Abstract:
:A wide range of fiber types was tested in two in vitro assays: toxicity to A549 epithelial cells, as detachment from substrate, and the production of the proinflammatory cytokine tumor necrosis factor (TNF) by rat alveolar macrophages. Three of the fibers were also studied in vivo, using short-term inhalation followed by a) bronchoalveolar lavage to assess the inflammatory response and b) measurement of cell proliferation in terminal bronchioles and alveolar ducts, using incorporation of bromodeoxyuridine (BrdU). The amount of TNF produced by macrophages in vitro depended on the fiber type, with the man-made vitreous fibers, and refractory ceramic fibers being least stimulatory and silicon carbide (SiC) whiskers providing the greatest stimulation. In the epithelial detachment assay there were dose-dependent differences in the toxicity of the various fibers, with long amosite being the most toxic. However, there was no clear relationship to known chronic pathogenicity. Fibers studied by short-term inhalation produced some inflammation, but there was no clear discrimination between the responses to code 100/475 glass fibers and the more pathogenic amosite and SiC. However, measurements of BrdU uptake into lung cells showed that amosite and SiC produced a greater reaction than code 100/475, which itself caused no more proliferation than that seen in untreated lungs. These results mirror the pathogenicity ranking of the fibers in long-term experiments. In conclusion, the only test to show potential as a predictive measure of pathogenicity was that of cell proliferation in lungs after brief inhalation exposure (BrdU assay). We believe that this assay should be validated with a wider range of fibers, doses, and time points.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Cullen RT,Miller BG,Davis JM,Brown DM,Donaldson Kdoi
10.1289/ehp.97105s51235subject
Has Abstractpub_date
1997-09-01 00:00:00pages
1235-40eissn
0091-6765issn
1552-9924journal_volume
105 Suppl 5pub_type
杂志文章abstract::Airway mucus is a complex airway secretion whose primary function as part of the mucociliary transport mechanism is to to serve as renewable and transportable barrier against inhaled particulates and toxic agents. The rheologic properties necessary for this function are imparted by glycoproteins, or mucins. Some respi...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.9410289
更新日期:1994-06-01 00:00:00
abstract::Inoculation of tumorigenic prostatic stroma and nontumorigenic prostatic epithelia into the subcutaneous space of syngeneic rats induced the development of carcinosarcoma. The induced tumors, which were composed of a mixture of adenocarcinoma and fibrosarcoma, were androgen responsive. This model offers a novel mechan...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.887723
更新日期:1988-04-01 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:BACKGROUND:Early-life exposure to lead is associated with deficits in neurodevelopment and with hematopoietic system toxicity. DNA methylation may be one of the underlying mechanisms for the adverse effects of prenatal lead on the offspring, but epigenome-wide methylation data for low levels of prenatal lead exposure a...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP1246
更新日期:2017-08-25 00:00:00
abstract::A literature review of experimental and human exposure studies of skin permeation and cutaneous hypersensitivity reactions evoked by chromium was carried out to provide a basis for making a risk assessment of chromium as a soil contaminant. In vitro and in vivo studies demonstrated that 1 to 4% of the applied dose of ...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.92-1519389
更新日期:1991-05-01 00:00:00
abstract::Exposure to environmental pollutants may contribute to the development of coronary heart disease (CHD). We determined the ZIP codes containing or abutting each of the approximately 900 hazardous waste sites in New York and identified the major contaminants in each. Three categories of ZIP codes were then distinguished...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.7595
更新日期:2005-06-01 00:00:00
abstract::Hemoglobin adducts of the common metabolite of the tobacco-specific nitrosamine (TSNA) 4-hydroxy-1-(3-pyridyl)-1-butanone (HPB) and of 4-aminobiphenyl (4-ABP) were quantified in blood samples from smokers and nonsmokers to test their suitability for biomonitoring tobacco smoke exposure. Additionally, TSNA adducts were...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.99-1567014
更新日期:1993-03-01 00:00:00
abstract::The problem of byssinosis has plagued cotton textile mills for hundreds of years, and it is still a problem today. With the regulations on airborne raw cotton dust set by OSHA and the ACGIH, research regarding the measurement of cotton dust in lint fiber is a necessity. A procedure known as the mass concentration part...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8666167
更新日期:1986-04-01 00:00:00
abstract::This paper concerns the testing for Hardy-Weinberg equilibrium and the estimation of gene frequency in the human leukocyte antigens (HLA) system. An extensive simulation study for both testing and estimation is given for investigating the performance of the projection method by Eguchi and Matsuura, which has a closed ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9087149
更新日期:1990-07-01 00:00:00
abstract::This study investigated the association between biomarkers of fetal exposure to cigarette smoke at the end of pregnancy, cotinine in cord serum and in maternal and newborn urine samples, and quantitative measurement of smoking intake and exposure evaluated by maternal self-reported questionnaire. Study subjects were 4...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.001081079
更新日期:2000-11-01 00:00:00
abstract::Embryonal carcinoma (EC) cells offer an interesting model system for evaluating differentiation because the cells are pluripotent, thus resembling germ cells and embryonic stem cells, and because a number of agents have been defined that are capable of promoting the differentiation of these cells. This chapter examine...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.898025
更新日期:1989-03-01 00:00:00
abstract::In recent years, it has become apparent that minerals can trigger alterations in gene expression by initiating signaling events upstream of gene transactivation. These cascades may be initiated at the cell surface after interaction of minerals with the plasma membrane either through receptorlike mechanisms or integrin...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.97105s51121
更新日期:1997-09-01 00:00:00
abstract::The fundamental problems in population monitoring for genetic effects are twofold: the binomialized nature of the data and the lower power due to small risk of finding positive results. The binomial character is artificial, even forced, and can with advantage be replaced by more refined analysis, and by a focus on all...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.8142127
更新日期:1981-12-01 00:00:00
abstract::Systemic lupus erythematosus and systemic scleroderma are autoimmune diseases thought to have an exogenous trigger. This review summarizes relevant case-control and cohort studies that investigated exogenous sex hormones, silica, silicone, solvents, pesticides, mercuric chloride, and hair dyes as putative risk factors...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.99107s5743
更新日期:1999-10-01 00:00:00
abstract::Research conducted in recent years has increased public health concern about the toxicity of lead at low dose and has supported a reappraisal of the levels of lead exposure that may be safely tolerated in the workplace. In this article, which appears as part of a mini-monograph on adult lead exposure, we summarize a b...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.9784
更新日期:2007-03-01 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::In previous attempts to model disposition of 1,3-butadiene in mice and rats, parameter values for 1,2-epoxybut-3-ene metabolism were optimized to reproduce elimination of this gas from closed chambers. However, each of these models predicted much higher concentrations of circulating epoxybutene than were subsequently ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.00108s5911
更新日期:2000-10-01 00:00:00
abstract::The integrated exposure uptake biokinetic model for lead in children was developed to provide plausible blood lead distributions corresponding to particular combinations of multimedia lead exposure. The model is based on a set of equations that convert lead exposure (expressed as micrograms per day) to blood lead conc...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.98106s61513
更新日期:1998-12-01 00:00:00
abstract::Chromate is an established human carcinogen. There have been many studies of the reactivity of chromate aimed at improving understanding of chromate toxicity. In the present paper a number of conclusions of these studies are reviewed and considered in the light of new results obtained in our laboratories. A number of ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.94102s33
更新日期:1994-09-01 00:00:00
abstract::Collaborative studies were performed to develop a functional assay for fish-killing activity produced by Pfiesteria piscicida. Eight cell lines were used to screen organic fractions and residual water fraction by using a 3-[4, 5-dimethylthiazol-(2-4)]-diphenyltetrazolium bromide cytotoxicity assay. Diethyl ether and a...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.99107711
更新日期:1999-09-01 00:00:00
abstract:BACKGROUND:Epidemiologic studies of postnatal PCB exposure and behavior have not reported consistent evidence of adverse associations, possibly because of challenges in exposure estimation. We previously developed a pharmacokinetic model to improve estimation of children's PCB exposure. OBJECTIVES:We aimed to assess w...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.1408084
更新日期:2015-09-01 00:00:00
abstract::Widespread and persistent organochlorine (OC) contaminants, such as polychlorinated biphenyls (PCBs) and pesticides, are known to have broad-ranging toxicities in wildlife. In this study we investigated, for the first time, their possible health effects on loggerhead sea turtles (Caretta caretta). Nonlethal fat biopsi...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.6923
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:THE APHENA (AIR POLLUTION AND HEALTH: A Combined European and North American Approach) study is a collaborative analysis of multicity time-series data on the effect of air pollution on population health, bringing together data from the European APHEA (Air Pollution and Health: A European Approach) and U.S. N...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.11345
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND:There is ongoing discussion that inhaled nanoparticles (NPs, < 100 nm) may translocate from epithelial deposition sites of the lungs to systemic circulation. OBJECTIVES AND METHODS:We studied the disappearance of NPs from the epithelium by sequential lung retention and clearance and bronchoalveolar lavage (...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.9685
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:Assessing cumulative effects of the multiple environmental factors influencing mortality remains a challenging task. OBJECTIVES:This study aimed to examine the associations between cumulative environmental quality and all-cause and leading cause-specific (heart disease, cancer, and stroke) mortality rates. ...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/EHP119
更新日期:2017-03-01 00:00:00
abstract::The immune system comprises a highly integrated network of multiple tissues and cell types with complicated interactions and effects. It is modulated by the endocrine and nervous systems and there is growing realization of its multifunctionality. The session focusing on immunologic effects of dioxin and related compou...
journal_title:Environmental health perspectives
pub_type: 杂志文章,评审
doi:10.1289/ehp.95103s2157
更新日期:1995-03-01 00:00:00
abstract::In 1998 we published the results of a study suggesting an association between breast cancer and perchloroethylene (PCE; also called tetrachloroethylene) exposure from public drinking water. The present case-control study was undertaken to evaluate this association further. The cases were composed of female residents o...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.4980
更新日期:2003-02-01 00:00:00
abstract:BACKGROUND:Differences in the neighborhood food environment may contribute to disparities in obesity. OBJECTIVES:The purpose of this study was to examine the association of neighborhood food environments with body mass index (BMI) and obesity after control for neighborhood walkability. METHODS:This study employed a c...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.11590
更新日期:2009-03-01 00:00:00
abstract::It is necessary but not sufficient to develop laboratory animal models in sensory behavioral toxicology for screening toxic substances and for the analysis of sensory impairment at threshold levels of stimulation. It is important to develop more thorough and quantitative tests of impairment which in their greater comp...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.824477
更新日期:1982-04-01 00:00:00
abstract::Until recently, mutagenicity testing was done on preselected compounds in a manner in which the testing laboratories knew the identity of the substances under test and the "expected" results, i.e., positive for compounds selected because of their carcinogenicity and negative for food additives. There is no completed s...
journal_title:Environmental health perspectives
pub_type: 杂志文章
doi:10.1289/ehp.7720253
更新日期:1977-10-01 00:00:00