The object of this study was to compare organ dose and image quality effects of using bismuth and barium vinyl in-plane shields with standard and low tube current thoracic CT protocols. A RANDO phantom was scanned using a 64-slice CT scanner and three different thoracic protocols. Thermoluminescent dosemeters were positioned in six locations to record surface and absorbed breast and lung doses....

The participation of renal metallothionein (Ml) in the toxicity and antitumor activity of cii-diamminedichloroplatinum(II) (cw-DDP) in male mice was examined. Preinduction of MT in the kidney by the s.c. administration of bismuth compounds decreased the lethality and renal and gastrointestinal toxicity caused by a single s.c. injection of c/j-DDP. In the present study a correlation between the ...

in a bacteriological study on 230 biopsies of patients suffering gastrointestinal disorders in imam khomeyni hospital, 88 patients were selected as case and another 88 as control groups. case group was treated by triple (bismuth subcitrate, metronidazole and tetracycline) drugs for a period of 14 days. the latter treated by nonbismuth regiment eg. amoxicillin and ranitidine mainly. all of the p...

The corrugated layer structure bismuth has been successfully tailored into negative thermal expansion along c axis by size effect. Pair distribution function and extended X-ray absorption fine structure are combined to reveal the local structural distortion for nanosized bismuth. The comprehensive method to identify the local structure of nanomaterials can benefit the regulating and controlling...

We present a case of acute esophageal necrosis (AEN) likely caused by chronic use of bismuth subsalicylate, an active ingredient in over-the-counter Pepto-Bismol(®), which contains 220 g of salicylic acid in each 30 mL quantity. While aspirin is known to cause gastritis and gastric ulcers, this is the first case, to our knowledge, reporting AEN after chronic bismuth subsalicylate use.

The allylation of acetals using allyltrimethylsilane is efficiently catalyzed by bismuth triflate (1.0 mol%). The reaction proceeds smoothly at room temperature to afford the corresponding homoallyl ether in good yield. The mild reaction conditions, the low toxicity of bismuth salts, and the high catalytic efficiency of the system make this procedure particularly attractive for large-scale synt...

Each tablet of Bistrimate contains 410 mg. of sodium bismuth triglycollamate equivalent to 75 mg. of metallic bismuth. It occurs as a white powder which dissolves readily in water to give a solution which is approximately neutral in reaction. It is adequately absorbed from the gastrointestinal tract with relatively little local irritation and is rapidly and completely excreted in the urine (2, 3).

A convenient synthesis of different types of α-amino phosphonates via one-pot solvent-free three component reactions of aldehydes, amines and phosphites catalyzed by bismuth salts has been investigated. Bismuth triflate is found to be the most effective catalyst for this reaction.

BACKGROUND Traditional standard triple therapy for Helicobacter pylori (H. pylori) infection (proton pump inhibitor-clarithromycin-amoxicillin) can easily be converted to non-bismuth quadruple (concomitant) therapy by the addition of a nitroimidazole twice daily. AIM To critically review evidence on the role of non-bismuth quadruple therapy (proton pump inhibitor-clarithromycin-amoxicillin-ni...

Bismuth (Bi(3+)) binds equal molar amounts of HypB from Helicobacter pylori at the conserved metal site with a dissociation constant of 0.94 (±0.25) × 10(-17) μM, and concomitantly induces the protein dimerization similarly to Ni(2+). Excess Bi(3+) causes HypB further oligomerization, leading to HypB GTPase dysfunction. The results extend our understanding on the inhibitory mechanism of bismuth...