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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yuan, Liang Wu, Jing Liu, Jiang Li, Guowei Liang, Dong |
| Copyright Year | 2015 |
| Abstract | Obstructive sleep apnea usually contribute to psychiatric diseases and cognitive impairments in adults. Loss of parvalbumin (PV)-immunoreactive interneurons (PV-IN) in the brain cortex is an important feature of psychiatric diseases, such as schizophrenia. Here we investigate the causal contribution of oxidative stress in the brain cortex to neuropathological alterations in a mouse model of sleep apnea. Wild-type (WT) and the NADPH-oxidase-2 (gp91-phox/NOX2) knock-out adult male C57BL/6J mice were exposed to intermittent hypoxia (IH) or standard room air in the same chamber. In vivo we determined the impact (1) of IH exposures on NOX2 expression, (2) of genetic gp91-phox/NOX2 knock-out and (3) of pharmacological NOX2 inhibition on IH-induced neuropathological alterations in adult mice. Endpoints were oxidative stress, PV-IN and neurobehavioral alterations. The results showed IH exposures increased NOX2 expression in the prefrontal cortex of WT mice, which was accompanied with elevations of indirect markers of oxidative stress (HNE, HIF-1α, 8-OHDG). WT mice showed loss of PV-IN in the prefrontal cortex and increased locomotion activity and anxiety levels after exposed to IH, while no change emerged in NOX2 knock-out mice. Treatment of WT mice with the antioxidant/NOX inhibitor apocynin prevented the neuropathological and neurobehavioral alterations induced by IH exposures. Our data suggest that NOX2-derived oxidative stress is involved in the loss of PV-IN in the prefrontal cortex and development of neurobehavioral alterations for adult mice exposed to IH. These results provide a molecular mechanism for the coupling between sleep apnea and brain oxidative stress as well as potential new therapeutic avenues. |
| Starting Page | 1232 |
| Ending Page | 1242 |
| Page Count | 11 |
| File Format | |
| ISSN | 03643190 |
| Journal | Neurochemical Research |
| Volume Number | 40 |
| Issue Number | 6 |
| e-ISSN | 15736903 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2015-04-25 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Intermittent hypoxia Oxidative stress NADPH-oxidase-2 PV-immunoreactive interneurons Neurobehavioral alterations Neurosciences Neurochemistry Biochemistry Cell Biology Neurology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Biochemistry Cellular and Molecular Neuroscience |
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