Abstract:
BACKGROUND:Few human studies have examined bisphenol A (BPA) exposure in relation to semen quality and reproductive hormones in men, and results are divergent. OBJECTIVES:We examined associations between urinary BPA concentration and reproductive hormones, as well as semen quality, in young men from the general population. METHODS:Our study population consisted of 308 young men from the general population. Urinary BPA concentration was measured by isotope dilution TurboFlow-liquid chromatography-tandem mass spectrometry. We used multiple linear regression analysis to estimate associations between BPA concentration and reproductive hormones and semen quality, adjusting for confounding factors. RESULTS:We found that 98% of the men had detectable urinary levels of BPA. Median (5th-95th percentiles) BPA concentration was 3.25 ng/mL (0.59-14.89 ng/mL). Men with BPA concentrations above the lowest quartile had higher concentrations of serum testosterone, luteinizing hormone (LH), estradiol, and free testosterone compared with the lowest quartile (p trend ≤ 0.02). Men in the highest quartile of BPA excretion had on average 18% higher total testosterone (95% CI: 8, 28%), 22% higher LH (95% CI: 6, 39%), and 13% higher estradiol (95% CI: 4, 24%) compared with lowest quartile. Men in the highest quartile of BPA also had significantly lower percentage progressive motile spermatozoa compared with men in the lowest quartile (-6.7 percentage points, 95% CI: -11.76, -1.63). BPA was not associated with other semen parameters. Adjusting for dietary patterns did not influence the results. CONCLUSIONS:The pattern of associations between BPA and reproductive hormones could indicate an antiandrogenic or antiestrogenic effect, or both, of BPA on the hypothalamic-pituitary-gonadal hormone feedback system, possibly through a competitive inhibition at the receptor level. However, additional research is needed to confirm our findings and to further test the suggested potential mechanisms.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Lassen TH,Frederiksen H,Jensen TK,Petersen JH,Joensen UN,Main KM,Skakkebaek NE,Juul A,Jørgensen N,Andersson AMdoi
10.1289/ehp.1307309subject
Has Abstractpub_date
2014-05-01 00:00:00pages
478-84issue
5eissn
0091-6765issn
1552-9924journal_volume
122pub_type
杂志文章abstract::We have previously reported that rats are resilient to the hepatotoxic and lethal combination of chlordecone (CD) and carbon tetrachloride (CCl4) during early postnatal development. The overall findings pointed to stimulated cell division and tissue repair mechanisms as the underlying cause of resistance. The objectiv...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.98106597
更新日期:1998-09-01 00:00:00
abstract::The additives and contaminants which occur in textile fibers vary widely, depending on the type of fiber and the pretreatment which it has received. Synthetic fibers such as nylon and polyester contain trace amounts of contaminants such as catalysts and catalyst deactivators which remain after the synthesis of the bas...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.751141
更新日期:1975-06-01 00:00:00
abstract::Fish and other seafood may contain organic mercury but also beneficial nutrients such as n-3 polyunsaturated fatty acids. We endeavored to study whether maternal fish consumption during pregnancy harms or benefits fetal brain development. We examined associations of maternal fish intake during pregnancy and maternal h...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8041
更新日期:2005-10-01 00:00:00
abstract:BACKGROUND:Despite experimental evidence, most epidemiologic studies to date have not supported an association between exposure to persistent organic pollutants (POP) and breast cancer incidence in humans. This may be attributable to difficulties in estimating blood/tissue POP concentration at critical time periods of ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.10917
更新日期:2008-07-01 00:00:00
abstract::Potential public health effects associated with exposure to metal emissions from hazardous waste incinerators through noninhalation pathways were evaluated. Instead of relying on modeling the movement of toxicants through various environmental media, an approach based on estimating changes from baseline levels of expo...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.94102105
更新日期:1994-06-01 00:00:00
abstract::Health is defined as homeostasis of the cellular ecology, and a state where there has not been an inordinate loss, reversible or irreversible, of the structural and/or functional reserves of the body. An adverse health effect is defined as the causation, promotion, facilitation and/or exacerbation of a structural and/...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8352177
更新日期:1983-10-01 00:00:00
abstract::The binary, ternary, quaternary, and quintary interactions of a five-component mixture of carcinogenic environmental polycyclic aromatic hydrocarbons (PAHs) using response surface analyses are described. Initially, lung tumor dose-response curves in strain A/J mice for each of the individual PAHs benzo[a]pyrene (B[a]P...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.98106s61337
更新日期:1998-12-01 00:00:00
abstract::The phenylphosphonothioate insecticides EPN and leptophos, and several analogs, were evaluated with respect to their delayed neurotoxic effects in hens and their environmental behavior in a terrestrial-aquatic model ecosystem. Acute toxicity to insects was highly correlated with sigma sigma of the substituted phenyl g...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8036187
更新日期:1980-06-01 00:00:00
abstract:BACKGROUND:Human epidemiological and animal studies suggest that developmental exposure to contaminants that activate the aryl hydrocarbon receptor (AHR) lead to suppression of immune system function throughout life. The persistence of immune deficiency throughout life suggests that the cellular target of AHR activatio...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1509820
更新日期:2016-07-01 00:00:00
abstract:BACKGROUND:Environmental heat exposure is a public health concern. The impacts of environmental heat on mortality and morbidity at the population scale are well documented, but little is known about specific exposures that individuals experience. OBJECTIVES:The first objective of this work was to catalyze discussion o...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP556
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND:A growing body of evidence indicates a relationship between household indoor air pollution from cooking fires and adverse neonatal outcomes, such as low birth weight (LBW), in resource-poor countries. OBJECTIVE:We examined the effect of reduced wood smoke exposure in pregnancy on LBW of Guatemalan infants i...
journal_title:Environmental health perspectives
pub_type: 杂志文章,随机对照试验
doi:10.1289/ehp.1002928
更新日期:2011-10-01 00:00:00
abstract::Acute exposures to isobutane, propane, F-12, and F-11 in concentrations of 250, 500, or 1000 ppm for periods of 1 min to 8 hr did not produce any untoward physiological effects as determined by the methods employed which included serial EKG's and continuous monitoring of modified V5 by telemetry during exposure. Repet...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.7826275
更新日期:1978-10-01 00:00:00
abstract::Data from experiments on the induction of specific-locus mutations in model systems are used in genetic risk assessment to estimate potential adverse effects in the human population. In such assessments with radiation or chemical mutagens, the following information is required: a) spontaneous and induced forward-mutat...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.94102s183
更新日期:1994-01-01 00:00:00
abstract::Implications of the multistage theory of carcinogenesis for evaluating the effect of exposure to carcinogens in the workplace are described. This theory predicts different patterns of excess risk related to duration of exposure, age at initial exposure, and follow-up time since exposure stopped, depending upon which s...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8350293
更新日期:1983-04-01 00:00:00
abstract::Biomarkers are desirable for quantitating human exposure to environmental tobacco smoke (ETS) and for predicting potential health risks for exposed individuals. A number of biomarkers of ETS have been proposed. At present cotinine, measured in blood, saliva, or urine, appears to be the most specific and the most sensi...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.99107s2349
更新日期:1999-05-01 00:00:00
abstract::This article briefly summarizes the epidemiology of the health effects of fine particulate air pollution, provides an early, somewhat speculative, discussion of the contribution of epidemiology to evaluating biologic mechanisms, and evaluates who's at risk or is susceptible to adverse health effects. Based on prelimin...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.108-1637679
更新日期:2000-08-01 00:00:00
abstract::The available data on the influence of selenium on the toxicity of methylmercury and of methylmercury on selenium as a nutrient and toxic agent are reviewed. Selenium as selenite has a relative protective effect on acute and subacute toxicity of methylmercury in the rat and the quail. The protective mechanism is far f...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.782557
更新日期:1978-08-01 00:00:00
abstract::This work group report addresses the central question: What are the critical windows during development (preconception through puberty) when exposure to xenobiotics may have the greatest adverse impact on subsequent reproductive health? The reproductive system develops in stages, with sex-specific organogenesis occurr...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.00108s3505
更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:Traffic noise has been associated with cardiovascular and metabolic disorders. Potential modes of action are through stress and sleep disturbance, which may lead to endocrine dysregulation and overweight. OBJECTIVES:We aimed to investigate the relationship between residential traffic and railway noise and a...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1409052
更新日期:2016-03-01 00:00:00
abstract::The findings of studies investigating whether exposures to ionizing radiation before birth, either pre- or post-conception, increase the risk of childhood cancer have provoked much scientific controversy. An epidemiological association between the abdominal exposure of pregnant women to diagnostic X-rays and childhood...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.951031018
更新日期:1995-11-01 00:00:00
abstract:BACKGROUND:Associations between airborne particles and health outcomes have been documented worldwide; however, there is limited information regarding health effects associated with different particle sizes. OBJECTIVES:We explored the association between size-fractionated particle number concentrations (PNCs) and dail...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1206398
更新日期:2013-10-01 00:00:00
abstract::Neurobehavioral toxicology is now established as a core discipline of the environmental health sciences. Despite its recognized scientific prowess, stemming from its deep roots in psychology and neuroscience and its acknowledged successes, it faces additional demands and challenges. The latter, in fact, are a product ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.96104s2173
更新日期:1996-04-01 00:00:00
abstract::Congress has demonstrated interest in toxic compensation legislation, but not enough agreement to make significant progress. Advocates of reform claim that the legal system is heavily weighed against victims who seek compensation through the courts. Proposed reforms include a compensation fund and a cause of action in...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8562365
更新日期:1985-10-01 00:00:00
abstract::Occupational cancer research methods was identified in 1996 as 1 of 21 priority research areas in the National Occupational Research Agenda (NORA). To implement NORA, teams of experts from various sectors were formed and given the charge to further define research needs and develop strategies to enhance or augment res...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.111-1241299
更新日期:2003-01-01 00:00:00
abstract::Serious problems emerge when evaluating evidence on lead neurotoxicity in children. The extent of these problems and ways to control them were explored in a study of 1291 children from the first class in the schools of Aarhus municipality, Denmark. The lead retention in circumpulpal dentin in shed deciduous teeth was ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.94-1567959
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:The National Institutes of Health's Environmental influences on Child Health Outcomes (ECHO) initiative aims to understand the impact of environmental factors on childhood disease. Over 40,000 chemicals are approved for commercial use. The challenge is to prioritize chemicals for biomonitoring that may prese...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP5133
更新日期:2019-12-01 00:00:00
abstract::Studies conducted by the National Toxicology Program on the chronic toxicity of benzene indicated that B6C3F1 mice were more sensitive to the carcinogenic effects of benzene than were F344 rats. A physiological model was developed to describe the uptake and metabolism of benzene in rats and mice. Our objective was to ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.898243
更新日期:1989-07-01 00:00:00
abstract::In vivo detection of free radicals on a quantitative basis is essential for an establishment of their role in membrane, protein, and cell and tissue damage. This article compares optical methods, including chemiluminescence, electron paramagnetic resonance (EPR) and NMR methods for the study of free radicals and free ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.94102s1029
更新日期:1994-12-01 00:00:00
abstract:BACKGROUND:According to a wide variety of analyses and projections, the potential effects of global climate change on human health are large and diverse. The U.S. National Institutes of Health (NIH), through its basic, clinical, and population research portfolio of grants, has been increasing efforts to understand how ...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.1104518
更新日期:2013-04-01 00:00:00
abstract::Nitrate contamination of drinking water implies a genotoxic risk to man due to the endogenous formation of carcinogenic N-nitroso compounds from nitrate-derived nitrite. Thus far, epidemiological studies have presented conflicting results on the relation of drinking water nitrate levels with gastric cancer incidence. ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.94-1567968
更新日期:1991-08-01 00:00:00