PMID- 35066900 OWN - NLM STAT- MEDLINE DCOM- 20220127 LR - 20220531 IS - 1521-186X (Electronic) IS - 0197-8462 (Linking) VI - 43 IP - 2 DP - 2022 Feb TI - Effects of Acute Exposure to 3500 MHz (5G) Radiofrequency Electromagnetic Radiation on Anxiety-Like Behavior and the Auditory Cortex in Guinea Pigs. PG - 106-118 LID - 10.1002/bem.22388 [doi] AB - Numerous studies have shown that radiofrequency electromagnetic radiation (RF-EMR) may negatively affect human health. We detected the effect of 3500 MHz RF-EMR on anxiety-like behavior and the auditory cortex (ACx) in guinea pigs. Forty male guinea pigs were randomly divided into four groups and exposed to a continuous wave of 3500 MHz RF-EMF at an average specific absorption rate (SAR) of 0, 2, 4, or 10 W/kg for 72 h. After exposure, malondialdehyde (MDA) levels, antioxidant enzyme activity, anxiety-like behavior, hearing thresholds, cell ultrastructure, and apoptosis were detected. Our results revealed that hearing thresholds and basic indexes of animal behavior did not change significantly after exposure (P > 0.05). However, the MDA levels of ACx were increased (P < 0.05), and catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH-px) activities were decreased (P < 0.05) in the exposure groups compared to the sham group. Ultrastructural changes of ACx, including swollen mitochondria and layered myelin sheaths, were observed. Cytochrome-c relocalization, caspase-9, and cleaved caspase-3 activation were detected in the exposure groups. In conclusion, these results suggest that oxidative stress is an important mechanism underlying the biological effects of RF-EMR, which can induce ultrastructural damage to the ACx and cell apoptosis through a mitochondria-dependent mechanism. Moreover, oxidative stress, apoptosis induction and ultrastructural damage increase in a SAR-dependent manner. However, RF-EMR does not increase hearing thresholds or induce anxiety. Bioelectromagnetics. 43:106-118, 2022. (c) 2021 Bioelectromagnetics Society. CI - (c) 2021 Bioelectromagnetics Society. FAU - Yang, Honghong AU - Yang H AD - Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. FAU - Zhang, Yuanyuan AU - Zhang Y AD - Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China. FAU - Wu, Xianwen AU - Wu X AD - Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. FAU - Gan, Ping AU - Gan P AD - Department of Dependable Service Computing in Cyber Physical Society, Key Laboratory of the Ministry of Education, Chongqing University, Chongqing, China. FAU - Luo, Xiaoli AU - Luo X AD - Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. FAU - Zhong, Shixun AU - Zhong S AD - Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. FAU - Zuo, Wenqi AU - Zuo W AUID- ORCID: 0000-0002-1109-3500 AD - Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. LA - eng GR - 20180105/The Foundation and Frontier Research Project, Science and Technology Commission, Yuzhong District, Chongqing, China/ GR - 81700916/The National Nature Science Foundation of China/ GR - KJQN201900433/The Science and Technology Research Program of Chongqing Municipal Education Commission/ PT - Journal Article PT - Randomized Controlled Trial, Veterinary DEP - 20220123 PL - United States TA - Bioelectromagnetics JT - Bioelectromagnetics JID - 8008281 RN - 0 (Antioxidants) SB - IM MH - Animals MH - Antioxidants/metabolism MH - Anxiety/etiology MH - *Auditory Cortex/metabolism MH - *Cell Phone MH - Electromagnetic Fields/adverse effects MH - Electromagnetic Radiation MH - Guinea Pigs MH - Male MH - Oxidative Stress OTO - NOTNLM OT - anxiety-like behavior OT - apoptosis OT - auditory cortex OT - oxidative stress OT - radiofrequency electromagnetic radiation EDAT- 2022/01/24 06:00 MHDA- 2022/01/28 06:00 CRDT- 2022/01/23 20:38 PHST- 2021/09/26 00:00 [revised] PHST- 2020/12/04 00:00 [received] PHST- 2022/01/05 00:00 [accepted] PHST- 2022/01/24 06:00 [pubmed] PHST- 2022/01/28 06:00 [medline] PHST- 2022/01/23 20:38 [entrez] AID - 10.1002/bem.22388 [doi] PST - ppublish SO - Bioelectromagnetics. 2022 Feb;43(2):106-118. doi: 10.1002/bem.22388. Epub 2022 Jan 23.