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Mei J, Qian M, Hou Y, Liang M, Chen Y, Wang C, Zhang J. Association of saturated fatty acids with cancer risk: a systematic review and meta-analysis. Lipids Health Dis 2024; 23:32. [PMID: 38291432 PMCID: PMC10826095 DOI: 10.1186/s12944-024-02025-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/20/2024] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE Extensive research has explored the link between saturated fatty acids (SFAs) and cardiovascular diseases, alongside other biological dysfunctions. Yet, their association with cancer risk remains a topic of debate among scholars. The present study aimed to elucidate this association through a robust meta-analysis. METHODS PubMed, Embase, Cochrane Library, and Web of Science databases were searched systematically to identify relevant studies published until December 2023. The Newcastle-Ottawa Scale was used as the primary metric for evaluating the quality of the included studies. Further, fixed- or random-effects models were adopted to determine the ORs and the associated confidence intervals using the Stata15.1 software. The subsequent subgroup analysis revealed the source of detection and the cancer types, accompanied by sensitivity analyses and publication bias evaluations. RESULTS The meta-analysis incorporated 55 studies, comprising 38 case-control studies and 17 cohort studies. It revealed a significant positive correlation between elevated levels of total SFAs and the cancer risk (OR of 1.294; 95% CI: 1.182-1.416; P-value less than 0.001). Moreover, elevated levels of C14:0, C16:0, and C18:0 were implicated in the augmentation of the risk of cancer. However, no statistically significant correlation of the risk of cancer was observed with the elevated levels of C4:0, C6:0, C8:0, C10:0, C12:0, C15:0, C17:0, C20:0, C22:0, and C24:0. Subgroup analysis showed a significant relationship between excessive dietary SFA intake, elevated blood SFA levels, and heightened cancer risk. Increased total SFA levels correlated with higher risks of breast, prostate, and colorectal cancers, but not with lung, pancreatic, ovarian, or stomach cancers. CONCLUSION High total SFA levels were correlated with an increased cancer risk, particularly affecting breast, prostate, and colorectal cancers. Higher levels of specific SFA subtypes (C14:0, C16:0, and C18:0) are also linked to an increased cancer risk. The findings of the present study would assist in providing dietary recommendations for cancer prevention, thereby contributing to the development of potential strategies for clinical trials in which diet-related interventions would be used in combination with immunotherapy to alter the levels of SFAs in patients and thereby improve the outcomes in cancer patients. Nonetheless, further high-quality studies are warranted to confirm these associations.
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Affiliation(s)
- Jin Mei
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Meiyu Qian
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Yanting Hou
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Maodi Liang
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Yao Chen
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Cuizhe Wang
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China
| | - Jun Zhang
- Medical College of Shihezi University, Bei-Er-Lu, Shihezi, Xinjiang, 832000, China.
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2
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Dianatinasab M, Wesselius A, Salehi‐Abargouei A, Yu EYW, Fararouei M, Brinkman M, van den Brandt P, White E, Weiderpass E, Le Calvez‐Kelm F, Gunter MJ, Huybrechts I, Zeegers MP. Dietary fats and their sources in association with the risk of bladder cancer: A pooled analysis of 11 prospective cohort studies. Int J Cancer 2022; 151:44-55. [PMID: 35182086 PMCID: PMC9303525 DOI: 10.1002/ijc.33970] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 01/17/2022] [Accepted: 01/24/2022] [Indexed: 12/01/2022]
Abstract
The effects of fat intake from different dietary sources on bladder cancer (BC) risk remains unidentified. Therefore, the present study aimed to investigate the association between fat intakes and BC risk by merging world data on this topic. Data from 11 cohort studies in the BLadder cancer Epidemiology and Nutritional Determinants (BLEND) study, provided sufficient information on fat intake for a total of 2731 BC cases and 544 452 noncases, which yielded 5 400 168 person-years of follow-up. Hazard ratios (HRs), with corresponding 95% confidence intervals (CIs), were estimated using Cox-regression models stratified on cohort. Analyses were adjusted for total energy intake in kilocalories, gender, smoking status (model-1) and additionally for sugar and sugar products, beers, wine, dressing and plant-based and fruits intakes (model-2). Among women, an inverse association was observed between mono-unsaturated fatty acids (MUFAs) and BC risk (HR comparing the highest with the lowest tertile: 0.73, 95% CI: 0.58-0.93, P-trend = .01). Overall, this preventative effect of MUFAs on BC risk was only observed for the nonmuscle invasive bladder cancer (NMIBC) subtype (HR: 0.69, 95% CI: 0.53-0.91, P-trend = .004). Among men, a higher intake of total cholesterol was associated with an increased BC risk (HR: 1.37, 95% CI: 1.16-1.61, P-trend = .01). No other significant associations were observed. This large prospective study adds new insights into the role of fat and oils in BC carcinogenesis, showing an inverse association between consumption of MUFAs and the development of BC among women and a direct association between higher intakes of dietary cholesterol and BC risk among men.
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Affiliation(s)
- Mostafa Dianatinasab
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Anke Wesselius
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Amin Salehi‐Abargouei
- Nutrition and Food Security Research Center, Department of Nutrition, School of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Evan Y. W. Yu
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Mohammad Fararouei
- Department of EpidemiologyShiraz University of Medical SciencesShirazIran
| | - Maree Brinkman
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- Department of Clinical Studies and Nutritional EpidemiologyNutrition Biomed Research InstituteMelbourneAustralia
- Cancer Epidemiology DivisionCancer Council VictoriaMelbourneVictoriaAustralia
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary CareMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Emily White
- Fred Hutchinson Cancer Research CenterSeattleWashingtonUSA
| | | | | | - Marc J. Gunter
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Inge Huybrechts
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Maurice P. Zeegers
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- CAPHRI School for Public Health and Primary CareMaastricht UniversityMaastrichtThe Netherlands
- School of Cancer SciencesUniversity of BirminghamBirminghamUK
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Can Diet Prevent Urological Cancers? An Update on Carotenoids as Chemopreventive Agents. Nutrients 2022; 14:nu14071367. [PMID: 35405980 PMCID: PMC9002657 DOI: 10.3390/nu14071367] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 02/04/2023] Open
Abstract
Urological cancers, namely prostate, bladder, kidney, testicular, and penile cancers, are common conditions that constitute almost one-quarter of all malignant diseases in men. Urological cancers tend to affect older individuals, and their development is influenced by modifiable metabolic, behavioral, and environmental risk factors. Phytochemicals may have cancer-fighting properties and protect against cancer development, slow its spread, and reduce the risk of cancer deaths in humans. This paper aims to review the current literature in regard to the effects of carotenoids in reducing urological cancer risk.
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4
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Zhao X, Wang Y, Liang C. Cigarette smoking and risk of bladder cancer: a dose-response meta-analysis. Int Urol Nephrol 2022; 54:1169-1185. [PMID: 35332429 DOI: 10.1007/s11255-022-03173-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/08/2022] [Indexed: 01/15/2023]
Abstract
INTRODUCTION The disease burden of bladder cancer is increasing worldwide; therefore, to deal with this situation, many studies on bladder cancer have been carried out extensively. Among these studies, the risk factors studies may provide a possible way to reduce the incidence of bladder cancer. Meta-analyses and original researches have confirmed that smoking is a risk factor of bladder cancer. However, the specific dose-response relationship between smoking and bladder cancer risk was still unclear. This meta-analysis addresses this research gap by summarizing the accumulated evidences, quantitatively. METHODS Relevant studies were obtained by searching PubMed, Embase and Web of Science database since inception until August 10, 2021, without restrictions. To obtain more comprehensive data, reference lists of identified articles were also browsed. Studies that reported risk estimates (relative risks (RR) or odds ratio (OR)) with 95% confidence intervals (CIs) focusing on the association between cigarette smoking and risk of bladder cancer were included in a dose-response meta-analysis. RESULTS A non-linear dose-response relationship was confirmed between cigarette smoking and risk of bladder cancer on the basis of 8 cohorts and 44 case-control studies. The summary relative risk of developing bladder cancer for 1 more cigarettes/day (7 cohorts and 24 case-control studies) was 1.039 (95% CI 1.038-1.040, I2 = 0%), for 1 more pack-year (3 cohorts and 21 case-control studies) was 1.017(95% CI 1.016-1.019, I2 = 0%) and for 1 more year of exposure (16 case-control studies) was 1.021 (95% CI 1.020-1.023, I2 = 0%). CONCLUSION A positive non-linear dose-response relationship is confirmed between all smoking intensity, pack-years of smoking, smoking duration(years) and the risk of bladder cancer, but the plateau only occurred when smoking intensity reached 20 cigarettes/day. Further studies should report more detailed results, including those for subtypes of gender, age, region and be stratified by other risk factors to rule out residual confounding.
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Affiliation(s)
- Xiaohu Zhao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yuanli Wang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
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Zhu H, Mo Q, Shen H, Wang S, Liu B, Xu X. Carbohydrates, Glycemic Index, and Glycemic Load in Relation to Bladder Cancer Risk. Front Oncol 2020; 10:530382. [PMID: 33072566 PMCID: PMC7538710 DOI: 10.3389/fonc.2020.530382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 08/17/2020] [Indexed: 12/30/2022] Open
Abstract
Objective: Epidemiologic studies investigating the association between dietary carbohydrates as well as glycemic index and glycemic load (markers of carbohydrate quality) and bladder cancer risk have yielded inconsistent results. The aim of the present meta-analysis is to summarize the evidence on this association. Materials and Methods: A comprehensive literature search of articles published by December 2019 was performed in PubMed, Scopus, and Web of Science databases. A random-effects model was used to calculate the pooled odds ratios (ORs) and their corresponding 95% confidence intervals (CIs). Results: Twelve observational studies were included in the final analysis. There was no evidence of an association between consumption of carbohydrates and bladder cancer risk (pooled OR, 1.04; 95% CI, 0.92-1.17). No statistically significant association between glycemic load and bladder cancer was likewise found (pooled OR, 1.10; 95% CI, 0.85-1.42). However, there was a significant positive association between glycemic index and bladder cancer risk (pooled OR, 1.25; 95% CI, 1.11-1.41). In the dose-response analysis, the pooled OR (95% CI) per 10 units of glycemic index per day was 1.02 (95% CI, 1.01-1.04). Conclusion: In this meta-analysis, glycemic index showed a positive linear association with bladder cancer risk.
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Affiliation(s)
- Hejia Zhu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qiwang Mo
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Urology, Shenzhou People's Hospital, Shenzhou, China
| | - Haixiang Shen
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Song Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ben Liu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xin Xu
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Yu EY, Wesselius A, Sinhart C, Wolk A, Stern MC, Jiang X, Tang L, Marshall J, Kellen E, van den Brandt P, Lu CM, Pohlabeln H, Steineck G, Allam MF, Karagas MR, La Vecchia C, Porru S, Carta A, Golka K, Johnson KC, Benhamou S, Zhang ZF, Bosetti C, Taylor JA, Weiderpass E, Grant EJ, White E, Polesel J, Zeegers MP. A data mining approach to investigate food groups related to incidence of bladder cancer in the BLadder cancer Epidemiology and Nutritional Determinants International Study. Br J Nutr 2020; 124:611-619. [PMID: 32321598 PMCID: PMC9429981 DOI: 10.1017/s0007114520001439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
At present, analysis of diet and bladder cancer (BC) is mostly based on the intake of individual foods. The examination of food combinations provides a scope to deal with the complexity and unpredictability of the diet and aims to overcome the limitations of the study of nutrients and foods in isolation. This article aims to demonstrate the usability of supervised data mining methods to extract the food groups related to BC. In order to derive key food groups associated with BC risk, we applied the data mining technique C5.0 with 10-fold cross-validation in the BLadder cancer Epidemiology and Nutritional Determinants study, including data from eighteen case-control and one nested case-cohort study, compromising 8320 BC cases out of 31 551 participants. Dietary data, on the eleven main food groups of the Eurocode 2 Core classification codebook, and relevant non-diet data (i.e. sex, age and smoking status) were available. Primarily, five key food groups were extracted; in order of importance, beverages (non-milk); grains and grain products; vegetables and vegetable products; fats, oils and their products; meats and meat products were associated with BC risk. Since these food groups are corresponded with previously proposed BC-related dietary factors, data mining seems to be a promising technique in the field of nutritional epidemiology and deserves further examination.
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Affiliation(s)
- Evan Y.W. Yu
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Anke Wesselius
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Christoph Sinhart
- DKE Scientific staff, Data Science & Knowledge Engineering, Faculty of Science and Engineering
| | - Alicja Wolk
- Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Mariana Carla Stern
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Xuejuan Jiang
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Li Tang
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - James Marshall
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Eliane Kellen
- Leuven University Centre for Cancer Prevention (LUCK), Leuven, Belgium
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary Care, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Chih-Ming Lu
- Department of Urology, Buddhist Dalin Tzu Chi General Hospital, Dalin Township 62247, Chiayi County, Taiwan
| | - Hermann Pohlabeln
- Leibniz Institute for Prevention Research and Epidemiology-BIPS, Bremen, Germany
| | - Gunnar Steineck
- Department of Oncology and Pathology, Division of Clinical Cancer Epidemiology, Karolinska Hospital, Stockholm, Sweden
| | - Mohamed Farouk Allam
- Department of Preventive Medicine and Public Health, Faculty of Medicine, University of Cordoba, Cordoba, Spain
| | - Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Carlo La Vecchia
- Department of Clinical Medicine and Community Health, University of Milan, Milan, Italy
| | - Stefano Porru
- Department of Diagnostics and Public Health, Section of Occupational Health, University of Verona, Italy
- University Research Center “Integrated Models for Prevention and Protection in Environmental and Occupational Health” MISTRAL, University of Verona, Milano Bicocca and Brescia, Italy
| | - Angela Carta
- University Research Center “Integrated Models for Prevention and Protection in Environmental and Occupational Health” MISTRAL, University of Verona, Milano Bicocca and Brescia, Italy
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Italy
| | - Klaus Golka
- Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund, Dortmund, Germany
| | - Kenneth C. Johnson
- Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Simone Benhamou
- INSERM U946, Variabilite Genetique et Maladies Humaines, Fondation Jean Dausset/CEPH, Paris, France
| | - Zuo-Feng Zhang
- Departments of Epidemiology, UCLA Center for Environmental Genomics, Fielding School of Public Health, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Cristina Bosetti
- Department of Oncology, Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, Milan, Italy
| | - Jack A. Taylor
- Epidemiology Branch, and Epigenetic and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - Elisabete Weiderpass
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Eric J. Grant
- Department of Epidemiology Radiation Effects Research Foundation, Hiroshima, Japan
| | - Emily White
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Jerry Polesel
- Unit of Cancer Epidemiology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Italy
| | - Maurice P.A. Zeegers
- CAPHRI School for Public Health and Primary Care, University of Maastricht, Maastricht, The Netherlands
- School of Cancer Sciences, University of Birmingham, Birmingham, UK
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Wu S, Liu Y, Michalek JE, Mesa RA, Parma DL, Rodriguez R, Mansour AM, Svatek R, Tucker TC, Ramirez AG. Carotenoid Intake and Circulating Carotenoids Are Inversely Associated with the Risk of Bladder Cancer: A Dose-Response Meta-analysis. Adv Nutr 2020; 11:630-643. [PMID: 31800007 PMCID: PMC7231589 DOI: 10.1093/advances/nmz120] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/19/2019] [Accepted: 10/11/2019] [Indexed: 11/13/2022] Open
Abstract
Some evidence indicates that carotenoids may reduce the risk of bladder cancer (BC), but the association is unclear. We conducted a systematic review and meta-analysis of case-control and cohort studies investigating the relation between carotenoid intake or circulating carotenoid concentrations and BC risk in men and women. All relevant epidemiologic studies were identified by a search of PubMed and Scopus databases, and the Cochrane Library from inception to April 2019 with no restrictions. A random-effects model was used to calculate pooled RRs and their 95% CIs across studies for high compared with low categories of intake or circulating concentrations. We also performed a dose-response meta-analysis using the Greenland and Longnecker method and random-effects models. A total of 22 studies involving 516,740 adults were included in the meta-analysis. The pooled RRs of BC for the highest compared with the lowest category of carotenoid intake and circulating carotenoid concentrations were 0.88 (95% CI: 0.76, 1.03) and 0.36 (95% CI: 0.12, 1.07), respectively. The pooled RR of BC for the highest compared with lowest circulating lutein and zeaxanthin concentrations was 0.53 (95% CI: 0.33, 0.84). Dose-response analysis showed that BC risk decreased by 42% for every 1 mg increase in daily dietary β-cryptoxanthin intake (RR: 0.58; 95% CI: 0.36, 0.94); by 76% for every 1 μmol/L increase in circulating concentration of α-carotene (RR: 0.24; 95% CI: 0.08, 0.67); by 27% for every 1 μmol/L increase in circulating concentration of β-carotene (RR: 0.73; 95% CI: 0.57, 0.94); and by 56% for every 1 μmol/L increase in circulating concentrations of lutein and zeaxanthin (RR: 0.44; 95% CI: 0.28, 0.67). Dietary β-cryptoxanthin intake and circulating concentrations of α-carotene, β-carotene, and lutein and zeaxanthin were inversely associated with BC risk. The protocol was registered at PROSPERO as CRD42019133240.
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Affiliation(s)
- Shenghui Wu
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX, USA,Address correspondence to SW (E-mail: )
| | - Yanning Liu
- John B. Alexander High School, Laredo, TX, USA
| | - Joel E Michalek
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Ruben A Mesa
- Mays Cancer Center at University of Texas Health San Antonio MD Anderson, San Antonio, TX, USA
| | - Dorothy Long Parma
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX, USA,Institute for Health Promotion Research, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Ronald Rodriguez
- Department of Urology, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Ahmed M Mansour
- Department of Urology, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Robert Svatek
- Department of Urology, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Thomas C Tucker
- Markey Cancer Center, Department of Epidemiology, College of Public Health, University of Kentucky, Lexington, KY, USA
| | - Amelie G Ramirez
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX, USA,Institute for Health Promotion Research, University of Texas Health San Antonio, San Antonio, TX, USA
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8
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Wu J, Yu Y, Huang L, Li Z, Guo P, Xu YW. Dairy Product Consumption and Bladder Cancer Risk: A Meta-Analysis. Nutr Cancer 2019; 72:377-385. [PMID: 31295044 DOI: 10.1080/01635581.2019.1637909] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
To explore the potential relationship between dairy product consumption and bladder cancer risk, we retrieved eligible studies published up to March 15, 2018, via online database search and manual review of the selected articles. Summary relative risk (RR) estimates were calculated using random-effects models based on high to low intake values. Inter-study heterogeneity was explored using stratified analyses of study design, geographic region, or whether studies adjusted for the confounders age, sex, body mass index, smoking, and education level. We extracted data from 16 studies on milk (5,193 subjects) and 10 studies on dairy products (20,434 subjects). The total study population included 220,952 individuals. Dairy product intake and bladder cancer risk were significantly associated, and milk intake and bladder cancer risk more so. Stratified analysis revealed that the trend was more pronounced in case-control studies, and in studies with impact factor <3 and in Asia. The relationship was confirmed after adjusting for sex and Newcastle-Ottawa Scale score of 7 and 8. Our study shows an inverse association between milk consumption and bladder cancer risk.
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Affiliation(s)
- Jianhua Wu
- Department of Nephrology, Hui Ya Hospital of the First Affiliated Hospital, Sun Yat-Sen University, HuiZhou, China
| | - Yi Yu
- Department of Critical Care Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liqi Huang
- Department of Nephrology, Hui Ya Hospital of the First Affiliated Hospital, Sun Yat-Sen University, HuiZhou, China
| | - Zirui Li
- Department of Nephrology, Hui Ya Hospital of the First Affiliated Hospital, Sun Yat-Sen University, HuiZhou, China
| | - Penghui Guo
- Department of Nephrology, Hui Ya Hospital of the First Affiliated Hospital, Sun Yat-Sen University, HuiZhou, China
| | - Yuan Wen Xu
- Department of Nephrology, Hui Ya Hospital of the First Affiliated Hospital, Sun Yat-Sen University, HuiZhou, China
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9
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Bermejo LM, López-Plaza B, Santurino C, Cavero-Redondo I, Gómez-Candela C. Milk and Dairy Product Consumption and Bladder Cancer Risk: A Systematic Review and Meta-Analysis of Observational Studies. Adv Nutr 2019; 10:S224-S238. [PMID: 31089737 PMCID: PMC6518155 DOI: 10.1093/advances/nmy119] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/04/2018] [Indexed: 01/01/2023] Open
Abstract
Some studies have reported that milk and dairy product consumption reduces bladder cancer incidence, whereas others have reported null or opposite findings. This meta-analysis of 26 cohort and case-control studies has been conducted to pool the risk of the association between milk and dairy products and bladder cancer. A systematic search in MEDLINE, EMBASE, and the Web of Science (from inception to 30 April 2018) was conducted. Random-effects models were used to compute pooled estimates of RR for high or medium compared with low consumption of milk and dairy. Sensitivity analyses were conducted. Subgroup analyses were performed based on type of dairy, gender, geographic location, and type of study design. Random-effects meta-regression was used to evaluate other confounding factors. Overall, medium compared with low consumption was associated with lower pooled risk of bladder cancer for total dairy products (RR = 0.90; 95% CI: 0.81, 0.98), milk (RR = 0.90; 95% CI: 0.82, 0.98), and fermented dairy products (RR = 0.87; 95% CI: 0.79, 0.96). The inverse association for milk consumption was stronger in Asians (RR = 0.79; 95% CI: 0.59, 0.98) and in cohort design studies (RR = 0.85; 95% CI: 0.71, 0.99). Moreover, high compared with low consumption was significantly associated with a lower pooled risk for milk (RR = 0.89; 95% CI: 0.81, 0.98) and fermented dairy products (RR = 0.78; 95% CI: 0.61, 0.94). However, high compared with low consumption of whole milk was significantly associated with a higher risk (RR = 1.21; 95% CI: 1.04, 1.38). The statistical heterogeneity was considerable. In conclusion, the present meta-analysis suggests a decreased risk of bladder cancer associated with medium consumption of total dairy products and with medium and high consumption of milk and fermented dairy products. An increased risk of bladder cancer was observed with high consumption of whole milk. Interpretations of the results should be made with caution. This review was registered at www.crd.york.ac.uk/prospero as CRD42018097020.
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Affiliation(s)
- Laura M Bermejo
- Nutrition and Functional Food Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Bricia López-Plaza
- Nutrition and Functional Food Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Madrid, Spain,Address correspondence to BL-P (e-mail: )
| | - Cristina Santurino
- Nutrition and Functional Food Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Iván Cavero-Redondo
- Health and Social Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain
| | - Carmen Gómez-Candela
- Nutrition and Functional Food Research Group, Hospital La Paz Institute for Health Research (IdiPAZ), Madrid, Spain,La Paz University Hospital, Madrid, Spain,Medicine Department, Universidad Autónoma de Madrid, Madrid, Spain
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10
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Ben Fradj MK, Ouanes Y, Hadj-Taieb S, Sallemi A, Kallel A, Jemaa R, Kaabachi N, Nouira Y, Feki M. Decreased Oleic Acid and Marine n - 3 Polyunsaturated Fatty Acids in Tunisian Patients with Urothelial Bladder Cancer. Nutr Cancer 2018; 70:1043-1050. [PMID: 30183426 DOI: 10.1080/01635581.2018.1497668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Fatty acids (FAs) are thought to impact carcinogenesis by affecting cell signaling. A case-control study including 250 patients with urothelial bladder cancer (UBC) and 250 controls was conducted. Plasma FAs composition was assessed using capillary gas chromatography. Associations of individual and classes of FAs with UBC were controlled for the main risk factors for UBC. Plasma FAs profile was different in patients compared to controls. Higher levels (third tertile vs. first tertile) in palmitic acid (PA) [multi-adjusted OR (95% CI), 1.83 (1.14-2.92)], and n - 6:n - 3 FA ratio [4.13 (2.38-7.16)] were associated with increased risk for UBC [multi-adjusted OR (95% CI), 1.83 (1.14-2.92)]. In contrast, higher levels (third tertile vs. first tertile) in oleic [0.54 (0.34-0.86)], dihomo-γ-linolenic (DGLA) [0.47 (0.29-0.74)], eicosapentaenoic (EPA) [0.32 (0.19-0.52)], and docosahexaenoic (DHA) acids [0.33 (0.20-0.53)] were associated with lower risk for UBC. Although the study design does not allow proving causality, the findings suggest a possible protective role of oleic acid and marine n - 3 polyunsaturated FAs (PUFAs) against bladder carcinogenesis.
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Affiliation(s)
- Mohamed Kacem Ben Fradj
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
| | - Yassine Ouanes
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,c Department of Urology , Rabta University Hospital , Tunis , Tunisia
| | - Sameh Hadj-Taieb
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
| | - Ahmed Sallemi
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,c Department of Urology , Rabta University Hospital , Tunis , Tunisia
| | - Amani Kallel
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
| | - Riadh Jemaa
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
| | - Naziha Kaabachi
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
| | - Yassine Nouira
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,c Department of Urology , Rabta University Hospital , Tunis , Tunisia
| | - Moncef Feki
- a Faculty of Medicine of Tunis , University of Tunis El Manar , Tunis , Tunisia.,b Laboratory of Biochemistry , Rabta University Hospital , Tunis , Tunisia
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11
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Goossens ME, Isa F, Brinkman M, Mak D, Reulen R, Wesselius A, Benhamou S, Bosetti C, Bueno-de-Mesquita B, Carta A, Allam MF, Golka K, Grant EJ, Jiang X, Johnson KC, Karagas MR, Kellen E, La Vecchia C, Lu CM, Marshall J, Moysich K, Pohlabeln H, Porru S, Steineck G, Stern MC, Tang L, Taylor JA, van den Brandt P, Villeneuve PJ, Wakai K, Weiderpass E, White E, Wolk A, Zhang ZF, Buntinx F, Zeegers MP. International pooled study on diet and bladder cancer: the bladder cancer, epidemiology and nutritional determinants (BLEND) study: design and baseline characteristics. ACTA ACUST UNITED AC 2016; 74:30. [PMID: 27386115 PMCID: PMC4933992 DOI: 10.1186/s13690-016-0140-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/18/2016] [Indexed: 01/10/2023]
Abstract
Background In 2012, more than 400,000 urinary bladder cancer cases occurred worldwide, making it the 7th most common type of cancer. Although many previous studies focused on the relationship between diet and bladder cancer, the evidence related to specific food items or nutrients that could be involved in the development of bladder cancer remains inconclusive. Dietary components can either be, or be activated into, potential carcinogens through metabolism, or act to prevent carcinogen damage. Methods/design The BLadder cancer, Epidemiology and Nutritional Determinants (BLEND) study was set up with the purpose of collecting individual patient data from observational studies on diet and bladder cancer. In total, data from 11,261 bladder cancer cases and 675,532 non-cases from 18 case–control and 6 cohort studies from all over the world were included with the aim to investigate the association between individual food items, nutrients and dietary patterns and risk of developing bladder cancer. Discussion The substantial number of cases included in this study will enable us to provide evidence with large statistical power, for dietary recommendations on the prevention of bladder cancer.
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Affiliation(s)
- Maria E Goossens
- Department of General Practice, Katholieke Universiteit Leuven, ACHG-KU Leuven, Kapucijnenvoer 33, Blok J, bus 7001, 3000 Leuven, Belgium
| | - Fatima Isa
- Department of Public Health, Epidemiology and Biostatistics, University of Birmingham, Birmingham, UK
| | | | - David Mak
- Department of Public Health, Epidemiology and Biostatistics, University of Birmingham, Birmingham, UK
| | - Raoul Reulen
- Department of Public Health, Epidemiology and Biostatistics, University of Birmingham, Birmingham, UK
| | - Anke Wesselius
- NUTRIM School for Nutrition and Translational Research in Metabolism, University of Maastricht, Maastricht, The Netherlands
| | - Simone Benhamou
- INSERM U946, Variabilite Genetique et Maladies Humaines, Fondation Jean Dausset / CEPH, Paris, France
| | - Cristina Bosetti
- Laboratory of General Epidemiology, Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy
| | - Bas Bueno-de-Mesquita
- Determinants of Chronic Diseases (DCD), National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands ; Gastroenterology and Hepatology, University Medical Centre, Utrecht, The Netherlands ; Epidemiology and Biostatistics, The School of Public Health, Imperial College London, London, UK ; Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Angela Carta
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Public Health and Human Sciences, University of Brescia, Brescia, Italy
| | - Md Farouk Allam
- Department of Preventive Medicine and Public Health, Faculty of Medicine, University of Cordoba, Cordoba, Spain
| | - Klaus Golka
- Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund, Dortmund, Germany
| | - Eric J Grant
- Department of Epidemiology Radiation Effects Research Foundation, Hiroshima, Japan
| | - Xuejuan Jiang
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA USA
| | - Kenneth C Johnson
- Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, ON Canada
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH USA
| | - Eliane Kellen
- Leuven University Centre for Cancer Prevention (LUCK), Leuven, Belgium
| | - Carlo La Vecchia
- Department of Clinical Medicine and Community Health, University of Milan, Milan, Italy
| | - Chih-Ming Lu
- Department of Urology, Buddhist Dalin Tzu Chi General Hospital, Dalin Township, 62247 Chiayi County Taiwan
| | - James Marshall
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY USA
| | - Kirsten Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY USA
| | - Hermann Pohlabeln
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany
| | - Stefano Porru
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Public Health and Human Sciences, University of Brescia, Brescia, Italy
| | - Gunnar Steineck
- Department of Oncology and Pathology, Division of Clinical Cancer Epidemiology, Karolinska Hospital, Stockholm, Sweden
| | - Marianne C Stern
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA USA
| | - Li Tang
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY USA
| | - Jack A Taylor
- Epidemiology Branch, and Epigenetic and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC USA
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary Care, Maastricht University Medical Centre, Maastricht, The Netherlands
| | | | - Kenji Wakai
- Department of Preventive medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Elisabete Weiderpass
- Department of Medical Epidemiology and Biostatistics, Medical Epidemiology, Karolinska Institutet, Stockholm, Sweden ; Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway ; Genetic Epidemiology Group, Folkhälsan Research Center, Helsinki, Finland ; Department of Community Medicine, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Emily White
- Fred Hutchinson Cancer Research Center, Seattle, WA USA
| | - Alicja Wolk
- Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Zuo-Feng Zhang
- Departments of Epidemiology, UCLA Center for Environmental Genomics, Fielding School of Public Health, University of California, Los Angeles (UCLA), Los Angeles, CA USA
| | - Frank Buntinx
- Department of General Practice, Katholieke Universiteit Leuven, ACHG-KU Leuven, Kapucijnenvoer 33, Blok J, bus 7001, 3000 Leuven, Belgium ; CAPHRI School for Public Health and Primary Care, University of Maastricht, Maastricht, The Netherlands
| | - Maurice P Zeegers
- NUTRIM School for Nutrition and Translational Research in Metabolism, University of Maastricht, Maastricht, The Netherlands ; CAPHRI School for Public Health and Primary Care, University of Maastricht, Maastricht, The Netherlands ; School of Cancer Sciences, University of Birmingham, Birmingham, UK
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12
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Chen F, Li Q, Yu Y, Yang W, Shi F, Qu Y. Association of vitamin C, vitamin D, vitamin E and risk of bladder cancer: a dose-response meta-analysis. Sci Rep 2015; 5:9599. [PMID: 25905583 PMCID: PMC5386108 DOI: 10.1038/srep09599] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 03/11/2015] [Indexed: 12/31/2022] Open
Abstract
A dose-response meta-analysis was conducted to assess the association of vitamin C, D, E with risk of bladder cancer. Pertinent studies were identified in PubMed and Embase. The random-effect model was used. The relative risk (95% confidence interval) of bladder cancer was 0.99 (0.95–1.03) for every 100 IU/day increment in vitamin D from diet plus supplement and 0.95 (0.90–1.00) for every 10 nmol/L increment in circulating vitamin D. The effect for every 10 mg/day increment was 0.96 (0.90–1.02) for vitamin E from diet plus supplement, 0.83 (0.72–0.95) from diet and 0.88 (0.67–1.15) from supplement, and the effect was 0.84 (0.76–0.94) for every 1 mg/dL increment in circulating α-Tocopherol and 1.22 (1.00–1.49) for every 0.1 mg/dL increment in circulating γ-Tocopherol. The observed association for vitamin D and vitamin E was significant among smokers but not among non-smokers. No significant association was found between vitamin C and risk of bladder cancer in the dose-response analysis. Based on the dose-response analysis, the risk of bladder cancer might be inversely associated with vitamin D and E (especially α-Tocopherol), but positively associated with γ-Tocopherol.
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Affiliation(s)
- Fuqiang Chen
- Department of Pain Management, Qingdao Municipal Hospital, Qingdao, China
| | - Qingshu Li
- Intensive Care Unit, Qingdao Municipal Hospital, Qingdao, China
| | - Yang Yu
- Department of Pain Management, Qingdao Municipal Hospital, Qingdao, China
| | - Wenrong Yang
- Department of Pain Management, Qingdao Municipal Hospital, Qingdao, China
| | - Fei Shi
- Department of Pain Management, Qingdao Municipal Hospital, Qingdao, China
| | - Yan Qu
- Intensive Care Unit, Qingdao Municipal Hospital, Qingdao, China
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13
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Yao B, Yan Y, Ye X, Fang H, Xu H, Liu Y, Li S, Zhao Y. Intake of fruit and vegetables and risk of bladder cancer: a dose-response meta-analysis of observational studies. Cancer Causes Control 2014; 25:1645-58. [PMID: 25248495 DOI: 10.1007/s10552-014-0469-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 09/09/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND Observational studies suggest an association between fruit and vegetables intake and risk of bladder cancer, but the results are controversial. METHODS We therefore summarized the evidence from observational studies in categorical, linear, and nonlinear, dose-response meta-analysis. Pertinent studies were identified by searching EMBASE and PubMed from their inception to August 2013. RESULTS Thirty-one observational studies involving 12,610 cases and 1,121,649 participants were included. The combined rate ratio (RR, 95 % CI) of bladder cancer for the highest versus lowest intake was 0.83 (0.69-0.99) for total fruit and vegetables, 0.81 (0.70-0.93) for total vegetables, 0.77 (0.69-0.87) for total fruit, 0.84 (0.77-0.91) for cruciferous vegetables, 0.79 (0.68-0.91) for citrus fruits, and 0.74 (0.66-0.84) for yellow-orange vegetables. Subgroup analysis showed study design and gender as possible sources of heterogeneity. A nonlinear relationship was found of citrus fruits intake with risk of bladder cancer (P for nonlinearity = 0.018), and the RRs (95 % CI) of bladder cancer were 0.87 (0.78-0.96), 0.80 (0.67-0.94), 0.79 (0.66-0.94), 0.79 (0.65-0.96), and 0.79 (0.64-0.99) for 30, 60, 90, 120, and 150 g/day. A nonlinear relationship was also found of yellow-orange vegetable intake with risk of bladder cancer risk (P for nonlinearity = 0.033). Some evidence of publication bias was observed for fruit, citrus fruits, and yellow-orange vegetables. CONCLUSION This meta-analysis supports the hypothesis that intakes of fruit and vegetables may reduce the risk of bladder cancer. Future well-designed studies are required to confirm this finding.
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Affiliation(s)
- Baodong Yao
- Shanghai Minhang Center for Disease Control and Prevention, 965 Zhongyi Road, Shanghai, 201101, China
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14
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Tang JE, Wang RJ, Zhong H, Yu B, Chen Y. Vitamin A and risk of bladder cancer: a meta-analysis of epidemiological studies. World J Surg Oncol 2014; 12:130. [PMID: 24773914 PMCID: PMC4030017 DOI: 10.1186/1477-7819-12-130] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 04/07/2014] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Epidemiological studies have reported the preventive effect of vitamin A intake on bladder cancer. However, the findings are inconsistent. To address this issue we conducted a meta-analysis to investigate the quantitative effects of vitamin A on bladder cancer. METHODS We searched MEDLINE and Embase databases and the references of the relevant articles in English to include studies on dietary or blood vitamin A for the risk of bladder cancer. We performed a meta-analysis using both fixed-effects and random-effects models. RESULTS Twenty-five articles on dietary vitamin A or blood vitamin A were included according to the eligibility criteria. The pooled risk estimates of bladder cancer were 0.82 (95% CI 0.65, 0.95) for total vitamin A intake, 0.88 (95% CI 0.73, 1.02) for retinol intake, and 0.64 (95% CI 0.38, 0.90) for blood retinol levels. We also found inverse associations between subtypes of carotenoids and bladder cancer risk. CONCLUSION The findings of this meta-analysis indicate that high vitamin A intake was associated with a lower risk of bladder cancer. Larger studies with prospective design and rigorous methodology should be considered to validate the current findings.
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Affiliation(s)
- Jian-er Tang
- Department of Urology, The First Affiliated Hospital, Huzhou Teachers College, Guangchanghou Road 158, Huzhou 313000, Zhejiang Province, China
| | - Rong-jiang Wang
- Department of Urology, The First Affiliated Hospital, Huzhou Teachers College, Guangchanghou Road 158, Huzhou 313000, Zhejiang Province, China
| | - Huan Zhong
- Department of Urology, The First Affiliated Hospital, Huzhou Teachers College, Guangchanghou Road 158, Huzhou 313000, Zhejiang Province, China
| | - Bing Yu
- Department of Urology, The First Affiliated Hospital, Huzhou Teachers College, Guangchanghou Road 158, Huzhou 313000, Zhejiang Province, China
| | - Yu Chen
- Department of Urology, The First Affiliated Hospital, Huzhou Teachers College, Guangchanghou Road 158, Huzhou 313000, Zhejiang Province, China
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15
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Li F, Zhou Y, Hu RT, Hou LN, Du YJ, Zhang XJ, Olkkonen VM, Tan WL. Egg consumption and risk of bladder cancer: a meta-analysis. Nutr Cancer 2013; 65:538-46. [PMID: 23659445 DOI: 10.1080/01635581.2013.770041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The findings of epidemiologic studies on the association between egg consumption and bladder cancer risk remain conflicting. We conducted a meta-analysis to clarify the potential association between egg consumption and bladder cancer risk. Four cohort studies and 9 case-control studies in the PubMed database through February 2012 were identified on egg consumption and risk of bladder cancer involving 2715 cases and 184,727 participants. Random-effects models were used to calculate the summary relative risk estimates (SRRE) based on the highest compared with the lowest category of egg consumption. In addition, we performed stratified analyses and sensitivity and dose-response analyses to examine the association. Overall, no significant association was observed between egg consumption and bladder cancer (SRRE = 1.11 95% CI: 0.90-1.35). However, increased risk of bladder cancer was detected in North/South America (SRRE = 1.40 95% CI: 1.05-1.86) and, moreover, fried egg intake positively associated with bladder cancer as well (SRRE = 2.04, 95% CI: 1.41-2.95). In conclusion, our findings suggest no significant association between egg consumption and bladder cancer risk, except for a possible positive relationship with the intake of fried eggs based on the limited number of studies. Additional studies, especially large prospective cohort studies, are warranted to confirm these findings.
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Affiliation(s)
- Fei Li
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, PR China
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16
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Zhang ZH, Yang LS, Sun YH. The association between milk consumption and bladder cancer risk: appraisal of a recent meta-analysis. Nutr Cancer 2013; 64:1288-9. [PMID: 23163857 DOI: 10.1080/01635581.2012.718403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Fang D, Tan F, Wang C, Zhu X, Xie L. Egg intake and bladder cancer risk: A meta-analysis. Exp Ther Med 2012; 4:906-912. [PMID: 23226747 PMCID: PMC3493787 DOI: 10.3892/etm.2012.671] [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: 05/04/2012] [Accepted: 08/03/2012] [Indexed: 11/19/2022] Open
Abstract
Egg intake has been hypothesized to promote carcinogenesis due to its potential to increase circulating levels of cholesterol. Epidemiological findings regarding the association between egg consumption and risk of bladder cancer have been inconsistent. We performed a meta-analysis of the available data. Relevant studies were identified by a PubMed database search of articles dating from between January 1980 and December 2011. We identified 4 cohort and 9 case-control studies of egg intake and risk of bladder cancer. Both fixed- and random-effects models were used to calculate the summary risk estimates (REs). The combined RE of bladder cancer for the highest compared with the lowest egg intake was 0.94 (95% CI, 0.69–1.18) and weak evidence of heterogeneity was observed. The association between egg intake and risk of bladder cancer differed significantly by geographic region, with a 28% reduced risk in Japanese. Our results provided no strong evidence of a significant association of egg consumption with bladder cancer incidence but showed a protective effect in Japanese.
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Affiliation(s)
- Danbo Fang
- Department of Urology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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18
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Ros MM, Bueno-de-Mesquita HB, Kampman E, Büchner FL, Aben KKH, Egevad L, Overvad K, Tjønneland A, Roswall N, Clavel-Chapelon F, Boutron-Ruault MC, Morois S, Kaaks R, Teucher B, Weikert S, von Ruesten A, Trichopoulou A, Naska A, Benetou V, Saieva C, Pala V, Ricceri F, Tumino R, Mattiello A, Peeters PHM, van Gils CH, Gram IT, Engeset D, Chirlaque MD, Ardanazx E, Rodríguez L, Amanio P, Gonzalez CA, Sánchez MJ, Ulmert D, Ernström R, Ljungberg B, Allen NE, Key TJ, Khaw KT, Wareham N, Slimani N, Romieu I, Kiemeney LA, Riboli E. Fruit and vegetable consumption and risk of aggressive and non-aggressive urothelial cell carcinomas in the European Prospective Investigation into Cancer and Nutrition. Eur J Cancer 2012; 48:3267-77. [PMID: 22863148 DOI: 10.1016/j.ejca.2012.05.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 05/22/2012] [Accepted: 05/31/2012] [Indexed: 02/09/2023]
Abstract
BACKGROUND Many epidemiological studies have examined fruit and vegetable consumption in relation to the risk of urothelial cell carcinoma (UCC) of the bladder, but results are inconsistent. The association between fruit and vegetable consumption and UCC risk may vary by bladder tumour aggressiveness. Therefore, we examined the relation between fruit and vegetable consumption and the risk of aggressive and non-aggressive UCC in the European Prospective Investigation into Cancer and Nutrition (EPIC). METHODS After 8.9 years of follow-up, 947UCC were diagnosed among 468,656 EPIC participants. Of these, 421 could be classified as aggressive UCC and 433 as non-aggressive UCC cases. At recruitment, fruit and vegetable consumption was assessed by validated dietary questionnaires. Multivariable hazard ratios were estimated using Cox regression stratified by age, sex and center and adjusted for smoking status, duration and intensity of smoking, and energy intake. RESULTS Total consumption of fruits and vegetables was not associated with aggressive UCC nor with non-aggressive UCC. A 25 g/day increase in leafy vegetables and grapes consumption was associated with a reduced risk of non-aggressive UCC (hazard ratio (HR) 0.88; 95%confidence interval (CI) 0.78-1.00 and HR 0.87; 95%CI 0.77-0.98, respectively), while the intake of root vegetables was inversely associated with risk of aggressive UCC (HR 0.87; 95%CI 0.77-0.98). CONCLUSION Our study did not confirm a protective effect of total fruit and/or vegetable consumption on aggressive or non-aggressive UCC. High consumption of certain types of vegetables and of fruits may reduce the risk of aggressive or non-aggressive UCC; however chance findings cannot be excluded.
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Affiliation(s)
- Martine M Ros
- Centre for Nutrition and Health, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.
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19
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Allen NE, Appleby PN, Key TJ, Bueno-de-Mesquita HB, Ros MM, Kiemeney LALM, Tjønneland A, Roswall N, Overvad K, Weikert S, Boeing H, Chang-Claude J, Teucher B, Panico S, Sacerdote C, Tumino R, Palli D, Sieri S, Peeters P, Quirós JR, Jakszyn P, Molina-Montes E, Chirlaque MD, Ardanaz E, Dorronsoro M, Khaw KT, Wareham N, Ljungberg B, Hallmans G, Ehrnström R, Ericson U, Gram IT, Parr CL, Trichopoulou A, Karapetyan T, Dilis V, Clavel-Chapelon F, Boutron-Ruault MC, Fagherrazzi G, Romieu I, Gunter MJ, Riboli E. Macronutrient intake and risk of urothelial cell carcinoma in the European prospective investigation into cancer and nutrition. Int J Cancer 2012; 132:635-44. [PMID: 22618737 DOI: 10.1002/ijc.27643] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 04/13/2012] [Indexed: 12/19/2022]
Abstract
Previous studies have suggested that dietary factors may be important in the development of bladder cancer. We examined macronutrient intake in relation to risk of urothelial cell carcinoma among 469,339 men and women in the European Prospective Investigation into Cancer and Nutrition. Associations were examined using Cox regression, stratified by sex, age at recruitment and centre and further adjusted for smoking status and duration, body mass index and total energy intake. After an average of 11.3 years of follow-up, 1,416 new cases of urothelial cell carcinoma were identified. After allowing for measurement error, a 3% increase in the consumption of energy intake from animal protein was associated with a 15% higher risk (95% confidence interval [CI]: 3-30%; p(trend) = 0.01) and a 2% increase in energy from plant protein intake was associated with a 23% lower risk (95% CI: 36-7%, p(trend) = 0.006). Dietary intake of fat, carbohydrate, fibre or calcium was not associated with risk. These findings suggest that animal and/or plant protein may affect the risk of urothelial cell carcinoma, and examination of these associations in other studies is needed.
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Affiliation(s)
- Naomi E Allen
- Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom.
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20
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Dietary intake of meat, fruits, vegetables, and selective micronutrients and risk of bladder cancer in the New England region of the United States. Br J Cancer 2012; 106:1891-8. [PMID: 22568968 PMCID: PMC3364127 DOI: 10.1038/bjc.2012.187] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background: Despite many studies on diet and bladder cancer, there are areas that remain unexplored including meat mutagens, specific vegetable groups, and vitamins from diet. Methods: We conducted a population-based case–control study of bladder cancer in Maine, New Hampshire, and Vermont. A total of 1171 cases were ascertained through hospital pathology records and cancer registries from 2001 to 2004. Overall, 1418 controls were identified from the Department of Motor Vehicles (<65 years) and Center for Medicaid and Medicare Services (65–79 years) and were frequency-matched to cases by state, sex, and age (within 5 years). Diet was assessed with a self-administered Diet History Questionnaire. Unconditional logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI). Results: Processed meat intake was positively associated with bladder cancer (highest vs lowest quartile OR: 1.28; 95% CI: 1.00–1.65; Ptrend=0.035), with a stronger association for processed red meat (OR: 1.41; 95% CI: 1.08–1.84; Ptrend=0.024). There were no associations between intake of fruits or vegetables and bladder cancer. We did, however, observe an inverse association with vitamin B12 intake (OR: 0.77; 95% CI: 0.61–0.99; P=0.019). Conclusion: Vitamin B12 from diet may be protective against bladder cancer, whereas consuming processed meat may increase risk.
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Lin J, Forman MR, Wang J, Grossman HB, Chen M, Dinney CP, Hawk ET, Wu X. Intake of red meat and heterocyclic amines, metabolic pathway genes and bladder cancer risk. Int J Cancer 2012; 131:1892-903. [PMID: 22261697 DOI: 10.1002/ijc.27437] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 12/08/2011] [Indexed: 11/10/2022]
Abstract
We analyzed the association between meat intake, heterocyclic amines (HCAs) and bladder cancer (BC) risk in a large case-control study comprised of 884 BC cases and 878 healthy controls, recruited from 1999 to 2009. Epidemiologic and dietary data were collected via an in-person interview. Compared to the lowest quartile of red meat intake, the odds ratios (ORs) for the second, third and fourth quartiles were 1.17 (95% CI: 0.87-1.58), 1.47 (95% CI: 1.09-1.99) and 1.95 (95% CI: 1.41-2.68), respectively, (p-for trend <0.001). In a subset of participants with intakes of HCAs available, compared with those with the lowest quartile of intake, the ORs for the second, third and fourth quartiles were 1.47 (95% CI: 0.60-3.64), 2.58 (95% CI: 1.09-6.11) and 3.32 (95% CI: 1.37-8.01), respectively, (p for trend <0.001). In cumulative analysis of SNPs in the pathway, compared with subjects carrying 0-4 unfavorable genotypes, subjects carrying 5 and 6 or more unfavorable genotypes were at 1.60-fold (95% CI: 1.20-2.12) and 2.37-fold (95% CI: 1.82-3.10) increased risk, respectively. Moreover, subjects carrying six or more unfavorable genotypes and whose red meat intake was in the highest quartile were at 5.09-fold increased risk (95% CI: 2.89-8.96; p < 0.001). These results strongly support that high red meat intake, high intake of HCAs and carrying high number of unfavorable genotypes in the HCA metabolic pathways are associated with increased risk of BC in the study population.
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Affiliation(s)
- Jie Lin
- Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
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Li F, An SL, Zhou Y, Liang ZK, Jiao ZJ, Jing YM, Wan P, Shi XJ, Tan WL. Milk and dairy consumption and risk of bladder cancer: a meta-analysis. Urology 2012; 78:1298-305. [PMID: 22137695 DOI: 10.1016/j.urology.2011.09.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/25/2011] [Accepted: 09/07/2011] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To explore potential relations between the intake of milk or dairy products and the risk of bladder cancer. METHODS Eligible studies published up to May 2011 were retrieved via both computer searches and manual review of references. Random-effects models were used to calculate summary relative risk estimates (SRRE) based on high-contrast to low-intake values. Sensitivity and influence analyses were conducted, and heterogeneity among study results was explored through stratified analyses by study design, gender, geographic region, year of publication, or whether or not adjustment for several confounders (ie, age, gender, body mass index, smoking, and total energy intake). RESULTS We extracted data from 14 studies on milk (involving 4879 cases) and 6 studies on dairy products (3087 cases). The total study population was up to 324,241 individuals. Overall, there was no significant association between milk intake and bladder cancer (SRRE 0.89, 95% CI 0.77-1.02). However, an inverse association was found in the United States (SRRE 0.88, 95% CI .79-.99). In addition, no significant association was observed between consumption of dairy products and risk of bladder cancer (SRRE 0.95, 95% CI .71-1.27), though an inverse association was detected in the Japanese population (SRRE 0.56, 95% CI .40-.80). CONCLUSION There appears to be enough evidence to support the null hypothesis. The overall result was not statistically significant. The findings of this meta-analysis are not supportive of an independent relationship between the intake of milk or dairy products and the risk of bladder cancer. However, these findings are based on limited research. Further efforts should be made to confirm these findings.
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Affiliation(s)
- Fei Li
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Mao QQ, Dai Y, Lin YW, Qin J, Xie LP, Zheng XY. Milk consumption and bladder cancer risk: a meta-analysis of published epidemiological studies. Nutr Cancer 2011; 63:1263-71. [PMID: 22043867 DOI: 10.1080/01635581.2011.614716] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Studies investigating the association of milk consumption with bladder cancer risk have reported inconsistent findings. We conducted a meta-analysis of published cohort and case-control studies to pool the risk estimates of the association between milk intake and bladder cancer. We quantified associations with bladder cancer using meta-analysis of odds ratio (OR) associated with the highest vs. the lowest category of milk intake using fixed- or random-effect models depending on the heterogeneity of effects among studies. Nineteen cohort and case-control studies were eligible for inclusion. High milk intake was significantly associated with decreased risk of bladder cancer (OR, 0.84; 95% CI, 0.71-0.97) when comparing the highest with the lowest category of milk intake. The inverse association was stronger in Asia (OR, 0.60; 95% CI, 0.40-0.81) than North America (OR, 0.89; 95% CI, 0.76-1.03), and no association was observed in Europe (OR, 1.05; 95% CI, 0.85-1.26). This relationship also varied significantly by specific dairy products. Our results suggest that milk may be related to the reduction of bladder cancer risk. Further studies need to clarify the biological mechanisms.
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Affiliation(s)
- Qi-Qi Mao
- Department of Urology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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Li Z, Yu J, Miao Q, Sun S, Sun L, Yang H, Hou L. The association of fish consumption with bladder cancer risk: a meta-analysis. World J Surg Oncol 2011; 9:107. [PMID: 21929755 PMCID: PMC3182909 DOI: 10.1186/1477-7819-9-107] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Accepted: 09/19/2011] [Indexed: 02/07/2023] Open
Abstract
Background The association between fish consumption and risk of bladder cancer has not been established yet. The results from epidemiological studies are inconsistent. Methods We conducted a meta-analysis of cohort and case-control studies on the relationship between fish intake and bladder cancer. We quantified associations with bladder cancer using meta-analysis of relative risk associated to the highest versus the lowest category of fish intake using random effect models. Heterogeneity among studies was examined using Q and I2 statistics. Publication bias was assessed using the Begg's funnel plot. Results Five cohort and 9 case-control studies were eligible for inclusion. The combined relative risk showed that fish consumption was negatively, but not significantly, associated with a decreased risk of bladder cancer (relative risk, 0.86; 95% confidence interval, 0.61-1.12). In subgroup analyses, there was no evidence that study design, geographical region, case sample size, or exposure assessment substantially influenced the estimate of effects. Conclusion The overall current literature on fish consumption and the risk of bladder cancer suggested no association. Because of the limited number of studies, further well-designed prospective studies are needed to explore the effect of fish on bladder cancer.
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Affiliation(s)
- Zhongyi Li
- Department of Urology, Affiliated Hospital of School of Medicine of Ningbo University, Ningbo, Zhejiang, 315020, China.
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Meat intake and risk of bladder cancer: a meta-analysis. Med Oncol 2011; 29:848-55. [DOI: 10.1007/s12032-011-9985-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 05/11/2011] [Indexed: 01/03/2023]
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Intake of α-linolenic acid and other fatty acids in relation to the risk of bladder cancer: results from the New Hampshire case-control study. Br J Nutr 2011; 106:1070-7. [PMID: 21736846 DOI: 10.1017/s0007114511001346] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The role of dietary fat in bladder cancer aetiology is currently unclear due to few studies, equivocal findings and a lack of information on important dietary fatty acids. The aim of the present study was to investigate the association between the intake of major dietary fats and fatty acids and the risk of bladder cancer. A case-control study was conducted in New Hampshire, USA. Dietary data were collected from 322 cases and 239 controls, and OR and 95 % CI were calculated using unconditional logistic regression. Adjustment was made for potential confounders: sex, age, smoking status, pack-years smoked, cholesterol and energy intake. Statistically significant reduced odds of bladder cancer were observed for high intakes (highest quartile v. lowest quartile) of α-linolenic acid (ALA) (OR 0·26, 95 % CI 0·10, 0·65; P for trend = 0·01) and vegetable fat (OR 0·39, 95 % CI 0·18, 0·86; P for trend = 0·03). Borderline statistically significant reduced odds were detected for polyunsaturated fat (OR 0·43, 95 % CI 0·19, 0·98; P for trend = 0·07) and linoleic acid (OR 0·43, 95 % CI 0·19, 0·96; P for trend = 0·06). These fats and fatty acids were highly correlated and following adjustment for each other, the only potential inverse association to remain was for ALA. The present findings suggest that ALA may have a protective role against developing bladder cancer; however, further investigation and replication in other epidemiological studies are required. Future research should focus on the type, source and quantities of different dietary fatty acids consumed.
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Consumption of animal products, olive oil and dietary fat and results from the Belgian case–control study on bladder cancer risk. Eur J Cancer 2011; 47:436-42. [DOI: 10.1016/j.ejca.2010.09.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 09/14/2010] [Accepted: 09/16/2010] [Indexed: 11/23/2022]
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Brinkman MT, Buntinx F, Kellen E, Dagnelie PC, Van Dongen MCJM, Muls E, Zeegers MP. Dietary intake of micronutrients and the risk of developing bladder cancer: results from the Belgian case-control study on bladder cancer risk. Cancer Causes Control 2011; 22:469-78. [PMID: 21203820 PMCID: PMC3042097 DOI: 10.1007/s10552-010-9718-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Accepted: 12/20/2010] [Indexed: 01/15/2023]
Abstract
OBJECTIVE We aimed to investigate the effect of dietary intake of micronutrients that are metabolized and excreted via the urinary tract on bladder cancer risk. METHODS A semi-quantitative 322 item food frequency questionnaire (FFQ) was used to collect dietary data from 200 bladder cancer cases and 386 control subjects participating in the Belgian case-control study on bladder cancer risk. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using unconditional logistic regression adjusting for age, sex, smoking characteristics, occupational exposures, and energy intake. RESULTS We observed a positive association between calcium intake and bladder cancer (OR: 1.77; 95% CI: 1.00-3.15; p-trend = 0.049) and increased odds, although not statistically significant, for highest tertile of phosphorus intake (OR: 1.82; 95% CI: 0.95-3.49; p-trend = 0.06). We identified possible modification of the effects of both calcium and phosphorus by level of magnesium intake. Increased odds of bladder cancer were also observed for participants with highest intake of phosphorus and lowest intake of vitamin D (OR: 4.25; 95% CI: 1.44-12.55) and among older participants with the highest intakes of calcium (OR: 1.90; 95% CI: 1.08-3.36) and phosphorus (OR: 2.02; 95% CI: 1.05-3.92). CONCLUSION The positive associations we observed between bladder cancer and intake of calcium and phosphorus require confirmation by other studies. The balances between inter-related micronutrients also warrant further examination.
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Affiliation(s)
- Maree T Brinkman
- Department of General Practice, Katholieke Universiteit Leuven, Comprehensive Cancer Institute Limburg (LIKAS), Leuven, Belgium.
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Risk of transitional-cell carcinoma of the bladder in first- and second-generation immigrants to Sweden. Eur J Cancer Prev 2010; 19:275-9. [DOI: 10.1097/cej.0b013e3283387728] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lin J, Kamat A, Gu J, Chen M, Dinney CP, Forman MR, Wu X. Dietary intake of vegetables and fruits and the modification effects of GSTM1 and NAT2 genotypes on bladder cancer risk. Cancer Epidemiol Biomarkers Prev 2009; 18:2090-7. [PMID: 19549811 DOI: 10.1158/1055-9965.epi-08-1174] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We analyzed the association between intakes of vegetables and fruits as defined by the U.S. Department of Agriculture pyramid food groups and bladder cancer risk using data collected in a large case-control study. The study included 884 histologically confirmed bladder cancer cases and 878 healthy controls matched to cases by age (+/-5 years), gender, and ethnicity. Significant inverse associations were observed for intakes of total vegetables, cruciferous vegetables, orange vegetables, dark green vegetables, and bladder cancer risk. Compared with those in the lowest quartile of total vegetable intake, the odds ratios for the 2nd, 3rd, and 4th quartiles of total vegetable intake were 0.84 [95% confidence interval (95% CI), 0.64-1.10], 0.71 (95% CI, 0.54-0.95), and 0.67 (95% CI, 0.50-0.90), respectively (P for trend = 0.004). Compared with those in the lowest quartile, those in the highest quartile of cruciferous vegetable intake had an odds ratio of 0.69 (95% CI, 0.52-0.92; P for trend = 0.001) and those in the highest quartile of orange vegetable intake had an odds ratio of 0.68 (95% CI, 0.52-0.91; P for trend = 0.006). Furthermore, the protective effect of cruciferous vegetables was more evident in subjects carrying GSTM1-null (odds ratio, 0.43; 95% CI, 0.25-0.73 for the 4th quartile of intake) and NAT2-slow genotypes (odds ratio, 0.56; 95% CI, 0.33-0.97 for the 4th quartile of intake). No association was observed for intakes of total fruits or citrus fruits. Our data strongly support that high vegetable consumption, especially cruciferous vegetable intake, may protect against bladder cancer and that genetic variants of GSTM1 and NAT2 may modify the association.
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Affiliation(s)
- Jie Lin
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Abstract
BACKGROUND The food frequency questionnaire (FFQ) has been used throughout the world for epidemiological purposes. Because dietary habits vary greatly, the FFQ must be tailored for use with specific populations. The usefulness of FFQs in Japan was assessed by reviewing questionnaires developed and validated in that country. METHODS A literature search was conducted to identify articles on the development and/or validation of FFQs for Japanese populations. For each FFQ identified, validation studies were used to abstract its characteristics and information. The correlation coefficients between diet records (DRs) and FFQ estimates and those between the same FFQs completed twice were used to evaluate validity and reproducibility, respectively, of the questionnaires. RESULTS Twenty-one eligible FFQs were identified. They were found to be reasonably valid and reproducible. The median of correlation coefficients between DRs and FFQs ranged from 0.31 to 0.56 for target nutrients, and that between the same FFQs completed twice within a period of 9 months to 1 year ranged from 0.50 to 0.72. Relatively poor validity was found for FFQ estimates on consumption of potatoes, seaweed, sodium, niacin, and polyunsaturated fatty acids. For the purpose of analysis, FFQs were divided into long FFQs (97 or more food items) and short FFQs (<70 items); the former had slightly higher validity. CONCLUSION FFQs are useful for assessing dietary intake in Japan, although careful consideration is required for the food groups and nutrients for which FFQs had low validity.
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Affiliation(s)
- Kenji Wakai
- Department of Preventive Medicine/Biostatistics and Medical Decision Making, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan.
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Hemelt M, Yamamoto H, Cheng KK, Zeegers MPA. The effect of smoking on the male excess of bladder cancer: a meta-analysis and geographical analyses. Int J Cancer 2009; 124:412-9. [PMID: 18792102 DOI: 10.1002/ijc.23856] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Smoking is considered the primary risk factor for bladder cancer. Although smoking prevalence and bladder cancer incidence vary around the world, bladder cancer is on average 4 times more common in males than in females. This article describes the observed male-female incidence ratio of bladder cancer for 21 world regions in 2002 and 11 geographical areas during the time period 1970-1997. A meta-analysis, including 34 studies, was performed to ascertain the increased risk for bladder cancer in males and females when smoking. The summary odds ratios (SORs) calculated in the meta-analysis were used to estimate the male-female incidence ratio of bladder cancer that would be expected for hypothetical smoking prevalence scenarios. These expected male-female incidence ratios were compared with the observed ratios to evaluate the role of smoking on the male excess of bladder cancer. The male-female incidence ratio of bladder cancer was higher than expected worldwide and over time, based on a smoking prevalence of 75% in males, 10% in females and an increased risk (SOR) of bladder cancer associated with smoking of 4.23 for males and 1.35 for females, respectively. This implied that, at least in the Western world, smoking can only partially explain the difference in bladder cancer incidence. Consequently, other factors are responsible for the difference in bladder cancer incidence.
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Affiliation(s)
- Marjolein Hemelt
- Unit of Genetic Epidemiology, Department of Public Health and Epidemiology, University of Birmingham, Birmingham, United Kingdom.
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Larsson SC, Andersson SO, Johansson JE, Wolk A. Fruit and Vegetable Consumption and Risk of Bladder Cancer: A Prospective Cohort Study. Cancer Epidemiol Biomarkers Prev 2008; 17:2519-22. [DOI: 10.1158/1055-9965.epi-08-0407] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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García-Closas R, García-Closas M, Kogevinas M, Malats N, Silverman D, Serra C, Tardón A, Carrato A, Castaño-Vinyals G, Dosemeci M, Moore L, Rothman N, Sinha R. Food, nutrient and heterocyclic amine intake and the risk of bladder cancer. Eur J Cancer 2007; 43:1731-40. [PMID: 17596928 DOI: 10.1016/j.ejca.2007.05.007] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 04/27/2007] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Fruit and vegetable intake has been linked to bladder cancer risk; however, evidence for other foods or specific dietary factors is inconclusive. The association between diet and bladder cancer risk was evaluated among 912 incident bladder cancer cases and 873 controls in Spain. Data were consistent with a reduced bladder cancer risk associated with high fruit intake; however, the association was significant only among current smokers (OR (95% CI) for 5th versus 1st quintile: 0.5 (0.3-0.9), p trend=0.009). Evaluation of food subgroups showed significant inverse associations with high intakes of berries, Liliaceae vegetables and yellow-orange vegetables. The latter association was stronger among individuals with the GSTM1 present than the null genotype (0.4 (0.2, 0.7) and 0.9 (0.6, 1.3), respectively; p for interaction=0.04). Meat or fish intake, their cooking methods or level of doneness, or heterocyclic amine intakes were not significantly associated with risk. Intake of folate, other B-vitamins (B12, B6, B2) and retinol was also associated with a reduced risk, the strongest associations being for vitamin B6 (0.6 (0.4, 0.8) p trend=0.0006) and retinol (0.6 (0.4-0.9) p trend=0.004). Our findings indicate that fruit and vegetable intake, as well as B-vitamin and retinol intake might be associated with a reduced bladder cancer risk.
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Affiliation(s)
- Reina García-Closas
- Research Unit, University Hospital of Canary Islands, La Laguna, Tenerife, Spain
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Abstract
Bladder cancer (Bc) with an incidence of 8.6% ranks fourth in males and with an incidence of 3.5% ranks eighth in females in Germany. The study of Cole demonstrating that coffee drinking poses a risk for developing Bc raised interest in primary prevention. In the meantime, however, 42 case-control studies could disprove this finding. Cigarette smoking raises the Bc risk threefold. Responsible are among others arylamines which are activated in the liver, but also detoxified. A genetically caused lack of transferases is responsible for every third Bc. Another risk factor is contributed by permanent hair dyes. Similarly to smoking, an arylamine is taken up by the body and has to be detoxified by transferases in the liver and skin. Furthermore, a chronic urinary tract infection may be related to Bc. Thus, the best prevention is the reduction of risk factors.A high fluid intake--irrespective of its kind--reduces the Bc risk by approximately 50%. Particularly smokers should realize that they can lower their risk of developing Bc by almost 70% with a high fluid intake. A connection between alcohol consumption and Bc development has never been shown. Vitamins A, B, and C were extensively investigated in epidemiological studies. Usefulness for primary prevention of Bc was not convincingly demonstrated. Interestingly, folic acid-containing food may reduce the Bc risk for smokers. Fruits and vegetables possess only a weak preventive efficacy. However, copious fruit consumption may reduce the risk for smokers by almost 50%. The trace element selenium does not possess a proven protection; however, it has been shown that persons with a high selenium plasma level have a lower incidence of Bc. Among probiotics yogurt containing Lactobacillus casei is particularly useful in smokers according to one study. Finally, the preventive action of NSAIDs is controversial. Surprisingly, users of analgetics have a low incidence of Bc.
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Affiliation(s)
- J E Altwein
- Chirurgische Klinik München-Bogenhausen, Denningerstrasse 44, 81679 Munich, Germany.
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Holick CN, Giovannucci EL, Stampfer MJ, Michaud DS. A prospective study of fish, marine fatty acids, and bladder cancer risk among men and women (United States). Cancer Causes Control 2007; 17:1163-73. [PMID: 17006722 DOI: 10.1007/s10552-006-0059-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Accepted: 06/30/2006] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To evaluate prospectively the association between intakes of fish, marine fatty acids, and bladder cancer risk in two ongoing cohorts, the Health Professionals Follow-up Study and the Nurses' Health Study. METHODS During 16 and 18 years of follow-up, 501 and 235 incident cases of bladder cancer were diagnosed among men and women, respectively. Cox proportional hazard models were used to estimate incidence rate ratios (RR) and 95% confidence intervals (CI) between fish intake and bladder cancer risk adjusting for age, total caloric intake, pack-years of cigarette smoking, and current smoking. RESULTS We observed no significant overall association between total fish intake and bladder cancer risk, even when we compared >/=1 servings of fish per day to fish intake </=1-3 servings per month. Among men, a statistically significant lower risk of bladder cancer was observed among men consuming fish or high marine fatty acid, after excluding the first 4 years of follow-up (MV RR = 0.60; 95% CI, 0.38-0.94, for >/=1 total fish servings per day compared to </=1-3 servings per month). CONCLUSIONS Overall, these findings suggest that fish intake is not likely to be appreciably associated with the risk of bladder cancer.
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Affiliation(s)
- Crystal N Holick
- Department of Nutrition, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
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Baena AV, Allam MF, Del Castillo AS, Díaz-Molina C, Requena Tapia MJ, Abdel-Rahman AG, Navajas RFC. Urinary bladder cancer risk factors in men: a Spanish case–control study. Eur J Cancer Prev 2006; 15:498-503. [PMID: 17106329 DOI: 10.1097/01.cej.0000215618.05757.04] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The rising incidence of urinary bladder cancer is alarming and potential relationships with different risk factors have been postulated. The purpose of this study was to examine the possible relationship between different environmental risk factors and urinary bladder cancer. All men with urinary bladder cancer who were admitted to the Department of Urology of Reina Sofia University Hospital of Cordoba, Spain over 1 year were included in our study. Men were administered an interview questionnaire, which included data on history of known urinary bladder cancer risk factors. Comparisons between men with urinary bladder cancer (cases) and those with nonmalignant urological disease (controls) were made. The study included 74 cases and 89 controls. The variables associated with malignant lesions on univariate analysis were age, smoking and drinking alcohol. Meanwhile, fish, poultry and beef consumption were proved to be protective factors. The risk factors identified by the logistic regression analysis were age, smoking and fluid intake. The independent protective factors on the multivariate analysis were fish and poultry consumptions. Smoking was found to be the principal independent risk factors for urinary bladder cancer. Our results call for further investigation of urinary bladder cancer risk factors; future studies should preferably be performed on large prospective cohorts, to increase their validity.
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Affiliation(s)
- Antonio Varo Baena
- Section of Epidemiology, Province Delegation of Health, Andalucian Health Service, University of Cordoba, Spain
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Abstract
Our aim was to review the epidemiological literature on possible cancer-preventive effects of the consumption of fruits and vegetables in humans, to quantify the effect of high versus low consumption of fruits and vegetables, and to give an overall assessment of the existing evidence. We based our work on an expert meeting conducted by the International Agency for Research on Cancer in 2003. A qualitative reading and evaluation of relevant articles on the cancer-preventive effect of the consumption of fruits and vegetables was made followed by the calculation of the mean relative risk and range for cohort and case-control studies separately. The possible population-preventable fraction for modifying diet in relation to fruit and vegetable consumption was calculated as well as an overall statement about the degree of evidence for the cancer-preventive effect of fruit and vegetable consumption for each cancer site. There is limited evidence for a cancer-preventive effect of the consumption of fruits and vegetables for cancer of the mouth and pharynx, esophagus, stomach, colon-rectum, larynx, lung, ovary (vegetables only), bladder (fruit only), and kidney. There is inadequate evidence for a cancer-preventive effect of the consumption of fruits and vegetables for all other sites. Applying this range of risk difference to the range of prevalence of low intake, the preventable fraction for low fruit and vegetable intake would fall into the range of 5-12%. It is important to recognize that this is only a crude range of estimates and that the proportion of cancers that might be preventable by increasing fruit and vegetable intake may vary beyond this range for specific cancer sites and across different regions of the world.
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Affiliation(s)
- Harri Vainio
- Finnish Institute of Occupational Health, Helsinki, Finland
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Kellen E, Zeegers M, Paulussen A, Van Dongen M, Buntinx F. Fruit consumption reduces the effect of smoking on bladder cancer risk. The Belgian case control study on bladder cancer. Int J Cancer 2006; 118:2572-8. [PMID: 16380991 DOI: 10.1002/ijc.21714] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We have hypothesized that consumption of fruit and vegetables may be associated with reduced risk of bladder cancer and that this may interact with cigarette smoking and metabolic genetic polymorphisms. A population-based case-control study was performed in the Belgian province of Limburg among 200 cases and 385 controls. Logistic regression was performed to calculate odds ratios (ORs) for bladder cancer occurrence with corresponding 95% confidence intervals (95% CI). Effect modification by smoking was investigated. We also evaluated interaction between fruit intake and GSTM1, GSTT1, NAT2 and SULT1A1 amongst "ever-smokers." Total vegetable intake was not significantly associated with the risk of bladder cancer (OR 1.15, 95% CI: 0.70-1.88 for the highest compared to the lowest tertile). However, total fruit intake was negatively associated with bladder cancer risk (OR 0.61, 95% CI 0.37-0.99 comparing the same tertiles). Among individuals with low daily fruit consumption, ever smokers had a highly increased risk of bladder cancer risk (OR: 4.23, 95% CI: 1.91-9.40). By increasing the daily fruit consumption, the risk of "ever-smokers" for developing bladder cancer decreased, however it remained significant (OR: 2.15; 95CI%: 1.15-4.05). No interaction was identified between the different genotypes and fruit consumption. We conclude that fruit consumption may decrease the effect of smoking on developing bladder cancer. Antioxidants, found in fruit, may protect against the damage caused by free radicals found in cigarette smoke. Metabolic polymorphisms appear not to modify this relation.
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Affiliation(s)
- Eliane Kellen
- Department of General Practice, Comprehensive Cancer Institute Limburg, Katholieke Universiteit Leuven, Belgium.
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Holick CN, De Vivo I, Feskanich D, Giovannucci E, Stampfer M, Michaud DS. Intake of Fruits and Vegetables, Carotenoids, Folate, and Vitamins A, C, E and Risk of Bladder Cancer Among Women (United States). Cancer Causes Control 2005; 16:1135-45. [PMID: 16215863 DOI: 10.1007/s10552-005-0337-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2005] [Accepted: 06/13/2005] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To examine the relation between fruits and vegetables, carotenoids, folate, and vitamins A, C, E and the risk of bladder cancer in a prospective study of women. METHODS A total of 237 incident bladder cancer cases were documented during 20 years of follow-up among 88,796 women enrolled in the Nurses' Health Study. Dietary intake was assessed by food-frequency questionnaires every two to four years and incident diagnosis of bladder cancer was ascertained every two years. Cox proportional hazard models were used to estimate incidence rate ratios (RR) and 95% confidence intervals (CI) for bladder cancer risk, adjusting for age, pack-years of smoking, current smoking, and total caloric intake. RESULTS Consumption of total fruits and vegetables was not associated with bladder cancer risk (RR = 1.08, 95% CI = 0.70-1.65, for > 5.5 compared to < 2.5 servings per day). Similarly, dietary intakes of carotenoids, folate, and vitamins A, C, E, were not related to bladder cancer risk. No association was observed between supplemental intake of multivitamins, vitamins A, C, E and bladder cancer risk. CONCLUSIONS We did not observe any association for fruit and vegetable consumption or vitamin intake and bladder cancer risk among women.
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Affiliation(s)
- Crystal N Holick
- Department of Nutrition, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA.
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42
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Sugie S, Vinh PQ, Rahman KMW, Ushida J, Kohno H, Suzuki R, Hara A, Quang LB, Tanaka T, Mori H. Suppressive effect of 1,4-phenylene diisothiocyanate on N-butyl-N-(4-hydroxybutyl)nitrosamine-induced urinary bladder carcinogenesis in male ICR mice. Int J Cancer 2005; 117:524-30. [PMID: 15929075 DOI: 10.1002/ijc.21233] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The modifying effects of dietary administration of 1,4-phenylene diisothiocyanate (DITC) on N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN)-induced urinary bladder carcinogenesis during the initiation and post-initiation phases were examined in male ICR mice. Five-week-old animals were divided into 5 groups. Groups 1-3 were given BBN (500 ppm) in drinking water for 6 weeks starting at age 6 week. Mice in Group 2 were given the diet containing 100 ppm DITC for 8 weeks during the initiation phase, starting 1 week before BBN exposure. Animals in Group 3 were fed the experimental diet for 24 weeks during the post-initiation phase starting 1 week after the cessation of BBN exposure. Mice in Group 4 were given only the diet containing the test compound, and those in Group 5 were given the basal diet alone throughout the experiment (32 weeks). The frequency of bladder lesions, neoplasms, dysplasia and hyperplasia, was analyzed histopathologically. The cell-proliferation activity estimated by the 5-bromodeoxyuridine labeling index (BrdU-LI), and cell cycle progression by counting cyclin D1-positive cell ratios were compared among the groups using immunohistochemistry. Administration of DITC in the initiation phase reduced significantly the incidence of urinary bladder carcinoma and dysplasia. The frequencies of any lesions of urinary bladder were not reduced by DITC in post-initiation phase. Dietary exposure of this agent in initiation phase reduced significantly both BrdU-LI and cyclin D1-positive cell ratios in any bladder lesions. Administration of DITC in post-initiation phase also significantly reduced BrdU-LI in bladder neoplasms and hyperplasia and cyclin D1-positive cell ratios in urinary bladder carcinoma as well as dysplasia. These results suggest that dietary DITC could be a preventive agent against BBN-induced bladder carcinogenesis in mice when fed during the initiation phase.
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Affiliation(s)
- Shigeyuki Sugie
- Department of Pathology, Kanazawa Medical University, Uchinada, Ishikawa, Japan.
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Raghavan M, Knapp DW, Bonney PL, Dawson MH, Glickman LT. Evaluation of the effect of dietary vegetable consumption on reducing risk of transitional cell carcinoma of the urinary bladder in Scottish Terriers. J Am Vet Med Assoc 2005; 227:94-100. [PMID: 16013542 DOI: 10.2460/javma.2005.227.94] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the effects of vegetable consumption and vitamin supplementation on the risk of developing transitional cell carcinoma (TCC) of the urinary bladder in Scottish Terriers. DESIGN Case-control study. ANIMALS 92 adult Scottish Terriers with TCC (cases) and 83 Scottish Terriers with other conditions (controls). PROCEDURE Owners of dogs with TCC completed a questionnaire regarding their dogs' diet and intake of vitamin supplements in the year prior to diagnosis of TCC; owners of control dogs completed the questionnaire for a comparable time period. The risk (odds ratio [OR]) of developing TCC associated with diet and vitamin supplementation was determined by use of logistic regression. RESULTS After adjustment for age, weight, neuter status, and coat color, there was an inverse association between consumption of vegetables at least 3 times/wk (OR, 0.30; 95% confidence interval [CI], 0.15 to 0.62) and risk of developing TCC. For individual vegetable types, the risk of developing TCC was inversely associated with consumption of green leafy vegetables (OR, 0.12; 95% CI, 0.01 to 0.97) and yellow-orange vegetables (OR, 0.31; 95% CI, 0.14 to 0.70). Consumption of cruciferous vegetables was not significantly associated with a similar reduction in risk of developing TCC (OR, 0.22; CI, 0.04 to 1.11). The power of the study to detect a 50% reduction in TCC risk associated with daily vitamin supplementation was considered low (25%). CONCLUSIONS AND CLINICAL RELEVANCE Results suggest that consumption of certain vegetables may prevent or slow the development of TCC in Scottish Terriers.
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Affiliation(s)
- Malathi Raghavan
- Department of Veterinary Pathobiology, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907-2027, USA
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Radosavljević V, Janković S, Marinković J, Dokić M. Diet and Bladder Cancer: A Case–Control Study. Int Urol Nephrol 2005; 37:283-9. [PMID: 16142557 DOI: 10.1007/s11255-004-4710-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2004] [Accepted: 10/13/2004] [Indexed: 10/25/2022]
Abstract
To investigate possible relationships between diet and risk for bladder cancer in Serbia, the hospital-based case-control study was carried out. This study included 130 newly diagnosed bladder cancer patients and the same number of controls matched by sex, age (%+/-%2 years) and type of residence (rural or urban). Dietary information was obtained by using a food frequency questionnaire. Initial case-control comparisons were based on tertiles of average daily intake of control group. The odds ratios (ORs) were computed for each tertile, with the lowest tertile defined as the referent category. All variables (food items) significantly related to bladder cancer were included in multivariable logistic regression analysis. According to this analysis, risk factors for bladder cancer appeared to be consumption of liver (OR=6.60, 95%CI=1.89-23.03), eggs (OR=3.12, 95%CI=1.10-8.80), pork (OR=2.99, 95%CI=1.16-7.72), and pickled vegetable (OR=3.25, 95%CI=1.36-7.71). A protective effect was found for dietary intake of kale (OR=0.21, 95%CI=0.06-0.73), cereals (OR=0.19, 95%CI=0.06-0.62), tangerines (OR=0.21, 95%CI=0.07-0.68), cabbage (OR=0.27, 95% CI=0.11-0.68), and carrots (OR=0.15, 95%CI=0.05-0.41). The study indicated a potentially important role for dietary fat and pickled vegetables in bladder carcinogenesis. An inverse association was recorded between consumption of fruits, vegetables and cereals, and the development of bladder cancer.
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Affiliation(s)
- V Radosavljević
- Institute of Preventive Medicine, Zemun-Belgrade, Serbia and Montenegro.
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Sakauchi F, Mori M, Washio M, Watanabe Y, Ozasa K, Hayashi K, Miki T, Nakao M, Mikami K, Ito Y, Wakai K, Tamakoshi A. Dietary habits and risk of urothelial cancer death in a large-scale cohort study (JACC Study) in Japan. Nutr Cancer 2005; 50:33-9. [PMID: 15572295 DOI: 10.1207/s15327914nc5001_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
In the present study, the associations of dietary habits with the risk of urothelial cancer death were evaluated taking into consideration sex, age, and smoking habits. The Japan Collaborative Cohort Study was established in 1988-1990 and consisted of 47,997 men and 66,520 women observed until the end of 1999. A self-administered food-frequency questionnaire was used as a baseline survey. Hazard ratios for dietary factors were calculated by Cox's proportional hazards model. During the observation period, 63 men and 25 women died of urothelial cancer. Increasing age, male gender, and history of smoking were all significantly associated with increased risk of urothelial cancer death. A high intake of milk and fruits other than oranges reduced the risk significantly and dose dependently, in particular among subjects with smoking history. However, consumption of butter and yogurt had no associations with the risk. Intakes of cabbage, lettuce, green leafy vegetables, carrots, squash, tomatoes, and oranges were not significantly associated with the risk. It was suggested that urothelial cancer death could be potentially preventable by smoking cessation and regular intake of milk and fruit.
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Affiliation(s)
- Fumio Sakauchi
- Department of Public Health, Sapporo Medical University School of Medicine, Japan.
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Weil MJ, Zhang Y, Nair MG. Tumor cell proliferation and cyclooxygenase inhibitory constituents in horseradish (Armoracia rusticana) and Wasabi (Wasabia japonica). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:1440-1444. [PMID: 15740020 DOI: 10.1021/jf048264i] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cyclooxygenase and human tumor cell growth inhibitory extracts of horseradish (Armoracia rusticana) and wasabi (Wasabia japonica) rhizomes upon purification yielded active compounds 1-3 from horseradish and 4 and 5 from wasabi rhizomes. Spectroscopic analyses confirmed the identities of these active compounds as plastoquinone-9 (1), 6-O-acyl-beta-d-glucosyl-beta-sitosterol (2), 1,2-dilinolenoyl-3-galactosylglycerol (3), linolenoyloleoyl-3-beta-galactosylglycerol (4), and 1,2-dipalmitoyl-3-beta-galactosylglycerol (5). 3-Acyl-sitosterols, sinigrin, gluconasturtiin, and phosphatidylcholines isolated from horseradish and alpha-tocopherol and ubiquinone-10 from wasabi rhizomes isolated were inactive in our assays. At a concentration of 60 microg/mL, compounds 1 and 2 selectively inhibited COX-1 enzyme by 28 and 32%, respectively. Compounds 3, 4, and 5 gave 75, 42, and 47% inhibition of COX-1 enzyme, respectively, at a concentration of 250 microg/mL. In a dose response study, compound 3 inhibited the proliferation of colon cancer cells (HCT-116) by 21.9, 42.9, 51.2, and 68.4% and lung cancer cells (NCI-H460) by 30, 39, 44, and 71% at concentrations of 7.5, 15, 30, and 60 microg/mL, respectively. At a concentration of 60 microg/mL, compound 4 inhibited the growth of colon, lung, and stomach cancer cells by 28, 17, and 44%, respectively. This is the first report of the COX-1 enzyme and cancer cell growth inhibitory monogalactosyl diacylglycerides from wasabi and horseradish rhizomes.
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Affiliation(s)
- Marvin J Weil
- Bioactive Natural Products and Phytoceuticals, Department of Horticulture and National Food Safety and Toxicology Center, Michigan State University, East Lansing, Michigan 48824, USA
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Tsukino H, Nakao H, Kuroda Y, Imai H, Inatomi H, Osada Y, Katoh T. Glutathione S-transferase (GST) M1, T1 and N-acetyltransferase 2 (NAT2) polymorphisms and urothelial cancer risk with tobacco smoking. Eur J Cancer Prev 2005; 13:509-14. [PMID: 15548945 DOI: 10.1097/00008469-200412000-00008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The objective of this study was to examine the association between the genetic polymorphism of glutathione S-transferase (GST) M1, T1 and N-acetyltransferase 2 (NAT2) genes and urothelial cancer risk in relation to smoking status. In this study, 325 Japanese patients with urothelial transitional cell carcinoma and 325 healthy controls were compared for frequencies of GSTM1, T1 and NAT2 genotypes. The frequencies of GSTM1 null genotype and NAT2 slow genotype were significantly higher in the cases than in the controls (adjusted odds ratio (OR) 1.37, 95% confidence interval (CI) 1.01-1.87, adjusted OR 3.09, 95% CI 1.69-5.63, individually). Furthermore, the risk of GSTM1 null genotype and NAT2 slow genotype was higher among smokers (adjusted OR 1.48, 95% CI 1.01-2.15, adjusted OR 4.28, 95% CI 1.96-9.36, individually). The regression analysis of cancer risk as a function of the amount of smoking showed that the susceptibility of people who had GSTM1 null genotype increased from 45 pack-years, while the susceptibility of people with NAT2 intermediate or slow genotype increased rapidly from 25 pack-years, compared with non-smokers. A multiplicative interaction between NAT2 intermediate or slow genotype and pack-years of smoking was found (P<0.001), but GSTM1 null genotype was not (P=0.06). Our results indicate that the GSTM1 null genotype and NAT2 intermediate or slow genotype are associated with an increased risk of urothelial cancer in relation to smoking amounts. Furthermore, the interaction between NAT2 intermediate or slow genotype and pack-years of smoking has a strong impact on urothelial cancer.
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Affiliation(s)
- H Tsukino
- Department of Public Health, Miyazaki Medical College, University of Miyazaki, 5200 Kihara, Miyazaki 889-1692, Japan
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Radosavljević V, Ilić M, Janković S, Djokić M. Diet in bladder cancer ethiopathogenesis. ACTA ACUST UNITED AC 2005; 52:77-82. [PMID: 16812999 DOI: 10.2298/aci0503077r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this paper is to show influence of different foods on bladder cancer appearance, as well as possible consequent ways of prevention. Consumption of food rich in animal fat and cholesterol, fried foods, especially several times used cookin oil for frying, processed meat with additives (nitrates, nitrites, azo-colourrs) can influence bladder cancer occurrence. Regularly, continuous consumption of fermented milk products, which contains come types of milky - acids bacterias, is considered as protective factor in developing bladder cancer. Reports that fruit and vegetable are protective food items are pretty consistent. Data about mineral intake and bladder cancer are obscure.
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Affiliation(s)
- V Radosavljević
- Zavod za preventivno-medicinsku zastitu, Vojska Srbije i Crne Gore, Beograd
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Cremonezzi DC, Díaz MP, Valentich MA, Eynard AR. Neoplastic and preneoplastic lesions induced by melamine in rat urothelium are modulated by dietary polyunsaturated fatty acids. Food Chem Toxicol 2004; 42:1999-2007. [PMID: 15500936 DOI: 10.1016/j.fct.2004.06.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2004] [Accepted: 06/30/2004] [Indexed: 11/19/2022]
Abstract
The modulatory effects of polyunsaturated fatty acids (PUFA) on urinary tract tumorigenesis of 275 Wistar rats were evaluated by treating animals with the tumorigenic agent melamine. Rats were fed with formulae containing 6% of 4 varieties of fats: fish oil enriched in n-3 PUFA (FO), corn oil enriched in n-6 (CO), olein containing mainly n-9 oleic acid (O), and 98% stearic acid (SA), the latter two being essential (EFA)-deficient inducers. Two commercially fed control groups with (CM) and without (C) melamine were used. Animals were autopsied at 22-25 and at 36-40 weeks. Hepatic fatty acids showed that O and SA groups were EFA-deficient. Simple well differentiated hyperplasias were significantly higher in the FO lot, whereas dysplasia was increased in the CO, O and SA lots. Most of the animals fed for 36-40 weeks with the three latter formulae developed the more severe lesions. Increased urothelial proliferation was more frequent in EFA-deficient rats. The apoptosis/mitosis ratio was higher in O, SA and CO fed animals with respect to FO and chow ones. Results show that dietary PUFA modulate differentially both normal and pre-neoplastic urothelial proliferation induced by melamine. FO, rich in n-3 fatty acids, showed a strong protective effect.
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Affiliation(s)
- D C Cremonezzi
- ARE, Instituto de Biología Celular, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Casilla de Correos 220, Córdoba, Argentina
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Wakai K, Hirose K, Takezaki T, Hamajima N, Ogura Y, Nakamura S, Hayashi N, Tajima K. Foods and beverages in relation to urothelial cancer: case-control study in Japan. Int J Urol 2004; 11:11-9. [PMID: 14678179 DOI: 10.1111/j.1442-2042.2004.00740.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The roles of several foods and beverages in the development of bladder cancer remain unclear. METHODS We undertook a hospital-based case-control study at Aichi Cancer Center Hospital, Japan. Subjects included 124 men and women (bladder cancer cases) with newly diagnosed cancers of the renal pelvis (n = 5), ureter (n = 6) or bladder (n = 113) and 620 age- and sex-matched, cancer-free outpatients (controls) presenting at the hospital in the period from 1994 to 2000. Smoking-adjusted odds ratios (OR) were estimated to assess the strength of associations between self-reported intake of foods or drinks and bladder cancer risk, using conditional logistic models. RESULTS We found a decreased risk in relation to frequent intake of green-yellow vegetables; the OR for the highest intake score compared with the lowest was 0.54 (95% confidence interval [CI] 0.29-0.99). The OR for carrot intake of >/=5 times/week compared with </=1-3 times/month was 0.41 (95% CI 0.16-1.01) and a decreasing risk with increasing consumption of green vegetables was also detected (P for trend = 0.063). Inverse associations between black tea, eggs and meat and risk were also suggested, whereas moderate drinkers of green tea (5-9 cups/day) showed an elevated risk. Coffee and milk consumption did not appear to exert any influence. CONCLUSIONS Those with an increased risk of bladder cancer, such as smokers, may benefit from increasing their consumption of green-yellow vegetables.
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Affiliation(s)
- Kenji Wakai
- Department of Preventive Medicine/Biostatistics and Medical Decision Making, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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