Response of a human tumour cell line to chronic potassium dichromate exposure.

abstract：:Oral administration of sodium pyridinethione together with 63Ni2+, 109Cd2+ or 65Zn2+ to non-pregnant mice resulted in very markedly increased levels of the metals in several tissues in comparison with animals given the metals alone. For 63Ni2+ the sodium pyridinethione induced a strong labelling of the pancreatic isle...

journal_title：Toxicology

authors： Jasim S,Tjälve H

更新日期：1986-03-01 00:00:00

abstract：:In this study, we examined the relationship between maternal weight gain deficits induced by protein-and-energy restriction (PER) and pregnancy outcome. We also evaluated whether PER would potentiate the developmental toxicity of cyclophosphamide (CP) and hydroxyurea (HU). Two independent experiments--employing two di...

journal_title：Toxicology

authors： Chahoud I,Kuriyama SN,Paumgartten FJ

更新日期：2002-09-30 00:00:00

abstract：:In order to evaluate the primary DNA damage due to occupational exposure to chromium (VI), DNA strand-breaks and apoptosis in peripheral lymphocytes were measured in a group of 19 chrome-plating workers. DNA strand-breaks was assessed by alkaline (pH>13) single-cell microgel electrophoresis ('comet') assay, while apop...

journal_title：Toxicology

authors： Gambelunghe A,Piccinini R,Ambrogi M,Villarini M,Moretti M,Marchetti C,Abbritti G,Muzi G

更新日期：2003-06-30 00:00:00

abstract：:Malathion is one of the most widely used organophosphorus insecticides in agriculture. However, malathion may be involved in the etiology of human brain dysfunction. Induction of ROS has been proposed as a mechanism of malathion-induced poisoning cases, but there are few data regarding the effects of malathion on oxid...

journal_title：Toxicology

authors： Shieh P,Jan CR,Liang WZ

更新日期：2019-04-01 00:00:00

abstract：:Nonylphenol (NP) has been identified at low levels in surface waters throughout North America. This industrial chemical is primarily used for the production of certain non-ionic surfactants, and has been reported to have weak estrogen-like activity. As estrogen has immunoregulatory properties and is crucial for normal...

journal_title：Toxicology

authors： Karrow NA,Guo TL,Delclos KB,Newbold RR,Weis C,Germolec DR,White KL Jr,McCay JA

更新日期：2004-03-15 00:00:00

abstract：:Long-term exposure to pharmacological agents can select for cells that overexpress efflux transporters. We previously showed that mouse J774 macrophages cultivated for a prolonged period of time with toxic concentrations of the fluoroquinolone ciprofloxacin overexpress the efflux transporter Mrp4 and display a reduced...

journal_title：Toxicology

authors： Vallet CM,Marquez B,Nhiri N,Anantharajah A,Mingeot-Leclercq MP,Tulkens PM,Lallemand JY,Jacquet E,Van Bambeke F

更新日期：2011-12-18 00:00:00

abstract：:Bromate (BrO3-) is a rodent carcinogen that is formed as a drinking water ozone disinfection by-product and also used in some food and consumer products. Therefore, bromate is subject to assessment for its risk to humans. Because the selection of an appropriate model for conducting quantitative cancer risk assessment ...

journal_title：Toxicology

authors： Moore MM,Chen T

更新日期：2006-04-17 00:00:00

abstract：:Mitochondrial dynamics are regulated by two sets of opposed processes: mitochondrial fusion and fission, and mitochondrial biogenesis and degradation (including mitophagy), as well as processes such as intracellular transport. These processes maintain mitochondrial homeostasis, regulate mitochondrial form, volume and ...

journal_title：Toxicology

authors： Meyer JN,Leuthner TC,Luz AL

更新日期：2017-11-01 00:00:00

abstract：:The Comet assay is an often used approach for the assessment of genetic damage in primary cells of exposed populations. In the majority of these studies lymphocytes are used. Therefore, we reviewed human biomonitoring studies of occupational exposure using the Comet assay with lymphocytes. We also tried to elucidate t...

journal_title：Toxicology

authors： Faust F,Kassie F,Knasmüller S,Kevekordes S,Mersch-Sundermann V

更新日期：2004-05-20 00:00:00

abstract：:Troglitazone is a thiazolidinedione antidiabetic agent with insulin-sensitizing activities that was withdrawn from the market in 2000 due to its association with idiosyncratic hepatotoxicity. To address the suspected autoantibody production associated with troglitazone, we investigated autoantibodies in sera from pati...

journal_title：Toxicology

authors： Maniratanachote R,Shibata A,Kaneko S,Yamamori I,Wakasugi T,Sawazaki T,Katoh K,Tokudome S,Nakajima M,Yokoi T

更新日期：2005-12-01 00:00:00

abstract：:This study was designed to evaluate the cardioprotective potential of naringin on lipid peroxides, enzymatic and nonenzymatic antioxidants and histopathological findings in isoproterenol (ISO)-induced myocardial infarction (MI) in rats. Subcutaneous injection of ISO (85 mg/kg) to male Wistar rats showed a significant ...

journal_title：Toxicology

authors： Rajadurai M,Stanely Mainzen Prince P

更新日期：2006-12-07 00:00:00

abstract：:Groundwater (GW) from the Bitterfeld industrial region, Central Germany, is contaminated mainly with monochlorobenzene (MCB). Accordingly, current research addresses the development of feasible in situ groundwater remediation technologies. Although easily degradable under aerobic conditions, MCB persists in the essent...

journal_title：Toxicology

authors： Bittkau A,Geyer R,Bhatt M,Schlosser D

更新日期：2004-12-15 00:00:00

abstract：:Exposure of cultured rat mesangial cells to CdCl2 caused a dose- and time-dependent increase in intracellular glutathione that was significant at 0.5 microM and maximal at 1 microM Cd2+. The effect depended on glutathione synthesis and was masked by inhibiting synthesis with buthionine sulfoximine. The cells responded...

journal_title：Toxicology

authors： Chin TA,Templeton DM

更新日期：1993-01-29 00:00:00

abstract：:The oxidation of guanine to 8-oxo-2'-deoxyguanosine (8-oxo-dG) is one of the most abundant and best studied oxidative DNA lesions and is commonly used as a biomarker for oxidative stress. Over the last decades, various methods for the detection of DNA oxidation products have been established and optimized. However, so...

journal_title：Toxicology

authors： Müller N,Moreno-Villanueva M,Fischbach A,Kienhöfer J,Martello R,Dedon PC,Ullrich V,Bürkle A,Mangerich A

更新日期：2013-08-09 00:00:00

abstract：:Adrenocortical carcinoma (ACC) is an extremely rare and aggressive endocrine malignancy with a poor prognosis. The most common symptom of ACC is hypercortisolism (Cushing's syndrome), which has the highest mortality. Mitotane is used as a steroidogenesis inhibitor for Cushing's syndrome or as a chemical adrenalectomy ...

journal_title：Toxicology

authors： Lin CW,Chang YH,Pu HF

更新日期：2012-08-16 00:00:00

abstract：:Rats exposed by inhalation to 3-trifluoromethylpyridine (3-FMP) for 10, 30 or 90 days showed an unusual response in the nasal passages. Focal histological change including reduction in the number of cell layers, disorganisation, vacuolation and minimal necrosis was confined to the olfactory epithelium. Axon bundles an...

journal_title：Toxicology

authors： Gaskell BA,Hext PM,Pigott GH,Hodge MC,Tinston DJ

更新日期：1988-06-01 00:00:00

abstract：:Gordonia axillaris (Roxb.) Dietrich (Theaceae) is a native to Taiwan and the leaves have been used as an astringent folk medicine. Camelliin B (CB), a macrocyclic hydrolyzable tannin, was isolated from G. axillaris and showed cytotoxic effects in human carcinoma cells. Among the target cells (SKHep-1, Ha-22T, DU-145, ...

journal_title：Toxicology

authors： Wang CC,Chen LG,Yang LL

更新日期：2001-11-30 00:00:00

abstract：:Five male and female rats per dose-group received 2,3,7,8-tetrabromodibenzo-p-dioxin (2,3,7,8-TBDD) once on the first day of the study. Doses of 10, 33, 100, or 300 micrograms 2,3,7,8-TBDD/kg body wt. and the vehicle control were administered by gavage. About 20% of 2,3,7,8-TBDD was excreted via feces. Severe body wei...

journal_title：Toxicology

authors： Ivens IA,Löser E,Rinke M,Schmidt U,Neupert M

更新日期：1992-01-01 00:00:00

abstract：:The cytochrome P-450 enzymes are responsible for the oxidation of xenobiotic chemicals including drugs, pesticides, and carcinogens. These enzymes include cytochrome P450, cytochrome b(5), arylhydrocarbon (benzo[a]pyrene) hydroxylase (AHH), NADPH-cytochrome C reductase and dimethylnitrosamine N-demethylase I (DMN-dI)....

journal_title：Toxicology

authors： Sheweita SA,El-Gabar MA,Bastawy M

更新日期：2001-12-14 00:00:00

abstract：:A CYP3A4 promoter-reporter gene construct has been used to assess the ability of 16 known (in vivo) and putative (in vitro) inducers to transactivate a CYP3A4 reporter gene in HepG2 cells. With the exception of pravastatin, the remaining 15 compounds transactivated the CYP3A4 reporter gene with differing inductive abi...

journal_title：Toxicology

authors： Gibson GG,el-Sankary W,Plant NJ

更新日期：2002-12-27 00:00:00

abstract：:Epidemiological studies have implicated fine particulate matter (PM2.5) as a risk factor for neurodegenerative diseases and neurodevelopmental disorders. However, the underlying molecular mechanisms and the influences of different components remain largely elusive. Here, we extended our previous work to investigate th...

journal_title：Toxicology

authors： Wei H,Feng Y,Liang F,Cheng W,Wu X,Zhou R,Wang Y

更新日期：2017-04-01 00:00:00

abstract：:Subacute exposure of male rats to various concentrations (70-1000 ppm) of dichloromethane (DCM) produces a selective reduction of dopamine (DA) levels without a change of DA turnover in certain types of forebrain DA nerve terminal systems. In the low concentration (70 ppm) a selective reduction of DA turnover was obse...

journal_title：Toxicology

authors： Fuxe K,Andersson K,Hansson T,Agnati LF,Eneroth P,Gustafsson JA

更新日期：1984-02-01 00:00:00

abstract：:The nitric oxide (NO) donor, O(2)-vinyl 1-(pyrrolidin-1-yl)diazen-1-ium-1,2-diolate (V-PYRRO/NO), is metabolized by P450 enzymes to release NO in the liver and possibly other tissues. V-PYRRO/NO has been shown to be hepatoprotective, but little is known about its effect in the kidney, another organ rich in P450s. Thus...

journal_title：Toxicology

authors： Li C,Liu J,Saavedra JE,Keefer LK,Waalkes MP

更新日期：2003-08-01 00:00:00

abstract：:The present study was undertaken to investigate the involvement of oxidative damage in lead-induced toxicity in humans and to enlighten whether oxidative stress indicators are correlated with the known indices of lead toxicity. For these purposes, selected oxidative stress parameters along with some clinical indices o...

journal_title：Toxicology

authors： Gurer-Orhan H,Sabir HU,Ozgüneş H

更新日期：2004-02-15 00:00:00

abstract：:The use of colchicine-specific Fab fragments is of interest in human poisoning. In the present study, we show the efficacy of Fab fragments in reversing colchicine toxicity in mice. High affinity antibodies (Ka = 2 x 10(10) M-1) against colchicine were raised in goats; Fab fragments were purified by DEAE chromatograph...

journal_title：Toxicology

authors： Sabouraud A,Urtizberea M,Grandgeorge M,Gattel P,Makula ME,Scherrmann JM

更新日期：1991-01-01 00:00:00

abstract：:The synthetic pyrethroid insecticide, cypermethrin, was given during gestation to pregnant rats by gavage in corn oil. Peripheral blood and spleen cytotoxic activity of dams and their offspring were then evaluated at different times (30, 60, 90, 120 days) after birth. Pups showed a significant increase in peripheral b...

journal_title：Toxicology

authors： Santoni G,Cantalamessa F,Mazzucca L,Romagnoli S,Piccoli M

更新日期：1997-07-11 00:00:00

abstract：:Adverse drug reactions (ADR) are common and many are thought to have a genetic predisposition. There has been a great deal of interest in the role of P450 enzyme gene polymorphisms in the pathogenesis of adverse reactions. The major impact to date of polymorphic P450 expression has been on pre-clinical drug developmen...

journal_title：Toxicology

authors： Pirmohamed M,Park BK

更新日期：2003-10-01 00:00:00

abstract：:Clarification of the key regulatory steps that lead to nuclear factor-kappa B (NF-kappaB) under cellular and pathological conditions is very important. The action of p38 mitogen-activated protein kinase (MAPK) on the upstream of NF-kappaB activation remains controversial. To examine this issue using an in vivo lung in...

journal_title：Toxicology

authors： Kim HJ,Lee HS,Chong YH,Kang JL

更新日期：2006-08-01 00:00:00

abstract：:Quantum dots (QDs) are potentially beneficial semi-conductor nanocrystals for use in diagnostics and therapeutics. The chemical composition of QDs however, has raised concerns as to their potential toxicity. Although a thorough examination using specific biochemical endpoints is necessary to assess QD toxicity, an und...

journal_title：Toxicology

authors： Clift MJ,Brandenberger C,Rothen-Rutishauser B,Brown DM,Stone V

更新日期：2011-08-15 00:00:00

abstract：:Benzo(a)pyrene (B(a)P) is an environment carcinogen that can enhance cell proliferation by disturbing the signal transduction pathways in cell cycle regulation. The p53 tumor suppressor as a cell cycle check-point determinant plays a critical role in cell proliferation. However, the mechanism of p53 that accounts for ...

journal_title：Toxicology

authors： Wang Z,Qi Y,Chen Q,Yang D,Tang S,Jin X,Gao J,Fu J,Zhou Z,Wang J,Xiao X

更新日期：2009-02-04 00:00:00