ArticleAmerican journal of physiology. Gastrointestinal and liver physiology2026
Measuring autonomic influence on gastrointestinal contractility: development and preliminary validation of novel capsule-based indices.
Article in American journal of physiology. Gastrointestinal and liver physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The migrating motor complex (MMC) is a key feature of fasting gastrointestinal (GI) motility, but its disruption in neuropathic conditions remains poorly characterized. Wireless motility capsules (WMCs) offer a noninvasive means of collecting motility data, facilitating study of larger cohorts. We aimed to develop WMC-derived metrics to identify neuropathic dysmotility and its associations with autonomic nervous system (ANS) function. We analyzed WMC data from 98 controls and 71 people living with human immunodeficiency virus (HIV; PWH) in whom autonomic neuropathy (AN) and delayed small bowel transit time (dSBTT) are common. We studied nine contractility metrics, including established and novel metrics targeting rhythmic bursts of sustained contractile activity. Autonomic function, summarized as Modified Composite Autonomic Severity Score (MCASS), was used to draw associations with contractility measures. All contractility metrics were higher in PWH compared with controls (
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