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- W2007465976 abstract "The human brainstem is especially susceptible to hypoxia-ischemia in early life. To test the hypothesis that the period of vulnerability of the developing human brainstem to hypoxia-ischemia correlates with a transient elevation in kainate receptor binding, we compared the quantitative distribution of [3H]kainate binding in brainstem nuclei between four fetuses (19-26 gestational weeks), four infants (one to nine months), and three mature individuals (one child and two adults) without neurological disease. Quantitative tissues autoradiography was used. [3H]Kainate binding decreased in all brainstem regions from early life to maturity with the most significant decreases occurring in nuclei thought to be especially vulnerable to perinatal hypoxia-ischemia (e.g. principal inferior olive, griseum pontis, inferior colliculus and reticular core). The highest binding in the fetal and infant period was found primarily in the major cerebellar-relay nuclei. In the inferior olive and arcuate nucleus, binding increased from the fetal to the infant period, and then fell 50-61% to low mature levels. In the griseum pontis, binding decreased 60% between the fetal and mature periods. In the reticular formation, binding fell 67-78% from the fetal to mature period. These data support a correlation between the period of brainstem vulnerability to hypoxia-ischemia in early life to transient elevation in kainate binding, and are particularly relevant to the topographic brainstem patterns in perinatal hypoxia-ischemia of infantile olivary gliosis, pontosubicular necrosis and reticular core damage. Striking localization of [3H]kainate binding to rhombic lip derivatives further suggests that kainate receptors may be involved in the development and function of human brainstem-cerebellar circuitry." @default.
- W2007465976 created "2016-06-24" @default.
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- W2007465976 date "1995-07-01" @default.
- W2007465976 modified "2023-10-18" @default.
- W2007465976 title "Developmental changes in [3H]kainate binding in human brainstem sites vulnerable to perinatal hypoxia-ischemia" @default.
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- W2007465976 doi "https://doi.org/10.1016/0306-4522(95)00016-c" @default.
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