Relatively little is known about how metals such as iron are effluxed from cells, a necessary step for transport from the root to the shoot. Ferroportin (FPN) is the sole iron efflux transporter identified to date in animals, and there are two closely related orthologs in Arabidopsis thaliana, IRON REGULATED1 (IREG1/FPN1) and IREG2/FPN2. FPN1 localizes to the plasma membrane and is expressed in...

This study on the removal of cobalt ions from aqueous solutions by red mud was conducted in batch condition. Its objective was to investigate the possibility of using red mud waste material as an alternative to high cost commercial adsorbent materials for the removal of cobalt from aqueous solution. In this study, batch experiments were carried out for the adsorption of cobalt onto red mud indu...

AIMS To investigate whether exposure to cobalt in cobalt plants has any measurable effect on the cardiovascular system. METHODS Occupational, cross sectional study, using a self administered questionnaire, blood pressure measurement, electrocardiography, and laboratory tests in which 203 male workers with at least one year of exposure to cobalt and 94 unexposed controls participated. Echocard...

16 Recent reports from Australia suggest that cobalt chloride is being used in racehorses 17 competing in New South Wales and Victoria. Although these are the first such reports, it is 18 suspected that cobalt chloride may have been used illegally for some time. Cobalt chloride is 19 a well-established hypoxia mimetic that is used experimentally to stabilise hypoxia-inducible 20 factor 1  (HIF...

The preparation of polystyrene-coated cobalt oxide nanowires is reported via the colloidal polymerization of polymer-coated ferromagnetic cobalt nanoparticles (PS-CoNPs). Using a combination of dipolar nanoparticle assembly and a solution oxidation of preorganized metallic colloids, interconnected nanoparticles of cobalt oxide spanning micrometers in length were prepared. The colloidal polymeri...

We determined serum cobalt levels in 55 patients by atomic absorption spectrophotometry before and after implantation of uncemented total hip arthroplasties. In a randomised, prospective trial 27 wrought Co-28Cr-6Mo-0.2C metal-on-metal articulations were compared with 28 ceramic-on-polyethylene hips which did not contain cobalt. Other sources of iatrogenic cobalt loading were excluded. The meta...

The distribution and adverse effects, especially to optic and acoustic nerves, of cobalt released from a hip arthroplasty and its association with albumin were studied. The analysis of cobalt was performed in plasma, whole blood, urine, and cerebrospinal fluid by inductively coupled plasma mass spectrometry (ICP-MS). The fraction of albumin binding the metal was determined by colorimetric assay...

Two separate experiments were conducted with sheep‘ grazing Pangola grass pastures. In the first experiment, eight groups of pregnant ewes (six ewes/group) were used. Each group received one of the following supplements, no supplement (control), phosphorus, sodium, iodine, cobalt, mineral mixture, sorghum grain and sorghum grain plus urea. Ewes supplemented with cobalt lost less weight during l...

Long titanium aneurysm clips have recently been released. In the present study, comparative study of long titanium and cobalt alloy clips was performed. Two kinds of Sugita long clips (straight clips of 25- and 35-mm blade length) made of titanium and cobalt alloys were tested by measuring the closing force, the anti-scissoring torque, and the maximum opening width. There were some differences ...

Reaction of pyridinobromocobalt(llI) aetioporphyrin I with a variety of alkyland aryl-magnesium bromides gives the corresponding alkyland aryl-cobalt(lIl) derivatives. In an alternative synthesis, the cobalt(l) derivative of aetioporphyrin J reacts with alkyl or acyl halides to give the alkylor acyl-cobalt(llI) compounds. The latter approach has also been used for the preparation of hydroxyalky...