1
|
Messina MJ, Messina V, Nagata C. Perspective: Observational Studies Involving Low-Soy Intake Populations Have Limited Ability for Providing Insight into the Health Effects of Soybean Isoflavones. Adv Nutr 2024; 15:100210. [PMID: 38484974 PMCID: PMC10992291 DOI: 10.1016/j.advnut.2024.100210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 04/01/2024] Open
Abstract
Isoflavones are naturally occurring plant compounds found in uniquely high amounts in soybeans and foods made from this legume. These soybean constituents have been proposed to exert several health benefits and as such they have been the subject of an enormous amount of research. This research includes randomized controlled trials (RCTs) and epidemiologic investigations. Although statistically significant associations between isoflavone intake and a wide range of health outcomes have been identified in cohorts involving low-isoflavone intake populations, we suggest that these associations are unlikely to have a causal basis because exposure is too low for isoflavones to exert physiologic effects. In cohorts involving predominantly non-Asian, non-vegetarian populations, the highest isoflavone intake category is typically ≤3 mg/d, an amount of isoflavones provided by ∼30 mL (2 tablespoons) of soymilk made from whole soybeans. In comparison, mean isoflavone intake in the upper intake categories in observational studies involving high-isoflavone intake populations is typically ≥50 mg/d. In RCTs, intervention doses of isoflavones typically range between 40 and 100 mg/d. Health professionals advising patients and clients about soy food and isoflavone intake need to be aware of the limitations of epidemiologic research involving low-isoflavone intake populations. Intake recommendations are best based on the results of RCTs using clinically relevant doses of isoflavones and epidemiologic studies involving populations for whom soy foods are a habitual part of the diet.
Collapse
Affiliation(s)
- Mark J Messina
- Soy Nutrition Institute Global, Jefferson City, MO, United States.
| | | | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
2
|
de Araújo Fagundes M, Alves Carnauba R, Fernandes GA, Pimentel de Assumpção P, Curado MP. Polyphenol intake and gastric cancer: A case-control study in the Brazilian Amazon region. Cancer Epidemiol 2024; 88:102518. [PMID: 38171205 DOI: 10.1016/j.canep.2023.102518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND Polyphenol intake has been associated with a decreased risk of some types of cancer, including gastric cancer (GC). However, few studies address this topic in the Latin American population. In the present study, we evaluated the association between polyphenol intake and the risk of GC in the Brazilian Amazon region. METHODS A case-control study was conducted in Belém (Amazon region) from July 2017 to February 2021. A total of 193 GC cases and 194 controls of both sexes, between 18 and 75 years old, were included in the study. Dietary data were collected using a validated food-frequency questionnaire and polyphenol intake identified using the Phenol-Explorer database. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CI), with adjustement for potential confounders. RESULTS Cases and controls had similar total polyphenol intake (356.4 mg/1000 kcal/d and 331.1 mg/1000 kcal/d, respectively; p = 0.086). After adjusting for potential confounders, high consumption of flavan-3-ols (highest vs. lowest tertile: OR 0.41, 95% CI 0.18-0.94) and hydroxybenzoic acids (highest vs. lowest tertile: OR 0.24, 95% CI 0.10-0.56) was associated with a decreased risk of GC. The opposite was true regarding the intake of flavones (OR 2.46, 95% IC 1.17-5.18) and other polyphenols (OR 2.54, 95% IC 1.16-5.54). When stratifying according to anatomical topography, we observed that the intake of total flavonoids, flavan-3-ols, and flavanones reduced the risk of cardia GC while that of hydroxybenzoic acids reduced the risk of non-cardia GC. In addition, the intake of flavones and other polyphenols was associated with an increased risk of non-cardia GC. According to histologic subtypes, hydroxybenzoic acid intake was associated with a reduced risk of intestinal-type GC (OR 0.21, 95% IC 0.07-0.64), while flavone consumption was associated with an increased risk of diffuse-type GC (OR 2.59, 95% IC 1.05-6.42). CONCLUSIONS Our findings suggest that in the Brazilian Amazon region the high intake of flavan-3-ols and hydroxybenzoic acids is associated with a reduced risk of GC, suggesting a potential beneficial role of these compounds against GC.
Collapse
Affiliation(s)
| | - Renata Alves Carnauba
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; Food Research Center, CEPID-FAPESP (Research Innovation and Dissemination Centers, São Paulo Research Foundation), São Paulo 05508-080, Brazil
| | - Gisele Aparecida Fernandes
- Postgraduate Program in Oncology, A.C. Camargo Cancer Center, São Paulo 01509-900, Brazil; Group of Epidemiology and Statistics on Cancer, International Research Center, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil
| | | | - Maria Paula Curado
- Postgraduate Program in Oncology, A.C. Camargo Cancer Center, São Paulo 01509-900, Brazil; Group of Epidemiology and Statistics on Cancer, International Research Center, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil
| |
Collapse
|
3
|
Potential Role of Natural Antioxidant Products in Oncological Diseases. Antioxidants (Basel) 2023; 12:antiox12030704. [PMID: 36978952 PMCID: PMC10045077 DOI: 10.3390/antiox12030704] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/14/2023] Open
Abstract
Nutrition has a significant effect and a crucial role in disease prevention. Low consumption of fruit and vegetables and a sedentary lifestyle are closely related with the onset and development of many types of cancer. Recently, nutraceuticals have gained much attention in cancer research due to their pleiotropic effects and relatively non-toxic behavior. In fact, although in the past there have been conflicting results on the role of some antioxidant compounds as allies against cancer, numerous recent clinical studies highlight the efficacy of dietary phytochemicals in the prevention and treatment of cancer. However, further investigation is necessary to gain a deeper understanding of the potential anticancer capacities of dietary phytochemicals as well as the mechanisms of their action. Therefore, this review examined the current literature on the key properties of the bioactive components present in the diet, such as carotenoids, polyphenols, and antioxidant compounds, as well as their use in cancer therapy. The review focused on potential chemopreventive properties, evaluating their synergistic effects with anticancer drugs and, consequently, the side effects associated with current cancer treatments.
Collapse
|
4
|
Dietary Polyphenol Intake and Gastric Cancer: A Systematic Review and Meta-Analysis. Cancers (Basel) 2022; 14:cancers14235878. [PMID: 36497359 PMCID: PMC9737802 DOI: 10.3390/cancers14235878] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Phenolic compound consumption may have a protective effect against gastric cancer (GC). Most GC studies focus on the flavonoids class, but results are conflicting and knowledge gaps remain for other classes and total polyphenol intake. This study aimed to assess the association between polyphenol intake (total, flavonoids, and other classes) and GC. METHODS In this systematic review and meta-analysis, the PubMed, Embase, Scopus, LILACS, Web of Science, and OpenGrey databases were searched for studies published up to 20 March 2022. Case-control and cohort studies analyzing the association between polyphenol intake and GC were included. For the meta-analysis, pooled summary estimates were calculated using a random-effects model, and the estimates extracted adjusted for most variables. Subgroup analyses were performed for subclass (e.g., flavonoids and other classes), sex, geographical area, study design, anatomical subtype, histological subtype, family history of GC and fruit and/or vegetable intake. The study was registered with PROSPERO (#CRD42022306014). FINDINGS The search identified 2752 records, of which 19 studies published during the period 1999-2021 including a total of 1,197,857 subjects were eligible. Polyphenol consumption reduced GC risk by 29% (RR = 0.71; 95% CI: 0.62-0.81; I2 = 60.5%); while flavonoid intake decreased GC risk by 28% (RR = 0.72; 95% CI: 0.61-0.85; I2 = 64.3%), similar to the reduction fort other classes (RR = 0.65; 95% CI: 0.54-0.79; I2 = 72.0%). Protective effects against GC were observed in both sexes (male, RR = 0.79; 95% CI: 0.67-0.94, I2 = 31.6%; female, RR = 0.65; 95% CI: 0.48-0.87, I2 = 49.7%) and for intestinal subtype (RR = 0.65; 95% CI: 0.52-0.82, I2 = 0.0%). By continent, polyphenol consumption reduced GC risk in both Europe (RR = 0.67; 95% CI: 0.57-0.79, I2 = 44.2%) and Asia (RR = 0.67; 95% CI: 0.51-0.89, I2 = 60.7%). CONCLUSIONS Dietary polyphenol intake decreased GC risk. The reduction was greatest in females. Most previous studies were carried out in Europe and Asia. Further studies investigating polyphenol consumption and GC in Latin American populations are warranted.
Collapse
|
5
|
Wang Y, Guo J, Yu F, Tian Y, Wu Y, Cui L, Liu LE. The association between soy-based food and soy isoflavone intake and the risk of gastric cancer: a systematic review and meta-analysis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:5314-5324. [PMID: 34032287 DOI: 10.1002/jsfa.11334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/14/2021] [Accepted: 06/25/2021] [Indexed: 06/12/2023]
Abstract
Soy contains many bioactive phytochemicals, such as isoflavones, which have the effect of preventing many cancers. Some studies have shown the beneficial effect of soy-based food and isoflavone intake on gastric cancer (GC), while others claimed no effect. Therefore, whether the beneficial effect of soy-based food is related to its fermentation or whether its protective effect comes from isoflavones still remains inconclusive. Our aim was to investigate the relationship between total soybean, fermented soybean, non-fermented soybean and isoflavone intake, and the risk of GC. Ten cohort studies and 21 case-control studies involving 916 354 participants were included. The association between soy-based food and isoflavone intake and the risk of GC was calculated with the pooled relative risks (RRs) for the highest versus lowest intake categories. The results showed that isoflavone intake might be a protective factor to GC, but the result was not statistically significant (RR = 0.92; 95% CI: 0.79-1.07). However, total soybean intake could significantly decrease the risk of GC by 36% (RR = 0.64; 95% CI: 0.51-0.80), which might be credited to non-fermented soybean products (RR = 0.79; 95% CI: 0.71-0.87). In contrast, high intake of fermented soybean products could increase the risk of GC (RR = 1.19; 95% CI: 1.02-1.38). High intake of total soybean and non-fermented soybean products could reduce the risk of GC, and high intake of fermented soybean products could increase the risk, which indicated that the beneficial effect of soy-based food might be related to its non-fermentation. However, high intake of isoflavones may not be associated with the incidence of GC. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Yameng Wang
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
| | - Jiaping Guo
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
| | - Fei Yu
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
| | - Yongmei Tian
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
- Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou City, People's Republic of China
| | - Lingling Cui
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
| | - Li-E Liu
- College of Public Health, Zhengzhou University, Zhengzhou City, People's Republic of China
- Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou City, People's Republic of China
| |
Collapse
|
6
|
Gonzalez de Mejia E, Rebollo-Hernanz M, Aguilera Y, Martín-Cabrejas MA. Role of anthocyanins in oxidative stress and the prevention of cancer in the digestive system. Cancer 2021. [DOI: 10.1016/b978-0-12-819547-5.00024-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
7
|
Polyphenol Intake and Gastric Cancer Risk: Findings from the Stomach Cancer Pooling Project (StoP). Cancers (Basel) 2020; 12:cancers12103064. [PMID: 33092262 PMCID: PMC7588964 DOI: 10.3390/cancers12103064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Gastric cancer (GC) has the fifth highest incidence of any cancer type worldwide and the third highest mortality rate, so its prevention is very important. Among dietary factors, the consumption of fruit and vegetables has been inversely related to GC risk. Phenolic compounds may exert a favorable effect on the risk of several cancer types, including gastric cancer. However, selected polyphenol classes have not been adequately investigated in relation to GC. There is, however, no comprehensive analysis of polyphenols and GC risk methods to date. In order to provide a detailed evaluation of the relationship between dietary intake of polyphenols and GC risk, we analyzed data from the Stomach cancer Pooling (StoP) Project consortium. Abstract Phenolic compounds may exert a favorable effect on the risk of several cancer types, including gastric cancer (GC). However, selected polyphenol classes have not been adequately investigated in relation to GC. The aim of this study is to evaluate the association between the intake of polyphenols in relation to GC risk. We used data from the Stomach cancer Pooling (StoP) Project, including 10 studies from six countries (3471 GC cases and 8344 controls). We carried out an individual participant data pooled analysis using a two-stage approach. The summary odds ratios (ORs) of GC for each compound, and the corresponding 95% confidence intervals (95% CI), were computed by pooling study specific ORs obtained through multivariate logistic regression, using random effect models. Inverse associations with GC emerged for total polyphenols (OR = 0.67, 95% CI = 0.54–0.81, for the highest versus lowest quartile of intake), total flavonoids (OR = 0.73, 95% CI = 0.55–0.90), anthocyanidins (OR = 0.74, 95% CI = 0.56–0.92), flavanols (OR = 0.77, 95% CI = 0.66–0.88), flavanones (OR = 0.57, 95%CI = 0.44–0.69), total phenolic acids (OR = 0.75, 95%CI = 0.55–0.94), and hydroxybenzoic acids (OR = 0.73, 95%CI = 0.57–0.89). Results were consistent across strata of age, sex, social class, and smoking habit. Suggestive inverse associations were also found for flavonols (OR = 0.76, 95%CI = 0.51–1.01) and hydroxycinnamic acids (OR = 0.82, 95%CI = 0.58–1.06). Further investigations from longitudinal data are needed to confirm this association.
Collapse
|
8
|
Majumder D, Nath P, Debnath R, Maiti D. Understanding the complicated relationship between antioxidants and carcinogenesis. J Biochem Mol Toxicol 2020; 35:e22643. [PMID: 32996240 DOI: 10.1002/jbt.22643] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 07/09/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022]
Abstract
Reactive oxygen species (ROS) are generated as by-product of cellular respiration and also due to the exposure of various xenobiotics, whereas mitochondrial electron transport chain is considered as the main source of ROS generation. The sequential addition to molecular oxygen gives rise to various forms of ROS like superoxide anion, peroxide, hydroxyl radical, hydroxyl ion, and so forth. However, the uncontrolled level of ROS generation and accumulation alters the body homeostasis. Excessive generation of ROS leads to oxidative stress and various kinds of diseases including cancer. To counteract ROS, enzymatic and nonenzymatic antioxidants' armory is available in our body. Apart from endogenous antioxidants, we are also consuming various exogenous antioxidants. Antioxidants protect us from ROS-mediated damages and inhibit ROS-induced carcinogenesis. Recent studies have revealed that antioxidants could also act as tumor-promoting agents. Various anticancer drugs are used to kill the cancer cells through the generation of oxidative stress in them, but the cancer cells can counteract the effect with the help of various endogenous as well as exogenous antioxidants. Our review will summarize the multifaceted relationship between antioxidants and carcinogenesis, and it will help to create new directions in antioxidant-based chemotherapy.
Collapse
Affiliation(s)
- Debabrata Majumder
- Department of Human Physiology, Immunology Microbiology Lab, Tripura University, Suryamaninagar, Tripura, India
| | - Priyatosh Nath
- Department of Human Physiology, Immunology Microbiology Lab, Tripura University, Suryamaninagar, Tripura, India
| | - Rahul Debnath
- Department of Human Physiology, Immunology Microbiology Lab, Tripura University, Suryamaninagar, Tripura, India
| | - Debasish Maiti
- Department of Human Physiology, Immunology Microbiology Lab, Tripura University, Suryamaninagar, Tripura, India
| |
Collapse
|
9
|
Yang D, Wang X, Yuan W, Chen Z. Intake of Anthocyanins and Gastric Cancer Risk: A Comprehensive Meta-Analysis on Cohort and Case-Control Studies. J Nutr Sci Vitaminol (Tokyo) 2019; 65:72-81. [PMID: 30814415 DOI: 10.3177/jnsv.65.72] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This meta-analysis aimed to explore the association between anthocyanins intake and the risk of gastric cancer. All the relative articles have been searched in the online databases, including PubMed, EMBASE, Web of Science, and the Cochrane Library until June 11th, 2018. Risk ratios (RRs) or odds ratio (ORs) and their 95% confidence intervals were calculated and pooled through the STATA 12.0. A total of 6 studies were finally selected in the meta-analysis. No significant association was found between total anthocyanins consumption and gastric cancer risk (RR=0.92, 95%CI: 0.81-1.04). Likewise, there was also no significant evidence of the relationship between anthocyanins intake and gastric cancer in tumor site (cardia: RR=0.90, 95%CI: 0.62-1.31; noncardia: RR=0.86, 95%CI: 0.69-1.07) and gender (men: RR=1.02, 95%CI: 0.73-1.40; women: RR=0.80, 95%CI: 0.52-1.23). The dose-response relationship was also not found in this meta-analysis. The Grades of Recommendations Assessment, Development and Evaluation (GRADE) quality in our study was very low. The results of our meta-analysis suggested the intake of anthocyanins had no association with the risk of gastric cancer and further studies are needed.
Collapse
Affiliation(s)
- DeYi Yang
- Department of General Surgery, Xiangya Hospital, Central South University
| | - Xin Wang
- Department of General Surgery, Shijitan Hospital of Capital Medical University
| | - WeiJie Yuan
- Department of General Surgery, Xiangya Hospital, Central South University
| | - ZiHua Chen
- Department of General Surgery, Xiangya Hospital, Central South University
| |
Collapse
|
10
|
De Silva SF, Alcorn J. Flaxseed Lignans as Important Dietary Polyphenols for Cancer Prevention and Treatment: Chemistry, Pharmacokinetics, and Molecular Targets. Pharmaceuticals (Basel) 2019; 12:E68. [PMID: 31060335 PMCID: PMC6630319 DOI: 10.3390/ph12020068] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/26/2019] [Accepted: 04/30/2019] [Indexed: 02/07/2023] Open
Abstract
Cancer causes considerable morbidity and mortality across the world. Socioeconomic, environmental, and lifestyle factors contribute to the increasing cancer prevalence, bespeaking a need for effective prevention and treatment strategies. Phytochemicals like plant polyphenols are generally considered to have anticancer, anti-inflammatory, antiviral, antimicrobial, and immunomodulatory effects, which explain their promotion for human health. The past several decades have contributed to a growing evidence base in the literature that demonstrate ability of polyphenols to modulate multiple targets of carcinogenesis linking models of cancer characteristics (i.e., hallmarks and nutraceutical-based targeting of cancer) via direct or indirect interaction or modulation of cellular and molecular targets. This evidence is particularly relevant for the lignans, an ubiquitous, important class of dietary polyphenols present in high levels in food sources such as flaxseed. Literature evidence on lignans suggests potential benefit in cancer prevention and treatment. This review summarizes the relevant chemical and pharmacokinetic properties of dietary polyphenols and specifically focuses on the biological targets of flaxseed lignans. The consolidation of the considerable body of data on the diverse targets of the lignans will aid continued research into their potential for use in combination with other cancer chemotherapies, utilizing flaxseed lignan-enriched natural products.
Collapse
Affiliation(s)
- S Franklyn De Silva
- Drug Discovery & Development Research Group, College of Pharmacy and Nutrition, 104 Clinic Place, Health Sciences Building, University of Saskatchewan, Saskatoon, Saskatchewan (SK), S7N 2Z4, Canada.
| | - Jane Alcorn
- Drug Discovery & Development Research Group, College of Pharmacy and Nutrition, 104 Clinic Place, Health Sciences Building, University of Saskatchewan, Saskatoon, Saskatchewan (SK), S7N 2Z4, Canada.
| |
Collapse
|
11
|
Vitelli Storelli F, Molina AJ, Zamora-Ros R, Fernández-Villa T, Roussou V, Romaguera D, Aragonés N, Obón-Santacana M, Guevara M, Gómez-Acebo I, Fernández-Tardón G, Molina-Barceló A, Olmedo-Requena R, Capelo R, Chirlaque MD, Pérez-Gómez B, Moreno V, Castilla J, Rubín-García M, Pollán M, Kogevinas M, Lera JPB, Martín V. Flavonoids and the Risk of Gastric Cancer: An Exploratory Case-Control Study in the MCC-Spain Study. Nutrients 2019; 11:nu11050967. [PMID: 31035601 PMCID: PMC6566880 DOI: 10.3390/nu11050967] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/19/2019] [Accepted: 04/24/2019] [Indexed: 12/12/2022] Open
Abstract
Several epidemiological studies have investigated the association between the dietary flavonoid intake and gastric cancer (GC) risk; however, the results remain inconclusive. Investigating the relationship between the different classes of flavonoids and the histological types and origin of GC can be of interest to the research community. We used data from a population-based multi-case control study (MCC-Spain) obtained from 12 different regions of Spain. 2700 controls and 329 GC cases were included in this study. Odds ratios (ORs) were calculated using the mixed effects logistic regression considering quartiles of flavonoid intakes and log2. Flavonoid intake was associated with a lower GC risk (ORlog2 = 0.76; 95% CI = 0.65-0.89; ORq4vsq1 = 0.60; 95%CI = 0.40-0.89; ptrend = 0.007). Inverse and statistically significant associations were observed with anthocyanidins, chalcones, dihydroflavonols and flavan-3-ols. The isoflavanoid intake was positively associated with higher cancer risk, but without reaching a statistical significance. In general, no differences were observed in the GC risk according to the location and histological type. The flavonoid intake seems to be a protective factor against GC within the MCC-study. This effect may vary depending on the flavonoid class but not by the histological type and location of the tumor. Broader studies with larger sample size and greater geographical variability are necessary.
Collapse
Affiliation(s)
- Facundo Vitelli Storelli
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Antonio José Molina
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Raul Zamora-Ros
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat (Barcelona), Spain.
| | - Tania Fernández-Villa
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Vasiliki Roussou
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Dora Romaguera
- Instituto de Investigación Sanitaria Illes Balears (IdISBa), Spain.
- Instituto de Salud Global de Barcelona (ISGlobal), 08003 Barcelona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain.
| | - Nuria Aragonés
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Cancer Epidemiology Section, Public Health Division, Department of Health of Madrid, 28035 Madrid, Spain.
| | - Mireia Obón-Santacana
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology (ICO), L'Hospitalet del Llobregat, 08003 Barcelona, Spain.
- ONCOBELL Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Spain.
| | - Marcela Guevara
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Public Health Institute of Navarra-IDISNA, 31003 Pamplona, Spain.
| | - Inés Gómez-Acebo
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- University of Cantabria⁻IDIVAL, Santander, Spain.
| | - Guillermo Fernández-Tardón
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- University of Cantabria⁻IDIVAL, Santander, Spain.
| | - Ana Molina-Barceló
- Cancer and Public Health Area, FISABIO-Public Health, 46020 Valencia, Spain.
| | - Rocío Olmedo-Requena
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Department of Preventive Medicine and Public Health, University of Granada, 18071 Granada, Spain.
| | - Rocío Capelo
- Centro de Investigación en Recursos Naturales, Salud, y Medio Ambiente (RENSMA), Universidad de Huelva, 21071 Huelva, Spain.
| | - María Dolores Chirlaque
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Department of Epidemiology, Regional Health Council, IMIB-Arrixaca, Murcia University, 30007 Murcia, Spain.
| | - Beatriz Pérez-Gómez
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain.
| | - Victor Moreno
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology (ICO), L'Hospitalet del Llobregat, 08908 Barcelona, Spain.
- ONCOBELL Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, 08908 Barcelona, Spain.
- Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, 08907 Barcelona, Spain.
| | - Jesús Castilla
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Public Health Institute of Navarra-IDISNA, 31003 Pamplona, Spain.
| | - María Rubín-García
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain.
| | - Manolis Kogevinas
- Instituto de Salud Global de Barcelona (ISGlobal), 08003 Barcelona, Spain.
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
- IMIM (Hospital del Mar Medical Research Institute), 08003 Barcelona, Spain.
- Universitat Pompeu Fabra (UPF), Departament de Ciències Experimentals i de la Salut, 08002 Barcelona, Spain.
| | - Juan Pablo Barrio Lera
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
| | - Vicente Martín
- Grupo de Investigación en Interacciones Gen-Ambiente y Salud (GIIGAS)/Instituto de Biomedicina (IBIOMED), Universidad de León, 24071 León, Spain.
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), 28029 Madrid, Spain.
| |
Collapse
|
12
|
Rossi M, Strikoudi P, Spei ME, Parpinel M, Serraino D, Montella M, Libra M, La Vecchia C, Rosato V. Flavonoids and bladder cancer risk. Cancer Causes Control 2019; 30:527-535. [PMID: 30903485 DOI: 10.1007/s10552-019-01158-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Flavonoids have drawn attention because of their antioxidant capacity and anti-carcinogenic effect in various types of cancer. A limited number of studies has investigated their potential effect on the risk of bladder cancer, with inconsistent results. METHODS We analyzed data from an Italian case-control study including 690 incident bladder cancer cases and 665 controls admitted to the same network of hospitals for acute, non-neoplastic, non tobacco-related diseases. Subjects were interviewed using a reproducible and validated food-frequency questionnaire. We applied data on food and beverage composition to estimate the intake of isoflavones, anthocyanidins, flavan-3-ols, flavanones, flavones and flavonols. We estimated odds ratios (ORs) through multiple logistic regression models, including terms for potential confounding factors, including tobacco smoking and total energy intake. RESULTS We found an inverse association between isoflavones (OR for the highest compared to the lowest quintile of intake = 0.56, 95% CI 0.37-0.84) and flavones (OR = 0.64, 95% CI 0.44-0.95) and bladder cancer. Non-significant inverse association was found for flavan-3-ols (OR = 0.70), flavonols (OR = 0.85) and total flavonoids (OR = 0.76). The results were consistent for non-muscle-invasive and muscle-invasive bladder cancers. CONCLUSIONS Our data indicate an inverse association between isoflavones and flavones with respect to bladder cancer risk.
Collapse
Affiliation(s)
- Marta Rossi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via A. Vanzetti 5, 20133, Milan, Italy
| | - Panagiota Strikoudi
- Department of Nutrition and Dietetics, Faculty of Agriculture Technology, Food Technology and Nutrition, Alexander Technological Educational Institution of Thessaloniki, P.C. 57400, Sindos, Thessaloniki, Greece
| | - Maria-Eleni Spei
- Department of Hygiene, Epidemiology, and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 75 M. Asias Street, 115 27, Goudi, Athens, Greece
| | - Maria Parpinel
- Department of Medicine, Università degli Studi di Udine, Via Colugna 50, 33100, Udine, Italy
| | - Diego Serraino
- Cancer Epidemiology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Centro di Riferimento Oncologico, Via F. Gallini 2, 33081, Aviano (PN), Italy
| | - Maurizio Montella
- Unit of Epidemiology, Istituto Nazionale Tumori Fondazione G. Pascale, Via M. Semmola 1, 80131, Napoli, Italy
| | - Massimo Libra
- Section of Oncologic, Clinic and General Pathology, Department of Biomedical & Biotechnological Sciences, Università degli Studi di Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via A. Vanzetti 5, 20133, Milan, Italy
| | - Valentina Rosato
- Unit of Medical Statistics and Biometry, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Via G. Venezian 1, 20133, Milano, Italy.
| |
Collapse
|
13
|
Wang W, Zhan L, Guo D, Xiang Y, Zhang Y, Tian M, Han Z. Transcriptome analysis of pancreatic cancer cell response to treatment with grape seed proanthocyanidins. Oncol Lett 2018; 17:1741-1749. [PMID: 30675233 PMCID: PMC6341838 DOI: 10.3892/ol.2018.9807] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 10/25/2018] [Indexed: 01/09/2023] Open
Abstract
Grape seed proanthocyanidins (GSPs) have been demonstrated to exhibit potential chemotherapeutic efficacy against various cancer types. To determine the underlying molecular mechanisms involved in GSP-induced apoptosis, the present study prepared pancreatic cancer (PC) cells samples, S3, S12 and S24, which were treated with 20 µg/ml GSPs for 3, 12 and 24 h, respectively. Control cell samples, C3, C12 and C24, were also prepared. Using RNA-sequencing, transcriptome comparisons were performed, which identified 966, 3,543 and 4,944 differentially-expressed genes (DEGs) in S3 vs. C3, S12 vs. C12 and S24 vs. C24, respectively. Gene Ontology analysis of the DEGs, revealed that treatment with GSPs is associated with disruption of the cell cycle (CC) in PC cells. Additionally, disruption of transcription, DNA replication and DNA repair were associated with GSP-treatment in PC cells. Network analysis demonstrated that the common DEGs involved in the CC, transcription, DNA replication and DNA repair were integrated, and served essential roles in the control of CC progression in cancer cells. In summary, GSPs may exhibit a potential chemotherapeutic effect on PC cell proliferation.
Collapse
Affiliation(s)
- Weihua Wang
- Department of Food Science, College of Life Sciences, Tarim University, Alar, Xinjiang 843300, P.R. China.,Xinjiang Production and Construction Corps Key Laboratory of Deep Processing of Agricultural Products in South Xinjiang, Alar, Xinjiang 843300, P.R. China
| | - Leilei Zhan
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei 430075, P.R. China
| | - Dongqi Guo
- Department of Food Science, College of Life Sciences, Tarim University, Alar, Xinjiang 843300, P.R. China.,Xinjiang Production and Construction Corps Key Laboratory of Deep Processing of Agricultural Products in South Xinjiang, Alar, Xinjiang 843300, P.R. China
| | - Yanju Xiang
- Department of Food Science, College of Life Sciences, Tarim University, Alar, Xinjiang 843300, P.R. China.,Xinjiang Production and Construction Corps Key Laboratory of Deep Processing of Agricultural Products in South Xinjiang, Alar, Xinjiang 843300, P.R. China
| | - Yu Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei 430075, P.R. China
| | - Muxing Tian
- Department of Food Science, College of Life Sciences, Tarim University, Alar, Xinjiang 843300, P.R. China.,Xinjiang Production and Construction Corps Key Laboratory of Deep Processing of Agricultural Products in South Xinjiang, Alar, Xinjiang 843300, P.R. China
| | - Zhanjiang Han
- Department of Food Science, College of Life Sciences, Tarim University, Alar, Xinjiang 843300, P.R. China.,Xinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Alar, Xinjiang 843300, P.R. China
| |
Collapse
|
14
|
Murphy KJ, Walker KM, Dyer KA, Bryan J. Estimation of daily intake of flavonoids and major food sources in middle-aged Australian men and women. Nutr Res 2018; 61:64-81. [PMID: 30683440 DOI: 10.1016/j.nutres.2018.10.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 08/30/2018] [Accepted: 10/23/2018] [Indexed: 11/28/2022]
Abstract
Flavonoid consumption has reported health benefits such as reducing cardiovascular disease risk factors, improving endothelial function, and delaying age-related cognitive decline. However, there are little dietary intake data for Australians, which limit our ability to make dietary recommendations to increase intakes to a level where health benefits are seen. The aim of this cross-sectional study was to determine the intake of flavonoids, flavonoid classes, and flavonoid subclasses of 1183 Australians aged 39 to 65 years using a validated 215-item food frequency questionnaire. Based on limited global flavonoid intake data, flavanols are the major dietary flavonoid and are found predominantly in tea and cocoa. As Australians are large tea drinkers, we anticipated that flavanols would be the major flavonoid in the Australian diet. The flavonoid content of foods was determined using a combination of the United States Department of Agriculture Databases and the Phenol-Explorer Database. One-way analysis of variance was undertaken to examine differences between flavonoid intake between men and women. Total flavonoid intake was 626 ± 579 mg/d. Men and women consumed 566 ± 559 mg and 660 ± 588 mg of total flavonoids per day, respectively. Thearubigin accounted for 58% of the flavonoid intake. Women consumed more total flavonoids, thearubigins (both P < .01), anthocyanidins (P < .0001), flavan-3-ols, flavones, and flavonols (all P < .05) than men, whereas men consumed more flavanones than women (P = .01). There was no difference between sexes for the consumption of isoflavones. The data indicated that flavan-3-ols, predominantly thearubigin from tea, were the main flavonoid consumed by Australians. This information contributes to population flavonoid intakes, which should be considered when exploring flavonoid and health relationships.
Collapse
Affiliation(s)
- Karen J Murphy
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5000, Australia.
| | - Katie M Walker
- School of Psychology, Social Work and Social Policy, University of South Australian, Adelaide, SA 5000, Australia.
| | - Kathryn A Dyer
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5000, Australia.
| | - Janet Bryan
- School of Psychology, Social Work and Social Policy, University of South Australian, Adelaide, SA 5000, Australia.
| |
Collapse
|
15
|
In vitro evaluation of the anti-digestion and antioxidant effects of grape seed procyanidins according to their degrees of polymerization. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
16
|
You J, Sun Y, Bo Y, Zhu Y, Duan D, Cui H, Lu Q. The association between dietary isoflavones intake and gastric cancer risk: a meta-analysis of epidemiological studies. BMC Public Health 2018; 18:510. [PMID: 29665798 PMCID: PMC5905165 DOI: 10.1186/s12889-018-5424-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 04/10/2018] [Indexed: 12/17/2022] Open
Abstract
Background Isoflavones, a class of phytoestrogenic compounds, are abundant in soybeans. A number of epidemiological studies have investigated the association between dietary isoflavones intake and the risk of gastric cancer. However, the results are inconclusive. Therefore, the meta-analysis was conducted to evaluate the effect of dietary isoflavones intake on the risk of gastric cancer. Methods Relevant studies from May 1992 to May 2017 were identified through searching PubMed and Web of Science. Additional articles were identified from the reference lists of relevant review articles. Pooled risk ratios (RRs) or odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using a fixed-effects model. Funnel plot and Egger’s test were used to evaluate publication bias. Results Seven articles reporting 12 studies were included in the current meta-analysis. We found no significant association between dietary isoflavones intake and gastric cancer risk with the highest versus the lowest categories of dietary isoflavones intake (OR = 0.97, 95% CI = 0.87–1.09, I2 = 27.5%). Subgroup analyses generally yield similar results. Conclusions Higher dietary isoflavones intake is not associated with a decline in the risk of gastric cancer. Electronic supplementary material The online version of this article (10.1186/s12889-018-5424-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Jie You
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yafei Sun
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yacong Bo
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yiwei Zhu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Dandan Duan
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Han Cui
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Quanjun Lu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| |
Collapse
|
17
|
Flavan-3-ols consumption and cancer risk: A meta-analysis of epidemiologic studies. Oncotarget 2018; 7:73573-73592. [PMID: 27634884 PMCID: PMC5342000 DOI: 10.18632/oncotarget.12017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 07/27/2016] [Indexed: 02/05/2023] Open
Abstract
Although numerous in vitro studies and animal model data have suggested that flavan-3-ols, the most common subclass of flavonoids in the diet, may exert protective effects against cancer, epidemiologic studies have reported inconclusive results for the association between flavan-3-ols intake and cancer risk. Therefore, we conducted this meta-analysis of epidemiologic studies to investigate the preventive effects of flavan-3-ols on various types of cancers. A total of 43 epidemiologic studies, consisting of 25 case-control and 18 prospective cohort studies, were included. A significant inverse association was shown between flavan-3-ols intake and the risk of overall cancer (relative risk (RR) 0.935, 95%CI: 0.891-0.981). When cancer types were separately analyzed, a statistically significant protective effect of flavan-3-ols consumption was observed in rectal cancer (RR 0.838, 95%CI: 0.733-0.958), oropharyngeal and laryngeal cancer (RR 0.759, 95%CI: 0.581-0.993), breast (RR 0.885, 95%CI: 0.790-0.991) in case-control studies and stomach cancer in women (RR 0.633, 95%CI: 0.468-0.858). Our analysis indicates the potential benefits of flavan-3-ols in cancer prevention.
Collapse
|
18
|
Zhang L, Carmody RN, Kalariya HM, Duran RM, Moskal K, Poulev A, Kuhn P, Tveter KM, Turnbaugh PJ, Raskin I, Roopchand DE. Grape proanthocyanidin-induced intestinal bloom of Akkermansia muciniphila is dependent on its baseline abundance and precedes activation of host genes related to metabolic health. J Nutr Biochem 2018; 56:142-151. [PMID: 29571008 DOI: 10.1016/j.jnutbio.2018.02.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/24/2018] [Accepted: 02/08/2018] [Indexed: 12/12/2022]
Abstract
We previously showed that C57BL/6J mice fed high-fat diet (HFD) supplemented with 1% grape polyphenols (GP) for 12 weeks developed a bloom of Akkermansia muciniphila with attenuated metabolic syndrome symptoms. Here we investigated early timing of GP-induced effects and the responsible class of grape polyphenols. Mice were fed HFD, low-fat diet (LFD) or formulations supplemented with GP (HFD-GP, LFD-GP) for 14 days. Mice fed HFD-GP, but not LFD-GP, showed improved oral glucose tolerance compared to controls. A. muciniphila bloom occurred earlier in mice fed LFD-GP than HFD-GP; however, timing was dependent on baseline A. muciniphila levels rather than dietary fat. Mice gavaged for 10 days with GP extract (GPE) or grape proanthocyanidins (PACs), each delivering 360 mg PACs/kg body weight, induced a bloom of fecal and cecal A. muciniphila, the rate of which depended on initial A. muciniphila abundance. Grape PACs were sufficient to induce a bloom of A. muciniphila independent of specific intestinal gene expression changes. Gut microbial community analysis and in vitro inhibition of A. muciniphila by GPE or PACs suggest that the A. muciniphila bloom in vivo occurs via indirect mechanisms.
Collapse
Affiliation(s)
- Li Zhang
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Rachel N Carmody
- Harvard University, Department of Human Evolutionary Biology, 11 Divinity Avenue, Cambridge, MA 02138
| | - Hetal M Kalariya
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Rocio M Duran
- Rutgers, The State University of New Jersey, Department of Food Science, Institute for Food Nutrition and Health, Center for Digestive Health, 61 Dudley Road, New Brunswick, NJ 08901, USA
| | - Kristin Moskal
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Alexander Poulev
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Peter Kuhn
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Kevin M Tveter
- Rutgers, The State University of New Jersey, Department of Food Science, Institute for Food Nutrition and Health, Center for Digestive Health, 61 Dudley Road, New Brunswick, NJ 08901, USA
| | - Peter J Turnbaugh
- University of California San Francisco, Department of Microbiology & Immunology, 513 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Ilya Raskin
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, USA
| | - Diana E Roopchand
- Rutgers, The State University of New Jersey, Department of Food Science, Institute for Food Nutrition and Health, Center for Digestive Health, 61 Dudley Road, New Brunswick, NJ 08901, USA.
| |
Collapse
|
19
|
Lipson SM, Karalis G, Karthikeyan L, Ozen FS, Gordon RE, Ponnala S, Bao J, Samarrai W, Wolfe E. Mechanism of Anti-rotavirus Synergistic Activity by Epigallocatechin Gallate and a Proanthocyanidin-Containing Nutraceutical. FOOD AND ENVIRONMENTAL VIROLOGY 2017; 9:434-443. [PMID: 28466464 DOI: 10.1007/s12560-017-9299-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
Epigallocatechin gallate (EGCG) of green tea and the nutraceutical CystiCran®-40 (containing 40% proanthocyanidins) of the cranberry plant have been associated with antiviral activity. The purpose of this work was to determine the mechanism of antiviral synergy between each compound. Coliphage T4II (phage T4) and the rotavirus strain SA-11(RTV) were used as model virus systems. Individual and combined flavonoids structural and molecular weight analyses were performed by NMR and HPCL/MS, respectively. A suboptimal concentration of EGCG or C-40 alone or in combination reduced phage infectivity by ≤10%. Similarly, EGCG (30 µg/ml) and C-40 (25 µg/ml), respectively, reduced RTV titers by 3 and 13%. However, RTV titers were reduced by 32% (p < .05) with both flavonoids used in combination. RTV was not recognized in host cells by electron microscopy 24-h post-inoculation. NMR and HPLC/MS findings revealed significant structural and potential changes in molecular weight of the flavonoids in complex.
Collapse
Affiliation(s)
- S M Lipson
- Department of Biology, Health Promotions, and Health Care Management, St. Francis Colllege, 180 Remsen Street, Brooklyn Heights, NY, 11201, USA.
| | - G Karalis
- Department of Biology, Health Promotions, and Health Care Management, St. Francis Colllege, 180 Remsen Street, Brooklyn Heights, NY, 11201, USA
| | | | - F S Ozen
- Department of Biology, Health Promotions, and Health Care Management, St. Francis Colllege, 180 Remsen Street, Brooklyn Heights, NY, 11201, USA
| | - R E Gordon
- Mount Sinai Medical Center, New York, NY, USA
| | - S Ponnala
- Department of Biology, Health Promotions, and Health Care Management, St. Francis Colllege, 180 Remsen Street, Brooklyn Heights, NY, 11201, USA
| | - J Bao
- Avomeen Analytical Services, Ann Arbor, MI, USA
| | - W Samarrai
- NYC Collleg Technology, CUNY, Brooklyn, NY, USA
| | - E Wolfe
- Department of Biology, Health Promotions, and Health Care Management, St. Francis Colllege, 180 Remsen Street, Brooklyn Heights, NY, 11201, USA
| |
Collapse
|
20
|
Nasri I, Chawech R, Girardi C, Mas E, Ferrand A, Vergnolle N, Fabre N, Mezghani-Jarraya R, Racaud-Sultan C. Anti-inflammatory and anticancer effects of flavonol glycosides from Diplotaxis harra through GSK3β regulation in intestinal cells. PHARMACEUTICAL BIOLOGY 2017; 55:124-131. [PMID: 27925497 PMCID: PMC7011856 DOI: 10.1080/13880209.2016.1230877] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
CONTEXT AND OBJECTIVE Diplotaxis harra (Forssk.) Boiss. (Brassicaceae) is traditionally used as an antidiabetic, anti-inflammatory or anticancer agent. In these pathologies, the glycogen synthase kinase 3 β (GSK3β) is overactivated and represents an interesting therapeutic target. Several flavonoids can inhibit GSK3β and the purpose of this study was to search for the compounds in Diplotaxis harra which are able to modulate GSK3β. MATERIALS AND METHODS Methanol extracts from D. harra flowers were prepared and the bio-guided fractionation of their active compounds was performed using inflammatory [protease-activated receptor 2 (PAR2)-stimulated IEC6 cells] and cancer (human Caco-2 cell line) intestinal cells. 50-100 μg/mL of fractions or compounds purified by HPLC were incubated with cells whose inhibited form of GSK3β (Pser9 GSK3β) and survival were analyzed by Western blot at 1 h and colorimetric assay at 24 h, respectively. LC-UV-MS profiles and MS-MS spectra were used for the characterization of extracts and flavonoids-enriched fractions, and the identification of pure flavonoids was achieved by MS and NMR analysis. RESULTS The methanol extract from D. harra flowers and its flavonoid-enriched fraction inhibit GSK3β in PAR2-stimulated IEC6 cells. GSK3β inhibition by the flavonoid-enriched D. harra fraction was dependent on PKC activation. The flavonoid-enriched D. harra fraction and its purified compound isorhamnetin-3,7-di-O-glucoside induced a 20% decrease of PAR2-stimulated IEC6 and Caco-2 cell survival. Importantly, normal cells (non-stimulated IEC6 cells) were spared by these treatments. CONCLUSION This work indicates that flavonoids from D. harra display cytotoxic activity against inflammatory and cancer intestinal cells which could depend on GSK3β inhibition.
Collapse
Affiliation(s)
- Imen Nasri
- Laboratoire de Chimie des Substances Naturelles, UR11-ES74, Faculté des Sciences de Sfax, Université de Sfax, Sfax, BP, Tunisie
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Rachid Chawech
- Laboratoire de Chimie des Substances Naturelles, UR11-ES74, Faculté des Sciences de Sfax, Université de Sfax, Sfax, BP, Tunisie
- UMR 152 Pharma-Dev, Université de Toulouse, IRD, UPS, France
| | - Cynthia Girardi
- UMR 152 Pharma-Dev, Université de Toulouse, IRD, UPS, France
| | - Emmanuel Mas
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
- Service de Gastroentérologie, Hépatologie et Nutrition, Hôpital des Enfants, Toulouse, France
| | - Audrey Ferrand
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | | | - Nicolas Fabre
- UMR 152 Pharma-Dev, Université de Toulouse, IRD, UPS, France
| | - Raoudha Mezghani-Jarraya
- Laboratoire de Chimie des Substances Naturelles, UR11-ES74, Faculté des Sciences de Sfax, Université de Sfax, Sfax, BP, Tunisie
| | - Claire Racaud-Sultan
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
- CONTACT Claire Racaud-Sultan, MD, PhDIRSD, CHU Purpan, place du Dr Baylac, 31024 Toulouse cedex 3, France
| |
Collapse
|
21
|
Sak K. Intake of Individual Flavonoids and Risk of Carcinogenesis: Overview of Epidemiological Evidence. Nutr Cancer 2017; 69:1119-1150. [PMID: 29083244 DOI: 10.1080/01635581.2017.1367934] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several epidemiological findings have demonstrated that specific flavonoids can be responsible for reduction of the risk of certain cancer types. However, these results are still rather limited, inconclusive and controversial. Therefore, in this comprehensive review article the findings reported to date about the associations between dietary intake of individual flavonoid compounds and cancer incidence are compiled and analyzed. Also, the possible reasons for inconsistencies are brought forth and discussed. As diet is a potentially modifiable factor in our behavioral choices, further large-scale prospective studies with longer follow-up times, different populations, various doses and exposure timing as well as diverse well-controlled confounders are highly needed to confirm or disprove the current epidemiological knowledge about the role of flavonoids on cancer risk. Regarding the promising data to date, more research on bioavailability, metabolism and biological action mechanisms of these plant secondary metabolites is also encouraged.
Collapse
Affiliation(s)
- Katrin Sak
- a NGO Praeventio , Näituse 22-3, Tartu , Estonia
| |
Collapse
|
22
|
Sun L, Subar AF, Bosire C, Dawsey SM, Kahle LL, Zimmerman TP, Abnet CC, Heller R, Graubard BI, Cook MB, Petrick JL. Dietary Flavonoid Intake Reduces the Risk of Head and Neck but Not Esophageal or Gastric Cancer in US Men and Women. J Nutr 2017; 147:1729-1738. [PMID: 28724656 PMCID: PMC5572494 DOI: 10.3945/jn.117.251579] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/02/2017] [Accepted: 06/14/2017] [Indexed: 01/28/2023] Open
Abstract
Background: Flavonoids are bioactive polyphenolic compounds found in fruits, vegetables, and beverages of plant origin. Previous studies have shown that flavonoid intake reduces the risk of certain cancers; however, few studies to date have examined associations of flavonoids with upper gastrointestinal cancers or used prospective cohorts.Objective: Our study examined the association between intake of flavonoids (anthocyanidins, flavan-3-ols, flavanones, flavones, flavonols, and isoflavones) and risk of head and neck, esophageal, and gastric cancers.Methods: The NIH-AARP Diet and Health Study is a prospective cohort study that consists of 469,008 participants. Over a mean 12-y follow-up, 2453 head and neck (including 1078 oral cavity, 424 pharyngeal, and 817 laryngeal), 1165 esophageal (890 adenocarcinoma and 275 squamous cell carcinoma), and 1297 gastric (625 cardia and 672 noncardia) cancer cases were identified. We used Cox proportional hazards regression models to estimate HRs and CIs for the associations between flavonoid intake assessed at study baseline and cancer outcomes. For 56 hypotheses examined, P-trend values were adjusted using the Benjamini-Hochberg (BH) procedure for false discovery rate control.Results: The highest quintile of total flavonoid intake was associated with a 24% lower risk of head and neck cancer (HR: 0.76; 95% CI: 0.66, 0.86; BH-adjusted 95% CI: 0.63, 0.91; P-trend = 0.02) compared with the lowest quintile. Notably, anthocyanidins were associated with a 28% lower risk of head and neck cancer (HR: 0.72; 95% CI: 0.62, 0.82; BH-adjusted 95% CI: 0.59, 0.87; P-trend = 0.0005), and flavanones were associated with a 22% lower risk of head and neck cancer (HR: 0.78; 95% CI: 0.68, 0.89; BH-adjusted 95% CI: 0.64, 0.94; P-trend: 0.02). No associations between flavonoid intake and risk of esophageal or gastric cancers were found.Conclusions: Our results indicate that flavonoid intake is associated with lower head and neck cancer risk. These associations suggest a protective effect of dietary flavonoids on head and neck cancer risk, and thus potential as a risk reduction strategy.
Collapse
Affiliation(s)
- Lucy Sun
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA;,Divisions of Cancer Epidemiology and Genetics and
| | - Amy F Subar
- Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD
| | | | | | | | | | | | - Ruth Heller
- Divisions of Cancer Epidemiology and Genetics and,Department of Statistics and Operations Research, Tel Aviv University, Tel Aviv-Yafo, Israel
| | | | | | | |
Collapse
|
23
|
Amawi H, Ashby CR, Tiwari AK. Cancer chemoprevention through dietary flavonoids: what's limiting? CHINESE JOURNAL OF CANCER 2017. [PMID: 28629389 PMCID: PMC5477375 DOI: 10.1186/s40880-017-0217-4] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Flavonoids are polyphenols that are found in numerous edible plant species. Data obtained from preclinical and clinical studies suggest that specific flavonoids are chemo-preventive and cytotoxic against various cancers via a multitude of mechanisms. However, the clinical use of flavonoids is limited due to challenges associated with their effective use, including (1) the isolation and purification of flavonoids from their natural resources; (2) demonstration of the effects of flavonoids in reducing the risk of certain cancer, in tandem with the cost and time needed for epidemiological studies, and (3) numerous pharmacokinetic challenges (e.g., bioavailability, drug–drug interactions, and metabolic instability). Currently, numerous approaches are being used to surmount some of these challenges, thereby increasing the likelihood of flavonoids being used as chemo-preventive drugs in the clinic. In this review, we summarize the most important challenges and efforts that are being made to surmount these challenges.
Collapse
Affiliation(s)
- Haneen Amawi
- Department of Pharmacology and Systems Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43560, USA
| | - Charles R Ashby
- Pharmaceutical Sciences, College of Pharmacy, St. John's University, Queens, NY, 11432, USA
| | - Amit K Tiwari
- Department of Pharmacology and Systems Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43560, USA. .,Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43614, USA.
| |
Collapse
|
24
|
Plumb J, Pigat S, Bompola F, Cushen M, Pinchen H, Nørby E, Astley S, Lyons J, Kiely M, Finglas P. eBASIS (Bioactive Substances in Food Information Systems) and Bioactive Intakes: Major Updates of the Bioactive Compound Composition and Beneficial Bioeffects Database and the Development of a Probabilistic Model to Assess Intakes in Europe. Nutrients 2017; 9:nu9040320. [PMID: 28333085 PMCID: PMC5409659 DOI: 10.3390/nu9040320] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/09/2017] [Accepted: 03/17/2017] [Indexed: 01/15/2023] Open
Abstract
eBASIS (Bioactive Substances in Food Information Systems), a web-based database that contains compositional and biological effects data for bioactive compounds of plant origin, has been updated with new data on fruits and vegetables, wheat and, due to some evidence of potential beneficial effects, extended to include meat bioactives. eBASIS remains one of only a handful of comprehensive and searchable databases, with up-to-date coherent and validated scientific information on the composition of food bioactives and their putative health benefits. The database has a user-friendly, efficient, and flexible interface facilitating use by both the scientific community and food industry. Overall, eBASIS contains data for 267 foods, covering the composition of 794 bioactive compounds, from 1147 quality-evaluated peer-reviewed publications, together with information from 567 publications describing beneficial bioeffect studies carried out in humans. This paper highlights recent updates and expansion of eBASIS and the newly-developed link to a probabilistic intake model, allowing exposure assessment of dietary bioactive compounds to be estimated and modelled in human populations when used in conjunction with national food consumption data. This new tool could assist small- and medium-sized enterprises (SMEs) in the development of food product health claim dossiers for submission to the European Food Safety Authority (EFSA).
Collapse
Affiliation(s)
- Jenny Plumb
- Institute of Food Research, Norwich NR4 7UA, UK.
| | | | | | - Maeve Cushen
- Creme Global, Grand Canal Quay, Dublin 2, Ireland.
| | | | - Eric Nørby
- Polytec ApS, Niva, 2990 Copenhagen, Denmark.
| | - Siân Astley
- EuroFIR Association Internationale Sans But Lucratif, 40, Rue Washington, 1050 Brussels, Belgium.
| | - Jacqueline Lyons
- School of Food and Nutritional Sciences, University College Cork, T12 Y337 Cork, Ireland.
| | - Mairead Kiely
- School of Food and Nutritional Sciences, University College Cork, T12 Y337 Cork, Ireland.
| | - Paul Finglas
- Institute of Food Research, Norwich NR4 7UA, UK.
| |
Collapse
|
25
|
Shivappa N, Hébert JR, Ferraroni M, La Vecchia C, Rossi M. Association between Dietary Inflammatory Index and Gastric Cancer Risk in an Italian Case-Control Study. Nutr Cancer 2016; 68:1262-1268. [PMID: 27636679 PMCID: PMC5154551 DOI: 10.1080/01635581.2016.1224367] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND In this study, we explored the association between the dietary inflammatory index (DII) and gastric cancer risk in an Italian case-control study. MATERIALS AND METHODS Cases were 230 patients with incident, histologically confirmed cases of gastric cancer from the Greater Milan area, Northern Italy. Controls were 547 frequency-matched subjects admitted to the same network of hospitals as cases for a wide spectrum of acute, non-neoplastic conditions. The DII was computed using a reproducible and valid 78-item food frequency questionnaire. Odds ratios (ORs) were estimated through logistic regression models conditioned on age and sex and adjusted for recognized confounding factors, including total energy intake. RESULTS Subjects with the most pro-inflammatory diet had a higher risk of gastric cancer compared to subjects with the most anti-inflammatory diet (ORQuartile4vs1 = 2.35, 95% confidence interval, 1.32, 4.20; P-trend = 0.004). CONCLUSION These results indicate that a pro-inflammatory diet, as indicated by higher DII score, was associated with increased risk of gastric cancer.
Collapse
Affiliation(s)
- Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, USA
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC, 29229, USA
| | - James R. Hébert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, USA
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC, 29229, USA
- Department of Family and Preventive Medicine, University of South Carolina School of Medicine, Columbia, South Carolina, 29208, USA
| | - Monica Ferraroni
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
| | - Marta Rossi
- Department of Clinical Sciences and Community Health. Universitá degli Studi di Milano, Milan, Italy
| |
Collapse
|
26
|
Kristo AS, Klimis-Zacas D, Sikalidis AK. Protective Role of Dietary Berries in Cancer. Antioxidants (Basel) 2016; 5:antiox5040037. [PMID: 27775562 PMCID: PMC5187535 DOI: 10.3390/antiox5040037] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/24/2016] [Accepted: 10/11/2016] [Indexed: 12/25/2022] Open
Abstract
Dietary patterns, including regular consumption of particular foods such as berries as well as bioactive compounds, may confer specific molecular and cellular protection in addition to the overall epidemiologically observed benefits of plant food consumption (lower rates of obesity and chronic disease risk), further enhancing health. Mounting evidence reports a variety of health benefits of berry fruits that are usually attributed to their non-nutritive bioactive compounds, mainly phenolic substances such as flavonoids or anthocyanins. Although it is still unclear which particular constituents are responsible for the extended health benefits, it appears that whole berry consumption generally confers some anti-oxidant and anti-inflammatory protection to humans and animals. With regards to cancer, studies have reported beneficial effects of berries or their constituents including attenuation of inflammation, inhibition of angiogenesis, protection from DNA damage, as well as effects on apoptosis or proliferation rates of malignant cells. Berries extend effects on the proliferation rates of both premalignant and malignant cells. Their effect on premalignant cells is important for their ability to cause premalignant lesions to regress both in animals and in humans. The present review focuses primarily on in vivo and human dietary studies of various berry fruits and discusses whether regular dietary intake of berries can prevent cancer initiation and delay progression in humans or ameliorate patients’ cancer status.
Collapse
Affiliation(s)
- Aleksandra S Kristo
- Department of Nutrition and Dietetics, Istanbul Yeni Yuzyil University, Yilanli Ayasma Caddesi No. 26, Istanbul 34010, Turkey.
| | | | - Angelos K Sikalidis
- Department of Nutrition and Dietetics, Istanbul Yeni Yuzyil University, Yilanli Ayasma Caddesi No. 26, Istanbul 34010, Turkey.
| |
Collapse
|
27
|
Liu-Smith F, Meyskens FL. Molecular mechanisms of flavonoids in melanin synthesis and the potential for the prevention and treatment of melanoma. Mol Nutr Food Res 2016; 60:1264-74. [PMID: 26865001 DOI: 10.1002/mnfr.201500822] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 01/05/2023]
Abstract
Flavonoids are becoming popular nutraceuticals. Different flavonoids show similar or distinct biological effects on different tissues or cell types, which may limit or define their usefulness in cancer prevention and/or treatment application. This review focuses on a few selected flavonoids and discusses their functions in normal and transformed pigment cells, including cyanidin, apigenin, genistein, fisetin, EGCG, luteolin, baicalein, quercetin and kaempferol. Flavonoids exhibit melanogenic or anti-melanogenic effects mainly via transcriptional factor MiTF and/or the melanogenesis enzymes tyrosinase, DCT or TYRP-1. To identify a direct target has been a challenge as most studies were not able to discriminate whether the effect(s) of the flavonoid were from direct targeting or represented indirect effects. Flavonoids exhibit an anti-melanoma effect via inhibiting cell proliferation and invasion and inducing apoptosis. The mechanisms are also multi-fold, via ROS-scavenging, immune-modulation, cell cycle regulation and epigenetic modification including DNA methylation and histone deacetylation. In summary, although many flavonoid compounds are extremely promising nutraceuticals, their detailed molecular mechanism and their multi-target (simultaneously targeting multiple molecules) nature warrant further investigation before advancement to translational studies or clinical trials.
Collapse
Affiliation(s)
- Feng Liu-Smith
- Department of Epidemiology, UC Irvine, Irvine, CA, USA.,Department of Medicine, UC Irvine, Irvine, CA, USA.,Department of Public Health, UC Irvine, Irvine, CA, USA
| | - Frank L Meyskens
- Department of Epidemiology, UC Irvine, Irvine, CA, USA.,Department of Medicine, UC Irvine, Irvine, CA, USA.,Department of Public Health, UC Irvine, Irvine, CA, USA.,Department of Biological Chemistry, UC Irvine, Irvine, CA, USA.,Chao Family Comprehensive Cancer Center, UC Irvine, Irvine, CA, USA
| |
Collapse
|
28
|
Dietary Flavonols Intake and Risk of Esophageal and Gastric Cancer: A Meta-Analysis of Epidemiological Studies. Nutrients 2016; 8:91. [PMID: 26891324 PMCID: PMC4772054 DOI: 10.3390/nu8020091] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 01/10/2016] [Accepted: 02/04/2016] [Indexed: 12/24/2022] Open
Abstract
Background: Esophageal cancer (EC) and gastric cancer (GC) are common cancers and leading causes of cancer deaths worldwide. Many studies have investigated the association between dietary flavonols intake and the risk of EC and GC, but the results are inconsistent. Hence, we conducted a systematic analysis of relevant population-based studies to assess the association and derive a more precise estimation. Methods: The Cochrane, PubMed and Embase databases were searched to identify articles published through January 2016 that met the predetermined inclusion criterion. Twelve studies involving 4593 patients and 519,378 controls were included. Results: The summary odds ratios (ORs) of EC, GC and the two combined were respectively 0.88 (95% CI: 0.73–1.08), 0.80 (95% CI: 0.70–0.91) and 0.83 (95% CI: 0.74–0.92) for the highest category of dietary flavonols intake compared with the lowest. No significant heterogeneities were observed in these studies. Further analysis showed that the pooled ORs of EC and GC for cohort, population-based case-control and hospital-based case-control studies were 0.90 (95% CI: 0.61–1.34), 0.92 (95% CI: 0.72–1.18), 0.68 (95% CI: 0.38–1.24) and 0.83 (95% CI: 0.65–1.06), 0.84 (95% CI: 0.45–1.59), 0.70 (95% CI: 0.56–0.88). The subgroup analyses revealed a significant association of flavonol intake with a reduced risk of noncardia gastric adenocarcinoma but not gastric cardia adenocarcinoma. Moreover, significant inverse associations of flavonol intake with GC risk were observed in women but not in men, in smokers but not in nonsmokers, in European populations but not in American populations. Similarly, a significant inverse association of flavonols intake with EC risk was also observed in smokers but not in nonsmokers. Conclusion: High intake of dietary flavonols is significantly related to a reduced risk of GC, especially in women and smokers.
Collapse
|
29
|
Abstract
High intakes of fruit and vegetables may reduce the risk of cancer at several sites. Evidence has been derived mainly from case-control studies. We reviewed the relationship between consumption of vegetables and fruit and the risk of several common cancers in a network of Italian and Swiss case-control studies including over 10,000 cases of fourteen different cancers and about 17,000 controls. Data were suggestive of a protective role of vegetable intake on the risk of several common epithelial cancers. OR for the highest compared with the lowest levels of consumption ranged from 0.2 (larynx, oral cavity and pharynx) to 0.9 (prostate). Inverse associations were found for both raw and cooked vegetables, although for upper digestive tract cancers the former were somewhat stronger. Similar inverse associations were found for cruciferous vegetables. Frequent consumption of allium vegetables was also associated with reduced risk of several cancers. Fruit was a favourable correlate of the risk of several cancers, particularly of the upper digestive tract, with associations generally weaker than those reported for vegetables. A reduced risk of cancers of the digestive tract and larynx was found for high consumption of citrus fruit. Suggestive protections against several forms of cancer, mainly digestive tract cancers, were found for high consumption of apples and tomatoes. High intakes of fibres, flavonoids and proanthocyanidins were inversely related to various forms of cancer. In conclusion, data from our series of case-control studies suggested a favourable role of high intakes of fruit and vegetables in the risk of many common cancers, particularly of the digestive tract. This adds evidence to the indication that aspects of the Mediterranean diet may have a favourable impact not only on CVD, but also on several common (epithelial) cancers, particularly of the digestive tract.
Collapse
|
30
|
Praud D, Parpinel M, Serafini M, Bellocco R, Tavani A, Lagiou P, La Vecchia C, Rossi M. Non-enzymatic antioxidant capacity and risk of gastric cancer. Cancer Epidemiol 2015; 39:340-5. [PMID: 25936460 DOI: 10.1016/j.canep.2015.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 04/03/2015] [Accepted: 04/04/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Consumption of fruit and vegetables has been inversely related to gastric cancer. Two studies found that dietary antioxidant capacity has some role in explaining this association. We investigated the overall antioxidant effect from diet on gastric cancer using three measures of non-enzymatic antioxidant capacity (NEAC). METHODS We used data from an Italian case-control study including 230 patients with incident, histologically confirmed gastric cancer, and 547 frequency matched controls admitted to the same hospitals for acute non-neoplastic diseases. A reproducible and valid food frequency questionnaire was used to assess subjects' usual diet. NEAC was measured using Italian food composition tables in terms of Trolox equivalent antioxidant capacity (TEAC), Ferric reducing-antioxidant power (FRAP) and Total radical-trapping antioxidant parameter (TRAP). We estimated the odds ratios (OR) of gastric cancer and the corresponding 95% confidence intervals (CI) using conditional logistic regression models including terms for recognized gastric cancer risk factors and total energy intake. RESULTS NEAC was inversely related with gastric cancer risk with ORs for the highest versus the lowest quintile of 0.54 (95%CI, 0.33-0.88) for TEAC, 0.67 (95%CI, 0.42-1.07) for FRAP and 0.57 (95%CI, 0.36-0.90) for TRAP. CONCLUSIONS A diet rich in antioxidant capacity reduced gastric cancer risk, suggesting a high consumption of fruit and vegetables and a moderate consumption of wine and whole cereals.
Collapse
Affiliation(s)
- Delphine Praud
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, via G. Venezian 1, 20133 Milan, Italy
| | - Maria Parpinel
- Unit of Hygiene and Epidemiology, Department of Biological and Medical Sciences, University of Udine, via Palladio 8, 33100 Udine, Italy
| | - Mauro Serafini
- Functional Food and Metabolic Stress Prevention Laboratory, Research Center on Agriculture, CRA-NUT, via Ardeatina 546, 00178 Rome, Italy
| | - Rino Bellocco
- Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo 1, 20126 Milan, Italy; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Solnavägen 1, 171 77 Solna, Sweden
| | - Alessandra Tavani
- Department of Epidemiology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", via Giuseppe La Masa 19, 20156 Milan, Italy
| | - Pagona Lagiou
- Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA; Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, University of Athens, 75 M Asias Street, Goudi GR-115-27 Athens, Greece
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, via G. Venezian 1, 20133 Milan, Italy
| | - Marta Rossi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, via G. Venezian 1, 20133 Milan, Italy; Department of Epidemiology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", via Giuseppe La Masa 19, 20156 Milan, Italy.
| |
Collapse
|
31
|
Petrick JL, Steck SE, Bradshaw PT, Trivers KF, Abrahamson PE, Engel LS, He K, Chow WH, Mayne ST, Risch HA, Vaughan TL, Gammon MD. Dietary intake of flavonoids and oesophageal and gastric cancer: incidence and survival in the United States of America (USA). Br J Cancer 2015; 112:1291-300. [PMID: 25668011 PMCID: PMC4385952 DOI: 10.1038/bjc.2015.25] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 12/16/2014] [Accepted: 01/08/2015] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Flavonoids, polyphenolic compounds concentrated in fruits and vegetables, have experimentally demonstrated chemopreventive effects against oesophageal and gastric cancer. Few epidemiologic studies have examined flavonoid intake and incidence of these cancers, and none have considered survival. METHODS In this USA multicentre population-based study, case participants (diagnosed during 1993-1995 with oesophageal adenocarcinoma (OEA, n=274), gastric cardia adenocarcinoma (GCA, n=248), oesophageal squamous cell carcinoma (OES, n=191), and other gastric adenocarcinoma (OGA, n=341)) and frequency-matched controls (n=662) were interviewed. Food frequency questionnaire responses were linked with USDA Flavonoid Databases and available literature for six flavonoid classes and lignans. Case participants were followed until 2000 for vital status. Multivariable-adjusted odds ratios (ORs) and hazard ratios (HRs) (95% confidence intervals (CIs)) were estimated, comparing highest with lowest intake quartiles, using polytomous logistic and proportional hazards regressions, respectively. RESULTS Little or no consistent association was found for total flavonoid intake (main population sources: black tea, orange/grapefruit juice, and wine) and incidence or survival for any tumour type. Intake of anthocyanidins, common in wine and fruit juice, was associated with a 57% reduction in the risk of incident OEA (OR=0.43, 95% CI=0.29-0.66) and OES (OR=0.43, 95% CI=0.26-0.70). The ORs for isoflavones, for which coffee was the main source, were increased for all tumours, except OES. Anthocyanidins were associated with decreased risk of mortality for GCA (HR=0.63, 95% CI=0.42-0.95) and modestly for OEA (HR=0.87, 95% CI=0.60-1.26), but CIs were wide. CONCLUSIONS Our findings, if confirmed, suggest that increased dietary anthocyanidin intake may reduce incidence and improve survival for these cancers.
Collapse
Affiliation(s)
- J L Petrick
- Department of Epidemiology, CB 7435, University of North Carolina, Chapel Hill, NC 27599-7435, USA
| | - S E Steck
- Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, SC, USA
| | - P T Bradshaw
- Department of Nutrition, University of North Carolina, Chapel Hill, NC, USA
| | - K F Trivers
- Division of Cancer Prevention and Control, Centers for Disease Control, Atlanta, GA, USA
| | | | - L S Engel
- Department of Epidemiology, CB 7435, University of North Carolina, Chapel Hill, NC 27599-7435, USA
| | - K He
- Department of Epidemiology and Biostatistics, Indiana University, Bloomington, IN, USA
| | - W-H Chow
- Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S T Mayne
- Department of Chronic Disease Epidemiology, Yale School of Public Health and Yale Cancer Center, New Haven, CT, USA
| | - H A Risch
- Department of Chronic Disease Epidemiology, Yale School of Public Health and Yale Cancer Center, New Haven, CT, USA
| | - T L Vaughan
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - M D Gammon
- Department of Epidemiology, CB 7435, University of North Carolina, Chapel Hill, NC 27599-7435, USA
| |
Collapse
|
32
|
Wada K, Tsuji M, Tamura T, Konishi K, Kawachi T, Hori A, Tanabashi S, Matsushita S, Tokimitsu N, Nagata C. Soy isoflavone intake and stomach cancer risk in Japan: From the Takayama study. Int J Cancer 2015; 137:885-92. [DOI: 10.1002/ijc.29437] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 12/02/2014] [Accepted: 12/17/2014] [Indexed: 01/10/2023]
Affiliation(s)
- Keiko Wada
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - Michiko Tsuji
- Department of Food and Nutrition; Japan Women's University; Tokyo Japan
| | - Takashi Tamura
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - Kie Konishi
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - Toshiaki Kawachi
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - Akihiro Hori
- Department of Internal Medicine; Kumiai Kosei Hospital; Gifu Japan
| | - Shinobu Tanabashi
- Department of Internal Medicine; Takayama Red Cross Hospital; Gifu Japan
| | | | - Naoki Tokimitsu
- Department of Internal Medicine; Takayama Red Cross Hospital; Gifu Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| |
Collapse
|
33
|
Dietary flavonoids and gastric cancer risk in a Korean population. Nutrients 2014; 6:4961-73. [PMID: 25389898 PMCID: PMC4245574 DOI: 10.3390/nu6114961] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 10/17/2014] [Accepted: 10/30/2014] [Indexed: 12/17/2022] Open
Abstract
Gastric cancer is the most common cancer among men in Korea, and dietary factors are closely associated with gastric cancer risk. We performed a case-control study using 334 cases and 334 matched controls aged 35–75 years. Significant associations were observed in total dietary flavonoids and their subclasses, with the exception of anthocyanidins and isoflavones (OR (95% CI): 0.49 (0.31–0.76), p trend = 0.007 for total flavonoids). However, these associations were not significant after further adjustment for fruits and vegetable consumption (OR (95% CI): 0.62 (0.36–1.09), p trend = 0.458 for total flavonoids). Total flavonoids and their subclasses, except for isoflavones, were significantly associated with a reduced risk gastric cancer in women (OR (95% CI): 0.33 (0.15–0.73), p trend = 0.001 for total flavonoids) but not in men (OR (95% CI): 0.70 (0.39–1.24), p trend = 0.393 for total flavonoids). A significant inverse association with gastric cancer risk was observed in flavones, even after additional adjustment for fruits and vegetable consumption in women. No significantly different effects of flavonoids were observed between H. pylori-positive and negative subjects. In conclusion, dietary flavonoids were inversely associated with gastric cancer risk, and these protective effects of dietary flavonoids were prominent in women. No clear differences were observed in the subgroup analysis of H. pylori and smoking status.
Collapse
|
34
|
Wang Y, Gapstur SM, Gaudet MM, Peterson JJ, Dwyer JT, McCullough ML. Evidence for an association of dietary flavonoid intake with breast cancer risk by estrogen receptor status is limited. J Nutr 2014; 144:1603-11. [PMID: 25143370 DOI: 10.3945/jn.114.196964] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Results from preclinical studies suggest that flavonoids, which are ubiquitous in plant-based diets, lower breast cancer risk. Epidemiologic studies of flavonoid intake and breast cancer risk, however, are limited, and few investigated associations with the more aggressive estrogen receptor (ER)-negative (ER-) tumors. OBJECTIVE We examined the associations between 7 subclasses of dietary flavonoids and invasive postmenopausal breast cancer risk overall and by ER status in a U.S. prospective cohort. METHODS In 1999-2000, 56,630 postmenopausal women completed detailed self-administered questionnaires, among whom 2116 invasive breast cancers were verified during a mean follow-up period of 8.5 y. Cox proportional hazards regression was used to calculate multivariable-adjusted HRs and 95% CIs. RESULTS Total flavonoid intake was not associated with breast cancer risk. However, there was a modest inverse association between flavone intake and overall breast cancer risk (fifth vs. first quintile HR: 0.88; 95% CI: 0.76, 1.01; P-trend = 0.04) and between flavan-3-ol intake and risk of ER- breast cancer (for an increment of 40 mg/d; HR: 0.81; 95% CI: 0.67, 0.97) but not for ER-positive (ER+) breast cancer risk. CONCLUSION The inverse association of flavan-3-ol intake with ER- but not ER+ breast cancer is consistent with other studies that suggest a beneficial role of plant-based diets in ER- breast cancer risk.
Collapse
Affiliation(s)
- Ying Wang
- Epidemiology Research Program, American Cancer Society, Atlanta, GA; and
| | - Susan M Gapstur
- Epidemiology Research Program, American Cancer Society, Atlanta, GA; and
| | - Mia M Gaudet
- Epidemiology Research Program, American Cancer Society, Atlanta, GA; and
| | | | - Johanna T Dwyer
- School of Medicine and Jean Mayer USDA Human Nutrition Center on Aging, Tufts University, Boston, MA
| | | |
Collapse
|
35
|
Vuong QV, Hirun S, Chuen TL, Goldsmith CD, Bowyer MC, Chalmers AC, Phillips PA, Scarlett CJ. Physicochemical composition, antioxidant and anti-proliferative capacity of a lilly pilly (Syzygium paniculatum) extract. J Herb Med 2014. [DOI: 10.1016/j.hermed.2014.04.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
36
|
Wang Y, Stevens VL, Shah R, Peterson JJ, Dwyer JT, Gapstur SM, McCullough ML. Dietary flavonoid and proanthocyanidin intakes and prostate cancer risk in a prospective cohort of US men. Am J Epidemiol 2014; 179:974-86. [PMID: 24567173 DOI: 10.1093/aje/kwu006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Higher dietary intakes of flavonoids and proanthocyanidins have been associated with a lower risk of several cancers. Few prospective epidemiologic studies have examined individual flavonoids and proanthocyanidins in relation to prostate cancer. We examined these associations in a prospective US cohort of 43,268 men with a mean age of 70 years who completed detailed self-administered questionnaires in 1999-2000. During a mean follow-up of 7.8 years, 3,974 total prostate cancers, including 567 high-grade cases and 362 advanced cases, were ascertained. Cox proportional hazards regression models were used to calculate multivariable-adjusted relative risks and 95% confidence intervals. Residual energy-adjusted total flavonoids (for fifth quintile vs. first quintile, relative risk = 1.11, 95% confidence interval: 1.01, 1.23; P for trend = 0.02) and several subclasses were positively associated with overall prostate cancer risk, mostly limited to the top quintile and the first 2 years of follow-up. The associations for total flavonoids, flavan-3-ols, and proanthocyanidins with high-grade prostate cancer risk varied by follow-up time. During follow-up from 2002 to 2009, we observed suggestive inverse trends with higher total flavonoids (P for trend = 0.05) and proanthocyanidins (P for trend = 0.04) with high-grade prostate cancer, but not with advanced prostate cancer. Although evidence is limited, a possible role of total flavonoids and proanthocyanidins in prostate cancer tumor progression deserves further study.
Collapse
|
37
|
Cedó L, Castell-Auví A, Pallarès V, Macià A, Blay M, Ardévol A, Motilva MJ, Pinent M. Gallic acid is an active component for the anticarcinogenic action of grape seed procyanidins in pancreatic cancer cells. Nutr Cancer 2013; 66:88-96. [PMID: 24325191 DOI: 10.1080/01635581.2014.851714] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The aim of the present work was to evaluate the effects of a grape seed procyanidin extract (GSPE) on proliferation and apoptosis in the pancreatic adenocarcinoma cell line MIA PaCa-2 and identify the components of the extract with higher activity. The effects of the extract were analyzed on the proliferation and apoptosis processes in MIA PaCa-2 cells, as well as in the levels of the apoptosis markers Bcl-2 and Bax, the mitochondrial membrane potential, and reactive oxygen species levels. Finally, the components of the extract with higher effects were elucidated using enriched fractions of the extract and pure compounds. The results showed that GSPE inhibits cell proliferation and increases apoptosis in MIA PaCa-2 cells, which is primarily mediated by the downregulation of the antiapoptotic protein Bcl-2 and the depolarization of the mitochondrial membrane. GSPE also reduced the formation of reactive oxygen species. The component of the extract that possesses the highest antiproliferative and proapoptotic activity was gallic acid. In conclusion, GSPE acts as anticarcinogenic in MIA PaCa-2 cells, with gallic acid as the major single active constituent of the extract.
Collapse
Affiliation(s)
- Lídia Cedó
- a Nutrigenomics Research Group, Departament de Bioquímica i Biotecnologia , Universitat Rovira i Virgili , Tarragona , Spain
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Woo HD, Kim J. Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis. PLoS One 2013; 8:e75604. [PMID: 24069431 PMCID: PMC3777962 DOI: 10.1371/journal.pone.0075604] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 08/15/2013] [Indexed: 12/11/2022] Open
Abstract
Purpose To systematically investigate the effects of dietary flavonoids and flavonoid subclasses on the risk of smoking-related cancer in observational studies. Methods Summary estimates and corresponding standard errors were calculated using the multivariate-adjusted odds ratio (OR) or relative risk (RR) and 95% CI of selected studies and weighted by the inverse variance. Results A total of 35 studies, including 19 case-controls (9,525 cases and 15,835 controls) and 15 cohort studies (988,082 subjects and 8,161 cases), were retrieved for the meta-analysis. Total dietary flavonoids and most of the flavonoid subclasses were inversely associated with smoking-related cancer risk (OR: 0.82, 95% CI: 0.72-0.93). In subgroup analyses by cancer site, significant associations were observed in aerodigestive tract and lung cancers. Total dietary flavonoid intake was significantly associated with aerodigestive tract cancer risk (OR: 0.67, 95% CI: 0.54-0.83) marginally associated with lung cancer risk (OR: 0.84, 95% CI: 0.71-1.00). Subgroup analyses by smoking status showed significantly different results. The intake of total flavonoids, flavonols, flavones, and flavanones, as well as the flavonols quercetin and kaempferol was significantly associated with decreased risk of smoking-related cancer in smokers, whereas no association was observed in non-smokers, except for flavanones. In meta-analysis for the effect of subclasses of dietary flavonoids by cancer type, aerodigestive tract cancer was inversely associated with most flavonoid subclasses. Conclusion The protective effects of flavonoids on smoking-related cancer risk varied across studies, but the overall results indicated that intake of dietary flavonoids, especially flavonols, was inversely associated with smoking-related cancer risk. The protective effects of flavonoids on smoking-related cancer risk were more prominent in smokers.
Collapse
Affiliation(s)
- Hae Dong Woo
- Molecular Epidemiology Branch, National Cancer Centre, Goyang-si, Korea
| | - Jeongseon Kim
- Molecular Epidemiology Branch, National Cancer Centre, Goyang-si, Korea
- * E-mail:
| |
Collapse
|
39
|
Vogiatzoglou A, Heuer T, Mulligan AA, Lentjes MAH, Luben RN, Kuhnle GGC. Estimated dietary intakes and sources of flavanols in the German population (German National Nutrition Survey II). Eur J Nutr 2013; 53:635-43. [DOI: 10.1007/s00394-013-0572-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/28/2013] [Indexed: 02/05/2023]
|
40
|
Woo HD, Kim J. Dietary flavonoid intake and risk of stomach and colorectal cancer. World J Gastroenterol 2013; 19:1011-1019. [PMID: 23467443 PMCID: PMC3581988 DOI: 10.3748/wjg.v19.i7.1011] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 02/06/2013] [Indexed: 02/06/2023] Open
Abstract
Stomach and colorectal cancers are common cancers and leading causes of cancer deaths. Because the alimentary tract can interact directly with dietary components, stomach and colorectal cancer may be closely related to dietary intake. We systematically searched published literature written in English via PubMed by searching for terms related to stomach and colorectal cancer risk and dietary flavonoids up to June 30, 2012. Twenty-three studies out of 209 identified articles were finally selected for the analysis. Log point effect estimates and the corresponding standard errors were calculated using covariate-adjusted point effect estimates and 95%CIs from the selected studies. Total dietary flavonoid intake was not associated with a reduced risk of colorectal or stomach cancer [odds ratio (OR) (95%CI) = 1.00 (0.90-1.11) and 1.07 (0.70-1.61), respectively]. Among flavonoid subclasses, the intake of flavonols, flavan-3-ols, anthocyanidins, and proanthocyanidins showed a significant inverse association with colorectal cancer risk [OR (95%CI) = 0.71 (0.63-0.81), 0.88 (0.79-0.97), 0.68 (0.56-0.82), and 0.72 (0.61-0.85), respectively]. A significant association was found only between flavonols and stomach cancer risk based on a limited number of selected studies [OR (95%CI) = 0.68 (0.46-0.99)]. In the summary estimates from case-control studies, all flavonoid subclasses except flavones and flavanones were inversely associated with colorectal cancer risk, whereas neither total flavonoids nor any subclasses of flavonoids were associated with colorectal cancer risk in the summary estimates based on the cohort studies. The significant association between flavonoid subclasses and cancer risk might be closely related to bias derived from the case-control design. There was no clear evidence that dietary flavonoids are associated with reduced risk of stomach and colorectal cancer.
Collapse
|
41
|
|
42
|
Romagnolo DF, Selmin OI. Flavonoids and cancer prevention: a review of the evidence. J Nutr Gerontol Geriatr 2012; 31:206-38. [PMID: 22888839 DOI: 10.1080/21551197.2012.702534] [Citation(s) in RCA: 194] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The objective of this work is to review data from epidemiological and preclinical studies addressing the potential benefits of diets based on flavonoids for cancer prevention. Flavonoids are subdivided into subclasses including flavonols, flavones, flavanones, flavan-3-ols, anthocyanidins, and isoflavones. Epidemiological studies suggest dietary intake of flavonoids may reduce the risk of tumors of the breast, colon, lung, prostate, and pancreas. However, some studies have reported inconclusive or even harmful associations. A major challenge in the interpretation of epidemiological studies is that most of the data originate from case-control studies and retrospective acquisition of flavonoid intake. Differences in agricultural, sociodemographics, and lifestyle factors contribute to the heterogeneity in the intake of flavonoids among populations residing in the United States, Europe, and Asia. Dose and timing of exposure may influence the anticancer response to flavonoid-rich diets. A limited number of intervention trials of flavonoids have documented cancer preventative effects. Proposed anticancer mechanisms for flavonoids are inhibition of proliferation, inflammation, invasion, metastasis, and activation of apoptosis. Prospective studies with larger sample sizes are needed to develop biomarkers of flavonoid intake and effect. Mechanistic studies are needed to ascertain how flavonoid-rich diets influence gene regulation for cancer prevention.
Collapse
Affiliation(s)
- Donato F Romagnolo
- Department of Nutritional Sciences and University of Arizona Cancer Center, University of Arizona, Tucson, Arizona 85721-0038, USA.
| | | |
Collapse
|
43
|
Zamora-Ros R, Agudo A, Luján-Barroso L, Romieu I, Ferrari P, Knaze V, Bueno-de-Mesquita HB, Leenders M, Travis RC, Navarro C, Sánchez-Cantalejo E, Slimani N, Scalbert A, Fedirko V, Hjartåker A, Engeset D, Skeie G, Boeing H, Förster J, Li K, Teucher B, Agnoli C, Tumino R, Mattiello A, Saieva C, Johansson I, Stenling R, Redondo ML, Wallström P, Ericson U, Khaw KT, Mulligan AA, Trichopoulou A, Dilis V, Katsoulis M, Peeters PHM, Igali L, Tjønneland A, Halkjær J, Touillaud M, Perquier F, Fagherazzi G, Amiano P, Ardanaz E, Bredsdorff L, Overvad K, Ricceri F, Riboli E, González CA. Dietary flavonoid and lignan intake and gastric adenocarcinoma risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Am J Clin Nutr 2012; 96:1398-408. [PMID: 23076618 DOI: 10.3945/ajcn.112.037358] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Several experimental studies have suggested potential anticarcinogenic effects of flavonoids, although epidemiologic evidence for the impact of dietary flavonoids on risk of gastric cancer (GC) is limited. OBJECTIVE We investigated the association between intake of dietary flavonoids and lignans and incident GC. DESIGN The study followed 477,312 subjects (29.8% men) aged 35-70 y from 10 European countries who participated in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Validated dietary questionnaires and lifestyle information were collected at baseline. A food-composition database on flavonoids and lignans was compiled by using data from USDA and Phenol-Explorer databases. RESULTS During an average follow-up of 11 y, 683 incident GC cases (57.8% men) were mostly validated by a panel of pathologists and used in this analysis. We observed a significant inverse association between total flavonoid intake and GC risk in women (HR: 0.81; 95% CI: 0.70, 0.94; for the continuous variable after log₂ transformation) but not in men (HR: 0.97; 95% CI: 0.85, 1.09). In women, significant inverse associations with GC risk were also observed for intakes of some flavonoid subgroups (anthocyanidins, flavonols, flavones, and flavanols), particularly with intestinal type tumors for total flavonoid and flavanol intakes (P-heterogeneity < 0.1). After stratification by smoking status and sex, there was no significant heterogeneity in these associations between ever- and never-smokers. CONCLUSION Total dietary flavonoid intake is associated with a significant reduction in the risk of GC in women.
Collapse
Affiliation(s)
- Raul Zamora-Ros
- Unit of Nutrition, Environment, and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Barcelona, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Differences in dietary intakes, food sources and determinants of total flavonoids between Mediterranean and non-Mediterranean countries participating in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Br J Nutr 2012; 109:1498-507. [PMID: 22980437 DOI: 10.1017/s0007114512003273] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A greater adherence to the traditional Mediterranean (MED) diet is associated with a reduced risk of developing chronic diseases. This dietary pattern is based on higher consumption of plant products that are rich in flavonoids. We compared the total flavonoid dietary intakes, their food sources and various lifestyle factors between MED and non-MED countries participating in the EPIC study. Flavonoid intakes and their food sources for 35,628 subjects, aged 35-74 years and recruited between 1992 and 2000, in twenty-six study centres were estimated using standardised 24 h dietary recall software (EPIC-Soft®). An ad hoc food composition database on flavonoids was compiled using analytical data from the United States Department of Agriculture and Phenol-Explorer databases. Moreover, it was expanded to include using recipes, estimations of missing values and flavonoid retention factors. No significant differences in total flavonoid mean intake between non-MED countries (373·7 mg/d) and MED countries (370·2 mg/d) were observed. In the non-MED region, the main contributors were proanthocyanidins (48·2%) and flavan-3-ol monomers (24·9%) and the principal food sources were tea (25·7%) and fruits (32·8%). In the MED region, proanthocyanidins (59·0%) were by far the most abundant contributor and fruits (55·1%), wines (16·7%) and tea (6·8%) were the main food sources. The present study shows similar results for total dietary flavonoid intakes, but significant differences in flavonoid class intakes, food sources and some characteristics between MED and non-MED countries. These differences should be considered in studies about the relationships between flavonoid intake and chronic diseases.
Collapse
|
45
|
|
46
|
Deng Y, Xu Z, Liu W, Yang H, Xu B, Wei Y. Effects of lycopene and proanthocyanidins on hepatotoxicity induced by mercuric chloride in rats. Biol Trace Elem Res 2012; 146:213-23. [PMID: 22048885 DOI: 10.1007/s12011-011-9242-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Accepted: 10/18/2011] [Indexed: 02/07/2023]
Abstract
To evaluate the protective potential of lycopene (Lyc) and proanthocyanidins (PCs) against mercuric chloride (HgCl(2))-induced hepatotoxicity, the study focused on the mechanism of oxidative stress. Firstly, the rats were subcutaneously (s.c.) injected with 0, 2.2, 4.4, and 8.8 μmol/kg HgCl(2). Additionally, 40 mg/kg Lyc and 450 mg/kg PCs were given to the rats intragastrically (i.g.) before exposure to 8.8 μmol/kg HgCl(2). Then, body weight, liver weight coefficient, mercury (Hg) contents, histological feature, ultrastructure, apoptosis, reactive oxygen species (ROS), glutathione (GSH), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and malondialdehyde (MDA) in the liver were measured. Lactate dehydrogenase (LDH) and alanine transaminase (ALT) in serum were determined. After exposure to different concentrations of HgCl(2), it was found that Hg contents, pathological and ultrastructure injury, activities of LDH and ALT, apoptosis, and levels of ROS, GSH, and MDA increased and the activities of SOD and GSH-Px decreased in a concentration-dependent manner. Further investigation found that pretreatment with Lyc and PCs inhibited ROS production, protected antioxidant enzymes, and reversed hepatotoxicity. We concluded that Lyc and PCs had hepatoprotective effects on HgCl(2)-induced toxicity by antagonizing oxidative stress in rat liver.
Collapse
Affiliation(s)
- Yu Deng
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, People's Republic of China
| | | | | | | | | | | |
Collapse
|
47
|
Intake estimation of total and individual flavan-3-ols, proanthocyanidins and theaflavins, their food sources and determinants in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Br J Nutr 2011; 108:1095-108. [PMID: 22186699 DOI: 10.1017/s0007114511006386] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Epidemiological studies suggest health-protective effects of flavan-3-ols and their derived compounds on chronic diseases. The present study aimed to estimate dietary flavan-3-ol, proanthocyanidin (PA) and theaflavin intakes, their food sources and potential determinants in the European Prospective Investigation into Cancer and Nutrition (EPIC) calibration cohort. Dietary data were collected using a standardised 24 h dietary recall software administered to 36 037 subjects aged 35-74 years. Dietary data were linked with a flavanoid food composition database compiled from the latest US Department of Agriculture and Phenol-Explorer databases and expanded to include recipes, estimations and retention factors. Total flavan-3-ol intake was the highest in UK Health-conscious men (453·6 mg/d) and women of UK General population (377·6 mg/d), while the intake was the lowest in Greece (men: 160·5 mg/d; women: 124·8 mg/d). Monomer intake was the highest in UK General population (men: 213·5 mg/d; women: 178·6 mg/d) and the lowest in Greece (men: 26·6 mg/d in men; women: 20·7 mg/d). Theaflavin intake was the highest in UK General population (men: 29·3 mg/d; women: 25·3 mg/d) and close to zero in Greece and Spain. PA intake was the highest in Asturias (men: 455·2 mg/d) and San Sebastian (women: 253 mg/d), while being the lowest in Greece (men: 134·6 mg/d; women: 101·0 mg/d). Except for the UK, non-citrus fruits (apples/pears) were the highest contributors to the total flavan-3-ol intake. Tea was the main contributor of total flavan-3-ols in the UK. Flavan-3-ol, PA and theaflavin intakes were significantly different among all assessed groups. This study showed heterogeneity in flavan-3-ol, PA and theaflavin intake throughout the EPIC countries.
Collapse
|
48
|
Rossi M, Lugo A, Lagiou P, Zucchetto A, Polesel J, Serraino D, Negri E, Trichopoulos D, La Vecchia C. Proanthocyanidins and other flavonoids in relation to pancreatic cancer: a case-control study in Italy. Ann Oncol 2011; 23:1488-93. [PMID: 22052986 DOI: 10.1093/annonc/mdr475] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Four cohort studies have examined the relation between flavonoids and pancreatic cancer risk providing inconsistent results. PATIENTS AND METHODS We conducted a case-control study between 1991 and 2008 in Northern Italy. Subjects were 326 cases with incident pancreatic cancer and 652 frequency-matched controls (admitted to the same hospitals as cases for acute non-neoplastic conditions) who answered a reproducible and valid food-frequency questionnaire. We computed odds ratios (ORs) using logistic regression models conditioned on gender, age and study center, and adjusted for education, history of diabetes, tobacco smoking, alcohol drinking and energy intake. RESULTS Proanthocyanidins with three or more mers were inversely related to pancreatic cancer risk. The ORs were similar in all classes of polymers with three or more mers and in their combination (OR for the highest versus the lowest quintile of intake, 0.41; 95% confidence interval 0.24-0.69), and did not substantially change after adjustment for fruit and vegetable consumption, and for vitamin C and folate intakes. Eating an additional portion of fruits rich in proanthocyanidins every day reduced the risk of pancreatic cancer by 25%. CONCLUSION Dietary proanthocyanidins-mostly present in apples, pears and pulses-may convey some protection against pancreatic cancer risk.
Collapse
Affiliation(s)
- M Rossi
- Department of Epidemiology, Mario Negri Institute for Pharmacological Research, Milan, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|