Abstract：
:In this paper, the difficulties of genetic screening of occupationally exposed subjects for the evaluation of retrospective, and prospective, health risk assessments is illustrated with reference to glutathione S-transferase (GST) function. Individual differences in the magnitude and half-life of adduct levels, derived from background and occupational exposure, are observed largely independently of genetically determined conjugator status. During detoxification, GSTs play a critical role in providing protection against electrophiles and products of oxidative stress. GSTs are a superfamily of enzymes that may have broad and overlapping substrate specificities. Deficiencies of GST isoenzymes may be compensated by the presence of other isoforms and by the use of alternative metabolic pathways. This may be one reason for the abundance of controversial data on GST polymorphisms and adverse health effects.
journal_name
Toxicol Lettjournal_title
Toxicology lettersauthors
Leng G,Lewalter Jdoi
10.1016/s0378-4274(02)00191-1keywords:
subject
Has Abstractpub_date
2002-08-05 00:00:00pages
209-17issue
1-3eissn
0378-4274issn
1879-3169pii
S0378427402001911journal_volume
134pub_type
杂志文章abstract：:The neurotoxin 6-hydroxydopamine (6-OHDA) oxidised sulphydryl groups in glyceraldenyde-3-phosphate dehydrogenase (GAPDH) with loss of the dehydrogenase activity of the enzyme. 5-Hydroxydopamine behaved similarly at higher concentrations. This oxidation was accompanied by a transient rise in the acyl phosphatase (non-p...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(02)00013-9
更新日期：2002-03-10 00:00:00
abstract：:Nerve agent toxicity is primarily due to the synaptic build up of toxic levels of acetylcholine. The acute lethal effects of the nerve agents are generally attributed to respiratory failure caused by a combination of effects at both central and peripheral levels and are further complicated by copious secretions, muscl...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/j.toxlet.2011.09.022
更新日期：2012-01-05 00:00:00
abstract：:Behavioral endpoints offer special challenges to toxicology. One arises from the sometimes conflicting ways in which adverse effects may be expressed. For example, both increases and decreases in response rates of schedule-controlled performance may be produced by a specific agent, depending on the specific schedule. ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(88)90034-3
更新日期：1988-10-01 00:00:00
abstract：:Intraperitoneal injection of the iron-complex, ferric-nitrilotriacetate (Fe-NTA), induces renal proximal tubular damage associated with oxidative damage in vivo. Fe-NTA induced a time-dependent decrease of several polyunsaturated fatty acids (PUFA), together with increased conjugated diene values and decreased cellula...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(01)00372-1
更新日期：2001-09-15 00:00:00
abstract：:Cadmium (Cd) has been reported to induce hypertension in both humans and animals; however, its mechanism has not been clearly elucidated. Vascular tone is one of the factors contributing to hypertension. This study was conducted to investigate the effects of Cd exposure on vascular muscarinic receptor responses to ace...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2007.11.002
更新日期：2008-01-30 00:00:00
abstract：:Physiologically based kinetic (PBK) models for farm animals are of growing interest in food and feed safety with key applications for regulated compounds including quantification of tissue concentrations, kinetic parameters and the setting of safe exposure levels on an internal dose basis. The development and applicat...
journal_title：Toxicology letters
pub_type： 杂志文章,meta分析
doi：10.1016/j.toxlet.2019.10.021
更新日期：2020-02-01 00:00:00
abstract：:Inflammation and microRNAs are involved in human skin cancer; however, their molecular mechanisms remain unclear. Further, a concern in skin cancer research is the identification of biomarkers for early diagnosis and accurate prognosis. To explore new biomarkers of chemical exposure in risk assessment of chemical carc...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2015.06.011
更新日期：2015-09-17 00:00:00
abstract：:Short- and medium-term rodent bioassays have been proposed under ICH guidelines for use in testing for the carcinogenic potential of pharmaceuticals. Further evaluation of these models is needed urgently and coordinated efforts are in progress worldwide to expand the available database. Models currently being investig...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/s0378-4274(99)00227-1
更新日期：2000-03-15 00:00:00
abstract：:Effects of intestinal damage on thyroid carcinogenesis due to amitrole (AT) were examined in F344 male rats initiated with N-bis(2-hydroxypropyl)nitrosamine (DHPN). In experiment 1, rats were provided with diet containing 0.03% AT for 20 weeks after a single subcutaneous injection of DHPN (2800 mg/kg body weight), and...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2005.11.012
更新日期：2006-06-20 00:00:00
abstract：:A considerable body of research over the past fifteen years establishes that in laboratory animals the Ah (aromatic hydrocarbon) receptor (AhR) mediates most, if not all, toxic effects of halogenated aromatic hydrocarbons such as polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and polyhalogenated bip...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/0378-4274(94)90139-2
更新日期：1994-01-01 00:00:00
abstract：:The people studied were male volunteers without occupational and dietary exposure to PAH: 27 smokers (10 cigarettes or more) and 27 non-smokers matched for age and socio-professional category. For each person, all the 24h voided urine samples were reassembled in a single sample. 1-Hydroxypyrene (1-OHPy) and 3-hydroxyb...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2005.09.019
更新日期：2006-04-10 00:00:00
abstract：:Rats (Fisher, Wistar, Donryu and Sprague-Dawley strains) were exposed to 5 approximately 3500 ppm toluene for 8 h, and urine samples were analyzed for hippuric acid and cresols. While hippuric acid increased in proportion to the exposure concentration, a sharp increase in o-cresol excretion was observed at high toluen...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(84)90134-6
更新日期：1984-11-01 00:00:00
abstract：:Sensitivity to chemicals is a toxicological concept, contained in the dose-response relationship. Sensitivity also includes the concept of hypersensitivity, although controversy surrounds the nature of effects from very low exposures. The term multiple chemical sensitivity has been used to describe individuals with a ...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/s0378-4274(01)00536-7
更新日期：2002-03-10 00:00:00
abstract：:When cells from the human cell line NHIK3025 were cultured for 4 days, with hexavalent chromium (K2Cr2O7) at a concentration of 8 . 10(-7)M, the relative cell number was reduced to 38%. This effect of hexavalent chromium was abolished if ascorbic acid and chromate were added simultaneously to the incubation medium, bu...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(82)90146-1
更新日期：1982-09-01 00:00:00
abstract：:alpha-Zearalanol (alpha-ZAL), a phytochemical with both antioxidant and estrogen-like properties, has been shown to retard progression of atherosclerosis and regulate cardiovascular function in part through suppression of endothelin-1 (ET-1) secretion. However, the precise nature behind alpha-ZAL-elicited inhibition o...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2008.05.005
更新日期：2008-07-10 00:00:00
abstract：:Toxic industrial chemicals are used throughout the world to produce everyday products such as household and commercial cleaners, disinfectants, pesticides, pharmaceuticals, plastics, paper, and fertilizers. These chemicals are produced, stored, and transported in large quantities, which poses a threat to the local civ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2015.10.010
更新日期：2016-02-26 00:00:00
abstract：:Uncertainty in risk assessment can be reduced by increasing the use of relevant data specific to the particular xenobiotic and exposed organism. We describe the development of a preliminary, mechanism-based exposure response model for chloroform hepatotoxicity consistig of toxicokinetic (TK) and toxicodynamic (TD) sub...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(95)03528-1
更新日期：1995-12-01 00:00:00
abstract：:Chronic feeding of male Wistar rats with food containing hexachlorobenzene (HCB) at 17.5 mmol/kg induced elevation of serum amino-transferases and bilirubin content, increase of microsomal cytochrome P-450 concentration, and decrease of 5'-nucleotidase, K+,Na+- and Mg2+-adenosine triphosphatase activities in liver pla...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(86)90118-9
更新日期：1986-09-01 00:00:00
abstract：:Ambient and biological monitoring was undertaken among tobacco processors who are chronically exposed to tobacco particulates via nasopharyngeal and cutaneous routes. Ambient monitoring revealed that the inspirable dust concentration was 150-fold higher in the tobacco factory than in the control environment, and was a...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(99)00097-1
更新日期：1999-09-05 00:00:00
abstract：:Lead (Pb) is a toxic heavy metal widespreadly used in industrial field. Prior studies showed that Pb exposure had detrimental effects on osteoblasts. The mechanisms underlying Pb-induced damage are complex. Autophagy can protect cells from various cytotoxic stimuli. In the present study, the aim of our research was to...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2015.09.014
更新日期：2015-12-03 00:00:00
abstract：:Reactivity of phenoxyl radicals towards biomolecules (proteins, nucleic acids and lipids) is essential for antioxidant (protective) versus prooxidant (cytotoxic) effects of phenolic compounds (antioxidants, phytochemicals, environmental pollutants and toxic chemicals). The present study demonstrates for the first time...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(96)03767-8
更新日期：1996-10-01 00:00:00
abstract：:Pregnant rats were given di-n-butyltin dichloride (DBT) by gastric intubation at a dose of 0, 2.5, 5.0, 7.5 or 10.0 mg/kg on days 7-15 of pregnancy. Maternal toxicity occurred in the 7.5 and 10.0 mg/kg groups as evidenced by a significant increase in maternal death and decrease in food consumption and body weight gain...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(91)90047-a
更新日期：1991-11-01 00:00:00
abstract：:Dioxins are metabolized by cytochrome P450, family 1 (CYP1) via the aromatic hydrocarbon receptor (AHR). We determined whether different blood dioxin concentrations are associated with polymorphisms in AHR (dbSNP ID: rs2066853), AHR repressor (AHRR; rs2292596), CYP1 subfamily A polypeptide 1 (CYP1A1; rs4646903 and rs1...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2013.03.013
更新日期：2013-06-07 00:00:00
abstract：:The utility of HepaRG cells as an in vitro cell-based assay system for assessing drug-induced liver injury (DILI) risk was investigated. Seventeen DILI-positive and 15 DILI-negative drugs were selected for the assay. HepaRG cells were treated with each drug for 24h at concentrations that were 1.6-, 6.3-, 25-, and 100-...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2015.04.014
更新日期：2015-07-02 00:00:00
abstract：:The toxicity of benz (e) acephenanthrylene (BeA) has been studied earlier with regard to the carcinogenicity of its metabolites, but its phototogenotoxicity is not well understood. Present study aimed to analyze the photodynamic response of BeA in human skin cell line (A375) under ambient environmental intensity of UV...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2010.08.023
更新日期：2010-11-30 00:00:00
abstract：:Oltipraz (OPZ) is a known inducer of glutathione S-transferases and a mechanism-based inhibitor of cytochrome P450 1A2. Given the detoxification characteristics of this compound, the transcriptional effects of OPZ, along with the related naturally occurring compounds 3H-1,2-dithiole-3-thione (D3T) and sulforaphane (SF...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2004.06.006
更新日期：2004-11-28 00:00:00
abstract：:Pregnant CD-1 mice were given 32 mg/kg of 3,4,3',4'-tetrachlorobiphenyl (TCB) or corn oil vehicle, by gavage, on days 10--16 of gestation. At 1 year of age, the offspring were tested for spontaneous motor activity; the mice were then killed and dopamine (DA) levels and specific DA receptor binding were measured in the...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(81)90087-4
更新日期：1981-03-01 00:00:00
abstract：:Previous in vitro studies showed marked species differences in the reactivating efficiency of oximes between human and animal acetylcholinesterase (AChE) inhibited by organophosphorus (OP) nerve agents. These findings provoked the present in vitro study which was designed to determine the inhibition, aging, spontaneou...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2010.10.009
更新日期：2011-01-15 00:00:00
abstract：:Caloric restriction is known to reduce chemically-induced tumor incidence in laboratory animals. The effect is believed to be mediated in part by modification of hepatic drug metabolism, including both phase I and phase II enzymes. Using aflatoxin B1 (AFB1) as a model carcinogen, we studied the effect of caloric restr...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(92)90150-i
更新日期：1992-07-01 00:00:00
abstract：:Staphylococcal enterotoxin A (SEA) is a potent stimulator of CD4+ and CD8+ T cells, the immunotoxic action of which remains unclear. We investigated the in vitro effects of SEA on freshly isolated human peripheral blood lymphocytes depleted of CD8+ T cells. Proliferation and flow cytometry analysis indicated that SEA ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2007.10.009
更新日期：2008-01-04 00:00:00
