More specifically, in the 2001 review it was observed that 80% of the studies revealed enlarged lateral ventricles, 73% revealed enlarged third ventricles, and there was a preferential involvement of medial temporal lobe structures (74%) that included amygdala, hippocampus, parahippocampal gyrus, and neocortical temporal lobe structures, ie, superior temporal gyrus (100% if gray
and white matter were differentiated), and moderate Inhibitors,research,lifescience,medical evidence for frontal lobe involvement (59% of studies), most notably prefrontal cortex and orbitofrontal cortex. Other brain regions involved, and reported in this earlier review, included parietal lobe abnormalities (60% of studies), particularly inferior parietal lobule, which includes supramarginal Inhibitors,research,lifescience,medical gyrus and angular gyrus. Other findings included subcortical abnormalities, including cavum septum pellucidum (92% of studies), basal ganglia (68% of studies), corpus callosum (63% of studies), thalamus (42% of studies), and cerebellum (31% of studies). These numbers have not changed
appreciably with the increase in MRI studies since 2001, but they do highlight the fact that there are multiple focal brain regions that are abnormal in schizophrenia, Inhibitors,research,lifescience,medical which are not necessarily proximal but which may nonetheless be involved in brain circuits that are abnormal in schizophrenia. Moreover, and as was noted in the 2001 review, the timing of these abnormalities is still not known, although more recent studies, reviewed below, suggest that changes occur over time, particularly soon after onset of illness, Inhibitors,research,lifescience,medical and these changes may also be evident before the onset of symptoms (ie, in the prodrome period). Abnormalities are also observed, albeit in a more attenuated form, in family members of patients with schizophrenia. The question, then, as noted above, and Inhibitors,research,lifescience,medical as noted by Harrison,31 is thus not whether there are brain abnormalities
in schizophrenia, as this is clearly confirmed. The question is rather “what sort of brain disorder is schizophrenia? Is it static? Is it progressive?” Further, if brain abnormalities change over time, does this necessarily mean that Pomalidomide solubility dmso schizophrenia Mephenoxalone is a neurodegenerative disorder, or is it more likely that schizophrenia is associated with the unfolding of neurodevelopmental processes, which may show progression over time? Perhaps, for example, changes over time suggest abnormalities in brain maturation or a developmental lesion, which in some cases is limited but in other cases takes on a more neurodegenerative course, as postulated in the early part of the twentieth century by Kraepelin.
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