Cited by 49Effects of Radiation ExposureRadiation Therapy and DosimetryElectromagnetic Fields and Biological Effects

Low dose radiation effects on the brain – from mechanisms and behavioral outcomes to mitigation strategies

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Kovalchuk, Anna, Kolb, Bryan·2017·Cell Cycle

Abstract

Based on the most recent estimates by the Canadian Cancer Society, 2 in 5 Canadians will develop cancer in their lifetimes. More than half of all cancer patients receive some type of radiation therapy, and all patients undergo radiation-based diagnostics. While radiation is one of the most important diagnostic and treatments modalities, high-dose cranial radiation therapy causes numerous central nervous system side-effects, including declines in cognitive function, memory, and attention. While the mechanisms of these effects have been studies, they still need to be further elucidated. On the other hand, the effects of low dose radiation as well as indirect radiation bystander effects on the brain remain elusive. We pioneered analysis of the molecular and cellular effects of low dose direct, bystander and scatter radiation on the brain. Using a rat model, we showed that low dose radiation exposures cause molecular and cellular changes in the brain and impacts animal behavior. Here we reflect upon our recent findings and current state of knowledge in the field, and suggest novel radiation effect biomarkers and means of prevention. We propose strategies and interventions to prevent and mitigate radiation effects on the brain.

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Crossref · 10.1080/15384101.2017.1320003

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  • Multiple fetuses per pregnancy, intrauterine growth restriction (IUGR), X-ray, UV, nuclear or cosmic radiation, (ultra)sound as well as high temperature, preterm birth or hypoxia whether or not by traumatic causes can pose serious threats to proper corticogenesis.

    “Multiple fetuses per pregnancy, intrauterine growth restriction (IUGR, due to placental failure other than by causes described above), X-ray, UV, nuclear or cosmic radiation, (ultra)sound as well as high temperature, preterm birth or hypoxia whether or not by traumatic causes can pose serious threats to proper corticogenesis as well [349–356].”

    From Development of prefrontal cortex (2022) · cites this paper as [356]

    The “Radiation effects on the brain” section says irradiation can harm brain function and identifies the prefrontal cortex as particularly sensitive; the References also list a study of the cerebral cortex of irradiated rat fetuses. The paper does not establish that all the listed exposures and pregnancy conditions threaten corticogenesis, nor does it specifically establish an effect on corticogenesis for each type of radiation named. (LLM, conf=0.85)

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Research works printed but not linked: 2

  1. Mizumatsu S, Monje ML, Morhardt DR, Rola R, Palmer TD, Fike JR. Extreme sensitivity of adult neurogenesis to low doses of X-irradia- tion. Cancer Res 2003; 63:4021-7; PMID:12874001
  2. Koturbash I. Molecular mechanisms of radiation-induced bystander efefcts in vivo. (Unpublished PhD thesis). Department of Biological Sciences. Lethbridge, AB, Canada: University of Lethbridge 2008

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Authors
Kovalchuk, A., & Kolb, B.
Affiliations
University of Lethbridge (CA)
Corresponding author
Kolb, Bryan
Venue
Cell Cycle
Published
2017-06-29
Volume
16
Issue
13
Pages
1266-1270
ISSN
  • 1538-4101 (ISSN-L)
  • 1551-4005
OpenAlex
W2725210585
Cited by
49
References
69
Citations by year
2026: 3 · 2025: 4 · 2024: 6 · 2023: 8 · 2022: 7 · 2021: 8 · 2020: 5 · 2019: 5 · 2018: 2 · 2016: 1
Type
journal article
Language
en
Open access
Locations
  • Cell Cycle (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Electromagnetic Fields and Biological Effects
Keywords
low-dose radiation, radiation effects on brain, radiation-induced cognitive impairment, radiotherapy complications, bystander effect, scattered radiation, radiation protection, rat model
MeSH terms
Animals, Behavior, Animal, Brain, Dose-Response Relationship, Radiation, Hippocampus, Radiation, Ionizing, Models, Animal, Bystander Effect, Rats

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