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Published in: Breast Cancer Research and Treatment 1/2019

01-07-2019 | Breast Cancer | Clinical trial

Intrinsic brain activity changes associated with adjuvant chemotherapy in older women with breast cancer: a pilot longitudinal study

Authors: Bihong T. Chen, Taihao Jin, Sunita K. Patel, Ningrong Ye, Huiyan Ma, Chi Wah Wong, Russell C. Rockne, James C. Root, Andrew J. Saykin, Tim A. Ahles, Andrei I. Holodny, Neal Prakash, Joanne Mortimer, James Waisman, Yuan Yuan, Daneng Li, Mina S. Sedrak, Jessica Vazquez, Vani Katheria, William Dale

Published in: Breast Cancer Research and Treatment | Issue 1/2019

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Abstract

Purpose

Older cancer patients are at increased risk of cancer-related cognitive impairment. The purpose of this study was to assess the alterations in intrinsic brain activity associated with adjuvant chemotherapy in older women with breast cancer.

Methods

Chemotherapy treatment (CT) group included sixteen women aged ≥ 60 years (range 60–82 years) with stage I–III breast cancers, who underwent both resting-state functional magnetic resonance imaging (rs-fMRI) and neuropsychological testing with NIH Toolbox for Cognition before adjuvant chemotherapy, at time point 1 (TP1), and again within 1 month after completing chemotherapy, at time point 2 (TP2). Fourteen age- and sex-matched healthy controls (HC) underwent the same assessments at matched intervals. Three voxel-wise rs-fMRI parameters: amplitude of low-frequency fluctuation (ALFF), fractional ALFF (fALFF), and regional homogeneity, were computed at each time point. The changes in rs-fMRI parameters from TP1 to TP2 for each group, the group differences in changes (the CT group vs. the HC group), and the group difference in the baseline rs-fMRI parameters were assessed. In addition, correlative analysis between the rs-fMRI parameters and neuropsychological testing scores was also performed.

Results

In the CT group, one brain region, which included parts of the bilateral subcallosal gyri and right anterior cingulate gyrus, displayed increased ALFF from TP1 to TP2 (cluster p-corrected = 0.024); another brain region in the left precuneus displayed decreased fALFF from TP1 to TP2 (cluster level p-corrected = 0.025). No significant changes in the rs-fMRI parameters from TP1 to TP2 were observed in the HC group. Although ALFF and fALFF alterations were observed only in the CT group, none of the between-group differences in rs-fMRI parameter changes reached statistical significance.

Conclusions

Our study results of ALFF and fALFF alterations in the chemotherapy-treated women suggest that adjuvant chemotherapy may affect intrinsic brain activity in older women with breast cancer.
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Metadata
Title
Intrinsic brain activity changes associated with adjuvant chemotherapy in older women with breast cancer: a pilot longitudinal study
Authors
Bihong T. Chen
Taihao Jin
Sunita K. Patel
Ningrong Ye
Huiyan Ma
Chi Wah Wong
Russell C. Rockne
James C. Root
Andrew J. Saykin
Tim A. Ahles
Andrei I. Holodny
Neal Prakash
Joanne Mortimer
James Waisman
Yuan Yuan
Daneng Li
Mina S. Sedrak
Jessica Vazquez
Vani Katheria
William Dale
Publication date
01-07-2019
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 1/2019
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-019-05230-y

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