Medical devices (Auckland, N.Z.)Oct 15, 2026

Effects of Gentle Pulsed Ultrasound on Communication Between the Gut and Brain

Gut-Brain Axis Weekly Brief ↗PubMed ↗DOI ↗OA ↗

Updated Oct 16, 2026

Abstract

Low-intensity pulsed ultrasound (LIPUS) may influence the gut-brain axis through various biological mechanisms.

LIPUS could affect inflammatory signalling, epithelial barrier function, microbial ecology, and neuroimmune activity.
Current rodent studies suggest that abdominal stimulation may lead to coordinated responses in the intestine, systemic circulation, microbiota, and brain.
Brain-directed LIPUS stimulation is associated with improvements in cerebral inflammation and intestinal pathology.
Mechanistic insights indicate that acoustic forces may interact with specific cellular pathways, including ion channels and inflammation-related pathways.
No study has yet established a complete causal sequence linking acoustic stimulation to gut-brain communication.
Direct evidence for LIPUS effectiveness in gut-brain axis disorders in humans is currently lacking.

Simplified

The gut-brain axis is a bidirectional communication network involved in inflammatory, metabolic, and neurobehavioural homeostasis. Low-intensity pulsed ultrasound (LIPUS) is a non-invasive biophysical modality that may influence this axis through acoustic mechanotransduction and downstream changes in inflammatory signalling, epithelial barrier function, microbial ecology, and neuroimmune activity. This mini review synthesizes predominantly preclinical evidence on abdominal and brain-directed LIPUS. Current rodent studies indicate that abdominal stimulation can produce coordinated intestinal, systemic, microbial, and central responses, whereas brain-directed stimulation can be accompanied by improvement in both cerebral inflammation and intestinal pathology. Mechanistic studies outside the gut-brain axis further suggest that mechanosensitive ion channels, focal-adhesion signalling, cytoskeletal remodelling, NF-κB, and inflammasome-related pathways may connect acoustic forces to biological responses. However, no single study has established the complete causal sequence from acoustic stimulation to gut-brain communication. Direct human evidence for LIPUS efficacy in gut-brain axis-related disorders is currently lacking. LIPUS should therefore be regarded as a promising preclinical approach requiring standardized acoustic reporting, independent replication, causal pathway validation, and disease-specific optimization before clinical translation.

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Effects of Gentle Pulsed Ultrasound on Communication Between the Gut and Brain

Abstract

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