Effects of static magnetic field on dissolved oxygen levels in aqueous solutions containing copper(II), iron(II), and heme iron(III) complexes

Yasui, Hiroyuki; Kunitomi, Keisuke; Kamatari, Masayuki; Kaneko, Noritsugu; Nakayama, Akihiro

doi:10.1016/s0928-4680(00)00034-1

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…GFAP expression seems to be derived from astrocytes contaminated in hippocampal neuronal preparations cultured even in the absence of FBS. Static magnetic fields increase the level of dissolved oxygen in aqueous solutions containing copper (II), iron (II), and heme iron (III) complexes (Sakurai et al, 2000), and inhibit the growth of particular bacteria under anaerobic conditions without affecting that under aerobic conditions (Kohno et al, 2000). The finding that GFAP and PCNA expression was not changed in hippocampal astrocytes cultured in medium conditioned previously with hippocampal neurons that had been cultured under sustained magnetism do not support the idea that sustained magnetism facilitates release of an endogenous substance from cultured neurons that is trophic to cultured astrocytes.…”

Section: Discussionmentioning

confidence: 99%

Functional alterations in immature cultured rat hippocampal neurons after sustained exposure to static magnetic fields

Hanabusa

Yoneda

2003

J of Neuroscience Research

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In cultured rat hippocampal neurons, gradual increases were seen in the expression of microtubule-associated protein-2 (MAP-2), neuronal nuclei (NeuN) and growth-associated protein-43 (GAP-43), in proportion to increased duration, up to 9 days in vitro (DIV). Sustained exposure to static magnetic fields at 100 mT for up to 9 DIV significantly decreased expression of MAP-2 and NeuN in cultured rat hippocampal neurons without markedly affecting GAP-43 expression. Although a significant increase was seen in the expression of glial fibrillary acidic protein (GFAP) in hippocampal neuronal preparations cultured for 6-9 DIV under sustained magnetism, GFAP and proliferating cell nuclear antigen expression were not affected markedly in cultured astrocytes prepared from rat hippocampus and neocortex, irrespective of cellular maturity. No significant alteration was seen in cell survivability of hippocampal neurons or astrocytes cultured under sustained magnetism. In hippocampal neurons cultured for 3 DIV under sustained magnetism, marked mRNA expression was seen for N-methyl-D-aspartate (NMDA) receptor subunits, NR1, NR2A-2C, NR2D, and NR3A. In addition, significant potentiation of the ability of NMDA to increase intracellular free Ca(2+) ions was observed. Differential display analysis revealed a significant decrease in mRNA expression for the transcription factor ALF1 in response to sustained magnetism for 3 DIV. These results suggest that sustained exposure to static magnetic fields may affect cellular functionality and maturity in immature cultured rat hippocampal neurons through modulation of expression of particular NMDA receptor subunits.

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Section: Discussionmentioning

confidence: 99%

Functional alterations in immature cultured rat hippocampal neurons after sustained exposure to static magnetic fields

Hanabusa

Yoneda

2003

J of Neuroscience Research

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“…Expression of GAP-43 is associated with the neuronal development, axonal regeneration, synaptogenesis and plasticity in immature neurons but not seen in mature neurons (39). By contrast, static magnetic fields are shown to increase the level of dissolved oxygen in aqueous solutions containing copper (II), iron (II) and heme iron (III) complexes (40), and inhibit the growth of particular bacteria under anaerobic conditions without affecting that under aerobic conditions (41). Nevertheless, it should be emphasized that expression of mRNA and immunoreactive protein is not always followed by alterations of different functions including recognition of particular core nucleotide sequence.…”

Section:   24mentioning

confidence: 98%

Modulation by static magnetism of neuronal activity

et al. 2004

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In neurons, the signal propagation involves both the conduction mediated by local electric currents through voltage-sensitive cation channels in axons and the transmission mediated by the exocytotic release of neurotransmitters from nerve endings into synaptic clefts. A great number of desperate efforts have been dedicated to biochemical, pharmacological and molecular biological studies on the elucidation of mechanisms underlying the neurotransmission at synapses, while relatively little attentionhas been paid to the comprehensive evaluation of the conduction except for local anesthetics. According to a physical theorem, exposure to magnetism should lead to the generation of a certain mechanical force in neurons with concomitant electric currents in a particular situation. In particular, repetitive transcranial magnetic stimulation is beneficial for the treatment of selected patients suffering from depression, bipolar affective disorder and schizophrenia as a possible alternative to the electroconvulsive therapy for refractory depression. In this review, therefore, we will summarize our recent advances made on the neurochemical and molecular biological elucidation in cultured rat hippocampal neurons toward better understanding by the readers of different disciplines of mechanisms associated with the modulation by magnetism of the neuronal activity in the brain.     

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“…It is therefore an urgent need to improve the current reverse osmosis method and develop a novel desalination technology. Magnetic fields have been successfully used to suppress water-scale deposition and reduce the amount of scale formed [5,6], decrease the corrosion rate [7,8], inhibit the growth of bacteria [9,10], increase the dissolved oxygen levels [11,12], etc. Considering the advantages of magnetic field in water treatment, we developed a novel desalination method based on rotating electromagnetic effect.…”

Section: Introductionmentioning

confidence: 99%

Influence of Magnetic Field on Aqueous NaCl Solutions: A Foundational Research on the Desalination Method Based on the Rotating Electromagnetic Effect

Han

Guo

Chai

2012

AMR

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In order to investigate whether magnetic field can improve the seawater desalination efficiency, the influence of magnetic field on the aqueous solutions of NaCl is studied by molecular dynamics (MD) simulations. The results show that, under the influence of magnetic field, the hydration number of Cl- ions increases and the mobility of hydrated Cl- ions is weakened, while the mean size of water clusters decreases and the mobility of water molecules is enhanced. These may lead to higher salt rejection and water flux by the usage of magnetic field in our novel desalination method based on rotating electromagnetic effect.

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Effects of static magnetic field on dissolved oxygen levels in aqueous solutions containing copper(II), iron(II), and heme iron(III) complexes

Cited by 8 publications

References 10 publications

Functional alterations in immature cultured rat hippocampal neurons after sustained exposure to static magnetic fields

Functional alterations in immature cultured rat hippocampal neurons after sustained exposure to static magnetic fields

Modulation by static magnetism of neuronal activity

Influence of Magnetic Field on Aqueous NaCl Solutions: A Foundational Research on the Desalination Method Based on the Rotating Electromagnetic Effect

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