Activation of endoplasmic reticulum stress in rat brain following low-intensity microwave exposure
2019
Ranjeet Kumar, | Deshmukh, Pravin S. | Sharma, Sonal | Banerjee, BasuDev
The present study was designed to explore the effects of low-intensity microwave radiation on endoplasmic reticulum stress and unfolded protein response. Experiments were performed on male Wistar rats exposed to microwave radiation for 30 days at 900 MHz, 1800 MHz, and 2450 MHz frequencies on four groups of animal: sham-exposed group, 900 MHz exposed (SAR 5.84 × 10⁻⁴ W/kg), 1800 MHz exposed (SAR 5.94 × 10⁻⁴ W/kg), and 2450 MHz exposed (SAR 6.7 × 10⁻⁴ W/kg) groups. Expressions of mRNA were estimated at the end of exposure in rat brain by real-time quantitative PCR. Microwave exposure at 900, 1800, and 2450 MHz with respective SAR values as mentioned above significantly (< 0.05) altered mRNA expression of transcription factors ATF4, CHOP, and XBP1 in accordance with increasing microwave frequency. The result of the present study reveals that low-intensity microwave exposure at frequencies 900, 1800, and 2450 MHz induces endoplasmic reticulum stress and unfolded protein response.
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