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Deranged Ca 2+ signaling and an accumulation of aberrant proteins cause endoplasmic reticulum (ER) stress, which is a hallmark of cell death implicated in many neurodegenerative diseases. However, the underlying mechanisms are elusive. Here, we report that dysfunction of an ER-resident Ca 2+ channel, inositol 1,4,5-trisphosphate receptor (IP 3 R), promotes cell death during...
Increases in postsynaptic [Ca2+]i can result from Ca2+ entry through ligand-gated channels or voltage-gated Ca2+ channels, or through release from intracellular stores. Most attention has focused on entry through the N-methyl-D-aspartate (NMDA) receptor in causing [Ca2+]i increases since this pathway requires both presynaptic stimulation and postsynaptic depolarization, making it a central component...
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