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- Gepubliceerd: zondag 02 december 2012 11:07
IOL SciTech - Tumours in the brain and nervous system are increasing, according to the cancer registries of many Western countries.
IOL SciTech - Tumours in the brain and nervous system are increasing, according to the cancer registries of many Western countries.
A highly reproducible non-thermal effect of mobile phones depends on interaction between protein and water. Dit e-mailadres wordt beveiligd tegen spambots. JavaScript dient ingeschakeld te zijn om het te bekijken. says it brings us closing to understanding the biophysics involved in how weak electromagnetic radiation can have biological effects.
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The most striking effect of exposure to the radio-frequency (RF) radiation from mobile phones is damage to the brain and brain cells of rats (see "Mobile phones & brain damage" SiS24), which were found at levels of exposure far below the current safety limits. After just two hours of such exposure, blood albumin leaked into the brain causing brain cells to die; and the effects lasted for at least 50 days after a single exposure. But no clear mechanism has emerged to explain this or other ‘non-thermal’ effects of electromagnetic fields (EMFs) even after a concerted, Europe-wide research programme (see "Confirmed: mobile phones break DNA and scramble genomes", this series).
Bron: Biomedical and Environmental Sciences. 2012 Apr. 25 (2):182-8.
Relationship between cognition function and hippocampus structure after long-term microwave exposure.
RESULTS: Following long-term microwave exposure there was a significant decrease in learning and memory activity in the 7 d, 14 d, and 1 m in all three microwave exposure groups. Neurotransmitter concentrations of four amino acids (glutamate, aspartic acid, glycine, and gamma-aminobutyric acid) in hippocampus were increased in the 2.5 and 5 mW/cm2 groups and decreased in the 10 mW/cm2 group. There was evidence of neuronal degeneration and enlarged perivascular spaces in the hippocampus in the microwave exposure groups. Further, mitochondria became swollen and cristae were disordered. The rough endoplasmic reticulum exhibited sacculated distension and there was a decrease in the quantity of synaptic vesicles.
CONCLUSION: These data suggest that the hippocampus can be injured by long-term microwave exposure, which might result in impairment of cognitive function due to neurotransmitter disruption.
Beluister het interview hier. npr.org - One night in 1984, British scientist Frances Ashcroft was studying electricity in the body and discovered the protein that causes neonatal diabetes. She says she felt so "over the moon" that she couldn't sleep.
By the next morning, she says, she thought it was a mistake.
But luckily, that feeling was wrong, and Ashcroft's revelation led to a medical breakthrough decades later, which now enables people born with diabetes to take pills instead of injecting insulin.
"I don't think people realize the excitement of being a true discoverer," Ashcroft tells Fresh Air's Terry Gross. "There are no new places to discover on this Earth, but there are many, many new ideas to discover — new things to find out about the way the world works."
Ashcroft says she grew up wanting to be a farmer's wife but later became fascinated with studying electrical impulses in the body. Her new book The Spark of Life details how electricity drives everything we think, feel or do through ion channels that are found in the membranes of each of our cells.
"Your ability to hear me now is because there are cells in your ears that are converting sound waves into an electrical signal, which is what the brain can interpret as sound," Ashcroft says.
Ashcroft is a professor at Oxford University and the winner of the L'oreal-UNESCO Award for Women in Science. She is now working on trying to see a particular protein at atomic resolution and on understanding why people become overweight.
McGill University Professor Proposes Radical New Outlook