Evidence map›Paper›PMID 26536672›Full record

ArticlePloS one2015

Postoperative Structural Brain Changes and Cognitive Dysfunction in Patients with Breast Cancer.

Chiho Sato, Atsushi Sekiguchi, Masaaki Kawai, Yuka Kotozaki, Rui Nouchi, Hiroshi Tada, Hikaru Takeuchi, Takanori Ishida, Yasuyuki Taki, Ryuta Kawashima and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 3 pooled it
1.7field-weighted citation impact, top 15% 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

21 citing papers in PubMed, 3 syntheses or guidelines pooled it, 48 citations in OpenAlex.

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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

11 authors at 4 institutions in 1 country.

Chiho SatoDepartment of Functional Brain Imaging, Institute of Development, Aging and Cancer (IDAC), Tohoku University, Sendai, Japan.
Atsushi SekiguchiDepartment of Functional Brain Imaging, Institute of Development, Aging and Cancer (IDAC), Tohoku University, Sendai, Japan.
Masaaki KawaiDepartment of Breast Oncology, Miyagi Cancer Center Hospital, Miyagi, Japan.
Yuka KotozakiDivision of Clinical Research, Medical-Industry Translational Research Center, Fukushima Medical University School of Medicine, Fukushima, Japan.
Rui NouchiCreative Interdisciplinary Research Division, Frontier Research Institute for Interdisciplinary Science, Tohoku University, Sendai, Japan.
Hiroshi TadaDivision of Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
Hikaru TakeuchiDivision of Developmental Cognitive Neuroscience, IDAC, Tohoku University, Sendai, Japan.
Takanori IshidaDivision of Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
Yasuyuki TakiDivision of Medical Neuroimage Analysis, Department of Community Medical Supports, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.
Ryuta KawashimaDepartment of Functional Brain Imaging, Institute of Development, Aging and Cancer (IDAC), Tohoku University, Sendai, Japan.
Noriaki OhuchiDivision of Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
Tohoku University · JPFukushima Medical University · JPMiyagi Prefectural Hospital Organization · JPNational Center of Neurology and Psychiatry · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe primary purpose of this study was to clarify the influence of the early response to surgery on brain structure and cognitive function in patients with breast cancer. It was hypothesized that the structure of the thalamus would change during the early response after surgery due to the effects of anesthesia and would represent one aspect of an intermediate phenotype of postoperative cognitive dysfunction (POCD).

methodsWe examined 32 postmenopausal females with breast cancer and 20 age-matched controls. We assessed their cognitive function (attention, memory, and executive function), and performed brain structural MRI 1.5 ± 0.5 days before and 5.6 ± 1.2 days after surgery.

resultsWe found a significant interaction between regional grey matter volume (rGMV) in the thalamus (P < 0.05, familywise error (FWE), small volume correction (SVC)) and one attention domain subtest (P = 0.001, Bonferroni correction) after surgery in the patient group compared with the control group. Furthermore, the changes in attention were significantly associated with sevoflurane anesthetic dose (r2 = 0.247, β = ‒0.471, P = 0.032) and marginally associated with rGMV changes in the thalamus (P = 0.07, FWE, SVC) in the Pt group.

conclusionOur findings suggest that alterations in brain structure, particularly in the thalamus, may occur shortly after surgery and may be associated with attentional dysfunction. This early postoperative response to anesthesia may represent an intermediate phenotype of POCD. It was assumed that patients experiencing other risk factors of POCD, such as the severity of surgery, the occurrence of complications, and pre-existing cognitive impairments, would develop clinical POCD with broad and multiple types of cognitive dysfunction.

Indexed as

AnesthesiaAttentionBreast NeoplasmsCognitionCognitive DysfunctionExecutive FunctionFemaleGray MatterHumansInflammationMagnetic Resonance ImagingMemoryMiddle AgedNeuropsychological TestsPostoperative ComplicationsPsychological Tests

Identifiers

PMID26536672
PMCPMC4633203
OpenAlexW2148701444

What OpenQuestion holds

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LicenceCC BY
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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.