ArticleExperimental gerontology2015
Role of TrkB kinase activity in aging diaphragm neuromuscular junctions.
Article in Experimental gerontology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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Who cites it
34 citing papers in PubMed, 39 citations in OpenAlex.
- Presynaptic compensation sustains neuromuscular transmission in the mouse diaphragm at a late stage of aging.Biogerontology · 2026Article
- p75 neurotrophin receptor preserves neuromuscular synapse stability and muscle strength during aging.npj aging · 2026Article
- Motor Neuron Size-Dependent Differences in mRNA Expression of Tropomyosin-Related Kinase Receptor B in Adult Rats.Journal of neurochemistry · 2026Article
- Mechanisms Underlying Muscle-Related Diseases and Aging: Insights into Pathophysiology and Therapeutic Strategies.Muscles (Basel, Switzerland) · 2025Review
- Chloroquine Causes Aging-like Changes in Diaphragm Neuromuscular Junction Morphology in Mice.Cells · 2025Article
- Inhibition of TrkB kinase activity impairs autophagy in cervical motor neurons of young but not old mice.Experimental physiology · 2025Article
- Functional and Structural Changes in Diaphragm Neuromuscular Junctions in Early Aging.International journal of molecular sciences · 2024Article
- Chloroquine impairs maximal transdiaphragmatic pressure generation in old mice.Journal of applied physiology (Bethesda, Md. : 1985) · 2023Article
- Electrophysiological effects of BDNF and TrkB signaling at type-identified diaphragm neuromuscular junctions.Journal of neurophysiology · 2023Article
- Structure and Function of the Mammalian Neuromuscular Junction.Comprehensive Physiology · 2022Article
- A neuromuscular perspective of sarcopenia pathogenesis: deciphering the signaling pathways involved.GeroScience · 2022Article
- Brain derived neurotrophic factor/tropomyosin related kinase B signaling impacts diaphragm neuromuscular transmission in a novel rat chemogenetic model.Frontiers in cellular neuroscience · 2022Article
- Skeletal muscle-specific calpastatin overexpression mitigates muscle weakness in aging and extends life span.Journal of applied physiology (Bethesda, Md. : 1985) · 2021Article
- Electrical epidural stimulation of the cervical spinal cord: implications for spinal respiratory neuroplasticity after spinal cord injury.Journal of neurophysiology · 2021Review
- Acute intrathecal BDNF enhances functional recovery after cervical spinal cord injury in rats.Journal of neurophysiology · 2021Article
- Secondary denervation is a chronic pathophysiologic sequela of volumetric muscle loss.Journal of applied physiology (Bethesda, Md. : 1985) · 2021Article
- Running and Swimming Differently Adapt the BDNF/TrkB Pathway to a Slow Molecular Pattern at the NMJ.International journal of molecular sciences · 2021Article
- TrkB signaling contributes to transdiaphragmatic pressure generation in aged mice.Journal of neurophysiology · 2021Article
- Lifelong Ulk1-Mediated Autophagy Deficiency in Muscle Induces Mitochondrial Dysfunction and Contractile Weakness.International journal of molecular sciences · 2021Article
- Age-related impairment of autophagy in cervical motor neurons.Experimental gerontology · 2021Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Brain derived neurotrophic factor (BDNF) acting through the tropomyosin-related kinase receptor B (TrkB) enhances neuromuscular transmission in the diaphragm muscle of adult mice, reflecting presynaptic effects. With aging, BDNF enhancement of neuromuscular transmission is lost. We hypothesize that disrupting BDNF/TrkB signaling in early old age will reveal a period of susceptibility evident by morphological changes at neuromuscular junctions (NMJ). Adult, male TrkB(F616A) mice (n=25) at 6 and 18 months of age, were used to examine the structural properties of diaphragm muscle NMJs (n=1097). Confocal microscopy was used to compare pre- and post-synaptic morphology and denervation following a 7 day treatment with the phosphoprotein phosphatase-1 derivative 1NMPP1, which inhibits TrkB kinase activity in TrkB(F616A) mice vs. vehicle treatment. In early old age (18 months), presynaptic terminal volume decreased compared to 6 month old diaphragm NMJs (~20%). Inhibition of TrkB kinase activity significantly decreased the presynaptic terminal volume (~20%) and motor end-plate 2D planar area (~10%), independent of age group. Inhibition of TrkB kinase activity in early old age significantly reduced overlap of pre- and post-synaptic structures and increased the proportion of denervated NMJs (to ~20%). Collectively these results support a period of susceptibility in early old age when BDNF/TrkB signaling at diaphragm NMJs supports the maintenance of NMJs structure and muscle innervation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.