img
Pernicious effects of long term continuous 900 MHz electromagnetic field throughout adolescence on hippocampus morphology biochemistry and pyramidal neuron numbers in 60 day old Sprague Dawley male rats       
Yazarlar
Gökçen Kerimoğlu
Karadeniz Teknik Üniversitesi, Türkiye
Hatice Hancı
Ordu Üniversitesi, Türkiye
Orhan Baş
Ordu Üniversitesi, Türkiye
Ali Aslan
Ordu Üniversitesi, Türkiye
Doç. Dr. Hüseyin Serkan EROL
Atatürk Üniversitesi, Türkiye
Alpgiray Turgut
Haydar Kaya
Karadeniz Teknik Üniversitesi, Türkiye
Soner Çankaya
Ondokuz Mayıs Üniversitesi, Türkiye
Osman Fikret Sönmez
Ersan Odacı
Türkiye
Özet
The central nervous system (CNS) begins developing in the intrauterine period, a process that continues until adulthood. Contact with chemical substances, drugs or environmental agents such as electromagnetic field (EMF) during adolescence therefore has the potential to disturb the development of the morphological architecture of components of the CNS (such as the hippocampus). The hippocampus is essential to such diverse functions as memory acquisition and integration and spatial maneuvering. EMF can result in severe damage to both the morphology of the hippocampus and its principal functions during adolescence. Although children and adolescents undergo greater exposure to EMF than adults, the information currently available regarding the effects of exposure to EMF during this period is as yet insufficient. This study investigated the 60-day-old male rat hippocampus following exposure to 900 megahertz (MHz) EMF throughout the adolescent period using stereological, histopathological and biochemical analysis techniques. Eighteen male Sprague Dawley rats aged 21 days were assigned into control, sham and EMF groups on a random basis. No procedure was performed on the control group rats. The EMF group (EMFGr) was exposed to a 900-MHz EMF for 1 h daily from beginning to end of adolescence. The sham group rats were held in the EMF cage but were not exposed to EMF. All rats were sacrificed at 60 days of age. Their brains were extracted and halved. The left hemispheres were set aside for biochemical analyses and the right hemispheres were subjected to stereological and histopathological evaluation. Histopathological examination revealed increased numbers of pyknotic neurons with black or dark blue cytoplasm on EMFGr slides stained with cresyl violet. Stereological analyses revealed fewer pyramidal neurons in EMFGr than in the other two groups. Biochemical analyses showed an increase in malondialdehyde and glutathione levels, but a decrease in catalase levels in EMFGr. Our results indicate that oxidative stress-related morphological damage and pyramidal neuron loss may be observed in the rat hippocampus following exposure to 900-MHz EMF throughout the adolescent period.
Anahtar Kelimeler
Cell phone | Electromagnetic field | Hippocampus | Male rat | Stereology
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF CHEMICAL NEUROANATOMY
Dergi ISSN 0891-0618
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 11-2016
Cilt No 77
Sayfalar 169 / 175
Doi Numarası 10.1016/j.jchemneu.2016.07.004
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0891061816300758