Antigenotoxic effects of cimetidine against benzene induced micronuclei in mouse bone marrow erythrocytes.

abstract：:A multi-unit, dynamic flow, inhalation exposure system which is capable of accommodating 12 mice per unit has been described. Components of the system include a mixing board, one or more glass distributing tubes, and detachable glass chamber tubes. The flow of a specified concentration of test gas exits from the mixin...

journal_title：Toxicology letters

authors： Kapeghian JC,Waters IW,Jones AB

更新日期：1985-02-01 00:00:00

abstract：:Polarographic measurements of the rates of oxygen consumption by isolated rat liver mitochondria respiring on pyruvate/malate in metabolic state 4 revealed that additions of micromolar amounts of chalepin, a naturally occurring furocoumarin resulted in significant decreases in respiratory rates. At 16 microM chalepin,...

journal_title：Toxicology letters

authors： Olorunsogo OO,Emerole GO,Malomo SO,Thabrew MI

更新日期：1983-03-01 00:00:00

abstract：:Two-week oral administration of MDL-19,660, a triazole antidepressant compound, resulted in a dose-related thrombocytopenia in rats given 40-360 mg/kg/d and dogs treated with 5-50 mg/kg/d. Consumptive loss of platelets was not apparent since splenomegaly, hemorrhage, microscopic thrombi or prolonged coagulation times ...

journal_title：Toxicology letters

authors： Yarrington JT,Kociba GJ,Gibson JP

更新日期：1991-04-01 00:00:00

abstract：:The in vitro interactions of carbaryl and carcinogenic N-nitrosocarbaryl with rat liver microsomal monooxygenase activities are compared. The inhibitory effect of the nitroso-compound is demonstrated to be non-competitive on aminopyrine N-demethylase, p-nitroanisole O-demethylase and aniline hydroxylase. The nature of...

journal_title：Toxicology letters

authors： Beraud M,Forgue MF,Pipy B,Derache P

更新日期：1989-02-01 00:00:00

abstract：:In the present study experiments are described, which indicate that the exposure of normal human skin fibroblasts (HSFs) to a low-frequency electromagnetic field of 20 Hz and 7-8 mT does induce terminal differentiation within 14 days of daily exposure of 12 h. As demonstrated by the analysis of the expression level of...

journal_title：Toxicology letters

authors： Löschinger M,Thumm S,Hämmerle H,Rodemann HP

更新日期：1998-08-01 00:00:00

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

authors： Chandra M,Carlton WW

更新日期：1992-09-01 00:00:00

abstract：:Mutagenic activity of aflatoxin B1 (AFB1) was followed in the Ames Salmonella/microsome test using liver S-9 from control and partially hepatectomized (PH) mice. The S-9 preparations from the PH mice were capable of inducing significantly greater AFB1 mutagenic activity to strain TA100 than S-9 preparations from eithe...

journal_title：Toxicology letters

authors： Vandewaa EA,Barney CC,Gentile JM

更新日期：1982-12-01 00:00:00

abstract：:The polychlorinated biphenyls (PCBs) have been demonstrated to be inducers of hepatic microsomal enzymes and some of their effects such as hormonal imbalance, and alteration of lipid and porphyrin metabolism could be ascribed to this mechanism. For this reason, the urinary excretion of D-glucaric acid (DGA), an indire...

journal_title：Toxicology letters

authors： Apostoli P,Mangili A,Carasi S,Manno M

更新日期：2003-09-15 00:00:00

abstract：:Exposure to phthalate esters during sexual differentiation disrupts testosterone and insulin-like three hormones resulting in malformations of androgen- and insulin-like three-dependent tissues. The current study was designed to test the hypothesis that gubernacular lesions would be more prevalent in the DEHP-treated ...

journal_title：Toxicology letters

authors： Wilson VS,Howdeshell KL,Lambright CS,Furr J,Earl Gray L Jr

更新日期：2007-05-15 00:00:00

abstract：:The study aimed to investigate the effects of egg white hydrolysate (EWH) on vascular disorders induced by mercury (Hg). For this, male Wistar rats were treated for 60days: Untreated (saline, i.m.); Mercury (HgCl2, i.m., 1st dose 4.6μg/kg, subsequent doses 0.07μg/kg/day); Hydrolysate (EWH, gavage, 1g/kg/day); Hydrolys...

journal_title：Toxicology letters

authors： Rizzetti DA,Martín Á,Corrales P,Fernandez F,Simões MR,Peçanha FM,Vassallo DV,Miguel M,Wiggers GA

更新日期：2017-11-05 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

authors： Tran HP,Prakash AS,Barnard R,Chiswell B,Ng JC

更新日期：2002-07-07 00:00:00

abstract：:Fenitrothion (FNT) is used worldwide in agricultural and public health settings. Spermatogenesis is a toxicological target of FNT under high-dose exposure. Although anti-androgenic action is postulated to be the mechanism associated with this toxicity, few studies have examined histopathology of androgen-dependent mal...

journal_title：Toxicology letters

authors： Miyake M,Ito Y,Suzuki H,Tomizawa M,Sato H,Liu M,Okamura A,Nakajima T,Ohtani K,Takino H,Inagaki H,Kamijima M

更新日期：2018-03-15 00:00:00

abstract：:Carcinogenic polycyclic aromatic hydrocarbons (PAHs) are known as efficient mutagens and ligands of the aryl hydrocarbon receptor (AhR), which has been suggested to play an important role in prostate carcinogenesis. In order to evaluate the complex relationship between the genotoxicity and the AhR-mediated activity of...

journal_title：Toxicology letters

authors： Hrubá E,Vondráček J,Líbalová H,Topinka J,Bryja V,Souček K,Machala M

更新日期：2011-10-10 00:00:00

abstract：:New psychoactive substances (NPS) are an increasing problem in clinical and forensic toxicology. The knowledge of their metabolism is important for toxicological risk assessment and for developing toxicological urine screenings. Considering the huge numbers of NPS annually appearing on the market, metabolism studies s...

journal_title：Toxicology letters

authors： Richter LHJ,Maurer HH,Meyer MR

更新日期：2017-10-05 00:00:00

abstract：:Hydrazine (Hz) mutagenicity was observed in a test using Escherichia coli B/r strain, WP2 uvrA and was enhanced by the addition of rat liver microsomal fraction containing a generating system, while the enhanced mutagenicity was diminished by the addition of metyrapone to the microsome-free levels. On the other hand, ...

journal_title：Toxicology letters

authors： Noda A,Ishizawa M,Ohno K,Sendo T,Noda H

更新日期：1986-05-01 00:00:00

abstract：:Polycyclic aromatic hydrocarbons (PAHs) are an important group of environmental pollutants, known for their mutagenic and carcinogenic activities. Many PAHs are aryl hydrocarbon receptor (AhR) ligands and several recent studies have suggested that PAHs or their metabolites may activate estrogen receptors (ER). The pre...

journal_title：Toxicology letters

authors： Kummer V,Masková J,Zralý Z,Neca J,Simecková P,Vondrácek J,Machala M

更新日期：2008-08-28 00:00:00

abstract：:The repeated dose toxicity of tetrabromobisphenol A (TBBPA), a flame retardant, was examined in male and female newborn rats given TBBPA orally at 0, 40, 200, or 600 mg/kg per day for 18 days from 4 days of age until weaning at 21 days of age. Half the rats in each dose group were sacrificed for a full gross necropsy ...

journal_title：Toxicology letters

authors： Fukuda N,Ito Y,Yamaguchi M,Mitumori K,Koizumi M,Hasegawa R,Kamata E,Ema M

更新日期：2004-04-21 00:00:00

abstract：:The changes in hepatic metallothionein (MT) and glutathione levels and cadmium distribution were investigated 72 hr after a subcutaneous administration of 1.5 mg Cd2+/kg as CdCl2H2O to normal and partially hepatectomized rats. Partial hepatectomy had no effect on native metallothionein content. Cadmium and MT content ...

journal_title：Toxicology letters

authors： Asokan P

更新日期：1982-06-01 00:00:00

abstract：:Small molecular weight chemicals may irritate tissues via the induction of the production of various proinflammatory and chemotactic molecules. The structure of these irritants is heterogenous, as is the pattern of their effects. Chemicals are potentially allergenic (i.e. haptens) when they are able to bind proteins s...

journal_title：Toxicology letters

authors： Kapsenberg ML

更新日期：1996-08-01 00:00:00

abstract：:Fourteen amino acids protected at the N-terminal and at their side chains were screened for resolving the enantiomers of V-agents by NMR. While none of the shift reagents tested showed really effective separation in proton NMR, two of them (BOC-Gln(Xan)-OH, 16, and Z-Arg(Z)2-OH), 21, with 16 superior to 21) were found...

journal_title：Toxicology letters

authors： Koller M,Thiermann H,Worek F

更新日期：2020-03-01 00:00:00

abstract：:Toluene diisocyanate (TDI), a highly reactive industrial chemical is a leading cause of occupational asthma in westernized countries. It has also been reported to be a skin sensitizer in mice and guinea pigs although instances of skin sensitivity in humans are rare. It is uncertain if skin-contact is necessary to init...

journal_title：Toxicology letters

authors： Ebino K,Ueda H,Kawakatsu H,Shutoh Y,Kosaka T,Nagayoshi E,Lemus R,Karol MH

更新日期：2001-04-08 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

authors： Holmes WW,Keyser BM,Paradiso DC,Ray R,Andres DK,Benton BJ,Rothwell CC,Hoard-Fruchey HM,Dillman JF,Sciuto AM,Anderson DR

更新日期：2016-02-26 00:00:00

abstract：:Effective emergency preparedness and response planning are needed to assist responders in making sound decisions under the stressful and confusing conditions accompanying a major accidental release of hazardous materials. One of the most important decisions to be made is the extent and duration of the evacuation of pe...

journal_title：Toxicology letters

authors： Wiener RK,Shaver DK

更新日期：1989-12-01 00:00:00

abstract：:Exposure to cyanide from gari, a popular cassava food in West Africa, is implicated in the causation of ataxic polyneuropathy and amblyopia, but this has been questioned because cyanide was not detected in gari in a study. This study was carried out to determine if gari is a source of exposure to cyanide. Gari (150 g)...

journal_title：Toxicology letters

authors： Oluwole OS,Onabolu AO,Sowunmi A

更新日期：2002-09-05 00:00:00

abstract：:International scientific committees, regional scientific committees such as those of the European Union, and national regulatory agencies generally use the uncertainly factor approach for establishing acceptable or tolerable intakes of substances that exhibit thresholds of toxicity. No observed adverse effect levels (...

journal_title：Toxicology letters

authors： Galli CL,Marinovich M,Lotti M

更新日期：2008-08-15 00:00:00

abstract：:Oxidative damage plays a key role in septic shock induced by lipopolysaccharide (LPS) which is known to enhance the formation of reactive oxygen species (ROS). In this study, biochemical parameters indicative of oxidative stress were tested in the rat heart following LPS challenge, with and without pretreatment with t...

journal_title：Toxicology letters

authors： Ben-Shaul V,Lomnitski L,Nyska A,Zurovsky Y,Bergman M,Grossman S

更新日期：2001-08-06 00:00:00

abstract：:A comparative evaluation of urinary biomarkers was carried out to characterize benzene exposure in a group of 100 traffic policemen of the city of Parma (Italy). All subjects were monitored once, in two consecutive days characterized by similar climatic conditions but preceded by two windy days. Benzene ambient concen...

journal_title：Toxicology letters

authors： Manini P,De Palma G,Andreoli R,Poli D,Petyx M,Corradi M,Mutti A,Apostoli P

更新日期：2008-09-01 00:00:00

abstract：:We observed transient excretion of dark-brown urine after acute exposure to cobalt in rats and investigated the mechanism of it. We injected cobalt into rats s.c. at a dose of 15 mg/kg and collected urine, peripheral blood, and organ samples at the indicated times after injection. Biochemical and histopathological exa...

journal_title：Toxicology letters

authors： Horiguchi H,Oguma E,Nomoto S,Arao Y,Ikeda K,Kayama F

更新日期：2004-08-01 00:00:00

abstract：:Free fatty acids (FFA), commonly elevated in diabetes and obesity, have been shown to impair endothelial functions and cause oxidative stress, inflammation, and insulin resistance. Anthocyanins represent one of the most important and interesting classes of flavonoids and seem to play a role in preventing cardiovascula...

journal_title：Toxicology letters

authors： Fratantonio D,Speciale A,Ferrari D,Cristani M,Saija A,Cimino F

更新日期：2015-12-15 00:00:00

abstract：:Rats were treated with LiCl or RbCl in drinking water for 65 days. Spleen cells from both treated groups exhibited significantly greater proliferative responses to lipopolysaccharide (LPS) than those from untreated controls. Responses to concanavalin A (Con A) were not affected. Cytotoxic activities of natural killer ...

journal_title：Toxicology letters

authors： Jones JM,Yeralan O,Hines G,Maher M,Roberts DW,Benson RW

更新日期：1990-07-01 00:00:00