Abstract:
:Effects of aluminum (Al) on membrane properties of excitable cells are not fully understood. Several reports have identified cellular membranes as sensitive targets for Al intoxication. In the present study, we tested the hypothesis that treatment with Al would alter membrane fluidity and potential and these changes would correlate with aberrant generation of cellular oxidants. The effects of in vitro Al exposure in resting rat pheochromocytoma (PC-12) cells, a model that exhibits neuron-like properties, were investigated. Treatment of PC-12 cells with Al (>0.01mM) resulted in a concentration-dependent decrease in membrane fluidity. Similar concentrations of Al increased the rate of extracellular acidification, measured by a cytosensor microphysiometer, indicating stimulation of proton extrusion from cells. This change in proton extrusion was accompanied by a rapid and concentration-dependent hyperpolarizion of the cell membrane as determined by decreased fluorescence of a potential-sensitive dye, bis-[1,3-dibutylbarbituric acid]trimethine oxonol [Dibac(4)(3)]. Al-induced perturbations of membrane properties correlated with an increased level of cellular oxidants, indicated by increasing dihydrorhodamine 123 oxidation. Results suggest that acute exposure to Al modifies membrane properties of neuron-like cells and therefore cellular membranes represent a plausible target for Al neurotoxicity. Alterations in membrane potential can have a dramatic impact on cellular communication especially in neurons and may be an important mechanism in Al neurotoxicity.
journal_name
Environ Toxicol Pharmacoljournal_title
Environmental toxicology and pharmacologyauthors
Johnson VJ,Tsunoda M,Murray TF,Sharma RPdoi
10.1016/j.etap.2004.05.011subject
Has Abstractpub_date
2005-02-01 00:00:00pages
221-30issue
2eissn
1382-6689issn
1872-7077pii
S1382-6689(04)00137-1journal_volume
19pub_type
杂志文章abstract::In Pakistan a huge number of workers is routinely exposed to various types of chemical contaminants but there is a dearth of information as to the impact of these agents, due to a lack of a routine surveillance system and proper reporting. Prolonged and sometimes acute occupational exposures to varied organic chemical...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.etap.2012.02.009
更新日期:2012-07-01 00:00:00
abstract::The pathogenesis of atopic dermatitis (AD) involves T helper 2 (Th2) cells, and effective therapies remain elusive due to the paucity of animal models. We aimed to develop a mouse model of an immune system aberration caused by allergen. Experiments were conducted in two phases. In experiment 1, BALB/c mice were sensit...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2017.12.025
更新日期:2018-03-01 00:00:00
abstract:OBJECTIVES:Acetaminophen (APAP) overdose may cause acute liver injury. Ozone therapy (OT) is shown to reduce inflammation and necrosis in several entities. Thus, we have designed this study to evaluate the efficacy of OT in a rat model of APAP-induced liver injury. METHODS:Twenty-seven Sprague-Dawley rats were divided...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2012.02.006
更新日期:2012-07-01 00:00:00
abstract::Quantitative structure - activity relationships (QSARs) which are obtained with a representation of the molecular architecture via simplified molecular input-line entry system (SMILES) are applied to build up predictive models of acute toxicity of pesticides towards Daphnia magna. The acute toxicity towards Daphnia ma...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2020.103459
更新日期:2020-11-01 00:00:00
abstract::Epidermal growth factor receptor (EGFR) is considered as a valid target in the clinical trials of anticancer therapy and tyrosine kinase inhibitors (TKIs) of EGFR are approved for cancer treatments. In present work, cucurbitacin IIb (CuIIb) was confirmed to exhibit the proliferation inhibitory activity in A549 cells. ...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2020.103542
更新日期:2021-01-01 00:00:00
abstract::Rats were given food flavor cinnamaldehyde (CNMA) orally by gavage at the dose of 2.14, 6.96, 22.62 and 73.5mg/kg body weight/day for 10, 30 and 90 days. Only the group of rats treated with CNMA at the dose 73.5mg/kg body weight/day for 90 days showed histological changes in the kidney followed by increased activities...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2008.02.002
更新日期:2008-07-01 00:00:00
abstract::Cannabis and Mandrax abuse is unique to South Africa; and most research has focused on the socio-economic impact rather than the adverse effects on the developing brain. Therefore, the aim of this study is to determine the effects of Mandrax and Cannabis alone and in combination on the developing brain by using primar...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2006.07.005
更新日期:2007-01-01 00:00:00
abstract::Metabolic activity, particularly conjugation, was examined in fish by analyzing pyrene (a four-ring, polycyclic aromatic hydrocarbon) metabolites using high-performance liquid chromatography (HPLC) with fluorescence detector (FD), a mass spectrometry (MS) system, and kinetic analysis of conjugation enzymes. Fourteen f...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2013.05.018
更新日期:2013-09-01 00:00:00
abstract:UNLABELLED:The present research introduces the method of Production of M2000 (β-d-mannuronic acid) and its therapeutic effect on experimental model of nephritis. M2000 was produced using enzymatic and chemical procedure on prepared alginate from Pseudomonas fluorescens. The experimental glomerulonephritis was induced i...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2007.02.002
更新日期:2007-07-01 00:00:00
abstract::The recovery effect of chlorpyrifos (CPF) on antioxidant enzymes, locomotor behaviour and the target enzyme acetylcholinesterase (AChE) interaction were studied after exposure to 297μgL(-1) (LC(50) for 96h) in mosquito fish, Gambusia affinis. Activities of the antioxidant enzymes-superoxide dismutase, catalase, glutat...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2008.03.010
更新日期:2008-09-01 00:00:00
abstract::In the new drugs, greater than 90 % of active pharmaceutical ingredients (APIs) or marketed drugs have poor solubility and bioavailability, which restrict the development of pharmaceutical preparations. The use of crystalline molecular complexes (CMCs) involving API and biocompatible precursors to improve solubility h...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2020.103487
更新日期:2020-11-01 00:00:00
abstract::Inhibition of intercellular communication (IC) between hepa1c1c7 cells was used as a possible bioassay to predict tumor promoting potency of polyhalogenated aromatic hydrocarbons (PAHs). Relative potencies with regard to 2,3,7,8-TCDD to inhibit IC and to induce cytochrome P450IA1/2 (EROD) in these hepa1c1c7 cells were...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/1382-6689(95)00006-2
更新日期:1996-02-15 00:00:00
abstract::Eriocaulon sieboldianum (Sieb. & Zucc. ex Steud.), a genus of Eriocaulon in the Eriocaulaceae family, is an edible and medicinal plant used in traditional Chinese medicine. It was processed into healthcare beverages for expelling wind-heat, protecting eyes, and reducing blood fat. Also, it has been used with other her...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2015.11.001
更新日期:2016-04-01 00:00:00
abstract::Combretastatin A-4 exhibits efficient anti-cancer potential in human tumors, including multidrug-resistant tumors. We evaluated the mutagenic, apoptotic and immunomodulatory potential of two diaryl sulfide analogs of combretastatin A-4, 1,2,3-trimethoxy-5-([4-methoxy-3-nitrophenyl]thio)benzene (analog 1) and 1,2,3-tri...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2015.08.028
更新日期:2015-11-01 00:00:00
abstract::The protection of human health from the adverse effects of cumulative environmental exposure to chemical mixtures is an important issue. Of particular interest is the detection and characterization of interaction among chemicals in complex mixtures. Response surface methodology, often supported by factorial designs, i...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2004.03.012
更新日期:2004-11-01 00:00:00
abstract::The goal of this study was to investigate the mechanisms of nanocopper-induced nephrotoxicity by analyzing renal gene expression profiles phenotypically anchored to conventional toxicological outcomes. Male Wistar rats were given nanocopper (50, 100, 200 mg/kg) and microcopper (200 mg/kg) at different doses for 5 days...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2011.05.014
更新日期:2012-07-01 00:00:00
abstract::The dominant lethal assay was utilized to assess the reproductive performance in male mice, possible genetic hazards, and persistent damage of aluminum (Al). Al chloride, AlCl(3), was administered subcutaneously to CD-1 adult male mice at dosages of 0, 7, or 13mg Al/kg body weight/day for 2 weeks of pre-mating periods...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2004.11.007
更新日期:2005-07-01 00:00:00
abstract::The aim of our study was to examine the effect of calorie restriction (CR) on oxidative and nitrosative liver injury in rats, induced by acute ethanol intoxication. Male Wistar rats were divided into groups: (1) control; (2) calorie-restricted groups with intake of 60-70% (CR60-70) and 40-50% of daily energy needs (CR...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2013.04.002
更新日期:2013-09-01 00:00:00
abstract::In some areas of China, citreoviridin (CIT) is considered one of the risk factors for development of cardiovascular disease (CVD). Apoptosis of endothelial cell may induce vascular endothelium injury and atherosclerosis, which result in CVD probably. In this study, we investigated the effect of CIT on apoptosis and pr...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2014.02.016
更新日期:2014-03-01 00:00:00
abstract::DNA damage caused by environmental agents often lead to many chronic diseases, including cancer. The present study aimed to understand the relative toxicity possessed by Bisphenol A (BPA) and Bisphenol S (BPS) on human bronchial epithelial cells (BEAS-2B). The cells were exposed to either BPA or BPS and evaluated for ...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2018.04.009
更新日期:2018-06-01 00:00:00
abstract::The present investigation was aimed to evaluate the pulmonary toxicity of 10 and 25nm gold nanorods (GNRs) following intra-tracheal instillation in rats using bronchoalveolar lavage (BAL) fluid and lung histopathological analysis. The GNRs displayed that the dose-dependent toxicity via elevated lactate dehydrogenase l...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2017.04.015
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Sulfur mustard is an alkylating agent which cause to short and long term incapacitations on various organs including lung. There is no definite treatment for lung disorders induced by SM exposure. In the present study, the preventive effect of Zataria multiflora (Z. multiflora) on hematological parameters, o...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.etap.2018.01.006
更新日期:2018-03-01 00:00:00
abstract::We examined the genotoxicity of diaveridine and trimethoprim in the bacterial umu test, the bacterial reverse mutation test, the in vitro chromosome aberration test, the in vivo rodent bone marrow micronucleus test in two species, and the in vivo comet assay in five mouse organs. Both compounds were negative in the um...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/s1382-6689(97)00026-4
更新日期:1997-09-01 00:00:00
abstract::Long non-coding RNAs (LncRNAs) are a category of non-coding RNAs (ncRNAs) with a length of 200nt-100kb lacking a significant open reading frame. The study of lncRNAs is a newly established field, due in part to their capability to act as the novel biomarkers in disease. A growing body of research shows that lncRNAs ma...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.etap.2017.08.014
更新日期:2017-10-01 00:00:00
abstract::Coutarea hexandra is a species commonly known in Brazil as quina, and its bark is used in folk medicine. In this study, we assess the mutagenic and DNA-damaging effects of ethanol extracts from C. hexandra stem bark (SCH) and leaves (LCH) by employing the Ames test on the TA98 and TA100 strains of Salmonella typhimuri...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2011.12.003
更新日期:2012-03-01 00:00:00
abstract::This study is intended to explore effective and sensitive biomarkers for kidney damage after low level arsenic (As) exposure and to provide scientific evidence on cut-off values of arsenic concentrations in drinking water. The levels of α1-MG detected in urine samples were found to have statistically significant diffe...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2013.02.010
更新日期:2013-05-01 00:00:00
abstract::It is well known that developmental exposure to polychlorinated biphenyls (PCBs) could cause learning and memory deficits, but the underlying mechanisms are not clear. Actin cytoskeleton is directly involved in synaptic plasticity which is considered critical to learning and memory formation by LIM kinase 1 (LIMK-1)/c...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2006.08.003
更新日期:2007-03-01 00:00:00
abstract::Grains of soybeans were treated with the recommended dose of fenitrothion insecticide, 5mg/kg, and double that dose, before storage for 30 weeks under ambient local conditions. During the storage period, the penetration and distribution of insecticide residues were studied. The amount of surface residues on stored soy...
journal_title:Environmental toxicology and pharmacology
pub_type: 信件
doi:10.1016/j.etap.2008.08.005
更新日期:2009-01-01 00:00:00
abstract::3-N-Oxalyl-l-2,3-diaminopropanoic acid (β-ODAP) induces neurolathyrism, a motor neuron disease. To elucidate the pathogenic mechanism of this process, the action of β-ODAP on the excitatory amino acid (EAA) receptor-mediated currents was examined using cloned EAA receptors expressed in Xenopus oocytes. On the voltage-...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/s1382-6689(96)00067-1
更新日期:1996-12-20 00:00:00
abstract::Nanoparticles have been implicated in the development of pleural effusions in exposed factory workers while in experimental animal studies it has been shown that they induce inflammation, fibrosis and carcinogenesis in the pleura. The scope of this study was to investigate the direct effects of silver nanoparticles ex...
journal_title:Environmental toxicology and pharmacology
pub_type: 杂志文章
doi:10.1016/j.etap.2017.02.009
更新日期:2017-03-01 00:00:00