Phosgene- and chlorine-induced acute lung injury in rats: comparison of cardiopulmonary function and biomarkers in exhaled breath.

abstract：:Multidrug resistance type 1 P-glycoproteins (P-gp) and multidrug resistance associated proteins (MRP) were studied in differentiated primary human lung cells in culture, in comparison with permanent human lung cell lines and primary alveolar type II cells from rat lung. AII cells exhibited low basal levels of mdr1b mR...

journal_title：Toxicology

authors： Lehmann T,Köhler C,Weidauer E,Taege C,Foth H

更新日期：2001-10-05 00:00:00

abstract：:We provide an overview of the functional interrelationship between genes and proteins related to DNA repair by homologous recombination and cell cycle regulation in relation to the progression and therapy resistance of human tumours. To ensure the high-fidelity transmission of genetic information from one generation t...

journal_title：Toxicology

authors： Henning W,Stürzbecher HW

更新日期：2003-11-15 00:00:00

abstract：:The mechanism underlying the induction of micronuclei induced by rifampicin and nicotine in mouse bone marrow was investigated by fluorescence in situ hybridization assay using mouse minor satellite DNA probe. Colchicine and mitomycin, known to be predominantly clastogenic and aneugenic, respectively were used as posi...

journal_title：Toxicology

authors： Attia SM

更新日期：2007-06-03 00:00:00

abstract：:This study investigated the effect of astaxanthin (ASX; 3,3-dihydroxybeta, beta-carotene-4,4-dione), a water-dispersible synthetic carotenoid, on liver ischemia-reperfusion (IR) injury. Astaxanthin (5 mg/kg/day) or olive oil was administered to rats via intragastric intubation for 14 consecutive days before the induct...

journal_title：Toxicology

authors： Curek GD,Cort A,Yucel G,Demir N,Ozturk S,Elpek GO,Savas B,Aslan M

更新日期：2010-01-12 00:00:00

abstract：:The human keratinocyte cell line, RHEK-1, was used to evaluate the cytotoxicity of benzoyl peroxide (BZP). As determined with the neutral red (NR) cytotoxicity assay, the 24-h midpoint (NR50) toxicity values, in mM, were 0.11 for BZP and 29.5 for benzoic acid, the stable metabolite of BZP. Irreversible cytotoxicity oc...

journal_title：Toxicology

authors： Babich H,Zuckerbraun HL,Wurzburger BJ,Rubin YL,Borenfreund E,Blau L

更新日期：1996-01-08 00:00:00

abstract：:Rats poisoned with one LD50 of thiopental or amytal are shown to increase oxygen consumption when intraperitoneally given sucinate, malate, citrate, alpha-ketoglutarate, dimethylsuccinate or glutamate (the Krebs cycle intermediates or their precursors) but not when given glucose, pyruvate, acetate, benzoate or nicotin...

journal_title：Toxicology

authors： Ivnitsky JJ,Schäfer TV,Malakhovsky VN,Rejniuk VL

更新日期：2004-10-01 00:00:00

abstract：:The use of zinc as a nutritional supplement has become common in many countries. Since zinc has diverse actions, it may be difficult to predict its synergistic and/or antagonistic action in simultaneous presence of drug(s). The combination of imidazole antifungals, but not triazole antifungals, with 3-30 microM ZnCl2 ...

journal_title：Toxicology

authors： Matsui H,Sakanashi Y,Oyama TM,Oyama Y,Yokota S,Ishida S,Okano Y,Oyama TB,Nishimura Y

更新日期：2008-06-27 00:00:00

abstract：:Experiments were done in vivo to determine the effect of oxygen at high pressure (OHP) on NAD+ and NADH in mouse brain cortex. A 7% decrease (N.S.) in NADH was found in brain cortex from mice exposed to 6 atm of 100% oxygen for 8 min, while a 20% decrease (P less than 0.01) in cortical NADH, when compared to controls,...

journal_title：Toxicology

authors： Dodd DE,Faiman MD

更新日期：1982-01-01 00:00:00

abstract：:A single high dose, 75 mg/kg, of clotrimazole (CloTZ) was administered intragastrically (i.g.) to adult male Sprague-Dawley rats. Hepatic CloTZ concentrations were determined in organic extracts of whole liver homogenate, by high-performance liquid chromatography (HPLC). The peak liver CloTZ concentration was found at...

journal_title：Toxicology

authors： Pappas JB,Franklin MR

更新日期：1993-06-04 00:00:00

abstract：:National and international law is an essential component of the array of measures serving to protect against the hostile release of biological or chemical agents, and to help to mitigate the consequences should such a release nevertheless take place. These includes the Geneva Protocol of 1925, the Chemical Weapons Con...

journal_title：Toxicology

authors： Kenyon IR,Gutschmidt K,Cosivi O

更新日期：2005-10-30 00:00:00

abstract：:Though, oxidative stress has been implicated in silica nanoparticles induced toxicity both in vitro and in vivo, but no similarities exist regarding dose-response relationship. This discrepancy may, partly, be due to associated impurities of trace metals that may present in varying amounts. Here, cytotoxicity and oxid...

journal_title：Toxicology

authors： Akhtar MJ,Ahamed M,Kumar S,Siddiqui H,Patil G,Ashquin M,Ahmad I

更新日期：2010-10-09 00:00:00

abstract：:The activity of the haem biosynthetic enzymes delta-aminolaevulinic acid synthetase (ALA.S) and delta-aminolaevulinic acid dehydratase (ALA.D) were measured in the peripheral blood of a group of lead workers and control subjects. The haem precursor delta-aminolaevulinic acid (ALA) was measured in blood and urine, whil...

journal_title：Toxicology

authors： Meredith PA,Moore MR,Campbell BC,Thompson GG,Goldberg A

更新日期：1978-02-01 00:00:00

abstract：:This study is aimed to investigate the inflammation and neurological dysfunction induced by tetrachloro-p-benzoquinone (TCBQ) through Toll-like receptor 4 (TLR4) signaling. We also investigated the protective role of melatonin as an antioxidant and anti-inflammatory agent. In vitro model was established by rat pheochr...

journal_title：Toxicology

authors： Fu J,Xia X,Liu Z,Wang Y,Wang Y,Shi Q,Song X,Song E,Song Y

更新日期：2017-04-15 00:00:00

abstract：:Among exocyclic DNA adducts, etheno (epsilon) bases (epsilond A, epsilond C, N(2),3-epsilond G) are generated by reactions of DNA bases with lipid peroxidation (LPO) products derived from endogenous sources and from the carcinogens vinyl chloride or urethane. The recent development of ultrasensitive methods has made i...

journal_title：Toxicology

authors： Bartsch H,Nair J

更新日期：2000-11-16 00:00:00

abstract：:Cell death triggers the release into extracellular spaces of products of chromatin catabolism, particularly of DNA. A sensitive DNA assay has been used to investigate in the mouse whether the quantitation of plasma DNA may be used as an index of in vivo cytotoxicity. It has been found that toxic doses of bacterial lip...

journal_title：Toxicology

authors： Bret L,Lulé J,Alary C,Appolinaire-Pilipenko S,Pourrat JP,Fournié GJ

更新日期：1990-04-30 00:00:00

abstract：:The contributions of the hepatic microsomal and cytosolic fractions in the metabolic activation of the promutagen 2-aminofluorene into mutagenic intermediates in the Ames test were investigated. Rat hepatic postmitochondrial, microsomal and cytosolic preparations could convert 2-aminofluorene to mutagens, the postmito...

journal_title：Toxicology

authors： Leist M,Ayrton AD,Ioannides C

更新日期：1992-01-01 00:00:00

abstract：:Because occupational hazards of small-scale industries were severe and the occupational health management lagged behind in Shanghai, we selected some districts as experimental units to explore a model of community management and service for the occupational health in small-scale industries for controlling occupational...

journal_title：Toxicology

authors： Wei L,Shi-Da W

更新日期：2004-05-20 00:00:00

abstract：:Ultrafine titanium dioxide (TiO(2)) particles have been shown to exhibit strong cytotoxicity when exposed to UVA radiation, but are regarded as a biocompatible material in the absence of photoactivation. In contrast to this concept, the present results indicate that anatase-sized (10 and 20 nm) TiO(2) particles in the...

journal_title：Toxicology

authors： Gurr JR,Wang AS,Chen CH,Jan KY

更新日期：2005-09-15 00:00:00

abstract：BACKGROUND:Endotoxin/LPS is ubiquitous in our environment. The question whether lipopolysaccharide (LPS) is beneficial or disease-promoting in relation to asthma and allergy has been raised in several recent studies. Some have reported a positive correlation between the level of LPS in house dust and the symptoms of as...

journal_title：Toxicology

authors： Ormstad H,Groeng EC,Duffort O,Løvik M

更新日期：2003-06-30 00:00:00

abstract：:Treatment of rats with beta-alanine increases the urinary taurine levels and markedly reduces the concentration of taurine in the liver. Dosing with carbon tetrachloride (CCl4) during treatment with beta-alanine results in a marked decrease in urinary taurine concomitant with a decrease in food intake. Treatment of an...

journal_title：Toxicology

authors： Waterfield CJ,Turton JA,Scales MD,Timbrell JA

更新日期：1993-01-29 00:00:00

abstract：:Gulf War Illness (GWI) affects 25% of veterans from the 1990-1991 Gulf War (GW) and is accompanied by damage to the brain regions involved in memory processing. After twenty-five years, the chronic pathobiology of GWI is still unexplained. To address this problem, we examined the long-term consequences of GW exposures...

journal_title：Toxicology

authors： Abdullah L,Evans JE,Joshi U,Crynen G,Reed J,Mouzon B,Baumann S,Montague H,Zakirova Z,Emmerich T,Bachmeier C,Klimas N,Sullivan K,Mullan M,Ait-Ghezala G,Crawford F

更新日期：2016-11-30 00:00:00

abstract：:Cisplatin is used as a cytotoxic agent for the management of cervical cancer. However, the severity of the side-effects limits the use of this drug, particularly at high doses. Resistance to cisplatin is often attributed to a disruption in the normal apoptotic response via aberrant activation of pathways such as the m...

journal_title：Toxicology

authors： Leisching GR,Loos B,Botha MH,Engelbrecht AM

更新日期：2015-09-01 00:00:00

abstract：:Sixteen polycyclic aromatic hydrocarbons (PAHs) were screened for their ability to be directly cytotoxic to a cell line from the rainbow trout gill, RTgill-W1. Exposure times of 2 h or less were sufficient for direct cytotoxicity to be detected, which appeared to be caused by a common mechanism, the general perturbati...

journal_title：Toxicology

authors： Schirmer K,Dixon DG,Greenberg BM,Bols NC

更新日期：1998-05-15 00:00:00

abstract：:Some chemicals are harmful in to light-exposed tissues such as skin and eyes. The 3T3 Neutral Red Uptake Phototoxicity Test has been validated and adopted by the Organization of Economic and Community Development (OECD) as a method of evaluating chemical phototoxicity using mouse 3T3 fibroblasts. However, the high rat...

journal_title：Toxicology

authors： Mori T,Higashi K,Nakano T,Ando S,Kuwahara A,Suzuki N,Saito K

更新日期：2017-03-01 00:00:00

abstract：:Metyrapone tartrate, 400 mg/kg i.p. raised the LD50 for acetaminophen from 340 mg/kg i.p. to 540 mg/kg i.p. in fasting male Swiss white mice. The minimum protective dose of metyrapone was 200 mg/kg. Metyrapone was effective in preventing death when given up to 2 h after acetaminophen administration. The LD50 for metyr...

journal_title：Toxicology

authors： Nelson EB,Montes M,Goldstein M

更新日期：1980-01-01 00:00:00

abstract：:No clinical data are available on the acute cutaneous toxicity of spin traps which are frequently used in combination with the electron paramagnetic resonance (EPR) technique for detection of free radicals and reactive oxygen/nitrogen species. The purpose of this study was to evaluate the acute dermatotoxicity of the ...

journal_title：Toxicology

authors： Fuchs J,Groth N,Herrling T

更新日期：2000-10-26 00:00:00

abstract：:Trichloroacetic acid (TCA) is a common drinking water disinfection byproduct that produces a spectrum of liver effects, including hepatomegaly and liver tumors, in mice. It is also an oxidative metabolite of trichloroethylene (TCE), a solvent used in degreasing with widespread environmental exposure, which also produc...

journal_title：Toxicology

authors： Chiu WA

更新日期：2011-07-29 00:00:00

abstract：:An experimental approach was taken to the question of dose-response curves for chemical carcinogenesis, using DNA damage as a biomarker. Female rats were give 13 different doses of 1,2-dimethylhydrazine (from 1.4 to 135,000 micrograms/kg) and the subsequent hepatic DNA damage was determined by the alkaline elution tec...

journal_title：Toxicology

authors： Kitchin KT,Brown JL

更新日期：1996-12-02 00:00:00

abstract：:Chlordecone (CD) impairs biliary excretion of organic anions (including phenolphthalein glucuronide (PG), imipramine polar metabolites, and taurocholate) without evidence of hepatocellular necrosis in rats. In this study we investigated the hypothesis that CD-induced hepatobiliary dysfunction is dependent on CD concen...

journal_title：Toxicology

authors： Rochelle LG,Curtis LR

更新日期：1994-01-26 00:00:00

abstract：:This study evaluated a single intradermal injection model in the guinea pig with subsequent inhalation challenge and serological analysis as a method to predict the potential of chemicals to induce respiratory allergy. Four known respiratory allergens (trimellitic anhydride, diphenyl methane diisocyanate, phthalic anh...

journal_title：Toxicology

authors： Blaikie L,Morrow T,Wilson AP,Hext P,Hartop PJ,Rattray NJ,Woodcock D,Botham PA

更新日期：1995-01-19 00:00:00