Radiofrequency EMF irradiation effects on pre-B lymphocytes undergoing somatic recombination

Abstract

Intense electromagnetic fields (EMFs) induce DNA double stranded breaks (DSBs) in exposed lymphocytes.We study developing pre-B lymphocytes following V(D)J recombination at their Immunoglobulin light chain loci (IgL). Recombination physiologically induces DNA DSBs, and we tested if low doses of EMF irradiation affect this developmental stage. Recombining pre-B cells, were exposed for 48 h to low intensity EMFs (maximal radiative power density flux S of 9.5 µW/cm2 and electric field intensity 3 V/m) from waves of frequencies ranging from 720 to 1224 MHz. Irradiated pre-B cells show decreased levels of recombination, reduction which is dependent upon the power dose and most remarkably upon the frequency of the applied EMF. Although 50% recombination reduction cannot be obtained even for an S of 9.5 µW/cm2 in cells irradiated at 720 MHz, such an effect is reached in cells exposed to only 0.45 µW/cm2 power with 950 and 1000 MHz waves. A maximal four-fold recombination reduction was measured in cells exposed to 1000 MHz waves with S from 0.2 to 4.5 µW/cm2 displaying normal levels of γH2AX phosphorylated histone. Our findings show that developing B cells exposure to low intensity EMFs can affect the levels of production and diversity of their antibodies repertoire.

Inhibitory Effect of Cell Phones Against Human Breast Cancer and Myeloid Leukemia Cells Proliferation in Culture Media

“…To give another example, cell death might be the disappearance of overstimulated immune cells to avoid damaging familiar cells. [2][3][4] As a result of the stimulus such as hormones, some chemical substances and radiations coming from environment when the natural course continues, DNA damage can occur in cells. If the cell cannot repair DNA damage, the cells carrying abnormal characters disappear in a programmed way (apoptosis).…”