Evidence map›Paper›PMID 24993048›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2014

Sympathoexcitation and pressor responses induced by ethanol in the central nucleus of amygdala involves activation of NMDA receptors in rats.

Andrew D Chapp, Le Gui, Michael J Huber, Jinling Liu, Robert A Larson, Jianhua Zhu, Jason R Carter, Qing-Hui Chen

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.4field-weighted citation impact, top 46% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 27 citations in OpenAlex.

  1. Morning sympathetic activity after evening binge alcohol consumption.American journal of physiology. Heart and circulatory physiology · 2021
    Trial
  2. Small-Conductance CaNeuroscience bulletin · 2026
    Review
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  17. Central GPR109A Activation Mediates Glutamate-Dependent Pressor Response in Conscious Rats.The Journal of pharmacology and experimental therapeutics · 2016
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Andrew D ChappDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and.
Le GuiDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and Department of Cardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.
Michael J HuberDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and.
Jinling LiuDepartment of Cardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.
Robert A LarsonDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and.
Jianhua ZhuDepartment of Cardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.
Jason R CarterDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and.
Qing-Hui ChenDepartment of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan; and qinghuic@mtu.edu.
Michigan Technological University · USAffiliated Hospital of Nantong University · CNNantong University · CN

Funding

ER stress and reduced SK channel function in PVN in rats with high salt intakeR15HL122952 · NHLBI · MICHIGAN TECHNOLOGICAL UNIVERSITY · PI CHEN, QING-HUI H · 2015 to 2015
$459k
6 · The paper itself

Abstract

The central nervous system plays an important role in regulating sympathetic outflow and arterial pressure in response to ethanol exposure. However, the underlying neural mechanisms have not been fully understood. In the present study, we tested the hypothesis that injection of ethanol in the central nucleus of the amygdala (CeA) increases sympathetic outflow, which may require the activation of local ionotropic excitatory amino acid receptors. In anesthetized rats, CeA injection of ethanol (0, 0.17, and 1.7 μmol) increased splanchnic sympathetic nerve activity (SSNA), lumbar sympathetic nerve activity (LSNA), and mean arterial pressure (MAP) in a dose-dependent manner. A cocktail containing ethanol (1.7 μmol) and kynurenate (KYN), an ionotropic excitatory amino acid receptor blocker, showed significantly blunted sympathoexcitatory and pressor responses compared with those elicited by CeA-injected ethanol alone (P < 0.01). A cocktail containing ethanol and d-2-amino-5-phosphonovalerate, an N-methyl-d-aspartate (NMDA) receptor antagonist, elicited attenuated sympathoexcitatory and pressor responses that were significantly less than ethanol alone (P < 0.01). In addition, CeA injection of acetate (0.20 μmol, n = 7), an ethanol metabolite, consistently elicited sympathoexcitatory and pressor responses, which were effectively blocked by d-2-amino-5-phosphonovalerate (n = 9, P < 0.05). Inhibition of neuronal activity of the rostral ventrolateral medulla (RVLM) with KYN significantly (P < 0.01) attenuated sympathoexcitatory responses elicited by CeA-injected ethanol. Double labeling of immune fluorescence showed NMDA NR1 receptor expression in CeA neurons projecting to the RVLM. We conclude that ethanol and acetate increase sympathetic outflow and arterial pressure, which may involve the activation of NMDA receptors in CeA neurons projecting to the RVLM.

Indexed as

2-Amino-5-phosphonovalerateAction PotentialsAmygdalaAnimalsBlood PressureEthanolExcitatory Amino Acid AntagonistsKynurenic AcidMaleMedulla OblongataRatsRats, Sprague-DawleyReceptors, N-Methyl-D-AspartateSplanchnic Nerves2-Amino-5-phosphonovalerateEthanolExcitatory Amino Acid AntagonistsKynurenic AcidReceptors, N-Methyl-D-Aspartateacetateamygdalaethanolglutamate receptorsN-methyl-d-aspartatesympathetic nerve activity

Identifiers

PMID24993048
PMCPMC6415736
OpenAlexW1995217021

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.