Abstract:
:As an input to dose assessments, measurements have been made of the clearance of Pu and Am after subcutaneous implantation in rats for six particulate materials and one dust from the Maralinga test sites. The tissue distribution of Pu and Am were measured in groups of six animals at one month and 6 months after implantation. In addition, in vitro solubility tests were carried out on eight different particulate materials. Histological examination of the subcutaneous implantation site was undertaken after one year for selected materials. Autoradiographs of tissue sections showed that particles were surrounded by fibrotic tissue with macrophage and polymorphonuclear cell infiltration, the normal tissue response to foreign materials. The clearance data have been used to make estimates of the likely range in potential radiation doses in humans. To calculate the dose from dissolved 239Pu and 241Am, four different situations have been considered. For the dust, the results suggest that dissolution essentially ceases after the removal of Pu and Am from the surfaces of dust particles. From the values obtained, the acute release of a fraction of 10(-2) of both nuclides from a dust contaminated wound was assumed. For a number of particles the results suggested continued dissolution and the clearance of 10(-3) per year of both nuclides, continuing for a number of years, has therefore been considered. For the least soluble particles, there was no clear evidence of continued clearance and the acute release of 10(-4) has therefore been taken as a lower estimate for dose calculations.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Harrison JD,Hodgson A,Haines JW,Stather JWdoi
10.1177/096032719301200410subject
Has Abstractpub_date
1993-07-01 00:00:00pages
313-21issue
4eissn
0960-3271issn
1477-0903journal_volume
12pub_type
杂志文章abstract::1. A modified mouse liver slice culture technique was established and the viability of the system was assessed on the basis of leakage of cytosolic enzymes viz. lactate dehydrogenase (LDH), alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartic aminotransferase (AST) and slice histology. 2. This system w...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719601500202
更新日期:1996-02-01 00:00:00
abstract::Alcohol levels were measured in 15 cerebrospinal fluid (CSF) samples and 14 blood samples from grade III and IV male alcoholic patients with signs of nervous system involvement, and compared with levels detected in 11 CSF samples and 11 blood samples from abstemious patients or patients with grade I or II alcoholism w...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719201100313
更新日期:1992-05-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate, the cytotoxicity of orthodontic composites in vitro as a function of degree of conversion (DC) and the light curing units (LCU) employed on mouse fibroblast (L929). MATERIALS AND METHODS:Cured samples of the composites Light bond (Reliance Orthodontic Products, Itasca,...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113520020
更新日期:2014-10-01 00:00:00
abstract::The benefits and costs are discussed for the possibility of using pups generated in breeding studies for additional assessments, such as evaluating immunotoxicity. Such an approach is logistically challenging, but not overwhelming. ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327102ht291oa
更新日期:2002-09-01 00:00:00
abstract::Celecoxib has been shown to have antitumor effect in previous studies but the mechanisms are unclear. The effect of celecoxib on cytosolic Ca(2+) concentrations ([Ca(2+)]i) and viability in HA59T human hepatoma cells was explored. The Ca(2+)-sensitive fluorescent dye fura-2 was applied to measure [Ca(2+)]i. Celecoxib ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112472996
更新日期:2014-11-01 00:00:00
abstract::Okadaic acid (OA) is the main toxin produced by dinoflagellates, which can accumulate in the hepatopancreas of mussels and cause diarrhoetic shellfish poisoning in consumers. This toxin is also a tumour promoter and a specific potent inhibitor of protein phosphatases 1 and 2A. The results in this study show for the fi...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719601500307
更新日期:1996-03-01 00:00:00
abstract::The majority of households in rural India still rely on unprocessed solid biomass for domestic energy. The aim of this study was to investigate whether chronic exposure to biomass smoke causes activation of leukocytes and the formation of leukocyte-platelet aggregates. We conducted flow cytometric analysis of beta2 Ma...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327106074603
更新日期:2006-11-01 00:00:00
abstract::1. Four different concentrations of quinalphos and methyl parathion were tested on human peripheral lymphocytes over different time periods, for the analysis of chromosomal aberrations and sister chromatid exchanges (SCEs). 2. A significant increase in chromosomal aberrations was observed when cells were treated with ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719000900605
更新日期:1990-11-01 00:00:00
abstract::Clinical and experimental studies have shown the adverse effects of excess glucocorticoid on testicular testosterone production. The NADPH co-enzyme has been recognized as an important factor that regulates several steps in steroidogenesis, while glucose oxidation acts as a limiting factor on testicular testosterone p...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327106ht591oa
更新日期:2006-03-01 00:00:00
abstract::The fixed-dose procedure (FDP) was introduced as OECD Test Guideline 420 in 1992, as an alternative to the conventional median lethal dose (LD50) test for the assessment of acute oral toxicity (OECD Test Guideline 401). The FDP uses fewer animals and causes less suffering than the conventional test, while providing in...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327102ht239oa
更新日期:2002-04-01 00:00:00
abstract::1. This study examines the effect of treating rats with gentamicin (80 mg kg-1 day-1 intramuscularly (i.m.), for 6 days) alone or with either L-thyroxine or the anti-thyroid drug carbimazole. 2. Gentamicin produced significant increases in serum creatinine and urea concentrations, and significantly reduced the activit...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719501400103
更新日期:1995-01-01 00:00:00
abstract::Hexafluorocyclobutene (HFCB), a reactive organohalogen gas, causes overwhelming pulmonary oedema. We investigated its effect on the rat lung surfactant system, comparing its action on type II pneumocytes with air-exposed rats. The inflammatory cell population and protein content of bronchoalveolar lavage fluid was ana...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032701678227686
更新日期:2001-05-01 00:00:00
abstract::It has been argued that the phenomenon of hormesis should prompt us to revise current regulatory policy in order to take beneficial effects of small doses of various agents into account. I argue that three problems--the comparative smallness of hormetic effects, the fine-tuning problem, and the problem of aggregated a...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1177/0960327108098490
更新日期:2008-08-01 00:00:00
abstract::A retrospective review of medical records was carried out to determine the pattern of drug and chemical poisoning cases admitted to a teaching hospital in Malaysia. Medical records of patients admitted during the period January 1987 to December 1995 were reviewed. They accounted for 0.2% of total admissions during the...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327102ht260oa
更新日期:2002-07-01 00:00:00
abstract::Coronary heart disease and in particular its most serious form - acute myocardial infarction (AMI) - represents the most common cause of mortality in developed countries. Better prognosis may be achieved by understanding the etiopathogenetic mechanisms of AMI. Therefore, a catecholamine model of myocardial injury, whi...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327109350665
更新日期:2009-10-01 00:00:00
abstract::Formaldehyde is a physiological intermediary metabolite taking part in many biological process in the body. It is a constituent of many items of daily use, including foods. It is also used in medicine for treatment of some conditions. A 40% solution of formaldehyde in water is known as formalin. Formalin is irritating...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1191/096032700678815954
更新日期:2000-06-01 00:00:00
abstract::Seafood is considered by nutritionists to be a high source of omega 3 long-chain polyunsaturated fatty acids (n-3 LC-PUFAs) which are involved in prevention of cardiovascular diseases. The aim of the present study is firstly to detect the presence of organochlorine pesticides and heavy metals in some fresh seafood of ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327110396535
更新日期:2011-10-01 00:00:00
abstract::The second-generation selective 5-HT2 receptor antagonists and reuptake inhibitors (SARIs) class antidepressants are known to have fewer cardiovascular side effects than the older ones. However, several case reports showed that trazodone, one of the second-generation SARIs, induces QT prolongation, cardiac arrhythmia,...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115595683
更新日期:2016-05-01 00:00:00
abstract::To clarify the reproductive toxicity of polychlorinated biphenyl compounds through determination of testicular lipid peroxidation, reactive oxygen species and enzymatic and non-enzymatic antioxidants in rats exposed to Aroclor 1254. Adult male rats were administered Aroclor 1254 at a dose of 2 mg/kg per day ip for 30 ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327105ht500oa
更新日期:2005-02-01 00:00:00
abstract::The regulation of osteoblast proliferation is a key factor in maintaining bone mass. The enhancement of this process can be achieved by stimulating the proliferation of these cells. Mechanical stimulation is one of the important enhancing factors, but the exact cellular mechanisms of mechanical stimulation, i.e., mech...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327103ht362oa
更新日期:2003-05-01 00:00:00
abstract::Although ingestion of methyl ethyl ketone peroxide (MEKP) is rare, it carries a high risk of morbidity and mortality. This paper reports the first such case from Turkey in which a 70-year-old man unintentionally ingested MEKP in his kitchen. The patient was brought into the emergency department (ED) within 1 hour of i...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327111407230
更新日期:2011-12-01 00:00:00
abstract::3,4-Methylenedioxymethamphetamine (MDMA) is a powerfully addictive psychostimulant with pronounced effects on the central nervous system, but the precise mechanism of MDMA-induced toxicity remains unclear, specifically on the retina. This study was performed to investigate the effects of MDMA treatment on the retina a...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327120930253
更新日期:2020-11-01 00:00:00
abstract::1 The cytotoxicity of dichlorobenzenes in cultured rat liver slices has previously been shown to be strain specific and biotransformation related. 2 In order to extrapolate animal models to humans, the dichlorobenzenes were incubated with human liver slices to try to clarify their hepatotoxic potential in man. 3 The d...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/096032719101000510
更新日期:1991-09-01 00:00:00
abstract::Many industrial and agricultural chemicals have steroid hormone agonist or antagonist activities and disrupt hormone-regulated gene expression. The widely-used agricultural insecticide, diazinon, was evaluated using MCF-7 cells - a breast cancer-derived, estrogen-dependent, human cell line - to examine the capacity of...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/0960327106ht593oa
更新日期:2006-02-01 00:00:00
abstract::Pesticides, including organophosphate (OP), organochlorine (OC), and carbamate (CB) compounds, are widely used in agricultural and indoor purposes. OP and CB act as acetyl cholinesterase (AChE) inhibitors that affect lots of organs such as peripheral and central nervous systems, muscles, liver, pancreas, and brain, wh...
journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
doi:10.1177/0960327110388959
更新日期:2011-09-01 00:00:00
abstract::Exposure to quartz induces pulmonary inflammation and development of fibrosis. In order to study the fibrosing process, we investigated morphology, function and phenotype of alveolar (AMs) and interstitial (IMs) macrophages at an early stage of fibrosis in rats. Rats were exposed by intratracheal instillations of 10 m...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1191/096032700678816124
更新日期:2000-07-01 00:00:00
abstract::The color of the teeth is an important topic for many people and can be influenced by intrinsic and extrinsic stains. There is an increasing demand for whitening of the teeth year by year. The most popular way of whitening is "bleaching," which is the result of the breakdown of pigments located in the enamel and/or th...
journal_title:Human & experimental toxicology
pub_type: 临床试验,杂志文章
doi:10.1177/0960327118817103
更新日期:2019-04-01 00:00:00
abstract::In this study, we aimed to investigate disulfide/thiol homeostasis in trichloroethylene (TCE) exposure. The study was carried out in 30 nonsmoker TCE-exposed workers with a variety of occupations. Additionally, 30 healthy nonsmoker volunteers were recruited as the control group. TCE exposure was determined by measurin...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327115608928
更新日期:2016-09-01 00:00:00
abstract::The aim of the present study was to investigate whether cognitive behavioral impairment, induced by nicotine in offspring rats, was associated with the alteration of hippocampal short-term potentiation (STP) and long-term potentiation (LTP) and to discuss the potential underlying mechanism. Young adult offspring rats ...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327113494902
更新日期:2014-02-01 00:00:00
abstract::Sibutramine is an antiobesity drug that inhibits the reuptake of serotonin and noradrenalin in the hypothalamus. A 37-year-old Korean man presented to the emergency room for the oral intake of 280 mg of sibutramine. The patient was in thyrotoxic state. The (99m)Technetium-pertechnetate thyroid scan showed irregular up...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327112468907
更新日期:2013-08-01 00:00:00