Article

Changes in prostate gene expression in men undergoing an intensive nutrition and lifestyle intervention.

Department of Urology, The Helen Diller Family Comprehensive Cancer Center, University of California, 2340 Sutter Street, San Francisco, CA 94115, USA.
Proceedings of the National Academy of Sciences (Impact Factor: 9.81). 06/2008; 105(24):8369-74. DOI: 10.1073/pnas.0803080105
Source: PubMed

ABSTRACT Epidemiological and prospective studies indicate that comprehensive lifestyle changes may modify the progression of prostate cancer. However, the molecular mechanisms by which improvements in diet and lifestyle might affect the prostate microenvironment are poorly understood. We conducted a pilot study to examine changes in prostate gene expression in a unique population of men with low-risk prostate cancer who declined immediate surgery, hormonal therapy, or radiation and participated in an intensive nutrition and lifestyle intervention while undergoing careful surveillance for tumor progression. Consistent with previous studies, significant improvements in weight, abdominal obesity, blood pressure, and lipid profile were observed (all P < 0.05), and surveillance of low-risk patients was safe. Gene expression profiles were obtained from 30 participants, pairing RNA samples from control prostate needle biopsy taken before intervention to RNA from the same patient's 3-month postintervention biopsy. Quantitative real-time PCR was used to validate array observations for selected transcripts. Two-class paired analysis of global gene expression using significance analysis of microarrays detected 48 up-regulated and 453 down-regulated transcripts after the intervention. Pathway analysis identified significant modulation of biological processes that have critical roles in tumorigenesis, including protein metabolism and modification, intracellular protein traffic, and protein phosphorylation (all P < 0.05). Intensive nutrition and lifestyle changes may modulate gene expression in the prostate. Understanding the prostate molecular response to comprehensive lifestyle changes may strengthen efforts to develop effective prevention and treatment. Larger clinical trials are warranted to confirm the results of this pilot study.

Full-text

Available from: Vivian K Weinberg, Jun 14, 2015
0 Followers
 · 
127 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: Integrative oncology lends itself to the comprehensive practice of gynecologic oncology with multiple tools and interventions that can impact on QoL and survival. However, there remains a paucity of well-designed, well-powered randomized control trials on various CAM modalities for gynecologic cancer patients. The reasons for the lack of level 1 evidence include the nascent state of integrative medicine as a science, the limitations on CAM funding, the relative lack of integration of CAM practitioners into the oncology community, and absence of strict regulation of herbs and supplements by the US FDA. The use of CAM as adjunctive therapies will likely continue given the patient-driven trends to date, and given the evidence for at least safety and potentially efficacy, our patients deserve our willingness to use all possible approaches to improving their outcomes. Continued evolution of our ability to specifically measure and describe QoL will further our ability to hone in on domains most important to patients and their survival and allow practitioners to make patient-specific recommendations. Multimodal programs that include physical activity, stress management, and diet have the potential to address demonstrated deficits in PWB and FWB in ovarian cancer patients which suggests a model of collaborative gynecologic oncology care). Integrative oncology represents a holistic approach to patient care whose goal is maximization of patient quantity and quality of life. Patients can achieve this optimal outcome through the synergy of conventional care, integrative modalities, lifestyle modifications, and supportive care. Refer to Table 4 for a listing of integrated medicine Internet resources.
    Obstetrics and Gynecology Clinics of North America 06/2012; 39(2):285-312. DOI:10.1016/j.ogc.2012.03.001 · 1.40 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Purpose The aim of this study was to investigate the effects of a mindfulness-based day care clinic group program for cancer survivors on health-related quality of life and mental health; and to investigate which psychological variables are associated with changes in health variables. Methods One hundred seventeen cancer survivors (91.0 % female; mean age 53.9 ± 10.7 years; 65.0 % breast cancer; mean time since diagnosis 27.2 ± 46.5 months) participated in an 11-week mindfulness-based day care clinic group program, 6 h per week. The intervention incorporated mindfulness-based meditation, yoga, cognitive-behavioral techniques, and lifestyle modification. Outcome measures including health-related quality of life (EORTC QLQ-C30), depression and anxiety (HADS); and psychological variables including life satisfaction (BMLSS), mindfulness (FMI), adaptive coping styles (AKU), spiritual/religious attitudes in dealing with illness (SpREUK), and interpretation of illness (IIQ) were assessed before, after, and 3 months after the intervention. Results Using mixed linear models, significant improvements in global health status, physical functioning, role functioning, emotional functioning, cognitive functioning, and social functioning were found. Cancer-related symptoms, including fatigue, pain, insomnia, constipation, anxiety, and depression, also improved significantly. Mindfulness, life satisfaction, health satisfaction, all coping styles, all spiritual/religious attitudes, and interpretation of illness as something of value increased; interpretation of illness as punishment decreased significantly (all p R 2 = 7.3-43.6 %). Conclusion Supportive mindfulness-based interventions can be considered as an effective means to improve cancer survivors’ physical and mental health. Functional improvements are associated with improved satisfaction and coping styles.
    Supportive Care in Cancer 02/2015; DOI:10.1007/s00520-015-2660-6 · 2.50 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A sedentary lifestyle is an urgent problem in developed societies and its consequences are one of the main current problems in public health. Depression is a common reason to attend primary care in Western countries. In many cases of low and mild depression, exercise is recommended as a complement to the main therapy: Psychotherapy and/or pharmacotherapy. Nevertheless, general practitioners do not always recommend exercise to depressive patients and it is unknown why they do not. The main aim of our study was to clarify how the degree of prescribing exercise relies on a general practitioner's opinion and experience in depression treatment. A cross-sectional design was undertaken in 13 public health centers. The Depression Attitude Questionnaire (DAQ) was used to evaluate general practitioners' attitude towards depression; other variables related to the importance accorded to physical exercise; and other lifestyle aspects of physical and mental health. Our results show that general practitioners' attitude towards depression influence their willingness to recommend exercise. Moreover, less experienced general practitioners (in years) tend to appreciate the importance of exercise in health, not only in depression. A positive relationship was found between importance of exercise and importance accorded to other factors linked to lifestyle, especially diet. Although recommendation of exercise in depression is similar to other medical conditions, its prescription may be improved. Hence, it is important to point out the need for education programs for general practitioners, in order to improve their capacity to deal with their task.
    Revista de Psicologia del Deporte 01/2015; 24(1):61-69. · 0.90 Impact Factor