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《Journal of Jilin University of (Medicine Edition)》 2005-02
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Influences of intense infrasound on ultrastructures of hair cells of cochlea in guinea pigs

ZHANG Gui-ru~1, DU Bao-dong~1, WANG Xiao-ming~2,WANG Hai-tao~1,Sun Le~1 (1. Department of Otolaryngology and Head-Neck Surgery, First Hospital, Jilin University, Changchun 130021,China;2. Department of Laboratory, First Hospital,Jilin University, Changchun 130021,China)  
Objective To study the influences of intense infrasound on the ultrastructural changes of the hair cells of cochlea in guinea pigs with electron microscope. Methods Thirty guinea pigs were randomly divided into five groups: control group and 4 experimental groups. The guinea pigs in experimental groups were individually exposed to 8 Hz, 12 Hz, 120 dB SPL, and 130 dB SPL in a reverberant chamber. The animals were scarified for 5 h, once a day for 4 consecutive days. The influences of intense infrasound on the ultrastructural changes of hair cells of cochlea in guinea pigs were observed by transmission electron microscope. Results The hair cells of cochlea in all experimental groups were damaged to different extent including mitochondrion denaturation, nucleus expansion, and karyopyknosis. The outer hair cells were damaged remarkably, but inner hair cells were nomal; the hair cells in 130 dB SPL group were significantly damaged compared with 120 dB SPL group. There was no difference of damage of hair cells between 12 Hz group and 8 Hz group. Conclusion The intense infrasound can cause damages with different extent to the ultrastructures of hair cells of cochlea in guinea pigs.
【Fund】: 国家自然科学基金资助课题 (39770 6 4 1)
【CateGory Index】: R764
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【Citations】
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5 ZHANG Yuan-Ju 1 ,CHEN Jing-Zao 1 ,LI Ling 1 ,MU Xiang 1 ,WANG Bin 1 ,LIU Jing 1 ,YANG Jun-Feng 2 1 Department of Physiotherapy & Rehabilitation,Xijing Hospital,Fourth Military Medical University,Xi'an 710033,China, 2 Department of Physiotherapy & Rehabilitation,Nanfang Hospital, First Military Medical University,Guangzhou 510000,China;Therapeutic effects of curcumin on memory function damage and cerebral ultrastructure in mice after infrasound exposure[J];Journal of The Fourth Military Medical University;2005-04
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7 GAO Liu-Cun~1, CHEN Cai-Yun~1, ZHOU Peng~2, CHEN Jing-Zao~3, SHU Qing~2 ~1Team 16, Department of Stomatology, ~2Department of Medical Genetics and Developmental Biology, School of Basic Medicine, ~3Infrasound Lab, Xijing Hospital, Fourth Military Medical University, Xi'an 710033, China;Effects of infrasound on DNA CpG methylation of testicular cells in male mice[J];Journal of the Fourth Military Medical University;2006-21
8 MOU Xiang1,YUAN Hua1,LI Ling2,LIU Jing1,GE Xue-Song1,QU Li-Li1,CHEN Jing-Zao1 1Department of Physiotherapy and Rehabilitation,Xijing Hospital,Fourth Military Medical University,Xi’an 710033,China,2Department of Physiotherapy and Rehabilitation,First Affiliated Hospital of PLA General Hospital,Beijing 100037,China;Measurement of infrasound in running cars and trains[J];Journal of the Fourth Military Medical University;2008-06
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