This short manuscript will briefly present our current knowledge about CNS oxygen toxicity: the clinical manifestations, descriptions and incidence of symptoms, and the time – duration relationship that defines the safety limits and risk factors leading to enhanced toxicity to hyperbaric oxygen. A very general outline will present suggested mechanisms underlying hyperoxia-induced seizures and s...

OBJECTIVES In this study, the effect of tube length and outer diameter (OD) size of hydroxylated-multi walled carbon nanotubes (OH-MWCNTs) on their uptake and toxicity was investigated in the nematode Caenorhabditis elegans using a functional mutant analysis. METHODS The physicochemical properties of three different OH-MWCNTs were characterized. Uptake and toxicity were subsequently investiga...

Ochratoxin A (OTA) is a natural contaminant that has displayed nephrotoxicity and hepatotoxicity in mammals. It contaminates a great variety of foodstuffs and threatens people's lives. The molecular mechanism of OTA-induced toxicity has been studied since 1965. Moreover, epigenetic mechanisms are also studied in OTA-induced toxicity. Additionally, the mode of OTA epigenetic research has been ad...

While mining a data set of 554 chemicals in order to extract information on their toxicity value, we faced the problem of scaling all the data. There are numerous different approaches to this procedure, and in most cases the choice greatly influences the results. The aim of this paper is 2-fold. First, we propose a universal scaling procedure for acute toxicity in fish according to the Directiv...

Growing concern that phthalic acid esters (PAE) may present a health hazard and possible deleterious effects on the ecological system has led to increased interest in the more subtle toxicity of those compounds. Although the acute toxicity of PAEs as a group is quite low, the intrinsic cellular toxicity increases with molecular weight. Whether the intrinsic toxicity is great enough to exert a s...

Dietary vitamin E affects the susceptibility of mice and rats to ozone and nitrogen dioxide, suggesting a free radical mechanism of toxicity. Conventional peroxidation does not completely explain the effects of alterations of lung fatty acid composition on both nitrogen dioxide and ozone toxicity. A new scheme is proposed based on the cyclization of beta, gamma-allylic peroxyl free radicals to ...

Huntington's disease is a neurodegenerative disease caused by an expanded polyglutamine stretch within the huntingtin protein. Transfection of mutant huntingtin causes cell toxicity and depletion of CREB binding protein (CBP) or its recruitment into huntingtin aggregates. However, the role of CBP has been controversial and the relationship between polyglutamine-induced toxicity and CBP depletio...

the acute and sub-acute toxicity of safranal were studied in rat and mice within 2 and 21 days after exposure, respectively. for subacute toxicity, changes in weight as well as biochemical, hematological and pathological parameters were studied. the intraperitoneal ld50 values of safranal were 1.48 ml/kg in male mice, 1.88 ml/kg in female mice and 1.50 ml/kg in male rats. oral ld50 values were ...

OBJECTIVE Isolated limb perfusion combined with melphalan is an accepted treatment for obtaining locoregional control in advanced melanoma of the extremities and other malignant neoplasias restricted to the limb. This study aims to examine the factors associated with toxicity caused by the regional method. We considered the technical aspects of severe complications associated with the procedure...