نتایج جستجو برای: elimination of toxic mercury ion
تعداد نتایج: 21197212 فیلتر نتایج به سال:
Background: The clinical manifestations of mercury poisoning vary based on chemical form, dose, and route of administration. In the medical field, many of the cases of mercury exposure have been in mining agriculture, or chemical industrial workers via inhalation. Aim: To discuss the diagnosis of parenteral mercury poisoning with radiographic identification and potential sequelae. Case Presenta...
The stability of the mercury ion mediated dU-HgII-dU pair depends on substituents introduced at the 5-position of the pyrimidine moiety. To this end, a series of oligonucleotides were synthesized with dU modification in central position. Common and new phosphoramidites were utilized. Hybridization experiments provided 12-mer duplexes with non-canonical "dU-dU" pairs. In most cases Hg2+ stabiliz...
Background: Although it is one of the most toxic nonradioactive elements, mercury is widely used in dental amalgam. Mercury is a toxic element which can damage various organs such as central nervous system, renal, respiratory and hematologic systems. The adverse health impacts associated to exposure to some common sources of electromagnetic fields including laptop computers, mobile phones, ...
Acute or chronic mercury exposure can cause adverse effects during any period of development. Mercury is a highly toxic element; there is no known safe level of exposure. Ideally, neither children nor adults should have any mercury in their bodies because it provides no physiological benefit. Prenatal and postnatal mercury exposures occur frequently in many different ways. Pediatricians, nurses...
Mercury at low concentrations represents a major hazard to microorganisms. Inorganic mercury has been reported to produce harmful effects at 5 microg/l in a culture medium. Organomercury compounds can exert the same effect at concentrations 10 times lower than this. The organic forms of mercury are generally more toxic to aquatic organisms and birds than the inorganic forms. Aquatic plants are ...
The variations in size and spatial and temporal variations in concentrations of toxic metals (cadmium, mercury, and lead) in oyster tissues were studied. Samples were collected at monthly intervals over a 1-year period from three locations along the southern coast of Oman (Mirbat, Hadbeen, and Sadah). Cadmium and lead were analyzed using an inductively coupled plasma atomic emission spectromete...
The actions of retinoic acids (RA) are mediated by their cognate nuclear receptors--ligand inducible transcription factors (retinoic acid receptors (RAR)). Possible interactions of toxic heavy metals on the RAR system are of interest due to involvement of the RAR system in multiple systemic processes. We assayed cadmium chloride and mercury chloride for their influence on the RAR system in rat ...
H eavy metals, such as cadmium, copper, mercury, and arsenic, are ubiquitous components of the Earth’s crust. Most of these metals are toxic to varying degrees, and life has accordingly evolved ways to deal with them: either by developing mechanisms to detoxify them, or using them for biological functions. As humans began unearthing metals to be turned into consumer products, large amounts of h...
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