ArticleInternational journal of molecular sciences2022
A Comparative Study on the Effect of Acute Pharyngeal Stimulation with TRP Agonists on the Biomechanics and Neurophysiology of Swallow Response in Patients with Oropharyngeal Dysphagia.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 12 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Treatment of Chronic Post-stroke Oropharyngeal Dysphagia With Paired Stimulation Through Peripheral TRVP1 Agonists and Non-invasive Brain Stimulation
Treatment of Acute Post-stroke Oropharyngeal Dysphagia With Paired Stimulation Through Peripheral TRVP1 Agonists and Non-invasive Brain Stimulation
Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.
- Esophageal and Oropharyngeal Dysphagia: Clinical Recommendations From the United European Gastroenterology and European Society for Neurogastroenterology and Motility.United European gastroenterology journal · 2025Guideline
- An oral nutritional supplement with TRPM8 agonists as a cooling flavor improved swallowing function in post-stroke patients with oropharyngeal dysphagia.Scientific reports · 2026Trial
- Article
- Effect of Fluid Thickening with a Gum-Based Thickening Product in Older Patients with Structural or Mild Oropharyngeal Dysphagia.Nutrients · 2026Article
- Brainstem Stroke and Dysphagia Treatment: A Narrative Review on the Role of Neuromodulation, Skill-Based Swallowing Training and Transient Receptor Potential Agonists.Audiology research · 2025Review
- Physiological functions and pharmacological targeting of transient receptor potential channels.Pharmacological reviews · 2025Review
- Transient Receptor Potential Channels in Physiology and Pathophysiology: Special Issue.International journal of molecular sciences · 2025Article
- Topical ATP Application in the Peripheral Swallowing-Related Regions Facilitates Triggering of the Swallowing Reflex Involving P2X3 Receptors.Function (Oxford, England) · 2025Article
- Exploring the Effects of Action Observation Therapy on Swallowing Disorders in Stroke: A Functional Connectivity-Based fMRI Study.Neural plasticity · 2025Article
- The effects of simulated gastroesophageal reflux on infant pig oropharyngeal feeding physiology.American journal of physiology. Gastrointestinal and liver physiology · 2024Article
- Transient receptor potential channels as an emerging therapeutic target for oropharyngeal dysphagia.The Japanese dental science review · 2023Review
- Pharmacological activation of transient receptor potential vanilloid 4 promotes triggering of the swallowing reflex in rats.Frontiers in cellular neuroscience · 2023Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
Fluid thickening is the main compensatory strategy for patients with oropharyngeal dysphagia (OD) associated with aging or neurological diseases, and there is still no pharmacological treatment. We aimed to compare the effects of increasing bolus viscosity with that of acute stimulation with TRPV1, TRPA1 or TRPM8 agonists on the biomechanics and neurophysiology of swallow response in patients with OD. We retrospectively analyzed seven studies from our laboratory on 329 patients with OD. The effect of increasing shear viscosity up to 3682 mPa·s was compared by videofluoroscopy and pharyngeal sensory evoked potentials (pSEP) with that of adding to the bolus: capsaicin (TRPV1, 150 μM/10 μM), piperine (TRPA1/V1, 1 mM/150 μM), menthol (TRPM8, 1 mM/10 mM), cinnamaldehyde-zinc (TRPA1, 100 ppm−70 mM), citral (TRPA1, 250 ppm) or citral-isopulegol (TRPA1-TRPM8, 250 ppm−200 ppm). Fluid thickening improved the safety of swallow by 80% (p < 0.0001) by delaying bolus velocity by 20.7 ± 7.0% and time to laryngeal vestibule closure (LVC) by 23.1 ± 3.7%. Capsaicin 150μM or piperine 1 mM significantly improved safety of swallow by 50% (p < 0.01) and 57.1% (p < 0.01) by speeding time to LVC by 27.6% (p < 0.001) and 19.5% (p < 0.01) and bolus velocity by 24.8% (p < 0.01) and 16.9% (p < 0.05), respectively. Cinnamaldehyde-zinc shortened the P2 latency of pSEPs by 11.0% (p < 0.01) and reduced N2-P2 amplitude by 35% (p < 0.01). In conclusion, TRPV1 and TRPV1/A1 agonists are optimal candidates to develop new pharmacological strategies to promote the recovery of brain and swallow function in patients with chronic OD.
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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 OpenQuestion graph.