The DOI matches its Crossref record; 50 of the 51 references it cites were found in a registry or an index.
Fragile X mouse: strain effects of knockout phenotype and evidence suggesting deficient amygdala function
Abstract
Fragile X syndrome is an X-linked form of mental retardation resulting from the absence of expression of the fragile X mental retardation 1 gene. The encoded protein is a ribosome-associated, RNA-binding protein thought to play a role in translational regulation of selective messenger RNA transcripts. A knockout mouse has been described that exhibits subtle deficits in spatial learning but normal early-phase long-term potentiation. We expanded these studies by examination of late-phase hippocampal long-term potentiation, the protein synthesis-dependent form of long-term potentiation, in the Fmrl knockout mice. Here, late-phase long-term potentiation was normal, suggesting either that absence of fragile X mental retardation protein has no influence on long-term potentiation or that any influence is too subtle to be detected by this technique. Alternatively, the hippocampus may not be the primary site affected by the absence of this protein. Accordingly, we examined spatial learning in the knockout mice using the hippocampus-dependent Morris water maze. Contrary to earlier reports, near-normal performance was observed. Since the knockout line used in this study has been back-crossed to C57BL/6 for more than 15 generations, whereas the line used in the earlier studies contained a substantial strain 129 contribution, we examined F1 siblings of knockout and 129 crosses. Here, significant but subtle increased swim latencies in reversal trials were observed, in agreement with the previous studies. These data suggest strain differences between C57BL/6 and 129 that influence the Fmrl knockout phenotype. In order to investigate a paradigm less dependent on hippocampal function, the knockout mice were examined using the conditional fear paradigm. Here, the knockout animals displayed significantly less freezing behavior than their wild-type littermates following both contextual and conditional fear stimuli. These data suggest that amygdala disturbances may also be involved in fragile X syndrome.
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“By most accounts Fmr1 KO mice appear to have relatively normal behavior, but research has shown that the behavioral and cognitive deficits of the KO are actually quite subtle and parallel FXS patients (Berry-Kravis et al., 2002; D’Hooge et al., 1997; Paradee et al., 1999; Peier et al., 2000).”
From Oxytocin and vasopressin systems in genetic syndromes and neurodevelopmental disorders (2014) · cites this paper as Paradee et al., 1999
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Cites
Verkerk, A. J. M. H., Pieretti, M., Sutcliffe, J. S., Fu, Y.-H., Kuhl, D. P. A., Pizzuti, A., Reiner, O., Richards, S., Victoria, M. F., Zhang, F., et al. (1991) · Cell · doi:10.1016/0092-8674(91)90397-h · Cited by 3,481
Self-citationDifferential contribution of amygdala and hippocampus to cued and contextual fear conditioning.
Phillips, R. G., & LeDoux, J. E. (1992) · Behavioral Neuroscience · doi:10.1037/0735-7044.106.2.274 · Cited by 3,292
Spatial localization does not require the presence of local cues
Morris, R. G. M. (1981) · Learning and Motivation · doi:10.1016/0023-9690(81)90020-5 · Cited by 2,699
Synaptic tagging and long-term potentiation
Frey, U., & Morris, R. G. M. (1997) · Nature · doi:10.1038/385533a0 · Cited by 1,736
LeDoux, J. E. (1995) · Annual Review of Psychology · doi:10.1146/annurev.ps.46.020195.001233 · Cited by 1,646
Instability of a 550-Base Pair DNA Segment and Abnormal Methylation in Fragile X Syndrome
Oberlé, I., Rousseau, F., Heitz, D., Kretz, C., Devys, D., Hanauer, A., Boué, J., Bertheas, M. F., & Mandel, J. L. (1991) · Science · doi:10.1126/science.252.5009.1097 · Cited by 1,499
Absence of expression of the FMR-1 gene in fragile X syndrome
Pieretti, M., Zhang, F., Fu, Y.-H., Warren, S. T., Oostra, B. A., Caskey, C. T., & Nelson, D. L. (1991) · Cell · doi:10.1016/0092-8674(91)90125-i · Cited by 1,476
Deficient Hippocampal Long-Term Potentiation in α-Calcium-Calmodulin Kinase II Mutant Mice
Silva, A. J., Stevens, C. F., Tonegawa, S., & Wang, Y. (1992) · Science · doi:10.1126/science.1378648 · Cited by 1,472
Short-Term Synaptic Plasticity
Zucker, R. S. (1989) · Annual Review of Neuroscience · doi:10.1146/annurev.ne.12.030189.000305 · Cited by 1,450
Crawley, J. N., Belknap, J. K., Collins, A. C., Crabbe, J. C., Frankel, W. N., Henderson, N. D., HITZEMANN, R. J., Maxson, S. C., Miner, L. L., Silva, A. J., et al. (1997) · Psychopharmacology · doi:10.1007/s002130050327 · Cited by 1,372
Research works printed but not linked: 4
- Hagerman R. (1998) Clinical and diagnostic aspects of fragile X syndrome. In Genetic Instabilities and Hereditary Neurological Diseases (eds Wells R. D. and Warren S. T.), pp. 15–25. Academic, San Diego.
- Imbert G., Feng Y., Nelson D. L., Warren S. T. and Mandel J.-L. (1998) FMR1 and mutations in fragile X syndrome: molecular biology, biochemistry and genetics. In Genetic Instabilities and Hereditary Neurological Diseases (eds Wells R. D. and Warren S. T.), pp. 27–53. Academic, San Diego.
- Kooy, 1996, Transgenic mouse model for the fragile X syndrome, Am. J. Med. Genet., 64, 241, 10.1002/(SICI)1096-8628(19960809)64:2<241::AID-AJMG1>3.0.CO;2-X · DOI
- Oostra B. A. and Willems P. J. (1998) Murine model of fragile X syndrome. In Genetic Instabilities and Hereditary Neurological Diseases (eds Wells R. D. and Warren S. T.), pp. 55–62. Academic, San Diego.
Cited by
Sorted by citations
Applications of the Morris water maze in the study of learning and memory
D’Hooge, R., & Deyn, P. P. D. (2001) · Brain Research Reviews · doi:10.1016/s0165-0173(01)00067-4 · Cited by 2,083
The mGluR theory of fragile X mental retardation
Bear, M. F., Huber, K. M., & Warren, S. T. (2004) · Trends in Neurosciences · doi:10.1016/j.tins.2004.04.009 · Cited by 1,580
Self-citationTrinucleotide Repeat Disorders
Orr, H. T., & Zoghbi, H. Y. (2007) · Annual Review of Neuroscience · doi:10.1146/annurev.neuro.29.051605.113042 · Cited by 1,394
Altered synaptic plasticity in a mouse model of fragile X mental retardation
Huber, K. M., Gallagher, S. M., Warren, S. T., & Bear, M. F. (2002) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.122205699 · Cited by 1,349
Molecular Mechanisms of Fragile X Syndrome: A Twenty-Year Perspective
Santoro, M. R., Bray, S. M., & Warren, S. T. (2012) · Annual Review of Pathology: Mechanisms of Disease · doi:10.1146/annurev-pathol-011811-132457 · Cited by 528
Metadata
- Authors
- Paradee, W., Melikian, H. E., Rasmussen, D. L., Kenneson, A., Conn, P. J., & Warren, S. T.
- Affiliations
- Howard Hughes Medical Institute (US)
- Emory University (US)
- Corresponding author
- Warren, S.T.
- Venue
- Neuroscience
- Publisher
- Elsevier BV
- Published
- 1999-09
- Volume
- 94
- Issue
- 1
- Pages
- 185-192
- ISSN
- 0306-4522 (ISSN-L)
- OpenAlex
- W2110871941
- Cited by
- 305
- References
- 51
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 5 · 2023: 7 · 2022: 4 · 2021: 5 · 2020: 9 · 2019: 15 · 2018: 11 · 2017: 17 · 2016: 5 · 2015: 14 · 2014: 19 · 2013: 16 · 2012: 15
- FWCI
- 4.77
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (R37 HD20521, P01 HD35576, R37HD020521, P01HD035576)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Keywords
- fragile X syndrome, Fmr1 knockout mice, FMRP, amygdala, contextual fear, spatial learning, hippocampal long-term potentiation, strain differences, C57BL/6 mice, 129 mice, freezing behavior, translational regulation
- MeSH terms
- Amygdala, Animals, Conditioning, Psychological, Electrophysiology, Fear, Female, Fragile X Syndrome, Genotype, Hippocampus, Male, Mice, Inbred C57BL, Nerve Tissue Proteins, Phenotype, Spatial Behavior, RNA-Binding Proteins, Long-Term Potentiation, Mice, Knockout, Maze Learning, Mice, Fragile X Mental Retardation Protein, Fragile X Messenger Ribonucleoprotein 1
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