ArticleThe Journal of general physiology2022
Nerve-dependent distribution of subsynaptic type 1 inositol 1,4,5-trisphosphate receptor at the neuromuscular junction.
Article in The Journal of general physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 2 citations in OpenAlex.
- Acute mitochondrial dysfunction impairs neuromuscular transmission and contractility in mouse diaphragm: the protective potential of 25-hydroxycholesterol.Journal of physiology and biochemistry · 2026Article
- Finite element modeling of sarcoplasmic reticular intraluminal CaFrontiers in physiology · 2026Article
- Early Alterations in Structural and Functional Properties in the Neuromuscular Junctions of Mutant FUS Mice.International journal of molecular sciences · 2023Article
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Authors and funding
17 authors at 4 institutions in 2 countries.
Funding
Abstract
Inositol 1,4,5-trisphosphate receptors (IP3Rs) are enriched at postsynaptic membrane compartments of the neuromuscular junction (NMJ), surrounding the subsynaptic nuclei and close to nicotinic acetylcholine receptors (nAChRs) of the motor endplate. At the endplate level, it has been proposed that nerve-dependent electrical activity might trigger IP3-associated, local Ca2+ signals not only involved in excitation-transcription (ET) coupling but also crucial to the development and stabilization of the NMJ itself. The present study was undertaken to examine whether denervation affects the subsynaptic IP3R distribution in skeletal muscles and which are the underlying mechanisms. Fluorescence microscopy, carried out on in vivo denervated muscles (following sciatectomy) and in vitro denervated skeletal muscle fibers from flexor digitorum brevis (FDB), indicates that denervation causes a reduction in the subsynaptic IP3R1-stained region, and such a decrease appears to be determined by the lack of muscle electrical activity, as judged by partial reversal upon field electrical stimulation of in vitro denervated skeletal muscle fibers.
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