Showing 1-30 of 32 results for "BCR305"
Thiloka C Ariyasena et al.
Journal of chromatography. A, 1361, 240-254 (2014-08-30)
Retention factors on several columns and at various temperatures using gas chromatography and from reversed-phase liquid chromatography on a SunFire C18 column with various mobile phase compositions containing acetonitrile, methanol and tetrahydrofuran as strength adjusting solvents are combined with liquid-liquid...
N Podechard et al.
Toxicology letters, 206(3), 289-299 (2011-08-30)
1-Nitropyrene (1-NP) is a nitro-polycyclic aromatic hydrocarbon (nitro-PAH) present in diesel exhaust and bound to particular matter in urban air. We show that 1-NP and the referent PAH benzo(a)pyrene (BP) induce apoptosis and a lipid accumulation dependent on cytochrome P450...
Nana Asare et al.
Toxicology and applied pharmacology, 230(2), 175-186 (2008-04-18)
Mechanistic studies of nitro-PAHs (polycyclic aromatic hydrocarbons) of interest might help elucidate which chemical characteristics are most important in eliciting toxic effects. 1-Nitropyrene (1-NP) is the predominant nitrated PAH emitted in diesel exhaust. 1-NP-exposed Hepa1c1c7 cells exhibited marked changes in...
Eun-Jung Park et al.
Toxicology letters, 184(2), 126-133 (2008-12-02)
Nitropyrene (1-NP) is classified as Group 2B carcinogen and is one of the main components of diesel exhaust particles (DEP), which are generated from incomplete combustion of automobile engines to cause human cancer or inflammatory diseases. Although many reports on...
Matthew A Ratcliff et al.
Environmental science & technology, 44(21), 8343-8349 (2010-10-05)
The impacts of biodiesel and a continuously regenerated (catalyzed) diesel particle filter (DPF) on the emissions of volatile unburned hydrocarbons, carbonyls, and particle associated polycyclic aromatic hydrocarbons (PAH) and nitro-PAH, were investigated. Experiments were conducted on a 5.9 L Cummins...
Helén Andersson et al.
Toxicology, 262(1), 57-64 (2009-05-23)
Both epidemiological and experimental studies suggest that exposure to high levels of air pollution is a risk factor associated with cardiovascular disease. Traffic emission is a major source of exposure to persistent air pollutants such as nitrated polycyclic aromatic hydrocarbons...
Johan Øvrevik et al.
Environmental toxicology and pharmacology, 35(2), 235-239 (2013-01-26)
1-nitropyrene (1-NP), a common PAH in diesel exhaust, and its amine metabolite 1-aminopyrene (1-AP) induce distinctly different chemokine-responses in bronchial epithelial cells (BEAS-2B) characterized by increases in CXCL8 and CCL5, respectively. Tumor necrosis factor-α converting enzyme (TACE), which cleaves membrane-bound...
Nobuaki Mizutani et al.
Journal of pharmacological sciences, 105(3), 291-297 (2007-11-08)
It has been hypothesized that air pollution has played a role in the increase in allergy prevalence. However, it remains unclear what exact roles are played by polycyclic aromatic hydrocarbons (PAHs), which are encountered in the environment in the form...
Jyan-Gwo Joseph Su et al.
Chemical research in toxicology, 24(12), 2167-2175 (2011-11-03)
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), 1-nitropyrene (1-NP), and benzo[a]pyrene (BaP) are toxic environmental pollutants. TCDD was shown to suppress p53 expression in response to genotoxic stress and hypoxic conditions. However, the mechanism of TCDD's actions is not clearly understood. Our data showed that...
Lalla Rajaa Rhenimi et al.
Journal of radiation research, 49(6), 615-622 (2008-09-09)
Nitropyrene, a mutagenic and carcinogenic component of diesel exhaust, has been shown to be a potent bacterial and mammalian mutagen. There is, however, some controversy regarding the genotoxic effects of 1-nitropyrene towards yeast. To obtain insights into the mechanisms of...
Johan Øvrevik et al.
Toxicology letters, 219(2), 125-132 (2013-03-06)
We have previously observed that 1-nitropyrene (1-NP) and its amine metabolite 1-aminopyrene (1-AP) induce differential chemokine responses in human bronchial epithelial cells (BEAS-2B) characterized by maximum responses for CXCL8 (IL-8) and CCL5 (RANTES), respectively. In the present study, we further...
Carlos E Crespo-Hernández et al.
The journal of physical chemistry. A, 112(28), 6313-6319 (2008-06-25)
Femtosecond broadband transient absorption experiments of 1-nitropyrene, a nitro-polycyclic aromatic hydrocarbon of environmental concern are presented in cyclohexane and hexane solutions. The transient absorption spectra show the presence of three species that are assigned to the Franck-Condon excited lowest singlet...
Shanen M Sherrer et al.
The Journal of biological chemistry, 284(10), 6379-6388 (2009-01-07)
1-nitropyrene, the most abundant nitro polycyclic aromatic hydrocarbon in diesel emissions, has been found to react with DNA to form predominantly N-(deoxyguanosin-8-yl)-1-aminopyrene (dGAP). This bulky adduct has been shown to induce genetic mutations, which may implicate Y-family DNA polymerases in...
Johany Ringuet et al.
The Science of the total environment, 437, 297-305 (2012-09-06)
Particulate concentrations of polycyclic aromatic compounds (PACs) including, 17 polycyclic aromatic hydrocarbons (PAHs), 9 oxygenated PAHs (OPAHs) and 18 nitrated PAHs (NPAHs) were determined at traffic and suburban sites located in the region of Paris. A 12 h sampling basis...
Nitroarenes (selected): 1-Nitropyrene.
Report on carcinogens : carcinogen profiles, 12, 292-293 (2011-08-24)
Kailin Deng et al.
Journal of agricultural and food chemistry, 63(12), 3161-3167 (2015-03-13)
Carcinogenic nitropolycyclic aromatic hydrocarbons (nitro-PAHs) are ubiquitous in the ambient environment. They are emitted predominantly from internal combustion engines and by reacting polycyclic aromatic hydrocarbons with nitrogen oxide. The emerging evidence that nitro-PAHs are taken up by plants and bioaccumulatd...
Carole Di Giorgio et al.
Journal of environmental quality, 39(2), 558-567 (2010-02-24)
The impact of industrial, rural, and urban activities on two runnels (B1, B2, and B3 from Beausset runnel and V1 and V2 from Vallat du Ceinturon runnel) located in the Palun marshes (Berre lagoon, France) was evaluated by analyzing 16...
Ning Tang et al.
Chemosphere, 107, 324-330 (2014-02-11)
Airborne particulates were collected at a background site (Wajima Air Monitoring Station; WAMS) on the Noto Peninsula, Japan from January 2006 to December 2007. 1-, 2-nitropyrenes (1-, 2-NPs) and 2-nitrofluoranthene (2-NFR), in the particulates were determined with a sensitive HPLC...
IARC monographs on the evaluation of carcinogenic risks to humans, 46, 321-358 (1989-01-01)
Takanori Ohno et al.
Journal of chromatography. A, 1216(21), 4625-4628 (2009-04-21)
To measure the actual exposure of a person to 1-nitropyrene (1-NP) in airborne particulate matter, it is considered more accurate to collect air samples with a portable air sampler than to sample at a fixed location. However, because the portable...
Gisela A Umbuzeiro et al.
Environmental and molecular mutagenesis, 55(6), 510-517 (2014-03-01)
The Salmonella/microsome assay is the most used assay for the evaluation of air particulate matter (PM) mutagenicity and a positive correlation between strain TA98 responses and benzo[a]pyrene (B[a]P) levels in PM has been found. However, it seems that the major...
Takayuki Kameda et al.
Environmental science & technology, 45(8), 3325-3332 (2011-03-17)
The formation of hydroxynitropyrene (OHNP) via a photochemical reaction of 1-nitropyrene (1-NP) was demonstrated using a UV irradiation system. The photoreaction of 1-NP in methanol gave products that were hydroxy-substituted at position 1 and mononitro-substituted at positions 2, 3, 5...
Sushant Murudkar et al.
The journal of physical chemistry. A, 115(39), 10762-10766 (2011-08-25)
Time-resolved emission measurements in subpicosecond time domain have been carried out for 1-nitropyrene in different solvents to understand the mechanism for the observed ultrafast decay of its first excited singlet state. Excited-state dynamics of 1-nitropyrene is found to be independent...
Nana Asare et al.
Mutagenesis, 24(6), 481-493 (2009-08-26)
We previously reported that 1-nitropyrene (1-NP) and 3-nitrofluoranthene (3-NF) elicited apoptotic cell death as well as non-apoptotic programmed cell deaths (PCDs) with paraptotic and necroptotic characteristics, respectively. In the present study, we have further confirmed and extended these findings. Flow...
Wen-Cheng Chu et al.
Chemical research in toxicology, 22(12), 1938-1947 (2009-12-08)
Cytochrome P450 1a1 (Cyp1a1) is a phase I xenobiotic-metabolizing enzyme, the expression of which is mainly driven by the aryl hydrocarbon receptor (AhR). Cyp1a1 messenger (m)RNA is labile. Our study indicates that 1-nitropyrene (1-NP) highly induced Cyp1a1 protein expression, although...
Jyan-Gwo J Su et al.
Toxicology, 244(2-3), 257-270 (2008-01-22)
It is reported that diesel exhaust particles contain more 1-nitropyrene (1-NP) than benzo[a]pyrene (B[a]P), both of which are potent carcinogenic compounds. In this study, we show that 1-NP is more potent in reducing cell viability than B[a]P, pyrene, nitrobenzene, and...
Rafael Arce et al.
The journal of physical chemistry. A, 112(41), 10294-10304 (2008-09-20)
1-Nitropyrene (1NPy) is the most abundant nitropolycyclic aromatic contaminant encountered in diesel exhausts. Understanding its photochemistry is important because of its carcinogenic and mutagenic properties, and potential phototransformations into biologically active products. We have studied the photophysics and photochemistry of...
Yang Yun et al.
Ecotoxicology and environmental safety, 180, 756-761 (2019-06-04)
Nitrated polycyclic aromatic hydrocarbons (Nitro-PAHs) as important organic pollutants are ubiquitous in the atmospheric environment, agricultural soils and aquatic environments to pose a severe polluting risk. However, little is known about the mechanism of Nitro-PAHs genotoxicity in plants. We analyzed...
Simultaneous analysis of oxygenated and nitrated polycyclic aromatic hydrocarbons on standard reference material 1649a (urban dust) and on natural ambient air samples by gas chromatography?mass spectrometry with negative ion chemical ionization
Albinet A, et al.
Journal of Chromatography A, 121(1), 106-113 (2006)
Justin P Miller-Schulze et al.
Journal of exposure science & environmental epidemiology, 23(2), 170-175 (2012-05-17)
Diesel exhaust (DE) is a significant contributor to the toxicity associated with particulate matter (PM). 1-Nitropyrene (1-NP) has been used as a molecular marker for DE, and the urinary metabolites of 1-NP have been proposed as biomarkers for exposure to...

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