Ameliorating effects and autonomic mechanisms of needle-less transcutaneous electrical stimulation at ST36 on stress-induced impairment in gastric slow waves

2015 ◽  
Vol 30 (11) ◽  
pp. 1574-1581 ◽  
Author(s):  
Nina Zhang ◽  
Gengqing Song ◽  
Jianfeng Chen ◽  
Feng Xu ◽  
Jieyun Yin ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Slow Waves ◽  
Transcutaneous Electrical Stimulation ◽  
Gastric Slow Waves

Electrical stimulation with pulse trains impairs gastric slow waves in dogs

2003 ◽  
Vol 124 (4) ◽  
pp. A680
Author(s):  
Xiaohong Xu ◽  
Douglas Brining ◽  
Zhishun Wang ◽  
Lijie Wang ◽  
Jiande Chen
Keyword(s):  
Electrical Stimulation ◽  
Slow Waves ◽  
Pulse Trains ◽  
Gastric Slow Waves

The effect of gastric electrical stimulation on canine gastric slow waves

2003 ◽  
Vol 284 (6) ◽  
pp. G956-G962 ◽  
Author(s):  
Jinhong Xing ◽  
Frederick Brody ◽  
Michael Rosen ◽  
J. D. Z. Chen ◽  
Edy Soffer
Keyword(s):  
Electrical Stimulation ◽  
High Frequency ◽  
Short Pulse ◽  
Low Frequency ◽  
Slow Waves ◽  
Gastric Electrical Stimulation ◽  
Pulse Trains ◽  
Gastric Slow Waves ◽  
Greater Curvature ◽  
Long Pulse

This study determined the most efficient parameters of low-frequency/long-pulse gastric electrical stimulation (GES) required to entrain gastric slow waves and also evaluated the effect of entrainment and high-frequency, short-pulse GES on gastric electrical activity (GEA). Nine dogs were fitted with stimulation wires along the greater curvature. Entrainment was observed in six or seven animals, with long-pulse GES at six cycles per minute (cpm), at various combinations of current and pulse width and was directly related to the energy delivered. Entrainment was observed in four to seven animals, with GES at 12 cpm, and the maximal driven frequency was 6 cpm. Entrainment did not significantly increase the dominant power of GEA. High-frequency, short-pulse GES, using pulse trains of 14 Hz, 5 mA, and 330 μs, with 0.1 s on and 5 s off, and pulse trains of 40 Hz, 10 mA, and 330 μs, with 2 s on 3 s off, did not affect variables of GEA. We conclude that acute low-frequency GES but not high-frequency, short-pulse GES can entrain slow waves; the power of slow waves is not affected by either type of stimulation.

scholarly journals Synchronized gastric electrical stimulation improves vagotomy-induced impairment in gastric accommodation via the nitrergic pathway in dogs

2009 ◽  
Vol 296 (2) ◽  
pp. G310-G318 ◽  
Author(s):  
Jie Chen ◽  
Thillai Koothan ◽  
Jiande D. Z. Chen
Keyword(s):  
Electrical Stimulation ◽  
Gastric Emptying ◽  
Gastric Volume ◽  
Slow Waves ◽  
Gastric Electrical Stimulation ◽  
Proximal Stomach ◽  
Gastric Accommodation ◽  
Gastric Tone ◽  
Gastric Dysrhythmia ◽  
Gastric Slow Waves

Impaired gastric accommodation and gastric dysrhythmia are common in gastroparesis and functional dyspepsia. Recent studies have shown that synchronized gastric electrical stimulation (SGES) accelerates gastric emptying and enhances antral contractions in dogs. The aim of this study was to investigate the effects and mechanism of SGES on gastric accommodation and slow waves impaired by vagotomy in dogs. Gastric tone, compliance, and accommodation as well as slow waves with and without SGES were assessed in seven female regular dogs and seven dogs with bilateral truncal vagotomy, chronically implanted with gastric serosal electrodes and a gastric cannula. We found that 1) vagotomy impaired gastric accommodation that was normalized by SGES. The postprandial increase in gastric volume was 283.5 ± 50.6 ml in the controlled dogs, 155.2 ± 49.2 ml in the vagotomized dogs, and 304.0 ± 57.8 ml in the vagotomized dogs with SGES. The ameliorating effect of SGES was no longer observed after application of Nω-nitro-l-arginine (l-NNA); 2) vagotomy did not alter gastric compliance whereas SGES improved gastric compliance in the vagotomized dogs, and the improvement was also blocked by l-NNA; and 3) vagotomy impaired antral slow wave rhythmicity in both fasting and fed states. SGES at the proximal stomach enhanced the postprandial rhythmicity and amplitude (dominant power) of the gastric slow waves in the antrum. In conclusion, SGES with appropriate parameters restores gastric accommodation and improves gastric slow waves impaired by vagotomy. The improvement in gastric accommodation with SGES is mediated via the nitrergic pathway. Combined with previously reported findings (enhanced antral contractions and accelerated gastric emptying) and findings in this study (improved gastric accommodation and slow waves), SGES may be a viable therapy for gastroparesis.

scholarly journals Synchronized Dual Pulse Gastric Electrical Stimulation Induces Activation of Enteric Glial Cells in Rats with Diabetic Gastroparesis

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Wei Yang ◽  
Nian Wang ◽  
Xue Shi ◽  
Jie Chen
Keyword(s):  
Electrical Stimulation ◽  
Gastric Emptying ◽  
Gastric Motility ◽  
Diabetic Rats ◽  
Slow Waves ◽  
Gastric Electrical Stimulation ◽  
Control Group ◽  
Gastric Slow Waves ◽  
Enteric Glial Cells ◽  
Before And After

Objective.The aims of this study were to investigate the effects of synchronized dual pulse gastric electrical stimulation (SGES) on gastric motility in different periods for diabetic rats and try to explore the possible mechanisms of the effects.Methods.Forty-six rats were used in the study. Gastric slow waves were recorded at baseline, 7–14-day diabetes and 56–63-day diabetes before and after stimulation and the age-matched control groups. SGES-60 mins and SGES-7 days (60 mins/day) were performed to test the effects on gastric motility and to evaluate glial marker S100B expression in stomach.Results.(1) Gastric emptying was accelerated in 7–14-day diabetes and delayed in 56–63-day diabetes. (2) The S100B expression in 56–63-day diabetes decreased and the ultrastructure changed. (3) The age-associated loss of EGC was observed in 56–63-day control group. (4) SGES was able to not only accelerate gastric emptying but also normalize gastric slow waves. (5) The S100B expression increased after SGES and the ultrastructure of EGC was partially restored. The effect of SGES-7 days was superior to SGES-60 mins.Conclusions.Delayed gastric emptying due to the growth of age may be related to the EGC inactivation. The effects of the SGES on gastric motility may be associated with EGC activation.

scholarly journals Percutaneous versus Transcutaneous Electrical Stimulation of the Posterior Tibial Nerve in Idiopathic Overactive Bladder Syndrome with Urinary Incontinence in Adults: A Systematic Review

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 879
Author(s):  
Aida Agost-González ◽  
Isabel Escobio-Prieto ◽  
Azahara M. Pareja-Leal ◽  
María Jesús Casuso-Holgado ◽  
María Blanco-Diaz ◽  
...  
Keyword(s):  
Systematic Review ◽  
Urinary Incontinence ◽  
Electrical Stimulation ◽  
Overactive Bladder ◽  
Tibial Nerve ◽  
Scientific Evidence ◽  
Transcutaneous Electrical Stimulation ◽  
Posterior Tibial Nerve ◽  
Posterior Tibial

Background: Percutaneous electrical stimulation and transcutaneous electrical stimulation (PTNS and TTNS) of the posterior tibial nerve are internationally recognized treatment methods that offer advantages in terms of treating patients with overactive bladder (OAB) who present with urinary incontinence (UI). This article aims to analyze the scientific evidence for the treatment of OAB with UI in adults using PTNS versus TTNS procedures in the posterior tibial nerve. Methods: A systematic review was conducted, between February and May 2021 in the Web of Science and Scopus databases, in accordance with the PRISMA recommendations. Results: The research identified 259 studies, 130 of which were selected and analyzed, with only 19 used according to the inclusion requirements established. The greatest effectiveness, in reducing UI and in other parameters of daily voiding and quality of life, was obtained by combining both techniques with other treatments, pharmacological treatments, or exercise. Conclusions: TTNS has advantages over PTNS as it is more comfortable for the patient even though there is equality of both therapies in the outcome variables. More research studies are necessary in order to obtain clear scientific evidence.

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