Document Detail

Cell membrane lipid molecular dynamics in a solenoid versus a magnetically shielded room.
MedLine Citation:
PMID:  9492167     Owner:  NLM     Status:  MEDLINE    
The generalized polarization function of the fluorescent probe 2-dimethylamino-6-lauroylnaphthalene has been used to evaluate the lipid dynamics in Friend erythroleukemia cell membrane. The values of this function varied during the culture growth cycle, showing decreased lipid dynamics 24-48 h from the cell seeding. When the cycle occurred in a solenoid producing a magnetic field of 70 microT at 50 Hz in addition to the 45 microT DC of the earth (short-term 4-day exposure), the membrane lipid dynamics during this same time-period decreased by about 10% (P < .04). After long-term (184 days) or extremely long-term (395 days) exposure of the cells to the magnetic field, little additional variation in the membrane lipid dynamics was observed, suggesting an adaptation phenomenon. A variation of membrane lipid dynamics was also observed due to in vitro cell differentiation (P < .02). Nevertheless, the exposure of both undifferentiating and differentiating cells to a highly attenuated magnetic field in a magnetically shielded room (20 nT DC plus 2.5 pT AC) did not induce any modification of membrane lipid dynamics.
P Volpe; T Parasassi; C Esposito; G Ravagnan; A M Giusti; A Pasquarelli; T Eremenko
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Bioelectromagnetics     Volume:  19     ISSN:  0197-8462     ISO Abbreviation:  Bioelectromagnetics     Publication Date:  1998  
Date Detail:
Created Date:  1998-03-31     Completed Date:  1998-03-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8008281     Medline TA:  Bioelectromagnetics     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  107-11     Citation Subset:  IM    
Department of Biology of the University of Rome Tor Vergata, Italy.
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MeSH Terms
Cell Cycle / radiation effects
Cell Differentiation / radiation effects
Cell Division / radiation effects
Cell Membrane / metabolism,  radiation effects
Electric Conductivity
Electromagnetic Fields* / adverse effects
Environment, Controlled*
Leukemia, Erythroblastic, Acute / metabolism,  pathology
Membrane Lipids / metabolism*,  radiation effects
Time Factors
Tumor Cells, Cultured
Reg. No./Substance:
0/Membrane Lipids

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