Table 7

Effect of chronic exposure to two types of gasoline vapour on the number of aggressive behaviour in male rats.

Parameter


GROUP

Number of aggression events


Tooth chattering

Threat posture

Leaping and biting

Boxing position


Control

1.2 ± 0.33

1.1 ± 0.31

0.9 ± 0.35

0.8 ± 0.25


Leaded gasoline

3.7 ± 0.63 a*

3.9 ± 0.43 a**

3.7 ± 0.58 a**

2.7 ± 0.47 a*


Unleaded gasoline

4 ± 0.87 a*

3.6 ± 0.87 a*

3.4 ± 0.70 a*

3.2 ± 0.74 a**


Values are expressed as means ± SE

a: significantly different from the control group.

Asterisks indicate the level of significance (* P < 0.05; ** P 0.01.)

The number of animals was five pairs per ten days.

Kinawy BMC Physiology 2009 9:21   doi:10.1186/1472-6793-9-21

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