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Magnetic Force Microscopy of the Ethmoid Bones of Migratory and Non-Migratory Fishes

100%
Gorobets S., Gorobets O., Bulaievska M., Sharau I.
Acta Physica Polonica A
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2018
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vol. 133
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issue 3
734-737
EN
For a long time it was believed that the biogenic magnetic nanoparticles (BMNs) in the ethmoid bones of fishes and birds are associated with navigation in the geomagnetic field. However, it was proven that BMNs don't affect the ability of migratory birds to orient in the Earth's magnetic field. It is relevant to check the presence of BMNs in organs of migratory and non-migratory fishes. The presence of BMNs was investigated in the samples of ethmoid bones of atlantic salmon, northern pike and silver carp by the method of magnetic force microscopy. As a result, the biological material of ethmoid bones of migratory and non-migratory fishes contain both separate BMNs and their chains, so BMNs in the ethmoid bone of fishes are not related to their ability to migrate in the geomagnetic field.
2
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Detection of Biogenic Magnetic Nanoparticles in Human Aortic Aneurysms

88%
Darmenko Y., Gorobets O., Gorobets S., Sharay I., Lazarenko O.
Acta Physica Polonica A
|
2018
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vol. 133
|
issue 3
738-741
EN
The presence of biogenic magnetic nanoparticles (BMNs) in aortic aneurysm is detected using magnetic force microscopy. The presence of BMNs (single BMN and their chains) in aortic aneurysm may cause magneto-dipole interactions of these BMNs with BMNs of microorganisms - pathogens of heart and with artificial magnetic nanoparticles in the drug delivery systems. The accumulation of BMNs in the human heart can be attributed not only to the process of biomineralization BMNs directly in the tissues of heart but due to the accumulation of microorganisms - pathogens of heart that are natural producers of BMNs.
3
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Influence of Biogenic Magnetic Nanoparticles on the Vesicular Transport

76%
Mikeshyna H., Darmenko Y., Gorobets O., Gorobets S., Sharay I., Lazarenko O.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 3
731-733
EN
In this paper, the interaction forces are calculated between chains of BMNs on the cell membrane and vesicles (granules) inside the cell to identify the role of BMNs in vesicular transport in cell. For the first time, the forces arising between the vesicle and BMNs inside the cell were calculated, with vesicles being considered as effectively paramagnetic, paramagnetic and vesicles containing magnetic nanoparticles. The comparison was carried out of the forces arising between the vesicle and BMNs with the forces of the antigen-antibody, with the force necessary for the functioning of the magnetic tweezers and with the forces that molecular motors develop. It was determined that the forces of magnetic-dipole interaction of BMN with vesicles can significantly affect vesicular transport in cells.
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