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The effect of strong static magnetic field on lymphocytes
Author(s) -
Aldinucci Carlo,
Garcia Julian Blanco,
Palmi Mitri,
Sgaragli Gianpietro,
Benocci Alberto,
Meini Antonella,
Pessina Federica,
Rossi Claudio,
Bonechi Claudia,
Pessina Gian Paolo
Publication year - 2003
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.10071
Subject(s) - jurkat cells , phytohaemagglutinin , proinflammatory cytokine , peripheral blood mononuclear cell , tumor necrosis factor alpha , microbiology and biotechnology , cell growth , chemistry , interleukin , cytokine , immunology , t cell , biology , lymphocyte , inflammation , biochemistry , immune system , in vitro
We investigated whether static electromagnetic fields (EMFs) at a flux density of 4.75 T, generated by an NMR apparatus (NMRF), could promote movements of Ca 2+ , cell proliferation, and the eventual production of proinflammatory cytokines in human peripheral blood mononuclear cells (PBMC) as well as in Jurkat cells, after exposure to the field for 1 h. The same study was also performed after activation of cells with 5 mg/ml phytohaemagglutinin (PHA). Our results clearly demonstrate that static NMRF exposure has neither proliferative, nor activating, nor proinflammatory effects on both normal and PHA activated PBMC. Moreover, the concentration of interleukin‐1β, interleukin‐2, interleukin‐6, interferon, and tumour necrosis factor α (TNFα) remained unvaried in exposed cells. Exposure of Jurkat cells statistically decreased the proliferation and the proliferation indexes, which 24 and 48 h after exposure were 0.7 ± 0.29 and 0.87 ± 0.12, respectively. Moreover, in Jurkat cells the [Ca 2+ ] i was higher than in PBMC and was reduced significantly to about one half after exposure. This is consistent with the decrease of proliferation and with the low levels of IL‐2 measured. On the whole, our data suggest that NMRF exposure failed to affect the physiologic behaviour of normal lymphomonocytes. Instead in Jurkat cells, by changing the properties of cell membranes, NMRF can influence Ca 2+ transport processes, and hence Ca 2+ homeostasis with improvement of proliferation. Bioelectromagnetics 24:109–117, 2003. © 2003 Wiley‐Liss, Inc.