Abstract:
:Breast cancer is the world's leading cause of death among women. This situation imposes an urgent development of more selective and less toxic agents. The use of natural molecular fingerprints as sources for new bioactive chemical entities has proven to be a quite promising and efficient method. Capsaicin, which is the primary pungent compound in red peppers, was reported to selectively inhibit the growth of a variety tumor cell lines. Here, we report for the first time a novel synthetic capsaicin-like analogue, RPF101, which presents a high antitumor activity on MCF-7 cell line, inducing arrest of the cell cycle at the G2/M phase through a disruption of the microtubule network. Furthermore, it causes cellular morphologic changes characteristic of apoptosis and a decrease of Δψm. Molecular modeling studies corroborated the biological findings and suggested that RPF101, besides being a more reactive molecule towards its target, may also present a better pharmacokinetic profile than capsaicin. All these findings support the fact that RPF101 is a promising anticancer agent.
journal_name
Toxicol Appl Pharmacoljournal_title
Toxicology and applied pharmacologyauthors
de-Sá-Júnior PL,Pasqualoto KF,Ferreira AK,Tavares MT,Damião MC,de Azevedo RA,Câmara DA,Pereira A,de Souza DM,Parise Filho Rdoi
10.1016/j.taap.2012.11.029subject
Has Abstractpub_date
2013-02-01 00:00:00pages
385-98issue
3eissn
0041-008Xissn
1096-0333pii
S0041-008X(12)00518-2journal_volume
266pub_type
杂志文章abstract::We investigated the relative contribution of several cardiorespiratory components to acute lethality produced by N-methylcarbamate cholinesterase (ChE) inhibitors physostigmine, 2-sec-butylphenyl methylcarbamate (BPMC), and 2-isopropoxyphenyl methylcarbamate (PHC) in halothane-anesthetized rabbits. Intravenous injecti...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.2000.8924
更新日期:2000-05-15 00:00:00
abstract::The inter-relationship of "Thresholds" between chemical mixtures and their respective component single chemicals was studied using three sets of data and two types of analyses. Two in vitro data sets involve cytotoxicity in human keratinocytes from treatment of metals and a metal mixture [Bae, D.S., Gennings, C., Cart...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.taap.2006.11.016
更新日期:2007-09-01 00:00:00
abstract::Though nanomaterials (NMs) are being utilized worldwide, increasing use of NMs have raised concerns over their safety to human health and environment. Iron oxide (Fe(2)O(3)) NMs have important applications. The aim of this study was to assess the genotoxicity of Fe(2)O(3)-30nm and Fe(2)O(3)-bulk in female Wistar rats....
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2012.10.016
更新日期:2013-01-01 00:00:00
abstract::There is a clear evidence that environmental pollutants, such as benzo[a]pyrene (B[a]P), can have detrimental effects on the immune system, whereas the underlying mechanisms still remain elusive. Jurkat T cells share many properties with native T lymphocytes and therefore are an appropriate model to analyze the effect...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2013.03.032
更新日期:2013-06-15 00:00:00
abstract::4-Hydroxy-2-trans-nonenal (4HNE), one of the major end products of lipid peroxidation (LPO), has been shown to induce apoptosis in a variety of cell lines. It appears to modulate signaling processes in more than one way because it has been suggested to have a role in signaling for differentiation and proliferation. It...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.taap.2015.10.006
更新日期:2015-12-15 00:00:00
abstract:UNLABELLED:Acetaminophen (APAP) overdose causes severe hepatotoxicity in animals and humans. However, the mechanisms underlying the gender differences in susceptibility to APAP overdose in mice have not been clarified. In our study, APAP (300mg/kg) caused severe liver injury in male mice but 69-77% lower injury in fema...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2014.09.002
更新日期:2014-11-15 00:00:00
abstract::Interferon α (IFNα) is used to treat malignancies and chronic viral infections. It has been found to decrease the rate of drug metabolism by acting on cytochrome P450 enzymes, but no studies have investigated the consequences of IFNα treatment on the CYP3A4 isoform, responsible for the metabolism of a majority of drug...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2011.03.019
更新日期:2011-06-01 00:00:00
abstract::Previous studies in this laboratory have shown that the combined exposure of hydrogen chloride (HCI) and formaldehyde vapors (HCHO) elicited a significant incidence of nasal cancer in rats. In studies performed elsewhere, it has been demonstrated that exposure to formaldehyde alone induced a high nasal cancer response...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(85)90411-9
更新日期:1985-12-01 00:00:00
abstract::Tabun represents the phosphoramidate class of organophosphates that are covalent inhibitors of acetylcholinesterase (AChE), an essential enzyme in neurotransmission. Currently used therapy in counteracting excessive cholinergic stimulation consists of a muscarinic antagonist (atropine) and an oxime reactivator of inhi...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2019.04.007
更新日期:2019-06-01 00:00:00
abstract::The primary objective of this study was to determine and characterize surrogate biomarkers that can predict nephrotoxicity induced by mercuric chloride (HgCl₂) using urinary proton nuclear magnetic resonance (¹H NMR) spectral data. A procedure for (1)H NMR urinalysis using pattern recognition was proposed to evaluate ...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2010.08.017
更新日期:2010-12-01 00:00:00
abstract::Protection against the toxic effects of chronic alcohol consumption was observed in male guinea pigs maintained on a high-ascorbic-acid diet (vitamin C-deficient chow plus 2.0 mg ascorbic acid/ml drinking water) as compared to animals on a low-ascorbic-acid diet (vitamin C-deficient chow and from 0.025 to 0.050 mg asc...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(86)90141-9
更新日期:1986-06-30 00:00:00
abstract::The effects of oral exposure to 0, 5, and 25 mg/kg body wt vomitoxin (VT) on cytokine mRNA levels in spleen, Peyer's patches (PP), liver, kidney, and small intestine were evaluated in B6C3F1 mice at 2 and 4 hr postexposure using RT-PCR in conjunction with Southern hybridization analysis. The abundance of mRNAs for sev...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1995.1132
更新日期:1995-07-01 00:00:00
abstract::Inhalation of asbestos may activate the pulmonary endothelium to promote an inflammatory cell phenotype that participates in the development of pulmonary fibrosis. However, little is known about the effects of asbestos on endothelial cell function. Therefore, endothelial cells were exposed to chrysotile and crocidolit...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1996.0143
更新日期:1996-07-01 00:00:00
abstract::The biological activities of the polysaccharide have attracted more and more attention in the biochemical and medical areas due to their anti-cancer effects. To estimate the anti-tumor mechanism of MAP, a novel polysaccharide from the loach, Misgurnus anguillicaudatus, the apoptosis effects of the polysaccharide on th...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2005.04.019
更新日期:2006-02-01 00:00:00
abstract::Colon cancer is the third most incident type of cancer worldwide. One of the most important risk factors for colon cancer development are inflammatory bowel diseases (IBD), thus therapies focusing on IBD treatment have great potential to be used in cancer prevention. Nature has been a source of new therapeutic and pre...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2016.03.009
更新日期:2016-06-01 00:00:00
abstract::High fetal and neonatal brain levels of methyl mercury (MeHg) have been associated with the abnormal migration of neurons within the cerebellar and cerebral cortices. How MeHg interferes with cellular proliferation, migration, and differentiation is poorly understood. In this study, a cell recognition/cohesion assay b...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(86)90363-7
更新日期:1986-12-01 00:00:00
abstract::Metallothioneins (MTs) are ubiquitous low-molecular-weight proteins that are induced by a variety of inducers, including metals, lipopolysaccharides (LPS), cytokines, oxidative stress, etc., and are thought to play a protective role against various toxic insults. The constitutive level of metallothionein is an importa...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1995.1056
更新日期:1995-03-01 00:00:00
abstract::Previous research has shown that intraperitoneal injection of the solvent pyridine results in a dose- and time-dependent induction of hepatic P450IIE1 in rats, with a twofold increase observed at 6 hr post-treatment. However, inhalation is the primary route of exposure expected for humans exposed to pyridine in labora...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1993.1014
更新日期:1993-01-01 00:00:00
abstract::Pulmonary responses after continuous exposure of rats to concentrations of ozone (O3) ranging from 0.12 to 0.64 ppm were quantified by measuring tissue collagen synthesis rate, tissue protein and DNA content, and various constituents of bronchoalveolar lavage fluid. After 7 days of exposure to 0.64 ppm of O3, lung col...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(86)90252-8
更新日期:1986-07-01 00:00:00
abstract::The disappearance rate of renin from plasma was evaluated in both acutely and chronically lead-exposed rabbits. In addition, the effects of lead (Pb) on in vitro renin secretion were determined with rabbit renal cortical slices. Rabbits acutely exposed to Pb (0.3 to 2.0 mg/kg, iv) demonstrated no increase in plasma re...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(83)90127-8
更新日期:1983-06-15 00:00:00
abstract::Gap junctional intercellular communication appears to be important in the regulation of cellular homeostasis, differentiated cell functions, and growth control in adult tissues. Interruption of intercellular communication by chemical compounds has been shown to be a sublethal response to a number of tumor promoters. T...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(90)90050-5
更新日期:1990-03-01 00:00:00
abstract::Metformin is a first-line drug for the treatment of type 2 diabetes (T2D) and is often prescribed in combination with other drugs to control a patient's blood glucose level and achieve their HbA1c goal. New treatment options for T2D will likely include fixed dose combinations with metformin, which may require preclini...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2009.11.026
更新日期:2010-03-15 00:00:00
abstract::Previous reports from our laboratory indicated that prophylactic protection against cyanide intoxication in mice can be enhanced by administration of chlorpromazine when it is given with sodium thiosulfate. The mechanism of potentiation of sodium thiosulfate by chlorpromazine was studied alone and in combination with ...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(83)90028-5
更新日期:1983-12-01 00:00:00
abstract::The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that mediates toxicity of xenobiotics, such as 2,3,7,8-tetrachlorodibenzo-p-dioxin. Genetic deletion of the AhR leads to cardiac hypertrophy, suggesting a role for the AhR in cardiovascular physiology and disease; however, the pathways invo...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2003.08.008
更新日期:2003-12-01 00:00:00
abstract::The effects of toluene on the sensitivity to seizures induced by aminophylline were investigated. Mice were pretreated with an ip injection of corn oil or toluene (100-500 mg/kg) followed by a timed intravenous infusion of aminophylline at various time intervals to assess the seizure thresholds and lethal doses. Tolue...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2003.08.002
更新日期:2003-12-01 00:00:00
abstract::Combretastatin A-4 (CA-4) has already entered clinical trials of solid tumors over ten years. However, the limited anticancer activity and dose-dependent toxicity restrict its clinical application. Here, we offered convincing evidence that CA-4 induced autophagy in various cancer cells, which was demonstrated by acrid...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2013.11.018
更新日期:2014-01-15 00:00:00
abstract:BACKGROUND:Atmospheric ultrafine particles (UFPs) and pesticide rotenone were considered as potential environmental risk factors for Parkinson's disease (PD). However, whether and how UFPs alone and in combination with rotenone affect the pathogenesis of PD remains largely unknown. METHODS:Ultrafine carbon black (ufCB...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2017.03.005
更新日期:2017-05-01 00:00:00
abstract::Male Wistar rats exposed to a systemic organophosphorus insecticide, phorate [O,O-diethyl S-[(ethylthio) methyl] phosphorothioate] at varying oral doses of 0.046, 0.092 or 0.184mg phorate/kg bw for 14days, exhibited substantial oxidative stress, cellular DNA damage and activation of apoptosis-related p53, caspase 3 an...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/j.taap.2011.12.006
更新日期:2012-02-15 00:00:00
abstract::Assessment of toxic or mutagenic risks associated with phosphorothioate oligonucleotides (PTO) is important. In vitro and in vivo data have shown that PTOs are nontoxic and nonmutagenic. However, these studies do not address interactions between PTOs and other compounds. The sulfur on PTOs may provide a novel reactive...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1006/taap.1995.1126
更新日期:1995-07-01 00:00:00
abstract::Direct additions to culture media of either acetaminophen (APAP) or 7-hydroxy-2-acetylaminofluorene (7-OH-AAF) resulted in abnormal closure of the anterior neuropores of cultured rat embryos in the absence of an exogenous bioactivation system. Concentrations required to produce a 50% incidence of the defect were appro...
journal_title:Toxicology and applied pharmacology
pub_type: 杂志文章
doi:10.1016/0041-008x(89)90192-0
更新日期:1989-12-01 00:00:00