Volume 7, Issue 2 (March 2005) 7, 189–194; 10.1111/j.1745-7262.2005.00007.x
Evaluation of spermatogenesis and fertility in F1 male rats after in utero and neonatal exposure to extremely low frequency electromagnetic fields
M K Chung, S J Lee, Y B Kim, S C Park, D H Shin, S H Kim and J C Kim
1.Reproductive Toxicology Division, Korea Institute of Toxicology, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
2.College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Korea
3.College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea
4.College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
Received: 2004-04-05 Accepted: 2004-10-08
Aim: To determine whether in utero and neonatal exposure to a 60 Hz extremely low frequency electromagnetic field (EMF) results in spermatotoxicity and reproductive dysfunction in the F1 offspring of rats.
Methods: Age-matched, pregnant Sprague-Dawley rats were exposed continuously (21 h/day) to a 60 Hz EMF at field strengths of 0 (sham control), 5, 83.3 or 500 μT from day 6 of gestation through to day 21 of lactation. The experimentally generated magnetic field was monitored continuously (uninterrupted monitoring over the period of the study) throughout the study.
Results: No exposure-related changes were found in exposed or sham-exposed animals with respect to the anogenital distance, preputial separation, testis weight, testicular histology, sperm count, daily sperm production, sperm motility, sperm morphology and reproductive capacity of F1 offspring.
Conclusion: Exposure of Sprague-Dawley rats to a 60 Hz EMF at field strengths of up to 500 μT from day 6 of gestation to day 21 of lactation did not produce any detectable alterations in offspring spermatogenesis and fertility.
Keywords: spermatogenesis, electromagnetic fields, prenatal exposure, postnatal exposure, rat
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