Exposure-response functions in Air Force toxic risk modeling.

abstract：:The murine local lymph node assay (LLNA) has been proposed as a predictive test for the identification of sensitizing agents. We used this test to compare the sensitization potential of NiSO4, K2Cr2O7, CoCl2, Na2PtCl6 and BeSO4, salts of metals which have all been associated with allergic contact dermatitis and either...

journal_title：Toxicology

authors： Mandervelt C,Clottens FL,Demedts M,Nemery B

更新日期：1997-06-06 00:00:00

abstract：:Flucloxacillin is a semi-synthetic penicillin widely used in the prophylaxis and treatment of staphylococcal infections. Severe liver reactions, characterised by delayed cholestatic hepatitis and a prolonged course of recovery, are associated with flucloxacillin therapy. Clinical findings are suggestive of an immune m...

journal_title：Toxicology

authors： Carey MA,van Pelt FN

更新日期：2005-12-01 00:00:00

abstract：:Teratogenicity of daily intraperitoneal (i.p.) injections of 1.5 or 2.0 mg/kg of patulin on days 6 through 17 of pregnancy and mutagenic effects of acute i.p. exposure of 3.0 mg/kg of patulin on male germ cells were evaluated. Resorption of all implanted embryos occurred at 2.0 mg/kg/day of patulin, while a significan...

journal_title：Toxicology

authors： Reddy CS,Chan PK,Hayes AW

更新日期：1978-11-01 00:00:00

abstract：:Clarifying the participation of oxidative stress among possible contributing factors in potassium bromate (KBrO(3))-induced carcinogenesis is of importance from the perspective of human health protection. In the present study, utilizing the antioxidative effects of alpha-tocopherol (alpha-TP) or sodium ascorbic acid (...

journal_title：Toxicology

authors： Umemura T,Tasaki M,Kijima A,Okamura T,Inoue T,Ishii Y,Suzuki Y,Masui N,Nohmi T,Nishikawa A

更新日期：2009-03-04 00:00:00

abstract：:It is widely believed that the nigrostriatal toxicity of MPTP is due to its oxidation by brain monoamine oxidase first to MPDP+, and eventually to MPP+. Following uptake by the synaptic dopamine reuptake system, it is concentrated in the matrix of striatal mitochondria by an energy-dependent carrier, energized by the ...

journal_title：Toxicology

authors： Singer TP,Ramsay RR,McKeown K,Trevor A,Castagnoli NE Jr

更新日期：1988-04-01 00:00:00

abstract：:Cadmium is a heavy metal, which is widely used in industry, affecting human health through occupational and environmental exposure. In mammals, it exerts multiple toxic effects and has been classified as a human carcinogen by the International Agency for Research on Cancer. Cadmium affects cell proliferation, differen...

journal_title：Toxicology

authors： Waisberg M,Joseph P,Hale B,Beyersmann D

更新日期：2003-11-05 00:00:00

abstract：:Subacute exposure of male rats to various concentrations (70-1000 ppm) of dichloromethane (DCM) produces a selective reduction of dopamine (DA) levels without a change of DA turnover in certain types of forebrain DA nerve terminal systems. In the low concentration (70 ppm) a selective reduction of DA turnover was obse...

journal_title：Toxicology

authors： Fuxe K,Andersson K,Hansson T,Agnati LF,Eneroth P,Gustafsson JA

更新日期：1984-02-01 00:00:00

abstract：:Reactive isomeric 3- and 4-trifluoromethylanilines (3-,4-TFMA), and control aniline itself, induced the following effects on biosynthesis of DNA in the liver, kidney, thymus and spleen of rats: (a) The administration of 4-TFMA initially suppressed the utilization of labeled thymidine for splenic DNA synthesis during t...

journal_title：Toxicology

authors： Seifert J,Mostecká H,Kolar GF

更新日期：1993-10-25 00:00:00

abstract：:A large number of published studies support the notion that long term, low level (LTLL) exposure to organophosphorus (OP) esters may cause neurological and neurobehavioral effects. In order to differentiate these from other effects of OP such as the acute cholinergic episodes, intermediate syndrome and organophosphate...

journal_title：Toxicology

authors： Jamal GA,Hansen S,Julu PO

更新日期：2002-12-27 00:00:00

abstract：:Cardiac fibrosis is characterized by net accumulation of extracellular matrix (ECM) proteins in the cardiac interstitium, and contributes to both systolic and diastolic dysfunction in many cardiac pathophysiologic conditions. More specifically, cardiac fibroblasts are activated by a variety of pathological stimuli, th...

journal_title：Toxicology

authors： Tao H,Yang JJ,Shi KH,Deng ZY,Li J

更新日期：2014-09-02 00:00:00

abstract：:The trichothecenes are a group of mycotoxins that target leukocytes and have a wide range of immunomodulatory effects. Differential display analysis was applied to assess the effects of the trichothecenes deoxynivalenol (vomitoxin, DON) and satratoxin G (SG), on mRNA in the RAW 264.7 macrophage cell line. Cells were i...

journal_title：Toxicology

authors： Chung YJ,Yang GH,Islam Z,Pestka JJ

更新日期：2003-04-15 00:00:00

abstract：:The effect of administration of a glutamate-containing protein hydrolysate on the arcuate nucleus of 10-day-old mice was studied by two methods. Arcuate nucleus damage resulted when administration was by a single large subcutaneous dose (100 ml/kg). When the same total dose was administered subcutaneously in five smal...

journal_title：Toxicology

authors： Guzman RJ,Irwin RG,Hansen DM,Hidalgo J

更新日期：1975-09-01 00:00:00

abstract：:Rat kidney slices were produced using a modified version of a mechanical tissue slicer. The slices were incubated with various concentrations of L-cysteine conjugates and mercapturic acids of halogenated alkenes in a submersion incubation system. The slices showed a time- and concentration-dependent toxicity to the ne...

journal_title：Toxicology

authors： Stijntjes GJ,Commandeur JN,te Koppele JM,McGuinness S,Gandolfi AJ,Vermeulen NP

更新日期：1993-03-30 00:00:00

abstract：:Oxidative DNA damage is emerging as an biomarker of effect in studies assessing the health risks of occupational chemicals. Trichloroethylene (TCE) and perchloroethylene (PERC) are used in the dry cleaning industry and their metabolism can produce reactive oxygen compounds. The present study examined the potential for...

journal_title：Toxicology

authors： Toraason M,Clark J,Dankovic D,Mathias P,Skaggs S,Walker C,Werren D

更新日期：1999-10-29 00:00:00

abstract：:Tetrahydrocannabinol (THC), a psychoactive component of marijuana, is known to exert cytotoxicity in immune cells. In the present study, we examined the cytotoxicity of Δ⁸-THC in mouse macrophage J774-1 cells and a possible involvement of cannabinoid receptors and stress-responsive mitogen-activated protein kinases (M...

journal_title：Toxicology

authors： Yamaori S,Ishii H,Chiba K,Yamamoto I,Watanabe K

更新日期：2013-12-15 00:00:00

abstract：:Chronic treatment of BALB and GRS mice with BHT (2,6-di-tert-butyl-4-methylphenol) following a single urethane injection increases lung tumor multiplicity, but this does not occur in CXB4 mice. Previous data suggest that promotion requires the conversion of BHT to a tert-butyl-hydroxylated metabolite (BHTOH) in lung a...

journal_title：Toxicology

authors： Thompson JA,Carlson TJ,Sun Y,Dwyer-Nield LD,Malkinson AM

更新日期：2001-03-07 00:00:00

abstract：:Epidemiological studies in humans and experimental work in rodents suggest that exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), a persistent environmental toxicant, is associated with incidence of heart disease. Although TCDD toxicity depends by and large on the aryl hydrocarbon receptor (AHR), the role of the...

journal_title：Toxicology

authors： Kurita H,Carreira VS,Fan Y,Jiang M,Naticchioni M,Koch S,Rubinstein J,Puga A

更新日期：2016-04-29 00:00:00

abstract：:Ketamine, an anaesthetic agent used in newborns and toddlers, has been shown to induce neurodegeneration and alter adult behavior in mice, when administered during the neonatal period. Mammals have a marked period of rapid brain growth and development (BGS), which is postnatal in mice and rats, spanning the first 3-4 ...

journal_title：Toxicology

authors： Viberg H,Pontén E,Eriksson P,Gordh T,Fredriksson A

更新日期：2008-07-30 00:00:00

abstract：:Simultaneous exposure to cadmium and arsenic is highly probable in the urban area of San Luis Potosi, Mexico due to common localization of copper and zinc smelters. Therefore, in this work, rats were intraperitoneally exposed either to cadmium or arsenic alone, or simultaneously to both metals. The effects of these tr...

journal_title：Toxicology

authors： Díaz-Barriga F,Llamas E,Mejía JJ,Carrizales L,Santoyo ME,Vega-Vega L,Yáñez L

更新日期：1990-11-01 00:00:00

abstract：:We have previously shown that young guinea pigs repeatedly exposed to sidestream cigarette smoke (SS) develop decreased airway reactivity of the C-fiber system without changing reactivity to one of its neurotransmitters, substance P (SP). This study was designed to determine whether the decreased reactivity was due to...

journal_title：Toxicology

authors： Joad JP,Avadhanam KP,Watt KC,Kott KS,Bric JM,Pinkerton KE

更新日期：1996-09-02 00:00:00

abstract：:The mechanism of delta-aminolevulinate dehydratase (delta-ALA-D) inhibition by phenyl selenoacetylene in vitro was investigated in this study. Phenyl selenoacetylene (40-400 microM) inhibition of delta-aminolevulinate dehydratase from rat liver (low speed supernatant fraction, S1 fraction) was partially prevented by i...

journal_title：Toxicology

authors： Folmer V,Bolzan RC,Farina M,Zeni G,Nogueira CW,Emanuelli T,Rocha JB

更新日期：2005-01-31 00:00:00

abstract：:Infusion of hexadecafluoroheptane, a liquid perfluorocarbon released from repaired Althane dialysers was found to be the most probable reason for the deaths of 53 dialysis patients reported in the year 2001. This study focuses on toxic decomposition products generated due to gamma and beta sterilisation of hexadecaflu...

journal_title：Toxicology

authors： Zündorf J,Kremer S,Grüger T

更新日期：2008-01-20 00:00:00

abstract：:To evaluate hydroperoxide generation as a potential mechanism of cyanide neurotoxicity, mice were treated with KCN (7 mg/kg, subcutaneously (s.c.)) and the level of lipid peroxidation (expressed as conjugated dienes) was measured later in various organs. Brain showed elevated conjugated diene levels after cyanide but ...

journal_title：Toxicology

authors： Ardelt BK,Borowitz JL,Maduh EU,Swain SL,Isom GE

更新日期：1994-04-18 00:00:00

abstract：:The widespread use of tributyltin (TBT) as biocides in antifouling paints and agricultural chemicals has led to environmental and marine pollution. Human exposure occurs mainly through TBT contaminated seafood and drinking water. It is a well known endocrine disruptor in mammals, but its molecular mechanism in testicu...

journal_title：Toxicology

authors： Mitra S,Srivastava A,Khandelwal S

更新日期：2013-12-06 00:00:00

abstract：:We determined the threshold concentration of sarin vapor exposure producing miosis in African green monkeys (Chlorocebus aethiops). Monkeys (n=8) were exposed to a single concentration of sarin (0.069-0.701mg/m3) for 10min. Changes in pupil size were measured from photographs taken before and after the exposure. Sarin...

journal_title：Toxicology

authors： Genovese RF,Benton BJ,Oubre JL,Fleming PJ,Jakubowski EM,Mioduszewski RJ

更新日期：2008-02-28 00:00:00

abstract：:Prostaglandin E2 (PGE2) is a critical factor in the pathogenesis of dioxin-induced neonatal hydronephrosis. Since the PGE2 receptor has four subtypes, EP1 - EP4, this study was aimed to challenge the hypothesis that at least one of the four subtypes is responsible for the pathogenesis of dioxin-induced hydronephrosis....

journal_title：Toxicology

authors： Aida-Yasuoka K,Nishimura N,Fujisawa N,Endo N,Narumiya S,Tohyama C

更新日期：2019-03-01 00:00:00

abstract：:This study was designed to evaluate the cardioprotective potential of naringin on lipid peroxides, enzymatic and nonenzymatic antioxidants and histopathological findings in isoproterenol (ISO)-induced myocardial infarction (MI) in rats. Subcutaneous injection of ISO (85 mg/kg) to male Wistar rats showed a significant ...

journal_title：Toxicology

authors： Rajadurai M,Stanely Mainzen Prince P

更新日期：2006-12-07 00:00:00

abstract：:The urinary metabolites from repeated oral doses of 3.7 mg o-phenyl phenol (OPP) to mature and immature dogs and cats were studied. At both age levels, dogs excreted significantly more OPP as sulfate and glucuronide than did cats. Puppies produced 4 times the level of glucuronides than mature dogs. No such age differe...

journal_title：Toxicology

authors： Savides MC,Oehme FW

更新日期：1980-01-01 00:00:00

abstract：:We have found that incubation of heparin plasma with Ni(2+) or Co(2+) at concentrations below 100 microM can stimulate the conversion of complement factor C3 to C3b faster than magnesium, which is the natural cofactor in the alternative complement activation. This conversion was monitored by light absorbance measureme...

journal_title：Toxicology

authors： Acevedo F,Vesterberg O

更新日期：2003-03-14 00:00:00

abstract：:Although several specific micronutrient deficiencies are associated with disease progression and increased mortality risk in HIV/AIDS, and even a simple multivitamin/mineral supplement can prolong survival, this is typically viewed merely as nutritional support of the immune system, and only necessary if there are def...

journal_title：Toxicology

authors： Taylor EW

更新日期：2010-11-28 00:00:00