Melatonin modulates wireless (2.45GHz)-induced oxidative injury through TRPM2 and voltage gated Ca 2+ channels in brain and dorsal root ganglion in rat


NAZIROĞLU M., ÇELİK Ö., Özgül C., Çiǧ B., Doǧan S., Bal R., ...Daha Fazla

Physiology and Behavior, cilt.105, sa.3, ss.683-692, 2012 (SCI-Expanded, SSCI, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 105 Sayı: 3
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physbeh.2011.10.005
  • Dergi Adı: Physiology and Behavior
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus
  • Sayfa Sayıları: ss.683-692
  • Anahtar Kelimeler: Ca 2+ influx, Dorsal root ganglion neuron, Electroencephalography records, Melatonin, Oxidative stress, TRPM2 channels, Wireless devices
  • İstanbul Medipol Üniversitesi Adresli: Hayır

Özet

We aimed to investigate the protective effects of melatonin and 2.45GHz electromagnetic radiation (EMR) on brain and dorsal root ganglion (DRG) neuron antioxidant redox system, Ca 2+ influx, cell viability and electroencephalography (EEG) records in the rat. Thirty two rats were equally divided into four different groups namely group A1: Cage control, group A2: Sham control, group B: 2.45GHz EMR, group C: 2.45GHz EMR+melatonin. Groups B and C were exposed to 2.45GHz EMR during 60min/day for 30days. End of the experiments, EEG records and the brain cortex and DRG samples were taken. Lipid peroxidation (LP), cell viability and cytosolic Ca 2+ values in DRG neurons were higher in group B than in groups A1 and A2 although their concentrations were increased by melatonin, 2-aminoethyldiphenyl borinate (2-APB), diltiazem and verapamil supplementation. Spike numbers of EEG records in group C were lower than in group B. Brain cortex vitamin E concentration was higher in group C than in group B. In conclusion, Melatonin supplementation in DRG neurons and brain seems to have protective effects on the 2.45GHz-induced increase Ca 2+ influx, EEG records and cell viability of the hormone through TRPM2 and voltage gated Ca 2+ channels. © 2011 Elsevier Inc.