ArticleInternational journal of molecular sciences2024
Functional and Structural Changes in Diaphragm Neuromuscular Junctions in Early Aging.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Acute mitochondrial dysfunction impairs neuromuscular transmission and contractility in mouse diaphragm: the protective potential of 25-hydroxycholesterol.Journal of physiology and biochemistry · 2026Article
- Exhalation-synchronous robotic abdominal compression for user-centered respiratory assistance and training in neurological patients.Journal of neuroengineering and rehabilitation · 2025Article
- Exogenous nanomolar zinc ion (ZnBiometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2025Article
- Molecular Framework of the Onset and Progression of Skeletal Muscle Aging.International journal of molecular sciences · 2025Review
- Frequency-Dependent Mechanism of 24-Hydroxycholesterol-Mediated Modulation of Neurotransmitter Release at the Mouse Neuromuscular Junction: The Role of Reactive Oxygen Species.Neurochemical research · 2025Article
- Cholesterol-Lowering Treatment Suppresses Neuromuscular Transmission Via Presynaptic Mechanism at the Mouse Diaphragm Muscle.Neurochemical research · 2025Article
- Key genes and processes affected by atorvastatin treatment in mouse diaphragm muscle.Archives of toxicology · 2025Article
- 25-Hydroxycholesterol as a negative regulator of diaphragm muscle contractions via estrogen receptor and CaHistochemistry and cell biology · 2025Article
- Chloroquine Causes Aging-like Changes in Diaphragm Neuromuscular Junction Morphology in Mice.Cells · 2025Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
Age-related impairment of the diaphragm causes respiratory complications. Neuromuscular junction (NMJ) dysfunction can be one of the triggering events in diaphragm weaknesses in old age. Prominent structural and functional alterations in diaphragm NMJs were described in elderly rodents, but NMJ changes in middle age remain unclear. Here, we compared diaphragm muscles from young adult (3 months) and middle-aged (12 months) BALB/c mice. Microelectrode recordings, immunofluorescent staining, electron microscopy, myography, and whole-body plethysmography were used. We revealed presynaptic (i) and postsynaptic (ii) changes. The former (i) included an increase in both action potential propagation velocity and neurotransmitter release evoked by low-, moderate-, and high-frequency activity but a decrease in immunoexpression of synapsin 1 and synaptic vesicle clustering. The latter (ii) consisted of a decrease in currents via nicotinic acetylcholine receptors and the area of their distribution. These NMJ changes correlated with increased contractile responses to moderate- to high-frequency nerve activation. Additionally, we found alterations in the pattern of respiration (an increase in peak inspiratory flow and a tendency of elevation of the tidal volume), which imply increased diaphragm activity in middle-aged mice. We conclude that enhancement of neuromuscular communication (due to presynaptic mechanism) accompanied by improved contractile responses occurs in the diaphragm in early aging.
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Registered trials
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 Socratic graph.