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Moossavi A, Lotfi Y, Javanbakht M, Faghihzadeh S. Speech-evoked auditory brainstem response; electrophysiological evidence of upper brainstem facilitative role on sound lateralization in noise. Neurol Sci 2019; 41:611-617. [PMID: 31732889 DOI: 10.1007/s10072-019-04102-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 10/04/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIM Sound lateralization/localization is one of the most important auditory processing abilities, which plays approved role in auditory streaming and speech perception in challenging situations like noisy places. In addition to the main role of lower brainstem centers like superior olivary complex in sound lateralization, efferent auditory system effects on improving auditory skills in everyday auditory challenging positions were revealed. This study evaluated noise effects on lateralization scores in correlation with an objective electrophysiologic test (Speech-ABR in noise), which objectively shows cumulative effects of the afferent and efferent auditory systems at the inferior colliculus and upper brainstem pathway. METHOD Fourteen normal-hearing subjects in the age range of 18 to 25 participated in this study. Lateralization scores in the quiet and noisy modes were evaluated. Speech-ABR in both ears for quiet mode and three different contralateral noise levels (SNR = + 5, 0, - 5) were recorded, too. Correlation of lateralization scores and Speech-ABR changes in noise was studied. RESULTS Significant decrease of lateralization scores with latency increase and amplitude decrease of Speech-ABR transient peaks (V, A, O) was seen with noise presentation. A high positive correlation between lateralization decrease with latency increase of onset peaks (V, A) and amplitude decrease of transient peaks (V, A, O) was found in low signal-to-noise ratios. CONCLUSION The study revealed that in high challenging auditory situations like auditory lateralization in noise, upper brainstem centers and pathways play a facilitative role for main auditory lateralization centers in lower levels.
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Affiliation(s)
- Abdollah Moossavi
- Department of Otolaryngology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Yones Lotfi
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Mohanna Javanbakht
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
| | - Soghrat Faghihzadeh
- Department of Biostatistics and Epidemiology, Zanjan University of Medical Sciences, Zanjan, Iran
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Wang Y, Ma Z, Zheng Y, Liu B, Bao P, Wu X, Yu C, Wen Z, Ma T, Liu J, Liu C, Ma D, Wu H, Li J, Yuan Y, Lu N, Zhao H, Li Y, Yang S, Zhang R, Dai J, Hu M. Establishment of an osteoporosis model in tree shrews by bilateral ovariectomy and comprehensive evaluation. Exp Ther Med 2019; 17:3644-3654. [PMID: 30988748 PMCID: PMC6447825 DOI: 10.3892/etm.2019.7339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 02/14/2019] [Indexed: 12/31/2022] Open
Abstract
Osteoporosis (OP) treatment has always been challenging for elderly menopausal females. An animal model with a closer genetic association to human OP is essential for treatment research. Given its close genetic association to primates, the tree shrew is a suitable candidate for meeting the requirements for such an animal model. In the present study, a tree shrew OP model induced by ovariectomy (OVX), was established. Evaluation by multiple analysis methods, including blood biochemical indicators, uterus coefficients, micro-computed tomography analysis, histochemical analysis and scanning electron microscopic observation indicated that OVX was an appropriate method to establish the OP model in tree shrews. In addition, the biomolecular characteristics of OVX-induced osteoporosis were also assessed by transcriptome sequencing and bioinformatics analysis. The present study provides the methods used to confirm the successful establishment of the OP model in tree shrew, and suggests that the OP model is appropriate for human OP research.
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Affiliation(s)
- Yaolong Wang
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Zhaoxia Ma
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Yuanyuan Zheng
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Baoling Liu
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Pengfei Bao
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Xingfei Wu
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Congtao Yu
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Zhengqi Wen
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Tiekun Ma
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Jinxue Liu
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Change Liu
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Daiping Ma
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Haiying Wu
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Jun Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Yong Yuan
- Department of Orthopaedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Ning Lu
- Department of Orthopaedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Hongbin Zhao
- Department of Orthopaedics, First People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
| | - Yanjiao Li
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
| | - Suping Yang
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China.,Department of Orthopaedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Rongping Zhang
- Department of Pharmacy, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Jiejie Dai
- Center of Tree Shrew Germplasm Resources, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan 650118, P.R. China
| | - Min Hu
- Yunnan Key Laboratory for Basic Research on Bone and Joint Diseases and Yunnan Stem Cell Translational Research Center, Kunming University, Kunming, Yunnan 650214, P.R. China
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