| Autor: |
Matthew D. Puhl, Dionyssios Mintzopoulos, J. Eric Jensen, Timothy E. Gillis, Glenn T. Konopaske, Marc J. Kaufman, Joseph T. Coyle |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Neurobiology of Disease, Vol 73, Iss , Pp 269-274 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1095-953X |
| DOI: |
10.1016/j.nbd.2014.10.009 |
| Popis: |
Background: Decreased availability of the N-methyl-d-aspartate receptor (NMDAR) co-agonist d-serine is thought to promote NMDAR hypofunction and contribute to the pathophysiology of schizophrenia, including neuroanatomical abnormalities, such as cortical atrophy and ventricular enlargement, and neurochemical abnormalities, such as aberrant glutamate and γ-aminobutyric acid (GABA) signaling. It is thought that these abnormalities directly relate to the negative symptoms and cognitive impairments that are hallmarks of the disorder. Because of the genetic complexity of schizophrenia, animal models of the disorder are extremely valuable for the study of genetically predisposing factors. Our laboratory developed a transgenic mouse model lacking serine racemase (SR), the synthetic enzyme of d-serine, polymorphisms of which are associated with schizophrenia. Null mutants (SR−/−) exhibit NMDAR hypofunction and cognitive impairments. We used 9.4 T magnetic resonance imaging (MRI) and proton spectroscopy (MRS) to compare in vivo brain structure and neurochemistry in wildtype (WT) and SR−/− mice. Methods: Mice were anesthetized with isoflurane for MRI and MRS scans. Results: Compared to WT controls, SR−/− mice exhibited 23% larger ventricular volumes (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect