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Lymphocyte Recovery After Breast Cancer Treatment and Mindfulness-Based Stress Reduction (MBSR) Therapy

Cecile A Lengacher, Kevin E Kip, Janice Post-White, Shirley G Fitzgerald, Cathy Newton, Michelle Barta, Paul B Jacobsen, Melissa M Shelton, Manolete S Moscoso, Versie Johnson-Mallard, Eleanor Harris, Loretta Loftus, Charles Cox, Nancy Le, Matthew Goodman, Julie Djeu, Raymond H. Widen, Barry B. Bercu, Thomas W. Klein

Biological Research for Nursing 2013 DOI: 10.1177/1099800411419245 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Randomized controlled trial Peer reviewed
Sample size 82
Population Women diagnosed with Stage 0–III breast cancer who had completed lumpectomy and adjuvant radiation with or without chemotherapy
Intervention Mindfulness-based stress reduction (MBSR)
Duration 6-week intervention; immune measures assessed at baseline and within 2 weeks after the intervention
Measures Immunostaining and flow cytometry for lymphocyte subsets, activated T cells, and Th1/Th2 cells; phytohemagglutinin (PHA) mitogen stimulation
Topics Meditation
Key findings MBSR(BC) was associated with more rapid recovery of functional T cells capable of mitogen activation and a shift toward a Th1 phenotype, with greater T cell activation and higher CD4+ counts in women less than 12 weeks from treatment completion. Recovery of B and NK cells appeared to occur independently of the stress-reducing intervention.

Abstract

Objectives: This randomized controlled trial was conducted to examine immune recovery following breast cancer (BC) therapy and evaluate the effect of mindfulness-based stress reduction therapy (MBSR) on immune recovery with emphasis on lymphocyte subsets, T cell activation, and production of T-helper 1 (Th1; interferon [IFN]-γ) and T-helper 2 (Th2; interleukin-4 [IL-4]) cytokines.

Method: Participants who completed the study consisted of 82 patients diagnosed with Stage 0–III BC, who received lumpectomy and adjuvant radiation ± chemotherapy. Patients were randomized into an MBSR(BC) intervention program or a control (usual care) group. Immune cell measures were assessed at baseline and within 2 weeks after the 6-week intervention. The numbers and percentages of lymphocyte subsets, activated T cells, and Th1 and Th2 cells in peripheral blood samples were determined by immunostaining and flow cytometry.

Results: Immune subset recovery after cancer treatment showed positive associations with time since treatment completion. The B and natural killer (NK) cells were more susceptible than T cells in being suppressed by cancer treatment. Women who received MBSR(BC) had T cells more readily activated by the mitogen phytohemagglutinin (PHA) and an increase in the Th1/Th2 ratio. Activation was also higher for the MBSR(BC) group if <12 weeks from the end of treatment and women in MBSR(BC) <12 weeks had higher T cell count for CD4 + .

Conclusion: MBSR(BC) promotes a more rapid recovery of functional T cells capable of being activated by a mitogen with the Th1 phenotype, whereas substantial recovery of B and NK cells after completion of cancer treatment appears to occur independent of stress-reducing interventions.

Comparable studies

Other randomized controlled trials on meditation, most cited first.

Study Year Design Participants
Alterations in Brain and Immune Function Produced by Mindfulness Meditation Healthy employees in a work environment 2003 Randomized controlled trial n = 41
Prevention of relapse/recurrence in major depression by mindfulness-based cognitive therapy. Recovered recurrently depressed patients 2000 Randomized controlled trial n = 145
Open hearts build lives: Positive emotions, induced through loving-kindness meditation, build consequential personal resources. Working adults 2008 Randomized controlled trial n = 139
Short-term meditation training improves attention and self-regulation Undergraduate Chinese students 2007 Randomized controlled trial n = 40
Mindfulness-Based Cognitive Therapy for Depression: Replication and Exploration of Differential Relapse Prevention Effects. Recovered recurrently depressed patients 2004 Randomized controlled trial n = 73

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