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Guth M, Pilorget C, Lefevre M, Coste A, Danjou A, Dananché B, Praud D, Pérol O, Daudin M, Clarotti MA, Lattes S, Bouillon C, Paul A, Schüz J, Bujan L, Olsson A, Fervers B, Charbotel B. Occupational exposure to organic solvents and the risk of developing testicular germ cell tumors (TESTIS study): Effect of combined exposure assessment on risk estimation. Scand J Work Environ Health 2024; 50:359-371. [PMID: 38597023 PMCID: PMC11245321 DOI: 10.5271/sjweh.4161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Indexed: 04/11/2024] Open
Abstract
OBJECTIVES Etiological factors of testicular germ cell tumors (TGCT) remain largely unknown, but a causal role of occupational exposures to solvents has been suggested. Previous studies analyzing these exposures reported discordant results, potentially related to exposure assessment methods. The aim of this study was to investigate the role of occupational exposure to solvents on the risk of developing TGCT among young men. METHODS This study examined occupational exposures to solvents and TGCT risk based on the lifetime work histories of 454 cases and 670 controls, aged 18-45 years, of the French national TESTIS case-control study. Solvent exposure was estimated using: (i) exposure assignment by job-exposure matrix (JEM) and (ii) JEM combined with self-reported exposure data from specific questionnaires (SQ) and expert assessment (EA). Odds ratios (OR) and 95% confidence intervals (CI) were estimated using conditional logistic regression models. RESULTS Both approaches (JEM and JEM+SQ+EA) showed a consistent association between TGCT and trichloroethylene exposure (exposed versus not exposed; JEM=OR 1.80 [95% confidence interval (CI) 1.12-2.90] and JEM+SQ+EA= OR 2.59 (95% CI 1.42-4.72). Both approaches also observed positive associations with ketone esters and fuels & petroleum-based solvents. CONCLUSION The results suggest that some organic solvents might be involved in the pathogenesis of TGCT among occupationally exposed men. The combined use of JEM+SQ+EA seemed to limit misclassification by considering individual exposure variability and is, therefore, an appealing approach to assess occupational exposures in epidemiological studies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Béatrice Fervers
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France.
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Paul A, Danjou AMN, Deygas F, Guth M, Coste A, Lefevre M, Dananché B, Kromhout H, Spinosi J, Béranger R, Pérol O, Boyle H, Hersant C, Loup-Cabaniols V, Veau S, Bujan L, Olsson A, Schüz J, Fervers B, Charbotel B. Parental occupations at birth and risk of adult testicular germ cell tumors in offspring: a French nationwide case-control study. Front Public Health 2024; 11:1303998. [PMID: 38292387 PMCID: PMC10825020 DOI: 10.3389/fpubh.2023.1303998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/28/2023] [Indexed: 02/01/2024] Open
Abstract
Background Testicular germ cell tumors (TGCT) are the most frequent cancer in young men in developed countries. Parental occupational exposures during early-life periods are suspected to increase TGCT risk. The objective was to estimate the association between parental occupations at birth and adult TGCT. Methods A case-control study was conducted, including 454 TGCT cases aged 18-45 from 20 French university hospitals, matched to 670 controls based on region and year of birth. Data collected from participants included parental jobs at birth coded according to the International Standard Classification of Occupation-1968 and the French nomenclature of activities-1999. Odds ratios (OR) for TGCT and 95% confidence intervals (CI) were estimated using conditional logistic regression, adjusting for TGCT risk factors. Results Paternal jobs at birth as service workers (OR = 1.98, CI 1.18-3.30), protective service workers (OR = 2.40, CI 1.20-4.81), transport equipment operators (OR = 1.96, CI 1.14-3.37), specialized farmers (OR = 2.66, CI 1.03-6.90), and maternal jobs as secondary education teachers (OR = 2.27, CI 1.09-4.76) or in secondary education (OR = 2.35, CI 1.13-4.88) were significantly associated with adult TGCT. The risk of seminoma was increased for the above-mentioned paternal jobs and that of non-seminomas for public administration and defence; compulsory social security (OR = 1.99, CI 1.09-3.65); general, economic, and social administration (OR = 3.21, CI 1.23-8.39) for fathers; and secondary education teacher (OR = 4.67, CI 1.87-11.67) and secondary education (OR = 3.50, CI 1.36-9.01) for mothers. Conclusion Some paternal jobs, such as service workers, transport equipment operators, or specialized farmers, and maternal jobs in secondary education seem to be associated with an increased risk of TGCT with specific features depending on the histological type. These data allow hypotheses to be put forward for further studies as to the involvement of occupational exposures in the risk of developing TGCT, such as exposure to pesticides, solvents, or heavy metals.
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Affiliation(s)
- Adèle Paul
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
- Department of Occupational Health, AMEBAT, Nantes, France
| | - Aurélie M. N. Danjou
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization, Lyon, France
| | - Floriane Deygas
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, Lyon, France
| | - Margot Guth
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
| | - Astrid Coste
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, Lyon, France
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - Marie Lefevre
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
| | - Brigitte Dananché
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, Lyon, France
| | - Hans Kromhout
- Department of Environmental Epidemiology, Institute or Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands
| | - Johan Spinosi
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
- Direction Santé Travail, Santé Public France, Saint Maurice, France
| | - Rémi Béranger
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail), Rennes, France
| | - Olivia Pérol
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, Lyon, France
| | - Helen Boyle
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | | | - Vanessa Loup-Cabaniols
- Department of Reproductive Biology, CECOS, University Hospital of Montpellier, Montpellier, France
| | - Ségolène Veau
- Department of Reproductive Medicine and Biology, CECOS, CHU Rennes, Rennes, France
| | - Louis Bujan
- DEFE (Développement Embryonnaire, Fertilité, Environnement) INSERM 1202 Universités Montpellier et Toulouse 3, CECOS Hôpital Paule de Viguier, CHU de Toulouse, Toulouse, France
- Fédération Française des CECOS, Paris, France
| | - Ann Olsson
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization, Lyon, France
| | - Joachim Schüz
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization, Lyon, France
| | - Béatrice Fervers
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, Lyon, France
- Inserm UA1296 Radiations: Défense, Santé, Environnement, Lyon, France
| | - Barbara Charbotel
- UMRESTTE (Epidemiological Research and Surveillance Unit in Transport, Occupation and Environment), Lyon 1 University, Eiffel University, Lyon, France
- CRPPE Lyon (Centre Régional de Pathologies Professionnelles et Environnementales), Hospices Civils de Lyon, Lyon, France
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Chauhan R, Archibong AE, Ramesh A. Imprinting and Reproductive Health: A Toxicological Perspective. Int J Mol Sci 2023; 24:16559. [PMID: 38068882 PMCID: PMC10706004 DOI: 10.3390/ijms242316559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/16/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023] Open
Abstract
This overview discusses the role of imprinting in the development of an organism, and how exposure to environmental chemicals during fetal development leads to the physiological and biochemical changes that can have adverse lifelong effects on the health of the offspring. There has been a recent upsurge in the use of chemical products in everyday life. These chemicals include industrial byproducts, pesticides, dietary supplements, and pharmaceutical products. They mimic the natural estrogens and bind to estradiol receptors. Consequently, they reduce the number of receptors available for ligand binding. This leads to a faulty signaling in the neuroendocrine system during the critical developmental process of 'imprinting'. Imprinting causes structural and organizational differentiation in male and female reproductive organs, sexual behavior, bone mineral density, and the metabolism of exogenous and endogenous chemical substances. Several studies conducted on animal models and epidemiological studies provide profound evidence that altered imprinting causes various developmental and reproductive abnormalities and other diseases in humans. Altered metabolism can be measured by various endpoints such as the profile of cytochrome P-450 enzymes (CYP450's), xenobiotic metabolite levels, and DNA adducts. The importance of imprinting in the potentiation or attenuation of toxic chemicals is discussed.
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Affiliation(s)
- Ritu Chauhan
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, TN 37208, USA;
| | - Anthony E. Archibong
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA;
| | - Aramandla Ramesh
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, TN 37208, USA;
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Guth M, Lefevre M, Pilorget C, Coste A, Ahmadi S, Danjou A, Dananché B, Praud D, Koscinski I, Papaxanthos A, Blagosklonov O, Fauque P, Pérol O, Schüz J, Bujan L, Olsson A, Fervers B, Charbotel B. Parental occupational exposure to solvents and risk of developing testicular germ cell tumors among sons: a French nationwide case-control study (TESTIS study). Scand J Work Environ Health 2023; 49:405-418. [PMID: 37649372 PMCID: PMC10812531 DOI: 10.5271/sjweh.4102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Indexed: 09/01/2023] Open
Abstract
OBJECTIVES The etiology of testicular germ cell tumors (TGCT) is suspected to be related to prenatal environmental risk factors. Some solvents have potential endocrine disrupting or carcinogenic properties and may disrupt male genital development in utero. The aim of this study was to examine the association between parental occupational exposure to solvents and TGCT risk among their offspring. METHODS A French nationwide case-control study, TESTIS included 454 TGCT cases and 670 controls frequency-matched on region and 5-year age strata. Participants were interviewed via telephone and provided information on parental occupations at birth. Job-exposure matrices (JEM) developed in the French Matgéné program were used to assign exposure to five petroleum-based solvents, five solvents or groups of oxygenated solvents, and five chlorinated solvents. Odds ratios (OR) for TGCT and 95% confidence intervals (CI) were estimated using conditional logistic regression, adjusting for TGCT risk factors. RESULTS Occupational exposure to at least one solvent during the year of their son's birth was 41% among fathers and 21% among mothers. Paternal exposure to at least one solvent showed OR 0.89 (95% CI 0.68-1.15). Exposure to perchloroethylene (OR 1.41, 95% CI 0.55-3.61), methylene chloride (OR 1.13, 95% CI 0.54-2.34) and diesel/kerosene/fuel oil (OR 1.17, 95% CI 0.80-1.73) disclosed OR >1 but with low precision. Our results suggest a possible modest increase in non-seminoma risk for sons whose fathers were highly exposed to trichloroethylene (OR 1.44, 95% CI 0.79-2.63). Maternal exposure to at least one solvent showed OR 0.90 (95% CI 0.65-1.24). When stratifying by birth year, men born in the 1970s experienced an increased TGCT risk following maternal exposure to fuels and petroleum-based solvents (OR 2.74, 95% CI 1.11-6.76). CONCLUSION Overall, no solid association was found between parental occupational exposure to solvents and TGCT risk. The association found with maternal occupational exposure to fuels and petroleum solvents among older men needs further investigation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Béatrice Fervers
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France.
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Guth M, Coste A, Lefevre M, Deygas F, Danjou A, Ahmadi S, Dananché B, Pérol O, Boyle H, Schüz J, Bujan L, Metzler-Guillemain C, Giscard d'Estaing S, Teletin M, Ducrocq B, Frapsauce C, Olsson A, Charbotel B, Fervers B. Testicular germ cell tumour risk by occupation and industry: a French case-control study - TESTIS. Occup Environ Med 2023; 80:407-417. [PMID: 37230752 PMCID: PMC10314033 DOI: 10.1136/oemed-2022-108601] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 05/04/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVE Testicular germ cell tumours (TGCT) are the most common cancer in men of working age and its incidence has increased notably over the past 40 years. Several occupations have been identified as potentially associated with TGCT risk. The aim of this study was to further explore the relationship between occupations, industries and TGCT risk in men aged 18-45 years. METHODS The TESTIS study is a multicenter case-control study conducted between January 2015 and April 2018 in 20 of 23 university hospital centers in metropolitan France. A total of 454 TGCT cases and 670 controls were included. Full job histories were collected. Occupations were coded according to the International Standard Classification of Occupation 1968 version (ISCO-1968) and industry according to the 1999 version of Nomenclature d'Activités Française (NAF-1999). For each job held, ORs and 95% CIs were estimated using conditional logistic regression. RESULTS A positive association was observed between TGCT and occupation as agricultural, animal husbandry worker (ISCO: 6-2; OR 1.71; 95% CI (1.02 to 2.82)), as well as salesman (ISCO: 4-51; OR 1.84; 95% CI (1.20 to 2.82)). An increased risk was further observed among electrical fitters and related, electrical and electronics workers employed for 2 years or more (ISCO: 8-5; OR≥2 years 1.83; 95% CI (1.01 to 3.32)). Analyses by industry supported these findings. CONCLUSIONS Our findings suggest that agricultural, electrical and electronics workers, and salesmen workers experience an increased risk of TGCT. Further research is needed to identify the agents or chemicals in these high-risk occupations which are relevant in the TGCT development. TRIAL REGISTRATION NUMBER NCT02109926.
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Affiliation(s)
- Margot Guth
- UMRESTTE, Université Claude Bernard Lyon 1, Lyon, France
| | - Astrid Coste
- Radiation: Defense, Health, Environment, INSERM UMR1296, Lyon, France
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France
| | - Marie Lefevre
- UMRESTTE, Université Claude Bernard Lyon 1, Lyon, France
| | | | - Aurélie Danjou
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO), Lyon, France
| | - Shukrullah Ahmadi
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO), Lyon, France
| | - Brigitte Dananché
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France
| | - Olivia Pérol
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France
| | - Helen Boyle
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - Joachim Schüz
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO), Lyon, France
| | - Louis Bujan
- DEFE (Développement Embryonnaire, Fertilité, Environnement) INSERM 1202 Universités Montpellier et Toulouse 3, CECOS Hôpital Paule de Viguier, CHU de Toulouse, Toulouse, France
- Fédération Française des CECOS, Paris, France
| | - Catherine Metzler-Guillemain
- Fédération Française des CECOS, Paris, France
- Centre Clinico-Biologique d'AMP-CECOS, AP-HM La Conception University Hospital, Marseille, France
| | - Sandrine Giscard d'Estaing
- Fédération Française des CECOS, Paris, France
- CECOS de Lyon, Service de Médecine de la Reproduction, Hôpital Femme Mère Enfant, Bron, France
| | - Marius Teletin
- Fédération Française des CECOS, Paris, France
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch-Grafenstaden, France
| | - Berengere Ducrocq
- Fédération Française des CECOS, Paris, France
- CECOS Nord Lille, Hôpital Albert Calmette, Lille, France
| | - Cynthia Frapsauce
- Fédération Française des CECOS, Paris, France
- Médecine et Biologie de la Reproduction-CECOS, CHU Bretonneau, Tours, France
| | - Ann Olsson
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer/World Health Organization (IARC/WHO), Lyon, France
| | - Barbara Charbotel
- UMRESTTE, Université Claude Bernard Lyon 1, Lyon, France
- Service des Maladies Professionnelles, Hospices Civils de Lyon, Pierre Bénite, France
| | - Béatrice Fervers
- Radiation: Defense, Health, Environment, INSERM UMR1296, Lyon, France
- Prevention Cancer Environnement Departement, Centre Léon Bérard, Lyon, France
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6
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Ataei M, Abdollahi M. A systematic review of mechanistic studies on the relationship between pesticide exposure and cancer induction. Toxicol Appl Pharmacol 2022; 456:116280. [DOI: 10.1016/j.taap.2022.116280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/05/2022] [Accepted: 10/09/2022] [Indexed: 01/01/2023]
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7
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Faja F, Esteves S, Pallotti F, Cicolani G, Di Chiano S, Delli Paoli E, Lenzi A, Lombardo F, Paoli D. Environmental disruptors and testicular cancer. Endocrine 2022; 78:429-435. [PMID: 36036879 PMCID: PMC9637059 DOI: 10.1007/s12020-022-03171-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/08/2022] [Indexed: 01/01/2023]
Abstract
PURPOSE Testicular cancer (TC) is the most common malignancy among young adult males. The etiology is multifactorial, and both environmental and genetic factors play an essential role in the origin and development of this tumor. In particular, exposure to environmental endocrine disruptors (EEDs), resulting from industrialization and urbanization, seems crucial both in pre-and postnatal life. However, the lack of long-term studies on a wide caseload and the difficulty in evaluating their toxic effects in vivo make it challenging to establish a causal link. This review aims to discuss the main human epidemiological studies currently available in the literature to define a possible association between these chemicals and TC. METHODS A comprehensive Medline/PubMed and Embase search was performed, selecting all relevant, peer-reviewed papers in English published from 2002 to January 2022. Other relevant papers were selected from the reference lists. RESULTS To date, literature evidence is limited due to the scarcity and heterogeneity of human studies and shows controversial data, highlighting the complexity of the topic. However, most human epidemiological studies seem to point toward a correlation between EEDs exposure and TC. CONCLUSION Although the molecular mechanisms are not yet fully understood, the role of EEDs in TC onset is plausible, but several factors, such as the individual genetic background, the exposure time, and the complex mechanism of action of these chemicals, do not allow defining the causal link with certainty and make further studies necessary to investigate this complex topic.
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Affiliation(s)
- Fabiana Faja
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Sandro Esteves
- Andrology and Human Reproduction Clinic, Av. Dr. Heitor Penteado, 1464, Campinas, Brazil
- Faculty of Health, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Francesco Pallotti
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Gaia Cicolani
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Silvia Di Chiano
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Enrico Delli Paoli
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Andrea Lenzi
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Francesco Lombardo
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy
| | - Donatella Paoli
- Laboratory of Seminology-Sperm Bank "Loredana Gandini", Department of Experimental Medicine, "Sapienza" Università di Roma, Rome, Italy.
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8
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Ahmadi S, Guth M, Coste A, Bouaoun L, Danjou A, Lefevre M, Dananché B, Praud D, Van Tongeren M, Bujan L, Pérol O, Schüz J, Charbotel B, Fervers B, Olsson A. Paternal Occupational Exposure to Heavy Metals and Welding Fumes and Testicular Germ Cell Tumours in Sons in France. Cancers (Basel) 2022; 14:4962. [PMID: 36230885 PMCID: PMC9564333 DOI: 10.3390/cancers14194962] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/28/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
Testicular cancer is the most common cancer in young men. Its causes are largely unknown, although prenatal occupational and environmental exposures have been suggested. We investigated paternal occupational exposure to heavy metals and welding fumes and the risk of testicular germ cell tumors (TGCT) in their offspring. A total of 454 cases and 670 controls were included from a French nationwide case-control study. The INTEROCC job exposure matrix was used to assign occupational exposures (cadmium, chromium, iron, nickel, lead, and welding fumes) to the fathers' jobs. Odds ratios (ORs) for TGCT were estimated using conditional logistic regression models for frequency-matched sets. Three complementary analytical approaches were used: (1) single-agent analysis, (2) analysis by groups, and (3) principal component analysis (PCA). The proportion of paternal exposure to different heavy metals and welding fumes ranged from 0.7% (cadmium) to 11.3% (lead). Based on PCA, three principal components explained 93.5% of the cumulative variance. No associations were found between heavy metals or welding fumes and TGCT. In this study, paternal occupational exposure to heavy metals or welding fumes was not associated with TGCT development in their sons.
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Affiliation(s)
- Shukrullah Ahmadi
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer IARC/WHO, 150 cours Albert Thomas, CEDEX 08, 69372 Lyon, France
| | - Margot Guth
- UMRESTTE, UMR T 9405, IFSTTAR, Lyon 1 University, Eiffel University, 69008 Lyon, France
| | - Astrid Coste
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, 69008 Lyon, France
- INSERM UMR1296 Radiation: Defense, Health, Environment, 69008 Lyon, France
| | - Liacine Bouaoun
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer IARC/WHO, 150 cours Albert Thomas, CEDEX 08, 69372 Lyon, France
| | - Aurélie Danjou
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer IARC/WHO, 150 cours Albert Thomas, CEDEX 08, 69372 Lyon, France
| | - Marie Lefevre
- UMRESTTE, UMR T 9405, IFSTTAR, Lyon 1 University, Eiffel University, 69008 Lyon, France
| | - Brigitte Dananché
- INSERM UMR1296 Radiation: Defense, Health, Environment, 69008 Lyon, France
| | - Delphine Praud
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, 69008 Lyon, France
- INSERM UMR1296 Radiation: Defense, Health, Environment, 69008 Lyon, France
| | - Martie Van Tongeren
- Centre for Human Exposure Science, Institute of Occupational Medicine (IOM), Research Avenue North, Riccarton, Edinburgh EH14 4AP, UK
| | - Louis Bujan
- DEFE (Développement Embryonnaire, Fertilité, Environnement) INSERM 1203, Universités Montpellier et Toulouse 3, 31000 Toulouse, France
- CECOS Hôpital Paule de Viguier, CHU de Toulouse, 31059 Toulouse, France
- Fédération Française des CECOS, 75014 Paris, France
| | - Olivia Pérol
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, 69008 Lyon, France
- INSERM UMR1296 Radiation: Defense, Health, Environment, 69008 Lyon, France
| | - Joachim Schüz
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer IARC/WHO, 150 cours Albert Thomas, CEDEX 08, 69372 Lyon, France
| | - Barbara Charbotel
- UMRESTTE, UMR T 9405, IFSTTAR, Lyon 1 University, Eiffel University, 69008 Lyon, France
| | - Béatrice Fervers
- Département Prévention, Cancer et Environnement, Centre Léon Bérard, 69008 Lyon, France
- INSERM UMR1296 Radiation: Defense, Health, Environment, 69008 Lyon, France
| | - Ann Olsson
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer IARC/WHO, 150 cours Albert Thomas, CEDEX 08, 69372 Lyon, France
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