Abstract:
:Environmental chemicals that function as estrogens have been suggested to be associated with an increase in disease and dysfunctions in animals and humans. To characterize chemicals that may act as estrogens in humans, we have compared three in vitro assays which measure aspects of human estrogen receptor (hER)-mediated estrogenicity. Chemicals were first tested for estrogen-associated transcriptional activity in the yeast estrogen screen (YES). This was created by expressing hER and two estrogen response elements linked to the lacZ gene in yeast. Second, chemicals that were tested in YES were then assayed for direct interaction with hER in a competition binding assay. Third, chemicals were tested in the estrogen-responsive MCF-7 human breast cancer cell line transiently transfected with a plasmid containing two estrogen response elements linked to the luciferase gene. Together, these assays have identified two metabolites of DDT, o,p'-DDD and p,p'-DDD, that have estrogenic activity. Interestingly, previous studies had reported that the DDD metabolites were nonestrogenic in whole animal models. Alachlor, the most frequently used herbicide in the United States, cis-nonachlor, and trans-nonachlor displayed weak estrogenic activity in the combined assays. The antifungal agent benomyl had no estrogenic activity. We propose that a combination of in vitro assays can be used in conjunction with whole animal models for a more complete characterization of chemicals with estrogenic activity.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Klotz DM,Beckman BS,Hill SM,McLachlan JA,Walters MR,Arnold SFdoi
10.1289/ehp.961041084subject
Has Abstractpub_date
1996-10-01 00:00:00pages
1084-9issue
10eissn
0091-6765issn
1552-9924journal_volume
104pub_type
杂志文章abstract::Following our first report on elevated polybrominated diphenyl ether (PBDE) concentrations in California women, we expanded our investigation to include diverse groups of local women. We analyzed additional adipose and serum samples collected in the late 1990s from San Francisco Bay Area women participating in a breas...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.6220
更新日期:2003-07-01 00:00:00
abstract::In estimating the cancer mortality risk for radiation workers it is conventional to use data obtained from the populations exposed to radiation as a result of the atomic bomb blast in Hiroshima and Nagasaki. This A-bomb experience resulted in relatively high doses of radiation and short periods of exposure. The availa...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.97105s61603
更新日期:1997-12-01 00:00:00
abstract::An association between human illness and exposure to Pfiesteria was first observed among laboratory personnel working with the microorganism. In 1997, in the setting of Pfiesteria activity on the Pocomoke River in Maryland, difficulties with learning and memory were epidemiologically associated with high-level exposur...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.01109s5787
更新日期:2001-10-01 00:00:00
abstract:BACKGROUND:We characterized an endocrine disruptor from ground corncob bedding material that interferes with male and female sexual behavior and ovarian cyclicity in rats and stimulates estrogen receptor (ER)-positive and ER-negative breast cancer cell proliferation. The agents were identified as an isomeric mixture of...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.10659
更新日期:2007-12-01 00:00:00
abstract::Short-term increases in ambient air pollution have been associated with an increased incidence of acute cardiac events. We assessed the effect of inhalation exposure to concentrated ambient particles (CAPs) on myocardial ischemia in a canine model of coronary artery occlusion. Six mongrel dogs underwent thoracotomy fo...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.5775
更新日期:2003-04-01 00:00:00
abstract::The Clean Air Act requires that sensitive subgroups of exposed populations be protected from adverse health effects of air pollution exposure. Hence, data suggesting the existence of sensitive subgroups can have an important impact on regulatory decisions. Some investigators have interpreted differences among individu...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.90-1519500
更新日期:1991-01-01 00:00:00
abstract::The articles in this monograph focus on the mechanisms whereby ambient particulate matter (PM) and co-pollutants deposited in the respiratory tract cause cardiovascular and systemic effects, especially in persons with preexisting conditions such as allergic hyperresponsiveness and pulmonary, cardiac, and vascular dise...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109s4479
更新日期:2001-08-01 00:00:00
abstract::Metals continually rank at the top of the U.S. Environmental Protection Agency's annual list of agents that pose the greatest hazard to the people of the United States. Metals aren't going away, either. They do not biodegrade, and they often concentrate in human and animal cells and tissue. Many metals are known human...
journal_title:Environmental health perspectives
pub_type: 新闻
doi:10.1289/ehp.99107a244
更新日期:1999-05-01 00:00:00
abstract:OBJECTIVES:We evaluated the association between drinking-water disinfection by-products and preterm births using improved exposure assessment and more appropriate analysis methods than used in prior studies. METHODS:During 1999-2001, vital record data were obtained for a large, racially diverse population residing in ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9394
更新日期:2007-02-01 00:00:00
abstract:BACKGROUND:Exposure to certain phenols is ubiquitous because of their use in many consumer and personal care products. However, predictors of exposure have not been well characterized in most populations. OBJECTIVES:We sought to identify predictors of exposure and to assess the reproducibility of phenol concentrations...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1306830
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:A critical question regarding the association between short-term exposure to ozone and mortality is the extent to which this relationship is confounded by ambient exposure to particles. OBJECTIVES:We investigated whether particulate matter < 10 and < 2.5 microm in aerodynamic diameter (PM(10) and PM(2.5)) i...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.10108
更新日期:2007-11-01 00:00:00
abstract::Ambient monitoring of acid aerosols in four U.S. cities and in a rural region of southern Ontario clearly show distinct periods of strong acidity. Measurements made in Kingston, TN, and Steubenville, OH, resulted in 24-hr H+ ion concentrations exceeding 100 nmole/m3 more than 10 times during summer months. Periods of ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.897943
更新日期:1989-02-01 00:00:00
abstract:BACKGROUND:Chronic exposure to traffic-related air pollution (TRAP) may contribute to premature mortality, but few studies to date have addressed this topic. OBJECTIVES:In this study we assessed the association between TRAP and mortality in Toronto, Ontario, Canada. METHODS:We collected nitrogen dioxide samples over ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.11533
更新日期:2009-05-01 00:00:00
abstract::Exposure to air polluted with particles less than 2.5 micron in size is associated epidemiologically with adverse cardiopulmonary health consequences in humans. The goal of this study was to characterize human pulmonary responses to controlled experimental high-dose exposure to fine and ultrafine magnesium oxide parti...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.971051234
更新日期:1997-11-01 00:00:00
abstract::There is a significant public health concern about the potential effects of occupational exposure to toxic substances on reproductive outcomes. Several toxicants with reported reproductive and developmental effects are still in regular commercial or therapeutic use and thus present potential exposure to workers. Examp...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.5548
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND:Exposure mixtures frequently occur in data across many domains, particularly in the fields of environmental and nutritional epidemiology. Various strategies have arisen to answer questions about exposure mixtures, including methods such as weighted quantile sum (WQS) regression that estimate a joint effect o...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP5838
更新日期:2020-04-01 00:00:00
abstract::The populations of the developed nations of the world exhibit an increase in blood pressure with age, while in primitive societies blood pressure remains relatively constant throughout adult life. Hypertension may be a complex of diseases all having the same clinical manifestations but not being caused necessarily by ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.792935
更新日期:1979-04-01 00:00:00
abstract::In this study we investigated the risk of hearing loss among workers exposed to both toluene and noise. We recruited 58 workers at an adhesive materials manufacturing plant who were exposured to both toluene and noise [78.6-87.1 A-weighted decibels; dB(A)], 58 workers exposed to noise only [83.5-90.1 dB(A)], and 58 ad...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8959
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:The nontherapeutic use of antibiotics in swine feed can select for antibiotic resistance in swine enteric bacteria. Leaking swine waste storage pits and the land-application of swine manure can result in the dispersion of resistant bacteria to water sources. However, there are few data comparing levels of re...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9770
更新日期:2007-07-01 00:00:00
abstract::Chemicals, including commonly used drugs (e.g., penicillin, meprobamate, pyridium, and mercaptomerin) penetrate and persist for some time in the ovarian follicular fluid at concentrations approximately similar to that of the serum. Information as to the penetration of chemicals into the granulosa cells and into the oo...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.782425
更新日期:1978-06-01 00:00:00
abstract::In this paper we report yields, identities, and mutagenicities of products from heating a polycyclic aromatic hydrocarbon (PAH)-contaminated, Superfund-related synthetic soil matrix without exogenous oxygen. We heated batch samples of soil pretreated with 5.08 wt% (by weight) pyrene in a tubular furnace under a consta...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.00108709
更新日期:2000-08-01 00:00:00
abstract::The physiological function of copper(I)-metallothionein is not well understood. The respiratory function of hemocyanin, a copper(I)-containing respiratory protein found in the hemolymph of many invertebrates, has been known a long time. However, the mechanism by which Cu(I) is inserted into the oxygen-binding site of ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.866593
更新日期:1986-03-01 00:00:00
abstract::A brief description of chromosome aberrations and sister chromatid exchange (SCE) as cytogenetic endpoints for evaluation of DNA damaging agents is presented. Problems associated with the use of cytogenetic assays as population monitors of radiation and chemical exposures are discussed. Adequate cell sample size requi...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.8142107
更新日期:1981-12-01 00:00:00
abstract::The presence of mycotoxins in grains is well documented. Workers in grain handling occupations are commonly exposed to grain dust aerosols. Work in our laboratory has shown that T-2 toxin is highly toxic to rat alveolar macrophages in vitro, causing loss of viability, release of radiolabeled chromium, inhibition of ma...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.866645
更新日期:1986-04-01 00:00:00
abstract::Pyrethroids are important insecticides used in agriculture, forestry, horticulture, and in the home. In humans, they are rapidly metabolized and renally eliminated. In numerous studies, pyrethroid metabolites have been detected in urine after occupational exposure to insecticides. In this study, we used a new, reliabl...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109213
更新日期:2001-03-01 00:00:00
abstract::In this study we examined the impact of weather variability and tides on the transmission of Barmah Forest virus (BFV) disease and developed a weather-based forecasting model for BFV disease in the Gladstone region, Australia. We used seasonal autoregressive integrated moving-average (SARIMA) models to determine the c...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8568
更新日期:2006-05-01 00:00:00
abstract::Proto-oncogenes are cellular genes that are expressed during normal growth and developmental processes. Altered versions of normal proto-oncogenes have been implicated in the development of human neoplasia. In this report, we show the detection of activated proto-oncogenes in various spontaneous and chemically induced...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.877581
更新日期:1987-11-01 00:00:00
abstract::In this paper we give some examples of using databases of genotoxicity and carcinogenicity for quantitative and qualitative correlation studies between short-term tests and carcinogenicity. The quality of the databases is obviously important, but one of the major deficiencies of present databases is that they are too ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.919661
更新日期:1991-12-01 00:00:00
abstract::In this article we summarize the results of a series of studies that measured the relative bioavailability (RBA) of lead in a variety of soil and soil-like test materials. Reference material (Pb acetate) or Pb-contaminated soils were administered orally to juvenile swine twice a day for 15 days. Blood samples were col...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8852
更新日期:2006-08-01 00:00:00
abstract::The combination of cigarette smoke and high-level occupational asbestos exposure produces a synergistic increase in the incidence of lung cancer; however, smoking does not affect the incidence of mesothelioma. Here we present the results of tests of two theories that have been proposed to explain this phenomenon; name...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.93101326
更新日期:1993-09-01 00:00:00