Evidence map›Paper›PMID 21338580›Full record

ArticleBrain research2011

Aging masks detection of radiation-induced brain injury.

Lei Shi, John Olson, Ralph D'Agostino, Constance Linville, Michelle M Nicolle, Michael E Robbins, Kenneth T Wheeler, Judy K Brunso-Bechtold

Abstract readComparative Study
In one paragraph

Article in Brain research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.4field-weighted citation impact, top 23% 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

16 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
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  3. Brain diffusion MRI biomarkers after oncology treatments.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2023
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  15. Radiation-induced brain injury: A review.Frontiers in oncology · 2012
    Article
  16. 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 1 institution in 1 country.

Lei ShiDepartment of Neurobiology and Anatomy, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA.
John Olson
Ralph D'Agostino
Constance Linville
Michelle M Nicolle
Michael E Robbins
Kenneth T Wheeler
Judy K Brunso-Bechtold
Wake Forest University · US

Funding

PPARs and Radiation-induced Brain InjuryR01CA112593 · NCI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI BLACKSTOCK, ARTHUR W, METHENY-BARLOW, LINDA J · 2004 to 2013
$3.0M
Neural Predictors and RAS Modulation of Radiation-induced Cognitive ImpairmentR01CA119990 · NCI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI ROBBINS, MICHAEL E. · 2006 to 2010
$1.3M
NCI NIH HHS CA112593NCI NIH HHS CA119990NCI NIH HHS R01 CA112593NCI NIH HHS R01 CA119990
6 · The paper itself

Abstract

Fractionated partial or whole-brain irradiation (fWBI) is a widely used, effective treatment for primary and metastatic brain tumors, but it also produces radiation-induced brain injury, including cognitive impairment. Radiation-induced neural changes are particularly problematic for elderly brain tumor survivors who also experience age-dependent cognitive impairment. Accordingly, we investigated i] radiation-induced cognitive impairment, and ii] potential biomarkers of radiation-induced brain injury in a rat model of aging. Fischer 344 x Brown Norway rats received fractionated whole-brain irradiation (fWBI rats, 40 Gy, 8 fractions over 4 weeks) or sham-irradiation (Sham-IR rats) at 12 months of age; all analyses were performed at 26-30 months of age. Spatial learning and memory were measured using the Morris water maze (MWM), hippocampal metabolites were measured using proton magnetic resonance spectroscopy ((1)H MRS), and hippocampal glutamate receptor subunits were evaluated using Western blots. Young rats (7-10 months old) were included to control for age effects. The results revealed that both Sham-IR and fWBI rats exhibited age-dependent impairments in MWM performance; fWBI induced additional impairments in the reversal MWM. (1)H MRS revealed age-dependent decreases in neuronal markers, increases in glial markers, but no detectable fWBI-dependent changes. Western blot analysis revealed age-dependent, but not fWBI-dependent, glutamate subunit declines. Although previous studies demonstrated fWBI-induced changes in cognition, glutamate subunits, and brain metabolites in younger rats, age-dependent changes in these parameters appear to mask their detection in old rats, a phenomenon also likely to occur in elderly fWBI patients >70 years of age.

Indexed as

AgingAnimalsBrain InjuriesCognition DisordersHippocampusMaleRadiation InjuriesRandom AllocationRatsRats, Inbred BNRats, Inbred F344

Identifiers

PMID21338580
PMCPMC3065504
OpenAlexW1992863789

What OpenQuestion holds

Textmetadata
LicenceTDM
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.