Abstract：
:When 3-nitropropanol (NPOH) was injected into the rumen (30 mg/kg), abomasum (10 mg/kg) or small intestine (10 mg/kg) of sheep, it was rapidly absorbed and converted to 3-nitropropionic acid (NPA). The reticulo-rumen was the major site of absorption for the miserotoxin aglycone but the abomasum and the small intestine also had the capacity to absorb NPOH. When NPA was injected into different regions of the alimentary tract, the reticulo-rumen was also the major site of absorption. Absorption of NPA or NPOH from the small intestine was much more rapid than from the abomasum. Plasma levels of NPA and inorganic nitrite were higher after dosing with NPOH than with NPA indicating a more rapid rate of uptake of the aglycone.
journal_name
Toxicol Lettjournal_title
Toxicology lettersauthors
Pass MA,Majak W,Muir AD,Yost GSdoi
10.1016/0378-4274(84)90002-xsubject
Has Abstractpub_date
1984-10-01 00:00:00pages
1-7issue
1eissn
0378-4274issn
1879-3169pii
0378-4274(84)90002-Xjournal_volume
23pub_type
杂志文章abstract：:Previous in vitro studies showed marked species differences in the reactivating efficiency of oximes between human and animal acetylcholinesterase (AChE) inhibited by organophosphorus (OP) nerve agents. These findings provoked the present in vitro study which was designed to determine the inhibition, aging, spontaneou...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2010.10.009
更新日期：2011-01-15 00:00:00
abstract：:Voltage-activated sodium channels and GABAA receptor-chloride channel complex are among the most important target sites of various environmental neurotoxicants. Pyrethroids keep the sodium channels open for prolonged periods of time leading to hyperexcitation of the entire nervous system. In rat cerebellar Purkinje ne...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/0378-4274(95)03482-x
更新日期：1995-12-01 00:00:00
abstract：:The aim of this study was to investigate the hepatotoxic effect and its underlying mechanism of aloe emodin (AE). AE was docked with the targets of NF-κB inflammatory pathway and P53 apoptosis pathway respectively by using molecular docking technique. To verify the results of molecular docking and further investigate ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2019.02.007
更新日期：2019-05-15 00:00:00
abstract：:A detailed characterisation of the biotransformation pathways followed by the chemical of interest is, evidently, of primordial importance to design reliable biomonitoring programs. This short overview discusses some recent studies that are of potential interest for the development of new avenues of research. Four top...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(99)00077-6
更新日期：1999-09-05 00:00:00
abstract：:Haemolysis by chrysotile fibres may be related to an adsorption of the red blood cell (RBC) membranes on the fibres and not to an interaction between magnesium (Mg) from the fibres and sialic acid from RBC. This was demonstrated using neuraminidase (NANASE)-treated RBC and Mg-depleted chrysotile fibres. The mechanism ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(83)90217-5
更新日期：1983-02-01 00:00:00
abstract：:Polycyclic aromatic hydrocarbons (PAHs) are contaminants that are ubiquitously found in the environment, produced through combustion of organic matter or petrochemicals, and many of which are procarcinogens. The prototypic PAH, benzo[a]pyrene (B[a]P) and the highly carcinogenic dibenzo[def,p]chrysene (DBC) are metabol...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2017.01.008
更新日期：2017-03-05 00:00:00
abstract：:The widespread use of insecticides has amounted to a large scale 'experiment' in natural selection of insects by chemicals of toxicological importance to humans. Specific examples in which the molecular basis of insecticide resistance has been studied in detail are presented here. The biochemical/physiological mechani...
journal_title：Toxicology letters
pub_type： 杂志文章,评审
doi：10.1016/0378-4274(95)03470-6
更新日期：1995-12-01 00:00:00
abstract：:Chronic exposure of humans to fluorine compounds in the air, water and food may be atherogenic via the activation of oxidative stress and increased ROS production. The most important factor that promotes the formation of ROS seems to be the oxidoreduction of electron carriers in the critical points of the respiratory ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2010.03.1167
更新日期：2010-07-01 00:00:00
abstract：:Lead (Pb) exposure impairs the nervous system, of which the injury of cognitive development is obvious. But the mechanism of Pb induced disorders of neuro-transmission remain elusive. In this study, primary hippocampal neurons were exposed to Pb at the dosage of 5 μM from days in vitro (DIV) 3 to DIV14 and the electro...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2018.08.009
更新日期：2018-10-15 00:00:00
abstract：:Iodinated contrast media (CM) can induce apoptosis and necrosis of renal tubular cells. The injuries of endothelial cells induced by CM on the systemic condition have not been fully understood. To assess the toxic effects of non-ionic CM on the glomerular and aortic endothelial cells, iopromide and iodixanol, two kind...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2011.02.011
更新日期：2011-05-10 00:00:00
abstract：:This study attempted the liposomalization of coproporphyrin I (CPI) with hydrophobic properties. Liposomalization of CPI was not successful at any pH when using lactate buffer. In contrast, when using 9% sucrose/10mM phosphate buffer (pH 7.8), CPI liposomes (Lipo-CPI) and polyethyleneglycol (PEG) modified liposomes (P...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2008.09.002
更新日期：2008-11-10 00:00:00
abstract：:Mechanism of PAH mixtures, using granulosa tumour cells, was investigated. Cells were exposed to a mixture of all 16 priority PAHs (M1) or a mixture of five PAHs not classified as human carcinogens (M2). The effect of siAHR, siAHRR and siNFKB2 on the expression of CYP1A1, CYP1B1, GSTM1, ERα, AR and cell proliferation ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2019.04.008
更新日期：2019-08-01 00:00:00
abstract：:The involvement of neurotrophins after radiation injury during brain development were studied in pregnant mice (C 57/B1) exposed on gestation day 15 to X-ray doses of 0.02-2 Gy. Nerve growth factor protein (NGF) and different cholinergic markers were investigated on postnatal day 1 (P1) and day 21 (P21); in situ hybri...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(96)03827-1
更新日期：1997-01-15 00:00:00
abstract：:We recently showed in a rat model of dichromate-induced acute renal failure (ARF) that the elimination but not the distribution of pralidoxime was altered resulting in sustained plasma pralidoxime concentrations. The aim of this study was to compare the efficiency of pralidoxime in normal and acute renal failure rats ...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2009.04.020
更新日期：2009-08-25 00:00:00
abstract：:The toxicity of diethylene glycol butyl ether (DGBE), and its principal metabolite, butoxyethoxyacetic acid (BEAA), were assessed in vitro for rat and human red blood cells. Rat erythrocytes showed evidence of mild hemolysis when exposed to BEAA at concentrations of 5 or 10 mM for 4 h. BEAA treated rat red blood cells...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2003.09.021
更新日期：2005-03-28 00:00:00
abstract：:Acetylcholinesterase (AChE)-induced chewing movements, tremors, convulsions and hind limb abduction at doses of 50-85% LD50 in rats were monitored in order to determine whether the severity of these different signs would correlate with brain AChE levels and the time course of such a relationship. 30 min after subcutan...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(86)90094-9
更新日期：1986-02-01 00:00:00
abstract：:Malathion was applied to roses in three Finnish greenhouses by hand held lance sprayers. The potential dermal exposure of applicators to this insecticide was measured. Total urine production of each applicator was also collected up to 24 h post application. In the urine samples the specific metabolite of malathion, ma...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(02)00181-9
更新日期：2002-08-05 00:00:00
abstract：:Melamine can cause urinary stones related to nephropathy of the kidney and hyperplasia or carcinoma of the bladder, but the mechanism of stone formation is not well understood. In this study, male rats were administered melamine for thirteen weeks to establish melamine bladder stone models and the stones were analysed...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2012.05.017
更新日期：2012-08-03 00:00:00
abstract：:Benzodiazepines have wide-spread used in pharmacotherapy for their anxiolytic, myorelaxant, hypnotic, amnesic and anticonvulsive properties. Despite benzodiazepines are used in clinics over 50 years, they have not been surprisingly tested for capability to induce major drug-metabolizing cytochromes P450. In the curren...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2010.01.004
更新日期：2010-03-15 00:00:00
abstract：:A single intraperitoneal injection of cadmium chloride (CdCl2, 0.32 mg/kg body weight) was administered to 15 adult female palm squirrels (Funambulus pennanti (Wroughton] and the hypothalamic 5-hydroxytryptamine (5-HT), noradrenaline (NA) and dopamine (DA) levels were quantified on the 1st, 7th and 40th day. 5-HT leve...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(88)90082-3
更新日期：1988-05-01 00:00:00
abstract：:The effects of cadmium (Cd) on the immune organs were examined histopathologically. On 2 or 3 days after a single i.p. injection of 1.8 mg Cd/kg body weight into mice, slight loss of body weight, significant decrease of thymus weight and marked increase of spleen weight were observed. Lymph node weight did not show an...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(81)90137-5
更新日期：1981-04-01 00:00:00
abstract：:Several pesticides used as herbicides, insecticides and fungicides are known to be endocrine disrupting chemicals (EDCs). In three pair-matched studies we found changes in sex hormone concentrations and T-lymphocytes in relation to acute and chronic pesticide exposure. After acute exposure, 1 day later the concentrati...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/s0378-4274(99)00051-x
更新日期：1999-06-30 00:00:00
abstract：:Fatty acid composition was studied in milk at day 14 and in liver at day 24 after parturition of lactating rats exposed to 0 ppm, 5 ppm or 25 ppm cadmium (Cd) via drinking water for 17 days during lactation, and in the brain of their offspring at day 19 after birth. In the liver phospholipid fraction, 22:5(n-3) was si...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2003.12.012
更新日期：2004-03-14 00:00:00
abstract：:The target cell(s) of theobromine toxicity on rat testes and reproductive toxicity induced by pure theobromine and cocoa extract are evaluated in the present studies. Theobromine (500 mg/kg x 7 days) inhibited body weight gain in treated rats. Decreased cauda epididymal sperm reserve (38%), seminiferous tubule fluid (...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(94)90159-7
更新日期：1994-02-01 00:00:00
abstract：:Nephrotoxicity limits the therapeutic efficacy of the antineoplastic drug cisplatin. Due to dosage adjustment and appropriate monitoring, most therapeutic courses with cisplatin produce no or minimal kidney damage. However, we studied whether even sub-nephrotoxic dosage of cisplatin poses a potential risk for the kidn...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2014.11.033
更新日期：2015-04-16 00:00:00
abstract：:The effects of menadione on activities and expression of cytochrome P450 (CYP) 1A subfamily (CYP1A) isozymes in rat hepatic tissue were examined. When rats were treated orally with 15 mg/kg menadione for 4 days, the elevation of hepatic CYP1A1/1A2 specific activities in microsomal preparations was detected with approx...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2004.10.001
更新日期：2005-02-15 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
pub_type： 杂志文章
doi：10.1016/j.toxlet.2004.12.002
更新日期：2005-04-10 00:00:00
abstract：:Activity of beta-glucuronidase and cathepsin-D were studied in brain, spinal cord and sciatic nerves of rats at 24 h or 10 days after daily i.p. administration of 50 mg/kg acrylamide. The activities of beta-glucuronidase and cathepsin-D in brain, spinal cord and sciatic nerves remained unaffected on single exposure bu...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(84)90068-7
更新日期：1984-08-01 00:00:00
abstract：:α-asarone is a natural phenylpropene found in several plants, which are widely used for flavoring foods and treating diseases. Previous studies have demonstrated that α-asarone has many pharmacological functions, while some reports indicated its toxicity. However, little is known about its cardiovascular effects. This...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/j.toxlet.2020.02.003
更新日期：2020-05-15 00:00:00
abstract：:Guidelines concerning the preclinical safety assessment of therapeutic proteins are available, e.g. in the European Community (EC Notes for Guidance). Unlike rather rigidly prescribing test systems such as those known for chemical substances, it is agreed that for biotechnologically-produced products, testing may be q...
journal_title：Toxicology letters
pub_type： 杂志文章
doi：10.1016/0378-4274(92)90206-y
更新日期：1992-12-01 00:00:00
