Rat glioma cells were labeled using electroporation with either manganese oxide (MnO) or superparamagnetic iron oxide (SPIO) nanoparticles. The viability and proliferation of SPIO-labeled cells (1.9 mg Fe/ml) or cells electroporated with a low dose of MnO (100 microg Mn/ml) was not significantly different from unlabeled cells; a higher MnO dose (785 microg Mn/ml) was found to be toxic. The cell...

background & aims of the study: leachate production is a major problem for solid waste landfills and causes important threat to health public and environment. one of the typical properties of heavy metals is that they cannot easily decompose in the environment. the aim of this study was to measure of heavy metals concentrations in old-age leachate from qazvin landfill site, iran. materials & me...

Bleeding after total knee arthroplasty can result in significant morbidity and increases the need for blood transfusion. The proper use of intraoperative adjunctive topical hemostatic agents can enhance hemostasis perioperatively, potentially reducing blood transfusions. In this prospective study, 157 consecutive patients undergoing primary total knee arthroplasty received FLOSEAL (FLOSEAL Hemo...

Objective. To investigate the systemic and ocular factors that affect response to intensive aflibercept treatment in diabetic macular edema (DME) a real-world setting. Methods. This retrospective cohort study evaluated 30 eyes of 23 patients with DME who underwent intravitreal injections (five monthly loading doses). Treatment was assessed by central retinal thickness (CRT) best-corrected visua...

A presença de espécies metálicas na água de coco, provenientes de diferentes estados brasileiros, foi investigada. A técnica de ICP OES foi utilizada para determinar Ca, Mg, Mn, Fe, Zn e Cu, sem mineralização da matriz. Utilizando parâmetros instrumentais otimizados as determinações apresentaram RSD geralmente menor que 2% e boa exatidão. Os valores de LOD (mg L) foram: Ca 0,06, Mg 0,004, Mn 0,...

We report x-ray photoelectron spectroscopy XPS study of Na and K adlayers on icosahedral Al70.5Pd21Mn8.5 i-Al-Pd-Mn quasicrystal. The Na 1s core-level exhibits a continuous linear shift of 0.8 eV towards lower binding energies BE with increasing coverage up to one monolayer ML saturation coverage. In the case of K/ i-Al-Pd-Mn, a similar linear shift in the K 2p spectra towards lower BE is obser...

Three experiments wereconducted to evaluate chemical characteristics, intestinal absorption and bioavailability of manganese(Mn)from organic, inorganic and nano sources of Mn. In experiment 1, inorganic sources of Mn including Mn-sulphate and Mn-oxide, organic sources of Mn as Mn-glycinate and Mn-bioplex and FRA® easy dry Mn as a nano source of Mn were subjected to elemental analysis and solubi...

Excess manganese (Mn) is neurotoxic. Increased manganese stores in the brain are associated with a number of behavioral problems, including motor dysfunction, memory loss and psychiatric disorders. We previously showed that the transport and neurotoxicity of manganese after intranasal instillation of the metal are altered in Hfe-deficient mice, a mouse model of the iron overload disorder heredi...

The content-dependent activity of surfactant protein (SP)-B was studied in mixtures with dipalmitoyl phosphatidylcholine (DPPC), synthetic lipids (SL), and purified phospholipids (PPL) from calf lung surfactant extract (CLSE). At fixed SP-B content, adsorption and dynamic surface tension lowering were ordered as PPL/SP-B approximately SL/SP-B > DPPC/SP-B. All mixtures were similar in having inc...

to study the effect of nitrogen form and ph of nutrient solution on the uptake and concentration of fe, zn, cu and mn in roots and shoots of spinach plant, a factorial experiment was conducted with two factors including nutrient solution ph in three levels (4.5, 6.5 and 8.0) and nitrate to ammonium ratio of nutrient solution in five levels (100:0, 75:25, 50:50, 25:75 and 0:100). the experiment ...