Continuous 900-megahertz electromagnetic field applied in middle and late-adolescence causes qualitative and quantitative changes in the ovarian morphology, tissue and blood biochemistry of the rat
| Autor: | Derya Öztürk Okatan, Selim Demir, Serdar Colakoglu, Ersan Odaci, Haydar Kaya, Yuksel Aliyazicioglu |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Pathology medicine.medical_specialty Guanine Time Factors animal structures H&E stain Mitosis Ovary Body weight ovarium Rats Sprague-Dawley Sham group 03 medical and health sciences Electromagnetic Fields 0302 clinical medicine Trichrome Leukocytes medicine Electromagnetic field Animals Radiology Nuclear Medicine and imaging rat Granulosa Cells Radiological and Ultrasound Technology Blood biochemistry Body Weight Temperature Humidity Organ Size middle and late adolescence Catalase Late adolescence Rats Oxidative Stress 030104 developmental biology medicine.anatomical_structure 8-Hydroxy-2'-Deoxyguanosine Theca Cells 030220 oncology & carcinogenesis Ovarian morphology Tyrosine Female |
| Popis: | Demir, Selim/0000-0002-1863-6280 WOS: 000427080600010 PubMed: 29268055 Purpose: The purpose of this study was to use histological and biochemical methods in order to evaluate changes taking place in the ovarian of rats exposed to the effect of a 900-megahertz (MHz) electromagnetic field (EMF) in middle and late adolescence. Materials and methods: Twenty-four 34-d-old female Sprague-Dawley rats were assigned equally to control, sham and EMF groups. EMF group rats were exposed to the effect of a 900-MHz EMF for 1 h a day, at the same time every day between postnatal days 35 and 59, while inside an EMF cage. Sham group rats were kept inside the EMF cage for the same time between postnatal days 35 and 59 without being exposed to any EMF effect. At the end of the study, rats' ovarian were removed and blood specimens were taken. Right ovarium tissues were subjected to routine histological procedures and stained with hematoxylin and eosin, periodic acid shift and Masson's trichrome. Follicles were counted in ovarian sections stained with hematoxylin and eosin. The TUNEL method was used to evaluate apoptosis. Left ovarian tissue and blood specimens were investigated biochemically. Results: Histopathological examination of EMF group ovarian tissue revealed thinning in the zona granulosa and theca layers, shrinking in granulosa cells, reduced mitotic activity and leukocyte infiltration in the follicles and stroma. Secondary follicle numbers in the EMF group were significantly lower than in the other groups. In terms of biochemistry, EMF and sham group superoxide dismutase, catalase and anti-Mullerian hormone levels and EMF group 3-nitrotyrosine values increased significantly compared to the control group. EMF and sham group serum catalase and 8-hydroxy-deoxiguanosine values increased significantly compared to the control group, and EMF group total oxidant status and oxidative stress index values were significantly higher compared to the sham and control groups. Conclusions: A total of 900-MHz EMF applied in middle and late adolescence may cause changes in the morphology and biochemistry of the rat ovarium. Karadeniz Technical University Research Fund [TTU-2015-5240] This research was supported by the Karadeniz Technical University Research Fund, Project number TTU-2015-5240. |
| Databáze: | OpenAIRE |
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