Lifestyle Behaviors, Perceived Stress, and Inflammation of Individuals With Chronic Graft-Versus-Host Disease

Improving Outcomes in Allogeneic Transplantation and Chronic Graft-versus-Host Disease Patients through Lifestyle Medicine: Current Landscape and Future Directions

Although lifestyle interventions have shown promise in oncology and for cancer survivorship, their potential to improve outcomes in allogeneic hematopoietic cell transplantation (allo-HCT) and chronic graft-versus-host disease (cGVHD) patients remains to be fully explored. Given the high rates of cardiovascular disease, metabolic syndrome, and secondary malignancy in this patient population, lifestyle modifications can serve as a vital frontline defense against chronic diseases. Current research has illuminated the potential supportive role of lifestyle interventions in the solid cancer patient population, which is encouraging future lifestyle medicine research for patients with hematologic malignancies and allo-HCT recipients. Recent studies have indicated the pernicious effects of poor lifestyle choices on the course of cGVHD development and survival. The intersection between certain pillars of lifestyle medicine (ie, nutrition and exercise) and allo-HCT patient outcomes has been more well documented than that of other pillars (ie, social relationships and spirituality). Ongoing randomized trials studying the effects of exercise and nutrition on clinical outcomes in cGVHD and allo-HCT patients may provide important future evidence of the role of lifestyle medicine in this patient population. In this review, we describe the current landscape of lifestyle medicine in allo-HCT and cGVHD, its potential, and propose ways to further develop this evolving field of medicine.

Effect of a lifestyle intervention on telomere length: A systematic review and meta-analysis

BACKGROUND

We conducted a systematic review and meta-analysis to assess the effects of lifestyle intervention on telomere length (TL).

METHOD

Four databases were searched for studies reporting TL in leukocytes, before and after a lifestyle intervention. We computed random-effects meta-analysis on TL within intervention and control group after versus before intervention, and on changes in TL between groups. Sensitivity analyses and Meta-regression were conducted.

RESULTS

We included 20 studies in the systematic review (2995 participants, mean 50.3 years old, 77% women, 2045 following an intervention and 950 controls) and 19 in the meta-analysis. TL were similar at baseline between intervention and control groups. The physical activity ± diet group had an increase in TL (Effect size 0.17, 95%CI 0.03-0.31, p = 0.020) using changes within the intervention group, whereas TL shortened in the control group (-0.32, -0.61 to -0.02, p = 0.037). TL was longer in the physical activity ± diet intervention group (0.24, 0.08-0.40, p = 0.004) compared to controls after the intervention. Sensitivity analysis gave similar results. Meta-regressions demonstrated that combining strength and endurance exercise increased TL more than endurance alone or strength alone.

CONCLUSION

A lifestyle intervention with physical activity ± diet can increase telomere length, independently of population characteristics or baseline TL.

The Role of Spirituality in Patients Undergoing Hematopoietic Stem Cell Transplantation: a Systematic Mixed Studies Review

BACKGROUND

Hematopoietic stem cell transplantation (HSCT) has become the standard treatment for many diseases, but it is an intense and distinctive experience for patients. HSCT-related mortality is present throughout the whole process of transplantation, from pretransplantation to recovery. Long-term rehabilitation and the uncertain risk of death evoke feelings of vulnerability, helplessness, and intense fear. Zimmermann et al. proposed that spiritual well-being is an important dimension of quality of life and that patients at the end stage of life require spiritual support in addition to physical care, psychological care, and social support. Therefore, the purpose of this review is to examine the role of spirituality in the process of HSCT.

METHOD

A systematic mixed studies review (SMSR) was based on Pluye and Hong's framework to understand the role of spirituality in patients' experiences while undergoing HSCT. We use the preferred reporting items for systematic reviews and meta-analyses (PRISMA) statement to report the results of integration.

RESULTS

Fifteen original qualitative studies, 19 quantitative studies, and one mixed method study were included in the systematic mixed studies review. The evidence from the review revealed the following three themes: the spiritual experiences of HSCT patients, the spiritual coping styles of HSCT patients, and the spiritual need changes brought about by HSCT.

DISCUSSION

Few medical institutions currently offer spiritual healing, although HSCT patients with different cultural backgrounds may have different spiritual experiences and spiritual coping styles. Psychotherapists or nurses should be considered to provide spiritual care for patients undergoing HSCT, to help patients cope with disease pressures, promote HSCT patients' comfort, and improve their quality of life.

A Cross-Sectional Exploration of Cytokine-Symptom Networks in Breast Cancer Survivors Using Network Analysis

PURPOSE

The purpose of this study is to (a) visualize the symptom-cytokine networks (perceived stress, fatigue, loneliness, perceived cognitive impairment, daytime sleepiness, sleep quality, and 13 cytokines) and (b) explore centrality metrics of symptom-cytokine networks in breast cancer survivors who completed chemotherapy treatment.

METHODS

Cross-sectional analysis of data collected from 66 breast cancer survivors who were on average three years post chemotherapy completion. Perceived stress, fatigue, loneliness, perceived cognitive impairment, daytime sleepiness, and sleep quality were measured with self-report instruments, and a panel of 13 cytokines was measured from serum using multiplex assays. Symptoms and cytokines were simultaneously evaluated with correlations, network analysis, and community analysis.

RESULTS

Network analysis revealed the nodes with the greatest degree and closeness were interleukin-2, granulocyte-macrophage colony-stimulating factor, interleukin-13, and perceived cognitive impairment. Node betweenness was highest for perceived cognitive impairment and interleukin-2. Community analysis revealed two separate communities of nodes within the network (symptoms and the cytokines). Several edges connected the two communities including perceived cognitive impairment, stress, fatigue, depression, interleukin-2, granulocyte-macrophage colony-stimulating factor, interleukin-8, interleukin-13, and interleukin-10. Partial correlation analyses revealed significant negative relationships between interleukin-2 and fatigue, loneliness, stress, and perceived cognitive impairment (rs = -.27 to -.37, ps < .05) and a significant negative relationship between perceived cognitive impairment and granulocyte-macrophage colony-stimulating factor (r = -.34, p < .01).

CONCLUSIONS

Our analyses support that perceived cognitive impairment, stress, loneliness, depressive symptoms, and fatigue co-occur and extend the literature by suggesting that interleukin-2 may contribute to the underlying mechanistic pathway of these co-occurring symptoms. Our findings add to a growing body of literature that is shifting to study symptoms as they co-occur, or cluster, rather than individual symptoms.