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- W2022119189 abstract "The Ca2+-binding proteins parvalbumin (Mr= 12K) and calbindin D28K [previously designated vitamin D-dependent Ca2+-binding protein (Mr= 28K)] are neuronal markers, but their functional roles in mammalian brain are unknown. The expression of these two proteins was studied by immunocytochemical methods in serum-free cultures of hypothalamic cells from 16-day-old fetal mice. Parvalbumin is first detected in all immature neurons, but during differentiation, the number of parvalbumin-immunoreactive neurons greatly declines to a level reminiscent of that observed in vivo, where only a subpopulation of neurons stains for parvalbumin. In contrast, calbindin D28K was expressed throughout the period investigated only in a distinct subpopulation of neurons. Depolarization of fully differentiated hypothalamic neurons in culture resulted in a dramatic decrease of parvalbumin immunoreactivity but not of calbindin D28K immunoreactivity. The parvalbumin staining was restored on repolarization. Because the anti-parvalbumin serum seems to recognize only the metal-bound form of parvalbumin, the loss of immunoreactivity may signal a release of Ca2+ from intracellular parvalbumin during depolarization of the cells. We suggest that parvalbumin might be involved in Ca2+-dependent processes associated with neurotransmitter release." @default.
- W2022119189 created "2016-06-24" @default.
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- W2022119189 date "1987-08-01" @default.
- W2022119189 modified "2023-09-25" @default.
- W2022119189 title "Developmental and Functional Studies of Parvalbumin and Calbindin D28Kin Hypothalamic Neurons Grown in Serum-Free Medium" @default.
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- W2022119189 doi "https://doi.org/10.1111/j.1471-4159.1987.tb02885.x" @default.
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