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Zhong J, Li P, Zheng F, Li Y, Lu W, Chen H, Cai J, Xia D, Wu Y. Association between dietary vitamin C intake/blood level and risk of digestive system cancer: a systematic review and meta-analysis of prospective studies. Food Funct 2024; 15:8217-8237. [PMID: 39039956 DOI: 10.1039/d4fo00350k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Experimental studies have shown that vitamin C has anti-cancer effects, but previous meta-analyses have indicated that the role of vitamin C in digestive system cancers (DSCs) is controversial. In this study, a systematic review and meta-analysis of the relationship between dietary intake/plasma concentration of vitamin C and the risk of DSC was conducted, evaluating 32 prospective studies with 1 664 498 participants. Dose-response and subgroup analyses were also performed. Systematic literature searches were performed in PubMed, EMBASE and Web of Science databases until 9th September 2023. Vitamin C intake significantly reduced DSCs risk (RR = 0.88, 95% confidence interval (CI) 0.83 to 0.93). The subgroup analyses showed the risks of oral, pharyngeal, and esophageal (OPE) cancers (0.81, 0.72 to 0.93), gastric cancer (0.81, 0.68 to 0.95), and colorectal cancer (0.89, 0.82 to 0.98) were negatively correlated with vitamin C intake, and the effect of vitamin C was different between colon cancer (0.87, 0.77 to 0.97) and rectal cancer (1.00, 0.84 to 1.19). However, plasma vitamin C concentration was only inversely associated with gastric cancer risk (0.74, 0.59 to 0.92). Dose-response analysis revealed that 250 and 65 mg day-1 vitamin C intakes had the strongest protective effect against OPE and gastric cancers respectively. These estimates suggest that vitamin C intake could significantly reduce gastrointestinal cancer incidence, including OPE, gastric, and colon cancers. Plasma vitamin C has a significant reduction effect on the incidence of gastric cancer only, but additional large-scale clinical studies are needed to determine its impact on the incidence of DSCs.
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Affiliation(s)
- Jiamin Zhong
- Department of Toxicology of School of Public Health and Department of Gynecologic Oncology of Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou, 310009, China
| | - Peiwei Li
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou, 310009, China
| | - Fang Zheng
- Department of Toxicology of School of Public Health and Department of Gynecologic Oncology of Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Yating Li
- Department of Toxicology of School of Public Health and Department of Gynecologic Oncology of Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Wei Lu
- Department of Colorectal Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Hanwen Chen
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou, 310009, China
| | - Jianting Cai
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou, 310009, China
| | - Dajing Xia
- Department of Toxicology of School of Public Health and Department of Gynecologic Oncology of Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Research Unit of Intelligence Classification of Tumour Pathology and Precision Therapy, Chinese Academy of Medical Sciences (2019RU042), Hangzhou 310058, Zhejiang, China
| | - Yihua Wu
- Department of Toxicology of School of Public Health and Department of Gynecologic Oncology of Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang 310058, China
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Wu X, Qin G, Zhang R, Liu Y, Chen L, Su J, Kong C, Fang Z, Wu J. Effect of vegetable consumption on risk of gastric cancer: a systematic review and multi-level meta-analysis of prospective studies. Nutr Res Rev 2024:1-10. [PMID: 38374605 DOI: 10.1017/s0954422424000040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Vegetables are known to be beneficial to human health, but the association between vegetable consumption and gastric cancer remains uncertain. To synthesise knowledge about the relationship between vegetable group consumption and gastric cancer risk, update present meta-analyses and estimate associations between vegetable consumption and gastric cancer risk based solely on prospective studies, we perform a PRISMA-compliant three-level meta-analysis. Systematic search identified thirteen prospective studies with fifty-two effect sizes that met all inclusion criteria and no exclusion criteria for our meta-analysis. Pooled risk ratios (RRs) showed a positive association between high vegetable consumption and low gastric cancer risk (pooled RR 0·93, 95% confidence interval 0·90-0·97, P = 0·06). In moderator analyses for indicators of gender, region and quantity of vegetable intake, there was no significant difference between subgroups. However, the effect became significant in populations with lower than the minimum risk exposure level (TMREL) of vegetable consumption (P < 0·05). Higher vegetable intake is associated with a decreased risk of gastric cancer. This effect may be limited to specific populations, such as ones with lower vegetable consumption. Evidence from our study has important public health implications for dietary recommendations.
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Affiliation(s)
- Xiaomin Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Guoqiang Qin
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Rui Zhang
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yunning Liu
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Liling Chen
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Institute of Chronic Non-Communicable Disease Control and Prevention, Chongqing Center for Disease Control and Prevention, Chongqing, China
| | - Jingyang Su
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Chao Kong
- Institute of Chronic Non-Communicable Disease Control and Prevention, Qufu Center for Disease Control and Prevention, Qufu, Shandong, China
| | - Zhongze Fang
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Jing Wu
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
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Han W, Zhang W, Ren X. Not all carotenoids can reduce the risk of gastric cancer: a systematic review with meta-analysis. BMC Gastroenterol 2024; 24:51. [PMID: 38287248 PMCID: PMC10823639 DOI: 10.1186/s12876-024-03139-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 01/16/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Gastric cancer is characterized by high invasiveness, heterogeneity, and late diagnosis, leading to high incidence and mortality rates. It is a significant public health concern globally. Early prevention is crucial in reducing the occurrence of gastric cancer, and dietary prevention, particularly focusing on carotenoids, has been considered a convenient and effective approach. However, the association between carotenoid intake and gastric cancer incidence remains controversial. METHODS A systematic search was conducted in PubMed, Ovid Embase, Web of Science, and Cochrane databases from inception to January 5, 2023. Two reviewers independently screened search results, extracted relevant data, and evaluated study quality. Statistical analysis was performed using the "metan" command in STATA 16 software. Random-effects or fixed-effects models were chosen based on the magnitude of heterogeneity among studies. RESULTS This study included a total of 35 publications, consisting of 23 case-control studies and 12 cohort studies. Meta-analysis of case-control studies showed that alpha-carotene (OR = 0.71, 95% CI: 0.55-0.92), beta-carotene (OR = 0.62, 95% CI: 0.53-0.72), and lutein (OR = 0.82, 95% CI: 0.69-0.97) significantly reduced the risk of gastric cancer, while beta-cryptoxanthin (OR = 0.88, 95% CI: 0.75-1.04) and lycopene (OR = 0.86, 95% CI: 0.73-1.00) showed no significant correlation. Meta-analysis of cohort studies indicated no significant associations between any of the five carotenoids and gastric cancer incidence (alpha-carotene: RR = 0.81, 95% CI: 0.54-1.23; beta-carotene: RR = 0.86, 95% CI: 0.64-1.16; beta-cryptoxanthin: RR = 0.86, 95% CI: 0.64-1.16; lutein: RR = 0.94, 95% CI: 0.69-1.29; lycopene: RR = 0.89, 95% CI: 0.69-1.14). CONCLUSIONS The relationship between carotenoids and gastric cancer incidence may vary depending on the type of study conducted. Considering that evidence from cohort studies is generally considered stronger than evidence from case-control studies, and high-quality randomized controlled trials show no significant association between carotenoids and gastric cancer incidence, current evidence does not support the supplementation of carotenoids for gastric cancer prevention. Further targeted research is needed to explore the association between the two.
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Affiliation(s)
- Wei Han
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, 730030, China
- The Second Clinical Medical College of Lanzhou University, Lanzhou, 730000, China
| | - Wei Zhang
- The Second Clinical Medical College of Lanzhou University, Lanzhou, 730000, China
| | - Xuan Ren
- The Second Clinical Medical College of Lanzhou University, Lanzhou, 730000, China.
- Department of Endocrinology and Metabolism, Lanzhou University Second Hospital, Lanzhou, 730030, China.
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Naemi Kermanshahi M, Safaei E, Tutunchi H, Naghshi S, Mobarak S, Asadi M, Sadeghi O. Fruit and vegetable intake in relation to gastric cancer risk: A comprehensive and updated systematic review and dose-response meta-analysis of cohort studies. Front Nutr 2023; 10:973171. [PMID: 36814513 PMCID: PMC9939448 DOI: 10.3389/fnut.2023.973171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 01/04/2023] [Indexed: 02/08/2023] Open
Abstract
Background Since the release of previous meta-analyses, some studies on the associations between fruit and vegetable intake with gastric cancer risk have been published. Therefore, we aimed to update the previous meta-analyses on these associations by including recently published studies as well as considering the main limitations of those meta-analyses. Methods A comprehensive search was conducted in online databases including PubMed, Scopus, ISI Web of Science, and Google Scholar to detect relevant prospective cohort studies published up to October 2021. Summary relative risks (RRs) were estimated using a random-effects model. Results Overall, 17 articles containing 18 prospective studies with a total sample size of 1,527,995 participants, aged between 18 and 90 years, were included in the current meta-analysis. During the follow-up periods ranging between 4.5 and 21 years, 8,477 cases of gastric cancer were diagnosed. A higher intake of total fruit [RR: 0.87, 95% confidence interval (CI): 0.80 to 0.94, I 2 = 0%] and total fruit and vegetable (RR: 0.75, 95% CI: 0.61 to 0.93, I 2 = 55.2%) were associated with a lower risk of gastric cancer. For total vegetable intake, a significant inverse association was found among the studies that controlled their analysis for energy intake. Based on the linear dose-response analysis, each 100 g/day increase in total fruit intake (Pooled RR: 0.95, 95% CI: 0.90 to 0.99, I 2 = 49%) and 200 g/day increase in total fruit and vegetable intake (RR: 0.94, 95% CI: 0.88 to 0.99, I 2 = 37.6%) were associated with a 5 and 6% lower risk of gastric cancer, respectively. Conclusion Fruit and vegetable consumption has a protective association with gastric cancer risk.
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Affiliation(s)
- Mohammad Naemi Kermanshahi
- Student Research Committee, Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ehsan Safaei
- Student Research Committee, Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran,Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Helda Tutunchi
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sina Naghshi
- Student Research Committee, Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran,Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sara Mobarak
- Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Masoomeh Asadi
- Department of Operating Room Nursing, Abadan Faculty of Medical Sciences, Abadan, Iran,Masoomeh Asadi,
| | - Omid Sadeghi
- Nutrition and Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran,Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran,*Correspondence: Omid Sadeghi,
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Kim SY, Eun CS, Han DS, Kim YS, Song KS, Choi BY, Kim HJ. A high glycemic index and glycemic load increased the risk of gastric cancer: a case-control study in Korea. Nutr Res 2022; 105:11-19. [DOI: 10.1016/j.nutres.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 10/18/2022]
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Zhao H, Jin X. Causal associations between dietary antioxidant vitamin intake and lung cancer: A Mendelian randomization study. Front Nutr 2022; 9:965911. [PMID: 36118777 PMCID: PMC9479338 DOI: 10.3389/fnut.2022.965911] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Background Oxidative stress is currently considered to be closely related to the occurrence of respiratory tumors, especially lung cancer. Many observational studies have shown that increased antioxidant intake can reduce the risk of lung cancer, but the results are still controversial. Therefore, we performed a two-sample Mendelian randomized (MR) analysis to clarify the causal relationship between antioxidant vitamins and lung cancer. Methods To assess the causal effect of dietary antioxidant vitamin intake on lung cancer, we conducted a two-sample MR analysis and we extracted single-nucleotide polymorphisms (SNPs) that are associated with antioxidants from genome-wide association studies (GWASs) of the UK biobank. We gathered summary data for lung cancer from the International Lung Cancer Consortium (ILCCO), including 11,348 cases and 15,861 controls, and applied the inverse-variance weighted (IVW) method as the primary MR analysis, and performed a sensitivity analysis to verify the results. Results The results showed that higher dietary retinol intake was causally associated with lung cancer overall [odds ratio (OR) = 1.844, 95% CI, 1.359-2.502, p = 0.00009], squamous cell lung cancer (OR = 2.162, 95% CI, 1.117-4.183, p = 0.022), and lung adenocarcinoma (OR = 1.706, 95% CI, 1.084-2.685, p = 0.021). Additionally, carotene was positively correlated with lung adenocarcinoma (OR = 1.510, 95% CI, 1.002-2.276, p = 0.049). However, there was a non-significant relationship between the intake of other dietary antioxidants (vitamin C and vitamin E) and lung cancer. Conclusion Our research showed that dietary retinol intake has an adverse impact on lung cancer, and carotene might increase the risk of adenocarcinoma. This highlights the importance of revealing the underlying mechanisms of dietary antioxidant vitamins in lung cancer and delivers an important health message that dietary antioxidant vitamin intake may not be necessary for the prevention of lung cancer. It also provides a basis for future research.
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Affiliation(s)
- Hang Zhao
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China.,Department of Urology, China-Japan Friendship Hospital, Beijing, China
| | - Xiaolin Jin
- Department of International Physical Examination Center, The First Affiliated Hospital of China Medical University, Shengyang, China
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7
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Tan MC, Mallepally N, Ho Q, Liu Y, El-Serag HB, Thrift AP. Dietary Factors and Gastric Intestinal Metaplasia Risk Among US Veterans. Dig Dis Sci 2021; 66:1600-1610. [PMID: 32535778 PMCID: PMC8845052 DOI: 10.1007/s10620-020-06399-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 06/03/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Studies on diet and gastric intestinal metaplasia (GIM) risk are lacking in US populations. AIM To determine the associations of dietary factors and risk of GIM among a US population with typical American diet. METHODS We analyzed data from a cross-sectional study of veterans attending primary care and endoscopy clinics at the Houston VA Medical Center. Patients completed a 110-item Block Food Frequency Questionnaire then underwent upper endoscopy with gastric mapping biopsies. We compared cases defined by GIM on ≥ 1 non-cardia gastric biopsy to controls without GIM. Associations of dietary factors and GIM were estimated using logistic regression models as odds ratios (OR) and 95% confidence intervals (CI). RESULTS Among 423 GIM cases and 1796 controls, cases were older (62.1 vs. 59.9 years) and more likely to be male (97.2% vs. 90.8%) and non-White (58.6% vs. 39.0%). GIM cases had lower fat intake (percent kcal from fat tertile 1: 43.6% vs. 33.4%) and higher carbohydrate intake (percent kcal from carbohydrate T3: 41.8% vs. 33.3%) than controls. Adjusting for age, gender, race, smoking, and Helicobacter pylori, percent kcal from carbohydrates (T3 vs. T1: OR 1.35, 95% CI 1.08-1.67), fruit intake (T3 vs. T1: OR 1.28, 95% CI 1.02-1.61), and fiber intake (T3 vs. T1: OR 1.37, 95% CI 1.04-1.80) were associated with GIM. In subgroup analyses, these associations were primarily seen in non-White patients. CONCLUSIONS Few dietary factors, including high carbohydrate intake, are associated with increased risk of GIM in US populations, independent of H. pylori or smoking.
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Affiliation(s)
- Mimi C Tan
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Baylor College of Medicine, One Baylor Plaza, MS: BCM 285, Houston, TX, 77030-3498, USA.
| | | | - Quynh Ho
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Baylor College of Medicine, One Baylor Plaza, MS: BCM 285, Houston, TX, 77030-3498, USA
- University of St. Thomas, Houston, TX, USA
| | - Yan Liu
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Baylor College of Medicine, One Baylor Plaza, MS: BCM 285, Houston, TX, 77030-3498, USA
- Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
| | - Hashem B El-Serag
- Department of Medicine, Baylor College of Medicine, Houston, TX, USA
- Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
| | - Aaron P Thrift
- Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
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8
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Kayamba V. Nutrition and upper gastrointestinal cancers: An overview of current understandings. Semin Cancer Biol 2021; 83:605-616. [DOI: 10.1016/j.semcancer.2021.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 02/09/2021] [Accepted: 03/04/2021] [Indexed: 02/07/2023]
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Effect of Feijoa Sellowiana Acetonic Extract on Proliferation Inhibition and Apoptosis Induction in Human Gastric Cancer Cells. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gastric cancer (GC) still represents a relevant health problem in the world for both incidence and mortality rates. Many studies underlined that natural products consumption could reduce GC risk, indicating flavonoids as responsible for the beneficial effects through the modulation of several biological processes, such as the inhibition of cancer antioxidant defense and induction of apoptosis. Since Feijoa sellowiana fruit is known to contain high amounts of flavonoids, among which is flavone, we evaluated the antiproliferative and proapoptotic effects of F. sellowiana acetonic extract on GC cell lines through MTS and Annexin-V FITC assays. Among three GC cell lines tested, SNU-1 results being sensitive to both the F. sellowiana acetonic extract and synthetic flavone, which was used as the reference treatment. Moreover, we evaluated their antioxidant effects, assessing the activity of the antioxidant enzymes supeoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) in polymorphonuclear cells. We found a significant increase of their activity after exposure to both F. sellowiana acetonic extract and flavone, supporting the idea that a diet that includes flavone-rich fruits could be of benefit for health. In addition to this antioxidant effect on normal cells, this study indicates, for the first time, an anticancer effect of F. sellowiana acetonic extract in GC cells.
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Pathways of Gastric Carcinogenesis, Helicobacter pylori Virulence and Interactions with Antioxidant Systems, Vitamin C and Phytochemicals. Int J Mol Sci 2020; 21:ijms21176451. [PMID: 32899442 PMCID: PMC7503565 DOI: 10.3390/ijms21176451] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/21/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori is a class one carcinogen which causes chronic atrophic gastritis, gastric intestinal metaplasia, dysplasia and adenocarcinoma. The mechanisms by which H. pylori interacts with other risk and protective factors, particularly vitamin C in gastric carcinogenesis are complex. Gastric carcinogenesis includes metabolic, environmental, epigenetic, genomic, infective, inflammatory and oncogenic pathways. The molecular classification of gastric cancer subtypes has revolutionized the understanding of gastric carcinogenesis. This includes the tumour microenvironment, germline mutations, and the role of Helicobacter pylori bacteria, Epstein Barr virus and epigenetics in somatic mutations. There is evidence that ascorbic acid, phytochemicals and endogenous antioxidant systems can modify the risk of gastric cancer. Gastric juice ascorbate levels depend on dietary intake of ascorbic acid but can also be decreased by H. pylori infection, H. pylori CagA secretion, tobacco smoking, achlorhydria and chronic atrophic gastritis. Ascorbic acid may be protective against gastric cancer by its antioxidant effect in gastric cytoprotection, regenerating active vitamin E and glutathione, inhibiting endogenous N-nitrosation, reducing toxic effects of ingested nitrosodimethylamines and heterocyclic amines, and preventing H. pylori infection. The effectiveness of such cytoprotection is related to H. pylori strain virulence, particularly CagA expression. The role of vitamin C in epigenetic reprogramming in gastric cancer is still evolving. Other factors in conjunction with vitamin C also play a role in gastric carcinogenesis. Eradication of H. pylori may lead to recovery of vitamin C secretion by gastric epithelium and enable regression of premalignant gastric lesions, thereby interrupting the Correa cascade of gastric carcinogenesis.
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Phuoc LH, Sengngam K, Ogawa T, Ngatu NR, Ikeda S, Hoc TH, Phu PV, Minh DT, Ngoan LT. Fruit and Vegetable Intake and Stomach Cancer among Male Adults: A Case-Control Study in Northern Viet Nam. Asian Pac J Cancer Prev 2020; 21:2109-2115. [PMID: 32711439 PMCID: PMC7573430 DOI: 10.31557/apjcp.2020.21.7.2109] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 07/20/2020] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE This study investigated the association between fruit and vegetable intake and stomach cancer, with considering the impacts of Helicobacter pylori (H. pylori) infection and tobacco smoking. METHODS A case-control study featuring 80 male incident stomach-cancer cases and 146 male controls was conducted in a general hospital in Viet Nam. A semi-quantitative food frequency and demographic lifestyle questionnaire were used; and venous blood samples were collected to determine H. pylori status by IgG ELISA. The respective associations between fruit and vegetable intake and stomach cancer were examined using unconditional logistic regression analysis with adjustments for possible cofactors. RESULTS Fruit intake and stomach cancer showed a weak inverse association when this became non-significant after adjusting for H. pylori infection (OR = 0.50, 95%CI: 0.22-1.12, p trend = 0.094). Stratifying by H. pylori status returned a negative trend for fruit intake and stomach cancer among H. pylori-negative participants (OR = 0.21, 95%CI: 0.06-0.69, p trend = 0.010), but no significant interaction for H. pylori-positive participants (OR = 0.76, 95%CI: 0.21-2.68, p trend = 0.670). Vegetable intake and stomach cancer showed no association, regardless of H. pylori status. Compared to ever-smokers with low intake, never-smokers with high vegetable (OR = 0.25, 95% CI: 0.06-0.95) and fruit intake (OR = 0.20, 95%CI: 0.06-0.65) showed the lowest odds of stomach cancer. CONCLUSIONS Fruit, but not vegetable, intake showed a weak inverse association with stomach cancer. H. pylori infection and tobacco-smoking status may influence the protective effects of fruit and vegetable intake on stomach cancer. .
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Affiliation(s)
- Le Hong Phuoc
- Graduate School of Public Health, International University of Health and Welfare, Narita city, Chiba Prefecture, Japan.
- Faculty of Public Health, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh city, Viet Nam.
| | | | - Toshio Ogawa
- Graduate School of Public Health, International University of Health and Welfare, Narita city, Chiba Prefecture, Japan.
| | - Nlandu Roger Ngatu
- Department of Public Health, School of Medicine, International University of Health and Welfare, Narita city, Chiba prefecture, Japan.
| | - Shunya Ikeda
- Graduate School of Public Health, International University of Health and Welfare, Narita city, Chiba Prefecture, Japan.
| | | | | | | | - Le Tran Ngoan
- Department of Public Health, School of Medicine, International University of Health and Welfare, Narita city, Chiba prefecture, Japan.
- Institute of Research and Development, Duy Tan University, Da Nang city, Vietnam.
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Abbasalizad Farhangi M, Vajdi M. Dietary Total Antioxidant Capacity (TAC) Significantly Reduces the Risk of Site-Specific Cancers: An Updated Systematic Review and Meta-Analysis. Nutr Cancer 2020; 73:721-739. [DOI: 10.1080/01635581.2020.1771385] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mahdieh Abbasalizad Farhangi
- Research Center for Evidence Based Medicine, Health Management and Safety Promotion Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Vajdi
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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13
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Mao QQ, Xu XY, Shang A, Gan RY, Wu DT, Atanasov AG, Li HB. Phytochemicals for the Prevention and Treatment of Gastric Cancer: Effects and Mechanisms. Int J Mol Sci 2020; 21:E570. [PMID: 31963129 PMCID: PMC7014214 DOI: 10.3390/ijms21020570] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer is the fifth most common cancer, and the third most prevalent cause of cancer-related deaths in the world. Voluminous evidence has demonstrated that phytochemicals play a critical role in the prevention and management of gastric cancer. Most epidemiological investigations indicate that the increased intake of phytochemicals could reduce the risk of gastric cancer. Experimental studies have elucidated the mechanisms of action, including inhibiting cancer cell proliferation, inducing apoptosis and autophagy, and suppressing angiogenesis as well as cancer cell metastasis. These mechanisms have also been related to the inhibition of Helicobacter pylori and the modulation of gut microbiota. In addition, the intake of phytochemicals could enhance the efficacy of anticancer chemotherapeutics. Moreover, clinical studies have illustrated that phytochemicals have the potential for the prevention and the management of gastric cancer in humans. To provide an updated understanding of relationships between phytochemicals and gastric cancer, this review summarizes the effects of phytochemicals on gastric cancer, highlighting the underlying mechanisms. This review could be helpful for guiding the public in preventing gastric cancer through phytochemicals, as well as in developing functional food and drugs for the prevention and treatment of gastric cancer.
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Affiliation(s)
- Qian-Qian Mao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (Q.-Q.M.); (X.-Y.X.); (A.S.)
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (Q.-Q.M.); (X.-Y.X.); (A.S.)
| | - Ao Shang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (Q.-Q.M.); (X.-Y.X.); (A.S.)
| | - Ren-You Gan
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ding-Tao Wu
- Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya’an 625014, China;
| | - Atanas G. Atanasov
- Department of Molecular Biology, Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland;
- Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev str., 1113 Sofia, Bulgaria
- Department of Pharmacognosy, University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Digital Health and Patient Safety, Medical University of Vienna, Spitalgasse 23, 1090 Vienna, Austria
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (Q.-Q.M.); (X.-Y.X.); (A.S.)
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Cavallo P, Vinale F, Sepe I, Galasso G, Fedele FL, Sicari A, Zito L, Lorito M. Reinforced Olive Pâté as a Source of Antioxidants with Positive Effects on Young Smokers. ACTA ACUST UNITED AC 2019; 55:medicina55100680. [PMID: 31600985 PMCID: PMC6843643 DOI: 10.3390/medicina55100680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/26/2019] [Accepted: 10/07/2019] [Indexed: 12/31/2022]
Abstract
Background and objectives: Olive pâté (OP) is an olive-derived product with potentially beneficial effects on human health due to the presence of natural antioxidants. The present dietary supplementation study aimed to evaluate the effects on blood antioxidant levels of an olive pâté reinforced with natural antioxidants (ROP) recovered from olive mill waste. Materials and methods: Ninety-eight healthy volunteers (M = 54, 55%, age 18–25) were divided into two groups: A (n = 49), practicing three or more days of physical activity a week, and B (n = 49), practicing less than two. Each group was split into two subgroups, receiving dietary supplementation with OP or ROP. The status of smoker was also recorded, and a biological antioxidant potential (BAP) test was performed on each subject. Results: The BAP values increased with both OP (n = 30) and ROP (n = 68) but ROP supplementation showed higher increments (736.9 μmol/L) than OP (339.6). The increment was significantly higher for smokers (n = 15), 1122.9 vs. non-smokers (n = 53), 635.7, with values in percent of baseline, respectively, 34.6% and 16.2% (P < 0.01). Conclusions: The ROP nutritional supplementation appears useful to increase antioxidant activity, with better effect in smokers; further studies should confirm the finding and investigate its biological bases.
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Affiliation(s)
- Pierpaolo Cavallo
- Università di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
- ISC-CNR, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Francesco Vinale
- Università di Napoli "Federico II", Via Università, 96, 80055 Portici (NA), Italy.
| | - Immacolata Sepe
- Diagnostica Cavallo-Centro Ricerca, Via C. Calo', 2, 84123 Salerno, Italy.
| | - Gennaro Galasso
- Università di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
| | | | - Andrea Sicari
- Linfa Scarl, Via Ferrante Imparato 27/29, 80100 Napoli, Italy.
| | - Loredana Zito
- Santa Rita Srl, Via Zona Industriale, 89900 Vibo Valentia, Italy.
| | - Matteo Lorito
- Università di Napoli "Federico II", Via Università, 96, 80055 Portici (NA), Italy.
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15
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Kim JH, Lee J, Choi IJ, Kim YI, Kwon O, Kim H, Kim J. Dietary Carotenoids Intake and the Risk of Gastric Cancer: A Case-Control Study in Korea. Nutrients 2018; 10:E1031. [PMID: 30087311 PMCID: PMC6115955 DOI: 10.3390/nu10081031] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/02/2018] [Accepted: 08/04/2018] [Indexed: 01/28/2023] Open
Abstract
Although the incidence of gastric cancer (GC) has declined, it remains the second most common cancer in Korea. As a class of phytochemicals, carotenoids are fat-soluble pigments that are abundant in fruits and vegetables and have health-promoting properties, including cancer prevention effects. This case-control study investigated the effects of total dietary carotenoids, dietary carotenoid subclasses (α-carotene, β-carotene, β-cryptoxanthin, lutein/zeaxanthin, and lycopene), and foods contributing to the dietary intake of each carotenoid on the risk of GC. Four hundred and fifteen cases and 830 controls were recruited from the National Cancer Center Hospital in Korea between March 2011 and December 2014. A significant inverse association between total dietary carotenoids and GC risk was observed among women (odds ratio (OR) 0.56, 95% confidence interval (CI) 0.32⁻0.99). A higher intake of dietary lycopene was inversely associated with GC risk overall in the subjects (OR 0.60, 95% CI 0.42⁻0.85, p for trend = 0.012), men (OR 0.60, 95% CI 0.39⁻0.93), and women (OR 0.54, 95% CI 0.30⁻0.96, p for trend = 0.039). This significant association between dietary lycopene intake and GC risk was also observed in the subgroups of Helicobacter pylori (H. pylori)-positive subjects and those who had ever smoked. Among the major contributing foods of dietary lycopene, consumption of tomatoes and tomato ketchup was inversely associated with GC risk in the overall subjects, men, and women. Based on our findings, a higher intake of dietary lycopene and contributing foods of lycopene (tomatoes and tomato ketchup) may be inversely associated with the risk of GC.
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Affiliation(s)
- Ji Hyun Kim
- Graduate School of Cancer Science and Policy, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.
| | - Jeonghee Lee
- Graduate School of Cancer Science and Policy, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.
| | - Il Ju Choi
- Center for Gastric Cancer, National Cancer Center Hospital, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.
| | - Young-Il Kim
- Center for Gastric Cancer, National Cancer Center Hospital, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.
| | - Oran Kwon
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
| | - Hyesook Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
| | - Jeongseon Kim
- Graduate School of Cancer Science and Policy, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.
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Ullah MF, Bhat SH, Husain E, Abu-Duhier F, Hadi SM, Sarkar FH, Ahmad A. Pharmacological Intervention through Dietary Nutraceuticals in Gastrointestinal Neoplasia. Crit Rev Food Sci Nutr 2017; 56:1501-18. [PMID: 25365584 DOI: 10.1080/10408398.2013.772091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neoplastic conditions associated with gastrointestinal (GI) tract are common worldwide with colorectal cancer alone accounting for the third leading rate of cancer incidence. Other GI malignancies such as esophageal carcinoma have shown an increasing trend in the last few years. The poor survival statistics of these fatal cancer diseases highlight the need for multiple alternative treatment options along with effective prophylactic strategies. Worldwide geographical variation in cancer incidence indicates a correlation between dietary habits and cancer risk. Epidemiological studies have suggested that populations with high intake of certain dietary agents in their regular meals have lower cancer rates. Thus, an impressive embodiment of evidence supports the concept that dietary factors are key modulators of cancer including those of GI origin. Preclinical studies on animal models of carcinogenesis have reflected the pharmacological significance of certain dietary agents called as nutraceuticals in the chemoprevention of GI neoplasia. These include stilbenes (from red grapes and red wine), isoflavones (from soy), carotenoids (from tomatoes), curcuminoids (from spice turmeric), catechins (from green tea), and various other small plant metabolites (from fruits, vegetables, and cereals). Pleiotropic action mechanisms have been reported for these diet-derived chemopreventive agents to retard, block, or reverse carcinogenesis. This review presents a prophylactic approach to primary prevention of GI cancers by highlighting the translational potential of plant-derived nutraceuticals from epidemiological, laboratory, and clinical studies, for the better management of these cancers through consumption of nutraceutical rich diets and their intervention in cancer therapeutics.
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Affiliation(s)
- Mohammad F Ullah
- a Prince Fahad Research Chair , Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk , Tabuk , Saudi Arabia
| | - Showket H Bhat
- a Prince Fahad Research Chair , Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk , Tabuk , Saudi Arabia
| | - Eram Husain
- a Prince Fahad Research Chair , Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk , Tabuk , Saudi Arabia
| | - Faisel Abu-Duhier
- a Prince Fahad Research Chair , Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk , Tabuk , Saudi Arabia
| | - S M Hadi
- b Department of Biochemistry , Faculty of Life Sciences, Aligarh Muslim University , Uttar Pradesh , India
| | - Fazlul H Sarkar
- c Department of Pathology , Karmanos Cancer Institute, Wayne State University School of Medicine , Detroit , Michigan USA
| | - Aamir Ahmad
- c Department of Pathology , Karmanos Cancer Institute, Wayne State University School of Medicine , Detroit , Michigan USA
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Wang T, Cai H, Sasazuki S, Tsugane S, Zheng W, Cho ER, Jee SH, Michel A, Pawlita M, Xiang YB, Gao YT, Shu XO, You WC, Epplein M. Fruit and vegetable consumption, Helicobacter pylori antibodies, and gastric cancer risk: A pooled analysis of prospective studies in China, Japan, and Korea. Int J Cancer 2016; 140:591-599. [PMID: 27759938 DOI: 10.1002/ijc.30477] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 08/31/2016] [Accepted: 10/06/2016] [Indexed: 12/14/2022]
Abstract
Epidemiological findings on the association between fruit and vegetable consumption and gastric cancer risk remain inconsistent. The present analysis included 810 prospectively ascertained non-cardia gastric cancer cases and 1,160 matched controls from the Helicobacter pylori Biomarker Cohort Consortium, which collected blood samples, demographic, lifestyle, and dietary data at baseline. Conditional logistic regression adjusting for total energy intake, smoking, and H. pylori status, was applied to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for gastric cancer risk across cohort- and sex-specific quartiles of fruit and vegetable intake. Increasing fruit intake was associated with decreasing risk of non-cardia gastric cancer (OR = 0.71, 95% CI: 0.52-0.95, p trend = 0.02). Compared to low-fruit consumers infected with CagA-positive H. pylori, high-fruit consumers without evidence of H. pylori antibodies had the lowest odds for gastric cancer incidence (OR = 0.12, 95% CI: 0.06-0.25), whereby the inverse association with high-fruit consumption was attenuated among individuals infected with CagA-positive H. pylori (OR = 0.82, 95% CI: 0.66-1.03). To note, the small number of H. pylori negative individuals does influence this finding. We observed a weaker, nondose-response suggestion of an inverse association of vegetable intake with non-cardia gastric cancer risk. High fruit intake may play a role in decreasing risk of non-cardia gastric cancer in Asia.
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Affiliation(s)
- Tianyi Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Peking University Health Science Center, Beijing, China.,Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | - Hui Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | - Shizuka Sasazuki
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Shoichiro Tsugane
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | - Eo Rin Cho
- Department of Epidemiology and Health Promotion, Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Korea
| | - Sun Ha Jee
- Department of Epidemiology and Health Promotion, Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Korea
| | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections, Research Program in Infection, Inflammation, and Cancer, German Cancer Research Center (DFKZ), Heidelberg, Germany
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections, Research Program in Infection, Inflammation, and Cancer, German Cancer Research Center (DFKZ), Heidelberg, Germany
| | - Yong-Bing Xiang
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | - Wei-Cheng You
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Peking University Health Science Center, Beijing, China
| | - Meira Epplein
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
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18
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Grundy A, Poirier AE, Khandwala F, McFadden A, Friedenreich CM, Brenner DR. Cancer incidence attributable to insufficient fruit and vegetable consumption in Alberta in 2012. CMAJ Open 2016; 4:E760-E767. [PMID: 28018892 PMCID: PMC5173484 DOI: 10.9778/cmajo.20160037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Sufficient fruit and vegetable consumption (≥ 5 servings/d) has been associated with a probable decreased risk for cancers of the oral cavity, pharynx, larynx, esophagus, stomach and lung (fruit only). The purpose of this study was to estimate the proportion and absolute number of cancer cases in Alberta in 2012 that were attributable to insufficient fruit and vegetable consumption. METHODS The numbers and proportions of cancers attributable to insufficient fruit and vegetable consumption were estimated using the population attributable risk. Relative risks were obtained from international collaborative panels and peer-reviewed literature. Prevalence data for insufficient fruit and vegetable consumption in Alberta were obtained from the Canadian Community Health Survey (2003, 2004, 2005, 2007/08). Age-, site- and sex-specific cancer incidence data for 2012 were obtained from the Alberta Cancer Registry. RESULTS The proportion of men consuming 5 or more servings of fruits and vegetables per day ranged from 25.9%-30.4% across age groups; the range among women was 46.8%-51.5% across age groups. The proportion of cancers attributable to insufficient fruit and vegetable consumption in Alberta was highest for esophageal cancer (40.0%) and lowest for lung cancer (3.3%). Overall, 290 cancer cases (1.8%) in Alberta in 2012 were attributable to insufficient fruit and vegetable consumption. INTERPRETATION Almost 2% of cancers in Alberta can be attributed to insufficient fruit and vegetable consumption. A diet rich in fruits and vegetables has benefits for the prevention of cancer and other chronic diseases; thus, increasing the proportion of Albertans who meet cancer prevention guidelines for fruit and vegetable consumption is a priority.
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Affiliation(s)
- Anne Grundy
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
| | - Abbey E Poirier
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
| | - Farah Khandwala
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
| | - Alison McFadden
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
| | - Christine M Friedenreich
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
| | - Darren R Brenner
- Department of Cancer Epidemiology and Prevention Research (Grundy, Poirier, Khandwala, McFadden, Friedenreich, Brenner), CancerControl Alberta, Alberta Health Services; Department of Oncology, Cumming School of Medicine (Friedenreich, Brenner), University of Calgary; Department of Community Health Sciences (Friedenreich, Brenner), Cumming School of Medicine, University of Calgary, Calgary, Alta
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Wang Y, Zhang XN, Xie WH, Zheng YX, Cao JP, Cao PR, Chen QJ, Li X, Sun CD. The Growth of SGC-7901 Tumor Xenografts Was Suppressed by Chinese Bayberry Anthocyanin Extract through Upregulating KLF6 Gene Expression. Nutrients 2016; 8:nu8100599. [PMID: 27690088 PMCID: PMC5083987 DOI: 10.3390/nu8100599] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/03/2016] [Accepted: 09/20/2016] [Indexed: 01/12/2023] Open
Abstract
To investigate the antitumor effect of anthocyanins extracted from Chinese bayberry fruit (Myrica rubra Sieb. et Zucc.), a nude mouse tumor xenograft model was established. Treatments with C3G (cyanidin-3-glucoside, an anthocyanin) significantly suppressed the growth of SGC-7901 tumor xenografts in a dose-dependent manner. Immunohistochemical staining showed a significant increase in p21 expression, indicating that the cell cycle of tumor xenografts was inhibited. qPCR screening showed that C3G treatment up-regulated the expression of the KLF6 gene, which is an important tumor suppressor gene inactivated in many human cancers. Western blot showed that C3G treatments markedly increased KLF6 and p21 protein levels, inhibited CDK4 and Cyclin D1 expression, but did not notably change the expression of p53. These results indicated that KLF6 up-regulates p21 in a p53-independent manner and significantly reduces tumor proliferation. This study provides important information for the possible mechanism of C3G-induced antitumor activity against gastric adenocarcinoma in vivo.
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Affiliation(s)
- Yue Wang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Xia-Nan Zhang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Wen-Hua Xie
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Yi-Xiong Zheng
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China.
| | - Jin-Ping Cao
- Taizhou Academy of Agricultural Sciences, Linhai 317000, China.
| | - Pei-Rang Cao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Qing-Jun Chen
- National Light Industry Food Quality Inspection Hangzhou Station, Hangzhou 310009, China.
| | - Xian Li
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Chong-de Sun
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
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Nutrition and Helicobacter pylori: Host Diet and Nutritional Immunity Influence Bacterial Virulence and Disease Outcome. Gastroenterol Res Pract 2016; 2016:3019362. [PMID: 27688750 PMCID: PMC5027306 DOI: 10.1155/2016/3019362] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/03/2016] [Indexed: 12/19/2022] Open
Abstract
Helicobacter pylori colonizes the stomachs of greater than 50% of the world's human population making it arguably one of the most successful bacterial pathogens. Chronic H. pylori colonization results in gastritis in nearly all patients; however in a subset of people, persistent infection with H. pylori is associated with an increased risk for more severe disease outcomes including B-cell lymphoma of mucosal-associated lymphoid tissue (MALT lymphoma) and invasive adenocarcinoma. Research aimed at elucidating determinants that mediate disease progression has revealed genetic differences in both humans and H. pylori which increase the risk for developing gastric cancer. Furthermore, host diet and nutrition status have been shown to influence H. pylori-associated disease outcomes. In this review we will discuss how H. pylori is able to create a replicative niche within the hostile host environment by subverting and modifying the host-generated immune response as well as successfully competing for limited nutrients such as transition metals by deploying an arsenal of metal acquisition proteins and virulence factors. Lastly, we will discuss how micronutrient availability or alterations in the gastric microbiome may exacerbate negative disease outcomes associated with H. pylori colonization.
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Li Y, Liu B, Yang F, Yu Y, Zeng A, Ye T, Yin W, Xie Y, Fu Z, Zhao C. Lobaplatin induces BGC-823 human gastric carcinoma cell apoptosis via ROS- mitochondrial apoptotic pathway and impairs cell migration and invasion. Biomed Pharmacother 2016; 83:1239-1246. [PMID: 27565846 DOI: 10.1016/j.biopha.2016.08.053] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 08/19/2016] [Indexed: 02/05/2023] Open
Abstract
Human gastric cancer is the fifth common cancer with considerable metastasis potential, and its high incidence and mortality rate threaten public health. In this study, we examined the anticancer effects of lobaplatin on the human gastric carcinoma cell line BGC-823 in vitro, and explored its relative mechanisms. The results of MTT assay showed dose- and time-dependent cytotoxicity in BGC-823 cells with lobaplatin. Flow cytometry (FCM) assay indicated that lobaplatin affected BGC-823 cells' survival by inducing apoptosis. Western blot analysis also demonstrated that the occurrence of its apoptosis was associated with activation of Cleaved caspase-3 and Bax, downregulation of Bcl-2. Moreover, lobaplatin could also increase the reactive oxygen species (ROS) slightly and decrease the mitochondrial membrane potential (ΔYm) obviously, elucidating that lobaplatin may induce apoptosis via mitochondria-dependent apoptotic pathway. Furthermore, lobaplatin markedly blocked BGC-823 cells migration and invasion, and the reduction of matrix metalloproteinase (MMP) MMP-2 and MMP-9 expression were also observed in vitro. Our findings demonstrated the chemotherapeutic potential of lobaplatin for treatment of human gastric carcinoma cell line BGC-823 by inhibiting proliferation, inducing apoptosis and attenuating cell migration and invasion.
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Affiliation(s)
- Yali Li
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China; Department of Nutrition and Food Hygiene, School of Public Health, West China Medical School, Sichuan University, Chengdu, China
| | - Bin Liu
- Department of Pulmonary Tumor Ward, Sichuan Cancer Hospital, Chengdu, China
| | - Fangfang Yang
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yang Yu
- Peritoneal Cancer Surgery, Beijing Millennium Monument Hospital, Capital Medical University, Beijing, China
| | - Anqi Zeng
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Tinghong Ye
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Wenya Yin
- Department of Nutrition and Food Hygiene, School of Public Health, West China Medical School, Sichuan University, Chengdu, China
| | - Yongmei Xie
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Zhengyan Fu
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.
| | - Chengjian Zhao
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.
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Somi MH, Mousavi SM, Naghashi S, Faramarzi E, Jafarabadi MA, Ghojazade M, Majdi A, Naseri Alavi SA. Is there any relationship between food habits in the last two decades and gastric cancer in North-Western Iran? Asian Pac J Cancer Prev 2015; 16:283-90. [PMID: 25640366 DOI: 10.7314/apjcp.2015.16.1.283] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The aims of this case-control study were to assess the correlation between some food habits in the last two decades and gastric cancer in East Azerbaijan of Iran. MATERIALS AND METHODS In this hospital based case control study, 616 patients (212 gastric cancer patients, 404 cancer free patients) were recruited. Food habits of patients over the past two decades were assessed with a structured questionnaire. We used conditional logistic regression analysis for estimating crude and adjusted odds ratios (OR) and their respective 95% confidence intervals (95%CI). RESULTS In this study, over-eating, consumption of high fat milk and yogurt and especial types of cheese increased the risk of gastric cancer (All<0.05). Consumption of such especial cheeses such as Koze and Khiki increased the risk of gastric cancer by 12.6 fold (95% CI:1.99-79.36) and 7.36 fold (95% CI:1.33- 40.54), respectively. In addition, high fat food, moldy food, and pickled vegetables consumption as well as reuse of cooking oil for frying were significantly associated with gastric cancer risk. Furthermore, intake of Ghorme (deep fried meat) was positively correlated with gastric cancer risk (OR:1.31;95%CI: 0.91-1.87). CONCLUSIONS It can be confirmed that particular food habits which have been very common in East-Azerbaijan in the last two past decades increase risk of gastric cancer. According to our results and taking into account the long latency period of gastric cancer it can be concluded that nutrition education for a healthy diet should be performed from early childhood. However, further well designed cohort studies are needed to achieve more clear results.
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Affiliation(s)
- Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran E-mail :
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Han J, Jiang Y, Liu X, Meng Q, Xi Q, Zhuang Q, Han Y, Gao Y, Ding Q, Wu G. Dietary Fat Intake and Risk of Gastric Cancer: A Meta-Analysis of Observational Studies. PLoS One 2015; 10:e0138580. [PMID: 26402223 PMCID: PMC4581710 DOI: 10.1371/journal.pone.0138580] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 09/01/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Consumption of dietary fat has been reported to be associated with gastric cancer risk, but the results of epidemiologic studies remain inconsistent. We conducted a meta-analysis to summarize the evidence regarding the association between dietary fat intake and gastric cancer risk. METHODS A comprehensive search of PubMed and EMBASE was performed to identify observational studies providing quantitative estimates between dietary fat and gastric cancer risk. Random effects model was used to calculate the summary relative risk(SRR) in the highest versus lowest analysis. Categorical dose-response analysis was conducted to quantify the association between dietary fat intake and gastric cancer risk. Heterogeneity among studies was evaluated using I2 and tau2(between study variance)statistics. Subgroup analysis and publication bias analysis were also performed. RESULTS Twenty-two articles were included in the meta-analysis. The SRR for gastric cancer was 1.18 for individuals with highest intake versus lowest intake of total fat (95% confidence interval [CI]: 0.999-1.39; n = 28; P< 0.001; tau2 = 0.12; I2 = 69.5%, 95% CI: 55%-79%) and 1.08 with a daily increase in total fat intake (20 g/d) (95%CI: 1.02-1.14; n = 6; P = 0.09; tau2 = 0.002; I2 = 46.8%, 95% CI: 0%-79%). Positive association between saturated fat intake (SRR = 1.31; 95%CI: 1.09-1.58;n = 18;P<0.001; tau2 = 0.08; I2 = 60.6%, 95% CI: 34%-76%), inverse association between polyunsaturated fat intake (SRR = 0.77; 95%CI: 0.65-0.92; n = 16; P = 0.003; tau2 = 0.06; I2 = 56.2%, 95% CI: 23%-75%) and vegetable fat intake (SRR = 0.55; 95%CI: 0.41-0.74; n = 4;P = 0.12; tau2 = 0.04; I2 = 48.6%, 95% CI: 0%-83%), and no association between monounsaturated fat intake (SRR = 1.00; 95%CI: 0.79-1.25; n = 14; P< 0.001; tau2 = 0.10; I2 = 63.0%, 95% CI: 34%-79%) and animal fat intake (SRR = 1.10; 95%CI: 0.90-1.33; n = 6; P = 0.13;tau2 = 0.02; I2 = 42.0%, 95% CI: 0%-70%) and gastric cancer risk were observed. CONCLUSIONS Our results suggest that intake of total fat is potentially positively associated with gastric cancer risk, and specific subtypes of fats account for different effects. However, these findings should be confirmed by further well-designed cohort studies with detailed dietary assessments and strict control of confounders.
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Affiliation(s)
- Jun Han
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Yi Jiang
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Xiao Liu
- Nursing Department, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Qingyang Meng
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Qiulei Xi
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Qiulin Zhuang
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Yusong Han
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Ying Gao
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qiurong Ding
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Guohao Wu
- The Clinical Nutrition Center of Shanghai, Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
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Kim MJ, Kim H. Anticancer Effect of Lycopene in Gastric Carcinogenesis. J Cancer Prev 2015; 20:92-6. [PMID: 26151041 PMCID: PMC4492364 DOI: 10.15430/jcp.2015.20.2.92] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/20/2015] [Accepted: 06/20/2015] [Indexed: 12/29/2022] Open
Abstract
Gastric cancer ranks as the most common cancer and the second leading cause of cancer-related death in the world. Risk factors of gastric carcinogenesis include oxidative stress, DNA damage, Helicobacter pylori infection, bad eating habits, and smoking. Since oxidative stress is related to DNA damage, smoking, and H. pylori infection, scavenging of reactive oxygen species may be beneficial for prevention of gastric carcinogenesis. Lycopene, one of the naturally occurring carotenoids, has unique structural and chemical features that contributes to a potent antioxidant activity. It shows a potential anticancer activity and reduces gastric cancer incidence. This review will summarize anticancer effect and mechanism of lycopene on gastric carcinogenesis based on the recent experimental and clinical studies.
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Affiliation(s)
- Mi Jung Kim
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, Korea
| | - Hyeyoung Kim
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, Korea
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Eichelberger L, Murphy G, Etemadi A, Abnet CC, Islami F, Shakeri R, Malekzadeh R, Dawsey SM. Risk of gastric cancer by water source: evidence from the Golestan case-control study. PLoS One 2015; 10:e0128491. [PMID: 26023788 PMCID: PMC4449025 DOI: 10.1371/journal.pone.0128491] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 04/27/2015] [Indexed: 02/07/2023] Open
Abstract
Background Gastric cancer (GC) is the world’s fifth most common cancer, and the third leading cause of cancer-related death. Over 70% of incident cases and deaths occur in developing countries. We explored whether disparities in access to improved drinking water sources were associated with GC risk in the Golestan Gastric Cancer Case Control Study. Methods and Findings 306 cases and 605 controls were matched on age, gender, and place of residence. We conducted unconditional logistic regression to calculate odds ratios (ORs) and 95% confidence intervals (CI), adjusted for age, gender, ethnicity, marital status, education, head of household education, place of birth and residence, homeownership, home size, wealth score, vegetable consumption, and H. pylori seropositivity. Fully-adjusted ORs were 0.23 (95% CI: 0.05–1.04) for chlorinated well water, 4.58 (95% CI: 2.07–10.16) for unchlorinated well water, 4.26 (95% CI: 1.81–10.04) for surface water, 1.11 (95% CI: 0.61–2.03) for water from cisterns, and 1.79 (95% CI: 1.20–2.69) for all unpiped sources, compared to in-home piped water. Comparing unchlorinated water to chlorinated water, we found over a two-fold increased GC risk (OR 2.37, 95% CI: 1.56–3.61). Conclusions Unpiped and unchlorinated drinking water sources, particularly wells and surface water, were significantly associated with the risk of GC.
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Affiliation(s)
- Laura Eichelberger
- Department of Anthropology, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, United States of America; Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Dr., Bethesda, MD, 20892, United States of America
| | - Gwen Murphy
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Dr., Bethesda, MD, 20892, United States of America
| | - Arash Etemadi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Dr., Bethesda, MD, 20892, United States of America; Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Christian C Abnet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Dr., Bethesda, MD, 20892, United States of America
| | - Farhad Islami
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Surveillance and Health Services Research, American Cancer Society, 250 Williams St., Atlanta, GA, 30303, United States of America
| | - Ramin Shakeri
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Malekzadeh
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sanford M Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Dr., Bethesda, MD, 20892, United States of America
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Zhou Y, Wang T, Meng Q, Zhai S. Association of carotenoids with risk of gastric cancer: A meta-analysis. Clin Nutr 2015; 35:109-116. [PMID: 25726725 DOI: 10.1016/j.clnu.2015.02.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 12/24/2014] [Accepted: 02/05/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Prior studies on carotenoids and gastric cancer risk have generated inconsistent results. We performed a meta-analysis of observational studies to summarize the evidence regarding the relation of carotenoids and gastric cancer risk. METHODS A comprehensive search was performed to identify all observational studies providing quantitative estimates between gastric cancer risk and carotenoids. The fixed or random effect model was selected based on the homogeneity test among studies in the highest vs. lowest categorical analyses. RESULTS 13 published case-control studies with 14 results including 3919 cases and 7400 controls, and 8 cohort studies involving 1972 cases of gastric cancer and 96,691 participants, met the inclusion criteria. For case-control studies, only intake of β-carotene and α-carotene were significantly associated with a reduced gastric cancer risk. The summary OR(95%CI) for β-carotene, α-carotene, lycopene and lutein were 0.52(0.46-0.59), 0.59(0.37-0.92), 0.88(0.55-1.41) and 0.85(0.56-1.30) respectively. In contrast, the summary RR(95%CI) for β-carotene, α-carotene, lycopene and lutein were 0.72(0.50-1.03), 0.79(0.58-1.07), 0.80(0.60-1.07) and 0.95(0.77-1.18), respectively. CONCLUSION Although data from case-control studies suggested that β-carotene, α-carotene were inversely associated with risk of gastric cancer, there was no conclusive evidence on this association because of inconsistencies between case-control and cohort studies.
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Affiliation(s)
- Yunping Zhou
- Zibo Center for Disease Control and Prevention, Zibo 255016, Shandong Province, PR China
| | - Tao Wang
- Zibo Center for Disease Control and Prevention, Zibo 255016, Shandong Province, PR China
| | - Qiang Meng
- Zibo Center for Disease Control and Prevention, Zibo 255016, Shandong Province, PR China
| | - Shenyong Zhai
- Zibo Center for Disease Control and Prevention, Zibo 255016, Shandong Province, PR China.
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Wang K, Xu L, Pan L, Xu K, Li G. The functional BRCA1 rs799917 genetic polymorphism is associated with gastric cancer risk in a Chinese Han population. Tumour Biol 2014; 36:393-7. [PMID: 25266802 DOI: 10.1007/s13277-014-2655-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 09/18/2014] [Indexed: 10/24/2022] Open
Abstract
BRCA1 is a crucial tumor suppressor which plays an essential role in maintaining genomic stability and integrity. Accumulated evidences demonstrated that there is frequent chromosome loss of BRCA1 or significant BRCA1 down-regulation via hypermethylation of its promoter in human gastric cancer specimens, highlighting the tumor-suppressing function of BRCA1 in gastric carcinogenesis. There is an rs799917 T>C single nucleotide polymorphism (SNP) located in the BRCA1 coding sequence (CDS). This SNP can disturb the interaction between BRCA1 mRNA and miR-638 and result in significantly decreased BRCA1 expression among carriers of rs799917C allele. In this study, we investigated the association between rs799917 and gastric cancer risk in a Chinese Han population using a case-control design. A total of 660 gastric cancer patients and 800 controls were enrolled and genotyped. Odds ratios (ORs) and 95 % confidence intervals (CIs) were calculated by logistic regression. We found that individuals with the rs799917 CT genotype was significantly associated with gastric cancer risk (OR = 1.81, 95 % CI = 1.28-2.56; P = 0.001). Individuals having the rs799917 CC genotype had an OR of 1.40 (95 % CI = 1.17-1.68; P = 2.2 × 10(-4)) for developing gastric cancer, compared with individual having the rs799917 TT genotype. However, stratified analyses did not find any evident gene-covariates interaction. Our results for the first time indicate that the functional BRCA1 rs799917 polymorphism contributes to gastric cancer susceptibility.
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Affiliation(s)
- Kun Wang
- Department of Vascular Surgery, QianFoShan Hospital, Shandong University, Jinan, Shandong Province, China
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Wu Y, Ye Y, Shi Y, Li P, Xu J, Chen K, Xu E, Yang J. Association between vitamin A, retinol intake and blood retinol level and gastric cancer risk: A meta-analysis. Clin Nutr 2014; 34:620-6. [PMID: 25008141 DOI: 10.1016/j.clnu.2014.06.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 05/15/2014] [Accepted: 06/17/2014] [Indexed: 01/11/2023]
Abstract
BACKGROUND & AIMS The association between dietary vitamin A, retinol intake and blood retinol level and gastric cancer risk has been investigated by many studies. However, the results of these studies were controversial. The aim of our study was to systematically assess this issue. METHODS PUBMED and EMBASE were searched, supplemented with manual-screening for relevant publications. Meta-analyses were performed to evaluate the association between vitamin A, retinol dietary intake or blood retinol level and gastric cancer risk. RESULTS Thirty-one studies were included in this meta-analysis. Comparing the highest with the lowest categories, vitamin A intake significantly reduced gastric cancer risk (pooled RR = 0.66, 95% CI: 0.52-0.84), whereas a marginally inverse association was found between retinol intake (pooled RR = 0.94, 95% CI: 0.87-1.03) or blood retinol level (pooled RR = 0.87, 95% CI: 0.73-1.05) and gastric cancer risk. Interestingly, the results of subgroup analysis indicated that high vitamin A intake and blood retinol level were associated with reduced gastric cancer risk in Western countries, while a marginally inverse association was found between retinol and gastric cancer risk in Western countries. CONCLUSIONS Vitamin A intake was inversely associated with gastric cancer risk, while no significant association was found with retinol intake or blood retinol level.
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Affiliation(s)
- Yihua Wu
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China
| | - Yao Ye
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China
| | - Yu Shi
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Peiwei Li
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China
| | - Jinming Xu
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China
| | - Kun Chen
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China
| | - Enping Xu
- Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Pathology, Zhejiang University School of Medicine, Hangzhou 310058, China.
| | - Jun Yang
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China; Department of Medicine, Hangzhou Normal University, 16, Xuelin Str., Xiasha High Education Zone, Hangzhou, Zhejiang 310036, China.
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Epplein M, Zheng W, Li H, Peek RM, Correa P, Gao J, Michel A, Pawlita M, Cai Q, Xiang YB, Shu XO. Diet, Helicobacter pylori strain-specific infection, and gastric cancer risk among Chinese men. Nutr Cancer 2014; 66:550-7. [PMID: 24666234 DOI: 10.1080/01635581.2014.894096] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Evidence for the association of diet and gastric cancer is equivocal, and the majority of previous studies have not evaluated the interaction of diet and infection with Helicobacter pylori, the leading risk factor for gastric cancer. We examined these associations among 226 cases and 451 controls nested within a prospective cohort. Dietary intakes were calculated from validated food frequency questionnaires. Blood levels of 15 antibodies to Helicobacter pylori proteins were assessed using multiplex serology. Odds ratios (ORs) were calculated using logistic regression. Among individuals infected with high-risk Helicobacter pylori (sero-positivity to 5-6 virulent H. pylori proteins), increasing intake of red meat, heme iron, and sodium increased risk (comparing highest tertile to lowest: ORs [95% confidence interval {CI}]: 1.85 [1.01-3.40]; 1.95 [1.06-3.57]; and 1.76 [0.91-3.43], respectively) while increasing intake of fruit decreased gastric cancer risk (comparing highest tertile of intake to lowest: OR [95% CI]: 0.52 [0.28-0.94]). No associations of diet with risk were found among individuals infected with low-risk H. pylori (P for interaction for red meat and sodium: 0.02 and 0.01, respectively). In this population with over 90% prevalence of CagA-positive H. pylori infection, categorizing individuals using H. pylori multiplex serology may identify individuals for whom a diet intervention may be effective.
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Affiliation(s)
- Meira Epplein
- a Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center , Vanderbilt University School of Medicine , Nashville , Tennessee , USA
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Predicting the probability of mortality of gastric cancer patients using decision tree. Ir J Med Sci 2014; 184:277-84. [PMID: 24626962 DOI: 10.1007/s11845-014-1100-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Accepted: 02/26/2014] [Indexed: 12/26/2022]
Abstract
BACKGROUND Gastric cancer is the fourth most common cancer worldwide. This reason motivated us to investigate and introduce gastric cancer risk factors utilizing statistical methods. AIM The aim of this study was to identify the most important factors influencing the mortality of patients who suffer from gastric cancer disease and to introduce a classification approach according to decision tree model for predicting the probability of mortality from this disease. METHODS Data on 216 patients with gastric cancer, who were registered in Taleghani hospital in Tehran,Iran, were analyzed. At first, patients were divided into two groups: the dead and alive. Then, to fit decision tree model to our data, we randomly selected 20% of dataset to the test sample and remaining dataset considered as the training sample. Finally, the validity of the model examined with sensitivity, specificity, diagnosis accuracy and the area under the receiver operating characteristic curve. The CART version 6.0 and SPSS version 19.0 softwares were used for the analysis of the data. RESULTS Diabetes, ethnicity, tobacco, tumor size, surgery, pathologic stage, age at diagnosis, exposure to chemical weapons and alcohol consumption were determined as effective factors on mortality of gastric cancer. The sensitivity, specificity and accuracy of decision tree were 0.72, 0.75 and 0.74 respectively. CONCLUSIONS The indices of sensitivity, specificity and accuracy represented that the decision tree model has acceptable accuracy to prediction the probability of mortality in gastric cancer patients. So a simple decision tree consisted of factors affecting on mortality of gastric cancer may help clinicians as a reliable and practical tool to predict the probability of mortality in these patients.
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Wang Q, Chen Y, Wang X, Gong G, Li G, Li C. Consumption of fruit, but not vegetables, may reduce risk of gastric cancer: results from a meta-analysis of cohort studies. Eur J Cancer 2014; 50:1498-509. [PMID: 24613128 DOI: 10.1016/j.ejca.2014.02.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/08/2014] [Accepted: 02/10/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Quantification of the association between consumption of fruit and vegetables and risk of gastric cancer (GC) is controversial. We aimed to conduct a meta-analysis of cohort studies to evaluate the associations. METHODS Eligible studies published up to 31st August 2013 were retrieved via both computer searches of PubMed and EMBASE and a manual review of references. Random-effects models were used to calculate summary relative risk (SRR). Heterogeneity among studies was assessed using Cochran's Q and I(2) statistics. RESULTS A total of 17 articles (24 studies), were included in this meta-analysis. There were >2.4 million individuals (6632 GC events) with a median follow-up of 10years. Based on the high versus low analysis, consumption of fruit, but not vegetables, may reduce risk of gastric cancer (fruit: SRR=0.90, 95% confidence interval (CI): 0.83-0.98, Pheterogeneity=0.450; vegetable: SRR=0.96, 95% CI: 0.88-1.06, Pheterogeneity=0.150). Meta regression analysis suggested that outcome (incidence versus mortality) and study quality (high versus low) contributed significantly to heterogeneity. The same results were also shown in the linear dose-response analysis (per 100-g/day) (fruit: SRR=0.95, 95% CI: 0.91-0.99; vegetable: SRR=0.96, 95% CI: 0.91-1.01). Significant inverse associations emerged in non-linear models for consumption of fruit (Pnon-linearity=0.04), but not for consumption of vegetables (Pnon-linearity=0.551). CONCLUSIONS Findings from this meta-analysis indicate a significant protective effect for the consumption of fruit on GC risk, but not for the consumption of vegetables.
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Affiliation(s)
- Qingbing Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Shanghai Institute of Medical Imaging, Shanghai 200032, PR China
| | - Yi Chen
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Shanghai Institute of Medical Imaging, Shanghai 200032, PR China.
| | - Xiaolin Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Shanghai Institute of Medical Imaging, Shanghai 200032, PR China
| | - Gaoquan Gong
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Shanghai Institute of Medical Imaging, Shanghai 200032, PR China
| | - Guoping Li
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Changyu Li
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
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Li P, Zhang H, Chen J, Shi Y, Cai J, Yang J, Wu Y. Association between dietary antioxidant vitamins intake/blood level and risk of gastric cancer. Int J Cancer 2014; 135:1444-53. [PMID: 24510802 DOI: 10.1002/ijc.28777] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 01/27/2014] [Indexed: 12/31/2022]
Abstract
We aimed to systematically evaluate the association between dietary intake/blood levels of antioxidant vitamins (vitamin C, vitamin E, β-carotene, and α-carotene) and gastric cancer risk. Systematic literature searches were conducted until April 2013 in Pubmed and Embase to identify relevant studies. Either a fixed- or a random-effects model was adopted to estimate overall odds ratios (ORs). Dose-response, meta-regression, subgroup, and publication bias analyses were applied. Forty articles were finally included in the present study. Higher dietary intake of vitamin C, vitamin E, β-carotene, and α-carotene was inversely associated with gastric cancer risk (for vitamin C, pooled OR=0.58, 95% CI 0.51-0.65; for vitamin E, pooled OR=0.65, 95% CI 0.57-0.74; for β-carotene, pooled OR=0.59, 95% CI 0.49-0.70; for α-carotene, pooled OR=0.69, 95% CI 0.52-0.93). Subgroup analyses suggested the effects of these antioxidant vitamins were different in gastric cancer subtypes. As indicated by dose-response analysis, a 100 mg/day increment of vitamin C intake conferred an OR of 0.78 (95% CI 0.67-0.90); a 15 mg/day increment of vitamin E intake conferred an OR of 0.79 (95% CI 0.66-0.94); and a 5 mg/day increment in β-carotene intake conferred an OR of 0.80 (95% CI 0.60-1.04). No significant association was observed between blood vitamin C, α-tocopherol, γ- tocopherol, β-carotene and α-carotene levels and gastric cancer risk. In conclusion, dietary intake of vitamin C, vitamin E, β-carotene and α-carotene was inversely associated with gastric cancer risk while no such association was observed for blood levels of these antioxidant vitamins, thus the results should be interpreted cautiously.
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Affiliation(s)
- Peiwei Li
- Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou, China
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Wang XQ, Yan H, Terry PD, Wang JS, Cheng L, Wu WA, Hu SK. Interaction between dietary factors and Helicobacter pylori infection in noncardia gastric cancer: a population-based case-control study in China. J Am Coll Nutr 2013; 31:375-84. [PMID: 23529995 DOI: 10.1080/07315724.2012.10720447] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The aim of this study was to investigate the relationships among Helicobacter pylori, dietary factors, and the risk of noncardia gastric cancer in a hospital-based case-control study in China. METHODS A case-control study of noncardia gastric cancer was performed at 3 hospitals in Xi'an, China, between September 2008 and July 2010. Participants were 257 men and women with histologically diagnosed primary noncardia gastric cancer and 514 sex- and age-matched (± 5 years) control subjects selected from the communities where the cases were living when diagnosed. A questionnaire was used to obtain information regarding potential risk factors, including diet, and blood samples were obtained to examine H pylori infection status. RESULTS Positive H pylori status (odds ratio [OR], 3.2; 95% confidence interval [CI], 0.8-5.9) and high consumption of pickled foods (OR, 27.1; 95%, 8.7-79.1) appeared to increase the risk of noncardia gastric cancer, whereas high consumption of vegetables (OR, 0.3; 95% CI, 0.1-0.89), fruits (OR, 0.2; 95% CI, 0.09-0.81), and soya products (OR, 0.04; 95% CI, 0.01-0.3) appeared to decrease the risk. Consumption of meat, cereals, tubers, eggs, oils, nuts, fish, fresh fruit, and red meat was not clearly associated with risk. Effect modification was observed, such that a relatively high consumption of fruit and vegetables appeared to attenuate the association of H pylori with risk of noncardia gastric cancer (p < 0.05). CONCLUSIONS Our data suggest that noncardia gastric cancer is highly preventable through modifications in dietary habits. Given the prevalence of H pylori infection worldwide, information regarding potential interaction between H pylori and lifestyle factors in gastric cancer development, including the dietary factors examined in our study, may prove valuable in future efforts at prevention.
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Affiliation(s)
- Xiao-Qin Wang
- Department of Statistics and Epidemiology, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi Province, China.
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Shakeri R, Malekzadeh R, Etemadi A, Nasrollahzadeh D, Aghcheli K, Sotoudeh M, Islami F, Pourshams A, Pawlita M, Boffetta P, Dawsey SM, Abnet CC, Kamangar F. Opium: an emerging risk factor for gastric adenocarcinoma. Int J Cancer 2013; 133:455-61. [PMID: 23319416 PMCID: PMC3644384 DOI: 10.1002/ijc.28018] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/05/2012] [Accepted: 12/06/2012] [Indexed: 12/11/2022]
Abstract
Opium use has been associated with higher risk of cancers of the esophagus, bladder, larynx, and lung; however, no previous study has examined its association with gastric cancer. There is also little information on the associations between hookah (water pipe) smoking or the chewing of tobacco products and the risk of gastric cancer. In a case-control study in Golestan Province of Iran, we enrolled 309 cases of gastric adenocarcinoma (118 noncardia, 161 cardia and 30 mixed-location adenocarcinomas) and 613 matched controls. Detailed information on long-term use of opium, tobacco products and other covariates were collected using structured and validated lifestyle and food frequency questionnaires. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were obtained using conditional logistic regression models. Opium use was associated with an increased risk of gastric adenocarcinoma, with an adjusted OR (95% CI) of 3.1 (1.9-5.1), and this increased risk was apparent for both anatomic subsites (cardia and noncardia). There was a dose-response effect, and individuals with the highest cumulative opium use had the strongest association (OR: 4.5; 95% CI: 2.3-8.5). We did not find a statistically significant association between the use of any of the tobacco products and risk of gastric adenocarcinoma, overall or by anatomic subsite. We showed, for the first time, an association between opium use and gastric adenocarcinoma. Given that opium use is a traditional practice in many parts of the world, these results are of public health significance.
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Affiliation(s)
- Ramin Shakeri
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,USA
| | - Reza Malekzadeh
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Etemadi
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,USA
| | - Dariush Nasrollahzadeh
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Karim Aghcheli
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Golestan Research Center of Gastroenterology and Hepatology, Gorgan University of Medical Sciences, Gorgan, Iran
| | - Masoud Sotoudeh
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Farhad Islami
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Institute for Translational Epidemiology and Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, USA
| | - Akram Pourshams
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Michael Pawlita
- Genome Modifications and Carcinogenesis Division, Infection and Cancer Program, German Cancer Research Center, Heidelberg, Germany
| | - Paolo Boffetta
- Institute for Translational Epidemiology and Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, USA
| | - Sanford M. Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,USA
| | - Christian C. Abnet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,USA
| | - Farin Kamangar
- Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,USA
- Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, MD
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Wu C, Han L, Riaz H, Wang S, Cai K, Yang L. The chemopreventive effect of β-cryptoxanthin from mandarin on human stomach cells (BGC-823). Food Chem 2013. [DOI: 10.1016/j.foodchem.2012.09.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang T, Yang X, Wang X, Wang Y, Song Z. The role of tomato products and lycopene in the prevention of gastric cancer: a meta-analysis of epidemiologic studies. Med Hypotheses 2013; 80:383-8. [PMID: 23352874 DOI: 10.1016/j.mehy.2013.01.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/03/2013] [Accepted: 01/05/2013] [Indexed: 01/28/2023]
Abstract
BACKGROUND Gastric cancer is the second most common cause of death from cancer worldwide. Epidemiologic studies have examined the possible association between tomato products consumption and gastric cancer, but the relationship between tomato products and the risk of gastric cancer is controversial. We performed a meta-analysis of cohort and case-control studies to analyze this association. METHODS We systematically searched MEDLINE and EMBASE and contacted authors to identify potential studies published from January 1966 to June 2012. We pooled the relative risks from individual studies using a random-effects model and performed heterogeneity and publication bias analyses. RESULTS Twenty-one studies were eligible for our inclusion criteria, in a pooled analysis of all studies, consumption of large amounts of tomato products (in a comparison of the highest and lowest consumption groups) reduced the risk for gastric cancer (odds ratio, 0.73; 95% confidence interval, 0.60-0.90). The pooled OR of lycopene consumption and serum lycopene was 0.88 (95% CI=0.67-1.16) and 0.79 (95% CI=0.59-1.07), respectively. CONCLUSIONS Consumption of large amounts of tomato products is associated with a reduced risk of gastric cancer. However, because of potential confounding factors and exposure misclassification, further studies are required to establish these findings.
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Affiliation(s)
- Tingsong Yang
- Department of Hepatobiliary & Pancreatic Surgery, Shanghai Tenth Peoples' Hospital, Tongji University, Shanghai, PR China.
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Taborda AG, Prolla JC. Alimentary factors in the development of gastric intestinal metaplasia in functional dyspeptic patients. ARQUIVOS DE GASTROENTEROLOGIA 2012; 49:208-13. [DOI: 10.1590/s0004-28032012000300008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Indexed: 12/26/2022]
Abstract
CONTEXT: Intestinal metaplasia of the stomach is a lesion in which metaplasia of gastric epithelial cells occurs for an intestinal phenotype. Gastric intestinal metaplasia is a lesion associated with an increase in the risk of gastric carcinoma development. Epidemiologic studies indicate a relation between dietary habits and stomach cancer development, some habits increasing the risk for it, and others have a protective effect, suggesting that antioxidants, such as vitamins A, C, and E, decrease the risk of this type of cancer. The relationship of these alimentary factors and intestinal metaplasia is unknown. METHODS: It is a case-control, observational study in which 320 patients with functional dyspepsia, divided in two groups, were assessed. The case I group (individuals with intestinal metaplasia) had their dietary pattern compared to that of the control group, constituted of individuals similar to those in the case group but without intestinal metaplasia, through a food frequency questionnaire. RESULTS: The analysis of the dietary pattern of functional dyspeptic patients with intestinal metaplasia, and its comparison with those without intestinal metaplasia, showed a higher frequency of canned and smoked foods consumption in the first group and, on the other hand, a higher consumption of fruits and vegetables in patients without intestinal metaplasia. No effect of salt consumption was detected. CONCLUSIONS: The results obtained in this study suggest changes in the diet, with a decrease in the consumption of smoked and canned foods, and an increase in the consumption of fruits and vegetables, can lead to a diminution of gastric intestinal metaplasia cases.
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Chen J, Miao L, Jin G, Ren C, Ke Q, Qian Y, Dong M, Li H, Zhang Q, Ding Y, Yan Z, Wang J, Liu Z, Hu Z, Xu Y, Ji G, Shen H. TGFBR1 tagging SNPs and gastric cancer susceptibility: a two-stage case-control study in Chinese population. Mol Carcinog 2012; 53:109-16. [PMID: 22911926 DOI: 10.1002/mc.21954] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 07/16/2012] [Accepted: 08/01/2012] [Indexed: 01/08/2023]
Abstract
The transforming growth factor (TGF)-β is a potent growth inhibitor primarily responsible for cell growth, differentiation, and apoptosis, and frequently perturbed during development of tumors, including gastric cancer. TGF-β receptor type I (TGFβR1) may be a modifier of cancer risk by constitutively decreasing the TGF-β inhibitory signals during early tumorigenesis and increasing the TGF-β signals in tumor progression. In this study, we hypothesized that genetic variants of TGFBR1 may influence the risk of gastric cancer. We conducted a two-stage case-control study of gastric cancer, including 650 cases and 683 controls in the first stage and 484 cases and 348 controls in the second stage, and genotyped five tagging single nucleotide polymorphisms (SNPs) to represent common variants in the whole TGFBR1 gene. In the first stage, two SNPs rs6478974 and rs10512263 were found to be potentially associated with risk of gastric cancer (P = 3.35 × 10(-3) for rs6478974 AT vs. TT and P = 0.033 for rs10512263 CT vs. TT), which were further confirmed in the second stage with similar effects (P = 0.144 and 0.049, respectively). After combining the two stages, we found that these two SNPs were associated with a significantly increased risk of gastric cancer in dominant models [adjusted odds ratio (OR) = 1.36, 95% confidence interval (CI): 1.14-1.63 for rs6478974 AT/AA vs. TT; adjusted OR = 1.26, 95% CI: 1.05-1.50 for rs10512263 CT/CC vs. TT] or additive model (adjusted OR = 1.23, 95% CI: 1.08-1.40 for rs6478974). These findings indicate that TGFBR1 polymorphisms may be implicated with the development of gastric cancer in Han-Chinese population.
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Affiliation(s)
- Jianjian Chen
- Institute of Digestive Endoscopy and Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Health Promotion, Wuxi Center for Disease Prevention and Control, Wuxi, China
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Serafini M, Jakszyn P, Luján-Barroso L, Agudo A, Bas Bueno-de-Mesquita H, van Duijnhoven FJB, Jenab M, Navarro C, Palli D, Boeing H, Wallström P, Regnér S, Numans ME, Carneiro F, Boutron-Ruault MC, Clavel-Chapelon F, Morois S, Grioni S, Panico S, Tumino R, Sacerdote C, Ramon Quirós J, Molina-Montes E, Huerta Castaño JM, Barricarte A, Amiano P, Khaw KT, Wareham N, Allen NE, Key TJ, Jeurnink SM, Peeters PHM, Bamia C, Valanou E, Trichopoulou A, Kaaks R, Lukanova A, Bergmann MM, Lindkvist B, Stenling R, Johansson I, Dahm CC, Overvad K, Jensen M, Olsen A, Tjonneland A, Lund E, Rinaldi S, Michaud D, Mouw T, Riboli E, González CA. Dietary total antioxidant capacity and gastric cancer risk in the European prospective investigation into cancer and nutrition study. Int J Cancer 2012; 131:E544-54. [PMID: 22072493 DOI: 10.1002/ijc.27347] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 07/22/2011] [Indexed: 12/13/2022]
Abstract
A high intake of dietary antioxidant compounds has been hypothesized to be an appropriate strategy to reduce gastric cancer (GC) development. We investigated the effect of dietary total antioxidant capacity (TAC) in relation to GC in the European Prospective Investigation into Cancer (EPIC) study including 23 centers in 10 European countries. A total of 521,457 subjects (153,447 men) aged mostly 35-70 years old, were recruited largely between 1992 and 1998. Ferric reducing antioxidant potential (FRAP) and total radical-trapping antioxidant parameter (TRAP), measuring reducing and chain-breaking antioxidant capacity were used to measure dietary TAC from plant foods. Dietary antioxidant intake is associated with a reduction in the risk of GC for both FRAP (adjusted HR 0.66; 95%CI (0.46-0.95) and TRAP (adjusted HR 0.61; 95%CI (0.43-0.87) (highest vs. lowest quintile). The association was observed for both cardia and noncardia cancers. A clear effect was observed in smokers with a significant reduction in GC risk for the fifth quintile of intake for both assays (highest vs. lowest quintile: adjusted HR 0.41; 95%CI (0.22-0.76) p for trend <0.001 for FRAP; adjusted HR 0.52; 95%CI (0.28-0.97) p for trend <0.001 for TRAP) but not in nonsmokers. In former smokers, the association with FRAP intake was statistically significant (highest vs. lowest quintile: adjusted HR 0.4; 95%CI (0.21-0.75) p < 0.05); no association was observed for TRAP. Dietary antioxidant capacity intake from different sources of plant foods is associated with a reduction in the risk of GC.
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Affiliation(s)
- Mauro Serafini
- Istituto Nazionale di Ricerca per gli Alimenti e la Nutrizione, Rome, Italy
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Gonzalez CA, Lujan-Barroso L, Bueno-de-Mesquita HB, Jenab M, Duell EJ, Agudo A, Tjønneland A, Boutron-Ruault MC, Clavel-Chapelon F, Touillaud M, Teucher B, Kaaks R, Boeing H, Steffen A, Trichopoulou A, Roukos D, Karapetyan T, Palli D, Tagliabue G, Mattiello A, Tumino R, Ricceri F, Siersema PD, Numans ME, Peeters PPH, Parr CL, Skeie G, Lund E, Quirós JR, Sánchez-Cantalejo E, Navarro C, Barricarte A, Dorronsoro M, Ehrnström R, Regner S, Khaw KT, Wareham N, Key TJ, Crowe FL, Blaker H, Romieu I, Riboli E. Fruit and vegetable intake and the risk of gastric adenocarcinoma: A reanalysis of the european prospective investigation into cancer and nutrition (EPIC-EURGAST) study after a longer follow-up. Int J Cancer 2012; 131:2910-9. [PMID: 22473701 DOI: 10.1002/ijc.27565] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 01/05/2012] [Indexed: 12/13/2022]
Affiliation(s)
- Carlos A Gonzalez
- Unit of Nutrition, Environment and Cancer, Programme of Epidemiological Research, Catalan Institute of Oncology (ICO-IDIBELL), Barcelona, Spain.
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Dietary vitamin A intake and incidence of gastric cancer in a general Japanese population: the Hisayama Study. Gastric Cancer 2012; 15:162-9. [PMID: 21948483 DOI: 10.1007/s10120-011-0092-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Accepted: 08/19/2011] [Indexed: 02/07/2023]
Abstract
BACKGROUND The results of prospective studies examining the association between dietary vitamin A intake and the risk of gastric cancer have often been conflicting. The objective of this study was to investigate this issue in a general Japanese population. METHODS A total of 2,467 community-dwelling Japanese subjects aged 40 years or older were followed up prospectively for 14 years. Dietary vitamin A intake was estimated using a semiquantitative food frequency method. RESULTS During the follow-up period, gastric cancer developed in 93 subjects. The age- and sex-adjusted incidence of gastric cancer rose progressively with increasing levels of dietary vitamin A intake: at 2.2, 3.0, 3.8, and 4.5 per 1,000 person-years for quartile groups defined by dietary vitamin A intake levels of <639, 639-837, 838-1,061, and >1,061 μg retinol equivalents (RE)/day, respectively (P for trend <0.01). The risk of gastric cancer was significantly higher in the fourth quartile than in the first one even after multivariate adjustment [hazard ratio (HR) = 1.47, 95% confidence interval (CI) = 0.70-3.09, P = 0.30 for the second quartile; HR = 1.85, 95% CI = 0.82-4.18, P = 0.14 for the third quartile; HR = 2.96, 95% CI = 1.12-7.80, P = 0.03 for the fourth quartile]. Comparable effects of vitamin A intake were observed irrespective of the location or histological type of gastric cancer. The HR for gastric cancer increased significantly only in subjects with a combination of high vitamin A intake (>1,061 μg RE/day) and Helicobacter pylori infection. CONCLUSIONS Our findings suggest that dietary vitamin A intake is clearly associated with the risk of gastric cancer in the general Japanese population.
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Dikken JL, van de Velde CJ, Coit DG, Shah MA, Verheij M, Cats A. Treatment of resectable gastric cancer. Therap Adv Gastroenterol 2012; 5:49-69. [PMID: 22282708 PMCID: PMC3263979 DOI: 10.1177/1756283x11410771] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Stomach cancer is one of the most common cancers worldwide, despite its declining overall incidence. Although there are differences in incidence, etiology and pathological factors, most studies do not separately analyze cardia and noncardia gastric cancer. Surgery is the only potentially curative treatment for advanced, resectable gastric cancer, but locoregional relapse rate is high with a consequently poor prognosis. To improve survival, several preoperative and postoperative treatment strategies have been investigated. Whereas perioperative chemotherapy and postoperative chemoradiation (CRT) are considered standard therapy in the Western world, in Asia postoperative monochemotherapy with S-1 is often used. Several other therapeutic options, although generally not accepted as standard treatment, are postoperative combination chemotherapy, hyperthermic intraperitoneal chemotherapy and preoperative radiotherapy and CRT. Postoperative combination chemotherapy does show a statistically significant but clinically equivocal survival advantage in several meta-analyses. Hyperthermic intraperitoneal chemotherapy is mainly performed in Asia and is associated with a higher postoperative complication rate. Based on the currently available data, the use of postoperative radiotherapy alone and the use of intraoperative radiotherapy should not be advised in the treatment of resectable gastric cancer. Western randomized trials on gastric cancer are often hampered by slow or incomplete accrual. Reduction of toxicity for preoperative and especially postoperative treatment is essential for the ongoing improvement of gastric cancer care.
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Affiliation(s)
- Johan L. Dikken
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands and Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, USA
| | | | - Daniel G. Coit
- Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, USA
| | - Manish A. Shah
- Department of Medical Oncology, Memorial Sloan-Kettering Cancer Center, New York, USA
| | - Marcel Verheij
- Department of Radiotherapy, The Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Annemieke Cats
- Department of Gastroenterology and Hepatology, The Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, P.O. Box 90203, 1006 BE Amsterdam, The Netherlands
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Chen T, Yan F, Qian J, Guo M, Zhang H, Tang X, Chen F, Stoner GD, Wang X. Randomized phase II trial of lyophilized strawberries in patients with dysplastic precancerous lesions of the esophagus. Cancer Prev Res (Phila) 2011; 5:41-50. [PMID: 22135048 DOI: 10.1158/1940-6207.capr-11-0469] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dysplasia is a histologic precursor of esophageal squamous cell carcinoma (SCC). We previously showed that dietary freeze-dried, or lyophilized, strawberry powder inhibits N-nitrosomethylbenzylamine-induced SCC in the rat esophagus. On the basis of this observation, we conducted a randomized (noncomparative) phase II trial in China to investigate the effects of two doses of freeze-dried strawberries in patients with esophageal dysplastic lesions in a high-risk area for esophageal cancer. We randomly assigned 75 patients identified by endoscopy to have dysplastic esophageal premalignant lesions to receive freeze-dried strawberry powder at either 30 g/d (37 patients) or 60 g/d (38 patients) for six months; the powder was mixed with water and drunk. After six months, we assessed the changes in histologic grade of these lesions (primary endpoint) in a blinded fashion. The dose of 30 g/d, did not significantly affect histology or any other measured parameter. The dose of 60 g/d, however, reduced the histologic grade of dysplastic premalignant lesions in 29 (80.6%) of the 36 patients at this dose who were evaluated for histology (P < 0.0001). The strawberry powder was well tolerated, with no toxic effects or serious adverse events. Strawberries (60 g/d) also reduced protein expression levels of inducible nitric oxide synthase (iNOS) by 79.5% (P < 0.001), cyclooxygenase-2 (COX-2) by 62.9% (P < 0.001), phospho-nuclear factor kappa B (NFκB)-p65 (pNFκB-p65) by 62.6% (P < 0.001), and phospho-S6 (pS6) by 73.2% (P < 0.001). Freeze-dried strawberries (60 g/d) also significantly inhibited the Ki-67 labeling index by 37.9% (P = 0.023). Our present results indicate the potential of freeze-dried strawberry powder for preventing human esophageal cancer, supporting further clinical testing of this natural agent in this setting.
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Affiliation(s)
- Tong Chen
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University, 410 West 12 Avenue, Columbus, OH 43210, USA.
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Abstract
AbstractThe association between micronutrients and gastric cancer is still unclear. The aim of this study is to determine the relationship between dietary intake of micronutrients and risk for gastric cancer. We used data from hospital-based case control study conducted at Clinical Centre Nis (Serbia) from 2005 and 2006. Patients (n=102) with first histologically confirmed gastric cancer and matched non-cancer patients (controls, n=204) were interviewed using structured questionnaire and FFQ (Food frequency questionnaire). Multivariate logistic regression analysis showed a significant positive association between gastric cancer and dietary intake of sodium (OR=6.22; 95%CI 1.99–7.86), but a significant negative association between potassium (OR 0.01; 95%CI 0.00–0.08), iron (OR 0.05; 95%CI 0.01–0.56), vitamin C (OR 0.05; 95%CI 0.01–0.38), vitamin E (OR 0.04; 95%CI 0.01–0.29) and niacin (OR 0.07; 95%CI 0.00–0.38) dietary intake. Intake of phosphorus, calcium, magnesium, zinc, retinol, β carotene, tiamin, vitamin B6, and folic acid was not significantly related to gastric cancer risk.In conclusion, we found that a dietary pattern of high consumption of antioxidants (vitamin C, vitamin E, niacin), iron and potassium and low consumption of foods that are sources of sodium, decreased risk for gastric cancer. Our results require confirmation in future studies.
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Steevens J, Schouten LJ, Goldbohm RA, van den Brandt PA. Vegetables and fruits consumption and risk of esophageal and gastric cancer subtypes in the Netherlands Cohort Study. Int J Cancer 2011; 129:2681-93. [PMID: 21960262 DOI: 10.1002/ijc.25928] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Accepted: 12/20/2010] [Indexed: 01/17/2023]
Abstract
Prospective epidemiologic data on vegetables and fruits consumption and risk of subtypes of esophageal and gastric cancer are sparse. We studied the association between vegetables and fruits consumption and risk of esophageal squamous cell carcinoma (ESCC), esophageal adenocarcinoma (EAC), gastric cardia adenocarcinoma (GCA) and gastric noncardia adenocarcinoma (GNCA) in the Netherlands Cohort Study. In 1986, 120,852 Dutch men and women aged 55-69 filled out a questionnaire on diet and other cancer risk factors. After 16.3 years of follow-up, 101 ESCC, 144 EAC, 156 GCA, 460 GNCA cases and 4,035 subcohort members were available for case-cohort analysis using Cox proportional hazards models. Multivariable adjusted incidence rate ratios (RRs) were generally below unity. Total vegetable consumption was nonsignificantly inversely associated with EAC and ESCC risk, but not with GCA and GNCA risk. Significant inverse associations were observed for raw vegetables and EAC risk [RR per 25 g/day: 0.81, 95% confidence interval (CI) 0.68-0.98], and Brassica vegetables and GCA risk (RR per 25 g/day: 0.72, 95% CI 0.54-0.95). Total fruit consumption was associated with a nonsignificantly decreased EAC risk. Citrus fruits were inversely associated with EAC and GCA risk (RRs for highest vs. lowest intake: 0.55, 95% CI 0.31-0.98 and 0.38, 95% CI 0.21-0.69, respectively). Specifically for current smokers, vegetables and possibly also fruits intake was inversely associated with ESCC and EAC risk. Consumption of (specific groups of) vegetables and fruits may protect against subtypes of esophageal and gastric cancer.
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Affiliation(s)
- Jessie Steevens
- Department of Epidemiology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre +, Maastricht, The Netherlands
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De Ceglie A, Fisher DA, Filiberti R, Blanchi S, Conio M. Barrett's esophagus, esophageal and esophagogastric junction adenocarcinomas: the role of diet. Clin Res Hepatol Gastroenterol 2011; 35:7-16. [PMID: 20970272 DOI: 10.1016/j.gcb.2010.08.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 08/20/2010] [Accepted: 08/27/2010] [Indexed: 02/04/2023]
Abstract
Identification of modifiable risk factors is an attractive approach to primary prevention of esophageal adenocarcinoma (EAC) and esophagogastric junction adenocarcinoma (EGJAC). We conducted a review of the literature to investigate the association between specific dietary components and the risk of Barrett’s esophagus (BE), EAC and EGJAC, supposing diet might be a risk factor for these tumors. Consumption of meat and high-fat meals has been found positively associated with EAC and EGJAC. An inverse association with increased intake of fruit, vegetables and antioxidants has been reported but this association was not consistent across all studies reviewed. Few studies have examined the association between diet and BE. Additional research is needed to confirm the aforementioned association and clarify the mechanisms by which dietary components affect the risk of developing EAC and EGJAC. Future studies could advance our knowledge by emphasizing prospective designs to reduce recall bias, by using validated dietary intake questionnaires and biological measures and by considering important confounders such as gastro-esophageal reflux disease (GERD) symptoms, tobacco and alcohol use, biometrics, physical activity, and socioeconomic factors.
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Affiliation(s)
- A De Ceglie
- Department of Gastroenterology and Digestive Endoscopy, Cancer Institute Giovanni Paolo II, Bari, Italy
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Epplein M, Shu XO, Xiang YB, Chow WH, Yang G, Li HL, Ji BT, Cai H, Gao YT, Zheng W. Fruit and vegetable consumption and risk of distal gastric cancer in the Shanghai Women's and Men's Health studies. Am J Epidemiol 2010; 172:397-406. [PMID: 20647333 DOI: 10.1093/aje/kwq144] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Results from case-control and cohort studies of the association between fruit and vegetable consumption and gastric cancer risk have been inconsistent. Cases for the current study consisted of incident distal gastric cancers identified between 1996 and 2007 among members of the Shanghai Women's Health Study (n = 206) and the Shanghai Men's Health Study (n = 132). Intakes of fruits, vegetables, and select micronutrients were assessed on the basis of validated food frequency questionnaires. Multivariate-adjusted hazards ratios and 95% confidence intervals were calculated by Cox proportional hazards regression. For women, no associations were found between gastric cancer risk and the highest intake of fruits (hazard ratio (HR) = 1.02, 95% confidence interval (CI): 0.68, 1.54; P(trend) = 0.87) or vegetables (HR = 0.89, 95% CI: 0.60, 1.31; P(trend) = 0.32). For men, increased fruit intake was associated with decreased risk of distal gastric cancer (for the highest quartile of intake, HR = 0.50, 95% CI: 0.29, 0.84; P(trend) = 0.004), but no association was seen with increased intake of vegetables (HR = 1.00, 95% CI: 0.59, 1.68; P(trend) = 0.87). The inverse association with fruit intake for men was more evident among ever smokers (P(trend) = 0.001) than never smokers (P(trend) = 0.67). No associations between dietary intakes of select antioxidant micronutrients were seen for men or women. Fruit intake is inversely associated with distal gastric cancer risk among men in Shanghai, China.
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Affiliation(s)
- Meira Epplein
- Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, 2525 West End Avenue, Sixth Floor, Nashville, TN 37203, USA.
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Kopec RE, Riedl KM, Harrison EH, Curley RW, Hruszkewycz DP, Clinton SK, Schwartz SJ. Identification and quantification of apo-lycopenals in fruits, vegetables, and human plasma. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:3290-6. [PMID: 20178389 PMCID: PMC2851402 DOI: 10.1021/jf100415z] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Research has suggested that lycopene may be metabolized by eccentric cleavage, catalyzed by beta-carotene oxygenase 2, resulting in the generation of apo-lycopenals. Apo-6'-lycopenal and apo-8'-lycopenal have been reported previously in raw tomato. We now show that several other apo-lycopenals are also present in raw and processed foods, as well as in human plasma. Apo-lycopenal standards were prepared by in vitro oxidation of lycopene, and a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method using atmospheric pressure chemical ionization in negative mode was developed to separate and detect the apo-6'-, apo-8'-, apo-10'-, apo-12'-, apo-14'-, and apo-15'-lycopenal products formed in the reaction. Hexane/acetone extracts of raw tomato, red grapefruit, watermelon, and processed tomato products were analyzed, as well as plasma of individuals who had consumed tomato juice for 8 weeks. Apo-6'-, apo-8'-, apo-10'-, apo-12'-, and apo-14'-lycopenals were detected and quantified in all food products tested, as well as plasma. The sum of apo-lycopenals was 6.5 microg/100 g Roma tomato, 73.4 microg/100 g tomato paste, and 1.9 nmol/L plasma. We conclude that several apo-lycopenals, in addition to apo-6'- and -8'-lycopenal, are present in lycopene-containing foods. In addition, the presence of apo-lycopenals in plasma may derive from the absorption of apo-lycopenals directly from food and/or human metabolism.
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Affiliation(s)
- Rachel E. Kopec
- Department of Food Science & Technology, 110 Parker Building, 2015 Fyffe Ct. The Ohio State University, Columbus, Ohio 43210
- Department of Human Nutrition, 350 Campbell Hall, 1787 Neil Ave. The Ohio State University, Columbus, Ohio 43210
| | - Ken M. Riedl
- Department of Food Science & Technology, 110 Parker Building, 2015 Fyffe Ct. The Ohio State University, Columbus, Ohio 43210
| | - Earl H. Harrison
- Department of Human Nutrition, 350 Campbell Hall, 1787 Neil Ave. The Ohio State University, Columbus, Ohio 43210
| | - Robert W. Curley
- College of Pharmacy, 217 Parks Hall, 500 West 12th Ave. The Ohio State University, Columbus, Ohio 43210
| | - Damian P. Hruszkewycz
- College of Pharmacy, 217 Parks Hall, 500 West 12th Ave. The Ohio State University, Columbus, Ohio 43210
| | - Steven K. Clinton
- Division of Medical Oncology, Department of Internal Medicine, The James Cancer Hospital and Solove Research Institute, A456 Starling Loving Hall, 320 West 10th Ave. The Ohio State University, Columbus, Ohio 43210
| | - Steven J. Schwartz
- Department of Food Science & Technology, 110 Parker Building, 2015 Fyffe Ct. The Ohio State University, Columbus, Ohio 43210
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