Brazilië: Degeneratie testes door LF elektromagnetische velden bij ratten.
dinsdag, 05 april 2011 - Categorie: Onderzoeken
Bron: Journal of Applied Toxicology 2011 Mar 30. doi: 10.1002
Evaluation of testicular degeneration induced by low-frequency electromagnetic fields.
Tenorio BM, Jimenez GC, Morais RN, Peixoto CA, Albuquerque Nogueira R, Silva Junior VA.
Department of Animal Morphology and Physiology, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil. firstname.lastname@example.org.
The population exposure to electromagnetic fields (EMF) has been growing in recent decades. The generation, distribution and use of electric energy can generate low-frequency electromagnetic fields. The present study investigates the effects of EMF (60?Hz and 1?mT) on spermatogenesis of rats during different periods of maturation.
Wistar rats were exposed to EMF from day 13 of gestation to postnatal day 21 or 90 in three daily applications of 30?min. Plasma testosterone concentration was not changed by EMF exposure; however, histopathological and histomorphometrical analyses of the testes showed testicular degeneration in a subset of animals exposed to EMF.
The magnitude of the degenerative process varied between those individuals affected, indicating different individual sensitivity to EMF. The main alterations observed through transmission electron microscopy were highly electron-dense mitochondria with loss of their organization and cristae.Exposure to 60?Hz and 1?mT EMF can disturb spermatogenesis and may produce subfertility or infertility.
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