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EA at PC6 Promotes Gastric Motility: Role of Brainstem Vagovagal Neurocircuits
Joint Authors
Yu, Zhi
Lu, Mengjiang
Chen, Chienchih
Li, Wen
Xu, Bin
Source
Evidence-Based Complementary and Alternative Medicine
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-15
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Background.
We aimed to assess whether electroacupuncture (EA) at PC6 affects gastric motility via the vagovagal reflex and if so whether brainstem vagovagal neurocircuits and related transmitters are involved.
Methods.
Gastric motility was measured in male Sprague-Dawley (SD) rats by placing a small manometric balloon in the gastric antrum.
The rats were subjected to control, sham surgery, vagotomy, sympathectomy, and microinjection group, including artificial cerebrospinal fluid, gamma-aminobutyric acid (GABA), and glutamic acid (L-Glu).
The effect of EA at PC6 on gastric motility was measured.
Moreover, electrophysiological testing was used to measure the effect of EA at PC6 on the parasympathetic and sympathetic nerves.
In addition, artificial cerebrospinal fluid, L-Glu, and GABA have been microinjected into the dorsal motor nucleus of the vagus (DMV) to measure the changes in gastric motility and parasympathetic nerve discharge induced by EA at PC6.
Key Results.
EA facilitated the gastric motility in control group.
In the vagotomy group, gastric motility was not affected by EA at PC6.
However, in the sympathectomy group, gastric motility was similar to control group.
Acupuncture at PC6 increased parasympathetic nerve discharge but not sympathetic nerve discharge.
Furthermore, the microinjection of L-Glu into the DMV increased gastric motility, although EA at PC6 showed no remarkable change in this group.
The injection of GABA reduced gastric motility and parasympathetic nerve discharge, but EA at PC6 significantly increased gastric motility and the parasympathetic nerve discharge in this group.
Conclusions and Inferences.
EA at PC6—primarily by inhibiting GABA transmission to DMV—reduced the inhibition of efferent vagal motor fibers and thus promoted efferent vagus nerve activity and increased gastric motility.
American Psychological Association (APA)
Lu, Mengjiang& Chen, Chienchih& Li, Wen& Yu, Zhi& Xu, Bin. 2019. EA at PC6 Promotes Gastric Motility: Role of Brainstem Vagovagal Neurocircuits. Evidence-Based Complementary and Alternative Medicine،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1150873
Modern Language Association (MLA)
Lu, Mengjiang…[et al.]. EA at PC6 Promotes Gastric Motility: Role of Brainstem Vagovagal Neurocircuits. Evidence-Based Complementary and Alternative Medicine No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1150873
American Medical Association (AMA)
Lu, Mengjiang& Chen, Chienchih& Li, Wen& Yu, Zhi& Xu, Bin. EA at PC6 Promotes Gastric Motility: Role of Brainstem Vagovagal Neurocircuits. Evidence-Based Complementary and Alternative Medicine. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1150873
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1150873