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Lu VM, Niazi TN. The epidemiologic associations of food availability with national incidence and mortality rates of pediatric central nervous system tumors. Childs Nerv Syst 2024; 40:445-451. [PMID: 37606833 DOI: 10.1007/s00381-023-06134-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND The epidemiology of central nervous system (CNS) tumors in pediatric patients worldwide continues to be defined. To date, there has been no evaluation of how national food availability may associate with the incidence and mortality of these tumors. Correspondingly, the aim of this study was to define if such associations exist. METHODS The most updated incidence and mortality rates of CNS tumors in pediatric patients were abstracted by country from the Global Burden of Disease database. Data regarding food availability parameters were identified and abstracted from the Food Systems Dashboard database. Associations were tested using univariate and multivariate regression analyses. RESULTS There were sufficient data in a total of 175 countries worldwide describing the required outcomes. Median incidence and mortality rates across these countries were 1.63 per 100,000 and 0.80 per 100,000, respectively. Higher incidence rates of pediatric CNS tumors were statistically associated with lower availability of fruit and vegetables (P = 0.02), higher average protein supply (P < 0.01), lower share of dietary energy from cereal and roots (P < 0.01), lower supply of meat (P < 0.01), lower supply of nuts and seeds (P < 0.01), lower supply of vegetable oils (P < 0.01), and higher supply of vegetables (P < 0.01). Higher mortality rates due to pediatric CNS tumors were statistically associated with lower availability of fruit and vegetables (P = 0.048), lower supply of fish (P = 0.046), and lower supply of nuts and seeds (P = 0.04). When categorizing countries based on income status, there was a decrease in significant associations found more pronounced in low-middle income countries. CONCLUSIONS There are many novel associations between national food availability and the incidence and mortality rates of pediatric CNS tumors across the world, which may be more pronounced and divergent in low-middle income countries. A greater understanding is needed to identify what specific components of the significant parameters influence these trends and how public health efforts may best address these associations to improve overall outcomes.
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Affiliation(s)
- Victor M Lu
- Department of Neurological Surgery, University of Miami, Jackson Memorial Hospital, Miami, FL, USA.
- Department of Neurological Surgery, Nicklaus Children's Hospital, Miami, FL, USA.
| | - Toba N Niazi
- Department of Neurological Surgery, University of Miami, Jackson Memorial Hospital, Miami, FL, USA
- Department of Neurological Surgery, Nicklaus Children's Hospital, Miami, FL, USA
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Sadeghmousavi S, Rezaei N, Hanaei S. Nutrition and Diet: A Double-Edged Sword in Development and Treatment of Brain Tumors. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1394:153-180. [PMID: 36587387 DOI: 10.1007/978-3-031-14732-6_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Brain tumor (BT) is the second most common pediatric cancer, one of the most common cancers among adults, and the major cause of cancer-related morbidity and mortality worldwide. Both genetics and environment can contribute to BT induction. One of the environmental risks is diet which has not been proven as a certain hazard yet. The objective of the current chapter was to review the literature concerning both positive and negative effects of nutrition on BT risk.
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Affiliation(s)
- Shaghayegh Sadeghmousavi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Department of Immunology, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Sara Hanaei
- Universal Scientific Education and Research Network (USERN), Tehran, Iran. .,Department of Neurosurgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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Zhang W, Jiang J, He Y, Li X, Yin S, Chen F, Li W. Association Between Dietary Nitrite intake and Glioma Risk: A Systematic Review and Dose-Response Meta-Analysis of Observational Studies. Front Oncol 2022; 12:910476. [PMID: 35875114 PMCID: PMC9304866 DOI: 10.3389/fonc.2022.910476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundNitrite and nitrate intake through food and water may be an important risk factor for many cancers, including glioma. However, the association of nitrite and nitrate with glioma is unclear.ObjectiveThis review aimed to quantitatively assess the effects of nitrite and nitrate on glioma by meta-analysis.MethodsA literature search was conducted for available articles published in English using the databases of Embase, Web of Science, PubMed, Medline, and the Cochrane Library up to 24 March 2022. According to heterogeneity, the fixed-effects or random-effects model was selected to obtain the merger’s relative risk (RR). Based on the methods described by Greenland and Longnecker, we explored the dose-response relationship between nitrite/nitrate and the risk of glioma. Subgroup analysis, sensitivity analysis, and publication bias tests were also used.ResultsThis study reviewed 17 articles, including 812,107 participants and 4,574 cases. For glioma in adults, compared with the lowest intakes, the highest intakes of nitrite significantly increased the risk of glioma (RR=1.26, 95% confidence interval (95%CI):1.09-1.47). For brain tumors in children, compared with the lowest intakes, the highest intakes of nitrate significantly increased the risk of brain tumors (RR=1.27, 95%CI:1.06-1.52). The results of subgroup and sensitivity analyses remained unchanged. In the dose-response relationship, per 1 mg/day increase in nitrite intake increased the risk of glioma by 14% (RR=1.14, 95%CI:1.01-1.27).ConclusionsOur analysis suggests that nitrite increases the risk of glioma in adults, while nitrate increases the risk of brain tumors in children. Therefore, the effects of nitrite and nitrate on glioma cannot be ignored.Systematic Review Registrationhttps://www.crd.york.ac.uk/prospero/, identifier CRD42022320295.
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Affiliation(s)
- Weichunbai Zhang
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jing Jiang
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yongqi He
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xinyi Li
- College of Nursing, University of South Florida, Tampa, FL, United States
| | - Shuo Yin
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Feng Chen
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wenbin Li
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Wenbin Li,
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Saneei P, Willett W, Esmaillzadeh A. Red and processed meat consumption and risk of glioma in adults: A systematic review and meta-analysis of observational studies. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2015; 20:602-12. [PMID: 26600837 PMCID: PMC4621656 DOI: 10.4103/1735-1995.165970] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND These findings from several observational studies, investigated the association between red meat consumption and gliomas, were inconsistent. We conducted a systematic review and meta-analysis of observational studies to summarize available date on the relation between meat intake and risk of glioma. MATERIALS AND METHODS A systematic literature search of relevant reports published until May 2014 of the PubMed/Medline, ISI Web of Knowledge, Excerpta Medica database, Ovid database, Google Scholar, and Scopus databases was conducted. From 723 articles yielded in the preliminary literature search, data from eighteen publications (14 case-control, three cohort, and one nested case-control study) on unprocessed red meat, processed meat, and/or total red meat consumption in relation to glioma in adults were included in the analysis. Quality assessment of studies was performed. Random effects model was used to conduct the meta-analysis. RESULTS We found a positive significant association between unprocessed red meat intake and risk of glioma (relative risk [RR] = 1.30; 95% confidence interval [CI]: 1.08-1.58) after excluding three studies with uncertain type of brain cancer. This analysis included only one cohort study which revealed no relation between unprocessed red meat intake and glioma (RR = 1.75; 95% CI: 0.35-8.77). Consumption of processed meats was not related to increased risk of glioma in population-based case-control studies (RR = 1.26; 95% CI: 1.05-1.51) and reduced risk in hospital-based case-controls (RR = 0.79; 95% CI: 0.65-0.97). No significant association was seen between processed red meat intake and risk of glioma in cohort studies (RR: 1.08; 95% CI: 0.84-1.37). Total red meat consumption was not associated with risk of adult glioma in case-control or cohort studies. CONCLUSION In this meta-analysis of 18 observational studies, we found a modest positive association between unprocessed red meat intake and risk of gliomas based almost entirely on case-control studies. Processed red meat was overall not associated with risk of gliomas in case-control or cohort studies.
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Affiliation(s)
- Parvane Saneei
- Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Walter Willett
- Department of Nutrition and Epidemiology, Harvard School of Public Health, Boston, USA
| | - Ahmad Esmaillzadeh
- Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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Childhood folate, B6, B12, and food group intake and the risk of childhood brain tumors: results from an Australian case–control study. Cancer Causes Control 2015; 26:871-9. [DOI: 10.1007/s10552-015-0562-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
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Greenop KR, Miller M, Bailey HD, Scott RJ, Attia J, Bower C, van Bockxmeer FM, Ashton LJ, Armstrong BK, Milne E. Paternal Dietary Folate, B6 and B12 Intake, and the Risk of Childhood Brain Tumors. Nutr Cancer 2015; 67:224-30. [DOI: 10.1080/01635581.2015.990571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Greenop KR, Miller M, de Klerk NH, Scott RJ, Attia J, Ashton LJ, Dalla-Pozza L, Bower C, Armstrong BK, Milne E. Maternal Dietary Intake of Folate and Vitamins B6 and B12 During Pregnancy and Risk of Childhood Brain Tumors. Nutr Cancer 2014; 66:800-9. [DOI: 10.1080/01635581.2014.916326] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Linabery AM, Johnson KJ, Ross JA. Childhood cancer incidence trends in association with US folic acid fortification (1986-2008). Pediatrics 2012; 129:1125-33. [PMID: 22614769 PMCID: PMC3362910 DOI: 10.1542/peds.2011-3418] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Epidemiologic evidence indicates that prenatal vitamin supplementation reduces risk for some childhood cancers; however, a systematic evaluation of population-based childhood cancer incidence trends after fortification of enriched grain products with folic acid in the United States in 1996-1998 has not been previously reported. Here we describe temporal trends in childhood cancer incidence in association with US folic acid fortification. METHODS Using Surveillance, Epidemiology, and End Results program data (1986-2008), we calculated incidence rate ratios and 95% confidence intervals to compare pre- and postfortification cancer incidence rates in children aged 0 to 4 years. Incidence trends were also evaluated by using joinpoint and loess regression models. RESULTS From 1986 through 2008, 8829 children aged 0 to 4 years were diagnosed with malignancies, including 3790 and 3299 in utero during the pre- and postfortification periods, respectively. Pre- and postfortification incidence rates were similar for all cancers combined and for most specific cancer types. Rates of Wilms tumor (WT), primitive neuroectodermal tumors (PNETs), and ependymomas were significantly lower postfortification. Joinpoint regression models detected increasing WT incidence from 1986 through 1997 followed by a sizable decline from 1997 through 2008, and increasing PNET incidence from 1986 through 1993 followed by a sharp decrease from 1993 through 2008. Loess curves indicated similar patterns. CONCLUSIONS These results provide support for a decrease in WT and possibly PNET incidence, but not other childhood cancers, after US folic acid fortification.
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Affiliation(s)
- Amy M. Linabery
- Division of Pediatric Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Kimberly J. Johnson
- Brown School, Department of Pediatrics, Washington University in St Louis, St Louis, Missouri
| | - Julie A. Ross
- Division of Pediatric Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota;,University of Minnesota Cancer Center, Minneapolis, Minnesota
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10
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Ciappio ED, Mason JB, Crott JW. Maternal one-carbon nutrient intake and cancer risk in offspring. Nutr Rev 2012; 69:561-71. [PMID: 21967157 DOI: 10.1111/j.1753-4887.2011.00424.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dietary intake of one-carbon nutrients, particularly folate, vitamin B(2) (riboflavin), vitamin B(6) , vitamin B(12) , and choline have been linked to the risk of cancers of the colon and breast in both human and animal studies. More recently, experimental and epidemiological data have emerged to suggest that maternal intake of these nutrients during gestation may also have an impact on the risk of cancer in offspring later in life. Given the plasticity of DNA methylation in the developing embryo and the established role of one-carbon metabolism in supporting biological methylation reactions, it is plausible that alterations in maternal one-carbon nutrient availability might induce subtle epigenetic changes in the developing embryo and fetus that persist into later life, altering the risk of tumorigenesis throughout the lifespan. This review summarizes the current literature on maternal one-carbon nutrient intake and offspring cancer risk, with an emphasis on cancers of the colon and breast, and discusses specific epigenetic modifications that may play a role in their pathogenesis.
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Affiliation(s)
- Eric D Ciappio
- Vitamins and Carcinogenesis Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts 02111, USA
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12
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Weng HH, Tsai SS, Wu TN, Sung FC, Yang CY. Nitrates in drinking water and the risk of death from childhood brain tumors in Taiwan. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2011; 74:769-78. [PMID: 21541879 DOI: 10.1080/15287394.2011.567951] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The objective of this study was to (1) examine the relationship between nitrate (NO₃-N) levels in public water supplies and risk of death from childhood brain tumors (CBT) and (2) determine whether calcium (Ca) and magnesium (Mg) levels in drinking water might modify the effects of NO₃-N on development of CBT. A matched cancer case-control study was used to investigate the relationship between the risk of death attributed to CBT and exposure to NO₃-N in drinking water in Taiwan. All CBT deaths of Taiwan residents from 1999 through 2008 were obtained from the Bureau of Vital Statistics of the Taiwan Provincial Department of Health. Controls were deaths from other causes and were pair-matched to the cases by gender, year of birth, and year of death. Information on the levels of nitrate-nitrogen NO₃-N, Ca, and Mg in drinking water were collected from Taiwan Water Supply Corporation. The municipality of residence for CBT cases and controls was presumed to be the source of the subject's NO₃-N, Ca, and Mg exposure via drinking water. Relative to individuals whose NO₃-N exposure level was ≤ 0.31 ppm, and the adjusted odds ration (OR) (95% confidence interval [CI]) for CBT occurrence was 1.4 (1.07-1.84) for individuals who resided in municipalities served by drinking water with a NO₃-N exposure > 0.31 ppm. No significant effect modification was observed by Ca and Mg intake via drinking water. Data suggest that exposure to NO₃-N in drinking water is associated with a higher risk of CBT development in Taiwan.
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Affiliation(s)
- Hsu-Huei Weng
- Department of Diagnostic Radiology, Chang Gung Memorial Hospital at Chiayi, Chang Gung University College of Medicine, Taiwan
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Baldi I, Huchet A, Bauchet L, Loiseau H. [Epidemiology of glioblastoma]. Neurochirurgie 2010; 56:433-40. [PMID: 20869733 DOI: 10.1016/j.neuchi.2010.07.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 07/01/2010] [Indexed: 11/24/2022]
Abstract
An increasing incidence of glioblastoma has been observed over the last 30 years. Improvements in diagnostic tools such as CT scans and MRI, changes observed in histological classifications, and adjustments in neurosurgical practices have contributed substantially to this increase. Moreover, the aging of the population and the increasing occurrence of glioblastoma beyond 60 years of age are additional explanations. In Gironde (France), where a specialized registry has been established, the annual incidence of glioblastoma is 4.96/100,000. Wide geographic variations are observed, possibly linked to ethnicity. However, the role of intrinsic and/or extrinsic factors cannot be ruled out. Comparing data between registries is difficult and requires taking into account periods of recruitment and diagnostic tools. Ethnicity, age, sex, hereditary syndromes, some constitutive polymorphisms, and brain irradiation are the established risk factors Allergies or asthma, certain viral infections, autoimmune diseases, nonsteroidal anti-inflammatory drug intake, substitutive hormonal therapy, and dietary antioxidant intake are the established protective factors. Many studies on electromagnetic fields - in particular cellular phones - pesticides, solvents, and other factors have been published. Until now, the results are discordant or are not confirmed because of methodological limitations. Future studies combining constitutive polymorphisms and exposure assessment are likely to provide consistent and important data that will improve our knowledge in the epidemiology of glioblastoma.
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Affiliation(s)
- I Baldi
- Laboratoire santé travail et environnement, hôpital Pellegrin, université de Bordeaux, 2, place Amélie-Raba-Léon, 33076 Bordeaux cedex, France
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14
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[Epidemiology of primary brain tumor]. Rev Neurol (Paris) 2009; 165:650-70. [PMID: 19446856 DOI: 10.1016/j.neurol.2009.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 04/01/2009] [Accepted: 04/03/2009] [Indexed: 01/13/2023]
Abstract
Two main approaches are generally used to study the epidemiology of primary brain tumors. The first approach is to identify risk factors, which may be intrinsic or related to external causes. The second main approach is descriptive. Intrinsic factors potentially affecting risk include genetic predisposition and susceptibility, gender, race, birth weight and allergy. Radiation exposure is the main extrinsic factor affecting risk. A large body of work devoted, among others, to electromagnetic fields and especially cellular phones, substitutive hormonal therapy, pesticides, and diet have been published. To date, results have been discordant. Descriptive epidemiological studies have reported an increasing annual incidence of primary brain tumors in industrialized countries. The main reasons are the increasing age of the population and better access to diagnostic imaging. Comparing incidences from one registry to another is difficult. Spatial and temporal variations constitute one explanation and evolutions in coding methods another. In all registries, weak incidence of primary brain tumors constitute a very important limiting factor. Renewed interest from the neuro-oncological community is needed to obtain pertinent and essential data which could facilitate improved knowledge on this topic.
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Pogoda JM, Preston-Martin S, Howe G, Lubin F, Mueller BA, Holly EA, Filippini G, Peris-Bonet R, McCredie MRE, Cordier S, Choi W. An international case-control study of maternal diet during pregnancy and childhood brain tumor risk: a histology-specific analysis by food group. Ann Epidemiol 2009; 19:148-60. [PMID: 19216997 PMCID: PMC2832584 DOI: 10.1016/j.annepidem.2008.12.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Revised: 12/07/2008] [Accepted: 12/11/2008] [Indexed: 12/30/2022]
Abstract
PURPOSE Maternal dietary data from an international collaborative case-control study on childhood brain tumors were used to evaluate associations between histology-specific risk and consumption of specific food groups during pregnancy. METHODS Nine study centers from seven countries contributed 1218 cases and 2223 controls. Most cases were diagnosed between 1982 and 1992 and ranged in age from 0 to 19 years. Dietary consumption was measured as average grams per day. RESULTS Foods generally associated with increased risk were cured meats, eggs/dairy, and oil products; foods generally associated with decreased risk were yellow-orange vegetables, fresh fish, and grains. The cured meat association was specific to astrocytomas (odds ratio [OR] range=1.8-2.5 across astrocytoma subtypes for 4th vs. 1st quartile of consumption, p trends CONCLUSIONS These results suggest the need for dietary analysis not only by brain tumor histology, but also by specific foods within a broad food group.
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Affiliation(s)
- Janice M Pogoda
- USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA.
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Goh YI, Koren G. Prenatal supplementation with multivitamins and the incidence of pediatric cancers: clinical and methodological considerations. Pediatr Blood Cancer 2008; 50:487-9; discussion 498. [PMID: 18064661 DOI: 10.1002/pbc.21403] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cancer is the second leading cause of death in children. Research has been undertaken to identify risk factors associated with pediatric cancers. Nevertheless one single cause has not been isolated. Recent studies have suggested that prenatal multivitamin consumption may be associated with the prevention of pediatric cancers. It has been shown previously that prenatal multivitamin ingestion is associated with a decrease in congenital anomalies. The following review summarizes the available knowledge associating prenatal multivitamin consumption with the prevention of pediatric cancers.
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Affiliation(s)
- Y Ingrid Goh
- Motherisk Program, Division of Clinical Pharmacology and Toxicology, The Hospital for Sick Children, Toronto, Canada
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Goh YI, Bollano E, Einarson TR, Koren G. Prenatal Multivitamin Supplementation and Rates of Pediatric Cancers: A Meta-Analysis. Clin Pharmacol Ther 2007; 81:685-91. [PMID: 17314929 DOI: 10.1038/sj.clpt.6100100] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Prenatal supplementation of folic acid has been shown to decrease the risk of several congenital malformations. Several studies have recently suggested a potential protective effect of folic acid on certain pediatric cancers. The protective role of prenatal multivitamins has not been elucidated. We conducted a systematic review and meta-analysis to assess the potential protective effect of prenatal multivitamins on several pediatric cancers. Medline, PubMed, EMBASE, Toxline, Healthstar, and Cochrane databases were searched for studies published in all languages from 1960 to July 2005 on multivitamin supplementation and pediatric cancers. References from all articles collected were reviewed for additional articles. Two blinded independent reviewers assessed the articles for inclusion and exclusion. Rates of cancers in women supplemented with multivitamins were compared with unsupplemented women using a random effects model. Sixty-one articles were identified in the initial search, of which, seven articles met the inclusion criteria. There was an apparent protective effect for leukemia (odds ratio (OR)=0.61, 95% confidence interval (CI)=0.50-0.74), pediatric brain tumors (OR=0.73, 95% CI=0.60-0.88) and neuroblastoma (OR=0.53, 95% CI=0.42-0.68). In conclusion, maternal ingestion of prenatal multivitamins is associated with a decreased risk for pediatric brain tumors, neuroblastoma, and leukemia. Presently, it is not known which constituent(s) among the multivitamins confer this protective effect.
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Affiliation(s)
- Y I Goh
- Department of Pharmaceutical Sciences, University of Toronto, and The Motherisk Program, Division of Clinical Pharmacology/Toxicology, The Hospital for Sick Children, Toronto, Ontario, Canada
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Abstract
Our aim was to review the epidemiological literature on possible cancer-preventive effects of the consumption of fruits and vegetables in humans, to quantify the effect of high versus low consumption of fruits and vegetables, and to give an overall assessment of the existing evidence. We based our work on an expert meeting conducted by the International Agency for Research on Cancer in 2003. A qualitative reading and evaluation of relevant articles on the cancer-preventive effect of the consumption of fruits and vegetables was made followed by the calculation of the mean relative risk and range for cohort and case-control studies separately. The possible population-preventable fraction for modifying diet in relation to fruit and vegetable consumption was calculated as well as an overall statement about the degree of evidence for the cancer-preventive effect of fruit and vegetable consumption for each cancer site. There is limited evidence for a cancer-preventive effect of the consumption of fruits and vegetables for cancer of the mouth and pharynx, esophagus, stomach, colon-rectum, larynx, lung, ovary (vegetables only), bladder (fruit only), and kidney. There is inadequate evidence for a cancer-preventive effect of the consumption of fruits and vegetables for all other sites. Applying this range of risk difference to the range of prevalence of low intake, the preventable fraction for low fruit and vegetable intake would fall into the range of 5-12%. It is important to recognize that this is only a crude range of estimates and that the proportion of cancers that might be preventable by increasing fruit and vegetable intake may vary beyond this range for specific cancer sites and across different regions of the world.
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Affiliation(s)
- Harri Vainio
- Finnish Institute of Occupational Health, Helsinki, Finland
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Palencia G, Rembao D, Sotelo J. Chronic malnutrition does not influence the development of ethylnitrosourea-induced brain tumors. Nutr Neurosci 2006; 8:323-5. [PMID: 16669603 DOI: 10.1080/10284150600576630] [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: 10/24/2022]
Abstract
There is controversy over the subject of malnutrition as a potential risk factor for cancer; we studied the effect of chronic malnutrition on the development of tumors in rats prenatally exposed to the carcinogenic ethylnitrosourea. Twelve pregnant Wistar rats were administered on the 19th day of gestation with a single i.v. dose of 30 mg/kg of ethylnitrosourea. Immediately after weaning, at 23 days of age, half of the offspring were nourished with a protein-deficient diet (less than 6%), which consisted mostly of a corn-based diet with high calorie and low fiber contents. In the adult age, 83 rats (74%) developed a tumor of the nervous system; in comparison with controls, we found no differences in time of development, site and histological characteristics of the tumors that developed in animals subjected to chronic malnutrition.
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Affiliation(s)
- G Palencia
- Neuroimmunology Laboratory, National Institute of Neurology and Neurosurgery of Mexico, Mexico, DF.
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Cardy AH, Little J, McKean-Cowdin R, Lijinsky W, Choi NW, Cordier S, Filippini G, Holly EA, Lubin F, McCredie M, Mueller BA, Peris-Bonet R, Arslan A, Preston-Martin S. Maternal medication use and the risk of brain tumors in the offspring: the SEARCH international case-control study. Int J Cancer 2006; 118:1302-8. [PMID: 16161045 DOI: 10.1002/ijc.21482] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
N-nitroso compounds (NOC) have been associated with carcinogenesis in a wide range of species, including humans. There is strong experimental data showing that nitrosamides (R(1)NNO.COR(2)), a type of NOC, are potent neuro-carcinogens when administered transplacentally. Some medications are a concentrated source of amides or amines, which in the presence of nitrites under normal acidic conditions of the stomach can form NOC. Therefore, these compounds, when ingested by women during pregnancy, may be important risk factors for tumors of the central nervous system in the offspring. The aim of the present study was to test the association between maternal use of medications that contain nitrosatable amines or amides and risk of primary childhood brain tumors (CBT). A case-control study was conducted, which included 1,218 cases and 2,223 population controls, recruited from 9 centers across North America, Europe and Australia. Analysis was conducted for all participants combined, by tumor type (astroglial, primitive neuroectodermal tumors and other glioma), and by age at diagnosis (< or =5 years; >5 years). There were no significant associations between maternal intake of medication containing nitrosatable amines or amides and CBT, for all participants combined and after stratification by age at diagnosis and histological subtype. This is the largest case-control study of CBT and maternal medications to date. Our data provide little support for an association between maternal use of medications that may form NOC and subsequent development of CBT in the offspring.
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Affiliation(s)
- Amanda H Cardy
- Department of Public Health, University of Aberdeen, Aberdeen AB25 2ZD, Scotland, United Kingdom.
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Dietrich M, Block G, Pogoda JM, Buffler P, Hecht S, Preston-Martin S. A review: dietary and endogenously formed N-nitroso compounds and risk of childhood brain tumors. Cancer Causes Control 2006; 16:619-35. [PMID: 16049800 DOI: 10.1007/s10552-005-0168-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2004] [Accepted: 01/05/2005] [Indexed: 12/12/2022]
Abstract
Maternal dietary exposure to N-nitroso compounds (NOC) or to their precursors during pregnancy has been associated with risk of childhood brain tumors. Cured meat is one source of exposure to dietary NOC and their precursors. Most epidemiological studies that have examined the role of maternal consumption of cured meats during pregnancy have found a significant positive association between maternal intake of cured meat and the risk of childhood brain tumor (CBT). NOC consist of two main groups, N-nitrosamines and N-nitrosamides. The carcinogenicity profiles of NOC suggest that N-nitrosamides rather than N-nitrosamines are the compounds that may be associated with CBT and that they should be investigated more closely in epidemiological studies. We present a review of the chemical and carcinogenic properties of NOC in connection with the findings of case-control studies. This approach may be helpful in determining the essential information that must be collected in future epidemiological studies on CBT.
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Affiliation(s)
- Marion Dietrich
- School of Public Health, University of California-Berkeley, Berkeley, CA 94720-7360, USA.
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23
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Nathoo N, Barnett GH, Golubic M. The eicosanoid cascade: possible role in gliomas and meningiomas. J Clin Pathol 2004; 57:6-13. [PMID: 14693827 PMCID: PMC1770171 DOI: 10.1136/jcp.57.1.6] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Eicosanoids constitute a large family of biologically active lipid mediators that are produced by two enzyme classes, cyclooxygenases (COX-1 and COX-2) and lipoxygenases (5-LO, 12-LO, and 15-LO). Increasing evidence suggests that in addition to a variety of epithelial malignancies, the two most common types of human brain tumour, gliomas and meningiomas, aberrantly overexpress eicosanoid producing enzymes and release a spectrum of eicosanoids that may promote tumorigenesis and the development of peritumorous brain oedema. Glioma and meningioma cells are killed in vitro and in animal models when exposed to COX-2 and 5-LO inhibitors, and their effectiveness is under investigation in clinical trials for treatment of patients with malignant brain tumours. However, despite research into the role of the eicosanoid cascade in the tumorigenesis of human brain tumours, many important questions remain unanswered. Current and newer agents that specifically target key players of the eicosanoid cascade could change the approach to treating brain tumours, because their benefits may lie in their synergism with conventional cytotoxic treatments and/or with other novel agents targeted against other procarcinogenic pathways.
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Affiliation(s)
- N Nathoo
- Brain Tumour Institute and Department of Neurosurgery, Cleveland Clinic Foundation, Cleveland, 44195 Ohio, USA.
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24
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Klurfeld DM. Maternal cured meat consumption during pregnancy and risk of paediatric brain tumour in offspring: potentially harmful levels of intake. Public Health Nutr 2001; 4:1303-5. [PMID: 11796094 DOI: 10.1079/phn2001270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Abstract
A number of exciting advances have been reported over the past few years in the understanding and treatment of children with brain tumors. The present review highlights many of the publications from this period, focusing on their relevance within the major diagnostic and treatment domains of pediatric oncology (surgery, radiation therapy, chemotherapy, neuropathology, and neuroradiology). Although many of the publications cited provide confirmation of previously reported work, when taken together they form a good framework of the state of the field from the past few years.
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Affiliation(s)
- M W Kieran
- Pediatric Medical Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA.
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