{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T13:32:09Z","timestamp":1758807129953},"reference-count":82,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2009,11,2]],"date-time":"2009-11-02T00:00:00Z","timestamp":1257120000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Neuroscience Research"],"published-print":{"date-parts":[[2010,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Perinatal hypoxia affects normal neurological development and can lead to motor, behavioral and cognitive deficits. A common acute treatment for perinatal hypoxia is oxygen resuscitation (hyperoximia), a controversial treatment. Magnetic resonance imaging (MRI), including diffusion tensor imaging (DTI), was performed in a P7 rat model of perinatal hypoxia to determine the effect of hyperoximia. These studies were performed on two groups of animals: 1) animals which were subjected to ischemia followed by hypoxia (HI), and 2) HI followed by hyperoximic treatment (HHI). Lesion volumes on high resolution MRI and DTI derived measures, fractional anisotropy (FA), mean diffusivity (MD), and axial and radial diffusivities (\u03bb<jats:sub>l<\/jats:sub> and \u03bb<jats:sub>t<\/jats:sub>, respectively) were measured in vivo one day, one week, and three weeks after injury. Most significant differences in the MRI and DTI measures were found at three weeks after injury. Specifically, three weeks after HHI injury resulted in significantly larger hyperintense lesion volumes (95.26 \u00b1 50.42 mm<jats:sup>3<\/jats:sup>) compared to HI (22.25 \u00b1 17.62 mm<jats:sup>3<\/jats:sup>). The radial diffusivity \u03bb<jats:sub>t<\/jats:sub> of the genu of corpus callosum was significantly larger in HHI (681 \u00b1 330 \u00d7 10<jats:sup>\u22126<\/jats:sup> mm<jats:sup>2<\/jats:sup>\/sec) than in HI (486 \u00b1 96 \u00d7 10<jats:sup>\u22126<\/jats:sup> mm<jats:sup>2<\/jats:sup>\/sec). Over all, most significant differences in all the DTI metrics (FA, MD, \u03bb<jats:sub>t<\/jats:sub>, \u03bb<jats:sub>l<\/jats:sub>) at all time points were found in the corpus callosum. Our results suggest that treatment of perinatal hypoxia with normobaric oxygen does not ameliorate, but exacerbates damage. \u00a9 2009 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/jnr.22273","type":"journal-article","created":{"date-parts":[[2009,11,2]],"date-time":"2009-11-02T22:15:37Z","timestamp":1257200137000},"page":"1146-1156","source":"Crossref","is-referenced-by-count":12,"title":["Normobaric hyperoximia increases hypoxia\u2010induced cerebral injury: DTI study in 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