Evidence map›Paper›PMID 20041597›Full record

ArticleSleep2009

Neonatal maternal separation disrupts regulation of sleep and breathing in adult male rats.

Richard Kinkead, Gaspard Montandon, Aida Bairam, Yves Lajeunesse, Richard Horner

Abstract read
In one paragraph

Article in Sleep, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

  1. Article
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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

5 authors.

Richard KinkeadCentre de Recherche du CHUQ, Hôpital St-François d'Assise, Université Laval, Québec, Canada. Richard.Kinkead@crsfa.ulaval.ca
Gaspard Montandon
Aida Bairam
Yves Lajeunesse
Richard Horner

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

STUDY

objectivesNeonatal maternal separation (NMS) disrupts development of cardiorespiratory regulation. Adult male rats previously subjected to NMS are hypertensive and show a hypoxic ventilatory response greater than that of controls. These results have been obtained in awake or anesthetised animals, and the consequences of NMS on respiratory control during normal sleep are unknown. This study tested the following. HYPOTHESES: NMS augments respiratory variability across sleep-wake states, and NMS-related enhancement of the hypoxic ventilatory response occurs during sleep.

methodsTwo groups of adult rats were used: controls (no treatment) and rats subjected to NMS. Ventilatory activity, coefficient of variation, and hypoxic ventilatory response were compared between groups and across sleep-wake states. SUBJECTS: Male Sprague Dawley rats-NMS: n=11; controls: n=10. Pups subjected to NMS were isolated from their mother for 3 hours per day from postnatal days 3 to 12. Controls were undisturbed. MEASUREMENTS AND

resultsAt adulthood, sleep-wake states were monitored by telemetry, and ventilatory activity was measured using whole-body plethysmography. Sleep and breathing were measured for 2.5 hours (in the morning) while the rats were breathing room air. Data were analysed in 20-second epochs. Rats were then exposed to a brief (90-sec) hypoxic episode (nadir = 12% O2) to measure the hypoxic ventilatory response. The coefficient of variability for tidal volume and breathing frequency decreased during sleep but remained more elevated in NMS rats than in controls. During non-rapid eye movement sleep, the breathing-frequency response to hypoxia of NMS rats was significantly greater than that of controls.

conclusionNeonatal maternal separation results in persistent disruption of respiratory control during sleep.

Indexed as

Maternal DeprivationRespirationSleepAnimalsAnimals, NewbornBehavior, AnimalElectroencephalographyElectromyographyHypoxiaMalePlethysmography, Whole BodyPulmonary VentilationRatsRats, Sprague-DawleyRespiratory MechanicsSleep Apnea Syndromes

Identifiers

PMID20041597
PMCPMC2786045

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.