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Updated: May 14, 2026

Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

Published on: October 18, 2011

Molecular pathways: radiation-induced cognitive impairment.

Dana Greene-Schloesser¹, Elizabeth Moore, Mike E Robbins

¹Department of Radiation Oncology and Cancer Biology, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157, USA. dgreenes@wakehealth.edu

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research

|February 8, 2013

Summary

Radiation therapy for brain cancer can cause lasting cognitive impairment. New research shows certain drugs may prevent this, improving quality of life for patients undergoing radiotherapy.

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Stem Cell Transplantation Strategies for the Restoration of Cognitive Dysfunction Caused by Cranial Radiotherapy

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Published on: October 18, 2011

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Last Updated: May 14, 2026

Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

Published on: October 18, 2011

Stem Cell Transplantation Strategies for the Restoration of Cognitive Dysfunction Caused by Cranial Radiotherapy

Stem Cell Transplantation Strategies for the Restoration of Cognitive Dysfunction Caused by Cranial Radiotherapy

Published on: October 18, 2011

Area of Science:

Neuroscience
Oncology
Radiotherapy

Background:

Brain irradiation for cancer treatment poses risks of late cognitive impairment.
Radiation-induced cognitive deficits affect memory, attention, and executive functions, diminishing patient quality of life.
Mechanisms of radiation-induced cognitive impairment are not fully understood, though neuroinflammation and hippocampal neurogenesis are implicated.

Purpose of the Study:

To investigate the mechanisms of radiation-induced cognitive impairment.
To evaluate potential therapeutic strategies for mitigating these effects.

Main Methods:

Focus on preclinical studies examining the hippocampus and adult neurogenesis.
Investigated the effects of neuronal stem cell implantation.
Assessed the efficacy of PPAR agonists and RAS blockers in preventing radiation-induced neuroinflammation and cognitive decline.

Main Results:

Radiation ablates hippocampal neurogenesis, impairs neuronal function, and induces neuroinflammation.
Neuronal stem cell transplantation into the hippocampus can restore neurogenesis and improve cognition post-irradiation.
Specific drugs (PPAR agonists, RAS blockers) prevent radiation-induced neuroinflammation and cognitive impairment, independent of neurogenesis enhancement.

Conclusions:

Radiation therapy for brain cancer leads to significant cognitive impairment.
Therapeutic interventions, including stem cell therapy and specific drug classes, show promise in preventing or mitigating these effects.
Targeting neuroinflammation and preserving cognitive function are crucial for improving the quality of life for radiotherapy patients.