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Davis JS, Chavez JC, Kok M, San Miguel Y, Lee HY, Henderson H, Overman MJ, Morris V, Kee B, Fogelman D, Advani SM, Johnson B, Parseghian C, Shen JP, Dasari A, Shaw KR, Vilar E, Raghav KP, Shureiqi I, Wolff RA, Meric-Bernstam F, Maru D, Menter DG, Kopetz S, Chang S. Association of Prediagnosis Obesity and Postdiagnosis Aspirin With Survival From Stage IV Colorectal Cancer. JAMA Netw Open 2022; 5:e2236357. [PMID: 36239938 PMCID: PMC9568800 DOI: 10.1001/jamanetworkopen.2022.36357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE The potential relationship between obesity and colorectal cancer (CRC) outcome is poorly understood in patients with late-stage disease. Increased body mass index may negate aspirin use for cancer prevention, but its role as a factor on the effectiveness of postdiagnosis aspirin use is unclear. OBJECTIVE To evaluate how prediagnosis obesity and postdiagnosis aspirin use may be associated with overall survival in patients with late-stage colorectal cancer. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study used self-reported data from patients with metastatic or treatment-refractory disease who consented to a clinical protocol at MD Anderson Cancer Center, a large US cancer treatment center. Patients were enrolled between 2010 and 2018 and followed up for mortality through July 2020. Analyses were conducted through March 2022. EXPOSURES Body mass index in the decade prior to initial diagnosis and regular aspirin use at survey completion. MAIN OUTCOMES AND MEASURES Overall survival was measured from stage IV diagnosis until death or last follow-up. Cox proportional hazards models were constructed to estimate associations of prediagnosis obesity and postdiagnosis aspirin use with overall survival. RESULTS Of 656 patients included in this analysis, 280 (42.7%) were women, 135 (20.6%) were diagnosed with CRC before age 45 years, 414 (63.1%) were diagnosed between ages 45 and 65 years, and 107 (16.3%) were diagnosed at 65 years or older; 105 patients (16.0%) were Black or Hispanic, and 501 (76.4%) were non-Hispanic White. Controlling for age, sex, race, stage at initial diagnosis, and weight change between prediagnosis and survey date, patients with obesity in the decade prior to CRC diagnosis had significantly higher likelihood of death (hazard ratio, 1.45; 95% CI, 1.11-1.91) compared with those with normal prediagnosis body mass index. Furthermore, only patients with normal prediagnosis body mass index experienced significant survival benefit with postdiagnosis aspirin use (hazard ratio, 0.59; 95% CI, 0.39-0.90). CONCLUSIONS AND RELEVANCE In this cross-sectional study, our findings suggest potentially differential tumor development in the long-term physiologic host environment of obesity. Confirmation and further evaluation are needed to determine whether prediagnosis body mass index may be used to estimate the benefit from postdiagnosis aspirin use.
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Affiliation(s)
- Jennifer S. Davis
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Now with Department of Cancer Biology, University of Kansas Medical Center, Kansas City
| | - Janelle C. Chavez
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
- Now with Stanford University School of Medicine, Stanford, California
| | - Melissa Kok
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
- Now with Baylor College of Medicine, Houston, Texas
| | - Yazmin San Miguel
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
- Now with Abbott Laboratories, Chicago, Illinois
| | - Hwa Young Lee
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
| | - Henry Henderson
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston
- Now with Foundation Medicine, Atlanta, Georgia
| | - Michael J. Overman
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Van Morris
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Bryan Kee
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - David Fogelman
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
- Now with Merck & Co, Philadelphia, Pennsylvania
| | - Shailesh M. Advani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
- Now with Terasaki Institute of Biomedical Innovation, Los Angeles, California
| | - Benny Johnson
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Christine Parseghian
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - John Paul Shen
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Arvind Dasari
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Kenna R. Shaw
- Department of Sheikh Khalifa Nahyan Ben Zayed Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston
| | - Eduardo Vilar
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston
| | - Kanwal P. Raghav
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Imad Shureiqi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
- Now with Department of Cancer Biology, University of Michigan Medical School, Ann Arbor
| | - Robert A. Wolff
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston
| | - Dipen Maru
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston
| | - David G. Menter
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston
| | - Shine Chang
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston
- Department of Cancer Prevention Research Training Program, The University of Texas MD Anderson Cancer Center, Houston
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Keaver L, Houlihan C, O'Callaghan N, LaVertu AE, Ding X, Zhang FF. Evidence-based nutrition guidelines for cancer survivors in Europe: a call for action. Eur J Clin Nutr 2021; 76:819-826. [PMID: 34716363 DOI: 10.1038/s41430-021-01036-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 10/06/2021] [Accepted: 10/14/2021] [Indexed: 01/12/2023]
Abstract
BACKGROUND/OBJECTIVES The aims of this study were to (1) document currently available guidelines aimed at healthcare professionals and including some information on the nutritional management of cancer survivors in Europe; (2) assess the quality of these guidelines and (3) document the nutrition recommendations promoted. METHODS Four search strategies were implemented in 2018 and updated in 2021 to locate guidelines. Papers were included if they described a European guideline or recommendation for cancer survivors that contained nutrition guidance and there were no language restrictions. Two reviewers independently assessed guideline quality using the AGREE II instrument and nutrition content was extracted and summarised. RESULTS Five guidelines (of 593 documents located through the searches) met the inclusion criteria. The ESPEN guidelines were deemed to have the highest methodological quality. Limited information on nutrition was available in these guidelines with the majority of focus being on the promotion of fruit, vegetables and wholegrains and reducing fat, red meat and alcohol. Weight management was mentioned by all five guidelines. There was no detailed information available for cancer survivors or their healthcare team and no practical strategies for the implementation of recommendations. CONCLUSIONS There is a need for nutrition guidelines specific for cancer survivors in a European setting. Current guidelines are limited and focus on broad recommendations, while lacking in practical strategies for implementation. There is also a tendency to recommend cancer prevention guidelines be used for cancer survivors rather than developing specific guidance for this group.
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Affiliation(s)
- Laura Keaver
- Department of Health and Nutritional Science, Institute of Technology Sligo, Sligo, F91 YW50, Ireland. .,Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, 02111, USA.
| | - Christine Houlihan
- Department of Health and Nutritional Science, Institute of Technology Sligo, Sligo, F91 YW50, Ireland
| | - Niamh O'Callaghan
- Department of Health and Nutritional Science, Institute of Technology Sligo, Sligo, F91 YW50, Ireland
| | - Amy E LaVertu
- Hirsh Health Sciences Library, Tufts University, Boston, MA, 02111, USA
| | - Xinge Ding
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, 02111, USA
| | - Fang Fang Zhang
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, 02111, USA
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Treasure M, Thomas A, Ganocy S, Hong A, Krishnamurthi SS, Bajor DL, Berger NA, Meropol NJ. A pilot study of a low glycemic load diet in patients with stage I-III colorectal cancer. J Gastrointest Oncol 2021; 12:910-920. [PMID: 34295544 DOI: 10.21037/jgo-20-330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/28/2021] [Indexed: 01/05/2023] Open
Abstract
Background Consumption of a diet with high glycemic indices has been associated with inferior cancer-specific outcomes in patients with early-stage colorectal cancer, but there is limited prospective evidence that alterations in dietary habits improves cancer outcomes. This study aimed to determine the feasibility and acceptability of following a low glycemic load (GL) diet in patients with stage I-III colorectal cancer. Methods Patients with stage I-III colorectal cancer, who completed definitive therapy, and consumed an average daily GL >150 participated in a 12-week tailored face-to-face dietary intervention with a target GL. This study followed a 2-stage design, with 4 planned cohorts, each with an assigned GL target and dietary intervention intensity. The primary endpoint of feasibility was determined by participant compliance, defined as an individual following the assigned GL ≥75% of the time. Compliance was determined using 24-hour telephone recalls. A cohort was deemed feasible if at least 67% of participants were compliant. Secondary endpoints included acceptability of the diet, nutritional support resources necessary to follow the diet, and evaluation of the effect of the diet on physical measures and correlative laboratories. Results Only cohort 1 was required as the primary endpoint of feasibility was met (stringent GL target, low intensity dietary support). The majority of participants experienced a decrease in body mass index (BMI) and waist circumference, 29% experiencing meaningful weight loss (≥5%). The dietitian spent an average of 6.97 hours (SD 2.18) face-to-face time and 1.58 hours (SD 0.68) by phone with each participant. Significant decreases were seen in total cholesterol, very-low-density lipoprotein (VLDL) and triglycerides (all P<0.05). All participants liked the foods and were satisfied with the diet. All participants felt the in-person meetings were helpful, and 62% did not feel a virtual meeting (e.g., Skype, etc.) could replace in-person meetings. Conclusions Patients with stage I-III colorectal cancer can follow a low GL diet with a 12-week in-person dietary intervention. Significant changes in physical and laboratory measures suggest relevant biologic effects of the dietary intervention. This study establishes feasibility, and warrants a larger scale prospective intervention trial to evaluate the impact of a low GL diet on cancer outcomes.
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Affiliation(s)
- Michelle Treasure
- Department of Medicine, Division of Hematology and Oncology, Cleveland Clinic Foundation, Case Comprehensive Cancer Center, Cleveland Clinic Learner College of Medicine, Cleveland, OH, USA
| | - Alicia Thomas
- Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Stephen Ganocy
- Department of Psychiatry, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Augustine Hong
- Department of Medicine, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Smitha S Krishnamurthi
- Department of Medicine, Division of Hematology and Oncology, Cleveland Clinic Foundation, Case Comprehensive Cancer Center, Cleveland Clinic Learner College of Medicine, Cleveland, OH, USA
| | - David L Bajor
- Department of Medicine, Division of Hematology and Oncology, University Hospitals Cleveland Medical Center, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Nathan A Berger
- Department of Medicine, Division of Hematology and Oncology, University Hospitals Cleveland Medical Center, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Neal J Meropol
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.,Flatiron Health, Inc., New York, NY, USA
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Zanjani FS, Gaeni AA, Aras D, Akalan C. The effect of strength and endurance training on SSTR2 and SSTR5 in patients with colorectal cancer. J Exerc Rehabil 2019; 15:622-627. [PMID: 31523687 PMCID: PMC6732536 DOI: 10.12965/jer.1938250.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/20/2019] [Indexed: 11/22/2022] Open
Abstract
The roots of apoptosis caused by the use of certain drugs in patients with colorectal cancer and certain drugs could be induced the change in genes SSTR2 and SSTR5. SSTRs play a role in colorectal cancer and it’s also known that exercise training has similar effects to certain drugs. Therefore, this study aims to evaluate the effects of a combined training program on hormonal and physiological changes in patients with colorectal cancer. Twenty patients with colorectal cancer were included in this study and divided into two groups as experimental (n=10) and control (n=10). The experimental group performed an exercise training program 5 days a week for 14 weeks. Blood samples were taken from the patients before and after the training program, and analyzed for somatostatin and its receptors. When the pretest effect excluded as statistical, there were no significant differences in SSRT2 (P>0.05) and SSRT5 (P>0.05) between the experimental and control groups. The hypothesis for this study was “SSTR2 and SSTR5 will improve after combined training program” however, in accordance with the results it was rejected. It seems that the determined training program for these patients need to be extended and performed for at least 3 months in a gradual incremental structure so that it could affect their health indicators significantly.
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Affiliation(s)
- Farhad Safari Zanjani
- Department of Physical Education and Sport Sciences, Faculty of Education, IA University Zanjan Branch, Zanjan, Iran
| | - Abbas Ali Gaeni
- Department of Exercise Physiology, Faculty of Sport Sciences, Tehran University, Tehran, Iran
| | - Dicle Aras
- Department of Coaching Education, Faculty of Sport Sciences, Ankara University, Ankara, Turkey
| | - Cengiz Akalan
- Department of Coaching Education, Faculty of Sport Sciences, Ankara University, Ankara, Turkey
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5
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Post-cancer diagnosis dietary inflammatory potential is associated with survival among women diagnosed with colorectal cancer in the Women's Health Initiative. Eur J Nutr 2019; 59:965-977. [PMID: 30955051 DOI: 10.1007/s00394-019-01956-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 03/24/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE Dietary factors may influence colorectal cancer (CRC) survival through effects on inflammation. We examined the association between post-CRC diagnosis inflammatory potential of diet and all-cause and cancer-specific mortality in the Women's Health Initiative. METHODS The study included 463 postmenopausal women who developed CRC during follow-up and completed a food frequency questionnaire (FFQ), on average 1.7 years after diagnosis. Women were followed from CRC diagnosis until death, censoring, or the end of follow-up in October 2014. Energy-adjusted dietary inflammatory index (E-DII)® scores were calculated from the FFQ and dietary supplement inventory. Cox proportional hazards models were fitted to estimate multivariable-adjusted HRs and 95% confidence intervals (CIs) for all-cause, total cancer, and CRC-specific mortality with the most pro-inflammatory E-DII scores (tertile 3) as referent. RESULTS After a median 11.6 years of follow-up, 162 deaths occurred, including 77 from CRC. Lowest tertile (i.e., most anti-inflammatory) E-DII scores from diet plus supplements were associated with significantly lower all-cause mortality (HRT1vsT3 = 0.49; 95% CI 0.31-0.79) compared to the most pro-inflammatory E-DII tertile. Modest associations with total cancer mortality or CRC-specific mortality were observed, though 95% CIs included 1. CONCLUSIONS Consuming a dietary pattern and supplements with more anti-inflammatory potential after CRC diagnosis may improve overall survival among postmenopausal women.
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Velázquez KT, Enos RT, Carson MS, Cranford TL, Bader JE, Chatzistamou I, Singh UP, Nagarkatti PS, Nagarkatti M, Davis JM, Carson JA, Murphy EA. Weight loss following diet-induced obesity does not alter colon tumorigenesis in the AOM mouse model. Am J Physiol Gastrointest Liver Physiol 2016; 311:G699-G712. [PMID: 27609769 PMCID: PMC5142197 DOI: 10.1152/ajpgi.00207.2016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/30/2016] [Indexed: 02/06/2023]
Abstract
Obesity presents a significant public health concern given its association with increased cancer incidence, unfavorable prognosis, and metastasis. However, there is very little literature on the effects of weight loss, following obesity, on risk for colon cancer or liver cancer. Therefore, we sought to study whether intentional weight loss through diet manipulation was capable of mitigating colon and liver cancer in mice. We fed mice with a high-fat diet (HFD) comprised of 47% carbohydrates, 40% fat, and 13% protein for 20 wk to mimic human obesity. Subsequently, azoxymethane (AOM) was used to promote colon and liver carcinogenesis. A subset of obese mice was then switched to a low-fat diet (LFD) containing 67.5% carbohydrate, 12.2% fat, and 20% protein to promote intentional weight loss. Body weight loss and excess fat reduction did not protect mice from colon cancer progression and liver dysplastic lesion in the AOM-chemical-cancer model even though these mice had improved blood glucose and leptin levels. Intentional weight loss in AOM-treated mice actually produced histological changes that resemble dysplastic alterations in the liver and presented a higher percentage of F4/80+CD206+ macrophages and activated T cells (CD4+CD69+) in the spleen and lymph nodes, respectively. In addition, the liver of AOM-treated mice exposed to a HFD during the entire period of the experiment exhibited a marked increase in proliferation and pNF-κB activation. Altogether, these data suggest that intentional weight loss following chemical-induced carcinogenesis does not affect colon tumorigenesis but may in fact negatively impact liver repair mechanisms.
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Affiliation(s)
- Kandy T. Velázquez
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Reilly T. Enos
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Meredith S. Carson
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Taryn L. Cranford
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Jackie E. Bader
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Ioulia Chatzistamou
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Udai P. Singh
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Prakash S. Nagarkatti
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - Mitzi Nagarkatti
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
| | - J. Mark Davis
- 2Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - James A. Carson
- 2Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - E. Angela Murphy
- 1Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina; and
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Kothari N, Kim R, Jorissen RN, Desai J, Tie J, Wong HL, Faragher I, Jones I, Day FL, Li S, Sakthinandeswaren A, Palmieri M, Lipton L, Schell M, Teer JK, Shibata D, Yeatman T, Sieber OM, Gibbs P, Tran B. Impact of regular aspirin use on overall and cancer-specific survival in patients with colorectal cancer harboring a PIK3CA mutation. Acta Oncol 2015; 54:487-92. [PMID: 25549537 DOI: 10.3109/0284186x.2014.990158] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Recent data have suggested that regular aspirin use improves overall and cancer-specific survival in the subset of colorectal cancer (CRC) patients harboring PIK3CA mutations. However, the number of PIK3CA-mutated CRC patients examined in these studies was modest. Our collaborative study aims to validate the association between regular aspirin use and survival in patients with PIK3CA-mutated CRC. PATIENTS AND METHODS Patients with PIK3CA-mutated CRC were identified at Moffitt Cancer Center (MCC) in the United States and Royal Melbourne Hospital (RMH) in Australia. Prospective clinicopathological data and survival data were available. At MCC, PIK3CA mutations were identified by targeted exome sequencing using the Illumina GAIIx Next Generation Sequencing platform. At RMH, Sanger sequencing was utilized. Multivariate survival analyses were conducted using Cox logistic regression. RESULTS From a cohort of 1487 CRC patients, 185 patients harbored a PIK3CA mutation. Median age of patients with PIK3CA-mutated tumors was 72 years (range: 34-92) and median follow up was 54 months. Forty-nine (26%) patients used aspirin regularly. Regular aspirin use was not associated with improved overall survival (multivariate HR 0.96, p = 0.86). There was a trend towards improved cancer-specific survival (multivariate HR 0.60, p = 0.14), but this was not significant. CONCLUSIONS Despite examining a large number of patients, we did not confirm that regular aspirin use was associated with statistically significant improvements in survival in PIK3CA-mutated CRC patients. Prospective evaluation of this relationship is warranted.
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Affiliation(s)
- Nishi Kothari
- Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center and Research Institute , Tampa , USA
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8
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Abstract
To provide therapeutic alternatives to intravenous colon chemotherapy major recent research is focusing on the development of oral chemotherapeutic agents with the intention to improve the quality of life of patients. Initially 5-fluorouracil was most commonly used for the treatment of colorectal cancer but currently oxaliplatin and irinotecan are also available. The majority of these new drugs are pyrimidines and their analogs. The rationale for using oral anticancer agents is discussed and new drugs, such as farnesyl protein transferase inhibitor S-1, rubitecan, ZD9331, MMI-166, eflornithine, sulindac, and oral camptothecin analogs, among others, are presented with the results of their preclinical and clinical developments. This article focuses on the advancement of clinical development and also discusses the relative merits and demerits of these agents. The accelerated approval of these agents by regulatory authorities is supported by survival benefit, response rate and time to progression.
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Affiliation(s)
- Raj Kumar Shukla
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki Vishwavidyalaya, (Rajiv Gandhi Technological University), The State Technical University of Madhya Pradesh, Airport Bypass Road Gandhi Nagar-462036, Bhopal, India.
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9
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Jeon JY, Meyerhardt JA. Can we change the past for colorectal cancer patients and how do we move forward? Cancer 2014; 120:1450-2. [PMID: 24591002 DOI: 10.1002/cncr.28567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 11/27/2013] [Accepted: 12/18/2013] [Indexed: 01/07/2023]
Affiliation(s)
- Justin Y Jeon
- Department of Sport and Leisure Studies, Yonsei University, Seoul, Korea
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Backman M, Wengström Y, Johansson B, Sköldengen I, Börjesson S, Tärnbro S, Berglund Å. A randomized pilot study with daily walking during adjuvant chemotherapy for patients with breast and colorectal cancer. Acta Oncol 2014; 53:510-20. [PMID: 24460069 DOI: 10.3109/0284186x.2013.873820] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Physical activity during chemotherapy has been shown in several studies to reduce fatigue, improve symptoms and impact positively on health-related quality of life (HRQoL). Challenges associated with intervention studies on physical activity during cancer treatment relate to consistent adherence. The primary objective was to study feasibility and adherence of physical activity intervention among patients with cancer during adjuvant chemotherapy treatment. The secondary objective was to investigate the effects of physical activity on health aspects, including HRQoL, symptoms and surrogate markers for cardiovascular disease. MATERIAL AND METHODS This randomized controlled trial included patients with breast cancer (BRCA) and colorectal cancer (CRC) during adjuvant chemotherapy. The intervention continued for 10 weeks and included daily walks of 10 000 steps and a weekly supervised group walk. Adherence was assessed by a pedometer and the number of participants who reported step counts every week and percentage of participants who achieved the target steps every week. RESULTS Adherence average reached 91% during the intervention period; in total 74% completed the exercise intervention. The majority of the participants achieved an average of 83% of the target of 10 000 steps per day for 10 weeks. There was a significant increase in daily physical activity (p = 0.016) in the intervention group. Significant differences were also found for some breast cancer-specific symptoms [swelling, mobility and pain (p = 0.045)]. The study showed a relatively small weight gain an average of 0.9 kg in the intervention group and 1.3 kg in the control group. CONCLUSION Physical activity in the form of walking is feasible during adjuvant chemotherapy treatment despite increasing symptoms. The physical activity increased in the intervention group during the study time and had a positive impact on breast symptoms and the weight gain was lower in comparison to previous studies.
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Affiliation(s)
- Malin Backman
- Department of Neurobiology, Care Science and Society, Division of Nursing Karolinska Institute,
Stockholm, Sweden
| | - Yvonne Wengström
- Department of Neurobiology, Care Science and Society, Division of Nursing Karolinska Institute,
Stockholm, Sweden
| | - Birgitta Johansson
- Department of Radiology, Oncology and Radiation Science, Uppsala University,
Uppsala, Sweden
| | - Ida Sköldengen
- Department of Radiology, Oncology and Radiation Science, Uppsala University,
Uppsala, Sweden
| | - Susanne Börjesson
- Department of Surgery, Central Hospital of Falun,
Falun, Sweden
- Department of Public Health and Caring Science, Uppsala University,
Uppsala, Sweden
| | - Sara Tärnbro
- Department of Radiology, Oncology and Radiation Science, Uppsala University,
Uppsala, Sweden
| | - Åke Berglund
- Department of Radiology, Oncology and Radiation Science, Uppsala University,
Uppsala, Sweden
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Deep G, Agarwal R. Targeting tumor microenvironment with silibinin: promise and potential for a translational cancer chemopreventive strategy. Curr Cancer Drug Targets 2014; 13:486-99. [PMID: 23617249 DOI: 10.2174/15680096113139990041] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 03/16/2012] [Accepted: 03/30/2012] [Indexed: 12/31/2022]
Abstract
Tumor microenvironment (TME) refers to the dynamic cellular and extra-cellular components surrounding tumor cells at each stage of the carcinogenesis. TME has now emerged as an integral and inseparable part of the carcinogenesis that plays a critical role in tumor growth, angiogenesis, epithelial to mesenchymal transition (EMT), invasion, migration and metastasis. Besides its vital role in carcinogenesis, TME is also a better drug target because of its relative genetic stability with lesser probability for the development of drug-resistance. Several drugs targeting the TME (endothelial cells, macrophages, cancer-associated fibroblasts, or extra-cellular matrix) have either been approved or are in clinical trials. Recently, non-steroidal anti-inflammatory drugs targeting inflammation were reported to also prevent several cancers. These exciting developments suggest that cancer chemopreventive strategies targeting both tumor and TME would be better and effective towards preventing, retarding or reversing the process of carcinogenesis. Here, we have reviewed the effect of a well established hepatoprotective and chemopreventive agent silibinin on cellular (endothelial, fibroblast and immune cells) and non-cellular components (cytokines, growth factors, proteinases etc.) of the TME. Silibinin targets TME constituents as well as their interaction with cancer cells, thereby inhibiting tumor growth, angiogenesis, inflammation, EMT, and metastasis. Silibinin is already in clinical trials, and based upon completed studies we suggest that its chemopreventive effectiveness should be verified through its effect on biological end points in both tumor and TME. Overall, we believe that the chemopreventive strategies targeting both tumor and TME have practical and translational utility in lowering the cancer burden.
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Affiliation(s)
- Gagan Deep
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, CO, USA
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Dennis DL, Waring JL, Payeur N, Cosby C, Daudt HML. Making lifestyle changes after colorectal cancer: insights for program development. ACTA ACUST UNITED AC 2013; 20:e493-511. [PMID: 24311950 DOI: 10.3747/co.20.1514] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Healthy lifestyle behaviours may improve outcomes for people with colorectal cancer (crc), but the intention to take action and to change those behaviours may vary with time and resource availability. We aimed to estimate the prevalence of current lifestyle behaviours in people with and without crc in our community, and to identify their desire to change and their resource preferences. METHODS A mixed-methods survey was completed by people diagnosed with crc who were pre-treatment (n = 54), undergoing treatment (n = 62), or done with treatment for less than 6 months (n = 67) or for more than 6 months (n = 178), and by people without cancer (n = 83). RESULTS Current lifestyle behaviours were similar in all groups, with the exception of vigorous physical activity levels, which were significantly lower in the pre-treatment and ongoing treatment respondents than in cancer-free respondents. Significantly more crc respondents than respondents without cancer had made lifestyle changes. Among the crc respondents, dietary change was the change most frequently made (39.3%), and increased physical activity was the change most frequently desired (39.1%). Respondents wanted to use complementary and alternative medicine (cam), reading materials, self-efficacy, and group activities to make future changes. CONCLUSIONS Resources for lifestyle change should be made available for people diagnosed with crc, and should be tailored to address physical activity, cam, and diet. Lifestyle programs offered throughout the cancer trajectory and beyond treatment completion might be well received by people with crc.
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Affiliation(s)
- D L Dennis
- Clinical Research, BC Cancer Agency-Vancouver Island Centre, Victoria, BC. ; Supportive Care Research Centre, The Alex and Jo Campbell Patient and Family Support Centre, BC Cancer Agency-Vancouver Island Centre, Victoria, BC
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Sellar CM, Bell GJ, Haennel RG, Au HJ, Chua N, Courneya KS. Feasibility and efficacy of a 12-week supervised exercise intervention for colorectal cancer survivors. Appl Physiol Nutr Metab 2013; 39:715-23. [PMID: 24869975 DOI: 10.1139/apnm-2013-0367] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Exercise training improves health-related physical fitness and patient-reported outcomes in cancer survivors, but few interventions have targeted colorectal cancer (CRC) survivors. This investigation aimed to determine the feasibility and efficacy of a 12-week supervised exercise training program for CRC survivors. Feasibility was assessed by tracking participant recruitment, loss to follow-up, assessment completion rates, participant evaluation, and adherence to the intervention. Efficacy was determined by changes in health-related physical fitness. Over a 1-year period, 72 of 351 (21%) CRC survivors screened were eligible for the study and 29 of the 72 (40%) were enrolled. Two participants were lost to follow-up (7%) and the completion rate for all study assessments was ≥93%. Mean adherence to the exercise intervention was 91% (standard deviation = ±18%), with a median of 98%. Participants rated the intervention positively (all items ≥ 6.6/7) and burden of testing low (all tests ≤ 2.4/7). Compared with baseline, CRC survivors showed improvements in peak oxygen uptake (mean change (MC) = +0.24 L·min(-1), p < 0.001), upper (MC = +7.0 kg, p < 0.001) and lower (MC = +26.5 kg, p < 0.001) body strength, waist circumference (MC = -2.1 cm, p = 0.005), sum of skinfolds (MC = -7.9 mm, p = 0.006), and trunk forward flexion (MC = +2.5 cm, p = 0.019). Exercise training was found to be feasible and improved many aspects of health-related physical fitness in CRC survivors that may be associated with improved quality of life and survival in these individuals.
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Affiliation(s)
- Christopher M Sellar
- a Faculty of Physical Education and Recreation, E459 Van Vliet Center, University of Alberta, Edmonton, AB T6G 2H9, Canada
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Diet and nutrition in cancer survivorship and palliative care. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:917647. [PMID: 24288570 PMCID: PMC3832963 DOI: 10.1155/2013/917647] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 09/07/2013] [Accepted: 09/18/2013] [Indexed: 02/07/2023]
Abstract
The primary goal of palliative cancer care is typically to relieve suffering and improve quality of life. Most approaches to diet in this setting have focused only on eating as many calories as possible to avoid cachexia. However, as the concept of palliative care has evolved to include all aspects of cancer survivorship and not just end of life care, there is an increasing need to thoughtfully consider diet and nutrition approaches that can impact not only quality of life but overall health outcomes and perhaps even positively affect cancer recurrence and progression. In this regard, there has been a recent emphasis in the literature on nutrition and cancer as an important factor in both quality of life and in the pathophysiology of cancer. Hence, the primary purpose of this paper is to review the current data on diet and nutrition as it pertains to a wide range of cancer patients in the palliative care setting.
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Elwood PC, Steward WP, Galante J. Colorectal cancer prevention: screening and the role of aspirin. COLORECTAL CANCER 2013. [DOI: 10.2217/crc.13.48] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
SUMMARY Colon cancer is the third most common cancer worldwide. Sigmoidoscopy and colonoscopy, with the removal of rectal and colon polyps, are proven strategies for the prevention of colon cancer, and testing for fecal occult blood helps to identify subjects suitable for endoscopy. Evidence that low-dose aspirin is associated with a substantial reduction in colon cancer risk and reduces the number and growth of colon polyps is accumulating from randomized trials and observational studies. Advantages and disadvantages of endoscopy and aspirin prophylaxis are discussed extensively in this review. The reduction in cancer incidence by the two approaches together is considerably enhanced as they complement each other. Expenditure could become more cost effective if the two were promoted together.
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Affiliation(s)
- Peter C Elwood
- Cochrane Institute of Primary Care & Public Health, Cardiff University School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - William P Steward
- Cancer Biomarkers & Prevention Group, Department of Cancer Studies & Molecular Medicine, University of Leicester, Leicester Royal Infirmary, Leicester, LE2 7LX, UK
| | - Julieta Galante
- Cochrane Institute of Primary Care & Public Health, Cardiff University School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
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Anderson AS, Caswell S, Wells M, Steele RJC. Obesity and lifestyle advice in colorectal cancer survivors - how well are clinicians prepared? Colorectal Dis 2013; 15:949-57. [PMID: 23480570 DOI: 10.1111/codi.12203] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 12/21/2012] [Indexed: 12/13/2022]
Abstract
AIM This study aimed to assess colorectal clinicians' knowledge and understanding about the risks and benefits of weight management, to document current practice and to identify perceived barriers to providing lifestyle advice to colorectal cancer survivors. METHOD Questionnaires were sent to 768 clinicians (doctors and nurses) working in colorectal cancer, identified from professional databases. These data were complemented by in-depth interviews exploring opportunities for and barriers to giving lifestyle advice. RESULTS A total of 323 replies were received (42% response rate) and 20 respondents completed in-depth interviews. Half (52%) reported that they were familiar with guidance for lifestyle advice for cancer survivors. Most (77%) thought reducing weight was important for improving the health of those who were overweight and 75% thought it appropriate to offer lifestyle advice to people with body mass index over 30 kg/m(2) . Half (50%) reported that weight reduction was an important service priority for normal clinical practice. Half (50%) of respondents said that they would value additional training in this area. Interview data revealed that current practice is influenced by the lack of evidence for the impact of weight management and a belief that 'weight gain is good and weight loss bad' in the cancer setting. Patient sensitivity, time available, role constraints and lack of skills in weight management were also factors. CONCLUSION There is an awareness of the importance of weight management amongst colorectal cancer clinicians and some indication of advice being provided. However, current perceptions, knowledge and skills suggest scope for further training.
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McCullough ML, Gapstur SM, Shah R, Jacobs EJ, Campbell PT. Association between red and processed meat intake and mortality among colorectal cancer survivors. J Clin Oncol 2013; 31:2773-82. [PMID: 23816965 DOI: 10.1200/jco.2013.49.1126] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
PURPOSE Red and processed meat intake is convincingly associated with colorectal cancer (CRC) incidence, but its impact on prognosis after CRC diagnosis is unknown. We examined associations of red and processed meat consumption, self-reported before and after cancer diagnosis, with all-cause and cause-specific mortality among men and women with invasive, nonmetastatic CRC. PATIENTS AND METHODS Participants in the Cancer Prevention Study II Nutrition Cohort reported information on diet and other factors at baseline in 1992-1993, 1999, and 2003. Participants with a verified CRC diagnosis after baseline and up to June 30, 2009, were observed for mortality through December 31, 2010. RESULTS Among 2,315 participants diagnosed with CRC, 966 died during follow-up (413 from CRC and 176 from cardiovascular disease [CVD]). In multivariable-adjusted Cox proportional hazards regression models, red and processed meat intake before CRC diagnosis was associated with higher risks of death as a result of all causes (top v bottom quartile, relative risk [RR], 1.29; 95% CI, 1.05 to 1.59; Ptrend = .03) and from CVD (RR, 1.63; 95% CI, 1.00 to 2.67; Ptrend = .08) but not CRC (RR, 1.09; 95% CI, 0.79 to 1.51; Ptrend = 0.54). Although red and processed meat consumption after CRC diagnosis was not associated with mortality, survivors with consistently high (median or higher) intakes before and after diagnosis had a higher risk of CRC-specific mortality (RR, 1.79; 95% CI, 1.11 to 2.89) compared with those with consistently low intakes. CONCLUSION This study suggests that greater red and processed meat intake before diagnosis is associated with higher risk of death among patients with nonmetastatic CRC.
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Affiliation(s)
- Marjorie L McCullough
- Epidemiology Research Program, American Cancer Society, Atlanta, GA 30303-1002, USA.
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Rickles AS, Iannuzzi JC, Kelly KN, Garimella V, Fleming FJ, Monson JRT. The relationship between visceral obesity and colorectal cancer. COLORECTAL CANCER 2013. [DOI: 10.2217/crc.13.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SUMMARY The prevalence of obesity continues to rise globally and physicians and healthcare systems have to prepare for rising rates of obesity-associated disease. Aside from cardiovascular disease and diabetes, recent evidence suggests a strong association between obesity and the development of cancer, including colorectal cancer. Using BMI as a marker for obesity, excess body fat is associated with an increased risk of colorectal cancer; however, this relationship appears to be stronger among males and more consistent for colon rather than rectal cancer. Epidemiologic literature evaluating the risk of obesity on colorectal cancer survival using BMI is less consistent. Recent evidence suggests that visceral fat plays a greater role in the development of disease. Current research on the effect of visceral obesity on colorectal cancer outcomes is in its infancy, but may drive a new wave of practice for this ever-growing population of colorectal cancer patients.
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Affiliation(s)
- Aaron S Rickles
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA.
| | - James C Iannuzzi
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA
| | - Kristin N Kelly
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA
| | - Veerabhadram Garimella
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA
| | - Fergal J Fleming
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA
| | - John RT Monson
- Surgical Health Outcomes & Research Enterprise, Department of Surgery, University of Rochester Medical Center, NY, USA
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Ho JWC, Lee AM, Macfarlane DJ, Fong DYT, Leung S, Cerin E, Chan WYY, Leung IPF, Lam SHS, Taylor AJ, Cheng KK. Study protocol for "Moving Bright, Eating Smart"- A phase 2 clinical trial on the acceptability and feasibility of a diet and physical activity intervention to prevent recurrence in colorectal cancer survivors. BMC Public Health 2013; 13:487. [PMID: 23688320 PMCID: PMC3716902 DOI: 10.1186/1471-2458-13-487] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 05/15/2013] [Indexed: 11/26/2022] Open
Abstract
Background Colorectal cancer is the second most common cancer and cancer-killer in Hong Kong with an alarming increasing incidence in recent years. The latest World Cancer Research Fund report concluded that foods low in fibre, and high in red and processed meat cause colorectal cancer whereas physical activity protects against colon cancer. Yet, the influence of these lifestyle factors on cancer outcome is largely unknown even though cancer survivors are eager for lifestyle modifications. Observational studies suggested that low intake of a Western-pattern diet and high physical activity level reduced colorectal cancer mortality. The Theory of Planned Behaviour and the Health Action Process Approach have guided the design of intervention models targeting a wide range of health-related behaviours. Methods/design We aim to demonstrate the feasibility of two behavioural interventions intended to improve colorectal cancer outcome and which are designed to increase physical activity level and reduce consumption of a Western-pattern diet. This three year study will be a multicentre, randomised controlled trial in a 2x2 factorial design comparing the “Moving Bright, Eating Smart” (physical activity and diet) programme against usual care. Subjects will be recruited over a 12-month period, undertake intervention for 12 months and followed up for a further 12 months. Baseline, interim and three post-intervention assessments will be conducted. Two hundred and twenty-two colorectal cancer patients who completed curative treatment without evidence of recurrence will be recruited into the study. Primary outcome measure will be whether physical activity and dietary targets are met at the end of the 12-month intervention. Secondary outcome measures include the magnitude and mechanism of behavioural change, the degree and determinants of compliance, and the additional health benefits and side effects of the intervention. Discussion The results of this study will establish the feasibility of targeting the two behaviours (diet and physical activity) and demonstrate the magnitude of behaviour change. The information will facilitate the design of a further larger phase III randomised controlled trial with colorectal cancer outcome as the study endpoint to determine whether this intervention model would reduce colorectal cancer recurrence and mortality. Trial registration ClinicalTrials.gov No: NCT01708824
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Affiliation(s)
- Judy W C Ho
- Division of Colorectal Surgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.
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Booth L, Cazanave SC, Hamed HA, Yacoub A, Ogretmen B, Chen CS, Grant S, Dent P. OSU-03012 suppresses GRP78/BiP expression that causes PERK-dependent increases in tumor cell killing. Cancer Biol Ther 2012; 13:224-36. [PMID: 22354011 DOI: 10.4161/cbt.13.4.18877] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We have further defined mechanism(s) by which the drug OSU-03012 (OSU) kills tumor cells. OSU lethality was suppressed by knock down of PERK and enhanced by knock down of ATF6 and IRE1α. OSU treatment suppressed expression of the chaperone, BiP/GRP78, and did so through reduced stability of the protein. Knock down of BiP/GRP78 further enhanced OSU lethality. Overexpression of BiP/GRP78 abolished OSU toxicity. Pre-treatment of cells with OSU enhanced radiosensitivity to a greater extent than concomitant or sequential drug treatment with radiation exposure. Expression of a mutant active p110 PI3K, or mutant active forms of the EGFR in GBM cells did not differentially suppress OSU killing. In contrast loss of PTEN function reduced OSU lethality, without altering AKT, p70 S6K or mTOR activity, or the drug's ability to radiosensitize GBM cells. Knock down of PTEN protected cells from OSU and radiation treatment whereas re-expression of PTEN facilitated drug lethality and radiosensitization. In a dose-dependent fashion OSU prolonged the survival of mice carrying GBM tumors and interacted with radiotherapy to further prolong survival. Collectively, our data show that reduced BiP/GRP78 levels play a key role in OSU-3012 toxicity in GBM cells, and that this drug has in vivo activity against an invasive primary human GBM isolate.
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Affiliation(s)
- Laurence Booth
- Department of Neurosurgery, Virginia Commonwealth University, Richmond, USA
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Goel H, Thareja S, Malla P, Kumar M, Sinha VR. In silico predicative studies for cytotoxic potential of NSAIDs using self-organizing molecular field analysis. Int J Toxicol 2012; 31:390-6. [PMID: 22689635 DOI: 10.1177/1091581812444140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Antiproliferative potential of nonsteroidal anti-inflammatory drugs (NSAIDs) has generated an immense interest among the scientific fraternity to assess its broader role in the chemoprevention of colon cancer. Due to serious adverse events associated with the chemotherapy, NSAIDs have been exploited as adjuvants to synergize the cytotoxic potential of conventional chemotherapeutic agents at low-dose regimens. The present investigation has been focused on in silico model generation for in vitro cytotoxicity activity of the clinically active NSAIDs using self-organizing molecular field analysis (SOMFA) studies. A statistically validated robust model for a diverse group of NSAIDs having flexibility in structure and cytotoxicity activity was obtained using SOMFA. The statistical measures having good cross-validated correlation coefficient r (2) (cv) (.8291), noncross-validated correlation coefficient r (2) values (.8686), and high F test value (41.8722) proved significance in the generated model. Analysis of 3-dimensional quantitative structure activity relationship (3D-QSAR) models through electrostatic and shape grids provided additional valuable information regarding shape and electrostatic potential influence on in vitro cytotoxicity profile. The analysis of SOMFA results provided a better insight about the generation of molecular architecture of novel NSAIDs yet to be synthesized, with optimum in vitro cytotoxicity activity and improved therapeutic profile.
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Affiliation(s)
- Honey Goel
- University Institute of Pharmaceutical Sciences (Centre of Advanced Study), Panjab University, Chandigarh, India
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Kampman E, Vrieling A, van Duijnhoven FJ, Winkels RM. Impact of Diet, Body Mass Index, and Physical Activity on Cancer Survival. Curr Nutr Rep 2012; 1:30-36. [PMID: 24392267 PMCID: PMC3873012 DOI: 10.1007/s13668-011-0004-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
With the increase in the number of cancer patients worldwide in the coming years, the need for knowledge on the influence of lifestyle factors on cancer survival is increasing. In this paper, the current knowledge on diet, body mass index, and physical activity in relation to cancer outcome is summarized. Also, challenges are identified to be addressed to provide evidence-based recommendations for cancer patients. Studies in patients with breast, colorectal, or prostate cancer show that the influence of dietary factors on survival remains to be determined. Adiposity and a lack of physical activity, however, appear to influence cancer outcome negatively. Subsequent studies should focus on more detailed aspects of these lifestyle factors, such as body composition and dose of exercise, and on the timing with respect to diagnosis and treatment. Research should be directed toward investigating diet and physical activity simultaneously and on how changes in health behavior can be established.
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Affiliation(s)
- Ellen Kampman
- Division of Human Nutrition, Wageningen University, Bomenweg 4, 6703 HD Wageningen, The Netherlands
- University Medical Centre St. Radboud Nijmegen, and VU University Amsterdam, Amsterdam, The Netherlands
| | - Alina Vrieling
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, Heidelberg, Germany
| | - Fränzel J. van Duijnhoven
- Division of Human Nutrition, Wageningen University, Bomenweg 4, 6703 HD Wageningen, The Netherlands
- National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Renate M. Winkels
- Division of Human Nutrition, Wageningen University, Bomenweg 4, 6703 HD Wageningen, The Netherlands
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