Hematological parameters' changes in mice subchronically exposed to static magnetic fields of different orientations

Area of Science:

• Biophysics
• Hematology
• Environmental Health

Background:

• Static magnetic fields (SMFs) are time-independent magnetic fields with spatially varying intensity.
• Understanding the biological effects of SMFs is crucial for assessing potential health impacts.

Purpose of the Study:

• To investigate the influence of subchronic continuous exposure to upward and downward directed SMF on hematological parameters and spleen cellularity in mice.
• To differentiate between stress-induced responses and specific adaptations to SMF exposure.

Main Methods:

• Male Swiss-Webster mice were continuously exposed to 16 mT SMF (10 mT/cm gradient) in upward or downward orientations for 28 days.
• Hematological parameters, spleen cellularity, and iron content in various organs were analyzed.
• Comparison between exposed groups and a control group was performed.

Main Results:

• Exposure to upward and downward SMF significantly increased serum transferrin levels compared to controls.
• Spleen cellularity was significantly higher in the downward SMF group than in the upward and control groups.
• Spleen lymphocytes increased, while granulocytes decreased in both exposed groups. Iron content decreased in the brain and liver, with a concomitant increase in serum and spleen.

Conclusions:

• Subchronic 16 mT SMF exposure induced significant hematological changes, including lymphocyte and granulocyte redistribution, indicative of adaptation.
• The observed changes suggest a specific adaptive response to SMF exposure rather than a generalized stress response.