The excretion of sulphate by the isolated Malpighian tubules of Calliphora vomitoria has been investigated. Contrary to expectation, it was found that the isolated tubules are freely permeable to sulphate. The rate of sulphate secretion is comparable to the rates of secretion of both phosphate and chloride. The excretion of sulphate by the intact fly has also been verified.

Five moderately thermophilic iron-oxidizing bacteria, including representative strains of the three classified species (Sulfobacillus thermosulfidooxidans, Sulfobacillus acidophilus, and Acidimicrobium ferrooxidans), were shown to be capable of reducing ferric iron to ferrous iron when they were grown under oxygen limitation conditions. Iron reduction was most readily observed when the isolates...

Standard parenteral iron preparations such as ferric sucrose and ferric gluconate are considered to be degraded in the reticuloendothelial cells. The iron is subsequently incorporated into transferrin. It was also reported that these iron preparations donate iron directly to plasma transferrin. Hepatocytes seemed unaffected. We show that this picture is incorrect. To obtain quantitative data, i...

Background This retrospective study was performed to determine whether postoperative intravenous ferric carboxymaltose reduces transfusion amounts without influencing clinical outcomes in patients that have undergone hip surgery. Methods Between May 2014 and April 2016, the authors adopted a new perioperative blood management protocol involving the administration of intravenous ferric carboxy...

Pseudomonas fluorescens cultures produce fluorescent siderophores. By utilizing optimal conditions for maximizing siderophore production in shake flask cultures of P. fluorescens, we report successful characterization of the culture broth supernatant as a robust ferric ions biosensor. For characterizing the ferric ions biosensor, we tested the effects of pH, buffers, different ferric salts and ...

INTRODUCTION AND OBJECTIVES Treatment with ferric carboxymaltose improves symptoms, functional capacity, and quality of life in patients with chronic heart failure and iron deficiency. The aim of this study was to assess the cost-effectiveness of ferric carboxymaltose treatment vs no treatment in these patients. METHODS We used an economic model based on the Spanish National Health System, wi...

The effect of iron on the attachment of gonococci to human spermatozoa was investigated using the three iron salts, ferric chloride, ferric nitrate, and ammonium ferric citrate (AFC). Ferric chloride and ferric nitrate were found to be unsuitable for such studies because they were insoluble at physiological pH values, produced a marked decrease in the pH of unbuffered medium (Ringer's solution)...

Crystal structures of FbpA, the periplasmic ferric ion-binding protein of an iron-uptake ABC transporter, from Thermus thermophilus HB8 (TtFbpA) have been solved in apo and ferric ion-bound forms at 1.8 and 1.7 Å resolution, respectively. The latter crystal structure shows that the bound ferric ion forms a novel six-coordinated complex with three tyrosine side chains, two bicarbonates and a wat...

A method of measuring amorphous ferric phosphate in the presence of crystalline ferric phosphate is described. This procedure is important because there appears to be a big difference in availability between the amorphous and crystalline forms of ferric phosphate. This difference has been proven for two situations. In the first situation, when amorphous ferric phosphate is used as the source of...