Molecular biology of insecticide resistance.

abstract：:The dose-response curve obtained in toxicity testing is a mirror image of the susceptibility distribution in the treated population, i.e. it follows increasing tolerance of the individuals to the adverse effects of the chemical under investigation. Defining a dose as a maximum tolerated exposure level, therefore, spli...

journal_title：Toxicology letters

authors： Lutz WK

更新日期：2002-02-07 00:00:00

abstract：:The effects of flavoglaucin from Aspergillus chevalieri (Mangin) Thom et Church on mitochondrial reactions have been investigated to obtain insight into the mode of actions on biomembranes by means of isolated rat liver mitochondria. It was found that flavoglaucin exhibited a strong uncoupling effect on oxidative phos...

journal_title：Toxicology letters

authors： Kawai K,Mori H,Kitamura J

更新日期：1983-12-01 00:00:00

abstract：:Primary cultures of rat hepatocytes were exposed to 3 or 30 microM stable cadmium (Cd) in the presence or absence of 1.8 or 3.6 mM calcium (Ca). The presence of Ca significantly reduced the efflux of lactate dehydrogenase (LDH) from cells regardless of Cd concentration or exposure time. During a 3-h time interval, the...

journal_title：Toxicology letters

authors： Sorensen EM

更新日期：1988-04-01 00:00:00

abstract：:Lipopolysaccharide (LPS) is widely used as a B-lymphocyte mitogen and is known to depress expression of the cytochrome P450 (P450). However, there have been no studies regarding to the effects of the other mitogens on the expression of P450. This study investigated the effects of mitogens on the constitutive and induc...

journal_title：Toxicology letters

authors： Jeong HG

更新日期：1999-01-11 00:00:00

abstract：:5-Azactydine inhibits cell growth by direct cytotoxic action as well as by inhibition of DNA methyl transferase enzyme. Inhibitors of DNMT have been reported to potentiate the therapeutic activity of cisplatin in vitro. Dose dependent bone marrow toxicity, neurotoxicity and nephrotoxicity are the major side effects of...

journal_title：Toxicology letters

authors： Tikoo K,Ali IY,Gupta J,Gupta C

更新日期：2009-12-15 00:00:00

abstract：:Triptolide (TP) is the main ingredient of Chinese herb Tripterygium wilfordii Hook f. (TWHF). Despite of its multifunction in pharmaceutics, accumulating evidences showed that TP caused obvious hepatotoxicity in clinic. The current study investigated the role of Notch1 signaling in TP-induced hepatotoxicity. Our data ...

journal_title：Toxicology letters

authors： Shen F,Xiong Z,Kong J,Wang L,Cheng Y,Jin J,Huang Z

更新日期：2019-01-01 00:00:00

abstract：:Methamphetamine (METH) is a widely abused psychostimulant. Lactulose is a non-absorbable sugar, which effectively decreases METH-induced neurotoxicity in rat. However, the exact mechanisms need further investigation. In this study, 5-week-old male Sprague Dawley rats received METH (15 mg/kg, 8 intraperitoneal injectio...

journal_title：Toxicology letters

authors： Xie XL,He JT,Wang ZT,Xiao HQ,Zhou WT,Du SH,Xue Y,Wang Q

更新日期：2018-06-01 00:00:00

abstract：:An in vivo micronucleus assay using Balb/C male mice was used to examine antigenotoxic effects of cimetidine (CM) on benzene (BZN) induced genotoxic effects. CM not only has therapeutic and immunomudolatory role, but it has also been shown to protect bone marrow stem cells from radiation induced clastogenic effects. T...

journal_title：Toxicology letters

authors： Mozdarani H,Kamali S

更新日期：1998-09-30 00:00:00

abstract：:There have been many concerns about the possible adverse effects of thyroid hormone-disrupting chemicals in the environment. Because thyroid hormones are essential for regulating the growth and differentiation of many tissues, disruption of thyroid hormones during the neonatal period of an organism might lead to perma...

journal_title：Toxicology letters

authors： Fujimoto N,Kitamura S,Uramaru N,Miyagawa S,Iguchi T

更新日期：2018-04-01 00:00:00

abstract：:There has been a significant evolution in the clinical management of the poisoned patient over the last decade. Interventions that were once the cornerstone of treating the poisoned patient have become passé or have come under intense scrutiny. The advent of evidence-based medicine has forced clinical scientists to re...

journal_title：Toxicology letters

authors： Krenzelok EP

更新日期：2002-02-28 00:00:00

abstract：BACKGROUND:Although thousands of different chemicals have been identified in cigarette smoke, the characterization of their urinary metabolites still requires significant research. The aim of this work was to perform an untargeted metabolomic approach to a pilot cross-sectional study conducted on subjects with differen...

journal_title：Toxicology letters

authors： Frigerio G,Mercadante R,Campo L,Polledri E,Boniardi L,Olgiati L,Missineo P,Nash WJ,Dunn WB,Fustinoni S

更新日期：2020-09-01 00:00:00

abstract：:Toxicokinetics is the assessment of systemic exposure in toxicity studies, in which pharmacokinetic data are generated, either as an integral component in the conduct of the nonclinical toxicity studies or in specially designed supportive studies, in order to assess systemic exposure. The data may be used in the inter...

journal_title：Toxicology letters

authors： Aarons L,Graham G

更新日期：2001-03-31 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 antioxidant activity of genistein is associated with preventing atherosclerosis; however, the underlying mechanisms are not fully understood. In this study, human umbilical vein endothelial cells (HUVECs) were pretreated with genistein at different concentrations (10nM, 100nM and 1000nM) for 6h and then exposed to...

journal_title：Toxicology letters

authors： Zhang H,Zhao Z,Pang X,Yang J,Yu H,Zhang Y,Zhou H,Zhao J

更新日期：2017-08-05 00:00:00

abstract：:Cadmium-binding proteins (CdBPs) in the cytosol fractions from several organs of man orally exposed to cadmium (Cd) were examined by gel chromatography. In kidney and liver most of the cadmium (76-87%) in the cytosols was bound to metallothionein, and hepatic metallothionein contained zinc also at a similar level. The...

journal_title：Toxicology letters

authors： Sato M,Takizawa Y

更新日期：1982-05-01 00:00:00

abstract：:Benzene is a human leukemogen, and a bone marrow toxin and carcinogen in experimental animals. The reactive intermediates involved in benzene toxicity and their mechanism(s) of action have not been clearly delineated. We have investigated the clastogenic and cytotoxic effects of trans,trans-muconaldehyde (MUC), a reac...

journal_title：Toxicology letters

authors： Oshiro Y,Balwierz PS,Witz G

更新日期：2001-05-19 00:00:00

abstract：:O,O,S-Trimethylphosphorothioate (OOS-Me) and O,S,S-trimethylphosphorodithioate (OSS-Me) are impurities in technical grade malathion and related insecticides which have been shown to cause delayed death in rats following a single oral dose of 40-60 mg/kg. In connection with studies on the mode of action of these compou...

journal_title：Toxicology letters

authors： Keadtisuke S,Dheranetra W,Fukuto TR

更新日期：1989-04-01 00:00:00

abstract：:Single doses of primaquine did not produce methemoglobinemia in beagle bitches. Repeated daily administration for 12 days produced a gradually rising level of methemoglobin over that time period, unaccompanied by depletion of erythrocytic reduced glutathione. Primaquine was mutagenic in the Ames test in Salmonella typ...

journal_title：Toxicology letters

authors： Marrs TC,Bright JE,Morris BC

更新日期：1987-05-01 00:00:00

abstract：:Prenatal stress is known to affect the development of the brain, and exaggerate the developmental toxicity of chemicals. Many studies of developmental neurotoxicity (DNT) use pregnant rodents mated at the supplier, which consequently suffer from the stress of shipping and of environmental changes. Here, we demonstrate...

journal_title：Toxicology letters

authors： Ogawa T,Kuwagata M,Hori Y,Shioda S

更新日期：2007-11-01 00:00:00

abstract：:Recent epidemiological studies in the United States and in Europe indicate, that the coarse fraction (PM-10) of airborne particulates, smaller than 10 microm and particularly the fine fraction (PM-2.5) smaller than 2.5 microm are responsible for adverse health effects, causing an increasing morbidity and mortality. Fu...

journal_title：Toxicology letters

authors： Hornberg C,Maciuleviciute L,Seemayer NH,Kainka E

更新日期：1998-08-01 00:00:00

abstract：:Epidemiological studies have reported that humans have detectable levels of not only bisphenol A (BPA), but also its halogenated derivatives tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA), in the serum. Our previous study showed that BPA promotes ovarian cancer progression by directly inducing cell p...

journal_title：Toxicology letters

authors： Hoffmann M,Fiedor E,Ptak A

更新日期：2017-03-05 00:00:00

abstract：:In vivo administration of 3-methylcholanthrene (MC) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) produced much higher hepatic microsomal aryl hydrocarbon hydroxylase (AHH) induction than 7,8-benzoflavone (7,8-BF) in both aromatic hydrocarbon (Ah)-responsive and nonresponsive strains of mice. Simultaneous treatment o...

journal_title：Toxicology letters

authors： Kiyohara C,Hirohata T

更新日期：1993-02-01 00:00:00

abstract：:Identification of genetic polymorphisms responsible for reduced DNA repair capacity may allow better cancer prevention. We examined whether variations in genes involved in base-excision (hOGG1, XRCC1) and double strand break (XRCC3) DNA repair contribute to inter-individual differences in genotoxic effects induced in ...

journal_title：Toxicology letters

authors： Mateuca R,Aka PV,De Boeck M,Hauspie R,Kirsch-Volders M,Lison D

更新日期：2005-04-10 00:00:00

abstract：:Oral intubation of 50 and 100 mg/kg acephate inhibited brain acetylcholinesterase (AChE) activity by 45% and 56%, and reduced basal luteinizing hormone (LH) concentration by 29% and 25% after 4 h in white-footed mice (Peromyscus leucopus noveboracensis). Dietary exposure to 25, 100, and 400 ppm acephate for 5 days sub...

journal_title：Toxicology letters

authors： Rattner BA,Michael SD

更新日期：1985-01-01 00:00:00

abstract：:7-Methyldeoxyguanosine (7-medG) may be a useful marker of human exposure to methylating agents at the individual level. Methods of detection, including 32P-postlabeling, HPLC with electrochemical or fluorescence detection, and immunoassays, are critically summarized. These methods have been applied to the analysis of ...

journal_title：Toxicology letters

authors： Bianchini F,Wild CP

更新日期：1994-06-01 00:00:00

abstract：:The environmental neurotoxin β-N-methylamino-L-alanine (BMAA) is not an amino acid that is normally found in proteins. Our previous autoradiographic study of (3)H-labeled BMAA in adult mice unexpectedly revealed a tissue distribution similar to that of protein amino acids. The aim of this study was to characterize the...

journal_title：Toxicology letters

authors： Karlsson O,Jiang L,Andersson M,Ilag LL,Brittebo EB

更新日期：2014-04-07 00:00:00

abstract：:Women over 50 years of age in 32 cadmium(Cd)-polluted and 16 nonpolluted hamlets were studied. Itai-itai disease patients and proteinuria with glucosuria were used as indices of the effect of Cd on health. Unpolished rice samples were collected from 568 households in the same area and analyzed for Cd. The hamlet's ave...

journal_title：Toxicology letters

authors： Nogawa K,Yamada Y,Honda R,Ishizaki M,Tsuritani I,Kawano S,Kato T

更新日期：1983-07-01 00:00:00

abstract：BACKGROUND:The epithelial to mesenchymal transition (EMT) contributes to fibrosis during silicosis. Zinc finger CCCH-type containing 4 protein (ZC3H4) is a novel CCCH-type zinc finger protein that activates inflammation in pulmonary macrophages during silicosis. However, whether ZC3H4 is involved in EMT during silicosi...

journal_title：Toxicology letters

authors： Jiang R,Zhou Z,Liao Y,Yang F,Cheng Y,Huang J,Wang J,Chen H,Zhu T,Chao J

更新日期：2019-06-01 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

authors： Ali D,Ray RS,Hans RK

更新日期：2010-11-30 00:00:00

abstract：:Fusarenon-X (FX), a type B trichothecene mycotoxin, is mainly produced by Fusarium crookwellense, which occurs naturally in agricultural commodities, such as wheat and barley. FX has been shown to exert a variety of toxic effects on multiple targets in vitro. However, the embryonic toxicity of FX in vivo remains uncle...

journal_title：Toxicology letters

authors： Sutjarit S,Nakayama SM,Ikenaka Y,Ishizuka M,Banlunara W,Rerkamnuaychoke W,Kumagai S,Poapolathep A

更新日期：2014-08-17 00:00:00