期刊
EMBO MOLECULAR MEDICINE
卷 4, 期 6, 页码 528-539出版社
WILEY
DOI: 10.1002/emmm.201200230
关键词
anxiety; axonal degeneration; diffusion tensor imaging; low-grade inflammation; social withdrawal
资金
- Max Planck Society
- DFG-Research Center for Molecular Physiology of the Brain (CMPB)
- Bernstein Center for Computational Neuroscience (BCCN) [01GQ0431]
- ERA-Net Neuron [01EW1102]
- ERC
Severe mental illnesses have been linked to white matter abnormalities, documented by postmortem studies. However, cause and effect have remained difficult to distinguish. CNP (2',3'-cyclic nucleotide 3'-phosphodiesterase) is among the oligodendrocyte/myelin-associated genes most robustly reduced on mRNA and protein level in brains of schizophrenic, bipolar or major depressive patients. This suggests that CNP reduction might be critical for a more general disease process and not restricted to a single diagnostic category. We show here that reduced expression of CNP is the primary cause of a distinct behavioural phenotype, seen only upon aging as an additional pro-inflammatory hit. This phenotype is strikingly similar in Cnp heterozygous mice and patients with mental disease carrying the AA genotype at CNP SNP rs2070106. The characteristic features in both species with their partial CNP loss-of-function genotype are best described as catatonia-depression syndrome. As a consequence of perturbed CNP expression, mice show secondary low-grade inflammation/neurodegeneration. Analogously, in man, diffusion tensor imaging points to axonal loss in the frontal corpus callosum. To conclude, subtle white matter abnormalities inducing neurodegenerative changes can cause/amplify psychiatric diseases.
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