Abstract:
:Due to the specific antimicrobial activity of silver nanoparticles (AgNPs), they are widely used in wound dressings, coatings in medical devices and household products. In spite of the well-documented genotoxicity of AgNPs, the molecular mechanisms of relieving AgNP-induced DNA damage stress remain poorly understood. We report here that one of the DNA repair factors, XPF, plays a crucial role in resisting AgNP-induced DNA damage stress in human cells. Following culture with AgNP-containing media, severely decreased colony forming abilities have been observed in XPF mutant and knockdown cells compared with wild type or control cells respectively, demonstrating that XPF is required to resist the AgNP-induced stress. By employing the comet assays, we confirmed that DNA damages were produced in all tested cells following their exposure to AgNPs for 48 h. However, more DNA damage accumulations were observed in XPF mutant and knockdown cells than wild type or control cells respectively. Moreover, severe DNA damage response and the activation of p53-mediated DNA damage response network result from mutated XPF or significantly reduced XPF level in human cells. Together, our results illustrate that XPF is the indispensable factor involved in relieving AgNP-induced DNA damage stress in human cells.
journal_name
Toxicol Lettjournal_title
Toxicology lettersauthors
Wang D,Yang H,Zhou Z,Zhao M,Chen R,Reed SHdoi
10.1016/j.toxlet.2018.02.022subject
Has Abstractpub_date
2018-05-15 00:00:00pages
44-54eissn
0378-4274issn
1879-3169pii
S0378-4274(18)30068-7journal_volume
288pub_type
杂志文章abstract::Primary renal neoplasms in the rats are uncommon. Nephroblastoma is the only renal embryonal tumor of the rat; all other tumors are reported in older rats. The occurrence of spontaneous nephroblastoma in rats has been reported. However, metastasis from the nephroblastoma in rat is extremely rare. Data from 2669 Spragu...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/0378-4274(92)90020-k
更新日期:1992-09-01 00:00:00
abstract::The E-rosetting profiles of T-cells were studied in 47 subjects with a history of poly-drug and alcohol abuse, and compared with 15 normal controls. No change was evident in numbers of total rosette-forming cells (TRFC). However, there was reduction in active and high-affinity rosette-forming cells (ARFC and HARFC). T...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/0378-4274(91)90208-n
更新日期:1991-08-01 00:00:00
abstract::Ethyl glucuronide (EtG) is an ethanol metabolite and EtG is used as a biomarker of alcohol drinking. EtG can be detected in the blood and in several biological matrices including urine, hair and nails. Alcohol consumption during pregnancy is a strong risk factor for fetus health so in the recent years different strate...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2017.04.016
更新日期:2017-06-05 00:00:00
abstract::Computer simulation can be used to integrate existing toxicity information within a biologically realistic framework. Simulation models calculate relevant measures of target tissue dose based on physiological, biochemical and physicochemical properties and readily support the dose, route, species and interchemical ext...
journal_title:Toxicology letters
pub_type: 杂志文章,评审
doi:10.1016/0378-4274(89)90029-5
更新日期:1989-12-01 00:00:00
abstract::In order to study the effect of arsenic on DNA damage, Sprague-Dawley rats were dosed with sodium arsenite (10 mg/kg) with or without 800 microg of benzo(a)pyrene (BP) by intramammilary injection. The animals were sacrificed on day 1, 3, 5, 10 and 27 and the mammary gland tissues were collected for DNA adduct measurem...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(02)00088-7
更新日期:2002-07-07 00:00:00
abstract::The possible role of acetylcholine receptors on the HgCl(2)-induced dopamine (DA) release from rat striatum was investigated by using in vivo brain microdialysis technique after administration of selective nicotinic and muscarinic receptor antagonists, mecamylamine and atropine, respectively. Intrastriatal infusion of...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2008.03.008
更新日期:2008-05-30 00:00:00
abstract::Malignant gliomas are the most common and most aggressive primary brain tumor, and for which differentiation therapy has emerged as a promising candidate strategy. In this study, we used in vitro and in vivo assays to examine the differentiation effects of wogonin, a major active constituent of Scutellaria baicalensis...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2013.07.013
更新日期:2013-10-24 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::The blood-cerebrospinal fluid barrier (BCB) plays a key role in maintaining copper (Cu) homeostasis in the brain. Cumulative evidences indicate that lead (Pb) exposure alters cerebral Cu homeostasis, which may underlie the development of neurodegenerative diseases. This study investigated the roles of Cu transporter 1...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2013.11.034
更新日期:2014-02-10 00:00:00
abstract::Cadmium is a carcinogenic metal known to increase the expression of several protooncogenes in a variety of cells. although the underlying mechanisms are unknown. Renal mesangial cells are smooth muscle cells in which Ca2+ signaling pathways regulate the induction of c-fos through both cAMP-dependent and mitogen-activa...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(98)00015-0
更新日期:1998-03-16 00:00:00
abstract:BACKGROUND:GAPDH, well known for its house-keeping functions, has also been shown to be involved in cell injury, apoptosis and death under conditions of stress such as starvation, chemical injury and oxidative stress. This study examines the effect of GAPDH knockdown on cell injury in response to Rotenone. METHODS:GAP...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2015.02.017
更新日期:2015-05-05 00:00:00
abstract::Neuron specific enolase (ENO2, γ-enolase) is a biomarker used to help identify neuroendocrine differentiation in tumors. This laboratory has shown that ENO2 might be a biomarker for exposure to cadmium and arsenite. In this study these observations are extended to the urothelial cell, where environmental exposures are...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2012.05.003
更新日期:2012-07-07 00:00:00
abstract::The deposition of excess or abnormal collagen characteristic of pulmonary fibrosis can disrupt gas exchange resulting in severe respiratory impairment. There currently are no effective pharmacologic agents available that inhibit the fibrotic process. Pirfenidone (5-methyl-1-phenyl-2-(1H)-pyridone) is an investigationa...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(96)03845-3
更新日期:1997-02-07 00:00:00
abstract::A direct continuous spectrophotometric assay to measure pyrethroid-cleaving enzymes in human serum was developed using cis- and trans-alpha-naphthyl-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate (cis- and trans-naphthyl-Cl2CA). These substrates show a structure very similar to the pyrethroids most often use...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(99)00030-2
更新日期:1999-06-30 00:00:00
abstract::Superparamagnetic iron oxide nanoparticles (SPION) are used as high-sensitive enhancer for magnetic resonance imaging, where they represent a promising tool for early diagnosis of destructive diseases such as rheumatoid arthritis (RA). Since we could demonstrate that professional phagocytes are activated by amino-poly...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2016.01.003
更新日期:2016-03-14 00:00:00
abstract::The European Commission has decided on harmonized classifications for a large number of individual chemicals according to its own directive for classification and labeling of dangerous substances. We have compared the harmonized classifications for acute oral toxicity to the acute oral toxicity data available in the R...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(03)00204-2
更新日期:2003-09-30 00:00:00
abstract::Biological monitoring in humans (HBM) is widely used in the field of occupational and environmental health. In the situation of an unexpected release of hazardous materials HBM may contribute to the medical support and treatment of exposed individuals from the general population or of emergency responders. Such exposu...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2014.03.002
更新日期:2014-12-15 00:00:00
abstract::Human saliva offers a unique noninvasive approach for populational study. Purposes of this study were to investigate the feasibility of using saliva manganese (Mn) concentration as a biomarker of Mn exposure among career welders and to study the variations of Mn, copper (Cu), zinc (Zn), cadmium (Cd), and lead (Pb) in ...
journal_title:Toxicology letters
pub_type: 杂志文章,多中心研究
doi:10.1016/j.toxlet.2007.10.003
更新日期:2008-01-04 00:00:00
abstract::Oral doses of the new cephalosporin cefepime administered to rats for 14 days (40 mg/kg/day) did not affect the activities of the hepatic drug metabolising enzymes measured. By contrast there were highly statistically significant increases in all measured parameters in rats treated with phenobarbitone (80 mg/kg/day), ...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/0378-4274(94)90199-6
更新日期:1994-03-01 00:00:00
abstract::This paper reviews the results from past regulatory and mechanistic inhalation studies in rats with the type II pyrethroid Cyfluthrin. Apart from many chemical irritants, Cyfluthrin was shown to be a neuroexcitatory agent without any inherent tissue-destructive or irritant property. Thus, any Cyfluthrin-induced neuroe...
journal_title:Toxicology letters
pub_type: 杂志文章,评审
doi:10.1016/j.toxlet.2017.10.003
更新日期:2018-01-05 00:00:00
abstract::Pregnant rats were exposed to 0, 100, 200, 400 or 800 ppm of carbon disulfide (CS2), 100 ppm of hydrogen sulfide (H2S) alone or in combination with 400 and 800 ppm CS2, 6 h/d during days 6-20 of gestation. Maternal reproduction and fetal parameters were evaluated on gestational day 21. Treatment with 100 or 200 ppm CS...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/0378-4274(89)90186-0
更新日期:1989-07-01 00:00:00
abstract::Female SWR mice were treated with 1,2-dimethylhydrazine (DMH: 6.8 mg/kg i.p. injection) once weekly for up to 10 weeks, a dosing regime that produced tumours principally within the distal colon (Jackson et al., 1999. Carcinogenesis 20, 509-513). O(6)-Methylguanine (O(6)-MeG) levels, measured using a simple [3H]-based ...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(00)00193-4
更新日期:2000-06-05 00:00:00
abstract::Impairment in cholinergic systems is a highly consistent finding in human dementia. Among cholinergic markers, marked decreases in nicotine binding have been most consistently observed in the telencephalic regions of demented patients and are thought to contribute to the cognitive deficits associated with ageing and a...
journal_title:Toxicology letters
pub_type: 杂志文章,评审
doi:10.1016/s0378-4274(01)00502-1
更新日期:2002-02-28 00:00:00
abstract::In this study, the action of 3-nitropropionic acid (3-NP) on the parameters of the cortical and peripheral evoked potentials was investigated in rats in different administration schemes (20 mg/kg i.p. during recording or 24 h before, and 5x 15 mg/kg daily 28 days before recording) to elucidate some neurophysiological ...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2005.07.006
更新日期:2006-01-25 00:00:00
abstract::A rat bioassay has been developed to provide an objective approach for the identification and classification of upper and lower respiratory tract irritants, with particular emphasis on the concentration-dependent induction and regression of lesions characteristic of asthma, such as persisting non-specific airway hyper...
journal_title:Toxicology letters
pub_type: 杂志文章,评审
doi:10.1016/0378-4274(96)03688-0
更新日期:1996-08-01 00:00:00
abstract::Elevated intracellular Ca(2+) content is implicated in ethanol-induced hepatocyte apoptosis and necrosis. Extracellular Ca(2+) influx has been suggested to play a role in this process. However, the exact Ca(2+)-permeable channel involved in the plasma membrane is still unclear. This study investigated the role of stor...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2011.11.007
更新日期:2012-02-05 00:00:00
abstract::This study demonstrates an intraspecies difference in elimination of methylmercury between two genetic variant strains of mice. Following a single non-toxic dose of 203Hg labeled methylmercury (0.5 mg Hg/kg i.p.), the half-time of 203Hg elimination in the CBA/J inbred strain was 7.4 days compared to 3.0 days in the CF...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/0378-4274(80)90114-9
更新日期:1980-10-01 00:00:00
abstract::Since cell death by apoptosis is achieved through complex interactions between numerous molecular components, cells may fail to die when stimulated because of molecular abnormalities in the apoptosis pathway or in its control mechanisms. Such inappropriate cell survival is well established when apoptosis is suppressed...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(98)00343-9
更新日期:1998-12-28 00:00:00
abstract::We examined the ability of the multidrug resistance-associated protein 1 (MRP1/ABCC1) to transport pesticides, as this transporter mediates the cellular efflux of a variety of xenobiotics, typically as glucuronide, sulfate, or glutathione conjugates. NIH3T3 cells stably expressing MRP1 were 3.37-fold more resistant to...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/s0378-4274(02)00485-x
更新日期:2003-04-30 00:00:00
abstract::Dysregulated cell proliferation and tumorigenesis is frequently encountered in several cancers including hepatocellular carcinogenesis (HCC). Thus, agents that inhibit cell proliferation and restrain hepatic tumorigenesis through cell cycle regulation have a beneficial effect in the treatment of hepatocellular carcino...
journal_title:Toxicology letters
pub_type: 杂志文章
doi:10.1016/j.toxlet.2013.08.018
更新日期:2013-10-23 00:00:00