Trends in integrative medicine and health consults: differences between cancer survivors and patients without cancer.

OBJECTIVES: The objectives were to compare patients with and without cancer who sought an integrative health (IH) consult and reasons for seeking a consult. DESIGN: Descriptive cross-sectional study that employed a secondary analysis of an integrative health database supplemented by a retrospective medical record review. SETTING/LOCATION: Integrative Medicine and Health program in a Southwestern United States academic medical center. SUBJECTS: Eight hundred thirty-nine adults over the age of 18 seeking IH consultation. RESULTS: The number of complementary therapies reported prior to consult were not significantly different between groups. The most reported complementary therapies used by cancer survivors were multivitamins, exercise, and turmeric. Patients without cancer reported significantly higher pain levels than cancer survivors. Cancer survivors reported significantly higher energy, sleep levels, overall health, spiritual wellbeing, and significantly better relationships compared to patients without cancer. Cancer survivors reported fatigue and cancer as the top reasons for IH consult. CONCLUSION: Participants without cancer reported higher levels of pain and lower levels of energy, sleep, overall health, spiritual wellbeing, and relationships compared to cancer survivors. However, cancer survivors still reported levels of unmanaged symptoms. Complementary therapy use prior to IMH consult was similar between groups; however, IMH providers recommended more treatments for patients without cancer. Our results highlight that more evidence is needed to guide IMH recommendations, especially for cancer survivors who may still be in treatment. Additionally, our results support evidence-based recommendations that all cancer survivors should be assessed for complementary therapy use and provided counseling by qualified providers on their advantages and limitations.

Ginseng as a Treatment for Fatigue: A Systematic Review.

BACKGROUND: Millions of people with chronic illness suffer from fatigue. Fatigue is a complex, multidimensional symptom with poorly understood causes, wide variations in severity among individuals, and negative effects on multiple domains of daily life. Many patients with fatigue report the use of herbal remedies. Ginseng is one of the most widely used because it is believed to improve energy, physical and emotional health, and well-being. OBJECTIVE: To systematically review the published evidence to evaluate the safety and effectiveness of the two types of Panax ginseng (Asian [Panax ginseng] and American [Panax quinquefolius]) as treatments for fatigue. DESIGN: PubMed, CINAHL (Cumulative Index to Nursing and Allied Health), Ovid MEDLINE, and EMBASE databases were searched using Medical Subject Heading and keyword terms, including ginseng, Panax, ginsenosides, ginsenoside* (wild card), fatigue, fatigue syndrome, cancer-related fatigue, and chronic fatigue. Studies were included if participants had fatigue, had used one of the two Panax ginsengs as an intervention, and had scores from a self-report fatigue measure. Two reviewers independently assessed each article at each review phase and met to develop consensus on included studies. Risk of bias was assessed using version 5.3 of the Cochrane Collaboration Review Manager (RevMan), and results were synthesized in a narrative summary. RESULTS: The search strategy resulted in 149 articles, with 1 additional article located through review of references. After titles, abstracts, and full text were reviewed, 139 articles did not meet inclusion criteria. For the 10 studies reviewed, there was a low risk of adverse events associated with the use of ginseng and modest evidence for its efficacy. CONCLUSIONS: Ginseng is a promising treatment for fatigue. Both American and Asian ginseng may be viable treatments for fatigue in people with chronic illness. Because of ginseng's widespread use, a critical need exists for continued research that is methodologically stronger and that includes more diverse samples before ginseng is adopted as a standard treatment option for fatigue.

Computerized patient-reported symptom assessment in radiotherapy: a pilot randomized, controlled trial.

PURPOSE: Computer-based, patient-reported symptom survey tools have been described for patients undergoing chemotherapy. We hypothesized that patients undergoing radiotherapy might also benefit, so we developed a computer application to acquire symptom ratings from patients and generate summaries for use at point of care office visits and conducted a randomized, controlled pilot trial to test its feasibility. METHODS: Subjects were randomized prior to beginning radiotherapy. Both control and intervention group subjects completed the computerized symptom assessment, but only for the intervention group were printed symptom summaries made available before each weekly office visit. Metrics compared included the Global Distress Index (GDI), concordance of patient-reported symptoms and symptoms discussed by the physician and numbers of new and/or adjusted symptom management medications prescribed. RESULTS: One hundred twelve patients completed the study: 54 in the control and 58 in the intervention arms. There were no differences in GDI over time between the control and intervention groups. In the intervention group, more patient-reported symptoms were actually discussed in radiotherapy office visits: 46/202 vs. 19/230. A sensitivity analysis to account for within-subjects correlation yielded 23.2 vs. 10.3 % (p = 0.03). Medications were started or adjusted at 15.4 % (43/280) of control visits compared to 20.4 % (65/319) of intervention visits (p = 0.07). CONCLUSIONS: This computer application is easy to use and makes extensive patient-reported outcome data available at the point of care. Although no differences were seen in symptom trajectory, patients who had printed symptom summaries had improved communication during office visits and a trend towards a more active symptom management during radiotherapy.

Adaptation and testing of instruments to measure cervical cancer screening factors among Vietnamese immigrant women.

PURPOSE: Vietnamese American women diagnosed with cervical cancer are more likely to have advanced cancer than non-Hispanic White women. We sought to (a) develop a culturally sensitive Vietnamese translation of the Revised Susceptibility, Benefits, and Barriers Scale; Cultural Barriers to Screening Inventory; Confidentiality Issues Scale; and Quality of Care from the Health Care System Scale and (b) examine the psychometric properties. DESIGN: Cross-sectional study with 201 Vietnamese immigrant women from the Portland, Oregon, metropolitan area. METHOD: We used a community-based participatory research approach and the U.S. Census Bureau's team approach to translation. RESULTS: Cronbach's alpha ranged from .57 to .91. The incremental fit index ranged from .83 to .88. DISCUSSION AND CONCLUSIONS: The instruments demonstrated moderate to strong subscale internal consistency. Further research to assess structural validity is needed. IMPLICATIONS FOR PRACTICE: Our approaches to translation and psychometric examination support use of the instruments in Vietnamese immigrant women.

The role of patient pain and physical function on depressive symptoms in couples with lung cancer: a longitudinal dyadic analysis.

Drawing on the Developmental-Contextual Model (Berg & Upchurch, 2007), we examined the association between changes in patient physical health (pain severity and physical function) and changes in depressive symptoms in couples with lung cancer over a 12-month period. Patients and their spouses or partners (n = 77) were recruited using rapid case ascertainment and completed five waves of data collection (baseline, 3, 6, 9, and 12 months). Multilevel modeling was used to examine aggregate and time-varying effects of patient physical health on depressive symptoms. Results indicated that for patients and spouses, patient-rated mean pain severity was significantly positively associated with patient and spouse depressive symptoms and patient-rated mean physical function was significantly negatively associated with patient and spouse depressive symptoms. More importantly, increases in patient pain severity and declines in patient physical function were significantly associated with increases in patient depressive symptoms. However, only declines in patient physical function were significantly associated with increases in spouse depressive symptoms. These time-varying effects remained even when controlling for patient gender, patient age, patient stage of disease, spouse physical health, and relationship quality. Findings suggest the importance of examining the changing illness context on the couple as a unit and the complexity of interpersonal processes in the presence of a life-threatening illness.

Symptom incongruence trajectories in lung cancer dyads.

CONTEXT: There is little known about the pattern of change in patient-family member symptom incongruence across the lung cancer trajectory. OBJECTIVES: This study examined trajectories of patient-family member incongruence in perceptions of patient physical function, pain severity, fatigue, and dyspnea in lung cancer dyads and explored the association with family member grief after patient death. METHODS: Lung cancer patients and their family members providing care (n = 109 dyads) rated patient symptoms and physical function five times over 12 months. Symptom incongruence trajectories were analyzed using multilevel modeling. RESULTS: Patient-family member incongruence did not significantly change over time, on average, except in the case of patient physical function where incongruence significantly declined. There was significant variability around trajectories of incongruence for all symptoms except fatigue. Exploratory analysis on a subsample of 22 bereaved family members found that incongruence regarding patient fatigue was associated with family member grief two months after patient death. CONCLUSION: Findings suggest the importance of modeling symptom incongruence over time and taking a dyadic approach to the illness context to identify interventions that promote adjustment and quality of life for both patient and family member.

Frailty in older breast cancer survivors: age, prevalence, and associated factors.

PURPOSE/OBJECTIVES: To describe frailty and associated factors in breast cancer survivors (BCSs) and evaluate whether BCSs are frail at an earlier age than female participants from in two large epidemiological studies. DESIGN: Descriptive, cross-sectional. SETTING: School of Nursing at Oregon Health and Science University. SAMPLE: 216 BCSs aged 53-87 years who were a mean 5-7 years post-treatment and not currently participating in exercise. METHODS: Performance tests, clinical measures, and self-reported questionnaires provided baseline data on five criteria for frailty. MAIN RESEARCH VARIABLES: Frailty was defined as meeting three of the five criteria of the frailty phenotype: shrinking, exhaustion, low activity, slowness, and weakness. Data were compared to published data from women in the Cardiovascular Health Study (CHS) and Women's Health and Aging Study (WHAS). FINDINGS: Eighteen percent of BCSs aged 70-79 years were frail compared to 11% of women of the same age in the CHS and WHAS. Frailty was more common at a younger age in BCSs, and more BCSs were frail in all age groups compared to women in the CHS study until about age 80 years, when prevalence of frailty was similar in the two groups. Fifty percent of BCSs were classified as prefrail because they met one or two of the five frailty criteria. Higher body mass index increased the odds of frailty, and higher physical activity decreased the odds of frailty (odds ratio [OR] = 1.12, p = 0.003, and OR = 0.99, p = 0.000, respectively). CONCLUSIONS: Frailty and prefrailty may be common in BCSs and may occur at an earlier age than in adults without a history of breast cancer. IMPLICATIONS FOR NURSING: Nurses should be alert to prefrailty or frailty at a younger age in BCSs. Awareness and early intervention may delay or prevent frailty. KNOWLEDGE TRANSLATION: BCSs may be frail even when they are not yet considered older adults. Prefrailty in BCSs is important to recognize because it suggests impending frailty that could lead to reduced physical functioning or poor health. Prefrailty and frailty could be assessed in BCSs aged 50 years and older in a clinical setting using a few questions about weight, fatigue, and activity levels, in addition to simple tests of walking speed and grip strength, if warranted.

A community-based participatory research approach to understanding pap testing adherence among Vietnamese American immigrants.

OBJECTIVE: To explore factors potentially influencing Pap testing practices among Vietnamese American immigrant women (VIW, foreign-born) and describe their awareness of cervical cancer screening resources in their community. DESIGN: Descriptive study guided by the ecological model and community-based participatory research principles. SETTING: Portland, Oregon, metropolitan area. PARTICIPANTS: Vietnamese American immigrant women (211) who were age 21 and older. METHODS: We used descriptive statistics and logistic regression analyses to analyze a self-administered questionnaire that was pretested and translated using a team approach. RESULTS: Approximately 74% of VIW who completed the survey reported at least one Pap test, and 69% reported Pap testing history adherent to national guidelines. The factor most strongly associated with Pap testing receipt was suggestion from a friend, followed by longer residency in the United States, lower perceived common barriers, and lower perceived cultural barriers, for example, lack of family support and use of Eastern/Asian medicine. The factor most strongly associated with guideline adherence was having health insurance, followed by a recommendation from a physician or nurse practitioner. Only 11% of VIW knew where to obtain a free or low-cost Pap tests. CONCLUSION: Nurses can influence rates of Pap testing among VIW by providing health education through outreach programs targeted at lay health workers and their social networks, identifying at-risk patients such as recently immigrated women, reducing perceived common and cultural barriers to Pap testing, and helping women seek alternative payment options if they lack health insurance. Primary health care providers should be reminded of their essential role in increasing Pap testing adherence.

The Exercising Together project: design and recruitment for a randomized, controlled trial to determine the benefits of partnered strength training for couples coping with prostate cancer.

Prostate cancer can threaten quality of life for the patient and his spouse and the quality of his marital relationship. The purpose of our study is to evaluate the effects of "Exercising Together" - a partnered strength training program for married couples coping with prostate cancer - on the physical and emotional health of prostate cancer survivors (PCS) and their spouses and on marital quality. We are conducting a 6-month randomized controlled trial with two groups: 1) Exercising Together - a progressive, supervised strength training program and 2) a usual care control condition. The primary aims of this exploratory study are to: 1) Determine the effect of partnered strength training on physical and emotional health (muscle strength, physical function, body composition and self-report physical and mental health) in PCS, 2) Determine the effect of partnered strength training on physical and emotional health in spouses and 3) Explore the effect of partnered strength training on marital quality (incongruence, communication, relationship quality, intimacy) of the PCS and spouse. Target accrual has been met in this study with 64 couples enrolled and randomized to exercise (n=32) or usual care (n=32) groups. This study is the first to examine the feasibility of this exercise format in both the chronically ill patient and spouse and explore benefits at the individual and couple level.

The effect of resistance training on muscle strength and physical function in older, postmenopausal breast cancer survivors: a randomized controlled trial.

INTRODUCTION: Older breast cancer survivors (BCS) report more falls and functional limitations than women with no cancer history. Exercise training could reduce risk factors for future falls and disability. METHODS: We conducted a randomized, controlled trial in 106 early-stage, postmenopausal BCS who were ≥50 years old at diagnosis and post-treatment. Women were randomly assigned to a 1-year resistance + impact exercise program or a stretching placebo program. Endpoints were one repetition maximum bench press and leg press strength, timed five chair stands, 4 m usual walk speed, timed stance tests, handgrip strength, self-report physical function, and fatigue. We also examined the influence of age, adjuvant hormone therapy use, and exercise adherence on study outcomes. RESULTS: Women in the resistance + impact training program significantly improved maximal leg (p <0 .02) and bench (p <0 .02) press strength compared to the stretching group. Women who attended 50% or more of prescribed resistance training sessions had significantly better changes in maximal strength measures compared to less adherent women. CONCLUSIONS: Resistance + impact exercise is superior to stretching at improving maximal muscle strength and exercise adherence contributes to the degree of improvement. IMPLICATIONS FOR CANCER SURVIVORS: Older BCS can safely engage in resistance exercise that improves lower and upper body strength, thereby reducing a risk factor for falls and future disability. However, the ability of resistance training to shift other indices of fall and disability risk, i.e., balance and function, is unclear. Strategies to promote adherence to resistance training could lead to greater improvements in strength.

Informal caregiving in Hematopoietic Blood and Marrow Transplant patients.

PURPOSE: Hematopoietic cell transplant patients are among the most vulnerable and acutely ill cancer populations (Bevans et al., 2008). The responsibility of caring for the daily physical and psychosocial needs of these patients after transplant is placed mostly on family caregivers (Williams, 2007). The purpose of this descriptive correlational research study was to describe caregiving experiences of 56 caregivers of HCT patients 3-12 months following transplant. METHODS & SAMPLE: Patients and caregivers were recruited from two west coast regional transplant programs in the United States. Variables studied were: relationship quality, rewards of caregiving, predictability, role strain, patient function, caregiving activities, and caregiver quality of life (QOL). KEY RESULTS: Results indicated that all areas of role strain are significantly negatively correlated with caregiver's QOL. Predictability was negatively associated with problem solving and emotional strain indicating that as the level of predictability of the situation decreases, caregiver strain and problem solving increase. Predictability was positively correlated to caregiver QOL indicating that as the situation is more predictable caregiver QOL increases. Emotional strain, problem-solving strain, and usual care strain were significantly positively related, indicating that emotional strain and problem-solving strain increased together. As usual care strain increased, so did problem-solving strain and emotional strain. CONCLUSIONS: Suggestions for interventions include assessing and responding to caregiver issues such as emotional strain, problem-solving strain, usual care strain, unpredictability, and QOL. Examples of caregiver-focused interventions include providing timely appropriate information about these caregiver concerns including elements that make the caregiving situation predictable, and incorporating best practices for preventing and minimizing caregiver emotional strain.

Mammography decision making in older women with a breast cancer family history.

PURPOSE: This study's purpose is to describe and explain how women 55 years of age and older with a family history of breast cancer make screening mammography decisions. DESIGN: A qualitative design based on grounded theory. This purposeful sample consisted of 23 women 55 years of age or older with one more first-degree relatives diagnosed with breast cancer. METHOD: Open-ended interviews were conducted with 23 women 55 years of age and older with a family history of breast cancer using a semistructured interview guide. Transcribed interview data were analyzed using constant comparative analysis to identify the conditions, actions, and consequences associated with participant's screening mammography decision making. FINDINGS: Women reported becoming aware of their breast cancer risk usually due to a triggering event such as having a family member diagnosed with breast cancer, resulting in women "guarding against cancer." Women's actions included having mammograms, getting health check-ups, having healthy behaviors, and being optimistic. Most women reported extraordinary faith in mammography, often ignoring negative mammogram information. A negative mammogram gave women peace of mind and assurance that breast cancer was not present. Being called back for additional mammograms caused worry, especially with delayed results. CONCLUSIONS: The "guarding against cancer" theory needs to be tested in other at-risk populations and ultimately used to test strategies that promote cancer screening decision making and the adoption of screening behaviors in those at increased risk for developing cancer. CLINICAL RELEVANCE: Women 55 years of age and older with a breast cancer family history need timely mammogram results, mammography reminders, and psychosocial support when undergoing a mammography recall or other follow-up tests.

A review of exercise interventions to improve bone health in adult cancer survivors.

INTRODUCTION: Cancer-treatment induced bone loss and associated fracture risk is a growing concern for cancer survivors. Exercise offers a non-pharmacologic strategy for preserving bone health during and after treatment, but only until recently has it been studied for its efficacy and safety in cancer survivors. The purpose of this review is to provide an early qualitative evaluation of exercise trials in adult cancer survivors with bone health as a primary or secondary endpoint. METHODS: Databases were searched for exercise trials in adult cancer survivors that reported data on bone health (bone mineral density (BMD) and/or bone remodeling markers) as an outcome measure and were published and indexed prior to January 1st, 2010. Data relevant to evaluation of study design, sample, exercise protocol, bone health assessment, statistical approach and findings were extracted, summarized and interpreted. RESULTS: Eight trials were identified that met criteria for inclusion in the review. While most studies were conducted in breast cancer survivors, remaining study attributes including rigor, design, exercise program characteristics and length varied considerably across studies. Only three of the eight studies were controlled exercise trials with usual care control groups. Of these, two reported significant group x time interactions where aerobic exercise preserved BMD at the spine or whole body compared to losses in controls and none reported exercise benefits at the hip. CONCLUSIONS: The recent emergence of exercise studies in cancer survivors with bone outcomes highlights the importance of this area of cancer survivorship. Collectively, the studies are limited in number and are too varied to warrant conclusions regarding the skeletal benefits of exercise during or after cancer treatment, though early results are encouraging and more rigorous study should follow.

Does muscle-derived interleukin-6 mediate some of the beneficial effects of exercise on cancer treatment-related fatigue?

PURPOSE/OBJECTIVES: To review evidence that muscle-derived interleukin-6 (IL-6) mediates some of the beneficial effects of exercise on cancer treatment-related fatigue (CTRF). DATA SOURCES: Electronic nursing, psychology, and medicine databases. DATA SYNTHESIS: Fatigue is a common and often debilitating symptom associated with cancer treatment. Although the molecular mechanisms underlying CTRF have yet to be fully elucidated, it may be akin to the fatigue associated with "sickness behavior," which is initiated by the production of the proinflammatory cytokines interleukin-1 beta (IL-1 beta) and tumor necrosis factor alpha (TNF-alpha). Physical exercise has been shown to decrease fatigue levels in patients with cancer undergoing treatment. Skeletal muscle selectively produces IL-6 during exercise, and muscle-derived IL-6 can decrease the production and activity of IL-1 beta and TNF-alpha. Thus, the anti-inflammatory effects of muscle-derived IL-6 may be a mechanism underlying the observed beneficial effects of exercise on CTRF. CONCLUSIONS: Further studies are needed to determine whether the anti-inflammatory effects of exercise underlie its beneficial effects on CTRF. IMPLICATIONS FOR NURSING: Nurses have proven to be leaders in the field of cancer symptom management. An understanding of potential mechanisms underlying the beneficial effects of exercise on CTRF may help to fine-tune exercise interventions to maximize symptom control and to identify new treatment strategies for fatigued patients with cancer who are unable to participate in an exercise program.

A telephone-only motivational intervention to increase physical activity in rural adults: a randomized controlled trial.

BACKGROUND: Both urban and rural adults are likely to be inactive, but rural adults have less access to exercise classes or facilities to increase physical activity. OBJECTIVES: To evaluate whether a telephone-only motivational interviewing (MI) intervention would increase daily physical activity of rural adults. METHODS: This randomized controlled trial enrolled 86 physically inactive adults living in rural communities (mean age = 58 years, range = 30-81 years) who stated that they were ready to increase physical activity during the next 6 months. Participants were assigned randomly to MI intervention (n = 43) or control (n = 43) groups. The MI group participants received a pedometer and monthly MI telephone calls over 6 months from a counselor. Control group participants received an equal number of telephone calls without MI content. Physical activity was measured by self-report using the Community Healthy Activities Model Program For Seniors Physical Activity Questionnaire for Older Adults. Data were collected by mailed surveys and analyzed using analysis of variance. RESULTS: Seventy-two participants completed the study (35 in the intervention group and 37 in the control group). The telephone-only MI intervention increased self-efficacy for exercise (p = .019) but did not increase levels of physical activity (p = .572) compared with controls. DISCUSSION: The intervention increased self-efficacy for exercise but did not increase physical activity, possibly due to seasonal effects, the control condition, or the length of the MI intervention. Even so, future studies are warranted because telephone-only MI has potential as a practical, relatively inexpensive method to provide health counseling to rural adults in a broad geographic area. This study produced an effect size on physical activity that will be useful to guide future studies.

Motivational interviewing to increase physical activity in long-term cancer survivors: a randomized controlled trial.

BACKGROUND: Physical activity can confer many benefits on cancer survivors, including relief of persistent symptoms related to cancer treatment. OBJECTIVES: To evaluate the effect of a motivational interviewing (MI) intervention on increasing physical activity (Community Healthy Activities Model Program for Seniors questionnaire) and improving aerobic fitness (6-minute walk), health (Medical Outcomes Study Short-Form 36), and fatigue (Schwartz Cancer Fatigue Scale) in cancer survivors. A secondary purpose was to evaluate whether the effect of MI on physical activities depended on self-efficacy. METHODS: Fifty-six physically inactive adult cancer survivors (mean=42 months since completion of treatment) were assigned randomly to intervention and control groups. The MI intervention consisted of one in-person counseling session followed by two MI telephone calls over 6 months. Control group participants received two telephone calls without MI content. Outcomes were measured at baseline, 3 months, and 6 months, and were analyzed using multilevel modeling. RESULTS: The results of the MI intervention explained significant group differences in regular physical activities (measured in caloric expenditure per week), controlling for time since completion of cancer treatment (p<.05). Aerobic fitness, physical and mental health, and fatigue were not different between groups. In the intervention group, individuals with high self-efficacy for exercise at baseline increased their physical activity more than those with low self-efficacy (p<.05). In the control group, increases in physical activity did not depend on self-efficacy. DISCUSSION: Use of MI may increase physical activity in long-term cancer survivors, especially in persons with high self-efficacy for exercise. Multilevel modeling analysis revealed individual changes that would not have been shown by analysis of group means. Future studies with larger samples or more intense MI interventions may show changes in aerobic fitness, physical and mental health, and fatigue.

Explaining family caregiver role strain following autologous blood and marrow transplantation.

This research project explores family caregiving processes during the first 100 days following autologous blood and marrow transplantation (ABMT). In this paper, we (1) explore patterns in caregiving, and ABMT recipient function early recovery from ABMT; (2) examine the relationships among caregiver demographics, relationship quality, preparedness, ABMT recipient function, predictability of caregiving, caregiver role strain and rewards of caregiving; and (3) examine the relative contribution of caregiver age, preparedness, relationship quality, and ABMT recipient function on caregiver role strain, and rewards of caregiving. Fifty-two family caregivers of ABMT recipients completed questionnaires about caregiving at hospital discharge, and again 2, 6, and 12 weeks following discharge. The amount of caregiving activities performed, and caregiver role strain, declined steadily from 2 weeks to 12 weeks of recovery. The caregiving situation was relatively predictable during recovery, and caregivers reported that caregiving was consistently rewarding. The caregiving activities rated as most difficult were those related to supporting recipients' emotional well-being. Strain from caregiving, although low, was explained by disruption in recipients' emotional and physical functioning, while caregiving rewards were explained by caregivers' preparedness for caregiving. Relationship quality, a significant predictor of strain in other samples, did not influence caregiving strain or rewards in this population. Caregiving processes delineated in studies of caregivers of persons with chronic illness are quite different from those described in this study. The acuity of the recipients' illness, the life threatening nature of the treatment, and the younger age of caregivers, and recipients, may underlie these differences.

The cancer chemotherapy drug etoposide (VP-16) induces proinflammatory cytokine production and sickness behavior-like symptoms in a mouse model of cancer chemotherapy-related symptoms.

Cancer chemotherapy-related symptoms such as fatigue, malaise, loss of interest in social activities, difficulty concentrating, and changes in sleep patterns can lead to treatment delays, dose reductions, or termination and have a profound effect on the physical, psychosocial, and economic aspects of quality of life. Clinicians have long suspected that these symptoms are similar to those associated with "sickness behavior," which is triggered by the production of the inflammatory cytokines IL-1beta, TNF-alpha, and IL-6 by macrophages and other cells of the innate immune system in response to immune challenge. The p38 mitogen-activated protein kinase (p38 MAPK) plays a central role in the production of these cytokines and consequently the induction of sickness behavior. Several cancer chemotherapy drugs have been shown to activate p38 MAPK, but whether these drugs can also induce the production of inflammatory cytokines to cause sickness behavior is unknown. The aim of this study was to determine whether the cancer chemotherapy drug etoposide (VP-16), which is known to activate p38 MAPK, could induce inflammatory cytokine production by murine macrophages and sickness-like behaviors when injected into mice. VP-16 activated p38 MAPK and induced IL-6 production in murine macrophages in a p38 MAPK- dependent manner. VP-16 administration rapidly increased serum levels of IL-6 in healthy mice and induced sickness-like behaviors as evidenced by a decrease in food intake, body weight, hemoglobin level, and voluntary wheel-running activity. These findings support the idea that the induction of IL-1beta, TNF-alpha, and IL-6 by cancer chemotherapy drugs underlies the fatigue and associated symptoms experienced by people undergoing cancer chemotherapy.

Cancer chemotherapy-related symptoms: evidence to suggest a role for proinflammatory cytokines.

PURPOSE/OBJECTIVES: To provide an overview of the evidence that supports a role for the proinflammatory cytokines interleukin-1beta (IL-1beta), tumor necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6) in the etiology of cancer chemotherapy-related symptoms. DATA SOURCES: Electronic nursing, psychology, and medicine databases; online meeting abstracts; and personal experimental observations. DATA SYNTHESIS: Substantial evidence implicates the proinflammatory cytokines IL-1beta, TNF-alpha, and IL-6 in the etiology of chemotherapy-related anorexia, cachexia, anemia, pain, sleep disturbance, fatigue, and depression. CONCLUSIONS: Further investigation into the role of these cytokines in the genesis of chemotherapy-related symptoms is warranted. The development of appropriate animal models likely will be key to understanding the relationship among cancer chemotherapy, proinflammatory cytokines, and symptoms. IMPLICATIONS FOR NURSING: Nurses traditionally have been leaders in symptom management. The symptoms experienced by patients undergoing chemotherapy have a profound negative impact on quality of life and patients' ability to receive prescribed treatments. An understanding of potential mechanisms underlying the physiologic and behavioral consequences of chemotherapy administration will aid nurses in the development of interventions to effectively manage chemotherapy-related symptoms.