Mindfulness-based stress reduction and cognitive function among breast cancer survivors: A randomized controlled trial

A study on improving cancer-related fatigue and disease-related psychological variables in patients with cervical cancer based on online mindfulness-based stress reduction: a randomized controlled trial

BACKGROUND

The persistent destructive power of cancer-related fatigue (CRF) has been regarded as the biggest influencing factor affecting the postoperative physical and mental health of patients with cervical cancer. During this process, patients might also experience different feelings of disease-related psychological. Therefore, this study aimed to adopt mindfulness-based stress reduction (MBSR) to intervene in patients with cervical cancer, and conducted follow-up for 3 and 6 months to observe the effects of changes in CRF, uncertainty in illness, coping styles, sense of coherence (SOC), and perceived social support (PSS).

METHODS

A randomized controlled trial was conducted in ShengJing Hospital of China Medical University. A total of 102 patients were selected, and 78 patients completed the whole process, including 40 in the experimental group and 38 in the control group. Data were collected according to Cancer Fatigue Scale, Medical Coping Modes Questionnaire, Multidimensional Scale of Perceived Social Support, and Sense of Coherence-13. The change trend and difference of the two groups of research data were compared by repeated measurement analysis of variance. Bonferroni test was used for multiple tests between groups.

RESULTS

The CRF, SOC, and coping styles of the MBSR group showed a decreasing trend (P < 0.001) at after MBSR, 3 months follow-up, and 6 months follow-up compared to the before MBSR. However, the uncertainty in illness of the MBSR group showed a decreasing trend (P < 0.001) at after MBSR compared to the before MBSR, and it rose in 3 months follow-up and 6 months follow-up.

CONCLUSION

MBSR can effectively alleviate the fatigue of CRF after treatment, while improving their psychological environment. Medical workers can consider implementing online MBSR for patients with cervical cancer in their daily rehabilitation nursing, which is beneficial for their recovery.

TRIAL REGISTRATION

China Clinical Trial Registration Center ChiCTR2000040122 (https//www.chictr.org.cn/). Registered on November 21, 2020.

Efficacy of Mindfulness-Based Stress Reduction for Breast Cancer (MBSR(BC)) a Treatment for Cancer-related Cognitive Impairment (CRCI): A Randomized Controlled Trial

Introduction: The Mindfulness-Based Stress Reduction (MBSR) Program for breast cancer survivors (BCS) is designed to enhance cognitive training through formal and informal meditational practices. This randomized clinical trial (RCT) aimed to evaluate if BCS assigned to either the MBSR(BC), Breast Cancer Education Support (BCES), or Usual Care (UC) regimens experienced greater improvements at 6, 12, and 26 weeks on objective and subjective cognitive performance. Methods: BCS (n = 212) randomized to a three-group RCT: MBSR(BC) (n = 91), BCES (n = 90), or UC (n = 31) were assessed on cognitive performance and symptoms at baseline, 6, 12, and 26 weeks. Linear mixed models were fit to evaluate the effects of the MBSR(BC) program, hypothesizing ordered effect improvements: (MBSR[BC] highest, BCES intermediate, UC lowest) along with baseline characteristics evaluated as moderators. Results: Of the BCS (mean age of 57), 73% were White, and non-Hispanic, and 77% received both chemotherapy (CT) and radiation. Cognitive performance improved in all groups. Although there were no statistically significant between-group differences in cognitive outcomes, significant symptom reductions occurred for the MBSR(BC) group (p = 0.003). Within-group effect size analysis at 26 weeks showed substantial improvements in all three groups (effect sizes >0.50) in subjective impairments and quality of life (effect size >0.50) and objective measures of cognitive performance. MBSR(BC) showed the largest within-group effect size in the reduction of fatigue (effect size = 0.81). Effect sizes occurred in the hypothesized direction for 10 of the 18 outcomes. Discussion: Although the MBSR(BC) program did not show significant differences in cognitive performance compared with BCES and UC, all groups improved and reductions in fatigue were beneficial for MBSR(BC). Results suggest that cognitive performance may improve after CT over time considering one's natural history. Furthermore, BCS enrolled in RCTs may be more motivated to improve their health status (NCT02786797).

Influence of stress-specific interventions on biomarker levels and cognitive function in cancer patients: Systematic review and meta-analysis

PURPOSE

Cancer patients' psycho-physiological health is seriously affected by long-term exposure to stress. Many studies have explored the impact of stress-specific interventions on cancer patients' biomarker levels and cognitive functions. However, the current research findings are inconsistent, and their statistical power is limited by the small samples. Therefore, we conducted this meta-analysis to verify the effect of stress-specific interventions on cancer patients.

METHODS

The literature involved nine databases from the inception until January 13, 2024, extracted 19 randomized controlled trials (RCTs). Review Manager (RevMan) 5.4 software was used to perform a meta-analysis, and the revised Cochrane risk of bias tool (RoB2) was utilized for quality evaluation.

RESULTS

Nine RCTs were assessed as having a low risk of bias, and others had a moderate risk. The results showed that stress-specific interventions had beneficial effects on patients' subjective cognition but uncertain impacts on their executive function, tumour necrosis factor-α level, morning cortisol level, and no effect on cortisol at other times, interleukin (IL)-10, IL-8, IL-6, IL-1, and C-reactive protein.

CONCLUSION

More rigorous studies are required to elucidate the influence of stress-specific interventions on biomarker levels. The potential mechanism by which stress-specific interventions affect the cancer patient's cognitive function remains unclear.

Comparative Effects of Exercise Interventions and Mindfulness-Based Interventions for Cognitive Impairment and Quality of Life in Breast Cancer Survivors During or After Cancer Treatment: A Systematic Review and Bayesian Network Meta-analysis

OBJECTIVE

The aim of this network meta-analysis was to compare the improvement effects of various exercise interventions and mindfulness-based interventions to determine the best interventions for the improvement of cognitive impairment.

DESIGN

Seven databases were searched to screen randomized controlled trials of exercise interventions and mindfulness-based interventions to improve cognitive impairment. The network meta-analysis was performed using Revman 5.3, R 4.2.1 and ADDIS 1.16.8 software.

RESULTS

Thirty-four randomized controlled trials involving 14 interventions were included in the study. In terms of cognitive function, except for mindfulness-based stress reduction, all interventions showed significantly greater improvement in cognitive function compared with conventional therapy. Physical activity and Qigong showed better effect in improving executive function. In terms of improving verbal memory, compensatory cognitive training, neurofeedback training, Qigong, and sham Qigong were more effective than other interventions. On performing surface under the cumulative ranking curve analysis, acceptance and commitment therapy, neurofeedback training, Qigong, and mediation had the best effects on cognitive function, quality of life, executive function, and processing speed, respectively.

CONCLUSIONS

Mindfulness-based interventions were found to be more effective than exercise interventions for alleviating cognitive impairment. More robust randomized controlled trials focusing on acceptance and commitment therapy for cognitive impairment are required to support the current evidence.

Effects of psychological intervention on negative emotions and psychological resilience in breast cancer patients after radical mastectomy

Breast cancer (BC)is the most common malignant tumor in women, and the treatment process not only results in physical pain but also significant psychological distress in patients. Psychological intervention (PI) has been recognized as an important approach in treating postoperative psychological disorders in BC patients. It has been proven that PI has a significant therapeutic effect on post-operative psychological disorders, improving patients' negative emotions, enhancing their psychological resilience, and effectively enhancing their quality of life and treatment compliance.

Improve the management of cancer-related cognitive impairment in clinical settings: a European Delphi study

PURPOSE

Cancer-related cognitive impairment (CRCI) is under-addressed by healthcare professionals owing to a lack of clinical management guidelines. This European Delphi study proposes recommendations to healthcare professionals for the management of CRCI in patients with non-central nervous system (non-CNS) cancers.

METHODS

Twenty-two recommendations were developed based on a literature review and authors' clinical experience, split into three categories: screening, cognitive assessment, intervention. The survey included European professionals, experts in CRCI. The Delphi method was used: experts rated the clinical relevancy of recommendations on a 9-point Likert scale in three rounds. A recommendation was accepted if all votes were between 7 and 9. Recommendations not accepted in round 1 and round 2 were deleted, or modified and rated in round 3.

RESULTS

Eighteen professionals (psychologists, physicians, researchers) voted and accepted 15 recommendations. Experts recommended the systematic screening of CRCI, followed by a short objective cognitive assessment, if complaints screened. A comprehensive evaluation is recommended if CRCI persists 6 months post-treatment. Cognitive rehabilitation, physical activity, meditative-movement therapy, and multimodal intervention should be offered. Recommendations about frequency and duration of interventions, the professional to administer cognitive rehabilitation and the use of meditation and cognitive training without psychoeducation were not accepted.

CONCLUSIONS

This survey provides 15 recommendations to assist healthcare professionals in detecting, assessing and offering interventions for CRCI.

IMPLICATIONS FOR CANCER SURVIVORS

These recommendations should be included in supportive care to help healthcare professionals to detect CRCI and propose the best available intervention for patients with cognitive complaints. Developing CRCI management in clinical settings would improve patients' quality of life.

Effect of mindfulness-based therapy on spiritual well-being in breast cancer patients: a randomized controlled study

BACKGROUND

Spiritual well-being is directly related to the quality of life in breast cancer patients. Mindfulness-based therapy interventions can decrease distress levels in women with breast cancer, while improving spiritual well-being.

OBJECTIVE

To investigate the effect of mindfulness-based therapy on spiritual well-being in breast cancer patients.

METHODS

This randomized controlled clinical trial was conducted in accordance with the Consolidated Standards of Reporting Trials. A total of 70 participants were enrolled from September, 2021 to July, 2022. Primary outcome included spiritual well-being, and secondary outcome included quality of life. The data were collected using the Patient Sociodemographic and Medical Data Form and Functional Assessment of Chronic Illness Therapy-Spiritual Well-Being (SpWB) (FACIT-Sp Version 4). In the statistical analysis, the independent sample t test and paired sample t test were used to examine the intervention effect on primary and secondary outcomes, according to numbers, percentage, mean, standard deviation, and conformity to normal distribution.

RESULTS

The average age of the therapy group was 42.22 ± 6.86, and the control group was 41.64 ±  6.04. The average score of meaning (12.25 ± 3.03), overall score average of the spiritual well-being (31.56 ± 8.90), the emotional well-being (13.46 ± 5.78) and physical well-being (16.71 ± 5.59), and overall average score of the quality of life (66.98 ± 17.72) of the therapy group was statistically significantly higher (p < 0.05).

CONCLUSION

The mindfulness-based training may enhance the spiritual well-being and quality of life of breast cancer patients. Nurses should be encouraged for mindfulness-based training sessions to make it a widespread practice, and to regularly evaluate the results.

TRIAL REGISTRATION

NCT05057078 (date: September 27, 2021).

Young Adults' Lived Experiences with Cancer-Related Cognitive Impairment: An Exploratory Qualitative Study

Cancer-related cognitive impairment (CRCI; e.g., disrupted memory, executive functioning, and information processing) affects many young adults, causing significant distress, reducing quality of life (QoL), and thwarting their ability to engage in professional, recreational, and social experiences. The purpose of this exploratory qualitative study was to investigate young adults' lived experiences with CRCI, and any strategies (including physical activity) they use to self-manage this burdensome side effect. Sixteen young adults (Mage = 30.8 ± 6.0 years; 87.5% female; Myears since diagnosis = 3.2 ± 3) who reported clinically meaningful CRCI whilst completing an online survey were interviewed virtually. Four themes comprising 13 sub-themes were identified through an inductive thematic analysis: (1) descriptions and interpretations of the CRCI phenomenon, (2) effects of CRCI on day-to-day and QoL, (3) cognitive-behavioural self-management strategies, and (4) recommendations for improving care. Findings suggest CRCI is detrimental to young adults' QoL and must be addressed more systematically in practice. Results also illuminate the promise of PA in coping with CRCI, but research is needed to confirm this association, test how and why this may occur, and determine optimal PA prescriptions for young adults to self-manage their CRCI.

The impact of mindfulness on cancer-related cognitive impairment in breast cancer survivors with cognitive complaints

BACKGROUND

Interventions that target cancer-related cognitive impairment (CRCI) to improve the quality of life of cancer survivors are needed. In this study, the potential of a mindfulness-based intervention to reduce CRCI in breast cancer survivors, compared with physical training and a wait list control group, was investigated.

METHODS

Breast cancer survivors with cognitive complaints (N = 117) were randomly allocated to a mindfulness (n = 43), physical training (n = 36), or wait list control condition (n = 38). Participants completed neuropsychological tests and questionnaires before the intervention, immediately after, and 3 months after intervention. The primary outcome measure was the change in cognitive complaints over time. Secondary outcomes were objective cognitive impairment and psychological well-being. All outcomes were compared between groups over time using linear mixed models, including participants with missing values.

RESULTS

Of the 117 included participants, 96 completed the three assessments. Participants in the three groups reported decreased cognitive complaints after intervention, without group differences. There were no between-group differences in objective cognitive impairment after intervention compared with baseline. Compared with the wait list control group, participants reported increased mindfulness skills and reduced emotional distress after mindfulness and reduced emotional distress and fatigue after physical training.

CONCLUSION

Contrary to the hypothesis, all groups reported an improvement in cognitive complaints over time. It is suggested that priming and acknowledgment of CRCI might alter the experience of cognitive impairment. Additionally, both mindfulness-based intervention and physical training can improve psychological well-being of breast cancer survivors with cognitive complaints.

Impact of non-pharmacological interventions on cognitive impairment in women with breast cancer: A systematic review and meta-analysis

Objective

This study aimed to examine the characteristics of research conducted on nonpharmacological interventions for cognitive impairment in patients with breast cancer and identify the primary effects of nonpharmacological interventions through a systematic review and meta-analysis.

Methods

Five electronic databases were searched to identify all randomized controlled trial studies until September 30, 2022, using the key terms "breast cancer," "cognitive disorders," and their possible variations. The Cochrane Risk of Bias tool was used to assess risk of bias. The effect sizes were calculated in Hedges' g. Potential moderators influencing the intervention effects were explored.

Results

Twenty-three studies were included in the systematic review, and 17 studies were included in the meta-analysis. Among the nonpharmacological interventions for patients with breast cancer, cognitive rehabilitation and physical activity were the most common, followed by cognitive behavioral therapy. The meta-analysis indicated that nonpharmacological interventions had a significant effect on attention (g ​= ​0.83; 95% CI: 0.14 to 1.52; I ² ​= ​76%), immediate recall (g ​= ​0.33; 95% CI: 0.18 to 0.49; I ² ​= ​0%), executive function (g ​= ​0.25; 95% CI: 0.13 to 0.37; I ² ​= ​0%), and processing speed (g ​= ​0.44; 95% CI: 0.14 to 0.73; I ² ​= ​51%) among objective cognitive functions, as well as subjective cognitive function (g ​= ​0.68; 95% CI: 0.40 to 0.96; I ² ​= ​78%). Intervention type and mode of delivery were potential moderators for the effects of nonpharmacological interventions on cognitive functions.

Conclusions

Nonpharmacological interventions can improve subjective and objective cognitive functioning among patients with breast cancer undergoing cancer treatment. Therefore, it is necessary to provide nonpharmacological interventions by screening patients at high risk of cancer-related cognitive impairment.

Systematic review registration

CRD42021251709.

Chemotherapy: how to reduce its adverse effects while maintaining the potency?

Chemotherapy is one of the widely used anticancer treatments that involves the use of powerful cytotoxic drugs to stop tumor growth by targeting rapidly dividing cells through various mechanisms, which will be elucidated in this review. Introduced during the early twentieth century, chemotherapy has since lengthened the longevity of innumerable cancer patients. However, the increase in lifespan is at the expense of quality of life as patients are at risk of developing short-term and long-term side effects following chemotherapy, such as alopecia (hair loss), chemotherapy-induced peripheral neuropathy, chemotherapy-induced nausea and vomiting, cardiotoxicity, diarrhea, infertility, and chemo brain. Currently, a number of these chemotherapy-induced adverse effects are managed through supportive care and approved treatments, while the rest of the side effects are unavoidable. Hence, chemotherapeutic drugs associated with inevitable side effects are only administered when their therapeutic role outweighs their chemotoxicity, thus severely limiting the potency of chemotherapy in treating malignancy. Therein, the potential approaches to alleviating side effects of chemotherapy ranging from pharmaceutical drugs to alternative therapies will be discussed in this review in hopes of increasing the tolerance and effectiveness of future chemotherapeutic treatments.

Interventions promoting cognitive function in patients experiencing cancer related cognitive impairment: A systematic review

OBJECTIVE

To examine the effect of interventions used to enhance cognitive function in patients experiencing cancer-related cognitive impairment.

METHODS

Studies including adults with a non-metastatic cancer who have received chemotherapy as part of their treatment and who have undergone interventions targeting cancer-related cognitive impairment were included. Studies involving patients with metastatic cancer and pre-existing cognitive deficits were excluded. Academic Search Complete, CINAHL Plus with full text, MEDLINE, Education Full Text, PsycARTICLES, PsycINFO, and ERIC were searched for studies published between January 2011 and September 2022. Data extraction and quality appraisal were conducted by two authors and cross-checked by the review team. Quality appraisal was conducted using 12 items from the Mixed Methods Appraisal Tool. Findings were presented narratively without meta-analysis.

RESULTS

Thirty-one studies were included. Interventions were categorised as integrative/complementary, cognitive behavioural therapy and compensatory strategies, exercise, psychoeducational/psychosocial, brain-training, and pharmacological. Over 100 instruments were identified, including the Functional Assessment of Cancer Therapy-Cognitive, Trail Making Tests-A and B, and instruments measuring secondary outcomes, including depression. Instruments often measured attention and concentration, language, memory, executive function, and/or patient-reported outcomes. Improvements were reported, with most studies measuring some or various aspects of cognitive functioning and very few studies measuring all domains of cognitive functioning, making it difficult to draw definitive conclusions about effectiveness.

CONCLUSIONS

Various interventions are available to treat cancer-related cognitive impairment. Outcome measurement was inconsistent and future research should prioritise using standardised measures. Current evidence, whilst not being definitive, suggests that certain interventions show greater promise than others, including cognitive behavioural therapy and brain training.

Global trends of research on depression in breast cancer: A bibliometric study based on VOSviewer

Background

Depression is common psychiatric morbidity in breast cancer survivors, seriously affecting patients’ quality of life and mental health. A growing body of research has investigated depression in breast cancer. However, no visual bibliometric analysis was conducted in this field. This study aimed to visualize the literature to identify hotspots and frontiers in research on breast cancer and depression.

Methods

The publications related to depression in breast cancer were retrieved in the Web of Science Core Collection between 1 January 2002 and 17 March 2022. VOSviewer was used to identify co-occurrences and collaborations among countries, institutions, and keywords. CiteSpace was used to detect keyword bursts.

Results

A total of 7,350 articles and reviews related to depression in breast cancer were identified. From 2002 to 2022, the United States and the People’s Republic of China were the most productive countries in this field. The University of California, Los Angeles, and the University of Toronto were the most productive institutions in this field. The Journal of Psycho-oncology, followed by Supportive Care in Cancer and the Journal of Clinical Oncology, had the most publications on depression in breast cancer. Of the top 10 journals, seven were from the United States, two were from England, and one was from Germany. Five research hotspots of depression in breast cancer were identified by co-word analysis. Research on post-traumatic growth, spiritual interventions, cognitive-behavioral therapy, physical activity, and symptom cluster management of depression in breast cancer was relatively mature in the core hotspots. Burst detection of keywords on depression in breast cancer showed the latest hotspots, such as mental health, cancer survivor mortality, and activity.

Conclusion

The research on depression in breast cancer is growing. Attention should be paid to the latest hotspots, such as mental health, cancer survivor, mortality, exercise, and physical activity.

Mindfulness-Based Stress Reduction in Breast Cancer Survivors with Chronic Neuropathic Pain: A Randomized Controlled Trial

Objectives

The purpose of this study was to compare the effects of group-delivered mindfulness-based stress reduction as compared to a waitlist control group among breast cancer survivors living with CNP.

Methods

A randomized controlled trial design was applied, and outcomes collected included pain, emotional function, quality of life, and global impression of change.

Results

A total of 98 women were randomized and included in analyses. The sample included 49 women in the mindfulness-based stress reduction group, and 49 women in the waitlist control group. The intervention group participants (mean age 51.3 years, standard deviation = 11.4) and waitlist participants (mean age 55.1 years, standard deviation = 9.6) reported an average pain duration of approximately three years. No significant differences were found on the primary outcome of the proportions of women with reduced pain interference scores from the time of randomization to 3 months after the intervention was received. No significant changes were found among secondary outcomes.

Conclusion

Our randomized clinical trial did not find significant benefits of group-based mindfulness-based stress reduction for the management of CNP. The current study findings should be replicated and are important to consider given ongoing concerns that nonsignificant results of mindfulness-based stress reduction are often unpublished.