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Test-retest reliability of prepulse inhibition (PPI) and PPI correlation with working memory. Acta Neuropsychiatr 2022; 34:344-353. [PMID: 35959694 DOI: 10.1017/neu.2022.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Sensorimotor gating is experimentally operationalized by the prepulse inhibition (PPI) of the startle response (SR). Previous studies suggest high test-retest reliability of PPI and potential correlation with working memory (WM). Here, we aimed to validate and extend the test-retest reliability of PPI in healthy humans and its correlation with WM performance. METHODS We applied an acoustic startle PPI paradigm with four different prepulse intensities (64, 68, 72 and 76 dB) and two different WM tasks [n-back, change detection task (CDT)] in a group of 26 healthy adults (final sample size n = 23). To assess test-retest reliability, we performed all tests on two separate days ~27 days (range: 21-32 days) apart. RESULTS We were able to confirm high test-retest reliability of the PPI with a mean intraclass correlation (ICC) of > 0.80 and significant positive correlation of PPI with n-back but not with CDT performance. Detailed analysis showed that PPI across all prepulse intensities significantly correlated with both the 2-back and 0-back conditions, suggesting regulation by cross-conditional processes (e.g. attention). However, when removing the 0-back component from the 2-back data, we found a specific and significant correlation with WM for the 76-dB PPI condition. CONCLUSION With the present study, we were able to confirm the high test-retest reliability of the PPI in humans and could validate and expand on its correlation with WM performance.
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Sichler ME, Löw MJ, Schleicher EM, Bayer TA, Bouter Y. Reduced Acoustic Startle Response and Prepulse Inhibition in the Tg4-42 Model of Alzheimer's Disease. J Alzheimers Dis Rep 2019; 3:269-278. [PMID: 31867566 PMCID: PMC6918877 DOI: 10.3233/adr-190132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Sensorimotor deficits have been described in several neuropsychiatric disorders including Alzheimer’s disease. The aim of the present study was to evaluate possible sensorimotor gating deficits in the Tg4-42 mouse model of Alzheimer’s disease using the prepulse inhibition task (PPI). Previous studies indicated that the hippocampus is essentially involved in the regulation of PPI. We analyzed 7-month-old homozygous Tg4-42 mice as mice at this age display severe neuron loss especially in the CA1 region of the hippocampus. Our results revealed a reduced startle response and PPI in Tg4-42 mice. The observed deficits in startle response and PPI are likely due to altered sensory processing abilities rather than hearing deficits as Tg4-42 displayed intact hearing in the fear conditioning task. The present study demonstrates for the first time that sensorimotor gating is impaired in Tg4-42 mice. Analyzing startle response as well as the PPI may offer valuable measurements to assess the efficacy of therapeutic strategies in the future in this Alzheimer’s disease model.
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Affiliation(s)
- Marius E Sichler
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Goettingen (UMG), Georg-August-University, Goettingen, Germany
| | - Maximilian J Löw
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Goettingen (UMG), Georg-August-University, Goettingen, Germany
| | - Eva M Schleicher
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Goettingen (UMG), Georg-August-University, Goettingen, Germany
| | - Thomas A Bayer
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Goettingen (UMG), Georg-August-University, Goettingen, Germany
| | - Yvonne Bouter
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Goettingen (UMG), Georg-August-University, Goettingen, Germany
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Li Q, Zheng J, Xu S, Zhang J, Cao Y, Qin Z, Liu X, Jiang C. The neurotoxicity induced by PM 2.5 might be strongly related to changes of the hippocampal tissue structure and neurotransmitter levels. Toxicol Res (Camb) 2018; 7:1144-1152. [PMID: 30510684 PMCID: PMC6220725 DOI: 10.1039/c8tx00093j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/03/2018] [Indexed: 11/21/2022] Open
Abstract
Objective: The complex components of PM2.5 including metal elements transported through the blood brain barrier could induce nervous system damage. This study discusses the relationship between rats' learning and memory and changes in the hippocampal neuron histomorphology and neurotransmitter levels induced by PM2.5 exposure. Methods: Male rats were treated with different concentrations of PM2.5 by tracheal perfusion once per week for up to 12 weeks. After the rats were sacrificed, the main metal element contents (Al, Pb, Cu, Mn, As, Cr, Cd, and Ni) of the blood and whole hippocampus, levels of neurotransmitters released in the whole hippocampus and relative receptors, and changes in the hippocampal structure were detected. Results: The results showed that PM2.5 significantly reduced the cognitive learning abilities of rats. PM2.5 exposure increased the contents of hippocampal lead, manganese, and aluminum. The level of glutamic acid was increased in the hippocampal tissues of the 20 mg kg-1 group, in combination with the decreased N-methyl-d-aspartate glutamate receptor (NMDAR) and increased metabotropic glutamate receptor type1 (mGluR1) expression. Increased clearance, a mild disorder of arrangement, and mild edema could be observed in the rat hippocampal neurons treated with PM2.5. Conclusion: PM2.5-induced defects in learning and memory may be related to the morphological abnormalities of the hippocampus and the abnormal expression of neurotransmitters and their receptors.
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Affiliation(s)
- Qingzhao Li
- School of Public Health , North China University of Science and Technology , 57 Jianshe Road , Tangshan 063000 , Hebei , People's Republic of China
| | - Jiali Zheng
- Department of Neurology , The People's Hospital of Pingliang , 79 East street , Pingliang 744000 , Gansu , People's Republic of China
| | - Sheng Xu
- Department of Neurosurgery , Tangshan People's Hospital , 65 Shengli Road , Tangshan 063001 , Hebei , People's Republic of China
| | - Jingshu Zhang
- The Center for Hygienic Analysis and Detection , Nanjing Medical University , 101 LongMian Avenue , Jiangning District , Nanjing 211166 , People's Republic of China
| | - Yanhua Cao
- School of Public Health , North China University of Science and Technology , 57 Jianshe Road , Tangshan 063000 , Hebei , People's Republic of China
| | - Zhenlong Qin
- Department of Anesthesiology , Beijing University of Chinese Medicine Third Affiliated Hospital , No 51 Xiaoguan Street , Anwai , Chaoyang District , Beijing 100029 , People's Republic of China . ; ; Tel: +86 10 52075429
| | - Xiaoqin Liu
- Department of Nephrology , Hongqi Hospital , Mudanjiang Medical College , 5 Tongxiang Road , Aimin District , Mudanjiang 157011 , Heilongjiang , People's Republic of China . ; ; Tel: +86 453 6582800
| | - Chunyang Jiang
- Department of Thoracic Surgery , Tianjin Union Medical Center , 190 Jieyuan Road , Hongqiao District , Tianjin 300121, Tianjin , People's Republic of China . ; ; Tel: +86 22 27557493
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Wolfrum C, Peleg-Raibstein D. Maternal overnutrition leads to cognitive and neurochemical abnormalities in C57BL/6 mice. Nutr Neurosci 2018; 22:688-699. [DOI: 10.1080/1028415x.2018.1432096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Christian Wolfrum
- Laboratory of Translational Nutrition Biology, ETH Zurich, Schwerzenbach, Switzerland
| | - Daria Peleg-Raibstein
- Laboratory of Translational Nutrition Biology, ETH Zurich, Schwerzenbach, Switzerland
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Yoshizaki K, Koike K, Kimura R, Osumi N. Early postnatal vocalizations predict sociability and spatial memory in C57BL/6J mice: Individual differences in behavioral traits emerge early in development. PLoS One 2017; 12:e0186798. [PMID: 29091920 PMCID: PMC5665508 DOI: 10.1371/journal.pone.0186798] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/06/2017] [Indexed: 12/30/2022] Open
Abstract
The understanding of individual diversity and its link to brain functions is a fundamental issue in neurobiology. Studies in mice have mainly focused on the investigation of behavior traits in adulthood, whereas longitudinal analyses are largely uninvestigated. Here we have conducted systematic behavior tests in individual mice (C57BL6/J, male), comparing phenotypes at early postnatal stages and in adulthood. Each animal showed different scores in individual behavior tests. However, we observed an inverse correlation between repetitive behavior in the Morris water maze test and sociability in the 3-chamber social interaction test; an increase in repetitive behaviors was associated with poor sociability. In longitudinal analyses, the emission of ultrasonic vocalization during maternal separation at postnatal day 6 in pups was correlated positively with sociability and negatively with spatial memory. Our results show a possibility that individual differences in communication between pups and their mother in infancy is a predictive indicator for sociability and cognitive performance as an adult.
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Affiliation(s)
- Kaichi Yoshizaki
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Pathology, Institute for Developmental Research, Aichi Human Service Center, Aichi, Japan
| | - Kohei Koike
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Physiology, Center for Integrative Physiology and Molecular Medicine, Saarland University School of Medicine, Homburg, Germany
| | - Ryuichi Kimura
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Noriko Osumi
- Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- * E-mail:
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