نتایج جستجو برای: acute exposure
تعداد نتایج: 781872 فیلتر نتایج به سال:
occupational inhalation exposure to noxious agents is not uncommon. herein, we present a 26-year-old male student who had accidental acute inhalation exposure to a large quantity of titanium ethanolate and hydrogen chloride in chemistry lab. he was referred to the emergency department of our hospital with low-grade fever, dyspnea, headache, fatigue and myalgia. after 24 hrs of symptomatic treat...
Background: Periodic epidemiological studies are necessary to understand the pattern of poisoning in each region. This study was designed to evaluate the pattern of acute poisoning cases treated in a tertiary care hospital in Navi Mumbai, India. Methods: This cross sectional study was conducted at Dr. D. Y. Patil Medical College, Hospital and Research Centre during July 2012 to July 2013. All c...
Background: Evaluation of herbicide pollution in aquatic environments needs the great concern and the most important echo-pollutant effects of herbicides are related to their effects on non target aquatic organisms. Native fish can serve as a proper bio-indicator for evaluation of pollution on aquatic ecosystems. OBJECTIVES: To find environmentally friendly herbicides, in this study the acute ...
Background & Objectives: Recent evidence suggests that long-term exposure to air pollution contributes to progression of atherosclerosis and the risk of cardiac morbidity and mortality short-term exposure may also lead to thrombosis and acute ischemic events. To evaluate the relation between the levels of major air pollutants (CO and PM10) and hospital admission for acute coronary syndrome (ACS...
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 ...
BACKGROUND Previous studies have not found a consistent association between exposure to domestic cooking using gas appliances and exacerbation of asthma. We investigated the immediate airflow response to acute exposure from single episodes of gas cooking, and peak airflow variability from continued exposure to repeated episodes of gas cooking in a group of non-smoking asthmatic women. METHODS...
Background: Carbon monoxide (CO) poisoning may lead to hypoxic/anoxic injury and eventually ischemic encephalopathy. Magnetic resonance imaging (MRI) has a well-recognized role in assessment of the severity of brain damage caused by CO poisoning. In this study, we aimed to present and analyze the structural abnormalities in the brain MRI and especially in diffusion weighted MRI (DWI) images in ...
The volume of nanoparticles (NPs) used in various sectors human life is steadily increasing. Due to their unique properties, silicon dioxide (SiO2 NPs) are widely industrial production. However, ecotoxicological effect on marine biota extremely poorly understood. To highlight this problem, experiments were conducted with short-term SiO2 NPs exposure the sand dollar Scaphechinus mirabilis sperm,...
The purpose of this study was to examine the effect of acute (24 h) and chronic (5 wk) hypobaric hypoxic exposure equivalent to a simulated altitude of 4,300 m (446 mmHg) on the enzymes of fat metabolism. Heart, liver, and skeletal muscle were taken from 32 male Sprague-Dawley rats. Altitude exposure did not affect the activity of citrate synthase in any of the tissues, suggesting that mitochon...
Background: Prolonged inhibition of acetylcholine esterase may lead to the intermediate syndrome. Neuromuscular junction (NMJ) dysfunction has been shown with repetitive nerve stimulation (RNS). Subclinical NMJ dysfunction may also occur. We aimed to examine the NMJ function following acute organophosphorus (OP) poisoning by using exercise modified slow RNS. Methods: A cohort study was conducte...
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