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 rodent tumors. The majority of activated proto-oncogenes found in these tumors are members of the ras gene family and have been activated by a point mutation. Characterization of the activating mutation may be useful in determining whether this proto-oncogene was activated by direct interaction of the chemical with the DNA. Comparison of activating lesions in spontaneous versus chemically induced tumors should be helpful in determining whether the chemical acts via a genotoxic or a nongenotoxic mechanism. All of this information may be helpful in the assessment of potential carcinogenic hazards of human exposure to chemicals.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Stowers SJ,Maronpot RR,Reynolds SH,Anderson MWdoi
10.1289/ehp.877581subject
Has Abstractpub_date
1987-11-01 00:00:00pages
81-6eissn
0091-6765issn
1552-9924journal_volume
75pub_type
杂志文章,评审abstract:BACKGROUND:Industrial air pollution is a public health hazard. Previous evidence documented increased respiratory symptoms and hospitalizations in children who live near the factories in the largest chipboard manufacturing district in Italy (Viadana). OBJECTIVES:We evaluated the association of outdoor exposure to form...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1307259
更新日期:2014-06-01 00:00:00
abstract::We present a model of the distribution of noise annoyance with the mean varying as a function of the noise exposure. Day-night level (DNL) and day-evening-night level (DENL) were used as noise descriptors. Because the entire annoyance distribution has been modeled, any annoyance measure that summarizes this distributi...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109409
更新日期:2001-04-01 00:00:00
abstract::A comprehensive effort was undertaken to identify articles demonstrating chemical hormesis. Nearly 4000 potentially relevant articles were retrieved from preliminary computer database searches by using various key word descriptors and extensive cross-referencing. A priori evaluation criteria were established including...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.98106s1357
更新日期:1998-02-01 00:00:00
abstract::In 1998, the Helicobacter pylori [(13)C]urea breath test was offered to all school beginners (birth cohort 1991/1992) in the city of Leipzig and in Leipzig County, Germany, to determine the colonization prevalence and potential transmission pathways of the bacterium. A total of 3,347 school beginners participated in t...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109573
更新日期:2001-06-01 00:00:00
abstract:BACKGROUND:Although public concern has focused on the environmental impact of the Deepwater Horizon oil spill, the public health impact on a broad range of coastal communities is minimally known. OBJECTIVE:We sought to determine the acute level of distress (depression, anxiety), mechanisms of adjustment (coping, resil...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1002915
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:Tungsten carbide nanoparticles are being explored for their use in the manufacture of hard metals. To develop nanoparticles for broad applications, potential risks to human health and the environment should be evaluated and taken into consideration. OBJECTIVE:We aimed to assess the toxicity of well-characte...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.0800121
更新日期:2009-04-01 00:00:00
abstract::During a 2-year chronic inhalation study on methylene chloride (2000 or 0 ppm; 6 hr/day, 5 days/week), gas-uptake pharmacokinetic studies and tissue partition coefficient determinations were conducted on female B6C3F1, mice after 1 day, 1 month, 1 year, and 2 years of exposure. Using physiologically based pharmacokine...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.96104858
更新日期:1996-08-01 00:00:00
abstract::We investigated the metabolic fate of a low dose (25 micro g/kg) of bisphenol A [2,2-bis(4-hydroxy-phenyl)propane] (BPA) injected subcutaneously in CD1 pregnant mice using a tritium-labeled molecule. Analytic methods were developed to allow a radio-chromatographic profiling of BPA residues in excreta and tissues, as w...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.5603
更新日期:2003-03-01 00:00:00
abstract::This paper describes quantitation of human hemoglobin and DNA adducts of the carcinogenic tobacco-specific nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N'-nitrosonornicotine (NNN). NNK and NNN are believed to be involved in cancers of the lung, esophagus, oral cavity, and pancreas in people wh...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.939957
更新日期:1993-03-01 00:00:00
abstract:BACKGROUND:Biomass smoke is an important source of particulate matter (PM), and much remains to be discovered with respect to the human health effects associated with this specific PM source. Exposure to biomass smoke can occur in one of two main categories: short-term exposures consist of periodic, seasonal exposures ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.11378
更新日期:2009-01-01 00:00:00
abstract::The 11 September 2001 terrorist attack on New York City's World Trade Center (WTC) caused an unprecedented environmental emergency. The collapse of the towers sent a tremendous cloud of crushed building materials and other pollutants into the air of lower Manhattan. In response to the calamity, federal, state, and cit...
journal_title:Environmental health perspectives
pub_type: 评论,杂志文章
doi:10.1289/ehp.111-1241533
更新日期:2003-06-01 00:00:00
abstract::Isoflavonoids and related compounds such as coumestrol have classically been categorized as phytoestrogens because these environmentally derived substances bind to the estrogen receptor (ER) and increase uterine wet weight in immature rats and mice. Assessment of the binding affinities of isoflavonoids for ER and subs...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.95103574
更新日期:1995-06-01 00:00:00
abstract::Children and their parents in residences are often protected by insecticides from nuisance and disease-bearing mosquitoes. The annual worldwide consumption of the four major types of residential insecticide products--aerosols, mosquito coils, liquid vaporizers, and vaporizing mats--is in the billions of units. Mosquit...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.6177
更新日期:2003-09-01 00:00:00
abstract::The lysosomes of several varieties of cells such as the tubular proximal cell of the kidney and the alveolar macrophage have the ability to concentrate and precipitate several elements inhaled in water-soluble form, usually as phosphate. The mechanism involved is attributed to the high acid phosphatase activity of lys...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9297145
更新日期:1992-07-01 00:00:00
abstract:BACKGROUND:Animal and epidemiologic studies suggest that exposure to light at night (LAN) may disrupt circadian patterns and decrease nocturnal secretion of melatonin, which may disturb estrogen regulation, leading to increased breast cancer risk. OBJECTIVES:We examined the association between residential outdoor LAN ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP935
更新日期:2017-08-17 00:00:00
abstract:BACKGROUND:Psychological sequelae are among the most pronounced effects in populations following exposure to oil spills. Women in particular represent a vulnerable yet influential population but have remained relatively understudied with respect to the Deepwater Horizon oil spill (DHOS). OBJECTIVE:To describe the rela...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP167
更新日期:2016-09-01 00:00:00
abstract::We studied peripheral lymphocyte HPRT variant frequency and endogenous nitrosation in human populations exposed to various nitrate levels in their drinking water. Four test populations of women volunteers were compared. Low and medium tap water nitrate exposure groups (14 and 21 subjects) were using public water suppl...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.96104522
更新日期:1996-05-01 00:00:00
abstract::A potential connection exists between exposure to organochlorine chemicals and the increasing prevalence of endometriosis. Evidence shows that dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin) can increase the incidence and severity of the disease in monkeys and can promote the growth or survival of endometrial tissue impl...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.0211015
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Controversy remains regarding the relationship between ambient ozone and mortality worldwide. In mainland China, the largest developing country, there has been no prior study investigating the acute effect of O3 on death risk. Given the changes in types of air pollution from conventional coal combustion to t...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9014
更新日期:2006-08-01 00:00:00
abstract::In different weather conditions, constituents and concentrations of pollutants, personal exposure, and biologic responses to air pollution may vary. In this study we assessed the effects of four air pollutants on mortality in both cool and warm seasons in Hong Kong, a subtropical city. Daily counts of mortality, due t...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.01109335
更新日期:2001-04-01 00:00:00
abstract::Germ-line mutations of the mouse have for years comprised one class of biological markers for mammalian reproductive and developmental toxicology. Understanding the molecular nature of mutations and the mechanisms by which mutations are translated into specific (and often complex) phenotypes, however, still looms as a...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.877441
更新日期:1987-10-01 00:00:00
abstract:BACKGROUND:Millions of individuals worldwide, particularly those living in rural and developing areas, are exposed to harmful levels of inorganic arsenic (iAs) in their drinking water. Inorganic As exposure during key developmental periods is associated with a variety of adverse health effects, including those that are...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1409360
更新日期:2016-02-01 00:00:00
abstract::Aluminum lactate [Al(lact)3] (hydrophilic, hydrolytically unstable) and aluminum acetylacetonate [Al(acae)3] (lipophilic, hydrolytically stable) were tested as potential toxicants to rabbits upon IV administration both as aqueous solutions and as liposome suspensions. Both chemicals behaved as cardiotoxic agents when ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9089217
更新日期:1990-11-01 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::For workers in the nuclear industry, the primary route for the entry of radioactive materials into the body is by inhalation, and the rate of clearance of particles from the pulmonary region of the lung is an important factor in determining radiation dose. It is the function of alveolar macrophages (AM) to maintain th...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.929769
更新日期:1992-07-01 00:00:00
abstract::Locating geographic hot spots of cancer may lead to new causal hypotheses and ultimately to new knowledge of cancer-causing factors. The Cape Cod region of Massachusetts has experienced elevated incidence of breast cancer compared with statewide averages. The origins of the excess remain largely unexplained, even afte...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.02110471
更新日期:2002-05-01 00:00:00
abstract:BACKGROUND:Numerous man-made pollutants activate the aryl hydrocarbon receptor (AhR) and are risk factors for type 2 diabetes. AhR signaling also affects molecular clock genes to influence glucose metabolism. OBJECTIVE:We investigated mechanisms by which AhR activation affects glucose metabolism. METHODS:Glucose tole...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1103593
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:The mortality impacts of hot and cold temperatures have been thoroughly documented, with most locations reporting a U-shaped relationship with a minimum mortality temperature (MMT) at which mortality is lowest. How MMT may have evolved over previous decades as the global mean surface temperature has increase...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1509692
更新日期:2016-06-01 00:00:00
abstract::The epidemiological data linking air pollution and lung cancer are derived from statistical associations concerning rates of cancer among urban and rural residents, migrant studies and studies of occupational groups exposed to effluents from fossil fuel combinations. Few, if any of these studies, are adequately adjust...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.834733
更新日期:1983-01-01 00:00:00
abstract::To examine the effects of dibutyl phthalate (DBP) on gonadal sex differentiation, genetically male tadpoles of Rana rugosa were exposed to dilute solutions of DBP at concentrations of 0.1, 1, or 10 microM during days 19-23 after fertilization, which is the critical period of gonadal sex differentiation in R. rugosa. T...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.001081189
更新日期:2000-12-01 00:00:00