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Clinical And Evolutive Characteristics in Acute Toxic Methemoglobinemia in Children

  Abstract Introduction: Acquired or toxic methemoglobinemia is the result of exposure by swallowing, inhalation or dermal absorbtion of medicines or non-drug chemicals with oxidizing properties. The main objectives of the study were to highlight the main causes of methemoglobinemia in children, to identify the associated factors and their influence on the clinical form of the disease as well as the response to antidote treatment with methylene blue. Methods: All patients with acute toxic methemoglobinemia hospitalized over a period of six years were included in the study, the inclusion criteria being: age < 18 years, suggestive symptomatology (generalized cyanosis, asthenia, dyspnea) and methemoglobin values >3%. Results: 82 patients with acute toxic methemoglobinemia were identified of which the majority (94%) were between 0-5 years. 69 cases were secondary to exposure to nitrates from water used to prepare food. The severity of methemoglobinemia was ...
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Further Studies in Translatable Model Systems are Needed to Predict the Impacts of Human Microplastic Exposure

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Open Access Journal of Toxicology Abstract Microplastics are a pervasive environmental contaminant that have been found in many media including water sources, soils, and foodstuff. Due to the worldwide presence and persistence of microplastic debris, human exposure is inevitable. Human exposure occurs predominantly through ingestion, although dermal and inhalation exposures are probable. Microplastic single exposure studies in aquatic species and fish have shown various toxic effects including those on reproduction and survival. In addition to potential intrinsic toxicity, microplastics often have chemicals adsorbed to their surfaces. Studies report that these chemicals can have innate toxicity that is modulated by the composition of microplastics. Both the impacts of microplastics alone and co-exposures with adsorbed chemicals exhibit size dependent effects. Analysis of the current literature has revealed published studies predominantly investigate the toxicity of micropl...
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