Wetenschappelijk nieuws

Radiation Proteomics: A Brief Overview


Acute biological effects caused by the exposure to high doses of radiation, either ionizing or non-ionizing, are relatively well known but the delayed effects, occurring decades after exposure, are difficult to predict. The knowledge of the acute and delayed effects of the low doses of ionizing radiation (e.g. bystander effect) or non-ionizing radiation (e.g. radiation emitted by wireless communication devices) is not yet reliably established. Often the acute effects of low doses are small and difficult to discover and replicate in scientific studies. Chronic effects of prolonged exposures to low-dose radiation for decades are virtually unknown and often not possible to predict on the basis of the knowledge gained from acute exposures to high doses of radiation. Physiological significance of the biological effects induced by low doses of radiation is not known. The same lack of predictability of outcomes applies to the delayed effects of high-dose radiation exposures. Proteomics, supplemented with other "omics" techniques, might be the best way forward to find out the target molecules of radiation, the biomarkers of radiation exposure and the physiological and health significance of the acute and delayed biological effects caused by the exposures to high and low-dose radiation. However, the currently available database of radiation effects on proteomes is far too small to be useful in formulation of new hypotheses concerning health consequences of radiation exposures.



» lees verder

Mobile phones affect multiple sperm quality traits: a meta-analysis


smartphone_en_zaadcelAs mobile phone usage is growing rapidly, there is a need for a comprehensive analysis of the literature to inform scientific debates about the adverse effects of mobile phone radiation on sperm quality traits. Therefore, we conducted a meta-analysis of the eligible published research studies on human males of reproductive age. Eleven studies were eligible for this analysis. Based on the meta-analysis, mobile phone use was significantly associated with deterioration in semen quality. The traits particularly affected adversely were sperm concentration, sperm morphology, sperm motility, proportion of non-progressive motile sperm (%), proportion of slow progressive motile sperm (%), and sperm viability. (...) The analysis shows that mobile phone use is possibly associated with a number of deleterious effects on the spermatozoa.


» lees verder

Nieuwe studie: hypothese over de meetbaarheid van elektrogevoeligheid



PubMed - "Electromagnetic hypersensitivity (EHS) is an ill-defined term to describe the fact that people who experience health symptoms in the vicinity of electromagnetic fields (EMFs) regard them as causal for their complaints. Up to now most scientists assume a psychological cause for the suffering of electromagnetic hypersensitive individuals. This paper addresses reasons why most provocation studies could not find any association between EMF exposure and EHS and presents a hypothesis on diagnosis and differentiation of this condition. Simultaneous recordings of heart rate variability, microcirculation and electric skin potentials are used for classification of EHS. Thus, it could be possible to distinguish "genuine" electromagnetic hypersensitive individuals from those who suffer from other conditions."


Dr. Lebrecht Von Klitzing

» lees verder

Radiation from wireless technology affects the blood, the heart, and the autonomic nervous system




Exposure to electrosmog generated by electric, electronic, and wireless technology is accelerating to the point that a portion of the population is experiencing adverse reactions when they are exposed. The symptoms of electrohypersensitivity (EHS), best described as rapid aging syndrome, experienced by adults and children resemble symptoms experienced by radar operators in the 1940s to the 1960s and are well described in the literature. An increasingly common response includes clumping (rouleau formation) of the red blood cells, heart palpitations, pain or pressure in the chest accompanied by anxiety, and an upregulation of the sympathetic nervous system coincident with a downregulation of the parasympathetic nervous system typical of the "fight-or-flight" response. Provocation studies presented in this article demonstrate that the response to electrosmog is physiologic and not psychosomatic. Those who experience prolonged and severe EHS may develop psychologic problems as a consequence of their inability to work, their limited ability to travel in our highly technologic environment, and the social stigma that their symptoms are imagined rather than real.



» lees verder

West Australian school bans phones at breaks


the West Australian/EMFachts Consultancy - Prestigious girls' school Penrhos College has banned students from using mobile phones during their lunch and recess breaks because of concerns students are losing the art of conversation.


Principal Meg Melville said, even though girls were sitting in groups during breaks, teachers had become aware students were texting their friends instead of talking to each other. "We decided we wanted to really encourage them during their break times at school to have conversations with one another, face-to-face," she said.


Mrs Melville said technology was embedded in the curriculum and mobile phones had become an important part of that. But it was just as important for students to develop conversation skills such as understanding the nuances conveyed by people's reactions and body language.


» lees verder

Drosophila oogenesis as a bio-marker responding to EMF sources


Link naar het artikel van Alasdair Philips (Powerwacth UK) met afbeeldingen.


Lukas Margaritis and colleagues have produced a superb new research paper showing significant negative effects of a range of everyday RF devices on fruit-fly fertility.


In my opinion, this large (25 page) paper is one of the best examples of a good scientific paper into EMF/RF effects on life processes that I have ever seen. It is well set-out and, most unusually for biological investigative papers, it gives excellent, high-quality, detailed measurements of the signal strengths, frequencies and waveforms of the RF signals to which the fruit flies were exposed.

They used a GSM (2G) handset, a DECT cordless phone base-unit and also a DECT handset, WiFi, a low-power Bluetooth adapter, 2.4 GHz WiFi and a number of other devices.


They write "All EMF sources used created statistically significant effects regarding fecundity and cell death-apoptosis induction, even at very low intensity levels (0.3 V/m bluetooth radiation), well below ICNIRP's guidelines, suggesting that Drosophila oogenesis system is suitable to be used as a biomarker for exploring potential EMF bioactivity."


» lees verder

Studie: draadloze DECT telefoons nog groter gezondheidsrisico voor jonge mensen dan gsm's


stuff.co.nz - Cordless phones are more of a health risk to young people than mobiles, according to new university research.


In a study of almost 400 Wellington intermediate pupils, adjunct Victoria University researcher Mary Redmayne found pre-teens were more likely to suffer headaches if they made long or frequent calls on cordless phones or cellphones.


The research, to be published in the Environmental Health journal this week, also found high users of cordless phones more commonly experienced tinnitus, or ringing in their ears.


In a separate study, the PhD candidate discovered year 7 and 8 students talked on cordless phones for far longer than on their mobiles, meaning it was the home line exposing them to the highest doses of potentially harmful radiation.


» lees verder

Overproduction of free radical species in embryonal cells exposed to low intensity radiofrequency radiation


Results: The exposure resulted in a significant persistent overproduction of superoxide and nitrogen oxide in embryo cells during all period of analyses. As a result, significantly increased levels of TBARS and 8-oxo-dG followed by significantly decreased levels of superoxide dismutase and catalase activities were developed in the exposed embryo cells.


Conclusion: Exposure of developing quail embryos to extremely low intensity RF-EMR of GSM 900 MHz during at least one hundred and fifty-eight hours leads to a significant overproduction of free radicals/reactive oxygen species and oxidative damage of DNA in embryo cells. These oxidative changes may lead to pathologies up to oncogenic transformation of cells.





» lees verder

Two important new papers show mobile phone use does cause an increase in brain tumours


Powerwatch.org.uk - RF-EMF emissions from wireless phones are class 1 human carcinogens


Using the long-established and respected Bradford Hill criteria for assessing causality, this paper shows that RF-EMF exposure from mobile (and cordless) phones should be regarded as an IARC class 1 human carcinogen (cancer causing agent). Current guidelines for exposure need to be urgently revised.


» lees verder