Effect of EMP on sex ratio of the offspring of male BALB/c mice / 中华放射医学与防护杂志

ABSTRACT

Objective To investigate the effects of EMP exposure to male BABL/c mice on the reproduction and its sex ratio.Methods Thirty-three male BALB/c mice were randomly divided into sham-exposed group,10 000 pulses/d exposed group,and 100 000 pulses/d exposed group with 50 Hz static magnetic field of 35 kV/m for 2 weeks consecutively,then the male mice were mated with unexposed females (1 male vs.2 female).Mated males were sacrificed to examine the exposure effects on sperm number and testis index after 7 days of mating.The sex ratio of embryos collected from unexposed mated females was investigated by PCR.Results The sex ratio of offspring was 0.298 (14/47) in the 10 000 pulses/d exposed group,significantly lower than 0.871 (27/31) in the sham-exposed group.No statistical changes were observed in the sex ratio of offspring,sperm number,the weights of testis and testis index after 100 000 pulses/d exposure.Conclusions The exposure of male mice to 35 kV/m EMP at 10 000 pulses/d for 2 weeks consecutively may change the sex ratio of mice's offspring.