Results 271 to 280 of about 229,787 (310)

Manganese in Melanin

Nature, 1964
AQUEOUS systems were reported earlier in which a manganese-phenothiazine auto-oxidation led to the emergence of semiquinone free-radicals of the drugs1. The mildness of the required conditions permitted the postulation that this interaction might be relevant to the pharmacological action of these agents2.
G C, COTZIAS, P S, PAPAVASILIOU, S T, MILLER   +2 more
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Manganese and radioactive manganese in liver cell nuclei

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects, 1964
Abstract The turnover of manganese in cell nuclei of rat liver has been investigated using 54 Mn as radiotracer in conjunction with chemical determination of Mn contents. The mean Mn concentrations of nuclei and of liver were 12.4 and 10.9 μg per g dry wt., respectively.
I G, GILBERT, J M, RADLEY
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Manganese Intoxication

Archives of Neurology, 2000
Manganese plays an important role as a cofactor in many enzymatic reactions in humans but in excess amounts can cause irreversible nervous system damage. Although manganism is a rare condition, it can be the cause of complex nervous system symptoms, especially in the setting of environmental exposure.
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Manganese and the Brain

2013
Manganese (Mn) is an essential trace metal that is pivotal for normal cell function and metabolism. Its homeostasis is tightly regulated; however, the mechanisms of Mn homeostasis are poorly characterized. While a number of proteins such as the divalent metal transporter 1, the transferrin/transferrin receptor complex, the ZIP family metal transporters
Karin, Tuschl, Philippa B, Mills, Peter T, Clayton   +2 more
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Reduced Manganese Moment in Manganese Chromite

Journal of Applied Physics, 1966
The net magnetization, magnetic susceptibility, 55Mn nuclear magnetic resonance, and neutron-diffraction properties of MnCr2O4 have been reinvestigated. Our results are in general agreement with earlier findings. The neutron-diffraction pattern of MnCr2O4 evidences appreciable deviation from a pure spiral configuration.
K. Dwight, N. Menyuk, J. Feinleib, A. Wold   +3 more
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Fluoride and Manganese

Abstract Children can be exposed to many hazardous metals in the environment, including fluoride and manganese. Sources of exposure may include drinking water, foods and dietary supplements, and metal-containing particles released into the air from industrial and vehicular sources.
Diaz Y. F., Azmoun S., Lucchini R. G.
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Reduction of Colloidal Manganese Dioxide by Manganese(II)

Journal of Colloid and Interface Science, 2002
The reduction of colloidal MnO(2) by Mn(2+) in aqueous HClO(4) has been studied by a spectrophotometric method. The reaction product is Mn(III). The reaction is of first order in both colloidal MnO(2) and H(+), whereas it presents a fractional order (0.58+/-0.02) in Mn(2+).
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Managing the manganese: molecular mechanisms of manganese transport and homeostasis

New Phytologist, 2005
SummaryManganese (Mn) is an essential metal nutrient for plants. Recently, some of the genes responsible for transition metal transport in plants have been identified; however, only relatively recently have Mn2+ transport pathways begun to be identified at the molecular level. These include transporters responsible for Mn accumulation into the cell and
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Effects of high dietary manganese as manganese oxide or manganese carbonate in sheep.

Journal of animal science, 1985
Twenty-four crossbred Florida native wether lambs, 28 kg initially, were assigned randomly to a basal diet (31 ppm Mn dry matter basis) supplemented with either 0, 500, 1,000, 2,000 or 4,000 ppm Mn from feed grade MnO or 2,000, 4,000 or 8,000 ppm Mn from reagent grade MnCO3. There were three sheep/treatment, with ad libitum access to feed and tap water.
J R, Black, C B, Ammerman, P R, Henry
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Manganese

2005
C.L. Keen, J.L. Ensunsa, B. Lönnerdal, S. Zidenberg-Cherr   +3 more
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