Bedding-generated particulate matter: implications for rodent studies.

Abstract:

OBJECTIVES:Rodents used in scientific research are typically housed in cages containing natural bedding materials. Despite extensive evidence of biological harm from inhaled particulate matter (PM), relatively little work has been performed to measure bedding-generated PM exposure in caged animals used in basic science research. Our objectives were to determine whether bedding-generated PM was present in significant concentrations in rodent cages and to identify the main factors affecting the accumulation and attenuation of bedding-generated PM inside cages. MATERIALS AND METHODS:We measured PM2.5 concentrations in cages containing common bedding materials (pine, aspen, paper, and corncob) with filter top isolator absent or present on the cages. PM2.5 concentrations were monitored with rats inside cages as well as during artificial manipulation of the bedding (designed to simulate rodent activity). RESULTS AND DISCUSSION:Upon rodent digging or mechanical/manual stirring, all four bedding materials produced significant increases in PM2.5 concentrations (as much as 100-200 µg/m3 PM2.5, 50- to 100-fold higher than during periods of no rodent activity), and concentrations in cages fitted with filter tops were an order of magnitude higher than in cages without filter tops. Elevated concentrations were sustained for longer durations in cages with filter tops (5-10 minutes) compared to cages with only bar lids (0-2 minutes). CONCLUSIONS:These results indicate that standard laboratory housing conditions can expose rodents to substantial levels of PM2.5. Bedding-generated PM has potential implications as an environmental agent in rodent studies.

journal_name

Inhal Toxicol

journal_title

Inhalation toxicology

authors

Hudda N,Durant JL,Nemeth A,Mann P,Petitto J,Brugge D,Nephew BC

doi

10.1080/08958378.2019.1694109

subject

Has Abstract

pub_date

2019-08-01 00:00:00

pages

368-375

issue

9-10

eissn

0895-8378

issn

1091-7691

journal_volume

31

pub_type

杂志文章
  • Air pollution and postneonatal mortality in a tropical city: Kaohsiung, Taiwan.

    abstract::With growing evidence of the association between daily mortality and air pollution in adults, it is important to investigate whether infants are also susceptible to the adverse health effects of ambient air pollutants. The purpose of this study is to examine the relationship between air pollution and postneonatal mort...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370500434214

    authors: Tsai SS,Chen CC,Hsieh HJ,Chang CC,Yang CY

    更新日期:2006-03-01 00:00:00

  • In vitro and ex vivo toxicological testing of sildenafil-loaded solid lipid nanoparticles.

    abstract::The aim of this study was to investigate the potential cytotoxicity of solid lipid nanoparticles (SLN) loaded with sildenafil. The SLNs were tested as a new drug delivery system (DDS) for the inhalable treatment of pulmonary hypertension in human lungs. Solubility of sildenafil in SLN lipid matrix (30:70 phospholipid:...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958378.2013.810315

    authors: Paranjpe M,Neuhaus V,Finke JH,Richter C,Gothsch T,Kwade A,Büttgenbach S,Braun A,Müller-Goymann CC

    更新日期:2013-08-01 00:00:00

  • Particulate Matter Physicochemistry and Toxicology: In Search of Causality-A Critical Perspective.

    abstract::Results from epidemiology studies have shown statistical associations between ambient air particulate matter (PM) concentrations and mortality/morbidity, particularly among susceptible subpopulations. Although the epidemiology of ambient air PM is compelling, there remains considerable uncertainty in PM risk assessmen...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958378.2000.11463230

    authors: Dreher KL

    更新日期:2000-01-01 00:00:00

  • Effect of rapid shallow breathing on the distribution of 18O-labeled ozone reaction product in the respiratory tract of the rat.

    abstract::We examined the effect of breathing pattern on ozone reaction product content within the respiratory tract. Thirty-four anesthetized, male Wistar rats were exposed to oxygen-18 ((18)O)-labeled ozone at 1.0 ppm for 2 h using a dual-chamber, negative-pressure ventilation system. Frequency was set at 80 (n = 9), 120 (n =...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370490264852

    authors: Alfaro MF,Putney L,Tarkington BK,Hatch GE,Hyde DM,Schelegle ES

    更新日期:2004-02-01 00:00:00

  • PBPK modeling characterization of potential acute impairment effects from inhalation of ethanol during e-cigarette use.

    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

    authors: More SL,Thornton SA,Maskrey JR,Sharma A,de Gandiaga E,Cheng TJ,Fung ES,Bernal AJ,Madl AK

    更新日期:2020-01-01 00:00:00

  • Acrolein inhalation alters arterial blood gases and triggers carotid body-mediated cardiovascular responses in hypertensive rats.

    abstract:CONTEXT:Air pollution exposure affects autonomic function, heart rate, blood pressure and left ventricular function. While the mechanism for these effects is uncertain, several studies have reported that air pollution exposure modifies activity of the carotid body, the major organ that senses changes in arterial oxygen...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958378.2014.984881

    authors: Perez CM,Hazari MS,Ledbetter AD,Haykal-Coates N,Carll AP,Cascio WE,Winsett DW,Costa DL,Farraj AK

    更新日期:2015-01-01 00:00:00

  • Extrapolation of the carcinogenic potency of fibers from rats to humans.

    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

    authors: Rödelsperger K

    更新日期:2004-10-01 00:00:00

  • 3-week inhalation exposure to cigarette smoke and/or lipopolysaccharide in AKR/J mice.

    abstract::AKR/J mice were exposed to cigarette smoke (CS) and/or lipopolysaccharide (LPS) via inhalation for 3 wk and pulmonary responses were evaluated. The objective was to explore the feasibility of coexposing LPS with cigarette smoke under a subacute exposure, as a surrogate for viral or bacterial insults, that would mimic ...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370600985784

    authors: Lee KM,Renne RA,Harbo SJ,Clark ML,Johnson RE,Gideon KM

    更新日期:2007-01-01 00:00:00

  • Ambient PM(10) extracts inhibit phagocytosis of defined inert model particles by alveolar macrophages.

    abstract::We used inert melamin particles that are very well defined in size (diameters: 0.5, 1.9, 6.8 microm) to study the effects of ambient particles of <10 microm (PM(10)) on phagocytosis. Dose-response functions were found between the amount of added melamin particle mass and the toxicity. Fine particles (0.5 microm) were ...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370252871005

    authors: Monn C,Fendt R,Koller T

    更新日期:2002-04-01 00:00:00

  • Biopersistence, fiber length, and cancer risk assessment for inhaled fibers.

    abstract::We briefly review the evidence that the carcinogenic risk posed by inhaled fibers depends principally on the lung burden of long fibers. We use a deposition clearance model to generate time-dependent lung burdens in rats of a dozen long fibers for various exposure concentrations. Together with a previously estimated p...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/089583701316941294

    authors: Moolgavkar SH,Brown RC,Turim J

    更新日期:2001-09-01 00:00:00

  • Tumorigenicity of cellulose fibers injected into the rat peritoneal cavity.

    abstract::Cellulose fibers, along with many other organic fibers, are durable. Therefore, if inhaled, they have the potential to persist within the lung, and may then cause disease. Here we report the effects of injecting high-purity cellulose fibers into the abdominal cavity of rats. A respirable fraction of cellulose fiber wa...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370290084584

    authors: Cullen RT,Miller BG,Clark S,Davis JM

    更新日期:2002-07-01 00:00:00

  • Calculated deposition in growing tracheobronchial airways: effect of growth-rate assumptions.

    abstract::Most current deterministic computer dosimetry models use idealized dichotomous symmetrical infant, child, and adolescent tracheobronchial geometries for dosimetry predictions. These tracheobronchial geometries were derived from either the morphometric measurements of J. D. Mortensen and colleagues or those of R. F. Ph...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370600748349

    authors: Oldham MJ,Robinson RJ

    更新日期:2006-09-01 00:00:00

  • Role of Mitogen-Activated Protein Kinases, Early Response Protooncogenes, and Activator Protein-1 in Cell Signaling by Asbestos.

    abstract::Cell signaling by pathogenic minerals may initiate the transactivation of genes that are critical to carcinogenesis and fibroproliferative diseases of the lung and pleura. We have shown previously that stimulation of the mitogen-activated protein kinase (MAPK) cascade by asbestos fibers leads to phosphorylation events...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958378.2000.11463240

    authors: Mossman B,Hubbard A,Shukla A,Timblin CR

    更新日期:2000-01-01 00:00:00

  • Nasal responses in asthmatic and nonasthmatic subjects following exposure to diesel exhaust particles.

    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

    authors: Kongerud J,Madden MC,Hazucha M,Peden D

    更新日期:2006-08-01 00:00:00

  • Lung antioxidant and cytokine responses to coarse and fine particulate matter from the great California wildfires of 2008.

    abstract::The authors have previously demonstrated that wildfire-derived coarse or fine particulate matter (PM) intratracheally instilled into lungs of mice induce a strong inflammatory response. In the current study, the authors demonstrate that wildfire PM simultaneously cause major increases in oxidative stress in the mouse ...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958370903571849

    authors: Wegesser TC,Franzi LM,Mitloehner FM,Eiguren-Fernandez A,Last JA

    更新日期:2010-06-01 00:00:00

  • Seasonal influences on CAPs exposures: differential responses in platelet activation, serum cytokines and xenobiotic gene expression.

    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

    authors: Tablin F,den Hartigh LJ,Aung HH,Lame MW,Kleeman MJ,Ham W,Norris JW,Pombo M,Wilson DW

    更新日期:2012-07-01 00:00:00

  • Morphological changes in rat lung after long-term exposure to diesel emissions.

    abstract::Wistar rats were exposed for 24 mo to diesel emissions containing a low (0.2 ppm, 0.21 mg/m(3)), medium (1.04 ppm, 1.18 mg/m(3)), or high (2.96 ppm, 3.05 mg/m(3)) concentration of NO(2) and particles, or diesel emissions containing a medium (1.12 ppm, 0.01 mg/m(3)) concentration of NO(2) without particles. At 6-mo int...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/089583700402879

    authors: Kato A,Nagai A,Kagawa J

    更新日期:2000-06-01 00:00:00

  • Comparison of high MRI T1 signals with manganese concentration in brains of cynomolgus monkeys after 8 months of stainless steel welding-fume exposure.

    abstract::Several pharmacokinetic studies on inhalation exposure to manganese (Mn) have already demonstrated that Mn readily accumulates in the olfactory and brain regions. However, a shortening of the magnetic resonance imaging (MRI) T1 relaxation time or high T1 signal intensity in specific sites of the brain, including the g...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370701516108

    authors: Park JD,Chung YH,Kim CY,Ha CS,Yang SO,Khang HS,Yu IK,Cheong HK,Lee JS,Song CW,Kwon IH,Han JH,Sung JH,Heo JD,Choi BS,Im R,Jeong J,Yu IJ

    更新日期:2007-09-01 00:00:00

  • Halomethane-induced cytotoxicity and cell proliferation in human lung MRC-5 fibroblasts and NL20-TA epithelial cells.

    abstract::Halomethanes (HMs) can be formed during the chlorination process to obtain drinking water. In liver cells, HMs had been shown to be mutagenic and carcinogenic; however, their bioactivation by CYP 2E1 and GSTT1 is required. Although inhalation is the most common pathway of exposure, reports on the toxic effects induced...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958378.2012.716871

    authors: Nájera-Martínez M,García-Latorre EA,Reyes-Maldonado E,Domínguez-López ML,Vega-López A

    更新日期:2012-09-01 00:00:00

  • Inhalation studies with the Göttingen minipig.

    abstract::A method for inhalative exposure of minipigs to aerosols and gases has been developed. Minipigs are exposed via mask inhalation to the test substance using a computer-controlled exposure system that permits simultaneous exposure of groups of four animals in parallel to different controlled dose levels. We studied inha...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370150502476

    authors: Koch W,Windt H,Walles M,Borlak J,Clausing P

    更新日期:2001-03-01 00:00:00

  • Genotoxic potential of respirable bentonite particles with different quartz contents and chemical modifications in human lung fibroblasts.

    abstract::Crystalline silica has been classified as a human carcinogen, but there is still considerable controversy regarding its fibrogenic and carcinogenic potential. In the present study, we investigated the genotoxic potential of bentonite particles (diameter < 10 microm) with an a-quartz content of up to 6% and different c...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370600563524

    authors: Geh S,Shi T,Shokouhi B,Schins RP,Armbruster L,Rettenmeier AW,Dopp E

    更新日期:2006-05-01 00:00:00

  • The toxicological evaluation of realistic emissions of source aerosols study: statistical methods.

    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

    authors: Coull BA,Wellenius GA,Gonzalez-Flecha B,Diaz E,Koutrakis P,Godleski JJ

    更新日期:2011-08-01 00:00:00

  • Sulfur mustard vapor effects on differentiated human lung cells.

    abstract:CONTEXT:Sulfur mustard (SM) causes skin blistering and long-term pulmonary dysfunction. Its adverse effects have been studied in battlefield-exposed humans, but lack of knowledge regarding confounding factors makes interpretation challenging. Animal studies are critical to understanding mechanisms, but differences betw...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958378.2010.493901

    authors: Seagrave J,Weber WM,Grotendorst GR

    更新日期:2010-09-01 00:00:00

  • Methylhexahydrophthalic anhydride adducted albumin tryptic peptides in nasal lavage fluid.

    abstract::Methylhexahydrophthalic anhydride (MHHPA) is a reactive, low molecular weight chemical used in products such as plastics, paints, and electronic components. Exposure to MHHPA may lead to work-related airway diseases such as rhinitis, conjunctivitis, and asthma. Twelve subjects employed at a plant manufacturing electri...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370802715997

    authors: Jeppsson MC,Lindh CH,Kristiansson MH,Nielsen J,Jönsson BA

    更新日期:2009-10-01 00:00:00

  • Effects of subchronic exposures to concentrated ambient particles (CAPs) in mice. VI. Gene expression in heart and lung tissue.

    abstract::The purpose of this exploratory study within the integrated subchronic inhalation exposure study (Lippmann et al., 2005) was to identify genes in heart and lung tissue that changed in expression level as a result of subchronic exposure to concentrated ambient particles (CAPs). Identification of CAPs exposure-related c...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370590912851

    authors: Gunnison A,Chen LC

    更新日期:2005-04-01 00:00:00

  • Protective effects of seabuckthorn seed oil on mouse injury induced by sulfur dioxide inhalation.

    abstract::Sulfur dioxide (SO2) is a common but important air pollutant. Micronuclei (MN) in the polychromatic erythrocytes (PCE) of mouse bone marrow and the ratio between organ and body weight of treatment mouse were determined and analyzed in vivo in order to study injury of sulfur dioxide inhalation on organs and germ plasm ...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370390226558

    authors: Ruan A,Min H,Meng Z,Lü Z

    更新日期:2003-09-01 00:00:00

  • Toxicological investigations on the respirable fraction of silicon carbide grain products by the in vitro vector model.

    abstract::Increased lung cancer incidence with workers at the production site of crude silicon carbide (SiC) using the Acheson process has been reported. Several agents derived from the process were discussed as causative factors. Recently concern had been expressed about the presence of cleavage fragments (CFs) in commercial p...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.3109/08958378.2014.885099

    authors: Bruch J,Rehn B,Duval-Arnould G,Efskind J,Röderer G,Sébastian P

    更新日期:2014-04-01 00:00:00

  • Influence of exhaled air on inhalation exposure delivered through a directed-flow nose-only exposure system.

    abstract::In order to conserve material that is available in limited quantities, "directed-flow" nose-only exposure systems have at times been run at flow rates close to the minute ventilation of the animal. Such low-flow-rate conditions can contribute to a decrease of test substance concentration in inhaled air; near the anima...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370500282555

    authors: Moss OR,James RA,Asgharian B

    更新日期:2006-01-01 00:00:00

  • The temporal profile of cytokines in the bronchoalveolar lavage fluid in mice exposed to the industrial gas phosgene.

    abstract::Diagnosis of an exposure to airborne toxicants can be problematic. Phosgene is used widely in industry for the production of many synthetic products, such as polyfoam rubber, plastics, and dyes. Although nearly 100% of the gas is consumed during processing, there is the potential problem of accidental or even intentio...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370390197254

    authors: Sciuto AM,Clapp DL,Hess ZA,Moran TS

    更新日期:2003-06-01 00:00:00

  • Toxicological comparisons of cigarettes containing different amounts of vanillin.

    abstract::Vanillin is a flavoring agent used in cigarettes. Previous toxicological examinations of the effects on the addition of vanillin to tobacco used mixtures with several other flavoring agents. In the present work, toxicological comparisons were made of experimental cigarettes containing no added vanillin against otherwi...

    journal_title:Inhalation toxicology

    pub_type: 杂志文章

    doi:10.1080/08958370701353205

    authors: Lemus R,Carmines EL,Van Miert E,Coggins CR,Anskeit E,Gerstenberg B,Meisgen TJ,Schramke H,Stabbert R,Völkel H,Terpstra PM

    更新日期:2007-06-01 00:00:00