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Cigarette Smoking Is Associated with Increased Risk of Malignant Gliomas: A Nationwide Population-Based Cohort Study. Cancers (Basel) 2020; 12:cancers12051343. [PMID: 32466105 PMCID: PMC7280985 DOI: 10.3390/cancers12051343] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/13/2020] [Accepted: 05/22/2020] [Indexed: 01/23/2023] Open
Abstract
The association between cigarette smoking and the risk of developing malignant glioma (MG) remains unclear. We aimed to evaluate this potential association in a large general population, using a well-established and validated longitudinal nationwide database. Using data from the Korean National Health Insurance System cohort, 9,811,768 people over 20 years old without any cancer history in 2009 were followed until the end of 2017. We documented 6100 MG cases (ICD-10 code C71) during the median follow-up period of 7.31 years. Current smokers had a higher risk of developing MG (HR = 1.22, CI: 1.13–1.32) compared with never-smokers, after adjusting for confounders. This association was stronger for those who smoked ≥ 20 cigarettes daily (HR = 1.50, CI: 1.36–1.64). Furthermore, having 30 or more pack-years of smoking over the course of one’s lifetime was associated with an increased risk of developing MG in a dose-dependent manner, compared with never-smokers (HR = 1.31, CI: 1.16–1.48 for 30–39 pack-years of smoking; HR = 1.36, CI: 1.17–1.59 for 40–49 pack-years of smoking; HR = 1.68; CI: 1.44–1.95 for ≥ 50 pack-years of smoking). These results suggest that cigarette smoking may be associated with developing MG. Further prospective studies could help elucidate this association.
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Calastri MCJ, Hattori G, Rodrigues NLTO, Gregorio ML, Brancati CIFO, Zanovelo EM, Ferraz Filho JRL, Neiva CM, Rodrigues Junior ACP, de Godoy MF, Lancellotti CLP, Tognola WA, Souza DRS. Genetic Variants Related to Cell Cycle and Stability of Telomere in Patients with Glioma. Asian Pac J Cancer Prev 2019; 20:2345-2351. [PMID: 31450905 PMCID: PMC6852820 DOI: 10.31557/apjcp.2019.20.8.2345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Indexed: 12/27/2022] Open
Abstract
Background: Glioma, most common primary malignant brain tumor in adults, is highly aggressive and associated with a poor prognosis. Evaluate the association of polymorphisms related of to the cell cycle, integrity and DNA repair with gliomas, as well as lifestyle habits, comorbidities, survival and response to treatment. Methods: Were studied 303 individuals distributed into: Study Group - 100 patients with gliomas, regardless of the degree of malignancy, and Control Group - 203 individuals without clinical signs of the disease. These polymorphisms were genotyped by TaqMan® SNP Genotyping Assay. Significance level was set at 5%. Results: Smoking, alcohol consumption, systemic arterial hypertension (SAH) and diabetes mellitus (DM) prevailed in patients, compared to controls (P=0.0088, P=0.0001, P=0.0001, P=0.0011, respectively). In the logistic regression analysis, alcohol consumption and SAH were identified as independent risk factors for gliomas (P=0.0001, P=0.0027, respectively). Patients with low-grade gliomas showed survival in one year (92.0±6.8%), compared to patients with high-grade gliomas (24.0±5.3; P=0.011). Conclusion: Polymorphisms involved in cell cycle, telomere protection and stability and DNA repair are not associated with gliomas. On the other hand, alcohol consumption and SAH stand out as independent risk factors for the disease. Low-grade gliomas, response to treatment and the combination of chemotherapy with Temozolomide and radiation therapy show increased survival of patients.
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Affiliation(s)
- Maria Clara Jessica Calastri
- Department of Biochemistry and Molecular Biology, Faculty of Medicine , São José do Rio Preto, São Paulo, Brazil.
| | - Gabriela Hattori
- Department of Biochemistry and Molecular Biology, Faculty of Medicine , São José do Rio Preto, São Paulo, Brazil.
| | | | - Michele Lima Gregorio
- Department of Biochemistry and Molecular Biology, Faculty of Medicine , São José do Rio Preto, São Paulo, Brazil.
| | | | - Eliane Milharcix Zanovelo
- Departament of Patology of the Hospital de Base University Hospital of the Medical School of São José do Rio Preto - HB/FAMERP, Brazil
| | - José Roberto Lopes Ferraz Filho
- Departament of Patology of the Hospital de Base University Hospital of the Medical School of São José do Rio Preto - HB/FAMERP, Brazil
| | - Cassiano Merussi Neiva
- Department of Physical Education of the Sao Paulo State University- "Júlio de Mesquita Filho" Campus- UNESP/Campos de Bauru, Brazil
| | | | - Moacir Fernandes de Godoy
- Department of Biochemistry and Molecular Biology, Faculty of Medicine , São José do Rio Preto, São Paulo, Brazil.
| | | | - Waldir Antonio Tognola
- Departament of Neurology of the Medical School of São José do Rio Preto - FAMERP, Brazil
| | - Dorotéia Rossi Silva Souza
- Department of Biochemistry and Molecular Biology, Faculty of Medicine , São José do Rio Preto, São Paulo, Brazil.
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Björkblom B, Wibom C, Jonsson P, Mörén L, Andersson U, Johannesen TB, Langseth H, Antti H, Melin B. Metabolomic screening of pre-diagnostic serum samples identifies association between α- and γ-tocopherols and glioblastoma risk. Oncotarget 2018; 7:37043-37053. [PMID: 27175595 PMCID: PMC5095057 DOI: 10.18632/oncotarget.9242] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 04/23/2016] [Indexed: 12/25/2022] Open
Abstract
Glioblastoma is associated with poor prognosis with a median survival of one year. High doses of ionizing radiation is the only established exogenous risk factor. To explore new potential biological risk factors for glioblastoma, we investigated alterations in metabolite concentrations in pre-diagnosed serum samples from glioblastoma patients diagnosed up to 22 years after sample collection, and undiseased controls. The study points out a latent biomarker for future glioblastoma consisting of nine metabolites (γ-tocopherol, α-tocopherol, erythritol, erythronic acid, myo-inositol, cystine, 2-keto-L-gluconic acid, hypoxanthine and xanthine) involved in antioxidant metabolism. We detected significantly higher serum concentrations of α-tocopherol (p=0.0018) and γ-tocopherol (p=0.0009) in future glioblastoma cases. Compared to their matched controls, the cases showed a significant average fold increase of α- and γ-tocopherol levels: 1.2 for α-T (p=0.018) and 1.6 for γ-T (p=0.003). These tocopherol levels were associated with a glioblastoma odds ratio of 1.7 (α-T, 95% CI:1.0-3.0) and 2.1 (γ-T, 95% CI:1.2-3.8). Our exploratory metabolomics study detected elevated serum levels of a panel of molecules with antioxidant properties as well as oxidative stress generated compounds. Additional studies are necessary to confirm the association between the observed serum metabolite pattern and future glioblastoma development.
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Affiliation(s)
- Benny Björkblom
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Carl Wibom
- Department of Radiation Sciences, Oncology, Umeå University, SE-90187 Umeå, Sweden
| | - Pär Jonsson
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Lina Mörén
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Ulrika Andersson
- Department of Radiation Sciences, Oncology, Umeå University, SE-90187 Umeå, Sweden
| | - Tom Børge Johannesen
- Cancer Registry of Norway, Institute of Population-Based Cancer Research, N-0304 Oslo, Norway
| | - Hilde Langseth
- Cancer Registry of Norway, Institute of Population-Based Cancer Research, N-0304 Oslo, Norway
| | - Henrik Antti
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Beatrice Melin
- Department of Radiation Sciences, Oncology, Umeå University, SE-90187 Umeå, Sweden
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Li HX, Peng XX, Zong Q, Zhang K, Wang MX, Liu YZ, Han GL. Cigarette smoking and risk of adult glioma: a meta-analysis of 24 observational studies involving more than 2.3 million individuals. Onco Targets Ther 2016; 9:3511-23. [PMID: 27366088 PMCID: PMC4913539 DOI: 10.2147/ott.s99713] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Cigarette smoking has been shown to be a risk factor for adult glioma by some but not all studies. We conducted a meta-analysis to systematically assess the potential association. Methods PubMed and EMBASE were searched from the date of their inception to October 1, 2015, to identify relevant articles. Reference lists from these articles were reviewed to identify additional studies. Both cohort and case–control studies were included. Fixed-effects models were used to calculate the overall relative risk (RR) with corresponding 95% confidence intervals (CIs). Results The final analysis included 24 studies (seven cohort and 17 case–control studies), involving more than 2.3 million individuals. The combined RR was 1.04 (95% CI: 1.00, 1.09; P=0.073) for ever-smokers, 0.97 (95% CI: 0.88, 1.07; P=0.574) for current-smokers, and 1.07 (95% CI: 0.98, 1.16; P=0.130) for past smokers, with little evidence of heterogeneity. Omission of any single study from the analysis had little effect on the result. No evidence of publication bias was found. A small but statistically significant increase was found in past smokers in females (RR: 1.13, 95% CI: 1.00, 1.28; P=0.046) but not in males. Conclusion In general, there was no association between cigarette smoking and adult glioma. The small but statistically significant association in females requires further investigation.
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Affiliation(s)
- Hong-Xing Li
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Xiao-Xiao Peng
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China; Department of Intensive Care Unit, Dongying, Shandong, People's Republic of China
| | - Qiang Zong
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Kai Zhang
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Ming-Xin Wang
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Yi-Zhe Liu
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Guang-Liang Han
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
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Quach P, El Sherif R, Gomes J, Krewksi D. A systematic review of the risk factors associated with the onset and progression of primary brain tumours. Neurotoxicology 2016; 61:214-232. [PMID: 27212451 DOI: 10.1016/j.neuro.2016.05.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 05/13/2016] [Indexed: 12/17/2022]
Abstract
The overall aim of this systematic review was to identify risk factors for onset and natural progression, which were shown to increase, decrease, or have a null association with risk of primary brain tumour. For onset, the project was separated into two phases. The first phase consisted of a systematic search of existing systematic reviews and meta-analyses. Moderate to high methodological quality reviews were incorporated and summarized with relevant observational studies published since 2010, identified from a systematic search performed in phase 2. For natural progression, only the first phase was conducted. Standard systematic review methodology was utilized. Based on this review, various genetic variants, pesticide exposures, occupational farming/hairdressing, cured meat consumption and personal hair dye use appear to be associated with increased risk of onset amongst adults. The specific EGF polymorphsm 61-A allele within Caucasian populations and having a history of allergy was associated with a decreased risk. For progression, M1B-1 antigen was shown to increase the risk. High birth weight, pesticide exposure (childhood exposure, and parental occupational exposure) and maternal consumption of cured meat during pregnancy may also increase the risk of onset of childhood brain tumours. Conversely, maternal intake of pre-natal supplements (folic acid) appeared to decrease risk. Children with neurofibromatosis 2 were considered to have worse overall and relapse free survival compared to neurofibromatosis 1, as were those children who had grade III tumours compared to lesser grades.
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Affiliation(s)
- Pauline Quach
- School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada.
| | - Reem El Sherif
- Department of Family Medicine, McGill University, Montreal, QC, Canada
| | - James Gomes
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Canada
| | - Daniel Krewksi
- School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada; McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Risk Sciences International, Ottawa, ON, Canada
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Abstract
To systematically assess the relationship between smoking and glioma risk.A dose-response meta-analysis of case-control and cohort studies was performed. Pertinent studies were identified by searching database and reference lists. Random-effects model was employed to pool the estimates of the relative risks (RRs) with corresponding 95% confidence intervals (CIs).A total of 19 case-control and 6 cohort studies were included. Overall, compared with those who never smoked, the pooled RR and 95% CI was 0.98 (0.92-1.05) for ever smoker. The subgroups were not significantly different regarding risk of glioma except the group of age at start smoking (RR = 1.17, 95% CI: 0.93-1.48 for age < 20; RR = 1.25, 95% CI: 1.02-1.52 for age ≥ 20). Dose-response analysis also suggested no significant association between smoking and the risk of glioma, although some evidence for a linear relationship between smoking and glioma risk was observed.In conclusion, this meta-analysis provides little support for a causal relationship between smoking and risk of glioma.
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Affiliation(s)
- Chuan Shao
- From the Department of Neurosurgery, The Second Clinical Medical College of North Sichuan Medical College, Nanchong, Sichuan, China (CS, WZ, JH); and Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China (ZQ)
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Pouchieu C, Baldi I, Gruber A, Berteaud E, Carles C, Loiseau H. Descriptive epidemiology and risk factors of primary central nervous system tumors: Current knowledge. Rev Neurol (Paris) 2015; 172:46-55. [PMID: 26708326 DOI: 10.1016/j.neurol.2015.10.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/08/2015] [Accepted: 10/09/2015] [Indexed: 11/16/2022]
Abstract
Although comparisons are difficult due to differences in methodologies, the annual incidence rates of central nervous system (CNS) tumors range from 8.5 to 21.4/100,000 population according to cancer registries, with a predominance of neuroepithelial tumors in men and meningiomas in women. An increase in the incidence of CNS tumors has been observed during the past decades in several countries. It has been suggested that this trend could be due to aging of the population, and improvements in diagnostic imaging and healthcare access, but these factors do not explain differences in incidence by gender and histological subtypes. Several etiological hypotheses related to intrinsic (sociodemographic, anthropometric, hormonal, immunological, genetic) and exogenous (ionizing radiation, electromagnetic fields, diet, infections, pesticides, drugs) risk factors have led to analytical epidemiological studies to establish relationships with CNS tumors. The only established environmental risk factor for CNS tumors is ionizing radiation exposure. However, for other risk factors, studies have been inconsistent and inconclusive due to systematic differences in study design and difficulties in accurately measuring exposures. Thus, the etiology of CNS tumors is complex and may involve several genetic and/or environmental factors that may act differently according to histological subtype.
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Affiliation(s)
- C Pouchieu
- ISPED, Équipe Santé Travail Environnement, Université de Bordeaux, 33000 Bordeaux, France; Inserm, ISPED, Centre Inserm U1219, Bordeaux Population Health Center, 33000 Bordeaux, France
| | - I Baldi
- ISPED, Équipe Santé Travail Environnement, Université de Bordeaux, 33000 Bordeaux, France; Inserm, ISPED, Centre Inserm U1219, Bordeaux Population Health Center, 33000 Bordeaux, France; Service de médecine du travail, CHU de Bordeaux, 33000 Bordeaux, France.
| | - A Gruber
- ISPED, Équipe Santé Travail Environnement, Université de Bordeaux, 33000 Bordeaux, France; Inserm, ISPED, Centre Inserm U1219, Bordeaux Population Health Center, 33000 Bordeaux, France
| | - E Berteaud
- ISPED, Équipe Santé Travail Environnement, Université de Bordeaux, 33000 Bordeaux, France; Inserm, ISPED, Centre Inserm U1219, Bordeaux Population Health Center, 33000 Bordeaux, France; Service de médecine du travail, CHU de Bordeaux, 33000 Bordeaux, France
| | - C Carles
- ISPED, Équipe Santé Travail Environnement, Université de Bordeaux, 33000 Bordeaux, France; Inserm, ISPED, Centre Inserm U1219, Bordeaux Population Health Center, 33000 Bordeaux, France; Service de médecine du travail, CHU de Bordeaux, 33000 Bordeaux, France
| | - H Loiseau
- Service de neurochirurgie, CHU de Bordeaux, 33000 Bordeaux, France
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Hou L, Jiang J, Liu B, Han W, Wu Y, Zou X, Nasca PC, Xue F, Chen Y, Zhang B, Pang H, Wang Y, Wang Z, Li J. Smoking and adult glioma: a population-based case-control study in China. Neuro Oncol 2015; 18:105-13. [PMID: 26409568 DOI: 10.1093/neuonc/nov146] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 06/24/2015] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Smoking increases the risk of numerous cancers; however, an association of smoking with adult gliomas has not been found in a population. METHODS This case-control study included 4556 glioma cases (ICD-9 code 191.0-191.9) aged ≥ 30 years and 9112 controls from a national survey of smoking and mortality in China in 1989-1991. Controls from 325 255 surviving spouses of all-cause deaths were randomly assigned to cases in each of 103 areas according to sex and age groups at a ratio of 2:1. Smoking information was ascertained retrospectively by interviewing surviving spouses. RESULTS After adjustment for confounders, smoking increased the risk of glioma deaths by 11% (odds ratio [OR] = 1.11; 95% confidence interval [CI]: 1.03-1.21). Compared with non-smokers; the increased risk was 9% (OR = 1.09; 95% CI: 0.99-1.20) in men and 16% (OR = 1.16; 95% CI: 1.00-1.36) in women. The risk increased with age and doses. For individuals aged ≥ 50 years, smoking was associated with higher risk of glioma death by 25% (OR = 1.25; 95% CI: 1.15-1.38); this increased risk for smokers who smoked ≥ 20 cigarettes daily for ≥ 30 years was 53% (OR = 1.53; 95% CI: 1.34-1.74). There were similar findings in both men and women and with either pathology-based or non-pathology-based comparisons. CONCLUSIONS This study indicates that smoking is associated with glioma deaths in the Chinese population. Long-term heavy smoking could be a factor for risk stratification in individuals attending brain tumor clinics.
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Affiliation(s)
- Lei Hou
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Jingmei Jiang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Boqi Liu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Wei Han
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Yanping Wu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Xiaonong Zou
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Philip C Nasca
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Fang Xue
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Yuanli Chen
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Biao Zhang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Haiyu Pang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Yuyan Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Zixing Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
| | - Junyao Li
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China (L.H., J.J., W.H., F.X., B.Z., H.P., Y.W., Z.W.); Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (B.L., Y.W., X.Z., Y.C., J.L.); School of Public Health, State University of New York, Albany, New York (P.C.N.)
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Sergentanis TN, Tsivgoulis G, Perlepe C, Ntanasis-Stathopoulos I, Tzanninis IG, Sergentanis IN, Psaltopoulou T. Obesity and Risk for Brain/CNS Tumors, Gliomas and Meningiomas: A Meta-Analysis. PLoS One 2015; 10:e0136974. [PMID: 26332834 PMCID: PMC4558052 DOI: 10.1371/journal.pone.0136974] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 08/11/2015] [Indexed: 02/07/2023] Open
Abstract
Objective This meta-analysis aims to examine the association between being overweight/obese and risk of meningiomas and gliomas as well as overall brain/central nervous system (CNS) tumors. Study Design Potentially eligible publications were sought in PubMed up to June 30, 2014. Random-effects meta-analysis and dose-response meta-regression analysis was conducted. Cochran Q statistic, I-squared and tau-squared were used for the assessment of between-study heterogeneity. The analysis was performed using Stata/SE version 13 statistical software. Results A total of 22 studies were eligible, namely 14 cohort studies (10,219 incident brain/CNS tumor cases, 1,319 meningioma and 2,418 glioma cases in a total cohort size of 10,143,803 subjects) and eight case-control studies (1,009 brain/CNS cases, 1,977 meningioma cases, 1,265 glioma cases and 8,316 controls). In females, overweight status/obesity was associated with increased risk for overall brain/CNS tumors (pooled RR = 1.12, 95%CI: 1.03–1.21, 10 study arms), meningiomas (pooled RR = 1.27, 95%CI: 1.13–1.43, 16 study arms) and gliomas (pooled RR = 1.17, 95%CI: 1.03–1.32, six arms). Obese (BMI>30 kg/m2) females seemed particularly aggravated in terms of brain/CNS tumor (pooled RR = 1.19, 95%CI: 1.05–1.36, six study arms) and meningioma risk (pooled RR = 1.48, 95%CI: 1.28–1.71, seven arms). In males, overweight/obesity status correlated with increased meningioma risk (pooled RR = 1.58, 95%CI: 1.22–2.04, nine study arms), whereas the respective association with overall brain/CNS tumor or glioma risk was not statistically significant. Dose-response meta-regression analysis further validated the findings. Conclusion Our findings highlight obesity as a risk factor for overall brain/CNS tumors, meningiomas and gliomas among females, as well as for meningiomas among males.
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Affiliation(s)
- Theodoros N. Sergentanis
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National University of Athens, Athens, Greece
| | - Georgios Tsivgoulis
- Second Department of Neurology, “Attikon” University Hospital, Medical School, National University of Athens, Athens, Greece
| | - Christina Perlepe
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National University of Athens, Athens, Greece
| | - Ioannis Ntanasis-Stathopoulos
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National University of Athens, Athens, Greece
| | - Ioannis-Georgios Tzanninis
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National University of Athens, Athens, Greece
| | | | - Theodora Psaltopoulou
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National University of Athens, Athens, Greece
- * E-mail:
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10
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MicroRNA-383 expression regulates proliferation, migration, invasion, and apoptosis in human glioma cells. Tumour Biol 2015; 36:7743-53. [DOI: 10.1007/s13277-015-3378-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 03/24/2015] [Indexed: 10/23/2022] Open
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11
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Socioeconomic status and glioblastoma risk: a population-based analysis. Cancer Causes Control 2014; 26:179-185. [PMID: 25421378 DOI: 10.1007/s10552-014-0496-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/06/2014] [Indexed: 12/31/2022]
Abstract
PURPOSE Socioeconomic status (SES) is associated with risk of various cancer types because of correlation between SES and causal factors or increased case ascertainment, or both. Studies evaluating the association between glioblastoma and occupational or SES factors have yielded inconsistent results. We evaluated the association between SES and glioblastoma risk using a large, population-based cancer registry dataset. METHODS Data of the Surveillance, Epidemiology, and End Results Program were used to evaluate the impact of SES on glioblastoma risk. SES was divided into quintiles on the basis of census tract of residence. Census tracts are small, geographically defined areas with relatively homogeneous population characteristics. RESULTS Higher SES was strongly associated with increased risk of glioblastoma (p < .001). Relative to persons living in census tracts of the lowest SES quintile, the highest SES quintile had a rate ratio of 1.45 (95 % CI 1.39-1.51) (p < .001). Similar associations were seen in population subgroups defined by age, sex, and race. CONCLUSIONS The strong association between higher SES and greater glioblastoma risk is unlikely to represent an ascertainment effect because glioblastoma is rapidly progressive and ultimately fatal. A number of previously proposed glioma risk factors may be correlated with SES, including atopy and allergy rates, cellular telephone use, and body morphometric measures. Further research is needed to define the mechanism of this association.
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12
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Vida S, Richardson L, Cardis E, Krewski D, McBride M, Parent ME, Abrahamowicz M, Leffondré K, Siemiatycki J. Brain tumours and cigarette smoking: analysis of the INTERPHONE Canada case-control study. Environ Health 2014; 13:55. [PMID: 24972852 PMCID: PMC4088305 DOI: 10.1186/1476-069x-13-55] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 06/23/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND There is conflicting evidence regarding the associations between cigarette smoking and glioma or meningioma. Our purpose is to provide further evidence on these possible associations. METHODS We conducted a set of case-control studies in three Canadian cities, Montreal, Ottawa and Vancouver. The study included 166 subjects with glioma, 93 subjects with meningioma, and 648 population-based controls. A lifetime history of cigarette smoking was collected and various smoking indices were computed. Multivariable logistic regression was used to estimate odds ratios (ORs) between smoking and each of the two types of brain tumours. RESULTS Adjusted ORs between smoking and each type of brain tumour were not significantly elevated for all smokers combined or for smokers with over 15 pack-years ((packs / day) x years) accumulated. We tested for interactions between smoking and several sociodemographic variables; the interaction between smoking and education on glioma risk was significant, with smoking showing an elevated OR among subjects with lower education and an OR below unity among subjects with higher education. CONCLUSION Except for an unexplained and possibly artefactual excess risk in one population subgroup, we found little or no evidence of an association between smoking and either glioma or meningioma.
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Affiliation(s)
- Stephen Vida
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
- McGill University, Montréal, Québec, Canada
| | - Lesley Richardson
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
| | - Elisabeth Cardis
- Centre for Research in Environmental Epidemiology (CREAL), Municipal Institute of Medical Research (IMIM), CIBERESP, Barcelona, Spain
| | - Daniel Krewski
- McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - Mary McBride
- British Columbia Cancer Agency, Vancouver, Canada
| | - Marie-Elise Parent
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
| | - Michal Abrahamowicz
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
- McGill University, Montréal, Québec, Canada
| | - Karen Leffondré
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
- University of Bordeaux, ISPED, Centre INSERM U897-Epidemiology-Biostatistics, Bordeaux, France
| | - Jack Siemiatycki
- Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), Montréal, Québec, Canada
- Guzzo-SRC Research Chair in Environment and Cancer, Centre de Recherche, Centre hospitalier de l’Université de Montréal (CHUM), 850, rue St-Denis, room S02-458, Montreal, Quebec H2X 0A9, Canada
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A multicountry ecological study of cancer incidence rates in 2008 with respect to various risk-modifying factors. Nutrients 2013; 6:163-89. [PMID: 24379012 PMCID: PMC3916854 DOI: 10.3390/nu6010163] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/12/2013] [Accepted: 12/14/2013] [Indexed: 02/06/2023] Open
Abstract
Observational and ecological studies are generally used to determine the presence of effect of cancer risk-modifying factors. Researchers generally agree that environmental factors such as smoking, alcohol consumption, poor diet, lack of physical activity, and low serum 25-hdyroxyvitamin D levels are important cancer risk factors. This ecological study used age-adjusted incidence rates for 21 cancers for 157 countries (87 with high-quality data) in 2008 with respect to dietary supply and other factors, including per capita gross domestic product, life expectancy, lung cancer incidence rate (an index for smoking), and latitude (an index for solar ultraviolet-B doses). The factors found to correlate strongly with multiple types of cancer were lung cancer (direct correlation with 12 types of cancer), energy derived from animal products (direct correlation with 12 types of cancer, inverse with two), latitude (direct correlation with six types, inverse correlation with three), and per capita gross national product (five types). Life expectancy and sweeteners directly correlated with three cancers, animal fat with two, and alcohol with one. Consumption of animal products correlated with cancer incidence with a lag time of 15–25 years. Types of cancer which correlated strongly with animal product consumption, tended to correlate weakly with latitude; this occurred for 11 cancers for the entire set of countries. Regression results were somewhat different for the 87 high-quality country data set and the 157-country set. Single-country ecological studies have inversely correlated nearly all of these cancers with solar ultraviolet-B doses. These results can provide guidance for prevention of cancer.
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Cigarette smoking, alcohol intake, and risk of glioma in the NIH-AARP Diet and Health Study. Br J Cancer 2013; 110:242-8. [PMID: 24335921 PMCID: PMC3887282 DOI: 10.1038/bjc.2013.611] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 09/10/2013] [Accepted: 09/12/2013] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Although cigarette smoking and alcohol drinking increase the risk of several cancers and certain components of cigarette smoke and alcohol can penetrate the blood-brain barrier, it remains unclear whether these exposures influence the risk of glioma. METHODS We examined the associations between cigarette smoking, alcohol intake, and risk of glioma in the National Institutes of Health-AARP Diet and Health Study, a prospective study of 477,095 US men and women ages 50-71 years at baseline. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using models with age as the time metric and adjusted for sex, race/ethnicity, education, and marital status. RESULTS During a median 10.5 person-years of follow-up, 492 men and 212 women were diagnosed with first primary glioma. Among men, current, heavier smoking was associated with a reduced risk of glioma compared with never smoking, but this was based on only nine cases. No associations were observed between smoking behaviours and glioma risk in women. Greater alcohol consumption was associated with a decreased risk of glioma, particularly among men (>2 drinks per day vs <1 drink per week: HR=0.67, 95% CI=0.51-0.90). CONCLUSION Smoking and alcohol drinking do not appear to increase the risk of glioma.
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Anic GM, Madden MH, Sincich K, Thompson RC, Nabors LB, Olson JJ, LaRocca RV, Browning JE, Pan E, Egan KM. Early life exposures and the risk of adult glioma. Eur J Epidemiol 2013; 28:753-8. [PMID: 23681776 DOI: 10.1007/s10654-013-9811-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/06/2013] [Indexed: 10/26/2022]
Abstract
Exposure to common infections in early life may stimulate immune development and reduce the risk for developing cancer. Birth order and family size are proxies for the timing of exposure to childhood infections with several studies showing a reduced risk of glioma associated with a higher order of birth (and presumed younger age at infection). The aim of this study was to examine whether birth order, family size, and other early life exposures are associated with the risk of glioma in adults using data collected in a large clinic-based US case-control study including 889 glioma cases and 903 community controls. A structured interviewer-administered questionnaire was used to collect information on family structure, childhood exposures and other potential risk factors. Logistic regression was used to calculate odds ratios (OR) and corresponding 95% confidence intervals (CI) for the association between early life factors and glioma risk. Persons having any siblings were at significantly lower risk for glioma when compared to those reporting no siblings (OR=0.64; 95% CI 0.44-0.93; p=0.020). Compared to first-borns, individuals with older siblings had a significantly lower risk (OR=0.75; 95% CI 0.61-0.91; p=0.004). Birth weight, having been breast fed in infancy, and season of birth were not associated with glioma risk. The current findings lend further support to a growing body of evidence that early exposure to childhood infections reduces the risk of glioma onset in children and adults.
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Affiliation(s)
- Gabriella M Anic
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA
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Jacobs DI, Walsh KM, Wrensch M, Wiencke J, Jenkins R, Houlston RS, Bondy M, Simon M, Sanson M, Gousias K, Schramm J, Labussière M, Di Stefano AL, Wichmann HE, Müller-Nurasyid M, Schreiber S, Franke A, Moebus S, Eisele L, Dewan AT, Dubrow R. Leveraging ethnic group incidence variation to investigate genetic susceptibility to glioma: a novel candidate SNP approach. Front Genet 2012; 3:203. [PMID: 23091480 PMCID: PMC3469791 DOI: 10.3389/fgene.2012.00203] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Accepted: 09/20/2012] [Indexed: 12/31/2022] Open
Abstract
Objectives: Using a novel candidate SNP approach, we aimed to identify a possible genetic basis for the higher glioma incidence in Whites relative to East Asians and African-Americans. Methods: We hypothesized that genetic regions containing SNPs with extreme differences in allele frequencies across ethnicities are most likely to harbor susceptibility variants. We used International HapMap Project data to identify 3,961 candidate SNPs with the largest allele frequency differences in Whites compared to East Asians and Africans and tested these SNPs for association with glioma risk in a set of White cases and controls. Top SNPs identified in the discovery dataset were tested for association with glioma in five independent replication datasets. Results: No SNP achieved statistical significance in either the discovery or replication datasets after accounting for multiple testing or conducting meta-analysis. However, the most strongly associated SNP, rs879471, was found to be in linkage disequilibrium with a previously identified risk SNP, rs6010620, in RTEL1. We estimate rs6010620 to account for a glioma incidence rate ratio of 1.34 for Whites relative to East Asians. Conclusion: We explored genetic susceptibility to glioma using a novel candidate SNP method which may be applicable to other diseases with appropriate epidemiologic patterns.
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Affiliation(s)
- Daniel I Jacobs
- Yale School of Public Health, Yale School of Medicine New Haven, CT, USA
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Baldi I, Coureau G, Jaffré A, Gruber A, Ducamp S, Provost D, Lebailly P, Vital A, Loiseau H, Salamon R. Occupational and residential exposure to electromagnetic fields and risk of brain tumors in adults: a case-control study in Gironde, France. Int J Cancer 2011; 129:1477-84. [PMID: 21792884 DOI: 10.1002/ijc.25765] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 10/13/2010] [Indexed: 11/06/2022]
Abstract
The etiology of brain tumors remains largely unknown. Among potential risk factors, exposure to electromagnetic fields is suspected. We analyzed the relationship between residential and occupational exposure to electromagnetic field and brain tumors in adults. A case-control study was carried out in southwestern France between May 1999 and April 2001. A total of 221 central nervous system tumors (105 gliomas, 67 meningiomas, 33 neurinomas and 16 others) and 442 individually age- and sex-matched controls selected from general population were included. Electromagnetic field exposure [extremely low frequency (ELF) and radiofrequency separately was assessed in occupational settings through expert judgement based on complete job calendar, and at home by assessing the distance to power lines with the help of a geographical information system. Confounders such as education, use of home pesticide, residency in a rural area and occupational exposure to chemicals were taken into account. Separate analyses were performed for gliomas, meningiomas and acoustic neurinomas. A nonsignificant increase in risk was found for occupational exposure to electromagnetic fields [odds ratio (OR = 1.52, 0.92-2.51)]. This increase became significant for meningiomas, especially when considering ELF separately [OR = 3.02; 95 percent confidence interval (95% CI) =1.10-8.25]. The risk of meningioma was also higher in subjects living in the vicinity of power lines (<100 m), even if not significant (OR = 2.99, 95% CI 0.86-10.40). These data suggest that occupational or residential exposure to ELF may play a role in the occurrence of meningioma.
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Affiliation(s)
- Isabelle Baldi
- Laboratoire Santé Travail Environnement (EA 3672), Institut de Santé Publique, d'Épidémiologie et du Développement, IFR99, Université Victor Segalen Bordeaux 2, Bordeaux, France.
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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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Dubrow R, Darefsky AS, Park Y, Mayne ST, Moore SC, Kilfoy B, Cross AJ, Sinha R, Hollenbeck AR, Schatzkin A, Ward MH. Dietary components related to N-nitroso compound formation: a prospective study of adult glioma. Cancer Epidemiol Biomarkers Prev 2010; 19:1709-22. [PMID: 20570910 PMCID: PMC2901412 DOI: 10.1158/1055-9965.epi-10-0225] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND N-nitroso compounds (NOC) are found in processed meat and are formed endogenously from intake of nitrite and nitrate. Endogenous NOC formation is antagonized by nitrosation inhibitors in fruit and vegetables (e.g., vitamin C) and promoted by heme in red meat. It has been hypothesized that a diet resulting in high exposure to NOCs increases adult glioma risk. METHODS Using proportional hazards models, we tested this hypothesis among 545,770 participants in the prospective NIH-AARP Diet and Health Study, which assessed dietary intake at baseline (1995-1996) with a comprehensive food frequency questionnaire, and at ages 12 to 13 years with an abbreviated food frequency questionnaire. RESULTS During follow-up through 2003, 585 participants were diagnosed with glioma. We found no significant trends in glioma risk for consumption of processed or red meat, nitrate, or vitamin C or E. We found significant positive trends for nitrite intake from plant sources (hazard ratio for quintile 5 versus quintile 1, 1.59; 95% confidence interval, 1.20-2.10; P for trend = 0.028) and, unexpectedly, for fruit and vegetable intake (hazard ratio, 1.42; 95% confidence interval, 1.08-1.86; P for trend = 0.0081). Examination of interactions between dietary intakes (e.g., nitrite and vitamin C) and a limited analysis of diet at ages 12 to 13 years provided no support for the NOC hypothesis. CONCLUSIONS Our results suggest that consumption of processed or red meat, nitrite, or nitrate does not increase adult glioma risk, and that consumption of fruit and vegetables, vitamin C, or vitamin E does not reduce risk. IMPACT Our results, in agreement with the only previous prospective analysis, cast doubt on the NOC hypothesis in relation to dietary intake and adult glioma risk.
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Affiliation(s)
- Robert Dubrow
- Yale School of Public Health, 60 College Street, P.O. Box 208034, New Haven, CT 06520-8034, USA.
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Benson VS, Green J, Pirie K, Beral V. Cigarette smoking and risk of acoustic neuromas and pituitary tumours in the Million Women Study. Br J Cancer 2010; 102:1654-6. [PMID: 20461083 PMCID: PMC2883161 DOI: 10.1038/sj.bjc.6605695] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background: The relationship between cigarette smoking and incidence of acoustic neuromas and pituitary tumours is uncertain. Methods: We examined the relation between smoking and risk of acoustic neuromas and pituitary tumours in a prospective study of 1.2 million middle-aged women in the United Kingdom. Results: Over 10.2 million person years of follow-up, 177 women were diagnosed with acoustic neuromas and 174 with pituitary tumours. Current smokers at recruitment were at significantly reduced risk of incident acoustic neuroma compared with never smokers (adjusted relative risk (RR)=0.41, 95% confidence interval (CI)=0.24–0.70, P=0.001). Past smokers did not have significantly different risk of acoustic neuroma than never smokers (RR=0.87, 95% CI=0.62–1.22, P=0.4). Smoking was not associated with incidence of pituitary tumours (RR in current vs never smokers=0.91, 95% CI=0.60–1.40, P=0.7). Conclusion: Women who smoke are at a significantly reduced risk of acoustic neuromas, but not of pituitary tumours, compared with never smokers. Acoustic neuromas are much rarer than the cancers that are increased among smokers.
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Affiliation(s)
- V S Benson
- Cancer Epidemiology Unit, Nuffield Department of Clinical Medicine, University of Oxford, Richard Doll Building, Roosevelt Drive, Oxford OX3 7LF, UK
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