Why the study?
The temporal and spatial expression pattern of Kir4.1 mRNA in the embryonic rat brain was not well characterized.
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The levels and cellular localization of the mRNA encoding the inwardly rectifying potassium ion channel Kir4.1 were investigated in the embryonic rat brain by Northern blots and in situ hybridization. This transcript was absent at embryonic day 13 (E13), whereas it was clearly present in E14-15 preparations, principally in the neuroepithelium of the cerebral cortex, thalamus, and hypothalamus. At later embryonic stages (E17-20), Kir4.1 mRNA levels increased and expanded to the mantle zone, such as the cortical plate, hippocampus, thalamus, and hypothalamus. The early appearance of Kir4.1 mRNA in various brain regions suggests an involvement of the channel in cell proliferation, migration and differentiation in the rat CNS.
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Ma et al. (1998) studied Embryonic rat brain development. Kir4.1 mRNA expression was evaluated on Levels and cellular localization of Kir4.1 mRNA.
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