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Query: KEGG:D02052 (Barium sulfate)
 55 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A study is described in which six metallic compounds identified in a previous pilot experiment were tested as pulp-capping agents using the exposed rat molar. Barium sulfate, calcium carbonate, cupric oxide, ferric oxide, and heavy magnesium oxide gave poor results. Stannic oxide gave more favorable results and is being studied further.
Oral Surg Oral Med Oral Pathol 1979 Dec
PMID:Simple metallic compounds as pulp-capping agents. 29 61

Barium sulfate-contrast medium was instilled into the peritoneal cavity of three rats and three dogs and thus a (aseptic) barium peritonitis was induced. The experiments show that barium sulfate here causes not only local reaction but important is its general deleterious effect dependent on its quantity. This is not widely appreciated, yet seems to be an intoxication. Barium sulfate-medium only may be considered non toxic as long as staying in the intestinal tract.
Chirurg 1986 Dec
PMID:[Barium peritonitis in animal experiments (rat, dog)]. 381 89

A fatal poisoning after oral administration of barium sulfate for contrast radiography is reported. Barium sulfate is an insoluble salt and therefore is almost nontoxic. The case described here involves a 61-year-old woman who underwent two CT scans of the digestive tract with oral administration of barium sulfate during a surgical procedure. Within several hours after the first barium swallow examination the patient presented nonspecific neurologic and cardiovascular manifestations that rapidly progressed and led to death a few days later. Laboratory findings demonstrated elevated levels of barium in the blood and cerebrospinal fluid. The most likely mechanism of poisoning was progressive intravasation of barium due to stasis of contrast material related to intestinal obstruction.
Forensic Sci Int 1999 Dec 06
PMID:Fatal poisoning due to intravasation after oral administration of barium sulfate for contrast radiography. 1066 97

Barium sulfate (barite) scale poses significant challenges for processes ranging from water treatment to fossil fuel production. Here, we identify alginate (a polysaccharide derived from brown algae) as a potent, "green" alternative to commercial barite demineralizing agents. Unlike conventional treatments of inorganic scales that require caustic conditions, alginate polymers dissolve barite at near-neutral conditions. In this study, we benchmark the demineralizing efficacy of alginate against a commercial dissolver, diethylenetriaminepentaacetic acid (DTPA), using a combination of bulk dissolution assays, scanning probe microscopy, and molecular dynamics simulations. Time-resolved rates of dissolution measured in a microfluidic device show that demineralization is enhanced more than an order of magnitude under flow. In situ atomic force microscopy reveals that alginate and DTPA exhibit distinct mechanisms of surface dissolution; and surprisingly, their binary combination in alkaline media results in a synergistic cooperativity that enhances the overall rate of barite dissolution. These studies collectively demonstrate a unique approach to demineralization using an inexpensive and abundant biopolymer that enables environmentally friendly treatment of inorganic scales.
ACS Appl Mater Interfaces 2020 Dec 09
PMID:Acidic Polysaccharides as Green Alternatives for Barite Scale Dissolution. 3323 79