Acute exposure to hydrogen sulfide initiates a series of hallmark biological effects that occur progressively at increasing levels: odor perception, conjunctivitis, olfactory paralysis, “k...

purpose :   despite numerous studies which have been done regarding soccer injuries worldwide, there is lack of available data considering the epidemiology of injuries in the iranian soccer premier league , although it is the most popular sport in the country. t he main goal of this research was to determine the incidence of physical injuries in the studied population, considering other charact...

Background: Vinyl acetate monomer is a commodity chemical widely used in the manufacturing of various products. The chemical is hazardous and exposure to it may occur in both occupational and non-occupational settings. The aim of this study was to characterize the effects of short-term exposure to Vinyl Acetate Monomer (VAM) vapour on the liver and lungs of Wistar rats. Methods: Mice weighing ...

Airway dendritic cells (DCs) play a key role in smoke-related lung diseases; however, the acute effects of tobacco smoke on human airway DCs in vivo are unknown. A total of 16 smokers underwent bronchoalveolar lavage at two time-points: directly after a 4-h period of nonsmoking (no smoke exposure); and directly after a 4-h period during which eight cigarettes were smoked (acute smoke exposure)....

AIMS To investigate whether the risk of acute leukaemia among adults is associated with occupational exposure to electromagnetic fields. METHODS Probable occupational exposure to electromagnetic fields at higher than typical residential levels was investigated among 764 patients diagnosed with acute leukaemia during 1991-96 and 1510 sex and age matched controls. A job exposure matrix was appl...

objective(s):therapies with high levels of oxygen are commonly used in the management of critical care. however, prolonged exposure to hyperoxia can cause acute lung injury. although oxidative stress and inflammation are purported to play an important role in the pathogenesis of acute lung injury, the exact mechanisms are still less known in the hyperoxic acute lung injury (hali).   materials a...

background: brain is the most important organ as it controls and co- ordinates all the activities of our body. reports on neuroethological investigations in mice particularly associated with learning and memory after radiation exposure are very scanty. hence, present investigation is an attempt to examine the effects of low dose tritiated water (hto) acute exposure on adult swiss albino mice in...

Acute exposure to high doses of toluene can generate respiratory depression. However, neurotoxic mechanism of its action in the brainstem is not completely clear. In this work, acute, but not subchronic, exposure of rats to toluene increased leu-enkephalin immunostaining in several myelencephalic nuclei implicated in cardiorespiratory control. Due to the physiological role of enkephalins in the...

Acute toxicity is manifested in terms of effects which occur after a single administration or relatively brief exposure to substance mixture. The evidence for acute usually obtained from animal testing so characterised lethality and times used experimental protocols. Mainly two hazardous classes are reported that known as “Acute toxicity” “STOT-SE (Specific Target Organ Toxicity-Single Exposure...

We previously demonstrated that acute inhibition of voltage-gated calcium channels (VGCCs) is a common mode of action for (sub)micromolar concentrations of chemicals, including insecticides. However, because human exposure to chemicals is usually chronic and repeated, we investigated if selected insecticides from different chemical classes (organochlorines, organophosphates, pyrethroids, carbam...