Evidence map›Paper›PMID 25519734›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2015

Acute intermittent optogenetic stimulation of nucleus tractus solitarius neurons induces sympathetic long-term facilitation.

Kenta Yamamoto, Peter Lalley, Steve Mifflin

Abstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

3 authors.

Kenta YamamotoDepartment of Integrative Physiology, Cardiovascular Research Institute, University of North Texas Health Science Center, Fort Worth, Texas; and.
Peter LalleyDepartment of Neuroscience, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
Steve MifflinDepartment of Integrative Physiology, Cardiovascular Research Institute, University of North Texas Health Science Center, Fort Worth, Texas; and Steve.Mifflin@unthsc.edu.

Funding

Neurohumoral Adaptations to Chronic Intermittent Hypoxia: Insights into the Pathophysiology of Sleep ApneaP01HL088052 · NHLBI · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI TONEY, GLENN M · 2008 to 2019
$18.8M
NHLBI NIH HHS HL-088052NHLBI NIH HHS P01 HL088052
6 · The paper itself

Abstract

Acute intermittent hypoxia (AIH) induces sympathetic and phrenic long-term facilitation (LTF), defined as a sustained increase in nerve discharge. We investigated the effects of AIH and acute intermittent optogenetic (AIO) stimulation of neurons labeled with AAV-CaMKIIa, hChR2(H134R), and mCherry in the nucleus of the solitary tract (NTS) of anesthetized, vagotomized, and mechanically ventilated rats. We measured renal sympathetic nerve activity (RSNA), phrenic nerve activity (PNA), power spectral density, and coherence, and we made cross-correlation measurements to determine how AIO stimulation and AIH affected synchronization between PNA and RSNA. Sixty minutes after AIH produced by ventilation with 10% oxygen in balanced nitrogen, RSNA and PNA amplitude increased by 80% and by 130%, respectively (P < 0.01). Sixty minutes after AIO stimulation, RSNA and PNA amplitude increased by 60% and 100%, respectively, (P < 0.01). These results suggest that acute intermittent stimulation of NTS neurons can induce renal sympathetic and phrenic LTF in the absence of hypoxia or chemoreceptor afferent activation. We also found that while acute intermittent optogenetic and hypoxic stimulations increased respiration-related RSNA modulation (P < 0.01), they did not increase synchronization between central respiratory drive and RSNA. We conclude that mechanisms that induce LTF originate within the caudal NTS and extend to other interconnecting neuronal elements of the central nervous cardiorespiratory network.

Indexed as

Long-Term PotentiationNeuronsAngiotensin II Type 1 Receptor BlockersAnimalsBaroreflexBlood PressureCalcium-Calmodulin-Dependent Protein Kinase Type 2ChannelrhodopsinsDisease Models, AnimalHeart RateHypoxiaKidneyLightLuminescent ProteinsMaleOptogeneticsAngiotensin II Type 1 Receptor BlockersCalcium-Calmodulin-Dependent Protein Kinase Type 2ChannelrhodopsinsLuminescent ProteinsRed Fluorescent Proteinnucleus tractus solitariusoptogeneticssympathetic long-term facilitationsynchronization

Identifiers

PMID25519734
PMCPMC4329466

What OpenQuestion holds

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Registered trials

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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.