Abstract:
:With regard to genotoxicity testing and cancer risk assessment, particles and fibers form a rather specific group among all toxicants. First, the physicochemical behavior of fibrous and nonfibrous particles is usually very different from that of nonparticulate, chemical carcinogens. Reactive oxygen species (ROS) are believed to play a major role in primary genotoxicity of particles, which may derive from their surface properties, the presence of transition metals, intracellular iron mobilization, and lipid peroxidation. Other aspects relevant to primary genotoxicity are particle size, shape, crystallinity (e.g., silica), and solubility, and may also include particle uptake, interaction with cell division machinery (e.g., asbestos), and the presence of mutagens carried with the particle (e.g., diesel exhaust particles, DEP). Excessive and persistent formation of ROS from inflammatory cells is considered as the hallmark of the secondary genotoxicity of nonfibrous and fibrous particles. Since lung inflammation is known to occur and persist only at sufficient particle dose, this secondary pathway is considered to contain a threshold (Greim et al., 2001). Identification of (mechanisms of) particle genotoxicity has been/can be achieved via (1) acellular assays, (2) in vitro tests, (3) in vivo studies, usually in mice or rats, and finally (4) biomarker studies in humans with (occupational) exposure. The significance of acellular assays and biomarker studies for risk assessment is limited, but has provided some mechanistic insights (e.g., in oxidant generating properties of quartz and asbestos) and may also contribute to hazard identification. In vitro studies have lead to identification of primary genotoxic properties of particles, whereas recent in vivo studies provide further support for the correlation between particle-induced lung inflammation and secondary genotoxicity. Proper risk assessment of particles necessitates identification of the relative impact of primary versus secondary genotoxicity in realistic exposure conditions. However, since it is impossible to discern between primary and secondary genotoxicity with current in vivo tests, concomitant in vitro assays are required to determine primary genotoxicity. In vivo tests should ideally be designed using different doses to allow dose-effect analysis for both inflammation and genotoxicity.
journal_name
Inhal Toxicoljournal_title
Inhalation toxicologyauthors
Schins RPdoi
10.1080/089583701753338631subject
Has Abstractpub_date
2002-01-01 00:00:00pages
57-78issue
1eissn
0895-8378issn
1091-7691journal_volume
14pub_type
杂志文章,评审abstract::Because of the interest attendant to establishing an 8-h ozone (O(3)) federal air quality standard, acute pulmonary function responses to prolonged (6.6 to 8 h) O(3) exposure between 0.08 and 0. 24 ppm have been examined in chamber studies. Given time constraints for O(3) concentration changes in room-sized chambers a...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/089583700196167
更新日期:2000-04-01 00:00:00
abstract::This article addresses the importance of blood pressure as a covariate in studies of long-term associations between air quality and mortality. We focus on a cohort of about 50,000 U.S. veterans who had been diagnosed as hypertensive at some time and whose survival rates were predicted by blood pressure (BP) and ambien...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370304463
更新日期:2003-04-25 00:00:00
abstract::The Toxicological Evaluation of Realistic Emissions Source Aerosols (TERESA) study was carried out at three US coal-fired power plants to investigate the potential toxicological effects of primary and photochemically aged (secondary) particles using in situ stack emissions. The exposure system designed successfully si...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958371003728040
更新日期:2011-08-01 00:00:00
abstract::Objective: Ethanol is used as a solvent for flavoring chemicals in some electronic cigarette (e-cigarette) liquids (e-liquids). However, there are limited data available regarding the effects of inhalation of ethanol on blood alcohol concentration (BAC) during e-cigarette use. In this study, a modified physiologically...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958378.2020.1720867
更新日期:2020-01-01 00:00:00
abstract::A cross-sectional study on suberosis was conducted in the Champagne-Ardenne County, France, to determine the prevalence of respiratory symptoms, the level of pulmonary function, and the presence of precipitins against Penicillium frequentans. Thirteen of the 33 workers exposed to cork dust had respiratory symptoms exc...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370390249120
更新日期:2003-12-01 00:00:00
abstract::An approach to identify causal components of complex air pollution mixtures was explored. Rats and mice were exposed by inhalation 6 h daily for 1 week or 6 months to dilutions of simulated downwind coal emissions, diesel and gasoline exhausts and wood smoke. Organ weights, hematology, serum chemistry, bronchoalveolar...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2014.920440
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:Due to some historical (and inaccurate) reports that asbestos might be present in some cosmetic talc products, questions are occasionally raised regarding the potential pleural mesothelioma risks associated with cosmetic talc products. Our objective was to determine the incidence of pleural mesothelioma of in...
journal_title:Inhalation toxicology
pub_type: 杂志文章,评审
doi:10.1080/08958378.2017.1336187
更新日期:2017-03-01 00:00:00
abstract::Nasal efficiency for removing fine particles from inhaled air may be affected by variations in nasal structure associated with race. In 11 African American and 11 Caucasian adults (age 18-31 yr) we measured the fractional deposition (DF) of fine particles (1 and 2 mum mass median aerodynamic diameter) (MMAD) for oral ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370500188984
更新日期:2005-11-01 00:00:00
abstract::In 1997 The International Agency for Research on Cancer classified some exposures to crystalline silica as carcinogenic to humans. Such exposures were acknowledged to be very variable, and even in the same monograph it was admitted that coal dust, containing as much as 20% quartz, could not be classified. Clearly ther...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370802136731
更新日期:2008-09-01 00:00:00
abstract::Oxygen radical generation due to surface radicals, inflammation, and iron release has been suggested as the mechanism of adverse effects of quartz, such as emphysema, fibrosis, and carcinogenic effects. Therefore, we measured iron release, acellular generation of hydroxyl radicals, and oxidative DNA damage and cytotox...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/089583799196628
更新日期:1999-12-01 00:00:00
abstract::Acute lung injury (ALI) induced by phosgene increases risk of serious edema and mortality. Increased permeability of the microvascular endothelium is implicated in the progression of ALI, but the processing interaction and time course activity of the vascular regulators in exudation are still not understood. The main ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370802015091
更新日期:2008-07-01 00:00:00
abstract::Increasing evidence suggests a role for a systemic pro-coagulant state in the pathogenesis of cardiac dysfunction subsequent to inhalation of airborne particulate matter (PM). We evaluated platelet activation, systemic cytokines and pulmonary gene expression in mice exposed to concentrated ambient particulate matter (...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2012.695815
更新日期:2012-07-01 00:00:00
abstract:CONTEXT:Eleven carbohydrates and natural product ingredients were added individually to experimental cigarettes. OBJECTIVE:A battery of tests was used to compare toxicity of mainstream smoke from these experimental cigarettes to matched control cigarettes without test ingredients. MATERIALS AND METHODS:Smoke fraction...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2011.545085
更新日期:2011-06-01 00:00:00
abstract::In 1999 Berry published a model for mesothelioma incidence following fiber exposure. He concluded, that the influence of the solubility of fibers on the mesothelioma rate is 17 times higher in humans than in rats. This conclusion may be helpful for evaluating the carcinogenic risk from man-made vitreous fibers, but it...
journal_title:Inhalation toxicology
pub_type: 杂志文章,评审
doi:10.1080/08958370490505016
更新日期:2004-10-01 00:00:00
abstract::This study was undertaken to determine whether there was an association between fine particles (PM₂.₅) levels and hospital admissions for congestive heart failure (CHF) in Taipei, Taiwan. Hospital admissions for CHF and ambient air pollution data for Taipei were obtained for the period 2006-2010. The relative risk of ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2013.804609
更新日期:2013-07-01 00:00:00
abstract::The purpose of this work is to define a sample preparation protocol that allows inorganic fibers and particulate matter extracted from different biological samples to be characterized morphologically, crystallographically and chemically by transmission electron microscopy-energy dispersive spectroscopy (TEM-EDS). The ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958378.2016.1175527
更新日期:2016-07-01 00:00:00
abstract::To elucidate dose-response and other effects of diesel particles in guinea pigs chronically exposed to diesel exhaust, various biomarkers for chronic obstructive lung diseases were studied using bronchoalveolar lavage (BAL) fluid and blood specimens. Guinea pigs were exposed 16 h/day, 6 days/wk, for 6, 12, 18, or 24 m...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370290084773
更新日期:2002-10-01 00:00:00
abstract::Although the association between exposure to asbestos fibers and the development of lung cancer and mesothelioma has been well established in humans, the carcinogenic potential of other natural and man-made fibers/particles is not clear. Various in vitro genotoxicity studies have been employed to assess their in vivo ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958378.2000.11463207
更新日期:2000-01-01 00:00:00
abstract::The Toxicological Evaluation of Realistic Emissions of Source Aerosols (TERESA) study involved withdrawal, aging, and atmospheric transformation of emissions of three coal-fired power plants. Toxicological evaluations were carried out in rats exposed to different emission scenarios with extensive exposure characteriza...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2010.566291
更新日期:2011-08-01 00:00:00
abstract::Laboratory animals exposed to methyl iodide (MeI) have previously demonstrated lesions of the olfactory epithelium that were associated with local metabolism in the nasal tissues. Interactions of MeI in the nasal passage may, therefore, alter systemic toxicokinetics. The current study used unrestrained plethysmographs...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370802596926
更新日期:2009-05-01 00:00:00
abstract::Acute carbon monoxide (CO) poisoning may cause cardiotoxicity. The natriuretic peptides, including atrial natriuretic peptide, brain natriuretic peptide (BNP), N-BNP, and NT-proBNP (N-terminal pro brain natriuretic peptide), are endogenous cardiac hormones that may be secreted upon myocardial stress. The aim of this s...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370500305885
更新日期:2006-02-01 00:00:00
abstract::Chronic bronchitis is a significant cause of morbidity and mortality. Chronic irritation of the conducting airways by inhaled substances, most importantly cigarette smoke, air pollution, and occupational exposures, is thought to be a key factor in the pathogenesis of chronic bronchitis. Microbial infections have been ...
journal_title:Inhalation toxicology
pub_type: 杂志文章,评审
doi:10.1080/089583700750019549
更新日期:2000-01-01 00:00:00
abstract::Background: High-mobility group box 1 (HMGB1) protein plays an important pathogenic role in various diseases such as pulmonary fibrosis. However, the relationship between variation of HMGB1 gene and susceptibility to coal worker's pneumoconiosis (CWP) remains unclear. The objective of the study was to determine the as...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958378.2020.1764153
更新日期:2020-03-01 00:00:00
abstract::This study investigated the surface chemistry of urban fine particles (PM(2.5)), and quantified the adsorbed and desorbed species after exposure to bronchoalveolar lavage fluid (BALF). Urban background and roadside PM(2.5) samples of different mass concentration and total weight were collected in triplicate in the Sou...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370490443204
更新日期:2004-01-01 00:00:00
abstract::Objective: To develop a physiologically based pharmacokinetic (PBPK) model for chloroprene in the mouse, rat and human, relying only on in vitro data to estimate tissue metabolism rates and partitioning, and to apply the model to calculate an inhalation unit risk (IUR) for chloroprene.Materials and methods: Female B6C...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958378.2020.1715513
更新日期:2019-01-01 00:00:00
abstract::Asthma rates have been increasing worldwide, and exposure to diesel exhaust particles (DEP) may be implicated in this increase. DEP may also play a role in the increased morbidity and mortality associated with ambient airborne particulate matter (PM) exposure. Two types of nasal responses have been reported for human ...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370600743027
更新日期:2006-08-01 00:00:00
abstract::During the "Commonwealth Games" 2010 (CWG-2010) in Delhi, the Indian government has implemented an ambitious project "System of Air quality Forecasting And Research (SAFAR)" for monitoring and forecasting air-quality scenario. Using high-precision spatio-temporal measurements of criteria pollutants from the SAFAR netw...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2013.788103
更新日期:2013-05-01 00:00:00
abstract::Epidemiologic studies have provided strong evidence that episodic exposure to ambient particulate matter is associated with increases in morbidity and mortality. These adverse effects have been demonstrated at concentrations far below the National Ambient Air Quality Standard (NAAQS), and thus, the biological plausibi...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/089583799197276
更新日期:1999-01-01 00:00:00
abstract::Multi-walled carbon nanotubes (MWCNT) have been reported to cause lung pathologies in multiple studies. However, the mechanism responsible for the bioactivity has not been determined. This study used nine different well-characterized MWCNT and examined the outcomes in vitro and in vivo. MWCNT, from a variety of source...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.3109/08958378.2012.745633
更新日期:2012-12-01 00:00:00
abstract::This 3-mo inhalation study investigated the biological effects of a special-purpose glass microfiber (E-glass microfiber), the stone wool fiber MMVF21, and a new high-temperature application fiber (calcium-magnesium-silicate fiber, CMS) in Wistar rats. Rats were exposed 6 h/day, 5 days/wk for 3 mo to fiber aerosol con...
journal_title:Inhalation toxicology
pub_type: 杂志文章
doi:10.1080/08958370390229843
更新日期:2003-10-01 00:00:00