Evidence map›Paper›PMID 25461739›Full record

ArticleMagnetic resonance in medicine2015

In vivo longitudinal proton magnetic resonance spectroscopy on neonatal hypoxic-ischemic rat brain injury: Neuroprotective effects of acetyl-L-carnitine.

Su Xu, Jaylyn Waddell, Wenjun Zhu, Da Shi, Andrew D Marshall, Mary C McKenna, Rao P Gullapalli

Abstract read
In one paragraph

Article in Magnetic resonance in medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 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

7 authors.

Su XuDepartment of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Jaylyn WaddellDepartment of Pediatrics and Program in Neuroscience, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Wenjun ZhuDepartment of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Da ShiDepartment of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Andrew D MarshallDepartment of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Mary C McKennaDepartment of Pediatrics and Program in Neuroscience, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Rao P GullapalliDepartment of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.

Funding

SPECTRIN-DEPENDENT MEMBRANE DOMAINS IN THE DEVELOPING CNSP01HD016596 · NICHD · UNIVERSITY OF MARYLAND BALTIMORE · PI MCKENNA, MARY C · 1985 to 2013
$12.8M
HIGH-FIELD ANIMAL MRI: PEDIATRIC HEAD INJURY, PAINS10RR019935 · NCRR · UNIVERSITY OF MARYLAND BALTIMORE · PI GULLAPALLI, RAO P · 2005 to 2005
$2.0M
NCRR NIH HHS S10 RR019935NICHD NIH HHS 5P01 HD016596NICHD NIH HHS P01 HD016596
6 · The paper itself

Abstract

purposeThis study evaluated the longitudinal metabolic alterations after neonatal hypoxia-ischemia (HI) in rats and tested the neuroprotective effect of acetyl-L-carnitine (ALCAR) using in vivo proton short-TE Point-RESolved Spectroscopy method.

methodsRice-Vannucci model was used on 7-day-old Sprague-Dawley rats. Data were acquired from contralateral and ipsilateral cortex and hippocampus, respectively at 4 time points (24-h, 72-h, 7-days, 28-days) post-HI. The effect of subcutaneous administration of ALCAR (100 mg/kg) immediately after HI, at 4-h, 24-h, and 48-h post-HI was determined.

resultsSignificant reductions in glutathione (P < 0.005), myo-inositol (P < 0.002), taurine (P < 0.001), and total creatine (P < 0.005) were observed at 24-h postinjury compared with the control group in the ipsilateral hippocampus of the HI rat pups. ALCAR-treated-HI rats had lower levels of lactate and maintained total creatine at 24-h and had smaller lesion size compared with the HI only rats.

conclusionSevere oxidative, osmotic stress, impaired phosphorylation, and a preference for anaerobic glycolysis were found in the ipsilateral hippocampus in the HI pups at 24-h postinjury. ALCAR appeared to have a neuroprotective effect if administered early after HI by serving as an energy substrate and promote oxidative cerebral energy producing and minimize anaerobic glycolysis.

Indexed as

AcetylcarnitineAnimalsCreatineDrug MonitoringFemaleHumansHypoxia-Ischemia, BrainInfant, NewbornInfant, Newborn, DiseasesInjections, SubcutaneousLongitudinal StudiesMaleNeuroprotective AgentsProton Magnetic Resonance SpectroscopyRatsRats, Sprague-DawleyAcetylcarnitineCreatineNeuroprotective Agentsin vivo proton magnetic resonance spectroscopyneonatal hypoxic-ischemic rat brain injuryneuroprotection effect of acetyl-L-carnitine

Identifiers

PMID25461739
PMCPMC4452442

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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.