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Dai YN, Yi-Wen Yu E, Zeegers MP, Wesselius A. The Association between Dietary Inflammatory Potential and Urologic Cancers: A Meta-analysis. Adv Nutr 2024; 15:100124. [PMID: 37940476 PMCID: PMC10831898 DOI: 10.1016/j.advnut.2023.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 11/10/2023] Open
Abstract
A meta-analysis published in 2018 indicated a significant association between the dietary inflammatory index (DII) and risk of urologic cancers (UC). The number of included studies was limited, and more research has been published on this topic since then. The current study aimed to find a more precise estimate of the association between dietary inflammatory potential and risk of UC by updating the previous meta-analysis. The PubMed and Embase databases were searched between January 2015 and April 2023 to identify eligible articles. Combined relative risk (RR) and 95% confidence intervals (CI) were calculated by random-effects model to assess the association between dietary inflammatory potential and risk of UC by comparison of the highest versus the lowest category of the DII/empirical dietary inflammatory pattern (EDIP) or by using the continuous DII/EDIP score. The analysis, including 23 studies with 557,576 subjects, showed different results for UC. There was a significant association for prostate cancer among case-control studies (RR = 1.75, 95% CI: 1.34-2.28), whereas among cohort studies a null association was found (RR = 1.02, 95% CI: 0.96-1.08). For bladder cancer, a nonsignificant association was observed in both case-control (RR = 1.59, 95% CI: 0.95-2.64) and cohort studies (RR = 1.03, 95% CI: 0.86-1.24). Pooled RR from 3 case-control studies displayed a statistically significant association between the DII and risk of kidney cancer (RR = 1.27, 95% CI: 1.03-1.56). Although DII was positively associated with all types of UC, no association was found for EDIP. The present meta-analysis confirmed that an inflammatory diet has a direct effect on the development of prostate cancer and kidney cancer. Large-scale studies are needed to demonstrate the association between dietary inflammatory potential and risk of UC and provide effective nutritional advice for UC prevention. PROTOCOL REGISTRATION: The protocol was registered in the International Prospective Register of Systematic Reviews (CRD42023391204).
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Affiliation(s)
- Ya-Nan Dai
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Evan Yi-Wen Yu
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, China; Department of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing, China
| | - Maurice P Zeegers
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Anke Wesselius
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.
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2
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Wang A, Wan P, Hebert JR, Le Marchand L, Wilkens LR, Haiman CA. Atopic allergic conditions and prostate cancer risk and survival in the Multiethnic Cohort study. Br J Cancer 2023; 129:974-981. [PMID: 37488447 PMCID: PMC10491765 DOI: 10.1038/s41416-023-02364-1] [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: 02/27/2023] [Revised: 06/20/2023] [Accepted: 07/05/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Previous studies investigating relationship between atopic allergic conditions (AACs)-a highly reactive immune state-and prostate cancer (PCa) risk were inconclusive, and few have studied diverse racial/ethnic populations. METHODS We analysed 74,714 men aged ≥45 years at enrollment in Multiethnic Cohort study. Using multivariable Cox regression, we estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for self-reported AAC status on PCa outcomes. RESULTS Through 2017, 8697 incident PCa and 1170 related deaths occurred. Twenty-one percent of men reported a history of AACs. AACs were not associated with incident PCa (HR = 0.98, 95% CI: 0.93-1.03) but were significantly inversely associated with PCa mortality (HR = 0.79, 95% CI: 0.67-0.92). This inverse association was consistently observed across all racial/ethnic groups (HR range: 0.60-0.90). Among men diagnosed with PCa, AACs were inversely associated with PCa-specific death (HR = 0.75, 95% CI: 0.63-0.89). Adjusting for potential confounding effect of PSA screening did not meaningfully change the results. No significant heterogeneity was observed in the effect of AACs on PCa incidence or mortality by Dietary Inflammatory Index. CONCLUSIONS Hyper-allergic conditions were not associated with PCa incidence but were inversely associated with PCa mortality, suggesting a potential role in reducing tumour progression. Further aetiological research is warranted to understand underlying mechanisms.
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Affiliation(s)
- Anqi Wang
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, US
| | - Peggy Wan
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, US
| | - James R Hebert
- Cancer Prevention and Control Program, Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, US
| | - Loic Le Marchand
- Epidemiology Program, Cancer Research Center, University of Hawaii, Honolulu, HI, US
| | - Lynne R Wilkens
- Epidemiology Program, Cancer Research Center, University of Hawaii, Honolulu, HI, US
| | - Christopher A Haiman
- Center for Genetic Epidemiology, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, US.
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3
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Weng X, Tan W, Wei B, Yang S, Gu C, Wang S. Interaction between drinking and dietary inflammatory index affects prostate specific antigen: a cross-sectional study. BMC Geriatr 2023; 23:537. [PMID: 37670257 PMCID: PMC10478225 DOI: 10.1186/s12877-023-04151-2] [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: 11/14/2022] [Accepted: 07/04/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND Numerous studies have shown that the dietary inflammatory index (DII) is associated with adverse health effects. However, the relationship between DII and prostate cancer (PCa) remains controversial. Although alcohol is included in DII as a dietary factor, the various adverse health effects of alcohol consumption are not only related to inflammation. On the other hand, it has been a long-standing debate whether alcohol consumption is linked to the risk of PCa. Therefore, to clarify whether drinking affects the relationship between DII and PCa, we evaluated the correlation between DII and prostate-specific antigen (PSA) based on the National Health and Nutrition Examination Survey (NHANES) database. METHODS We used data from the NHANES spanning from 2005 to 2010 to analyze the relationship between PCa and DII. Out of the 31,034 NHANES participants, we enrolled 4,120 individuals in our study, utilizing dietary intake data from a twenty-four-hour period to determine DII scores. Demographic data, physical and laboratory test results were collected to compare between low PSA and high PSA groups, and to calculate the odds ratio between both groups, we employed a logistic regression analysis. RESULTS In this cross-sectional investigation of PCa, drinkers and non-drinkers had different relationships between DII and PSA levels (OR: 1.2, 95% Cl: 1-1.44 vs. OR: 0.98, 95% Cl: 0.9-1.07), and DII and abstaining from alcohol were effective in reducing the incidence of PSA (p-value for significant interaction = 0.037). CONCLUSION The results of our study suggest that drinking may influence the relationship between DII and PSA levels. DII is likely to be a reliable indicator for estimating PSA levels among non-drinkers, who may limit their intake of pro-inflammatory ingredients to lower the incidence and death of PCa.
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Affiliation(s)
- Xiangtao Weng
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Wenyue Tan
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Baian Wei
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shijian Yang
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Chiming Gu
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
| | - Shusheng Wang
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
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4
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de Mello RN, de Gois BP, Kravchychyn ACP, Dâmaso AR, Horst MA, Lima GC, Corgosinho FC. Dietary inflammatory index and its relation to the pathophysiological aspects of obesity: a narrative review. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2023; 67:e000631. [PMID: 37364142 PMCID: PMC10661000 DOI: 10.20945/2359-3997000000631] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/20/2023] [Indexed: 06/28/2023]
Abstract
Obesity, a complex disease that involves energy imbalance and chronic low-grade inflammation, is implicated in the pathogenesis of several chronic non-communicable diseases. As dietary components modulate the human body's inflammatory status, the Dietary Inflammatory Index (DII®), a literature-derived dietary index, was developed in 2009 to characterize the inflammatory potential of a habitual diet. Abundant research has been conducted to investigate the associations between DII and obesity. In this narrative review, we examined the current state of the science regarding the relationships between DII and the inflammatory pathophysiological aspects related to obesity. DII is associated with inflammation in obesity. The most pro-inflammatory diet was directly related to higher levels of pro-inflammatory markers, which included C-reactive protein (CRP), interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α). Therefore, evidence suggests that the use of the DII may be useful for understanding the relationship between diet and the inflammatory process related to obesity.
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Affiliation(s)
- Roseli Neves de Mello
- Universidade Federal de Goiás, Faculdade de Nutrição, Programa de Pós-graduação em Nutrição e Saúde, Goiânia, GO, Brasil
| | - Bárbara Paixão de Gois
- Universidade Federal de Goiás, Faculdade de Nutrição, Programa de Pós-graduação em Nutrição e Saúde, Goiânia, GO, Brasil
| | | | - Ana Raimunda Dâmaso
- Universidade Federal de São Paulo, Escola Paulista de Medicina, Programa de Pós-graduação em Nutrição, São Paulo, SP, Brasil
| | - Maria Aderuza Horst
- Universidade Federal de Goiás, Faculdade de Nutrição, Programa de Pós-graduação em Nutrição e Saúde, Goiânia, GO, Brasil
| | - Glaucia Carielo Lima
- Universidade Federal de Goiás, Faculdade de Nutrição, Programa de Pós-graduação em Nutrição e Saúde, Goiânia, GO, Brasil
| | - Flávia Campos Corgosinho
- Universidade Federal de Goiás, Faculdade de Nutrição, Programa de Pós-graduação em Nutrição e Saúde, Goiânia, GO, Brasil
- Universidade Federal de Goiás, Programa de Pós-graduação e Ciências da Saúde, Goiânia, GO, Brasil,
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5
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Dietary Inflammatory Index, Obesity, and the Incidence of Colorectal Cancer: Findings from a Hospital-Based Case-Control Study in Malaysia. Nutrients 2023; 15:nu15040982. [PMID: 36839339 PMCID: PMC9965675 DOI: 10.3390/nu15040982] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 02/18/2023] Open
Abstract
Obesity-mediated inflammation represents a key connection between the intake of foods with high inflammatory potential and colorectal cancer (CRC) risk. We aimed to explore the association between energy-adjusted dietary inflammatory index (E-DII) in relation to CRC risk in both obese and non-obese subjects. This study included 99 histopathologically confirmed CRC cases, 73 colonic polyps cases, and 141 healthy controls from tertiary medical centres in both urban and suburban areas in Peninsular Malaysia. The subjects were categorised into body mass index (BMI) < 25 kg/m2 and BMI ≥ 25 kg/m2 groups. E-DII scores were computed based on dietary intake assessed using a validated food frequency questionnaire (FFQ). Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs), adjusted for potential cofounders. The mean dietary energy intake and mean BMI values of the subjects tended to increase as the E-DII scores increased (p for trend < 0.001). E-DII was significantly related to CRC risk only in obese subjects (OR = 1.45; 95% CI = 1.30-1.77; p < 0.001 for trend). Stratified analyses of risk factors showed significant associations between E-DII and CRC risk by age group (p for interaction = 0.030), smoking status (p for interaction = 0.043), and anthropometric indices for both males and females (p for interaction < 0.001) in the most pro-inflammatory E-DII quartile vs. the lowest E-DII quartile. Overall, pro-inflammatory diets were associated with an increased incidence of CRC in the Malaysian population, particularly in obese subjects.
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Lozano-Lorca M, Salcedo-Bellido I, Olmedo-Requena R, Castaño-Vinyals G, Amiano P, Shivappa N, Hébert JR, Pérez-Gómez B, Gracia-Lavedan E, Gómez-Acebo I, Molina-Barceló A, Barrios-Rodríguez R, Alguacil J, Fernández-Tardón G, Aragonés N, Dierssen-Sotos T, Romaguera D, Pollán M, Kogevinas M, Jiménez-Moleón JJ. Dietary inflammatory index and prostate cancer risk: MCC-Spain study. Prostate Cancer Prostatic Dis 2022; 25:568-575. [PMID: 35418209 DOI: 10.1038/s41391-022-00532-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/02/2022] [Accepted: 03/24/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND The etiology of prostate cancer (PCa) is not well-known, and the role of diet is not well established. We aimed to evaluate the role of the inflammatory power of the diet, measured by the Dietary Inflammatory Index (DII®), on the risk of PCa. METHODOLOGY A population-based multicase-control (MCC-Spain) study was conducted. Information was collected on sociodemographic characteristics, personal and family antecedents, and lifestyles, including diet from a Food Frequency Questionnaire. The inflammatory potential of the diet was assessed using the energy-adjusted Dietary Inflammatory Index (E-DII) based on 30 parameters (a higher score indicates a higher inflammatory capacity of the diet). Tertiles of E-DII were created using the cut-off points from the control group. The International Society of Urology Pathology (ISUP) was grouped as ISUP 1, ISUP 2, or ISUP 3-5. Unconditional logistic regression models were used to estimate adjusted odds ratios (aOR) and 95% confidence intervals (CI) for the association between E-DII score and PCa risk. RESULTS A total of 928 PCa cases and 1278 population controls were included. Among PCa cases, the mean value of the E-DII score was 0.18 (SD: 1.9) vs. 0.07 (SD: 1.9) in the control group (p = 0.162). Cases with a more pro-inflammatory diet (3rd tertile) had the highest risk of PCa, aORT3vsT1 = 1.30 (95% CI 1.03-1.65) (p-trend = 0.026). When stratifying by ISUP, this risk association was observed only for ISUP 2 and ISUP 3-5, aORT3vsT1 = 1.46 (95% CI 1.02-2.10) and 1.60 (95% CI 1.10-2.34), respectively. CONCLUSION A positive association was observed between consuming a pro-inflammatory diet and PCa in the MCC-Spain population, specifically for an ISUP grade greater or equal than 2.
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Affiliation(s)
- Macarena Lozano-Lorca
- Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - Inmaculada Salcedo-Bellido
- Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain. .,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain. .,Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.
| | - Rocío Olmedo-Requena
- Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain.,Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain
| | - Gemma Castaño-Vinyals
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain.,Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra (UPF), Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Pilar Amiano
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Public Health Division of Gipuzkoa, Donostia-San Sebastian, Spain
| | - Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - James R Hébert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Beatriz Pérez-Gómez
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Department of Epidemiology for Chronic Diseases, National Center of Epidemiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Esther Gracia-Lavedan
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain.,Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Inés Gómez-Acebo
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Department of Preventive Medicine and Public Health, University of Cantabria-IDIVAL, 39011, Santander, Spain
| | | | - Rocío Barrios-Rodríguez
- Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain.,Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain
| | - Juan Alguacil
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Centro de Investigación en Recursos Naturales, Salud y Medio Ambiente (RENSMA), Universidad de Huelva, Huelva, Spain
| | - Guillermo Fernández-Tardón
- Health Research Institute of the Principality of Asturias (ISPA), Oncology Institute, University of Oviedo, Oviedo, Asturias, Spain.,Department of Medicine, University of Oviedo, Oviedo, Spain
| | - Nuria Aragonés
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Epidemiology Section, Division of Public Health, Department of Health, Madrid, Spain
| | - Trinidad Dierssen-Sotos
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Department of Preventive Medicine and Public Health, University of Cantabria-IDIVAL, 39011, Santander, Spain
| | - Dora Romaguera
- Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain.,Instituto de Investigación Sanitaria Illes Balears (IdISBa), Palma de Mallorca, Spain.,Consortium for Biomedical Research in Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Madrid, Spain
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Department of Epidemiology for Chronic Diseases, National Center of Epidemiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Manolis Kogevinas
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.,Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - José-Juan Jiménez-Moleón
- Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain. .,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain. .,Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, Madrid, Spain.
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7
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Garay-Sevilla ME, Gomez-Ojeda A, González I, Luévano-Contreras C, Rojas A. Contribution of RAGE axis activation to the association between metabolic syndrome and cancer. Mol Cell Biochem 2021; 476:1555-1573. [PMID: 33398664 DOI: 10.1007/s11010-020-04022-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/11/2020] [Indexed: 02/07/2023]
Abstract
Far beyond the compelling proofs supporting that the metabolic syndrome represents a risk factor for diabetes and cardiovascular diseases, a growing body of evidence suggests that it is also a risk factor for different types of cancer. However, the involved molecular mechanisms underlying this association are not fully understood, and they have been mainly focused on the individual contributions of each component of the metabolic syndrome such as obesity, hyperglycemia, and high blood pressure to the development of cancer. The Receptor for Advanced Glycation End-products (RAGE) axis activation has emerged as an important contributor to the pathophysiology of many clinical entities, by fueling a chronic inflammatory milieu, and thus supporting an optimal microenvironment to promote tumor growth and progression. In the present review, we intend to highlight that RAGE axis activation is a crosswise element on the potential mechanistic contributions of some relevant components of metabolic syndrome into the association with cancer.
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Affiliation(s)
- Ma Eugenia Garay-Sevilla
- Department of Medical Science, Division of Health Science, University of Guanajuato, Campus León, Guanajuato, Mexico
| | - Armando Gomez-Ojeda
- Department of Medical Science, Division of Health Science, University of Guanajuato, Campus León, Guanajuato, Mexico
| | - Ileana González
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Claudia Luévano-Contreras
- Department of Medical Science, Division of Health Science, University of Guanajuato, Campus León, Guanajuato, Mexico
| | - Armando Rojas
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca, Chile.
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Niclis C, Shivappa N, Hébert JR, Tumas N, Díaz MDP. The Inflammatory Potential of Diet is Associated with Breast Cancer Risk in Urban Argentina: A Multilevel Analysis. Nutr Cancer 2020; 73:1898-1907. [PMID: 32900242 DOI: 10.1080/01635581.2020.1817953] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Dietary patterns have been associated with breast cancer (BC) in Argentina. However, little evidence exists relating the inflammatory potential of diet and BC in Latin American countries and how this may relate to rurality.The aim of the present study was to evaluate the association between the Dietary Inflammatory Index (DII®) and BC considering urbanization contexts in Córdoba, Argentina.A frequency-matched case-control study (317 BC cases, 526 controls) was conducted from 2008 through 2016. DII scores were computed based on dietary intake assessed by a validated food frequency questionnaire. Multi-level logistic regression models were fit to evaluate the association between DII and BC, following adjustment for age, body mass index, age at menarche, number of children, smoking habits, socio-economic status and family history of BC as first-level covariates and urbanization level as the contextual variable.Increasing DII score showed significant positive associations with BC risk (ORtertile3vs.tertile1 1.34; 95%CI 1.05, 1.70). The association was stronger in overweight and obese women (ORtertile3vs.tertile1 1.98; 95%CI 1.86, 2.10). The DII effect on BC was higher with increased urbanization.A pro-inflammatory diet, reflected by higher DII scores, was positively associated with BC, especially in overweight women and with increased urbanization.
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Affiliation(s)
- Camila Niclis
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional de Córdoba, Córdoba, Argentina.,Escuela de Nutrición, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Nitin Shivappa
- Cancer Prevention and Control Program, Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Connecting Health Innovations LLC, Columbia, SC, USA
| | - James R Hébert
- Connecting Health Innovations LLC, Columbia, SC, USA.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA
| | - Natalia Tumas
- Centro de Investigaciones y Estudios sobre Cultura y Sociedad (CIECS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional de Córdoba, Córdoba, Argentina.,Facultad de Ciencias de la Salud, Universidad Católica de Córdoba, Córdoba, Argentina
| | - María Del Pilar Díaz
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional de Córdoba, Córdoba, Argentina.,Escuela de Nutrición, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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9
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Zadka Ł, Grybowski DJ, Dzięgiel P. Modeling of the immune response in the pathogenesis of solid tumors and its prognostic significance. Cell Oncol (Dordr) 2020; 43:539-575. [PMID: 32488850 PMCID: PMC7363737 DOI: 10.1007/s13402-020-00519-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Tumor initiation and subsequent progression are usually long-term processes, spread over time and conditioned by diverse aspects. Many cancers develop on the basis of chronic inflammation; however, despite dozens of years of research, little is known about the factors triggering neoplastic transformation under these conditions. Molecular characterization of both pathogenetic states, i.e., similarities and differences between chronic inflammation and cancer, is also poorly defined. The secretory activity of tumor cells may change the immunophenotype of immune cells and modify the extracellular microenvironment, which allows the bypass of host defense mechanisms and seems to have diagnostic and prognostic value. The phenomenon of immunosuppression is also present during chronic inflammation, and the development of cancer, due to its duration, predisposes patients to the promotion of chronic inflammation. The aim of our work was to discuss the above issues based on the latest scientific insights. A theoretical mechanism of cancer immunosuppression is also proposed. CONCLUSIONS Development of solid tumors may occur both during acute and chronic phases of inflammation. Differences in the regulation of immune responses between precancerous states and the cancers resulting from them emphasize the importance of immunosuppressive factors in oncogenesis. Cancer cells may, through their secretory activity and extracellular transport mechanisms, enhance deterioration of the immune system which, in turn, may have prognostic implications.
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Affiliation(s)
- Łukasz Zadka
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, ul. Chalubinskiego 6a, 50-368, Wroclaw, Poland.
| | - Damian J Grybowski
- Orthopedic Surgery, University of Illinois, 900 S. Ashland Avenue (MC944) Room 3356, Molecular Biology Research Building Chicago, Chicago, IL, 60607, USA
| | - Piotr Dzięgiel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, ul. Chalubinskiego 6a, 50-368, Wroclaw, Poland
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10
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The inflammatory potential of Argentinian diet and oral squamous cell carcinoma. NUTR HOSP 2020; 36:1361-1367. [PMID: 31516012 DOI: 10.20960/nh.02613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Introduction Introduction: the goal of this study was to evaluate whether an association exists between dietary components related to inflammation and oral squamous cell carcinoma (OSCC) in Argentina. Methods: a case-control study was carried out with 3 controls for each case and participants of both genders who were between 24 and 85 years of age, who were recruited at the outpatient clinic, Odontology School, Universidad Nacional de Córdoba, between 2012 and 2015. Dietary information was collected using a semi-quantitative food frequency questionnaire from which energy-adjusted Dietary Inflammatory Index (E-DIITM) scores were computed. Logistic regression models were fit to assess the association between E-DII and OSCC. Results: significantly higher intakes of macronutrients such as fat, protein and cholesterol, and of micronutrients such as iron, riboflavin, monounsaturated, polyunsaturated, omega-6 and omega-3 fatty acids, and vitamin B6 were observed in cases as compared to controls (all p < 0.05). We also observed a significant 69% increase in OSCC for each point on the E-DII scale (OR 1.69, 95% CI [1.18-2.43]) after adjusting for alcohol and tobacco consumption. Conclusion: we found an association between diet-associated inflammation, as represented by the E-DII, and risk of OSCC. Future research should be directed at deepening our understanding of this association in other populations, and should include studies utilizing prospective designs.
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11
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Oliveira TMS, Bressan J, Pimenta AM, Martínez-González MÁ, Shivappa N, Hébert JR, Hermsdorff HHM. Dietary inflammatory index and prevalence of overweight and obesity in Brazilian graduates from the Cohort of Universities of Minas Gerais (CUME project). Nutrition 2019; 71:110635. [PMID: 31881508 DOI: 10.1016/j.nut.2019.110635] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 10/09/2019] [Accepted: 10/16/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the independent association of the dietary inflammatory index (DII®) score with overweight and obesity in Brazilian participants of the Cohort of Universities of Minas Gerais (CUME project). METHODS This was a cross-sectional study consisting of 3,151 graduates and postgraduates (2197 women) with a mean (SD) age of 36.3 y (±9.4 y). Sociodemographic characteristics, lifestyle, and anthropometric data were assessed via online self-reported questionnaire. Additionally, a validated food frequency questionnaire with 144 food items was used to generate energy-adjusted DII (E-DIITM) scores, which evaluated the inflammatory potential of the diet. RESULTS The prevalence of overweight and obesity were 28.2% and 11%, respectively. Participants in the highest E-DII quartile (most proinflammatory diet) were more likely to be smokers/former smokers; sedentary; and consumers of red and ultra-processed meats, fats and oils (excluding olive oil), bottled fruit juices and soft drinks, sugars, sweets, and higher overall caloric intake, compared with the first quartile of E-DII. Both men and women in the fourth E-DII quartile had the highest prevalence of overweight and obesity (prevalence ratio [PR], 1.35; 95% confidence interval [CI], 1.14-1.59 and PR, 1.97; 95% CI, 1.20-3.22, respectively, in men; PR, 1.38; 95% CI, 1.17 to 1.65 and PR, 1.95; 95% CI, 1.31-2.90, respectively, in women). CONCLUSION The most proinflammatory dietary pattern was associated with a higher prevalence of overweight and obesity and other unhealthy lifestyles including being sedentary, smoking, and consuming a obesogenic diet.
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Affiliation(s)
| | - Josefina Bressan
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Adriano Marçal Pimenta
- Department of Maternal and Child Nursing and Public Health, School of Nursing, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Miguel-Ángel Martínez-González
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain; Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA; Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA; Connecting Health Innovations LLC, Columbia, SC, USA
| | - James R Hébert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA; Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA; Connecting Health Innovations LLC, Columbia, SC, USA
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12
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Zhu Y, Li Q, Xu X. Dietary inflammatory index and the risk of prostate cancer: a dose-response meta-analysis. Eur J Clin Nutr 2019; 74:1001-1008. [PMID: 31554922 DOI: 10.1038/s41430-019-0500-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 11/09/2022]
Abstract
Emerging epidemiological studies have assessed the potential relationship between the inflammatory potential of diet measured using the dietary inflammatory index (DII) and the risk of prostate cancer and found inconsistent results. The aim of this study was to systematically evaluate this issue using a meta-analysis approach. A comprehensive literature search of papers published through March 2019 was performed in the PubMed and EMBASE databases. The summary odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using a DerSimonian and Laird random effects model. A categorized analysis and linear and nonlinear dose-response analyses were performed. Ten studies met the inclusion criteria for our meta-analysis. The highest DII score category was associated with a significantly higher risk of prostate cancer than the lowest DII score category (OR = 1.73, 95% CI 1.34-2.23). In the dose-response analysis, the summary OR of prostate cancer for an increment of one unit of the DII was 1.10 (95% CI 1.04-1.17). The sensitivity analysis indicated that exclusion of any single study did not materially alter the pooled risk estimates. Finally, there was no evidence of significant publication bias with Begg's test or with Egger's test. In conclusion, this meta-analysis suggests that an increased DII is related to a higher risk of prostate cancer and that the risk increases by 10.0% per unit of the DII. However, further well-designed prospective trials with larger sample sizes should be performed to validate our preliminary findings.
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Affiliation(s)
- Yi Zhu
- Department of Urology, First Affiliated Hospital, School of Medicine, Zhejiang University, 310003, Hangzhou, China
| | - Qinchen Li
- Department of Urology, First Affiliated Hospital, School of Medicine, Zhejiang University, 310003, Hangzhou, China
| | - Xin Xu
- Department of Urology, First Affiliated Hospital, School of Medicine, Zhejiang University, 310003, Hangzhou, China.
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13
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Phillips CM, Chen LW, Heude B, Bernard JY, Harvey NC, Duijts L, Mensink-Bout SM, Polanska K, Mancano G, Suderman M, Shivappa N, Hébert JR. Dietary Inflammatory Index and Non-Communicable Disease Risk: A Narrative Review. Nutrients 2019; 11:E1873. [PMID: 31408965 PMCID: PMC6722630 DOI: 10.3390/nu11081873] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 12/13/2022] Open
Abstract
There are over 1,000,000 publications on diet and health and over 480,000 references on inflammation in the National Library of Medicine database. In addition, there have now been over 30,000 peer-reviewed articles published on the relationship between diet, inflammation, and health outcomes. Based on this voluminous literature, it is now recognized that low-grade, chronic systemic inflammation is associated with most non-communicable diseases (NCDs), including diabetes, obesity, cardiovascular disease, cancers, respiratory and musculoskeletal disorders, as well as impaired neurodevelopment and adverse mental health outcomes. Dietary components modulate inflammatory status. In recent years, the Dietary Inflammatory Index (DII®), a literature-derived dietary index, was developed to characterize the inflammatory potential of habitual diet. Subsequently, a large and rapidly growing body of research investigating associations between dietary inflammatory potential, determined by the DII, and risk of a wide range of NCDs has emerged. In this narrative review, we examine the current state of the science regarding relationships between the DII and cancer, cardiometabolic, respiratory and musculoskeletal diseases, neurodevelopment, and adverse mental health outcomes. We synthesize the findings from recent studies, discuss potential underlying mechanisms, and look to the future regarding novel applications of the adult and children's DII (C-DII) scores and new avenues of investigation in this field of nutritional research.
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Affiliation(s)
- Catherine M Phillips
- HRB Centre for Diet and Health Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Belfield, Dublin 4, Ireland.
- HRB Centre for Diet and Health Research, School of Public Health, University College Cork, Western Gateway Building, Western Rd, Cork, Co. Cork, Ireland.
| | - Ling-Wei Chen
- HRB Centre for Diet and Health Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Barbara Heude
- Research Team on the Early Life Origins of Health (EAROH), Centre for Research in Epidemiology and Statistics (CRESS), INSERM, Université de Paris, F-94807 Villejuif, France
| | - Jonathan Y Bernard
- Research Team on the Early Life Origins of Health (EAROH), Centre for Research in Epidemiology and Statistics (CRESS), INSERM, Université de Paris, F-94807 Villejuif, France
| | - Nicholas C Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Liesbeth Duijts
- The Generation R Study Group, Erasmus MC, University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
- Department of Pediatrics, Division of Neonatology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
| | - Sara M Mensink-Bout
- The Generation R Study Group, Erasmus MC, University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
| | - Kinga Polanska
- Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, 91-348 Lodz, Poland
| | - Giulia Mancano
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Matthew Suderman
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Nitin Shivappa
- Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - James R Hébert
- Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC 29201, USA
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14
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Vidal AC, Oyekunle T, Howard LE, Shivappa N, De Hoedt A, Figueiredo JC, Taioli E, Fowke JH, Lin PH, Hebert JR, Freedland SJ. Dietary inflammatory index (DII) and risk of prostate cancer in a case-control study among Black and White US Veteran men. Prostate Cancer Prostatic Dis 2019; 22:580-587. [PMID: 30980026 PMCID: PMC6790143 DOI: 10.1038/s41391-019-0143-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/22/2019] [Accepted: 01/28/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND: We hypothesized a pro-inflammatory diet would be associated with higher prostate cancer (PC) risk. METHODS: We prospectively recruited incident PC cases (n=254) and controls (n=328) at the Durham Veteran Affairs, from 2007–2018. From a self-completed 61-item Food Frequency Questionnaire, we calculated dietary inflammatory index (DII®) scores with and without supplements. We examined the association between DII scores with and without supplements and overall PC risk using logistic regression and risk of low-grade PC (grade group 1) and high-grade PC (grade group 2–5) with multinomial logistic regression. RESULTS: Cases were more likely to be Black (58% vs. 42%), had higher PSA (6.4 vs. 0.8 ng/ml), lower BMI (29.1 vs. 30.6 kg/m2) and were older (64 vs. 62 years) versus controls (all p<0.01). Both black controls and cases had higher DII scores with and without supplements, though the DII scores with supplements in controls was not significant. On multivariable analysis, there were no associations between DII with or without supplements and overall PC risk (p-trend=0.14, p-trend=0.09, respectively) or low-grade PC (p-trend=0.72, p-trend=0.47, respectively). Higher DII scores with (p-trend=0.04) and without supplements (p =0.08) were associated with high-grade PC, though the association for DII without supplements was not significant. CONCLUSIONS: A pro-inflammatory diet was more common among Black men and associated with high-grade PC in our case-control study. The degree to which a pro-inflammatory diet contributes to PC race disparities warrants further study. If confirmed, studies should test whether a low inflammatory diet can prevent high-grade PC, particularly among Black men.
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Affiliation(s)
- Adriana C Vidal
- Department of Surgery, Division of Urology, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
| | - Taofik Oyekunle
- Duke Cancer Institute, Durham, NC, USA.,Surgery Section, Durham VA Medical Center, Durham, NC, USA
| | - Lauren E Howard
- Duke Cancer Institute, Durham, NC, USA.,Surgery Section, Durham VA Medical Center, Durham, NC, USA.,Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, USA
| | - Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA
| | | | - Jane C Figueiredo
- Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Emanuela Taioli
- Institute for Translational Epidemiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jay H Fowke
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Pao-Hwa Lin
- Department of Medicine, Division of Nephrology, Duke University Medical Center, Durham, NC, USA
| | - James R Hebert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC, USA
| | - Stephen J Freedland
- Department of Surgery, Division of Urology, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Surgery Section, Durham VA Medical Center, Durham, NC, USA
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15
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Hébert JR, Shivappa N, Wirth MD, Hussey JR, Hurley TG. Perspective: The Dietary Inflammatory Index (DII)-Lessons Learned, Improvements Made, and Future Directions. Adv Nutr 2019; 10:185-195. [PMID: 30615051 PMCID: PMC6416047 DOI: 10.1093/advances/nmy071] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/20/2018] [Accepted: 08/20/2018] [Indexed: 12/22/2022] Open
Abstract
The literature on the role of inflammation in health has grown exponentially over the past several decades. Paralleling this growth has been an equally intense focus on the role of diet in modulating inflammation, with a doubling in the size of the literature approximately every 4 y. The Dietary Inflammatory Index (DII) was developed to provide a quantitative means for assessing the role of diet in relation to health outcomes ranging from blood concentrations of inflammatory cytokines to chronic diseases. Based on literature from a variety of different study designs ranging from cell culture to observational and experimental studies in humans, the DII was designed to be universally applicable across all human studies with adequate dietary assessment. Over the past 4 y, the DII has been used in >200 studies and forms the basis for 12 meta-analyses. In the process of conducting this work, lessons were learned with regard to methodologic issues related to total energy and nutrient intake and energy and nutrient densities. Accordingly, refinements to the original algorithm have been made. In this article we discuss these improvements and observations that we made with regard to misuse and misinterpretation of the DII and provide suggestions for future developments.
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Affiliation(s)
- James R Hébert
- Cancer Prevention and Control Program
- Department of Epidemiology and Biostatistics, Arnold School of Public Health
| | - Nitin Shivappa
- Cancer Prevention and Control Program
- Department of Epidemiology and Biostatistics, Arnold School of Public Health
| | - Michael D Wirth
- Cancer Prevention and Control Program
- Department of Epidemiology and Biostatistics, Arnold School of Public Health
- College of Nursing, University of South Carolina, Columbia, SC
| | - James R Hussey
- Department of Epidemiology and Biostatistics, Arnold School of Public Health
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16
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Lu DL, Ren ZJ, Zhang Q, Ren PW, Yang B, Liu LR, Dong Q. Meta-analysis of the association between the inflammatory potential of diet and urologic cancer risk. PLoS One 2018; 13:e0204845. [PMID: 30273380 PMCID: PMC6166946 DOI: 10.1371/journal.pone.0204845] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 09/14/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The inflammatory potential of diet has been shown to have an association with the risk of several cancer types, but the evidence is inconsistent regarding the related risk of urologic cancer (UC). Therefore, we conducted the present meta-analysis to investigate the association between the inflammatory potential of diet and UC. METHODS PubMed, Embase and Web of Science were searched up to July 31, 2018. Two reviewers independently selected the studies and extracted the data. The pooled risk ratio (RR) and its 95% confidence interval (CI) were calculated using the Stata12.0 software package. RESULTS Nine case-control studies and three cohort studies including 83,197 subjects met the inclusion criteria. The overall meta-analysis results showed that individuals with the highest category of DII (dietary inflammatory index) were associated with an increased risk of prostate cancer (RR = 1.62, 95% CI: 1.30-2.02); subgroup analysis showed consistent results. For kidney and bladder cancer, significant positive associations were found in individuals with the highest category of DII score; however, no significant association was found between DII and the risk of urothelial cell carcinoma (UCC). CONCLUSION Available data suggest that more pro-inflammatory diets are associated with an increased risk of prostate cancer, kidney cancer and bladder cancer. However, further well designed large-scaled cohort studies are warranted to provide more conclusive evidence.
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Affiliation(s)
- Dong-Liang Lu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zheng-Ju Ren
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qin Zhang
- Department of Radiology, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Peng-Wei Ren
- Department of Evidence-Based Medicine and Clinical Epidemiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Bo Yang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Liang-Ren Liu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qiang Dong
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- * E-mail:
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