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Liu S, Guo Y, Ni J, Yin N, Li C, Pan X, Ma R, Wu J, Li S, Li X. Chemotherapy-induced functional brain abnormality in colorectal cancer patients: a resting‐state functional magnetic resonance imaging study. Front Oncol 2022; 12:900855. [PMID: 35924154 PMCID: PMC9339615 DOI: 10.3389/fonc.2022.900855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/28/2022] [Indexed: 12/02/2022] Open
Abstract
Introduction Chemotherapy-induced cognitive impairment (i.e., “chemobrain”) is a common neurotoxic side-effect experienced by many cancer survivors who undergone chemotherapy. However, the central mechanism underlying chemotherapy-related cognitive impairment is still unclear. The purpose of this study was to investigate the changes of intrinsic brain activity and their associations with cognitive impairment in colorectal cancer (CRC) patients after chemotherapy. Methods Resting‐state functional magnetic resonance imaging data of 29 CRC patients following chemotherapy and 29 matched healthy controls (HCs) were collected in this study, as well as cognitive test data including Mini Mental State Exam (MMSE), Montreal Cognitive Assessment (MoCA) and Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog). The measure of fractional amplitude of low-frequency fluctuation (fALFF) was calculated and compared between groups. The correlations between the fALFF of impaired brain region and cognitive performance were also analyzed. Results Compared with HCs, CRC patients following chemotherapy showed decreased fALFF values in the left anterior cingulate gyrus (ACG) and middle frontal gyrus, as well as increased fALFF values in the left superior frontal gyrus (orbital part) and middle occipital gyrus. Moreover, positive associations were identified between fALFF values of the left ACG and the total scores of MMSE, MoCA and FACT-Cog in the patient group. Conclusion These findings indicated that CRC patients after chemotherapy had decreased intrinsic brain activity in the left ACG, which might be vulnerable to the neurotoxic side-effect of chemotherapeutic drugs and related to chemotherapy-induced cognitive impairment.
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Affiliation(s)
- Siwen Liu
- Research Center for Clinical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Yesong Guo
- Department of Radiotherapy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Ni
- Department of Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Na Yin
- Department of Radiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Chenchen Li
- Department of Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Xuan Pan
- Department of Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Rong Ma
- Research Center for Clinical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Jianzhong Wu
- Research Center for Clinical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Shengwei Li
- Department of Anorectal, Yangzhou Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Yangzhou, China
- *Correspondence: Xiaoyou Li, ; Shengwei Li,
| | - Xiaoyou Li
- Department of Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Xiaoyou Li, ; Shengwei Li,
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Pharmacogenetics of the Central Nervous System-Toxicity and Relapse Affecting the CNS in Pediatric Acute Lymphoblastic Leukemia. Cancers (Basel) 2021; 13:cancers13102333. [PMID: 34066083 PMCID: PMC8151239 DOI: 10.3390/cancers13102333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/30/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Despite recent improvements in cure rates, pediatric acute lymphoblastic leukemia (ALL) patients remain at risk to develop relapse disease or suffer from therapy-associated side effects. Over 5% of adverse events appear in the central nervous system (CNS) and can impact survival or quality of life of the patients. Inherited genetic variations are possible predictive factors for these adverse events. This retrospective study aimed to investigate if inherited genetic variations in genes encoding drug-metabolizing enzymes and drug transporters localized in the blood-brain barrier are predictive for CNS events. Our results suggest that certain ABCB1, ABCG2 and GSTP1 gene polymorphisms influence CNS toxicity and CNS relapse. A more effective drug-clearance could lead to less toxicity but contribute to a higher chance of relapse and vice versa. Genetic variants in ABCB1, ABCG2 or GSTP1 genes are promising candidates for personalized medicine. Abstract Despite improving cure rates in childhood acute lymphoblastic leukemia (ALL), therapeutic side effects and relapse are ongoing challenges. These can also affect the central nervous system (CNS). Our aim was to identify germline gene polymorphisms that influence the risk of CNS events. Sixty single nucleotide polymorphisms (SNPs) in 20 genes were genotyped in a Hungarian non-matched ALL cohort of 36 cases with chemotherapy related acute toxic encephalopathy (ATE) and 544 controls. Five significant SNPs were further analyzed in an extended Austrian-Czech-NOPHO cohort (n = 107 cases, n = 211 controls) but none of the associations could be validated. Overall populations including all nations’ matched cohorts for ATE (n = 426) with seizure subgroup (n = 133) and posterior reversible encephalopathy syndrome (PRES, n = 251) were analyzed, as well. We found that patients with ABCB1 rs1045642, rs1128503 or rs2032582 TT genotypes were more prone to have seizures but those with rs1045642 TT developed PRES less frequently. The same SNPs were also examined in relation to ALL relapse on a case-control matched cohort of 320 patients from all groups. Those with rs1128503 CC or rs2032582 GG genotypes showed higher incidence of CNS relapse. Our results suggest that blood-brain-barrier drug transporter gene-polymorphisms might have an inverse association with seizures and CNS relapse.
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Butterbrod E, Sitskoorn M, Bakker M, Jakobs B, Fleischeuer R, Roijers J, Rutten G, Gehring K. The APOE ε4 allele in relation to pre- and postsurgical cognitive functioning of patients with primary brain tumors. Eur J Neurol 2021; 28:1665-1676. [PMID: 33342004 PMCID: PMC8247965 DOI: 10.1111/ene.14693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/03/2020] [Accepted: 12/06/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Recent studies suggest a relationship between the APOE ε4 allele and cognitive outcome in patients treated for malignant brain tumors. Still, longitudinal investigations that include a pretreatment cognitive assessment are lacking and APOE's effects in patients with benign tumors are understudied. This study investigated presurgical cognitive performance and postsurgical change in ε4-carrying and non-carrying patients with glioma and meningioma. METHODS Neuropsychological test scores (CNS Vital Signs battery [seven measures], Digit Span Forward/Backward, Letter Fluency test) were obtained as part of a prospective study in which patients with meningioma and glioma underwent cognitive assessment 1 day before (T0, n = 505) and 3 (T3, n = 418) and 12 months after (T12, n = 167) surgery. APOE isoforms were identified retrospectively. ε4 carriers and non-carriers were compared with regard to pretreatment cognitive performance on the group and individual level. Changes in performances over time were compared with longitudinal mixed model analysis in the total sample and the subgroup receiving adjuvant treatment. RESULTS Carriers and non-carriers did not differ with regard to pretreatment performance. No significant main effect of ε4 carrier status or interaction between time (T0-T12) and carrier status was found on any of the tests in the whole sample nor in the sample receiving adjuvant treatment. CONCLUSIONS This study found no evidence of increased vulnerability for pretreatment cognitive dysfunction or cognitive decline within 1 year after surgery in APOE ε4-carrying meningioma and glioma patients. Investigations that include larger samples at longer-term follow-up are recommended to investigate potential late treatment effects.
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Affiliation(s)
- Elke Butterbrod
- Department of Cognitive NeuropsychologyTilburg UniversityTilburgThe Netherlands
| | - Margriet Sitskoorn
- Department of Cognitive NeuropsychologyTilburg UniversityTilburgThe Netherlands
| | - Marjan Bakker
- Department of Methodology and StatisticsTilburg UniversityTilburgThe Netherlands
| | - Bernadette Jakobs
- Department of Laboratory MedicineElisabeth‐Tweesteden HospitalTilburgThe Netherlands
| | - Ruth Fleischeuer
- Clinical Pathology LaboratoryElisabeth‐Tweesteden HospitalTilburgThe Netherlands
| | - Janine Roijers
- Department of Laboratory MedicineElisabeth‐Tweesteden HospitalTilburgThe Netherlands
| | - Geert‐Jan Rutten
- Department of NeurosurgeryElisabeth‐Tweesteden HospitalTilburgThe Netherlands
| | - Karin Gehring
- Department of Cognitive NeuropsychologyTilburg UniversityTilburgThe Netherlands
- Department of NeurosurgeryElisabeth‐Tweesteden HospitalTilburgThe Netherlands
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Rijmenams I, Moechars D, Uyttebroeck A, Radwan A, Blommaert J, Deprez S, Sunaert S, Segers H, Gillebert CR, Lemiere J, Sleurs C. Age- and Intravenous Methotrexate-Associated Leukoencephalopathy and Its Neurological Impact in Pediatric Patients with Lymphoblastic Leukemia. Cancers (Basel) 2021; 13:cancers13081939. [PMID: 33923795 PMCID: PMC8073318 DOI: 10.3390/cancers13081939] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 12/04/2022] Open
Abstract
Simple Summary In this study, we investigated standardized post-chemotherapy magnetic resonance (MR) scans for leukoencephalopathy and patient- and treatment-related risk factors in childhood leukemia patients. As prevalence numbers are limited, our study provides the required estimations for this population. Furthermore, we demonstrate that younger patients might be more at-risk for development of leukoencephalopathy (LE), and that a higher intravenous methotrexate (IV-MTX) dose has a cumulative toxic effect, while the number of intrathecal administrations was not significantly associated with the extent of LE. This can suggest we should modify chemotherapeutic treatment regimens by decreasing the number of IV-MTX applications, with special attention for younger patients. Abstract Methotrexate (MTX) is associated with leukoencephalopathy (LE) in children treated for lymphoblastic leukemia/lymphoma (ALL/LBL). However, large-scale studies with systematic MR acquisition and quantitative volumetric lesion information remain limited. Hence, the prevalence of lesion burdens and the potential risk factors of LE in this population are still inconclusive. FLAIR-MRI scans were acquired at the end of treatment in children who were treated for ALL/LBL, which were quantitatively analyzed for LE. Voxels were assigned to the lesion segmentation if indicated by two raters. Logistic and linear regression models were used to test whether lesion presence and size were predicted by risk factors such as age at diagnosis, gender, intrathecal (IT-) or intravenous (IV-)MTX dose, CNS invasion, and acute neurological events. Patients with a pre-existing neurological condition or low-quality MR scan were excluded from the analyses. Of the 129 patients, ten (8%) suffered from CNS invasion. Chemotherapy-associated neurological events were observed in 13 patients (10%) during therapy, and 68 patients (53%) showed LE post-treatment. LE was more frequent in cases of lower age and higher cumulative IV-MTX doses, while the extent of LE and neurological symptoms were associated only with IV-MTX doses. Neurological events were not significantly associated with LE, even though symptomatic patients demonstrated a higher ratio of LE (n = 9/13) than asymptomatic patients (n = 59/116). This study suggests leukoencephalopathy frequently occurs in both symptomatic and asymptomatic leukemia patients. Younger children and patients treated with higher cumulative IV-MTX doses might need more regular screening for early detection and follow-up of associated sequelae.
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Affiliation(s)
- Ilona Rijmenams
- Department of Brain and Cognition, KU Leuven, 3000 Leuven, Belgium; (I.R.); (D.M.); (C.R.G.)
- Department of Pediatric Oncology, KU Leuven, 3000 Leuven, Belgium; (A.U.); (H.S.)
| | - Daan Moechars
- Department of Brain and Cognition, KU Leuven, 3000 Leuven, Belgium; (I.R.); (D.M.); (C.R.G.)
- Department of Pediatric Oncology, KU Leuven, 3000 Leuven, Belgium; (A.U.); (H.S.)
| | - Anne Uyttebroeck
- Department of Pediatric Oncology, KU Leuven, 3000 Leuven, Belgium; (A.U.); (H.S.)
- Department of Pediatric Hemato-Oncology, University Hospital Leuven, 3000 Leuven, Belgium;
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
| | - Ahmed Radwan
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
- Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Jeroen Blommaert
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
- Department of Gynaecological Oncology, KU Leuven, 3000 Leuven, Belgium
| | - Sabine Deprez
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
- Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Stefan Sunaert
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
- Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Heidi Segers
- Department of Pediatric Oncology, KU Leuven, 3000 Leuven, Belgium; (A.U.); (H.S.)
- Department of Pediatric Hemato-Oncology, University Hospital Leuven, 3000 Leuven, Belgium;
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
| | - Céline R. Gillebert
- Department of Brain and Cognition, KU Leuven, 3000 Leuven, Belgium; (I.R.); (D.M.); (C.R.G.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
| | - Jurgen Lemiere
- Department of Pediatric Hemato-Oncology, University Hospital Leuven, 3000 Leuven, Belgium;
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
| | - Charlotte Sleurs
- Department of Pediatric Oncology, KU Leuven, 3000 Leuven, Belgium; (A.U.); (H.S.)
- Leuven Cancer Institute, KU Leuven, 3000 Leuven, Belgium; (A.R.); (J.B.); (S.D.); (S.S.)
- Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium
- Correspondence:
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Bakos É, Német O, Patik I, Kucsma N, Várady G, Szakács G, Özvegy‐Laczka C. A novel fluorescence‐based functional assay for human OATP1A2 and OATP1C1 identifies interaction between third‐generation P‐gp inhibitors and OATP1A2. FEBS J 2019; 287:2468-2485. [DOI: 10.1111/febs.15156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/16/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Éva Bakos
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Orsolya Német
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Izabel Patik
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Nóra Kucsma
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - György Várady
- Laboratory of Molecular Cell Biology Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Gergely Szakács
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
- Institute of Cancer Research Medical University Vienna Wien Austria
| | - Csilla Özvegy‐Laczka
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
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Shao Y, Tan B, Shi J, Zhou Q. Methotrexate induces astrocyte apoptosis by disrupting folate metabolism in the mouse juvenile central nervous system. Toxicol Lett 2019; 301:146-156. [DOI: 10.1016/j.toxlet.2018.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 01/23/2023]
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Longitudinal assessment of chemotherapy-induced changes in brain and cognitive functioning: A systematic review. Neurosci Biobehav Rev 2018; 92:304-317. [PMID: 29791867 DOI: 10.1016/j.neubiorev.2018.05.019] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 05/08/2018] [Accepted: 05/14/2018] [Indexed: 12/26/2022]
Abstract
In addition to the burden of a life-threatening diagnosis, cancer patients are struggling with adverse side-effects from cancer treatment. Chemotherapy has been linked to an array of cognitive impairments and alterations in brain structure and function ("chemobrain"). In this review, we summarized the existing evidence that evaluate the changes in cognitive functioning and brain with chemotherapy, as assessed using structural and functional MRI-based techniques in a longitudinal design. This review followed the latest PRISMA guidelines using Embase, Medline, PsychINFO, Scopus, and Web of Science databases with date restrictions from 2012 to 2017. Fourteen research articles met the key inclusion criteria: (i) the studies involved adult cancer patients (mean age ≥ 18); (ii) the use of chemotherapy in the treatment of cancer; (iii) pre-post assessment of behavioral and brain-based outcomes; and (iv) abstracts written in English. Effect sizes of subjective and objective cognitive impairments from the reviewed studies were estimated using Cohen's d or z-scores. We calculated percentage of mean change or effect sizes for main neuroimaging findings when data were available. Strength of the correlations between brain alterations and cognitive changes was obtained using squared correlation coefficients. Small to medium effect sizes were shown? on individual tests of attention, processing speed, verbal memory, and executive control; and medium effect sizes on self-report questionnaires. Neuroimaging data showed reduced grey matter density in cancer patients in frontal, parietal, and temporal regions. Changes in brain function (brain activation and cerebral blood flow) were observed with cancer across functional networks involving (pre)frontal, parietal, occipital, temporal, and cerebellar regions. Data from diffusion-weighted MRI suggested reduced white matter integrity involving the superior longitudinal fasciculus, corpus callosum, forceps major, and corona radiate, and altered structural connectivity across the whole brain network. Finally, we observed moderate-to-strong correlations between worsening cognitive function and morphological changes in frontal brain regions. While MRI is a powerful tool for detection of longitudinal brain changes in the 'chemobrain', the underlying biological mechanisms are still unclear. Continued work in this field will hopefully detect MRI metrics to be used as biomarkers to help guide cognitive treatment at the individual cancer patient level.
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Jadvar H. The Use of Imaging in the Prediction and Assessment of Cancer Treatment Toxicity. Diagnostics (Basel) 2017; 7:diagnostics7030043. [PMID: 28726731 PMCID: PMC5617943 DOI: 10.3390/diagnostics7030043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 01/15/2023] Open
Abstract
Multimodal imaging is commonly used in the management of patients with cancer. Imaging plays pivotal roles in the diagnosis, initial staging, treatment response assessment, restaging after treatment and the prognosis of many cancers. Indeed, it is difficult to imagine modern precision cancer care without the use of multimodal molecular imaging, which is advancing at a rapid pace with innovative developments in imaging sciences and an improved understanding of the complex biology of cancer. Cancer therapy often leads to undesirable toxicity, which can range from an asymptomatic subclinical state to severe end organ damage and even death. Imaging is helpful in the portrayal of the unwanted effects of cancer therapy and may assist with optimal clinical decision-making, clinical management, and overall improvements in the outcomes and quality of life for patients.
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Affiliation(s)
- Hossein Jadvar
- Division of Nuclear Medicine, Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
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Cordelli DM, Masetti R, Zama D, Toni F, Castelli I, Ricci E, Franzoni E, Pession A. Central Nervous System Complications in Children Receiving Chemotherapy or Hematopoietic Stem Cell Transplantation. Front Pediatr 2017; 5:105. [PMID: 28555178 PMCID: PMC5430164 DOI: 10.3389/fped.2017.00105] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/25/2017] [Indexed: 01/19/2023] Open
Abstract
Therapy-related neurotoxicity greatly affects possibility of survival and quality of life of pediatric patients treated for cancer. Central nervous system (CNS) involvement is heterogeneous, varying from very mild and transient symptoms to extremely severe and debilitating, or even lethal syndromes. In this review, we will discuss the broad scenario of CNS complications and toxicities occurring during the treatment of pediatric patients receiving both chemotherapies and hematopoietic stem cell transplantation. Different types of complications are reviewed ranging from therapy related to cerebrovascular with a specific focus on neuroradiologic and clinical features.
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Affiliation(s)
- Duccio Maria Cordelli
- Child Neurology and Psychiatry Unit, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - Riccardo Masetti
- Department of Pediatrics, "Lalla Seràgnoli", Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Daniele Zama
- Department of Pediatrics, "Lalla Seràgnoli", Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Francesco Toni
- Neuroradiology Department, IRCCS Institute of Neurological Sciences, Bellaria Hospital, Bologna, Italy
| | - Ilaria Castelli
- Department of Pediatrics, "Lalla Seràgnoli", Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Emilia Ricci
- Child Neurology and Psychiatry Unit, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - Emilio Franzoni
- Child Neurology and Psychiatry Unit, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - Andrea Pession
- Department of Pediatrics, "Lalla Seràgnoli", Hematology-Oncology Unit, University of Bologna, Bologna, Italy
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Sleurs C, Deprez S, Emsell L, Lemiere J, Uyttebroeck A. Chemotherapy-induced neurotoxicity in pediatric solid non-CNS tumor patients: An update on current state of research and recommended future directions. Crit Rev Oncol Hematol 2016; 103:37-48. [PMID: 27233118 DOI: 10.1016/j.critrevonc.2016.05.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 03/21/2016] [Accepted: 05/10/2016] [Indexed: 11/26/2022] Open
Abstract
Neurocognitive sequelae are known to be induced by cranial radiotherapy and central-nervous-system-directed chemotherapy in childhood Acute Lymphoblastic Leukemia (ALL) and brain tumor patients. However, less evidence exists for solid non-CNS-tumor patients. To get a better understanding of the potential neurotoxic mechanisms of non-CNS-directed chemotherapy during childhood, we performed a comprehensive literature review of this topic. Here, we provide an overview of preclinical and clinical studies investigating neurotoxicity associated with chemotherapy in the treatment of pediatric solid non-CNS tumors. Research to date suggests that chemotherapy has deleterious biological and psychological effects, with animal studies demonstrating histological evidence for neurotoxic effects of specific agents and human studies demonstrating acute neurotoxicity. Although the existing literature suggests potential neurotoxicity throughout neurodevelopment, research into the long-term neurocognitive sequelae in survivors of non-CNS cancers remains limited. Therefore, we stress the critical need for neurodevelopmental focused research in children who are treated for solid non-CNS tumors, since they are at risk for potential neurocognitive impairment.
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Affiliation(s)
- Charlotte Sleurs
- Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium; Department of Radiology, University Hospital Leuven, Leuven, Belgium.
| | - Sabine Deprez
- Department of Radiology, University Hospital Leuven, Leuven, Belgium
| | - Louise Emsell
- Department of Radiology, University Hospital Leuven, Leuven, Belgium
| | - Jurgen Lemiere
- Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium; Department of Child & Adolescent Psychiatry, University Hospital Leuven, Leuven, Belgium
| | - Anne Uyttebroeck
- Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium
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McCarthy S. Malaria Prevention, Mefloquine Neurotoxicity, Neuropsychiatric Illness, and Risk-Benefit Analysis in the Australian Defence Force. J Parasitol Res 2015; 2015:287651. [PMID: 26793391 PMCID: PMC4697095 DOI: 10.1155/2015/287651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 09/13/2015] [Indexed: 11/17/2022] Open
Abstract
The Australian Defence Force (ADF) has used mefloquine for malaria chemoprophylaxis since 1990. Mefloquine has been found to be a plausible cause of a chronic central nervous system toxicity syndrome and a confounding factor in the diagnosis of existing neuropsychiatric illnesses prevalent in the ADF such as posttraumatic stress disorder and traumatic brain injury. Overall health risks appear to have been mitigated by restricting the drug's use; however serious risks were realised when significant numbers of ADF personnel were subjected to clinical trials involving the drug. The full extent of the exposure, health impacts for affected individuals, and consequences for ADF health management including mental health are not yet known, but mefloquine may have caused or aggravated neuropsychiatric illness in large numbers of patients who were subsequently misdiagnosed and mistreated or otherwise failed to receive proper care. Findings in relation to chronic mefloquine neurotoxicity were foreseeable, but this eventuality appears not to have been considered during risk-benefit analyses. Thorough analysis by the ADF would have identified this long-term risk as well as other qualitative risk factors. Historical exposure of ADF personnel to mefloquine neurotoxicity now also necessitates ongoing risk monitoring and management in the overall context of broader health policies.
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Affiliation(s)
- Stuart McCarthy
- Headquarters 2nd Division, Australian Army, Randwick Barracks, Randwick, NSW 2031, Australia
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Cole PD, Finkelstein Y, Stevenson KE, Blonquist TM, Vijayanathan V, Silverman LB, Neuberg DS, Sallan SE, Robaey P, Waber DP. Polymorphisms in Genes Related to Oxidative Stress Are Associated With Inferior Cognitive Function After Therapy for Childhood Acute Lymphoblastic Leukemia. J Clin Oncol 2015; 33:2205-11. [PMID: 25987702 DOI: 10.1200/jco.2014.59.0273] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE Survivors of childhood acute lymphoblastic leukemia (ALL) exhibit increased rates of neurocognitive deficits. This study was conducted to test whether interpatient variability in neurocognitive outcomes can be explained by polymorphisms in candidate genes conferring susceptibility to neurocognitive decline. METHODS Neurocognitive testing was conducted in 350 pediatric leukemia survivors, treated on Dana-Farber Cancer Institute ALL Consortium Protocols 95-01 or 00-01. Genomic DNA was isolated from bone marrow collected at remission. Candidate polymorphisms were selected on the basis of prior literature, targeting genes related to drug metabolism, oxidative damage, altered neurotransmission, neuroinflammation, and folate physiology. Single nucleotide polymorphisms were detected using either a customized multiplexed Sequenom MassARRAY assay or polymerase chain reaction-based allelic discrimination assays. Multivariable logistic regression models were used to estimate the effects of genotype on neurocognitive outcomes, adjusted for the effects of demographic and treatment variables. False-discovery rate correction was made for multiple hypothesis testing, indicated as a Q value. RESULTS Inferior cognitive or behavioral outcomes were associated with polymorphisms in three genes related to oxidative stress and/or neuroinflammation: NOS3 (IQ, Q = 0.008; Vocabulary Q = 0.011; Matrix Reasoning Q = 0.008), SLCO2A1 (IQ Q = 0.043; Digit Span Q = 0.006; Block Design Q = 0.076), and COMT (Behavioral Assessment System for Children-2 Attention Q = 0.080; and Hyperactivity Q = 0.084). Survivors homozygous for NOS3 894T, with at least one SLCO2A1 variant G allele or with at least one GSTP1 variant allele, had lower mean estimated IQ scores than those without these genotypes. CONCLUSION These data are consistent with the hypothesis that oxidative damage contributes to chemotherapy-associated neurocognitive decline among children with leukemia.
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Affiliation(s)
- Peter D Cole
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA.
| | - Yaron Finkelstein
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Kristen E Stevenson
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Traci M Blonquist
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Veena Vijayanathan
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Lewis B Silverman
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Donna S Neuberg
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Stephen E Sallan
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Philippe Robaey
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
| | - Deborah P Waber
- Peter D. Cole, Veena Vijayanathan, Albert Einstein College of Medicine, Bronx, NY; Yaron Finkelstein, Hospital for Sick Children, University of Toronto, Toronto; Philippe Robaey, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada; Kristen E. Stevenson, Traci M. Blonquist, Donna S. Neuberg, Dana-Farber Cancer Institute (DFCI); Lewis B. Silverman, Stephen E. Sallan, DFCI, Boston Children's Hospital, Harvard Medical School; and Deborah P. Waber, DFCI, Harvard Medical School, Boston, MA
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Rueda Arenas E, García Corzo J, Franco Ospina L. Hemiparesia y parálisis facial transitorias causadas por metotrexato. An Pediatr (Barc) 2013; 79:385-9. [DOI: 10.1016/j.anpedi.2013.04.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/29/2013] [Accepted: 04/30/2013] [Indexed: 10/26/2022] Open
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Postnov A, Froklage FE, van Lingen A, Reijneveld JC, Hendrikse NH, Windhorst AD, Schuit RC, Eriksson J, Lammertsma AA, Huisman MC. Radiation dose of the P-glycoprotein tracer 11C-laniquidar. J Nucl Med 2013; 54:2101-3. [PMID: 24092938 DOI: 10.2967/jnumed.113.120857] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED Resistance to current drug therapy is an important issue in the treatment of epilepsy. Inadequate access of central nervous system drugs to their targets in the brain may be caused by overexpression or overactivity of multidrug transporters, such as P-glycoprotein (P-gp), at the blood-brain barrier. Laniquidar, an inhibitor of P-gp, has been labeled with (11)C for use in PET studies of P-gp expression in humans. Given potential interspecies differences in biodistribution, the purpose of this study was to ensure safe use of (11)C-laniquidar by determining the dosimetry of (11)C-laniquidar using whole-body PET studies. METHODS Six healthy volunteers were subjected to a series of 10 whole-body PET scans within approximately 70 min. Five blood samples were taken during the series. RESULTS High uptake of (11)C-laniquidar was seen in liver, spleen, kidneys, and lung, whereas brain uptake was low. The effective dose for (11)C-laniquidar was 4.76 ± 0.13 and 3.69 ± 0.01 μSv·MBq(-1) for women and men, respectively. CONCLUSION Biodistribution and measured effective dose indicate that (11)C-laniquidar is a safe tracer for PET imaging, with a total dose of about 2 mSv for a brain PET/CT protocol.
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Affiliation(s)
- Andrey Postnov
- Departments of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
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Reijneveld JC, Klein M, Taphoorn MJ, Postma TJ, Heimans JJ. Improved, personalized treatment of glioma necessitates long-term follow-up of cognitive functioning. Pharmacogenomics 2013; 13:1667-9. [PMID: 23171329 DOI: 10.2217/pgs.12.172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Evenden J. Cognitive impairments and cancer chemotherapy: translational research at a crossroads. Life Sci 2013; 93:589-95. [PMID: 23583572 DOI: 10.1016/j.lfs.2013.03.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 03/12/2013] [Accepted: 03/28/2013] [Indexed: 01/07/2023]
Abstract
Cancer chemotherapy is often associated with cognitive deficits which may remain after the treatment has ended. As more people survive cancer, concern is increasing about the impact of these problems with memory and executive function when they return to everyday life. When chemotherapeutic drugs are administered to healthy animals in dosing regimens modeling those used in humans, cognitive deficits also occur, and these preclinical studies can provide information about the biological mechanisms by which the cancer fighting drugs affect the brain. Evidence from animal studies points to damage to hippocampus, particularly a disruption of neurogenesis, whereas human studies emphasize cognitive deficits associated with impairments in frontal cortical function. This discrepancy may be due more to the tasks selected by researchers, and the choice of biochemical endpoints than inherently different effects of chemotherapy in humans and rodents. These differences in approach must be reconciled if common underlying mechanisms are to be identified, with the hope of leading to novel drug or non-pharmacological treatments. This may be achieved by broadening the scope of human and animal studies, and by looking outside the topic of chemotherapy-induced cancer deficits to learn from the advances being made by studying the effects of stress and somatic disease on brain function, and the cognitive impairments now recognized to result from a wide range of mental and physical illnesses.
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Affiliation(s)
- John Evenden
- WiltonLogic LLC, 101 Wilton Woods Lane, Media, PA 19063, USA.
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Koppelmans V, de Groot M, de Ruiter MB, Boogerd W, Seynaeve C, Vernooij MW, Niessen WJ, Schagen SB, Breteler MMB. Global and focal white matter integrity in breast cancer survivors 20 years after adjuvant chemotherapy. Hum Brain Mapp 2012; 35:889-99. [PMID: 23281152 DOI: 10.1002/hbm.22221] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 07/25/2012] [Accepted: 10/11/2012] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES To date, only four small studies have investigated the effects of adjuvant chemotherapy for breast cancer on the microstructure of cerebral white matter with magnetic resonance imaging (MRI). These studies, which were conducted shortly up to 10 years post-treatment, showed that chemotherapy is associated with focal loss of microstructural white matter integrity. We investigated the long-term effect of chemotherapy on white matter microstructural integrity by comparing the brains of chemotherapy-exposed breast cancer survivors to those of a population-based sample of women without a history of cancer. EXPERIMENTAL DESIGN Diffusion tensor imaging (DTI) MRI (1.5 T) was performed in 187 CMF (cyclophosphamide, methotrexate, and 5-flourouracil) chemotherapy-exposed breast cancer survivors, mean age 64.2 (sd = 6.5) years, who had been diagnosed with cancer on average 21.2 (sd = 4.4) years before, and 374 age-matched cancer-free reference subjects from a population-based cohort study. Outcome measures were whole-brain microstructural integrity as measured by fractional anisotropy and mean/axial/radial diffusivity and focal white matter integrity, which was analyzed with tract-based spatial statistics. All analyses were adjusted for age, cardiovascular risk factors, education, and symptoms of depression. PRINCIPAL OBSERVATIONS No significant group differences were observed in white matter integrity. However, within the breast cancer survivors, time since treatment was inversely associated with lower global and focal white matter integrity. CONCLUSIONS This cross-sectional study suggests that among chemotherapy-exposed breast cancer survivors white matter microstructural integrity deteriorates with accumulating time since treatment. This warrants further investigation.
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Affiliation(s)
- Vincent Koppelmans
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of Psychosocial Research & Epidemiology, Netherlands Cancer Institute/Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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Gehring K, Roukema JA, Sitskoorn MM. Review of recent studies on interventions for cognitive deficits in patients with cancer. Expert Rev Anticancer Ther 2012; 12:255-69. [PMID: 22316373 DOI: 10.1586/era.11.202] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Research has demonstrated that patients with cancer experience cognitive deficits, often due to aggressive anticancer treatments. In this article, we critically review the interventional studies that have been conducted to investigate beneficial effects on cognitive function in cancer patients. Pharmacological agents that have been studied include psychostimulants, such as methylphenidate and modafinil, erythropoietin, and hormonal (supplement) treatments for patients who receive hormonal suppression therapy. In addition, several cognitive rehabilitation programs have been evaluated in cancer patients. Recently, the approach of physical exercise to treat cognitive deficits has received great interest, and findings from novel studies are keenly anticipated. Although, in general, the studies reviewed were well designed, future studies may wish to include larger sample sizes and pay more attention to the accurate assessment of cognitive function.
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Affiliation(s)
- Karin Gehring
- Tilburg University, Department of Medical Psychology and Neuropsychology, Center of Research on Psychology in Somatic Diseases, Prisma Building, 5000 LE, Tilburg, The Netherlands.
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Abstract
Cancer therapy makes patients sick. The therapies that are available to clinicians allow them to successfully control nausea, emesis and pain. However, this is not the case for a number of other symptoms that include fatigue, distractibility, poor memory, and diminished interest in previously pleasurable activities. These symptoms cluster during the course of cancer therapy and impair patient quality of life, limit therapy options and do not always resolve at the cessation of treatment. It is possible to describe the intensity and temporal features of symptoms and assess their relationship with the inflammatory response that is associated with cancer and cancer therapy. At the preclinical level, sophisticated animal models still need to be deployed to study the causal role of inflammation in specific components of cancer-related symptoms. Various approaches can be optimally combined in a translational symptom research pathway to provide a framework for assessing in a systematic manner the neurobehavioral toxicity of existing and newly developed cancer therapies. Ultimately, this knowledge will allow derivation of mechanism-based interventions to prevent or alleviate cancer-related symptoms.
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Drugs and tight junctions: adverse effects and opportunities for new therapeutic approaches. J Pediatr Gastroenterol Nutr 2012; 54:444-5. [PMID: 22197943 DOI: 10.1097/mpg.0b013e3182472372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Fremouw T, Fessler CL, Ferguson RJ, Burguete Y. Preserved learning and memory in mice following chemotherapy: 5-Fluorouracil and doxorubicin single agent treatment, doxorubicin-cyclophosphamide combination treatment. Behav Brain Res 2011; 226:154-62. [PMID: 21930159 DOI: 10.1016/j.bbr.2011.09.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/02/2011] [Accepted: 09/07/2011] [Indexed: 02/07/2023]
Abstract
Clinical studies suggest that chemotherapy is associated with long-term cognitive impairment in some patients. A number of underlying mechanisms have been proposed, however, the etiology of chemotherapy-related cognitive dysfunction remains relatively unknown. As part of a multifaceted approach, animal models of chemotherapy induced cognitive impairment are being developed. Thus far, the majority of animal studies have utilized rats, however, mice may prove particularly beneficial in studying genetic risk factors for developing chemotherapy induced cognitive impairment. Thus, C57BL/6J mice were treated once a week for three weeks with saline, doxorubicin and cyclophosphamide (D&C), doxorubicin (Dox), or 5-fluorouracil (5-FU). Recent and remote contextual fear conditioning and novel object recognition (NOR) was assessed. Despite significant toxic effects as assessed by weight loss, the chemotherapy treated mice performed as well as control mice on all task. As are some humans, C57BL/6J mice may be resistant to at least some aspects of chemotherapy induced cognitive decline.
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Affiliation(s)
- Thane Fremouw
- Department of Psychology, University of Maine, Orono, ME 04469-5742, United States.
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