[Effects of rat maternal fenvalerate exposure on behavior development of rat pubertal female offspring].
OBJECTIVE
To explore the effects of rat maternal exposure to fenvalerate during lactation on behaviors development in rat pubertal female offspring.


METHODS
Twelve ICR maternal mice were randomly divided into 7.5 and 30.0 mg/kg fenvalerate exposure groups and control group (four dams each group, ten pups each dam, half male half female, twenty female pups each group). The exposure groups were orally exposed to fenvalerate at the doses of 7.5 and 30 mg/kg a day from postnatal day 1 (PND1) to PND21. The control group was exposed to corn oil. The effects of maternal fenvalerate exposure during lactation on motor and species-typical behaviors in female offspring were observed on the PND 35.


RESULTS
The peripheral time and standing frequency of 30.0 mg/kg exposure group were (263.4 ± 54.8) s and (47.3 ± 16.2) times, which were significantly higher than those [(203.4 ± 53.0) s and (30.9 ± 17.3) times] of control group (P < 0.05). The scores in 7.5 mg/kg and 30.0 mg/kg exposure groups were 56.50 ± 50.79 and 54.73 ± 53.91, respectively, which were significantly lower than that (114.53 ± 53.87) in control group (P < 0.05). However, no significant differences in beam walking scores, food hoarding quantity, food digging quantity, and nest construction scores between two exposure groups were found (P > 0.05).


CONCLUSIONS
The rat maternal exposure to fenvalerate during lactation could decrease the ability of exploration and motor condition and increase the anxiety but not affect life habit in rat pubertal female offspring.
Wuxi Maternity and Child Health Hospital, Wuxi, Jiangsu province 214002, China.
Heng
H
Zhang
Jing-ying
JY
Xiang
Huan
H
Ning
D000818:Animals; D001522:Behavior, Animal; D005260:Female; D008297:Male; D018811:Maternal Exposure; D051379:Mice; D008813:Mice, Inbred ICR; D009570:Nitriles / Q000633:toxicity*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D011722:Pyrethrins / Q000633:toxicity*
D009570:Nitriles; D011722:Pyrethrins; C017690:fenvalerate