effects on rat embryo development
A recent study
has suggested that nonthermal radiofrequency radiation (RFR) may
interfere with gene expression during early gestation and result
in changes in the production of proteins used in development of
the skeleton. For more, see "Research
- Toxicological Experiments - Others - Growth and Maturation".
Pyrpasopoulou A, Kotoula V, Cheva A, Hytiroglou P, et al. Bone morphogenetic
protein expression in newborn rat kidneys after prenatal exposure
to radiofrequency radiation. Bioelectromagnetics 2004;216-227.
affects the eye changes in animals exposed to RFR
There has been
controversy about the effect of RFR on the eyes of exposed animals.
Some studies have shown changes while others have not. Some authors
have suggested that the different findings could be at least partly
related to whether or not anesthesia had been employed in the experiment.
Kojima and colleagues tested this hypothesis and found that, after
exposure to high doses of RFR, changes were much greater in the
eyes of rabbits that were anesthetized, compared to those not anesthetized.
They also found that the temperature within the eye was much higher
in anesthetized animals. For more, see "Research
- Toxiclogical Experiments - Eye".
Kojima M, Hata I, Wake K, Watanabe S-i, et al. Influence of anesthesia
and temperature in rabbit eyes exposed to microwaves. Bioelectromagnetics
review of Lin's research
Last year James
Lin received the d'Arsonval medal from the Bioelectromagnetics Society.
His acceptance speech on presentation of the award is reproduced
in a recent paper. It covers a wide range of Lin's microwave research
studies, including experiments on snail neurons, the blood brain
barrier, hyperthermia treatment for cancer, the microwave auditory
phenomenon, treatment for cardiac arrythmias, and monitoring of
vital signs in humans.
Lin JC. Studies on microwaves in medicine and biology: From snails
to humans. Bioelectromagnetics 2004;25:146-159
study reports increased heat shock proteins after EMF exposure
reported on research on heat shock proteins (hsp) - see "What's
New" for July 2000, November 2001, July 2002, and December
2002. Another paper reports increased levels of hsp70 in response
to EMFs of the GSM 1800 frequency. This was seen in certain types
of cells but not in others, and with one type of modulated signal
but not another. For more, see "Research
- Toxicological Experiments - Others - Heat stress response".
Czyz J, Guan K, Zeng Q, Nikolova T, et al. (2004): High frequency
electromagnetic fields (GSM signals) affect gene expression levels
in tumor suppressor p53-deficient embryonic stem cells. Bioelectromagnetics