Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New research suggests a potentially damaging effect of extremely low frequency electromagnetic fields

17.07.2002

The effect of extremely low frequency electromagnetic fields (ELF-EMF), such as those emitted around high-voltage transmission lines on human health, is controversial. Some studies suggest an association between exposure to ELF-EMF and incidence of leukaemia, although little direct evidence exists that exposure causes damage to biological molecules. A new study, published in the Cancer Cell International, presents experimental evidence to show that extremely low frequency electro-magnetic fields can have a potentially damaging effect on the process of cell division in (already) radiation-injured cells, which could lead to them becoming cancerous. Cell division and the growth cycle rely on two major events. The first involves the replication of the cell`s genetic material (DNA). The second involves cell separation into two daughter cells. These steps are separated by two pauses or "gaps", the first occurs after cells have divided, but before the next round of DNA synthesis (G1) and the second between DNA synthesis and division (G2). These "gaps" allow the cell to take stock of each stage of the process before progressing to the next. The checkpoint in G1 prevents cells from duplicating their DNA if conditions are unfavourable, whilst the checkpoint in G2 stops cells from dividing when damage has occurred to the chromosomes (DNA). These checkpoints effectively police the process of cell division so that risk of damaged cells replicating is minimised.

When the molecules involved in cell division are damaged by ionising radiation, for example, it can lead to uncontrolled growth and the development of cancer. The research in Cancer Cell International examines the effects of combined ELF-EMF and ionising radiation on human cells. The researchers could not find any change in the process of cell division in cells exposed to ELF-EMF alone, but exposure to ionising radiation predictably caused the process of division to slow down as the cells were held at each checkpoint in order to repair the damage. It was anticipated that the combined effect of ELF-EMF and ionising radiation would further slow down cell cycle. However, cell division was slightly faster in 12 out of 20 experiments, but never slower.

It is well known that ionising radiation can itself cause cancer, but it seems that ELF-EMF makes the cells push on into division where errors become compounded. The researchers suggest that ELF-EMF may interfere with the G2 checkpoint that normally stops damaged cells entering division before they have had the opportunity to repair the damage, increasing the chances of them becoming cancerous.

The study is clearly at a preliminary stage; however, the researchers hope that this will open up a new line of investigation and help to understand the risks associated with ELF-EMF, for example, suspected in communities living in close proximity to high voltage transmission lines.

Gordon Fletcher | AlphaGalileo
Further information:
http://www.biomedcentral.com/info/pr-releases.asp?pr=20020716
http://www.cancerci.com/content/2/1/3

More articles from Life Sciences:

nachricht New risk factors for anxiety disorders
24.02.2017 | Julius-Maximilians-Universität Würzburg

nachricht Stingless bees have their nests protected by soldiers
24.02.2017 | Johannes Gutenberg-Universität Mainz

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>