 2.104

0.10 ± 0.049

923* ± 148.7

24.1** ± 0.68

31.6* ± 5.31

15

0.311** ± 0.0158

10.7** ± 0.58

6.15** ± 0.322

0.037** ± 0.0091

0.60** ± 0.160

17.50* ± 0.47

34.6** ± 0.50

50.50** ± 0.77

13.51** ± 2.506

3.23** ± 0.151

12.35** ± 2.216

0.14** ± 0.053

961** ± 130.1

24.5** ± 1.05

31.9* ± 5.11

Female

0

0.416 ± 0.0133

14.1 ± 0.47

7.62 ± 0.23

0.176 ± 0.0445

2.31 ± 0.52

18.50 ± 0.40

33.80 ± 0.73

54.70 ± 1.64

7.30 ± 2.064

2.76 ± 0.096

6.25 ± 2.013

0.05 ± 0.023

853 ± 204.900

21.9 ± 1.150

37.0 ± 5.260

5

0.382** ± 0.0127

12.9** ± 0.46

7.11** ± 0.291

0.180 ± 0.0473

2.55 ± 0.712

18.20 ± 0.40

33.90 ± 0.43

53.70 ± 0.91

7.11 ± 0.596

2.92 ± 0.127

6.31 ± 0.710

0.05 ± 0.011

1004* ± 115.600

21.9 ± 0.660

33.1 ± 5.900

9

0.352** ± 0.0199

12.0** ± 0.48

6.61** ± 0.358

0.112** ± 0.0462

1.69* ± 0.646

18.10 ± 0.43

34.00 ± 0.80

53.30* ± 0.76

9.15 ± 2.982

3.34** ± 0.189

7.91 ± 2.475

0.08** ± 0.038

1075** ± 136.70

23.6** ± 1.00

26.7** ± 3.890

15

0.284** ± 0.0223

9.7** ± 0.75

5.44** ± 0.488

0.060** ± 0.0162

1.12** ± 0.345

17.9** ± 0.48

34.20 ± 0.33

52.3** ± 1.44

10.34** ± 1.917

2.99** ± 0.199

9.22** ± 1.713

0.09** ± 0.019

1250** ± 181.00

23.3** ± 1.270

25.6** ± 5.910

Sex

Dose (mg/kg/day)

Haematology and coagulation week 2 of recovery—Group mean values

Hct (L/L)

Hb (g/dL)

RBC (× 1012/L)

Retic (× 1012/L)

Retic (%)

MCH (pg)

MCHC (g/dL)

MCV (fL)

WBC (× 109/L)

HDW (g/dL)

L (× 109/L)

LUC (× 109/L)

Plt (× 109/L)

SPT (sec)

SAPT (sec)

Male

0

0.450 ± 0.0136

15.2 ± 0.4

8.73 ± 0.359

0.122 ± 0.0091

1.40 ± 0.13

17.4 ± 0.61

33.8 ± 0.74

51.6 ± 0.8

9.86 ± 1.818

3.03 ± 0.075

8.39 ± 1.371

0.08 ± 0.026

722 ± 58.2

21.5 ± 0.63

20.3 ± 3.44

15

0.262** ± 0.0197

9.5** ± 0.55

5.36** ± 0.37

0.061* ± 0.412

1.1 ± 0.797

17.7 ± 0.47

36.1** ± 0.98

49.0 ± 2.37

6.84* ± 1.913

3.25* ± 0.16

6.12 ± 1.655

0.05 ± 0.034

919* ± 169.1

21.1 ± 0.67

13.3*

 ± 3.41

Female

0

0.431 ± 0.0097

15 ± 0.29

8.04 ± 0.097

0.083 ± 0.0311

1.03 ± 0.385

18.7 ± 0.29

34.9 ± 0.31

53.6 ± 1.07

7.47 ± 1.792

2.64 ± 0.102

6.16 ± 1.375

0.06 ± 0.014

81 ± 135

22.4 ± 0.33

20.4 ± 1.8

15

0.268** ± 0.0087

9.3** ± 0.34

5.31** ± 0.139

0.063 ± 0.0254

1.17 ± 0.458

17.5** ± 0.62

34.7 ± 0.5

50.6** ± 1.15

7.89 ± 1.712

3.04** ± 0.167

6.58 ± 1.708

0.05 ± 0.018

1208** ± 106.8

22.9 ± 0.79

16.8* ± 1.37

  1. Hct haematocrit, Hb haemoglobin, RBC erythrocyte count, Retic reticulocyte count (absolute and relative), MCH mean corpuscular haemoglobin, MCHC mean corpuscular haemoglobin concentration, MCV mean corpuscular volume, WBC leukocyte count, total, HDW haemoglobin concentration distribution width, L lymphocytes, LUC large unstained cells, Plt platelet (thrombocyte) count, SPT prothrombin time, SAPT activated partial thromboplastin time.
  2. Significant differences between peptide vs. control groups were expressed at the 5% (*p < 0.05) or 1% (**p < 0.01) level. For statistical analysis, Dunnett, Shirley’ Williams, Wilcoxon and t tests were used.