Abstract:
:The types of biological response to an environmental agent can depend on dose, thus in this case a family of widely different dose-response relationships would be expected. For those situations where the magnitude of the effect may be determined on probabilistic grounds as a function of dose ("stochastic" model), no particular dose-response relationship-may necessarily be inferred; the appropriate model still depends on the biological processes under consideration. Some examples of different conclusions concerning dose-response are given for studies of effects of lead and carbon monoxide at low doses. With increasingly sensitive measures of physiologic responses, these can be detected at exposures close to background, but for many cases the question remains whether an observed response really represents a true toxic effect. The application of epidemiologic data for regulatory purposes may depend on identification of the response to an agent appropriate for preventive measures. The conclusions one reaches about studies of health effects of environmental agents can be markedly influenced by the types of health endpoints under consideration.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Radford EPdoi
10.1289/ehp.814245subject
Has Abstractpub_date
1981-12-01 00:00:00pages
45-50eissn
0091-6765issn
1552-9924journal_volume
42pub_type
杂志文章abstract::We have demonstrated that the pyrolysis products of amino acids and proteins in model systems are mutagenic. The mutagenic principles in the pyrolyzates of amino acids have been isolated and identified by Sugimura et al. We have isolated and identified amino-alpha-carbolines from pyrolyzed soybean globulin as mutagens...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.866755
更新日期:1986-08-01 00:00:00
abstract::We report the results of a coordinated mitigation effort aimed at reducing arsenic (As) exposure in three counties of Guizhou province, China. Mitigation occurred in 2005 and encompassed 21 villages with 47,000 inhabitants, who were exposed to high levels of As in their diet through consumption of As-contaminated chil...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9273
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND:The association of DDT (dichlorodiphenyltrichloroethane) with breast cancer is controversial, but animal studies directly linking DDT to risk are lacking. Concerns with DDT reside in its environmental persistence, bioaccumulation in breast adipose tissue, and endocrine-disrupting actions. Whereas most attent...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1104327
更新日期:2012-08-01 00:00:00
abstract::The lungs may be exposed to potentially toxic metabolites that are either formed in situ or which are present in the circulation. Therefore, pulmonary injury may be a prominent effect of certain classes of chemicals that undergo bioactivation in the body. The specific types of lung cells damaged may depend upon factor...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.845547
更新日期:1984-04-01 00:00:00
abstract::Diffuse pulmonary fibrosis is associated with bleomycin administration to humans. The sequential reactions of lung cells to this drug have now been investigated in mice following injection of 20 mg/kg bleomycin twice per week for 4 to 8 weeks. Cytoplasmic and subendothelial edema was first observed in large vessels an...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.7616119
更新日期:1976-08-01 00:00:00
abstract::The role of the physical environment as a determinant of health is a major concern reported by the general public as well as by many policymakers. However, it remains one of the health determinants for which few available measures or indicators are readily available. This lack of data is compounded by the fact that ev...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109s6817
更新日期:2001-12-01 00:00:00
abstract::Biological monitoring of genotoxic hazard in the rubber industry was performed in 19 male workers and 20 age-matched controls in a local health unit in northern Italy. Peripheral blood lymphocytes were analyzed for the presence of DNA damage (single-cell microgel-electrophoresis, or comet assay) and for cytogenetic pa...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.96104s3543
更新日期:1996-05-01 00:00:00
abstract:OBJECTIVE:Animal feeding practices in the United States have changed considerably over the past century. As large-scale, concentrated production methods have become the predominant model for animal husbandry, animal feeds have been modified to include ingredients ranging from rendered animals and animal waste to antibi...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.9760
更新日期:2007-05-01 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:BACKGROUND:Exposures to high-dose ionizing radiation and high-dose rate ionizing radiation are established risk factors for childhood acute leukemia (AL). The risk of AL following exposure to lower doses due to natural background radiation (NBR) has yet to be conclusively determined. METHODS:AL cases diagnosed over 19...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP296
更新日期:2017-04-01 00:00:00
abstract::As part of a cohort study of the effects of chronic exposure to lead on pregnancy outcome and child development, lead concentrations in the umbilical cord and placental tissues (body and membranes) from 9 late fetal deaths, 23 preterm births, and 18 births associated with premature rupture of the amniotic membranes we...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.90-1519491
更新日期:1991-01-01 00:00:00
abstract::Soil samples were collected from 28 fields which had received manure from Michigan's most highly contaminated dairy herds. The number of fields in each concentration range of PBB in soil were: 2, not detectable; 15, 0.0 to 8.0 ppb; 6, 14-102 ppb, and 5, 153 to 371 ppb. Plant tissue sampled from the 10 most highly cont...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.78231
更新日期:1978-04-01 00:00:00
abstract:BACKGROUND:Exceptional aging, defined as reaching age 85 years, shows geographic inequalities that may depend on local environmental conditions. Links between particulate pollution-a well-recognized environmental risk factor-and exceptional aging have not been investigated. OBJECTIVES:We conducted a nationwide analysi...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP197
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:Although accumulating evidence suggests that exposure to organochlorine pesticides and polychlorinated biphenyls (PCBs) may contribute to the development of prostate cancer, few investigations have used biological samples to classify exposure to specific organochlorines. To our knowledge, this is the first p...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.0901214
更新日期:2010-05-01 00:00:00
abstract::Many substances are active in in vitro tests for estrogenic activity, but data from multigenerational and other toxicity studies are not available for many of those substances. Controversy has arisen, therefore, concerning the likelihood of adverse health effects. Based on a toxic equivalence factor risk assessment ap...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.97105s3655
更新日期:1997-04-01 00:00:00
abstract:BACKGROUND:Evidence indicates that air pollution contributes to cardiopulmonary mortality. There is ongoing debate regarding the size and shape of the pollution–mortality exposure–response relationship. There are also growing appeals for estimates of pollution–mortality relationships that use public data and are based ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP4438
更新日期:2019-07-01 00:00:00
abstract::Individual variability in human arsenic metabolism has been reported frequently in the literature. This variability could be an underlying determinant of individual susceptibility to arsenic-induced disease in humans. Recent analysis revealing familial aggregation of arsenic metabolic profiles suggests that genetic fa...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.6420
更新日期:2003-08-01 00:00:00
abstract::Human milk is a repository for certain classes of long-lived, fat-soluble environmental contaminant chemicals. Some members of this class, such as the chlorinated pesticides and the chlorinated biphenyls, can be expected to be present at chemical waste disposal sites. Analysis of samples of breast milk obtained from w...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.834887
更新日期:1983-02-01 00:00:00
abstract::Studies of structure-activity relationships and molecular mechanisms of action are fundamental to our understanding of the harmful effects of chemicals on the environment and their more direct effects on human health. It is important to identify factors that determine toxicological effects of foreign chemicals in biol...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.85615
更新日期:1985-09-01 00:00:00
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 popula...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1307309
更新日期:2014-05-01 00:00:00
abstract::The hexavalent oxidation state of chromium [Cr(VI)] is a well-established human carcinogen, although the mechanism of cancer induction is currently unknown. Intracellular reduction of Cr(VI) forms Cr(V), which is thought to play a fundamental role in the mechanism of DNA damage by this carcinogen. Two separate pathway...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.02110s5725
更新日期:2002-10-01 00:00:00
abstract::The metabolism of polybrominated biphenyls (PBBs) was studied in vitro by using rat liver microsomes in the presence of NADPH and atmospheric O2. Quantitative recoveries of all PBBs were obtained after incubations with control or 3-methylcholanthrene (MC) induced microsomes. Of the twelve major components, losses of o...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.782351
更新日期:1978-04-01 00:00:00
abstract::Clinical and experimental studies on respiratory involvement and alterations in immune status were carried out. Respiratory distress occurring in these patients has improved gradually for 14 years but still remains. Copious expectoration at an early stage of the disease may be related to the fact that a number of disc...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.59-1568074
更新日期:1985-02-01 00:00:00
abstract::Because of its unique geology, Minnesota can be divided into four agricultural regions: south-central region one (corn, soybeans); west-central region two (wheat, corn, soybeans); northwest region three (wheat, sugar beets, potatoes); and northeast region four (forested and urban in character). Cancer mortality (1980-...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.99107205
更新日期:1999-03-01 00:00:00
abstract::As a result of the Leadership Conference on Biomedical Research and the Environment, the Facilities Committee focused its work on the development of best environmental practices at biomedical research facilities at the university and independent research facility level as well as consideration of potential involvement...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.00108s6945
更新日期:2000-12-01 00:00:00
abstract::This article provides an overview of the problem of genetic susceptibility to childhood cancer with a particular emphasis on problems with ascertaining inherited cancer risk and the role of tumor-suppressor gene mutations in cancer predispositions. The association between neurofibromatosis type 1 and childhood leukemi...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.98106801
更新日期:1998-06-01 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
abstract:BACKGROUND:Anogenital distance (AGD) in animals is a sensitive biomarker of fetal endocrine disruption and the associated testicular dysgenesis syndrome (TDS). However, AGD in human infants with cryptorchidism and hypospadias, which are potential manifestations of TDS during childhood, is not clearly described. OBJECT...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1307178
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND:Perchlorate, thiocyanate, and nitrate are sodium/iodide symporter (NIS) inhibitors that block iodide uptake into the thyroid, thus affecting thyroid function. Thyroid dysfunction can adversely affect somatic growth and development in children. To our knowledge, no studies have examined effects of NIS inhibit...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1409309
更新日期:2016-04-01 00:00:00
abstract:BACKGROUND:Previous research suggests perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) may be associated with adverse pregnancy outcomes. OBJECTIVE:We conducted a population-based study of PFOA and PFOS and birth outcomes from 2005 through 2010 in a Mid-Ohio Valley community exposed to high levels of...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1206372
更新日期:2013-10-01 00:00:00